ORCID Profile
0000-0002-4606-3678
Current Organisation
University of South Australia
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Research Topics
In Research Link Australia (RLA), "Research Topics" refer to ANZSRC FOR and SEO codes. These topics are either sourced from ANZSRC FOR and SEO codes listed in researchers' related grants or generated by a large language model (LLM) based on their publications.
Top 5 Research Topics
ANZSRC Field of Research (FoR)
Environmental Nanotechnology | Functional Materials | Energy Generation, Conversion and Storage Engineering | Environmental Science and Management | Macromolecular and Materials Chemistry | Environmental Impact Assessment | Environmental Management | Materials Engineering | Chemical Characterisation of Materials | Environmental Monitoring |
ANZSRC Socio-Economic Objective (SEO)
Expanding Knowledge in the Environmental Sciences | Expanding Knowledge in the Chemical Sciences | Rehabilitation of Degraded Urban and Industrial Environments | Solar-Thermal Energy | Environmental Policy, Legislation and Standards not elsewhere classified | Expanding Knowledge in the Physical Sciences
Related Links
Publications
Modified green synthesis of Fe3 O4 @SiO2 nanoparticles for pH responsive drug release
Publisher: Elsevier BV
Date: 07-2020
Burkholderia cepacia immobilized on eucalyptus leaves used to simultaneously remove malachite green (MG) and Cr(VI)
Publisher: Elsevier BV
Date: 12-2018
DOI: 10.1016/J.COLSURFB.2018.09.008
Abstract: A multifunctional biomaterial capable of simultaneously removing malachite green (MG) and Cr(VI) was prepared by immobilizing Burkholderia cepacia (B. cepacia) on eucalyptus leaves (EL). The maximum uptake of MG (60 mg/L) and Cr(VI) (20 mg/L) were 94.8% and 71.9% respectively, which was more efficient than when using EL or free cells alone. SEM-EDS demonstrated that B. cepacia was attached to EL and that Cr(VI) was biosorbed into the immobilized cells. FTIR showed that the degradation by functional groups of immobilized cells was in keeping with the products, detected by GC-MS, which suggested that MG could be degraded to 4-dimethylamino benzophenone and 4-dimethylamino phenol. The removal of both MG and Cr(VI) by EL immobilized cells fit the pseudo-second order adsorption kinetic model well (with both R
Chapter 4 Bioavailability: The underlying basis for risk-based land management
Publisher: Elsevier
Date: 2008
Toward green nano adsorbents and catalysts: Highly active Fe/Mn nanoparticles for enhanced oxidation of oxytetracycline and levofloxacin
Publisher: Elsevier BV
Date: 02-2023
DOI: 10.1016/J.JCIS.2022.11.074
Abstract: The widespread use of antibiotics, such as oxytetracycline (OTC) and levofloxacin (LEV), has led to dangerous levels of environmental contamination. In this study, functionalized iron/manganese nanoparticles (Fe/Mn NPs), which act as both adsorbent and Fenton catalyst, were green-synthesized using a reducing agent derived from a tea extract. The resulting pre-sorption/Fenton-like oxidation system effectively removed both OTC and LEV from the aqueous solution with adsorption capacities of Fe/Mn NPs for OTC and LEV of 58.8 and 192.3 mg·g
Circulating Cell-Free DNA to Guide Prostate Cancer Treatment with PARP Inhibition
Publisher: American Association for Cancer Research (AACR)
Date: 31-08-2017
DOI: 10.1158/2159-8290.CD-17-0261
Abstract: Biomarkers for more precise patient care are needed in metastatic prostate cancer. We have reported a phase II trial (TOPARP-A) of the PARP inhibitor olaparib in metastatic prostate cancer, demonstrating antitumor activity associating with homologous recombination DNA repair defects. We now report targeted and whole-exome sequencing of serial circulating cell-free DNA (cfDNA) s les collected during this trial. Decreases in cfDNA concentration independently associated with outcome in multivariable analyses (HR for overall survival at week 8: 0.19 95% CI, 0.06–0.56 P = 0.003). All tumor tissue somatic DNA repair mutations were detectable in cfDNA allele frequency of somatic mutations decreased selectively in responding patients (χ2 P & 0.001). At disease progression, following response to olaparib, multiple subclonal aberrations reverting germline and somatic DNA repair mutations (BRCA2, PALB2) back in frame emerged as mechanisms of resistance. These data support the role of liquid biopsies as a predictive, prognostic, response, and resistance biomarker in metastatic prostate cancer. Significance: We report prospectively planned, serial, cfDNA analyses from patients with metastatic prostate cancer treated on an investigator-initiated phase II trial of olaparib. These analyses provide predictive, prognostic, response, and resistance data with “second hit” mutations first detectable at disease progression, suggesting clonal evolution from treatment-selective pressure and platinum resistance. Cancer Discov 7(9) 1006–17. ©2017 AACR. See related commentary by Domchek, p. 937. See related article by Kondrashova et al., p. 984. See related article by Quigley et al., p. 999. This article is highlighted in the In This Issue feature, p. 920
Metal uptake via phosphate fertilizer and city sewage in cereal and legume crops in Pakistan
Publisher: Springer Science and Business Media LLC
Date: 13-01-2015
DOI: 10.1007/S11356-015-4073-Y
Abstract: Crop irrigation with heavy metal-contaminated effluents is increasingly common worldwide and necessitates management strategies for safe crop production on contaminated soils. This field study examined the phytoavailability of three metals (Cd, Cu, and Zn) in two cereal (wheat, maize) and legume (chickpea, mungbean) crops in response to the application of either phosphatic fertilizer or sewage-derived water irrigation over two successive years. Five fertilizer treatments, i.e. control, recommended nitrogen (N) applied alone and in combination of three levels of phosphorus (P), half, full and 1.5 times of recommended P designated as N0P0, N1P0, N1P0.5, N1P1.0, and N1P1.5, respectively. Tissue concentrations of Cd, Cu, Zn, and P were determined in various plant parts, i.e., root, straw, and grains. On the calcareous soils studied while maximum biomass production was obtained with application of P at half the recommended dose, the concentrations of metals in the crops generally decreased with increasing P levels. Tissue metal concentrations increased with the application of N alone. Translocation and accumulation of Zn and Cu were consistently higher than Cd. And the pattern of Cd accumulation differed among plant species more Cd being accumulated by dicots than monocots, especially in their grains. The order of Cd accumulation in grains was maize > chickpea > mungbean > wheat. Mungbean and chickpea straws also had higher tissue Cd concentration above permissible limits. The two legume species behaved similarly, while cereal species differed from each other in their Cd accumulation. Metal ion concentrations were markedly higher in roots followed by straw and grains. Increasing soil-applied P also increased the extractable metal and P concentrations in the post-harvest soil. Despite a considerable addition of metals by P fertilizer, all levels of applied P effectively decreased metal phytoavailability in sewage-irrigated soils, and applying half of the recommended dose of P fertilizer was the most feasible solution for curtailing plant metal uptake from soils. These findings may have wide applications for safer crop production of monocot species when irrigating crops with sewage effluent-derived waters.
Rhesus negative males have an enhanced IFNγ-mediated immune response to influenza A virus
Publisher: Springer Science and Business Media LLC
Date: 15-04-2022
DOI: 10.1038/S41435-022-00169-5
Abstract: The Rhesus D antigen (RhD) has been associated with susceptibility to several viral infections. Reports suggest that RhD-negative in iduals are better protected against infectious diseases and have overall better health. However, potential mechanisms contributing to these associations have not yet been defined. Here, we used transcriptomic and genomic data from the Milieu Interieur cohort of 1000 healthy in iduals to explore the effect of Rhesus status on the immune response. We used the rs590787 SNP in the RHD gene to classify the 1000 donors as either RhD-positive or -negative. Whole blood was stimulated with LPS, polyIC, and the live influenza A virus and the NanoString human immunology panel of 560 genes used to assess donor immune response and to investigate sex-specific effects. Using regression analysis, we observed no significant differences in responses to polyIC or LPS between RhD-positive and -negative in iduals. However, upon sex-specific analysis, we observed over 40 differentially expressed genes (DEGs) between RhD-positive ( n = 384) and RhD-negative males ( n = 75) after influenza virus stimulation. Interestingly these Rhesus-associated differences were not seen in females. Further investigation, using gene set enrichment analysis, revealed enhanced IFNγ signalling in RhD-negative males. This lified IFNγ signalling axis may explain the increased viral resistance previously described in RhD-negative in iduals.
Genotypic Variation in Phytoremediation Potential of Indian Mustard Exposed to Nickel Stress: A Hydroponic Study
Publisher: Informa UK Limited
Date: 21-02-2015
DOI: 10.1080/15226514.2013.862206
Abstract: Ten Indian mustard (Brassica juncea L.) genotypes were screened for their nickel (Ni) phytoremediation potential under controlled environmental conditions. All ten genotypes were grown hydroponically in aqueous solution containing Ni concentrations (as nickel chloride) ranging from 0 to 50 μM and changes in plant growth, biomass and total Ni uptake were evaluated. Of the ten genotypes (viz. Agrini, BTO, Kranti, Pusa Basant, Pusa Jai Kisan, Pusa Bahar, Pusa Bold, Vardhan, Varuna, and Vaibhav), Pusa Jai Kisan was the most Ni tolerant genotype accumulating up to 1.7 μg Ni g(-1) dry weight (DW) in its aerial parts. Thus Pusa Jai Kisan had the greatest potential to become a viable candidate in the development of practical phytoremediation technologies for Ni contaminated sites.
A short-term study to evaluate the uptake and accumulation of arsenic in Asian willow (Salix sp.) from arsenic-contaminated water
Publisher: Springer Science and Business Media LLC
Date: 12-11-2014
DOI: 10.1007/S11356-013-2288-3
Abstract: Five Asian willow species (Salix jiangsuensis J172, Salix matsudana, Salix integra Yizhibi, Salix integra Weishanhu, and Salix mongolica) were evaluated for their potential for phytofiltration of arsenic (As) from synthetically contaminated waters. Arsenic accumulation, tolerance, uptake influx, and phytofiltration ability of the five willow species were examined under hydroponic conditions in a glasshouse. Short-term exposure (2 weeks) to solutions containing 80 μmol L(-1) arsenate (As(V)), resulted in significant accumulation of As in all willow species. Arsenic concentration in plant roots ranged from 322 mg kg(-1) dry weight (DW) for S. matsudana to 604 mg kg(-1) (DW) for S. integra Yizhibi. S. integra Yizhibi decreased As(V) concentration in water from 3.87 to 1.89 μmol L(-1) (290 to 142 μg L(-1)) over 168 h, which is 50 % of the total As(V) in the solution. The results suggested that even though Asian willow was not a traditional aquatic species, it still had significant potential for phytofiltration of As from contaminated waters. Of the five willow species studied, S. integra Yizhibi had the greatest capacity to remove As from As-contaminated waters. Thus, Asian willow has significant potential for the phytofiltration of As and may also be suitable for practical phytoremediation of As in highly water-logged areas.
Potential for enhanced phytoremediation of landfills using biosolids - a review
Publisher: Elsevier BV
Date: 03-2010
DOI: 10.1016/J.JENVMAN.2009.10.017
Abstract: Despite the use of recyclable materials increasing worldwide, waste disposal to landfill remains the most common method of waste management because it is simple and relatively inexpensive. Although landfill disposal is an effective waste management system, if not managed correctly, a number of potential detrimental environmental impacts have been identified including soil and ground water contamination, leachate generation, and gas emissions. In particular, improper post-closure treatment of landfills or deterioration of the conventional clay landfill capping were shown to result in land degradation which required remediation to secure contaminants within the landfill site. Phytoremediation is an attractive technology for landfill remediation, as it can stabilize soil and simultaneously remediate landfill leachate. In addition, landfill phytoremediation systems can potentially be combined with landfill covers (Phytocapping) for hydrological control of infiltrated rainfall. However, for the successful application of any phytoremediation system, the effective establishment of appropriate, desired vegetation is critical. This is because the typically harsh and sterile nature of landfill capping soil limits the sustainable establishment of vegetation. Therefore, the physicochemical properties of landfill capping soils often need to be improved by incorporating soil amendments. Biosolids are a common soil amendment and will often meet these demanding conditions because they contain a variety of plant nutrients such as nitrogen, phosphate, potassium, as well as a large proportion of organic matter. Such amendment will also ameliorate the physical properties of the capping soils by increasing porosity, moisture content, and soil aggregation. Contaminants which potentially originate from biosolids will also be remediated by activities congruent with the establishment of plants and bacteria.
Enhanced reactivity of bimetallic Fe/Cu-organic composite (Fe/Cu-OC) using biosynthesis with tea extract for As(V) removal
Publisher: Elsevier BV
Date: 02-2023
Metal distributions in seawater, sediment and marine benthic macroalgae from the South Australian coastline
Publisher: Springer Science and Business Media LLC
Date: 17-05-2014
Enhanced activity of Fe/Mn nanoparticles using a response surface methodology and mechanism for removing oxytetracycline and copper ion
Publisher: Elsevier BV
Date: 04-2023
Simultaneous removal of triclosan and Cd(Ⅱ) by bio-reduced graphene oxide and its mechanism
Publisher: Elsevier BV
Date: 2023
DOI: 10.1016/J.CHEMOSPHERE.2022.137021
Abstract: The co-existence of contaminants such as triclosan (TCS) and Cadmium in wastewater is a major public health problem because of their persistence and toxicity. In this study, bio-reduced graphene oxide (B-rGO) synthesized by Lysinibacillus sp. Simultaneously remove TCS and Cd(II), with adsorption capacities of 81.91 and 23.32 mg g
CAPABILITIES OF REMOTE SENSING HYPERSPECTRAL IMAGES FOR THE DETECTION OF LEAD CONTAMINATION: A REVIEW
Publisher: Copernicus GmbH
Date: 16-07-2012
DOI: 10.5194/ISPRSANNALS-I-7-55-2012
Abstract: Abstract. Advances in remote sensing technologies are increasingly becoming more useful for resource, ecosystem and agricultural management applications to the extent that these techniques can now also be applied for monitoring of soil contamination and human health risk assessment. While, extensive previous studies have shown that Visible and Near Infrared Spectroscopy (VNIRS) in the spectral range 400–2500 nm can be used to quantify various soil constituents simultaneously, the direct determination of metal concentrations by remote sensing and reflectance spectroscopy is not as well examined as other soil parameters. The application of VNIRS, including laboratory hyperpectral measurements, field spectrometer measurements or image spectroscopy, generally achieves a good prediction of metal concentrations when compared to traditional wet chemical methods and has the advantage of being relatively less expensive and faster, allowing chemical assessment of contamination in close to real time. Furthermore, imaging spectroscopy can potentially provide significantly more s les over a larger spatial extent than traditional ground s ling methods. Thus the development of remote sensing techniques (field based and either airborne or satellite hyperspectral imaging) can support the monitoring and efficient mapping of metal contamination (in dust and soil) for environmental and health impact assessment. This review is concerned with the application of remote sensing and reflectance spectroscopy to the detection of heavy metals and discusses how current methods could be applied for the quantification of Pb contaminated soil surrounding mines and smelters.
Implementation of food frequency questionnaire for the assessment of total dietary arsenic intake in Bangladesh: Part B, preliminary findings
Publisher: Springer Science and Business Media LLC
Date: 04-01-2009
DOI: 10.1007/S10653-008-9232-3
Abstract: Dietary intake of water and food has been identified as one of the major pathways for arsenic (As) exposure in the rural population of Bangladesh. Therefore, realistic assessment and measurement of dietary intake patterns are important for the development of an accurate estimate of As exposure and human health risk assessment. One important consideration is to identify an appropriate tool for measuring dietary intake. In this study an interviewer-administered Food Frequency Questionnaire (FFQ) was implemented to determine age and gender specific dietary intake. The developed FFQ was unique because it developed a synergy between field dietary assessment and As concentration measurements in various environmental media. The resulting integrated database provided an accurate framework for the process of As exposure and human health risk assessment. The preliminary results reported here from the FFQ demonstrated that this technique could be used in rural areas as a tool to assess As exposure and the associated human health risk.
An interfacial solar evaporation enabled autonomous double-layered vertical floating solar sea farm
Publisher: Elsevier BV
Date: 10-2023
Removal of Cr(VI) from aqueous solutions via reduction and absorption by green synthesized iron nanoparticles
Publisher: Elsevier BV
Date: 03-2018
IgG Subclass-Dependent Pulmonary Antigen Retention during Acute IgG-Dependent Systemic Anaphylaxis in Mice.
Publisher: The American Association of Immunologists
Date: 10-2022
Abstract: Mouse models of active systemic anaphylaxis rely predominantly on IgG Abs forming IgG–allergen immune complexes that induce IgG receptor–expressing neutrophils and monocytes/macrophages to release potent mediators, leading to systemic effects. Whether anaphylaxis initiates locally or systemically remains unknown. In this study, we aimed at identifying the anatomical location of IgG–allergen immune complexes during anaphylaxis. Active systemic anaphylaxis was induced following immunization with BSA and i.v. challenge with fluorescently labeled BSA. Ag retention across different organs was examined using whole-body fluorescence imaging, comparing immunized and naive animals. Various mouse models and in vivo deletion strategies were employed to determine the contribution of IgG receptors, complement component C1q, myeloid cell types, and anaphylaxis mediators. We found that following challenge, Ag diffused systemically, but specifically accumulated in the lungs of mice sensitized to that Ag, where it formed large Ab-dependent aggregates in the vasculature. Ag retention in the lungs did not rely on IgG receptors, C1q, neutrophils, or macrophages. IgG2a-mediated, but neither IgG1- nor IgG2b-mediated, passive systemic anaphylaxis led to Ag retention in the lung. Neutrophils and monocytes significantly accumulated in the lungs after challenge and captured high amounts of Ag, which led to downmodulation of surface IgG receptors and triggered their activation. Thus, within minutes of systemic injection in sensitized mice, Ag formed aggregates in the lung and liver vasculature, but accumulated specifically and dose-dependently in the lung. Neutrophils and monocytes recruited to the lung captured Ag and became activated. However, Ag aggregation in the lung vasculature was not necessary for anaphylaxis induction.
Telomere Length Shows No Association with BRCA1 and BRCA2 Mutation Status
Publisher: Public Library of Science (PLoS)
Date: 29-01-2014
A review of the phytochemical mediated synthesis of AgNP (silver nanoparticle): the wonder particle of the past decade
Publisher: Springer Science and Business Media LLC
Date: 30-10-2021
Sorption and bioavailability of arsenic in selected Bangladesh soils
Publisher: Springer Science and Business Media LLC
Date: 31-12-2009
DOI: 10.1007/S10653-008-9229-Y
Abstract: The bioavailability of arsenic (As) in the soil environment is largely governed by its adsorption-desorption reactions with soil constituents. We have investigated the sorption-desorption behaviour of As in four typical Bangladeshi soils subjected to irrigation with As-contaminated groundwater. The total As content of soils (160 s les) from the Laksham district ranged from 10 mg As kg(-1) soil, indicating the potential availability of As. In soils containing <5 mg As kg(-1), As was not detected in the pore water. A comparison of Bangladeshi soils with strongly weathered long-term As-contaminated soils from Queensland, Australia showed a much greater release of As in water extracts from the Australian soils. However, this was attributed to the much higher loading of As in these Australian soils. The correlation of pore water As with other inorganic ions (P, S) showed a strongly significant (P < 0.001) relationship with P, although there was no significant relationship between As and other inorganic cations, such as Fe and Mn. Batch sorption studies showed an appreciable capacity for both As(V) and As(III) sorption, with As(V) being retained in much greater concentrations than As(III).
Boosting extraction of Pb in contaminated soil via interfacial solar evaporation of multifunctional sponge
Publisher: Elsevier BV
Date: 10-2022
How do phytogenic iron oxide nanoparticles drive redox reactions to reduce cadmium availability in a flooded paddy soil?
Publisher: Elsevier BV
Date: 02-2021
Effect of biochar on heavy metal immobilization and uptake by lettuce (Lactuca sativa L.) in agricultural soil
Publisher: Springer Science and Business Media LLC
Date: 07-02-2015
Green synthesis of iron nanoparticles using red peanut skin extract: Synthesis mechanism, characterization and effect of conditions on chromium removal
Publisher: Elsevier BV
Date: 2020
DOI: 10.1016/J.JCIS.2019.09.106
Abstract: Green synthesis of nanoparticles is becoming increasingly popular as a simple and environmentally friendly method. In this study, iron-based nanoparticles (Fe-NPs) were successfully prepared using a peanut skin extract, where the peanut skin as an agricultural waste product was easy to obtain in large quantities, relatively inexpensive and also environmentally friendly. The average particle size of the produced Fe-NPs changed with their post-synthesis drying conditions. Under vacuum drying at 60 °C, the smallest average particle size obtained was 10.6 nm. The synthesized Fe-NPs had a core shell-like structure, in which the core was composed of Fe
Chemometric Methods to Predict of Pb in Urban Soil from Port Pirie, South Australia, using Spectrally Active of Soil Carbon
Publisher: Informa UK Limited
Date: 07-05-2018
Enhancing solar steam generation using a highly thermally conductive evaporator support
Publisher: Elsevier BV
Date: 12-2021
Mechanism for the simultaneous removal of Sb(III) and Sb(V) from mining wastewater by phytosynthesized iron nanoparticles
Publisher: Elsevier BV
Date: 11-2022
DOI: 10.1016/J.CHEMOSPHERE.2022.135778
Abstract: Since antimony (Sb) is a toxic metalloid cost-effective method for the simultaneous removal of the two major Sb species from mining wastewater has attracted much attention. In this study, phytosynthesized iron nanoparticles (nFe) prepared using a eucalyptus leaf extract were successfully used to simultaneously remove Sb(III) and Sb(V) via an adsorption and oxidation mechanism with removal efficiencies of 100 and 97.7% for Sb(III) and Sb(V), respectively. Advanced analysis using X-ray photoelectron spectroscopy (XPS), ion chromatography-atomic fluorescence spectroscopy (IC-AFS), and electrochemical analysis confirmed that Sb(III) was oxidized to Sb(V) by Fe(III) on the nFe surface while Scanning Electron Microscopy (SEM) and Energy Dispersive Spectroscopy (EDS) indicated that both Sb(III) and Sb(V) were adsorbed onto nFe. Adsorption of both Sb(III) and Sb(V) best fit the Langmuir adsorption model with R
Impact of green reduced graphene oxide on sewage sludge bioleaching with Acidithiobacillus ferrooxidanse
Publisher: Elsevier BV
Date: 12-2020
Simultaneous removal of Pb(II) and rifampicin from wastewater by iron nanoparticles synthesized by a tea extract
Publisher: Elsevier BV
Date: 2020
Bladder cancer: ESMO Practice Guidelines for diagnosis, treatment and follow-up
Publisher: Elsevier BV
Date: 09-2014
Removal of methyl orange from aqueous solution using a 1.6 MHz ultrasonic atomiser
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C3RA44343D
Plant uptake of 14C-EDTA, 14C-citrate, and 14C-histidine from chelator-buffered and conventional hydroponic solutions
Publisher: Springer Science and Business Media LLC
Date: 2003
A Hollow and Compressible 3D Photothermal Evaporator for Highly Efficient Solar Steam Generation without Energy Loss
Publisher: Wiley
Date: 11-03-2021
Boosting solar steam generation by structure enhanced energy management
Publisher: Elsevier BV
Date: 08-2020
Screening Indian Mustard Genotypes for Phytoremediating Arsenic-Contaminated Soils
Publisher: Wiley
Date: 21-11-2013
Stackable nickel–cobalt@polydopamine nanosheet based photothermal sponges for highly efficient solar steam generation
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/D0TA03799K
Abstract: Ni 1 Co 3 @PDA nanosheets were utilized as photothermal materials in a kerosene l -like evaporator for solar steam generation. A high evaporation rate of 2.42 kg m −2 h −1 with a corresponding energy efficiency beyond the theoretical limit was achieved.
Determination of carboxylic acids from plant root exudates by ion exclusion chromatography with ESI-MS
Publisher: Springer Science and Business Media LLC
Date: 21-11-2008
Prediction of lead concentration in soil using reflectance spectroscopy
Publisher: Elsevier BV
Date: 06-2014
Parallel derivation of isogenic human primed and naive induced pluripotent stem cells
Publisher: Springer Science and Business Media LLC
Date: 24-01-2018
DOI: 10.1038/S41467-017-02107-W
Abstract: Induced pluripotent stem cells (iPSCs) have considerably impacted human developmental biology and regenerative medicine, notably because they circumvent the use of cells of embryonic origin and offer the potential to generate patient-specific pluripotent stem cells. However, conventional reprogramming protocols produce developmentally advanced, or primed, human iPSCs (hiPSCs), restricting their use to post-implantation human development modeling. Hence, there is a need for hiPSCs resembling preimplantation naive epiblast. Here, we develop a method to generate naive hiPSCs directly from somatic cells, using OKMS overexpression and specific culture conditions, further enabling parallel generation of their isogenic primed counterparts. We benchmark naive hiPSCs against human preimplantation epiblast and reveal remarkable concordance in their transcriptome, dependency on mitochondrial respiration and X-chromosome status. Collectively, our results are essential for the understanding of pluripotency regulation throughout preimplantation development and generate new opportunities for disease modeling and regenerative medicine.
Health-related toxicity of emerging per- and polyfluoroalkyl substances: comparison to legacy PFOS and PFOA
Publisher: Elsevier BV
Date: 09-2022
DOI: 10.1016/J.ENVRES.2022.113431
Abstract: Per- and polyfluoroalkyl substances (PFAS) are highly persistent, manufactured chemicals used in various manufacturing processes and found in numerous commercial products. With over 9000 compounds belonging to this chemical class, there is increasing concern regarding human exposure to these compounds due to their persistent, bioaccumulative, and toxic nature. Human exposure to PFAS may occur from a variety of exposure sources, including, air, food, indoor dust, soil, water, from the transfer of PFAS from non-stick wrappers to food, use of cosmetics, and other personal care products. This critical review presents recent research on the health-related impacts of PFAS exposure, highlighting compounds other than Perfluorooctanoic acid (PFOA) and Perfluoroctane sulfonate (PFOS) that cause adverse health effects, updates the current state of knowledge on PFAS toxicity, and, where possible, elucidates cause-and-effect relationships. Recent reviews identified that exposure to PFAS was associated with adverse health impacts on female and male fertility, metabolism in pregnancy, endocrine function including pancreatic dysfunction and risk of developing Type 2 diabetes, lipid metabolism and risk of childhood adiposity, hepatic and renal function, immune function, cardiovascular health (atherosclerosis), bone health including risk for dental cavities, osteoporosis, and vitamin D deficiency, neurological function, and risk of developing breast cancer. However, while cause-and-effect relationships for many of these outcomes were not able to be clearly elucidated, it was identified that 1) the evidence derived from both animal models and humans suggested that PFAS may exert harmful impacts on both animals and humans, however extrapolating data from animal to human studies was complicated due to differences in exposure/elimination kinetics, 2) PFAS precursor kinetics and toxicity mechanism data are still limited despite ongoing exposures, and 3) studies in humans, which provide contrasting results require further investigation of the long-term-exposed population to better evaluate the biological toxicity of chronic exposure to PFAS.
Tolerance capacity of Turkish genotypes of barley (Hordeum vulagare L.) for cadmium stress
Publisher: Triveni Enterprises
Date: 11-2018
Decline in extractable antibiotics in manure-based composts during composting
Publisher: Elsevier BV
Date: 2012
DOI: 10.1016/J.WASMAN.2011.07.026
Abstract: A wide variety of antibiotics have been detected in natural water s les and this is of potential concern because of the adverse environmental effects of such antibiotic residues. One of the main sources of antibiotics effluence to the surrounding environment is livestock manures which often contain elevated concentrations of veterinary antibiotics (VAs) which survive digestion in the animal stomach following application in animal husbandry practices. In Korea, livestock manures are normally used for compost production indicating that there is potential for antibiotic release to the environment through compost application to agricultural lands. Therefore, reduction of the amount of VAs in composts is crucial. The purpose of this study was to understand the influence of the composting process and the components of the compost on the levels of three common classes of antibiotics (tetracyclines, sulfonamides, and macrolides). Composted materials at different stages of composting were collected from compost manufacturing plants and the variation in antibiotic concentrations was determined. Three different antibiotics, chlortetracycline (CTC), sulfamethazine (SMZ), and tylosin (TYL) at three different concentrations (2, 10, and 20mgkg(-1)) were also applied to a mixture of pig manure and sawdust and the mixtures incubated using a laboratory scale composting apparatus to monitor the changes in antibiotic concentrations during composting together with the physicochemical properties of the composts. During composting, in both field and lab-scale investigations, the concentrations of all three different antibiotics declined below the relevant Korean guideline values (0.8mgkg(-1) for tetracyclines, 0.2mgkg(-1) for sulfonamides and 1.0mgkg(-1) for macrolides). The decline of tetracycline and sulfonamide concentrations was highly dependent on the presence of sawdust while there was no influence of sawdust on TYL decline.
Multivariate analysis of accumulation and critical risk analysis of potentially hazardous elements in forage crops
Publisher: Springer Science and Business Media LLC
Date: 02-2022
DOI: 10.1007/S10661-022-09799-8
Abstract: Potentially hazardous element (PHE) contamination of aquifers is an issue of global concern, as this not only affects soil and plants but also exerts a negative impact on livestock. The current study assessed the extent of PHE (cadmium, copper, nickel, and lead) contamination of groundwater, soil, and forage crops in Shorkot, Punjab, Pakistan. Low concentrations of PHEs, particularly Cd and Cu, were found in drinking water which remained below detection limits. The concentrations of Ni and Pb in water s les were 0.1 and 0.06 mg L
Transport of engineered nanoparticles in soils and aquifers
Publisher: Canadian Science Publishing
Date: 03-2019
DOI: 10.1139/ER-2018-0022
Abstract: Transport and deposition behaviour of engineered nanoparticles (ENPs) in natural aquifers and soil systems is a key determinant of the fate of these materials in environmental systems. A growing number of experimental studies are being conducted worldwide to address transport and deposition of ENPs in porous media (PM). Here we comprehensively review the main mechanisms and factors affecting the mobility of the environmentally important ENPs in natural PM. A variety of different processes including those that promote mobility and result in elution from the PM and those that hinder their mobility and promote ENP retention can influence ENP’s mobility through soil and aquifer media. The most important contributing factors regarding ENP transport in PM include: the physicochemical properties of the ENP, the media, the hydrodynamics of the system, and the background solution characteristics. Results from several studies conducted on the most common and environmentally important ENPs have shown that under natural environmental conditions, different types of ENPs show different transport behaviour in soil and aquifer systems. Additionally, the importance of media matrix and mobile solution factors in governing mobility of ENPs varies from one type of ENP to another.
Contribution of humoral immune responses to the antitumor effects mediated by anthracyclines
Publisher: Springer Science and Business Media LLC
Date: 07-06-2013
DOI: 10.1038/CDD.2013.60
Erratum to Screening Indian Mustard Genotypes for Phytoremediating Arsenic-Contaminated Soils [Clean - Soil, Air, Water, 41(2), (2013), 195-201] DOI:10.1002/clen.201100572
Publisher: Wiley
Date: 03-2013
Unravelling the mechanism of amitriptyline removal from water by natural montmorillonite through batch adsorption, molecular simulation and adsorbent characterization studies
Publisher: Elsevier BV
Date: 09-2021
Geochemical and Spatial Appraisal of Fluoride in the Soils of Indo‐Gangetic Plains of India Using Multivariate Analysis
Publisher: Wiley
Date: 03-2013
An IgG-induced neutrophil activation pathway contributes to human drug-induced anaphylaxis
Publisher: American Association for the Advancement of Science (AAAS)
Date: 10-07-2019
DOI: 10.1126/SCITRANSLMED.AAT1479
Abstract: Co-existence of drug-specific IgE and IgG antibodies aggravates neuromuscular-blocking agent-induced anaphylaxis in humans.
Male breast cancer in BRCA1 and BRCA2 mutation carriers: pathology data from the Consortium of Investigators of Modifiers of BRCA1/2
Publisher: Springer Science and Business Media LLC
Date: 09-02-2016
Enhanced cadmium accumulation in maize roots - The impact of organic acids
Publisher: Springer Science and Business Media LLC
Date: 07-11-2006
Immobilizer-assisted management of metal-contaminated agricultural soils for safer food production
Publisher: Elsevier BV
Date: 07-2012
DOI: 10.1016/J.JENVMAN.2012.02.001
Abstract: Production of food crops on metal contaminated agricultural soils is of concern because consumers are potentially exposed to hazardous metals via dietary intake of such crops or crop derived products. Therefore, the current study was conducted to develop management protocols for crop cultivation to allow safer food production. Metal uptake, as influenced by pH change-induced immobilizing agents (dolomite, steel slag, and agricultural lime) and sorption agents (zeolite and compost), was monitored in three common plants representative of leafy (Chinese cabbage), root (spring onion) and fruit (red pepper) vegetables, in a field experiment. The efficiency of the immobilizing agents was assessed by their ability to decrease the phytoavailability of metals (Cd, Pb, and Zn). The fruit vegetable (red pepper) showed the least accumulation of Cd (0.16-0.29 mgkg(-1) DW) and Pb (0.2-0.9 mgkg(-1) DW) in edible parts regardless of treatment, indicating selection of low metal accumulating crops was a reasonable strategy for safer food production. However, safer food production was more likely to be achievable by combining crop selection with immobilizing agent amendment of soils. Among the immobilizing agents, pH change-induced immobilizers were more effective than sorption agents, showing decreases in Cd and Pb concentrations in each plant well below standard limits. The efficiency of pH change-induced immobilizers was also comparable to reductions obtained by 'clean soil cover' where the total metal concentrations of the plow layer was reduced via capping the surface with uncontaminated soil, implying that pH change-induced immobilizers can be practically applied to metal contaminated agricultural soils for safer food production.
A DOC coagulant, gypsum treatment can simultaneously reduce As, Cd and Pb uptake by medicinal plants grown in contaminated soil
Publisher: Elsevier BV
Date: 02-2018
DOI: 10.1016/J.ECOENV.2017.10.067
Abstract: The efficiency of gypsum, as a dissolved organic carbon (DOC) coagulator, for the simultaneous immobilization of two heavy metals (Cd and Pb) and one metalloid (As) in agricultural soils near an abandoned mining site was examined. The agricultural soil was defined as long-term contaminated as As (1540mgkg
Enhanced removal of pefloxacin from aqueous solution by adsorption and Fenton-like oxidation using NH2-MIL-88B
Publisher: Elsevier BV
Date: 02-2021
Green reduction of graphene oxide using Bacillus sphaericus
Publisher: Elsevier BV
Date: 2022
Potential for Enhanced Phytoremediation of Landfills Using Biosolids - A Review
Publisher: Elsevier
Date: 2011
CDK12 Inhibition Reverses De Novo and Acquired PARP Inhibitor Resistance in BRCA Wild-Type and Mutated Models of Triple-Negative Breast Cancer
Publisher: Elsevier BV
Date: 11-2016
Effects of Copper, Lead, and Cadmium on the Sorption of 2,4,6-Trichlorophenol Onto and Desorption from Wheat Ash and Two Commercial Humic Acids
Publisher: American Chemical Society (ACS)
Date: 07-2009
DOI: 10.1021/ES803357B
Abstract: The effects of copper (Cu2+), lead (Pb2+), and cadmium (Cd2+) on the sorption of 2,4,6-trichlorophenol (TCP) to and desorption from wheat ash and two commercial humic acids were studied. Copper and Pb2+ diminished the sorption of TCP onto all adsorbents, and made desorption of TCP less hysteretic from ash and German humic acids (GeHA), but more hysteretic from Tianjin humic acids (TJHA). Cadmium had little effect on TCP sorption and desorption. Fourier-transform infra red (FTIR) and X-ray absorption spectroscopy (XAS) in conjunction with fluorescence quenching studies provided insights into the mechanisms of TCP sorption and desorption as affected by Cu2+ and Pb2+, indicating that complexation of Cu2+ and Pb2+ was likely via carboxylic, hydroxylic and phenolic groups of ash, TJHA and GeHA, and that theses same functional groups also reacted with TCP during sorption. In contrast, Cd, a "soft acid", had no effect on the adsorption of TCP. Hydration shells of dense water around adsorbed Cu2+ and Pb2+ ions may also compete with TCP for available surface area. Fluorescence quenching of pyrene verified that for TJHA, Cu2+ and Pb2+ promoted the formation of supramolecular associations with interior hydrophobic regions separated from aqueous surroundings by exterior hydrophilic layers.
Removal mechanism of 17β-estradiol by carbonized green synthesis of Fe/Ni nanoparticles
Publisher: Elsevier BV
Date: 03-2022
DOI: 10.1016/J.CHEMOSPHERE.2021.132777
Abstract: Even a small concentration of estrogen released into the environment can cause great damage to the surrounding ecosystem, with potential teratogenic and carcinogenic hazards to many organisms. In this study, carbonized green synthesized Fe/Ni NPs, with a maximum adsorption capacity of 44.32 mg g
Mechanism and impact of synthesis conditions on the one-step green synthesis of hybrid RGO@Fe/Pd nanoparticles
Publisher: Elsevier BV
Date: 03-2020
DOI: 10.1016/J.SCITOTENV.2019.136308
Abstract: While a one-step green synthesis of a hybrid material composed of reduced graphene oxide and bimetallic Fe/Pd nanoparticles (RGO@Fe/Pd NPs) was previously successfully reported and evaluated for the removal of organic contaminants, the relationship between the formation of RGO@Fe/Pd and the resulting reactivity was unclear. In this paper the impact of the specific synthetic conditions on the reactivity of RGO@Fe/Pd was investigated in order to enhance the removal efficiency of antibiotics such as rif icin. The hybrid material (RGO@Fe/Pd) successfully removed 96.1% of rif icin compared to only 63.5 and 81.0% for Fe nanoparticles and RGO, respectively. The best synthetic conditions for the formation of RGO@Fe/Pd included GO/Fe = 1:1 and Fe/Pd = 100: 5. In addition, GC-MS and FTIR were used to identify the main reducing biomolecules in the green tea extract responsible for the one-step synthesis of RGO@Fe/Pd as Catechol, Caffeine, 1,3,5-Benzenetriol. The morphology, size and surface composition of RGO@Fe/Pd was characterized by Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), X-Ray powder diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). These advanced characterization techniques suggested that during synthesis GO was initially converted to RGO, and thereafter Fe/Pd NPs (10-50 nm) were dispersed on RGO. Finally, a plausible formation mechanism for the one-step synthesis of the hybrid material was proposed.
Influence of plant roots on rhizosphere soil solution composition of long-term contaminated soils
Publisher: Elsevier BV
Date: 02-2010
Using carbonized hybrid FeNPs@ZIF-8 for the sustained release of doxorubicin hydrochloride
Publisher: Elsevier BV
Date: 11-2022
Immobilization of cadmium in polluted soils by phytogenic iron oxide nanoparticles
Publisher: Elsevier BV
Date: 04-2019
DOI: 10.1016/J.SCITOTENV.2018.12.391
Abstract: While phytogenic nanomaterials have been successfully used to remove heavy metals in wastewater, the potential to successfully use such materials to immobilize heavy metals in soils is still unclear. In this study, phytogenic iron oxide nanoparticles (PION) were used to immobilize cadmium (Cd) in six soils. Amendment with PION effectively immobilized Cd, with a concomitant increase in the concentrations of iron oxides, soil pH and dissolved organic carbon (DOC) under both oxic and anoxic conditions. However, observed changes in soil properties and Cd fractions were different under oxic and anoxic conditions. After PION application, the exchangeable Cd fraction decreased by up to 91 and 69%, while the carbonate bound Cd fraction decreased by up to 61 and 75%, under oxic and anoxic conditions, respectively. Pearson correlation analysis revealed that under both oxic and anoxic conditions, Cd fractions were significantly and positively correlated with free iron oxide content and pH, where free iron oxide content was positively correlated with amorphous iron oxide, DOC and pH. The Cd immobilization mechanisms potentially involved either (1) formation of insoluble hydroxides at elevated pH (2) participation of biomolecules released from PION in ligand complexation with Cd and (3) co-precipitated of Cd during the formation of iron oxides. This study provided new insights into the potential effects of PION applications for practical Cd immobilization in contaminated soils.
Efficient removal of As (Ⅲ) by calcined green synthesized bimetallic Fe/Pd nanoparticles based on adsorption and oxidation
Publisher: Elsevier BV
Date: 03-2020
Determination of NTA and EDTA and speciation of their metal complexes in aqueous solution by capillary electrophoresis
Publisher: American Chemical Society (ACS)
Date: 21-01-2000
DOI: 10.1021/ES990309M
Contribution of Human FcγRs to Disease with Evidence from Human Polymorphisms and Transgenic Animal Studies.
Publisher: Frontiers Media SA
Date: 30-05-2014
Coadsorption of ciprofloxacin and Cu(II) on montmorillonite and kaolinite as affected by solution pH
Publisher: American Chemical Society (ACS)
Date: 23-12-2010
DOI: 10.1021/ES902902C
Abstract: The coadsorption of ciprofloxacin (Cip) and Cu(II) on montmorillonite and kaolinite was studied between pH 4.0 and 9.5. At pH 6.0 due to the stronger affinity of Cip-Cu(II) complexes compared to sole Cip(-) or Cip(+/-), or Cip sorption via a Cu(II) bridge increased. In contrast, Cip increased Cu(II) adsorption on montmorillonite at pH 8.0, Cu(OH)(2) (s) and [Cu(II)(Cip(-))(2)](0) precipitated out of solution or on the montmorillonite or kaolinite surface, which was not considered evidence for either the sorption of Cip or the adsorption of Cu(II).
Stability of titania nanoparticles in soil suspensions and transport in saturated homogeneous soil columns
Publisher: Elsevier BV
Date: 04-2009
DOI: 10.1016/J.ENVPOL.2008.11.006
Abstract: The stability of TiO(2) nanoparticles in soil suspensions and their transport behavior through saturated homogeneous soil columns were studied. The results showed that TiO(2) could remain suspended in soil suspensions even after settling for 10 days. The suspended TiO(2) contents in soil suspensions after 24h were positively correlated with the dissolved organic carbon and clay content of the soils, but were negatively correlated with ionic strength, pH and zeta potential. In soils containing soil particles of relatively large diameters and lower solution ionic strengths, a significant portion of the TiO(2) (18.8-83.0%) readily passed through the soils columns, while TiO(2) was significantly retained by soils with higher clay contents and salinity. TiO(2) aggregate sizes in the column outflow significantly increased after passing through the soil columns. The estimated transport distances of TiO(2) in some soils ranged from 41.3 to 370 cm, indicating potential environmental risk of TiO(2) nanoparticles to deep soil layers.
Applicability of the Charm II system for monitoring antibiotic residues in manure-based composts
Publisher: Elsevier BV
Date: 2011
DOI: 10.1016/J.WASMAN.2010.08.018
Abstract: The effluence of veterinary antibiotics (VAs) to aquatic and terrestrial environments is of concern due to the potential adverse effects on human health, such as the production of antibiotic resistant bacteria. One of the main pathways for antibiotics to enter the environment is via the application of manure and/or manure-based composts as an alternative organic fertilizer to agricultural lands. While a wide ersity of manure-based composts are produced in Korea, there is currently no regulatory guideline for VA residues. Hence, monitoring and limiting the concentration of VA residues in manure and/or manure-based composts prior to application to the lands is important to mitigate any environmental burden. The current study was conducted to examine the applicability of the Charm II antibiotic test system for monitoring tetracyclines, sulfonamides and macrolides in manure-based composts. The Charm II system was a highly reproducible method for determining whether VA residue concentrations in manure-based compost exceeded specific guideline values. A wide range of manure-based composts and liquid fertilizers commercially available in Korea were examined using the Charm II system to monitor the residues of the target VAs. For this, the guideline concentrations of VA residues (0.8 mg kg(-1) for tetracyclines, 0.2 mg kg(-1) for sulfonamides, and 0.1 mg kg(-1) for macrolides) stated in 'Official Standard of Feeds' under the 'Control of Livestock and Fish Feed Act' in Korea were adopted to establish control points. Of the 70 compost s les examined 12 exceeded 0.8 mg kg(-1) for tetracyclines and 21 exceeded 0.2 mg kg(-1) for sulfonamides. Of the 25 liquid fertilizer s les examined most s les exceeded these prospective guidelines.
Self- immobilized bio-nanomaterials based on hybridized green reduced graphene and Burkholderia vietnamiensis C09V for enhanced removal of Sb species from mine wastewater
Publisher: Elsevier BV
Date: 09-2023
Heavy metal accumulation and mobility in a soil profile depend on the organic waste type applied
Publisher: Springer Science and Business Media LLC
Date: 21-06-2019
Increased As load to the Uchen stream due to mine drainage and soils in the abandoned Kangwon mining district of Korea
Publisher: Springer Science and Business Media LLC
Date: 21-05-2012
Sec22b is a critical and nonredundant regulator of plasma cell maintenance
Publisher: Proceedings of the National Academy of Sciences
Date: 03-01-2023
Abstract: Despite the essential role of plasma cells in health and disease, the cellular mechanisms controlling their survival and secretory capacity are still poorly understood. Here, we identified the soluble N-ethylmaleimide-sensitive factor attachment protein receptor (SNARE) Sec22b as a unique and critical regulator of plasma cell maintenance and function. In the absence of Sec22b, plasma cells were hardly detectable and serum antibody titers were dramatically reduced. Accordingly, Sec22b -deficient mice fail to mount a protective immune response. At the mechanistic level, we demonstrated that Sec22b contributes to efficient antibody secretion and is a central regulator of plasma cell maintenance through the regulation of their transcriptional identity and of the morphology of the endoplasmic reticulum and mitochondria. Altogether, our results unveil an essential and nonredundant role for Sec22b as a regulator of plasma cell fitness and of the humoral immune response.
Simultaneous removal of tetracycline and oxytetracycline antibiotics from wastewater using a ZIF-8 metal organic-framework
Publisher: Elsevier BV
Date: 03-2019
DOI: 10.1016/J.JHAZMAT.2018.12.047
Abstract: In this paper, a Zeolite Imidazole Framework-8 (ZIF-8), was investigated for the removal of a mixture of two common antibiotics, tetracycline (TC) and oxytetracycline hydrochloride (OTC). Batch experiments showed that 90.7% of TC and 82.5% of OTC were simultaneously removed using ZIF-8. The maximum adsorption capacities for TC and OTC were 303.0 and 312.5 mg g
Phytoavailability-based threshold values for cadmium in soil for safer crop production
Publisher: Elsevier BV
Date: 09-2020
Making interfacial solar evaporation of seawater faster than fresh water
Publisher: Research Square Platform LLC
Date: 19-10-2023
A Facultative Electroactive Chromium(VI)-Reducing Bacterium Aerobically Isolated From a Biocathode Microbial Fuel Cell
Publisher: Frontiers Media SA
Date: 26-11-2018
Chemistry of chromium in soils with emphasis on tannery waste sites
Publisher: Springer New York
Date: 2003
Abstract: Worldwide chromium contamination of soils has arisen predominantly from the common practice of land-based disposal of tannery wastes under the assumption that the dominant species in the tannery waste would be the thermodynamically stable Cr(III) species. However, significant levels of toxic Cr(VI) recently detected in surface water and groundwater in India, China, Australia, and elsewhere raise critical questions relating to current disposal criteria for Cr-containing wastes. It now appears that despite the thermodynamic stability of Cr(III), the presence of certain naturally occurring minerals, especially Mn oxides, can enhance oxidation of Cr(III) to Cr(VI) in the soil environment. This factor is of public concern because at high pH, Cr(VI) is bioavailable, and it is this form that is highly mobile and therefore poses the greatest risk of groundwater contamination. A review of the current literature indicates that extensive research has been performed on the speciation of Cr in soil, the effect of pH on soil solution concentrations of Cr(III) and Cr(VI), soil adsorption phenomenon of Cr species, redox reactions, and transformation of Cr(II) and Cr(VI) together with remediation strategies to decontaminate Cr-contaminated soils. Most of the studies were conducted using an uncontaminated soil artificially spiked with Cr, and very limited research has been conducted in the contaminated soil environment. Furthermore, studies on tannery waste contaminated soils are limited, and obviously a serious gap of knowledge exists in understanding the influence of long-term tannery waste contamination on Cr behavior in soil.
Evaluation of enhancement techniques for the dechlorination of DDT by nanoscale zero-valent iron
Publisher: Elsevier BV
Date: 02-2021
Reduced graphene oxide/iron nanoparticles used for the removal of Pb (II) by one step green synthesis
Publisher: Elsevier BV
Date: 12-2019
DOI: 10.1016/J.JCIS.2019.09.058
Abstract: While nanomaterials are increasingly being proposed for contaminant remediation, a major challenge is how to develop high removal functionality while maintaining low cost and environmental friendliness. In this study, a hybrid reduced graphene oxide/iron nanoparticle (rGO/Fe NPs) was prepared via the in situ reduction of GO and FeCl
Identification of the phytoremediation potential of indian mustard genotypes for copper, evaluated from a hydroponic experiment
Publisher: Wiley
Date: 20-03-2013
Wastewater treatment and role of green synthesized metal oxide nanocomposites
Publisher: IGI Global
Date: 2019
DOI: 10.4018/978-1-5225-5745-6.CH012
Abstract: Water pollution by metalloids is a global environmental concern. Owing to their propensity for bioaccumulation, water solubility, and interaction with environment, they are threatening both human and ecosystem health. Inherent limitations like low efficiency, sensitive operating conditions, and high capital and operating costs are associated with conventional removal methods which restricts adoption of these technologies on large scale. While adsorption is commonly recognized as both an effective and affordable remediation technology, many common adsorbents often have inherited limitations including non-renewability and high operating costs. Thus, limitations in conventional remediation technologies have headed to the rapid progression of new avenues for advanced treatment technologies for metalloid pollutant removal such as green nanotechnology. In contrast to many of the currently available adsorbents, nanoparticles often have unique properties such as tiny size, more active sites and big surface area, easy separation, and high reactivity that enhance removal efficiencies.
Application of soil amendments to contaminated soils for heavy metal immobilization and improved soil quality?a critical review
Publisher: Informa UK Limited
Date: 21-02-2018
An effective dietary survey framework for the assessment of total dietary arsenic intake in Bangladesh: Part-A - FFQ design
Publisher: Springer Science and Business Media LLC
Date: 27-01-2009
DOI: 10.1007/S10653-008-9234-1
Abstract: The accurate assessment of dietary intake patterns is important for the determination of total dietary arsenic (As) exposure in As-contaminated regions of Bangladesh. Food intake questionnaires are a common means of assessing food intake. A food frequency questionnaire (FFQ) was designed to assess the daily intake of frequently consumed food items and was successfully implemented to assess dietary patterns and intake of the rural populations in 18 villages from three Districts of Bangladesh (Comilla, Manikganj Sadar, and Munshiganj). The FFQ presented in this paper comprises a complete set of tools which allowed not only collection of information on dietary patterns but also information on the spatial characteristics of the landscape, socio-demographic indicators, and geographic locations of the identified environmental media of the contaminants, which resulted in As exposure to humans. The FFQ was designed in three sections: (1) general household information, (2) household water and rice information, and (3) in idual dietary intake of other foods. The dietary intake of other food was then further sub ided into five different food subgroups: (i) grain intake, (ii) protein intake, (iii) fruit intake (iv), vegetable intake, and (v) dal (pulse) intake. During the design and development of the FFQ, emphasis was given to the source of food, the frequency (day/week/month) of consumption, and the daily amount of food consumed by each adult male, adult female, and child to accurately determine the dietary pattern and intake of arsenic in the rural population of Bangladesh.
Dataset characteristics influence the performance of different interpolation methods for soil salinity spatial mapping
Publisher: Springer Science and Business Media LLC
Date: 28-10-2019
DOI: 10.1007/S10661-019-7844-Y
Abstract: This study compared the performance of different interpolation methods for mapping soil salinity of three different agricultural fields having the same land use but different dataset characteristics. Four common spatial interpolation methods including global polynomial interpolation (GPI), inverse distance weighted (IDW), ordinary kriging (OK), and radial basis functions (RBF) were employed for mapping soil EC. The performance of interpolation methods in predicting soil EC was evaluated based on mean bias error, root mean square error, mean absolute percentage error, and coefficient of determinations criteria. Results showed that dataset characteristics, including central tendency and distribution, were significantly different among the studied fields. Experimental semivariogram and fitted model parameters indicated that three studied fields were also different in their spatial dependence strength. Considering all of the performance assessment measures used, the best interpolation method for fields A and C was OK and IDW for field B. The performance of interpolation methods was found to be affected by data characteristics of the studied fields, which were mostly ascribed to management practices. This study suggests in order to obtain accurate mapping of soil salinity in agricultural fields, it is essential to first find the best spatial interpolation method compatible with the characteristics of the collected data from the selected agricultural land.
First-Line Crizotinib versus Chemotherapy in ALK-Positive Lung Cancer
Publisher: Massachusetts Medical Society
Date: 04-12-2014
Mechanistic insight into loading of doxorubicin hydrochloride onto carbonized FeNPs@ZIF-8 composite
Publisher: Elsevier BV
Date: 06-2023
Synthesis of ferroferric oxide@silicon dioxide/cobalt-based zeolitic imidazole frameworks for the removal of doxorubicin hydrochloride from wastewater
Publisher: Elsevier BV
Date: 10-2022
DOI: 10.1016/J.JCIS.2022.05.150
Abstract: Due to its low-cost, eco-friendliness and easy mode of separation biosynthesized magnetic ferroferric oxide (Fe
A new nFe@ZIF-8 for the removal of Pb(II) from wastewater by selective adsorption and reduction
Publisher: Elsevier BV
Date: 04-2020
DOI: 10.1016/J.JCIS.2020.01.014
Abstract: A nFe@ZIF-8 composite, which combined the tailorable porosity of ZIF-8 with the versatile functionality of Fe nanoparticles (nFe), was synthesized for Pb(II) removal. Batch adsorption experiments showed that more than 95.3% of Pb(II) was removed from aqueous solution at an initial concentration of 50 mg L
Transfer functions for estimating phytoavailable Cd and Pb in metal contaminated paddy and upland soils: Implications for phytoavailability based land management
Publisher: Elsevier BV
Date: 05-2016
Mechanistic insight into the one step green synthesis of hybrid rGO/Fe NPs
Publisher: Elsevier BV
Date: 06-2022
Long-term assessment of the environmental fate of heavy metals in agricultural soil after cessation of organic waste treatments
Publisher: Springer Science and Business Media LLC
Date: 12-09-2014
DOI: 10.1007/S10653-013-9569-0
Abstract: The current study examined the anthropogenic accumulation and natural decrease in metal concentrations in agricultural soils following organic waste application. Three common organic wastes, including municipal sewage sludge, alcohol fermentation processing sludge, and pig manure compost (PMC), were applied annually to an agricultural soil under field conditions over 7 years (1994-2000) at a rate of 12.5, 25, and 50 ton ha(-1) year(-1) and the soil accumulation of three metals of concern (Cu, Pb, and Zn) was monitored. Subsequently, organic waste amendments ceased and the experimental plots were managed using conventional fertilization for another 10 years (2001-2010) and the natural decrease in metal concentrations monitored. Although Cu and Zn concentrations in all experimental plots did not exceed the relevant guideline values (150 mg kg(-1) for Cu and 300 mg kg(-1) for Zn), significant increases in metal concentrations were observed from cumulative application of organic wastes over 7 years. For instance, PMC treatment resulted in an increase in Cu and Zn from 9.8 and 72 mg kg(-1) to 108.2 and 214.3 mg kg(-1), respectively. In addition, the natural decrease in Cu and Zn was not significant as soils amended with PMC showed only a 16 and 19 % decline in Cu and Zn concentrations, respectively, even 10 years after amendment ceased. This research suggested that more attention must be paid during production of organic waste-based amendments and at the application stage.
An original phylogenetic approach identified mitochondrial haplogroup T1a1 as inversely associated with breast cancer risk in BRCA2 mutation carriers
Publisher: Springer Science and Business Media LLC
Date: 25-04-2015
More from less: improving solar steam generation by selectively removing a portion of evaporation surface
Publisher: Elsevier BV
Date: 08-2022
Biosynthesis of silver nanoparticles using three different fruit extracts: Characterization, formation mechanism and estrogen removal
Publisher: Elsevier BV
Date: 08-2022
DOI: 10.1016/J.JENVMAN.2022.115224
Abstract: Plant-mediated synthesis of silver nanoparticles (Ag NPs) is a green and economically viable method, which can offer numerous benefits over traditional chemical and physical methods. In this paper, three fruit extracts (tomato, orange, and grapefruit) served simultaneously as stabilizing and reducing agents during the biosynthesis of Ag NPs. The formation of Ag NPs, were monitored using the UV-visible absorption spectra of Ag NPs which exhibited three distinct bands centered at 439, 413, and 410 nm. SEM and TEM analysis indicated that these bands corresponded to three distinct spherical-shaped Ag NPs having average particle sizes of 73, 24, and 31 nm, respectively. XRD and EDS spectral analyses were used to verify the degree of crystallinity, nanostructure, and presence of Ag NPs. Advanced analysis using XPS, FTIR, and GC-MS indicated that the Ag NPs were coated with a variety of organic compounds including acids, aldehydes, esters, and ketones, indicating that fruit derived phytochemicals had a significant role in synthesis, and subsequently a mechanism of Ag NPs formation was proposed. The fabricated nanoparticles were also successfully used in Fenton-like oxidation for the environmental remediation of estrone and estriol, with removal efficiencies of 52.1 and 35.9%, respectively.
Confirmation of vanadium complex formation using electrospray mass spectrometry and determination of vanadium speciation by sample stacking capillary electrophoresis
Publisher: Elsevier BV
Date: 02-2007
DOI: 10.1016/J.ACA.2006.12.008
Abstract: Capillary zone electrophoresis (CZE) with UV detection was used to determine vanadium species. Nitrilotriacetic acid (NTA), hydroxyethylethylenediaminetriacetic acid (HEDTA), ethylenediaminetetraacetic acid (EDTA), diethylenetriaminepentaacetic acid (DTPA), ethylene glycol-bis(2-aminoethylether)-tetraacetic acid (EGTA) and 2,6-pyridinedicarboxylic acid (PDCA) were investigated to determine whether these ligands formed stable anionic complexes with vanadium. Of all the ligands studied HEDTA was the most suitable ligand because it gave the largest UV response with reasonable migration time. Electrospray mass spectrometry (ES-MS) was used to confirm the formation of [VO(2)(HEDTA)](2-) and [VO(HEDTA)](1-) in solution. An electrolyte containing 25 mM phosphate, 0.25 mM tetradecyltrimethylammonium bromide (TTAB) at pH 5.5 was optimum for the separation of these anionic vanadium complexes. S le stacking techniques, including large-volume s le stacking (LVSS) and field- lified s le injection (FASI), were tested to improve the sensitivity. Best sensitivity was obtained using FASI, with detection limits of 0.001 microM, equivalent to 0.4 microg L(-1), for [VO(2)(HEDTA)](2-) and 0.01 microM, equivalent to 3.4 microg L(-1) for [VO(HEDTA)](1-). The utility of the method for the speciation of V(IV) and V(V) was demonstrated using ground water s les.
Improved recovery selectivity of rare earth elements from mining wastewater utilizing phytosynthesized iron nanoparticles
Publisher: Elsevier BV
Date: 10-2023
Autoantibodies neutralizing type I IFNs are present in ~4% of uninfected individuals over 70 years old and account for ~20% of COVID-19 deaths
Publisher: American Association for the Advancement of Science (AAAS)
Date: 10-08-2021
DOI: 10.1126/SCIIMMUNOL.ABL4340
Abstract: Autoantibodies neutralizing type I IFNs increase in prevalence over 60 years of age and underlie about 20% of all fatal COVID-19 cases.
Arsenic speciation, oxidation and immobilization in an unsaturated soil in the presence of green synthesized iron oxide nanoparticles and humic acid
Publisher: Elsevier BV
Date: 2023
DOI: 10.1016/J.CHEMOSPHERE.2022.137198
Abstract: While the availability of arsenic (As) in soil is well known to be highly correlated with the presence of iron (Fe) oxides and humic acid (HA) in the soil, the relationship between Fe oxides and HA and As species in the soil is less well understood. In this study, As speciation in an unsaturated soil in the presence of external HA and green synthesized Fe oxide nanoparticles (FeNPs) showed that As(V) was mainly distributed to the specifically-bound (F2), amorphous and poorly-crystalline hydrous oxides of Fe, Al (F3) and the well-crystallized hydrous oxides of Fe and Al (F4). While As(III). This was the major component in unsaturated soil, and was mainly distributed to F4 and the residual fraction (F5). As bound to F3 and F5 was most sensitive to the addition of HA and FeNPs, while HA/FeNPs treatment increased the F3-bound As(V) however, it decreased the F5-bound As(III). Nonetheless the effect of HA on As is completely different to the HA/FeNPs treatment. The increase of As(V) in F3 resulted from F5-bound As(III) oxidation when treated by HA/FeNPs. Cyclic voltammetry confirmed that HA and Fe
Phytoaccumulation of copper in willow seedlings under different hydrological regimes
Publisher: Elsevier BV
Date: 07-2012
Magnetic iron nanoparticles calcined from biosynthesis for fluoroquinolone antibiotic removal from wastewater
Publisher: Elsevier BV
Date: 10-2021
NITRATE SELECTIVITY OF ION-EXCHANGE RESINS AND OF THEIR MODEL COMPOUNDS .2. VISCOSITY AND DENSITY OF BENZYLTRIALKYLAMMONIUM SALTS IN AQUEOUS-SOLUTION AND N-14 NMR RELAXATION OF THE NITRATE ION
Publisher: CSIRO Publishing
Date: 1995
DOI: 10.1071/CH9951401
Abstract: The densities and viscosities of benzyltrialkylammonium chlorides and nitrates were determined in aqueous solution the alkyl substituents were methyl, ethyl, propyl , butyl and pentyl . The concentration dependence of the 14N nuclear spin relaxation of the nitrate ion was used to find ion pair association constants for comparison with those derived from conductivity measurements (Part I). Density measurements were used to determine partial molar volumes, and viscosity measurements to find hydrodynamic volumes of the solutes. With the assumption of additivity of ionic volumes, cationic volumes calculated from the two series of chloride and nitrate salts agreed well. The increase in the ratio of hydrodynamic to partial ionic volumes with increasing chain length of the alkyl substituent was interpreted as a corresponding increase in hydrophobic hydration.
Enhanced removal of Sb(III) and Sb(V) using biosynthesized iron sulfide nanoparticles: Identification of biomolecules in the capping layer and its functions
Publisher: Elsevier BV
Date: 08-2023
A new catalyst for the activation of peroxydisulfate: Carbonized manganese oxides nanoparticles derived from green tea extracts
Publisher: Elsevier BV
Date: 04-2023
Salt isolation from waste brine enabled by interfacial solar evaporation with zero liquid discharge
Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D2TA03004G
Abstract: An affordable and easy-to-fabricate solar evaporation-based crystallizer (SEC) was developed to implement interfacial brine evaporation towards zero liquid discharge (ZLD).
Phytoavailability control based management for paddy soil contaminated with Cd and Pb: Implications for safer rice production
Publisher: Elsevier BV
Date: 05-2016
Distribution and extent of heavy metal(loid) contamination in agricultural soils as affected by industrial activity
Publisher: Springer Science and Business Media LLC
Date: 23-06-2020
DOI: 10.1186/S13765-020-00517-X
Abstract: In Korea, rapid industrialization has often caused severe soil and water pollution near industrial complexes. Particularly, heavy metal(loid) contamination of agricultural lands could induce serious long-term problems for crop safety and productivity, requiring continual safety assessment. This study investigated heavy metal(loid) contamination of agricultural lands near fifteen industrial complexes. At each of industrial sites in Gyeongsangbuk-do, topsoils and subsoils were collected at two different distances from each site (0–500 m and 500–1000 m). For comparison, at each site, non-polluted soils were also collected more than 1000 m away from each industrial complex. With the exception of one s le, heavy metal(loid) concentration of all soils were lower than the Korean guidelines for soil contamination. However, the difference between the heavy metal(loid) concentrations of Cu, Pb and Zn in topsoil and subsoil increased the closer the s les were the industrial complexes, which implied that these elements were being generated by industrial activities and were freshly loaded on to near surface soils. While the heavy metal(loid) concentration in the studied sites did not exceed the Korean guideline, the geoaccumulation index of each soil indicated that the degree of Cd, Cu, and Pb contamination was heavily or extremely serious in more than twenty of the examined soils. The elevation of specific metals associated with industrial activity in soils in close proximity to industrial sites is of some concern and should be taken into consideration for the future management of agricultural soils around such complexes as well as the industrial complex operation itself.
A cellulose degrading bacterial strain used to modify rice straw can enhance Cu(II) removal from aqueous solution
Publisher: Elsevier BV
Date: 10-2020
Occurrence and Environmental Fate of Veterinary Antibiotics in the Terrestrial Environment
Publisher: Springer Science and Business Media LLC
Date: 20-04-2011
Adsorption of cadmium onto Al13-pillared acid-activated montmorillonite
Publisher: Elsevier BV
Date: 08-2008
DOI: 10.1016/J.JHAZMAT.2007.12.045
Abstract: The optimal preparation conditions for Al(13)-pillared acid-activated Na(+)-montmorillonite (Al(13)-PAAMt) were (1) an acid-activated Na(+)-montmorillonite (Na(+)-Mt) solution of pH 3.0, (2) a OH(-)/Al(3+) molar ratio of 2.4 and (3) Al(3+)/Na(+)-Mt ratio of 1.0 mmol g(-1). The effects of OH(-)/Al(3+) and Al(3+)/Na(+)-Mt ratios on the adsorption of Cd(2+) onto Al(13)-PAAMt were studied. A comparison of the adsorption of Cd(2+) onto Al(13)-PAAMt, Al(13)-pillared Na(+)-montmorillonite (Al(13)-PMt) and Na(+)-Mt suggested that Al(13)-PAAMt had higher adsorption affinity for Cd(2+) than the other two adsorbents. A pseudo-second-order model described the adsorption kinetics well. Cadmium adsorption followed the Langmuir two-site equation, while desorption was hysteretic.
Pre-adsorption and Fenton-like oxidation of mitoxantrone using hybrid green synthesized rGO/Fe nanoparticles
Publisher: Elsevier BV
Date: 03-2021
Transport of copper as affected by titania nanoparticles in soil columns
Publisher: Elsevier BV
Date: 05-2011
DOI: 10.1016/J.ENVPOL.2011.01.039
Abstract: The effects of TiO2 nanoparticles on the transport of Cu through four different soil columns were studied. For two soils (HB and DX), TiO2 nanoparticles acted as a Cu carrier and facilitated the transport of Cu. For a third soil (BJ) TiO2 nanoparticles also facilitated Cu transport but to a much lesser degree, but for a fourth soil (HLJ) TiO2 nanoparticles retarded the transport of Cu. Linear correlation analysis indicated that soil properties rather than sorption capacities for Cu primary governed whether TiO2 nanoparticles-facilitated Cu transport. The TiO2-associated Cu of outflow in the Cu-contaminated soil columns was significantly positively correlated with soil pH and negatively correlated with CEC and DOC. During passage through the soil columns 46.6-99.9% of Cu initially adsorbed onto TiO2 could be "stripped" from nanoparticles depending on soil, where Cu desorption from TiO2 nanoparticles increased with decreasing flow velocity and soil pH.
Regenerable aerogel‐based thermogalvanic cells for efficient low‐grade heat harvesting from solar radiation and interfacial solar evaporation systems
Publisher: Wiley
Date: 07-11-2023
DOI: 10.1002/EOM2.12302
Abstract: Direct conversion of low‐grade heat into electricity by thermal electrochemical cells is a promising strategy for energy generation. For stable heat‐to‐electricity conversion, maintaining a low‐grade heat induced temperature difference between the cell electrodes is essential. Here, a thermogalvanic cell consisting of a cellulose fiber‐based porous aerogel, a liquid electrolyte, a reduced graphene oxide light absorber, and carbon nanotube‐based electrodes is designed for low‐grade thermal energy harvesting and conversion. The low thermal conductivity of the porous cellulose aerogel enables limited heat transfer from the hot side to the cold side, and thermal energy management effectively reduces heat loss from the hot side to the environment. Thus, a sustainable temperature difference between the electrodes is maintained and a corresponding maximum power output of 6.94 mW m −2 is achieved under natural solar irradiation. The obtained thermal electrochemical cells are also integrated into an enclosed interfacial solar evaporation device to harvest the latent heat released from vapor condensation for electricity generation. In addition, the thermal electrochemical cells can be regenerated after 18 months of storage and show no performance degradation. This design thus offers a novel alternative strategy for practical low‐grade heat harvesting. image
Detoxification through phytochelatin synthesis in Oenothera odorata exposed to Cd solutions
Publisher: Elsevier BV
Date: 2012
Towards sustainable saline agriculture: Interfacial solar evaporation for simultaneous seawater desalination and saline soil remediation
Publisher: Elsevier BV
Date: 04-2022
DOI: 10.1016/J.WATRES.2022.118099
Abstract: Interfacial solar steam generation is an efficient way to produce freshwater from saline water. This technology was further harnessed here for simultaneous saline soil remediation and enhanced agricultural sustainability. An interfacial solar evaporation and planting system was designed that uses treated seawater for saline soil washing and agricultural irrigation. In outdoor experiments the evaporator realized high freshwater production (10.95 kg m
Kinetics and thermodynamics of sorption of nitroaromatic compounds to as-grown and oxidized multiwalled carbon nanotubes
Publisher: Elsevier BV
Date: 02-2009
DOI: 10.1016/J.JCIS.2008.10.023
Abstract: The sorption kinetics and thermodynamics of 1,3-dinitrobenzene (DNB), m-nitrotoluene (mNT), p-nitrophenol (pNP), and nitrobenzene (NB) on as-grown and nitric acid-oxidized multiwalled carbon nanotubes (MWCNTs) were investigated. The sorption kinetics was well described by a pseudo-second-order rate model, while both Langmuir and Freundlich models described the sorption isotherms well and the sorption thermodynamic parameters of equilibrium constant (K(0)), standard free energy (DeltaG), standard enthalpy (DeltaH), and standard entropy changes (DeltaS) were measured. The values of DeltaH and DeltaG suggested that the sorption of nitroaromatics (NACs) onto MWCNTs was exothermic and spontaneous. The structure, number, and position of nitro groups of NACs were the main factors affecting the sorption rate and capacity. Treatment of the MWCNTs with nitric acid increased both the surface area and the pore volume and introduced oxygen-containing functional groups to the MWCNTs, which depressed the sorption of NACs onto MWCNTs.
Fenton-oxidation of rifampicin via a green synthesized rGO@nFe/Pd nanocomposite
Publisher: Elsevier BV
Date: 2021
Assessment of Arsenic Contamination in Groundwater and Associated Human Health Risk
Publisher: MDPI AG
Date: 30-09-2022
DOI: 10.3390/SU141912460
Abstract: Drinking water contamination by arsenic (As) is of significant concern due to its potential cause of cancer and arsenicosis. In this study, out of the 200 s les (n = 200), the mean As concentrations ranged from below detection limit (BDL) to 3.30, 4.81, 4.42 and 3.85 µg L−1 in small residential, roadside, industrial and household areas, respectively. From 200 total s les, 9% of the groundwater s les showed As levels higher than the WHO safe guideline limit of 10 μg L−1. Human health risk was assessed using average daily intake (ADD), hazard quotient (HQ) and cancer risk (CR) values which were found to be greater than the recommended values by the United States Environmental Protection Agency (1.0 and 10−6) for health risk assessment. The CR were ranged from 0–5.7 × 10−1, 4.0 × 10−1, 2.0 × 10−1 and 1.0 × 10−1 in small residential areas for children, adolescents, males and females, respectively. In roadside areas, the values ranged from 0–2.8 × 10−1, 4.0 × 10−1, 2.0 × 10−1 and 2.8 × 10−1 for children, adolescents, males and females, while 0–5.9 × 10−1, 4.1 × 10−1, 2.1 × 10−1 and 1.6 × 10−1 in industrial areas and 0–8.0 × 10−1, 2.91 × 10−1, 2.6 × 10−1 and 3.9 × 10−1 were calculated in household sites. All the CR values were found to be exceeding the US-EPA limit (10−6) recommending that the people in the study area are more prone to carcinogenic risk. Overall, it was concluded that due to presence of As in drinking water, these areas tend to be at higher cancer risks. To provide safe drinking water for the people living in these As-affected areas, urgent remedial and management steps are required.
A photothermal reservoir for highly efficient solar steam generation without bulk water
Publisher: Elsevier BV
Date: 11-2019
Enhanced adsorption and reduction of Pb(II) and Zn(II) from mining wastewater by carbon@nano-zero-valent iron (C@nZVI) derived from biosynthesis
Publisher: Elsevier BV
Date: 04-2023
Changes in Availability of Plant Nutrients during Composting of Cow Manure with Poplar Leaf Litter
Publisher: Informa UK Limited
Date: 16-05-2017
Influence of sonochemical reactor diameter and liquid height on methyl orange degradation under 200 kHz indirect sonication
Publisher: Elsevier BV
Date: 09-2013
14N nuclear magnetic resonance relaxation of the nitrate ion and ion pairing in aqueous solution
Publisher: CSIRO Publishing
Date: 1995
DOI: 10.1071/CH9950207
Abstract: 14 N n.m.r. spin-lattice relaxation times of four metal nitrate salts were measured as a function of concentration in aqueous solution. The concentration dependence of T1 was attributed to the formation of ion pairs with increasing concentration in these solutions. The T1 data, allowing for viscosity corrections, were treated by a two-state model of 'free' and 'bound' nitrate ions and to both possibilities of slow and fast exchange between the two states. In the equilibrium expressions estimates of the relevant activity coefficients were included. The slow nitrate exchange mechanism was favoured and the values obtained for this particular mechanism compared well with those derived from alternative measurements.
Mechanisms of anaphylaxis in human low-affinity IgG receptor locus knock-in mice.
Publisher: Elsevier BV
Date: 04-2017
DOI: 10.1016/J.JACI.2016.06.058
Abstract: Anaphylaxis can proceed through distinct IgE- or IgG-dependent pathways, which have been investigated in various mouse models. We developed a novel mouse strain in which the human low-affinity IgG receptor locus, comprising both activating (hFcγRIIA, hFcγRIIIA, and hFcγRIIIB) and inhibitory (hFcγRIIB) hFcγR genes, has been inserted into the equivalent murine locus, corresponding to a locus swap. We sought to determine the capabilities of hFcγRs to induce systemic anaphylaxis and identify the cell types and mediators involved. hFcγR expression on mouse and human cells was compared to validate the model. Passive systemic anaphylaxis was induced by injection of heat-aggregated human intravenous immunoglobulin and active systemic anaphylaxis after immunization and challenge. Anaphylaxis severity was evaluated based on hypothermia and mortality. The contribution of receptors, mediators, or cell types was assessed based on receptor blockade or depletion. The human-to-mouse low-affinity FcγR locus swap engendered hFcγRIIA/IIB/IIIA/IIIB expression in mice comparable with that seen in human subjects. Knock-in mice were susceptible to passive and active anaphylaxis, accompanied by downregulation of both activating and inhibitory hFcγR expression on specific myeloid cells. The contribution of hFcγRIIA was predominant. Depletion of neutrophils protected against hypothermia and mortality. Basophils contributed to a lesser extent. Anaphylaxis was inhibited by platelet-activating factor receptor or histamine receptor 1 blockade. Low-affinity FcγR locus-switched mice represent an unprecedented model of cognate hFcγR expression. Importantly, IgG-related anaphylaxis proceeds within a native context of activating and inhibitory hFcγRs, indicating that, despite robust hFcγRIIB expression, activating signals can dominate to initiate a severe anaphylactic reaction.
Removal of As(III) using a microorganism sustained secrete laccase-straw oxidation system
Publisher: Elsevier BV
Date: 04-2023
The Potential of Combined Immunotherapy and Antiangiogenesis for the Synergistic Treatment of Advanced NSCLC
Publisher: Elsevier BV
Date: 02-2017
DOI: 10.1016/J.JTHO.2016.10.003
Abstract: Over the past few years, there have been considerable advances in the treatments available to patients with metastatic or locally advanced NSCLC, particularly those who have progressed during first-line treatment. Some of the treatment options available to patients are discussed here, with a focus on checkpoint inhibitor immunotherapies (nivolumab and pembrolizumab) and antiangiogenic agents (bevacizumab, ramucirumab, and nintedanib). It is hypothesized that combining immunotherapy with antiangiogenic treatment may have a synergistic effect and enhance the efficacy of both treatments. In this review, we explore the theory and potential of this novel treatment option for patients with advanced NSCLC. We discuss the growing body of evidence that proangiogenic factors can modulate the immune response (both by reducing T-cell infiltration into the tumor microenvironment and through systemic effects on immune-regulatory cell function), and we examine the preclinical evidence for combining these treatments. Potential challenges are also considered, and we review the preliminary evidence of clinical efficacy and safety with this novel combination in a variety of solid tumor types.
One step biosynthetic mechanism of hybrid reduced graphene oxide/Mn nanoparticles used for simultaneous removal antibiotics
Publisher: Elsevier BV
Date: 07-2023
Amelioration of saline–sodic soil with gypsum can increase yield and nitrogen use efficiency in rice–wheat cropping system
Publisher: Informa UK Limited
Date: 04-01-2017
A one step synthesis of hybrid Fe/Ni-rGO using green tea extract for the removal of mixed contaminants
Publisher: Elsevier BV
Date: 12-2021
Autoantibodies against type I IFNs in patients with life-threatening COVID-19
Publisher: American Association for the Advancement of Science (AAAS)
Date: 23-10-2020
Abstract: The immune system is complex and involves many genes, including those that encode cytokines known as interferons (IFNs). In iduals that lack specific IFNs can be more susceptible to infectious diseases. Furthermore, the autoantibody system d ens IFN response to prevent damage from pathogen-induced inflammation. Two studies now examine the likelihood that genetics affects the risk of severe coronavirus disease 2019 (COVID-19) through components of this system (see the Perspective by Beck and Aksentijevich). Q. Zhang et al. used a candidate gene approach and identified patients with severe COVID-19 who have mutations in genes involved in the regulation of type I and III IFN immunity. They found enrichment of these genes in patients and conclude that genetics may determine the clinical course of the infection. Bastard et al. identified in iduals with high titers of neutralizing autoantibodies against type I IFN-α2 and IFN-ω in about 10% of patients with severe COVID-19 pneumonia. These autoantibodies were not found either in infected people who were asymptomatic or had milder phenotype or in healthy in iduals. Together, these studies identify a means by which in iduals at highest risk of life-threatening COVID-19 can be identified. Science , this issue p. eabd4570 , p. eabd4585 see also p. 404
In vivo effector functions of high-affinity mouse IgG receptor FcγRI in disease and therapy models.
Publisher: Elsevier BV
Date: 06-2017
DOI: 10.1016/J.JAUT.2016.09.009
Abstract: Two activating mouse IgG receptors (FcγRs) have the ability to bind monomeric IgG, the high-affinity mouse FcγRI and FcγRIV. Despite high circulating levels of IgG, reports using FcγRI
Synergetic adsorption and Fenton-like oxidation for simultaneous removal of ofloxacin and enrofloxacin using green synthesized Fe NPs
Publisher: Elsevier BV
Date: 02-2020
A biomimetic interfacial solar evaporator for heavy metal soil remediation
Publisher: Elsevier BV
Date: 05-2022
Chemodynamics of heavy metals in long-term contaminated soils: Metal speciation in soil solution
Publisher: Elsevier BV
Date: 2009
DOI: 10.1016/S1001-0742(08)62451-1
Abstract: The concentration and speciation of heavy metals in soil solution isolated from long-term contaminated soils were investigated. The soil solution was extracted at 70% maximum water holding capacity (MWHC) after equilibration for 24 h. The free metal concentrations (Cd2+, CU2+, Pb2+, and Zn2+) in soil solution were determined using the Donnan membrane technique (DMT). Initially the DMT was validated using artificial solutions where the percentage of free metal ions were significantly correlated with the percentages predicted using MINTEQA2. However, there was a significant difference between the absolute free ion concentrations predicted by MINTEQA2 and the values determined by the DMT. This was due to the significant metal adsorption onto the cation exchange membrane used in the DMT with 20%, 28%, 44%, and 8% mass loss of the initial total concentration of Cd, Cu, Pb, and Zn in solution, respectively. This could result in a significant error in the determination of free metal ions when using DMT if no allowance for membrane cation adsorption was made. Relative to the total soluble metal concentrations the amounts of free Cd2+ (3%-52%) and Zn2+ (11%-72%) in soil solutions were generally higher than those of Cu2+ (0.2%-30%) and Pb2+ (0.6%-10%). Among the key soil solution properties, dissolved heavy metal concentrations were the most significant factor governing free metal ion concentrations. Soil solution pH showed only a weak relationship with free metal ion partitioning coefficients (K(p)) and dissolved organic carbon did not show any significant influence on K(p).
Influence of organic modifiers on the separation of carboxylic acids using co-EOF capillary electrophoresis
Publisher: Informa UK Limited
Date: 03-2003
Human arsenic exposure and risk assessment at the landscape level: A review
Publisher: Springer Science and Business Media LLC
Date: 27-01-2009
DOI: 10.1007/S10653-008-9240-3
Abstract: Groundwater contaminated with arsenic (As), when extensively used for irrigation, causes potentially long term detrimental effects to the landscape. Such contamination can also directly affect human health when irrigated crops are primarily used for human consumption. Therefore, a large number of humans are potentially at risk worldwide due to daily As exposure. Numerous previous studies have been severely limited by small s le sizes which are not reliably extrapolated to large populations or landscapes. Human As exposure and risk assessment are no longer simple assessments limited to a few food s les from a small area. The focus of more recent studies has been to perform risk assessment at the landscape level involving the use of biomarkers to identify and quantify appropriate health problems and large surveys of human dietary patterns, supported by analytical testing of food, to quantify exposure. This approach generates large amounts of data from a wide variety of sources and geographic information system (GIS) techniques have been used widely to integrate the various spatial, demographic, social, field, and laboratory measured datasets. With the current worldwide shift in emphasis from qualitative to quantitative risk assessment, it is likely that future research efforts will be directed towards the integration of GIS, statistics, chemistry, and other dynamic models within a common platform to quantify human health risk at the landscape level. In this paper we review the present and likely future trends of human As exposure and GIS application in risk assessment at the landscape level.
Effect of Root-Induced Chemical Changes on Dynamics and Plant Uptake of Heavy Metals in Rhizosphere Soils
Publisher: Elsevier BV
Date: 08-2010
Effect of soil amendments on molybdenum availability in mine affected agricultural soils
Publisher: Elsevier BV
Date: 2021
New nano-biomaterials for the removal of malachite green from aqueous solution via a response surface methodology
Publisher: Elsevier BV
Date: 12-2018
DOI: 10.1016/J.WATRES.2018.09.006
Abstract: The development of new biomaterials for the remove of organic contaminants from wastewater has attracted much attention over the few past years. One of the most cost-effective approaches is to produce new high value biomaterials from low value solid agricultural biowastes. In this work, sugarcane bagasse and agricultural waste rich in reducing sugars, acted as both a green bioreductant for graphene oxide (GO) and a sustainable supporter for the immobilization of Burkholderia cepacia. Therefore, this new biomaterial which contained both reduced graphene oxide (RGO) and Burkholderia cepacia, was cable of initial adsorption of malachite green (MG) and its subsequent biodegradation. After 60 h, immobilized Burkholderia cepacia degraded more MG (98.5%) than a cell cultured Burkholderia cepacia (87.7%) alone. Raman spectroscopy confirmed that GO was successfully reduced by bagasse and that consequently a composite (B-RGO) was prepared. SEM indicated that Burkholderia cepacia was well immobilized and kinetics studies showed that the adsorption of MG onto the developed composite fitted a pseudo-second order kinetics model (R
Reducing the impact of antibiotics in wastewaters: Increased removal of mitoxantrone from wastewater by biosynthesized manganese nanoparticles
Publisher: Elsevier BV
Date: 04-2021
Influence of corn residue biochar on water retention and penetration resistance in a calcareous sandy loam soil
Publisher: Elsevier BV
Date: 02-2021
Effect of indole-3-acetic acid on lead accumulation in maize (Zea mays L.) seedlings and the relevant antioxidant response
Publisher: Elsevier BV
Date: 12-2007
Enhanced oxidation and stabilization of arsenic in a soil-rice system by phytosynthesized iron oxide nanomaterials: mechanistic differences under flooding and draining conditions
Publisher: Elsevier BV
Date: 11-2022
DOI: 10.1016/J.ENVPOL.2022.120188
Abstract: Despite arsenic (As) bioavailability being highly correlated with water status and the presence of iron (Fe) minerals, limited information is currently available on how externally applied Fe nanomaterials in soil-rice systems affect As oxidation and stabilization during flooding and draining events. Herein, the stabilization of As in a paddy soil by a phytosynthesized iron oxide nanomaterials (PION) and the related mechanism was investigated using a combination of chemical extraction and functional microbe analysis in soil at both flooding (60 d) and draining (120 d) stages. The application of PION decreased both specifically bound and non-specifically bound As. The As content in rice root, stem, husk and grain was reduced by 78.5, 17.3, 8.4 and 34.4%, respectively, whereas As(III) and As(V) in root declined by 96.9 and 33.3% for the 1% PION treatment after 120 d. Furthermore, the 1% PION treatment decreased the ratio of As(III)/As(V) in the rhizosphere soil, root and stem. Although PION had no significant effect on the overall Shannon index, the distribution of some specific functional microbes changed dramatically. While no As(III) oxidation bacteria were found at 60 d in any treatments, PION treatment increased As(III) oxidation bacteria by 3-9 fold after 120 d cultivation. Structural equation model analysis revealed that the ratio of Fe(III)/Fe(II) affected As stabilization directly at the flooding stage, whereas nitrate reduction and As(III) oxidation microbial groups played a significant role in the stabilization of As at the draining stage. These results highlight that PION exhibits a robust ability to reduce As availability to rice, with chemical oxidation, reduction inhibition and adsorption dominating at the flooding stage, while microbial oxidation, adsorption and coprecipitation dominant during draining.
The immune factors driving DNA methylation variation in human blood
Publisher: Springer Science and Business Media LLC
Date: 06-10-2022
DOI: 10.1038/S41467-022-33511-6
Abstract: Epigenetic changes are required for normal development, yet the nature and respective contribution of factors that drive epigenetic variation in humans remain to be fully characterized. Here, we assessed how the blood DNA methylome of 884 adults is affected by DNA sequence variation, age, sex and 139 factors relating to life habits and immunity. Furthermore, we investigated whether these effects are mediated or not by changes in cellular composition, measured by deep immunophenotyping. We show that DNA methylation differs substantially between naïve and memory T cells, supporting the need for adjustment on these cell-types. By doing so, we find that latent cytomegalovirus infection drives DNA methylation variation and provide further support that the increased dispersion of DNA methylation with aging is due to epigenetic drift. Finally, our results indicate that cellular composition and DNA sequence variation are the strongest predictors of DNA methylation, highlighting critical factors for medical epigenomics studies.
Confirmation of lead aminocarboxylic complex formation using electrospray ionization mass spectrometry and speciation by anion-exchange chromatography coupled with ICP-MS
Publisher: Elsevier BV
Date: 09-2007
DOI: 10.1016/J.ACA.2007.08.012
Abstract: Inductively coupled plasma mass spectrometry (ICP-MS) and electrospray ionization mass spectrometry (ESI-MS) were used as complementary techniques to provide element and molecular information for aminocarboxylic lead species including [Pb(NTA)]1-, [Pb(HEDTA)]1-, [Pb(EDTA)]2- and [Pb(DTPA)]3-. ESI-MS was used to initially confirm the formation of lead aminocarboxylic complexes in solution and subsequently anion-change chromatography coupled with ICP-MS was used to speciate these complexes using a mobile phase containing 30 mM NH4H2PO4 at pH of 8.0. However, [Pb(NTA)]1- was not observed during chromatographic separation due to its poor stability. The species [Pb(HEDTA)]1-, [Pb(EDTA)]2- and [Pb(DTPA)]3- were separated within 15 min with reasonable resolution and detection limits ranging from 0.05 to 0.2 microg L(-1) with simple direct injection of s le. The proposed method was used to speciate aminocarboxylic lead complexes in soil solution.
Anode modification by biogenic gold nanoparticles for the improved performance of microbial fuel cells and microbial community shift
Publisher: Elsevier BV
Date: 12-2018
DOI: 10.1016/J.BIORTECH.2018.08.092
Abstract: In this study, carbon cloth anodes were modified using biogenic gold nanoparticles (BioAu) and nanohybrids of multi-walled carbon nanotubes blended with BioAu (BioAu/MWCNT) to improve the performance of microbial fuel cells (MFCs). The results demonstrated that BioAu modification significantly enhanced the electricity generation of MFCs. In particular, BioAu/MWCNT nanohybrids as the modifier displayed a better performance. The MFC with the BioAu/MWCNT electrode had the shortest start-up time (6.74 d) and highest power density (178.34 ± 4.79 mW/m
Ceritinib inALK-Rearranged Non–Small-Cell Lung Cancer
Publisher: Massachusetts Medical Society
Date: 27-03-2014
Removal of low Sb(V) concentrations from mining wastewater using zeolitic imidazolate framework-8
Publisher: Elsevier BV
Date: 06-2021
Same materials, bigger output: A reversibly transformable 2D–3D photothermal evaporator for highly efficient solar steam generation
Publisher: Elsevier BV
Date: 2021
Synthesis and characterization of Nanoscale Zero-Valent Iron (nZVI) as an adsorbent for the simultaneous removal of As(III) and As(V) from groundwater
Publisher: Elsevier BV
Date: 06-2022
A flexible photothermal cotton-CuS nanocage-agarose aerogel towards portable solar steam generation
Publisher: Elsevier BV
Date: 02-2019
Preparation of bionanomaterial based on green reduced graphene immobilized Ochrobactrum sp. FJ1: Optimization, characterization and its application
Publisher: Elsevier BV
Date: 04-2023
Isolation and identification of 17β-estradiol degrading bacteria and its degradation pathway
Publisher: Elsevier BV
Date: 02-2022
DOI: 10.1016/J.JHAZMAT.2021.127185
Abstract: The widespread presence of 17β-estradiol (E2) in the environment is an emerging problem because it poses a potential threat to human health and aquatic organisms. In this study, a strain of E2 degrading bacteria was isolated from activated sludge. 16s rRNA analysis combined with physiological and biochemical detection confirmed that the bacterium was Ochrobactrum sp. strain FJ1. At an initial E2 concentration of 15 mg L
Suitability of Indian mustard genotypes for phytoremediation of mercury-contaminated sites
Publisher: Elsevier BV
Date: 11-2021
Physicochemical characteristics of biochars can be beneficially manipulated using post-pyrolyzed particle size modification
Publisher: Elsevier BV
Date: 06-2020
Simultaneous Removal of Sb(Iii) and Sb(V) from Mining Wastewater by Reduced Graphene Oxide/Bimetallic Nanoparticles
Publisher: Elsevier BV
Date: 08-2021
DOI: 10.1016/J.SCITOTENV.2022.155704
Abstract: Antimony (Sb) contamination is a significant environmental issue in mining impacted areas, where the use of nanomaterials to remove such metalloid species has attracted much research attention. In this study, the simultaneous removal of Sb(III) and Sb(V) was investigated using a reduced graphene oxide/Fe/Ni (rGO-Fe/Ni NPs) composite. Compared to rGO alone the composite exhibited enhanced removal efficiency. For rGO-Fe/Ni NPs the maximum Sb(III) and Sb(V) adsorption capacities were 2.00 and 1.41 mg·g
Mechanism of As(V) removal by green synthesized iron nanoparticles
Publisher: Elsevier BV
Date: 11-2019
DOI: 10.1016/J.JHAZMAT.2019.120811
Abstract: The application of green synthesized iron nanoparticles (nFe) for the removal of arsenic (As) from contaminated sites has often been proposed as one of the most promising remediation methods. In this work, TEM analysis showed that As(V) was uniformly adsorbed on the surfaces of nFe, while FTIR analysis confirmed that adsorption was mainly via an FeOAs bond, and XPS analysis indicated that only As(V) was adsorbed. Hence, the removal mechanism proposed for As(V) is based on initially nFe reacting with As(V) to form a monodentate chelating ligand and subsequently a bidentate binuclear complex. The initially high surface area (51.14 m
Remediation of malachite green in wastewater by ZIF-8@Fe/Ni nanoparticles based on adsorption and reduction
Publisher: Elsevier BV
Date: 07-2021
Effects of green synthesized and commercial nZVI on crystal violet degradation by Burkholderia vietnamiensis C09V: Dose-dependent toxicity and biocompatibility
Publisher: Elsevier BV
Date: 09-2021
Platelets expressing IgG receptor FcγRIIA/CD32A determine the severity of experimental anaphylaxis
Publisher: American Association for the Advancement of Science (AAAS)
Date: 27-04-2018
DOI: 10.1126/SCIIMMUNOL.AAN5997
Abstract: Platelet-derived serotonin contributes to FcγRIIA/CD32A-induced IgG-dependent anaphylaxis.
Cerebrospinal fluid-derived circulating tumour DNA better represents the genomic alterations of brain tumours than plasma
Publisher: Springer Science and Business Media LLC
Date: 10-11-2015
DOI: 10.1038/NCOMMS9839
Abstract: Cell-free circulating tumour DNA (ctDNA) in plasma has been shown to be informative of the genomic alterations present in tumours and has been used to monitor tumour progression and response to treatments. However, patients with brain tumours do not present with or present with low amounts of ctDNA in plasma precluding the genomic characterization of brain cancer through plasma ctDNA. Here we show that ctDNA derived from central nervous system tumours is more abundantly present in the cerebrospinal fluid (CSF) than in plasma. Massively parallel sequencing of CSF ctDNA more comprehensively characterizes the genomic alterations of brain tumours than plasma, allowing the identification of actionable brain tumour somatic mutations. We show that CSF ctDNA levels longitudinally fluctuate in time and follow the changes in brain tumour burden providing biomarkers to monitor brain malignancies. Moreover, CSF ctDNA is shown to facilitate and complement the diagnosis of leptomeningeal carcinomatosis.
Fenton-like oxidation for the simultaneous removal of estrone and β-estradiol from wastewater using biosynthesized silver nanoparticles
Publisher: Elsevier BV
Date: 03-2022
Effect of biochar on reclaimed tidal land soil properties and maize (Zea mays L.) response
Publisher: Elsevier BV
Date: 2016
DOI: 10.1016/J.CHEMOSPHERE.2015.06.041
Abstract: Reclaimed tidal land soil (RTLS) often contains high levels of soluble salts and exchangeable Na that can adversely affect plant growth. The current study examined the effect of biochar on the physicochemical properties of RTLS and subsequently the influence on plant growth performance. Rice hull derived biochar (BC) was applied to RTLS at three different rates (1%, 2%, and 5% (w/w)) and maize (Zea mays L.) subsequently cultivated for 6weeks. While maize was cultivated, 0.1% NaCl solution was supplied from the bottom of the pots to simulate the natural RTLS conditions. Biochar induced changes in soil properties were evaluated by the water stable aggregate (WSA) percentage, exchangeable sodium percentage (ESP), soil organic carbon contents, cation exchange capacity, and exchangeable cations. Plant response was measured by growth rate, nutrient contents, and antioxidant enzyme activity of ascorbate peroxidase (APX) and glutathione reductase (GR). Application of rice hull derived biochar increased the soil organic carbon content and the percentage of WSA by 36-69%, while decreasing the ESP. The highest dry weight maize yield was observed from soil which received 5% BC (w/w), which was attributed to increased stability of water-stable aggregates and elevated levels of phosphate in BC incorporated soils. Moreover, increased potassium, sourced from the BC, induced mitigation of Na uptake by maize and consequently, reduced the impact of salt stress as evidenced by overall declines in the antioxidant activities of APX and GR.
A sustainable natural clam shell derived photocatalyst for the effective adsorption and photodegradation of organic dyes
Publisher: Springer Science and Business Media LLC
Date: 22-02-2022
DOI: 10.1038/S41598-022-06981-3
Abstract: In response to an increasing desire for modern industries to be both green and sustainable, there has been increasing research focus on the reutilization of natural waste materials to effectively remove and degrade toxic wastewater effluents. One interesting food industry waste product is clam shell. Here a new photocatalytic nanomaterial derived from marine clam shells was successfully prepared and characterized. Thereafter the material was applied for the removal of two target dyes from aqueous solution, where the effect of both catalyst dose and initial dye concentration on adsorption and photocatalysis was investigated. The maximum adsorption capacities of methylene blue (100 mg/L) and Congo red (500 mg/L) were 123.45 mg/g and 679.91 mg/g, respectively, where adsorption followed pseudo second order kinetics predominantly via a chemical adsorption process. The photodegradation removal efficiencies of the two dye solutions under visible light irradiation were 99.6% and 83.3% for MB and CR, respectively. The excellent degradation performance in a mixed dye solution, with strong degradation capability and low cost, demonstrated that the clam shell catalyst material was a good candidate for practical field remediation of dye contaminated wastewater.
Removal mechanism of Sb(V) by a hybrid ZIF-8@FeNPs and used for treatment of mining wastewater
Publisher: Elsevier BV
Date: 2022
Impact of synthesis conditions on Pb(II) removal efficiency from aqueous solution by green tea extract reduced graphene oxide
Publisher: Elsevier BV
Date: 03-2019
Metal distributions in seawater, sediment and marine benthic macroalgae from the South Australian coastline
Publisher: Springer Science and Business Media LLC
Date: 20-02-2014
Sorption and Desorption of Phenanthrene onto Iron, Copper, and Silicon Dioxide Nanoparticles
Publisher: American Chemical Society (ACS)
Date: 26-08-2008
DOI: 10.1021/LA801459S
Abstract: The sorption and desorption of phenanthrene by three engineered nanoparticles including nanosize zerovalent iron (NZVI), copper (NZVC), and silicon dioxide (NSiO2) were investigated. The sorption of phenanthrene onto NSiO2 was linear and reversible due to the hydrophilic properties of NSiO2. In comparison, sorption of phenanthrene onto NZVI and NZVC was nonlinear and irreversible, which was potentially due to the existence of significantly heterogeneous surface energy distribution patterns detected by a standard molecular probe technique. Naphthalene exerted significant competitive sorption with phenanthrene for NZVI and NZVC, and the isotherm of phenanthrene changed from being significantly nonlinear to nearly linear when naphthalene was simultaneously absorbed. A surface adsorption mechanism was proposed to explain the observed sorption and competition of phenanthrene on both NZVI and NZVC. In contrast, no competition was observed for sorption onto NSiO2. The sorption of phenanthrene on all three nanoparticles significantly decreased with increasing pH. The sorption irreversibility of phenanthrene on NZVI and NZVC were significantly enhanced with decreasing pH. A pH-dependent hydrophobic effect and dipole interactions between the charged surface (electron acceptors) and phenanthrene with electron-rich pi systems (electron donors) were proposed to explain the observed pH-dependent sorption.
Recovery and removal of rare earth elements from mine wastewater using synthesized bio-nanoparticles derived from Bacillus cereus
Publisher: Elsevier BV
Date: 03-2023
Mobility during the pandemic: how did our movements shape the course of COVID-19?
Publisher: Oxford University Press (OUP)
Date: 04-2022
DOI: 10.1093/JTM/TAAC055
Abstract: In this manuscript, we critically assess the evidence around various methods of reducing mobility, and how these have impacted the course of the coronavirus disease 2019 (COVID-19) pandemic. We further highlight the difficulty in assessing the effectiveness of such measures before giving directions for future research.
Adsorption and fenton-like oxidation of ofloxacin in wastewater using hybrid MOF bimetallic Fe/Ni nanoparticles
Publisher: Elsevier BV
Date: 11-2022
DOI: 10.1016/J.CHEMOSPHERE.2022.135936
Abstract: Since ofloxacin (OFX) is one of many common antibiotics, which effluxes into aquatic environment in relatively high concentration, it has become of significant environmental concern due to the potential for increased antibiotic resistance. In this study, an innovative functional Fe/Ni@ZIF-8 composite was successfully used for the Fenton-like oxidation of OFX, with a OFX removal efficiency >98% under optimal conditions. FTIR analysis confirmed that OFX removal occurred via adsorption to Fe/Ni@ZIF-8 by a combination of π-π bond intercalation and electrostatic interaction, while XPS revealed that the Fe/Ni NPs in Fe/Ni@ZIF-8 were also involved in oxidation. Furthermore, LC-MS analysis identified the presence of several OFX degradation products post exposure, which indicted that Fe/Ni NPs in Fe/Ni@ZIF-8 reacted with H
Enhanced aqueous phase arsenic removal by a biochar based iron nanocomposite
Publisher: Elsevier BV
Date: 08-2020
The use of dental CT for age profiling
Publisher: Elsevier BV
Date: 06-2019
Nutrients losses via runoff from soils amended with cow manure composted with leaf litter
Publisher: Springer Science and Business Media LLC
Date: 2018
Speciation of Zn-aminopolycarboxylic complexes by electrospray ionization mass spectrometry and ion chromatography with inductively coupled plasma mass spectrometry
Publisher: Wiley
Date: 06-01-2009
DOI: 10.1002/RCM.3897
Abstract: The speciation of Zn-aminopolycarboxylic complexes was investigated using both electrospray ionization mass spectrometry (ESI-MS) and ion chromatography (IC) with inductively coupled plasma mass spectrometry (ICP-MS). The resulting ESI mass spectra indicated that [Zn(HEDTA)](1-), [Zn(NTA)](1-), [Zn(EDTA)](2-) and [Zn(DTPA)](3-) were all simultaneously detected in solution [Zn(NTA)](1-) exhibited the weakest intensity of all these Zn-aminopolycarboxylic complexes. IC/ICP-MS was also successfully used to separate Zn complexes by anion-exchange chromatography using a mobile phase containing 30 mM (NH(4))(2)HPO(4) at pH 7.5 giving reasonable resolution within 15 min. A weak peak attributable to the poor stability [Zn(NTA)](1-) ion was also observed using IC/ICP-MS. With the exception of [Zn(NTA)](1-), detection limits ranging from 0.5 to 1.0 microg/L were obtained and the proposed method was used for the determination of Zn aminopolycarboxylic complexes in soil solution.
Valorization of fruit waste-based biochar for arsenic removal in soils
Publisher: Elsevier BV
Date: 10-2022
DOI: 10.1016/J.ENVRES.2022.113710
Abstract: Fruit waste disposal is a serious global problem with only 20% of such waste being routinely treated prior to discharge. Two of the most polluting fruit wastes are orange peel and walnut shell and new methods are urgently required to valorize such waste. In the present study, they where valorized via conversion into biochars at 500 °C (OPB500 for orange peel-based biochar produced at 500 °C and WaSB500 for walnut shell-based biochar produced at 500 °C), and evaluated for arsenic adsorption. A pore-rich surface morphology was observed with a low H/C ratio indicating high stability. Spectroscopic studies revealed the presence of minerals and surface functional groups (amide, carbonyl, carboxyl, and hydroxyl) suggesting high potential for arsenic immobilization. Adsorption studies revealed an arsenic removal efficiency of 88.8 ± 0.04% for WaSB500 exposed to initial arsenic concentration of 8 ppm for 5% biochar dose at 25 °C and 30 min contact time. In comparison, OPB500 showed slightly lower removal efficiency of 80.7 ± 0.1% (10 ppm initial concentration, 5% dose, 25 °C, 90 min contact time). Peak shifts in XRD and FTIR spectra together with isotherm, kinetic, and thermodynamic studies suggested arsenic sequestration was achieved via a combination of chemisorption, physisorption, ion exchange, and diffusion. The present investigation suggests valorization of fruit waste into thermo-stable biochars for sustainable arsenic remediation in dynamic soil/water systems and establishes biochar's importance for waste biomass minimization and metal (loid) removal from fertile soils.
Impact of genetically modified crops on rhizosphere microorganisms and processes: A review focusing on Bt cotton
Publisher: Elsevier BV
Date: 04-2020
Correction to: A cobalt oxide@polydopamine-reduced graphene oxide-based 3D photothermal evaporator for highly efficient solar steam generation (Tungsten, (2020), 2, 4, (423-432), 10.1007/s42864-020-00062-6)
Publisher: Springer Science and Business Media LLC
Date: 30-11-2022
The stabilizing mechanism of cadmium in contaminated soil using green synthesized iron oxide nanoparticles under long-term incubation
Publisher: Elsevier BV
Date: 11-2019
DOI: 10.1016/J.JHAZMAT.2019.120832
Abstract: Despite numerous studies having been conducted on the stabilization of heavy metal contaminated soil, our understanding of the mechanisms involved remains limited. Here green synthesized iron oxide nanoparticles (GION) were applied to stabilize cadmium (Cd) in a contaminated soil. GION not only stabilized soil Cd, but also improved soil properties within one year of incubation. After GION application both the exchangeable and carbonate bound Cd fractions decreased by 14.2-83.5% and 18.3-85.8% respectively, and most of the Cd was translocated to the residual Cd fraction. The application of GION also strongly altered soil bacterial communities. In GION treatments, the abundance of Gemmatimonadetes, Proteobacteria, and Saccharibacteria increased which led to a shift in the dominant bacterial genera from Bacillus to Candidatus koribacter. The variation in bacteria confirmed the restoration of the contaminated soil. The most abundant bacterial genus and species found in GION treatments were related to (i) plant derived biomass decomposition (ii) ammoxidation and denitrification and (iii) Fe oxidation. GION application may enhance the formation of larger soil aggregates with anaerobic centers and coprecipitation coupled Fe (II) oxidization, ammoxidation and nitrite reduction followed by Fe mineral ripening may be involved in Cd stabilization. The predominant stabilization mechanism was thus coprecipitation-ripening-stabilization.
An integrated approach to safer plant production on metal contaminated soils using species selection and chemical immobilization
Publisher: Elsevier BV
Date: 09-2016
DOI: 10.1016/J.ECOENV.2016.05.008
Abstract: In order to examine the species specific accumulation of heavy metals in medicinal crops, seven different common medicinal plants were cultivated on a Cd (55mgkg(-1)) and Pb (1283mgkg(-1)) contaminated soil. Subsequently, the effect of various immobilizing agents, applied in isolation and in combination, on Cd and Pb uptake by two medicinal plant species was examined. Cadmium and Pb root concentrations in medicinal plants grown in the control soil varied between 0.5 and 2.6mgkg(-1) for Cd and 3.2 and 36.4mgkg(-1) for Pb. The highest accumulation occurred in Osterici Radix (Ostericum koreanum) and Ginger (Zingiber officinale) and the lowest in Yam (Dioscorea batatas). Application of immobilizing agents significantly reduced both Cd and Pb concentrations in all medicinal plants examined, where the most effective single immobilizing agent was lime fertilizer (LF). Application of combination treatments involving sorption agents such as compost together with lime further decreased Cd and Pb concentrations from 1.3 and 25.3mgkg(-1) to 0.2 and 4.3mgkg(-1), respectively, which was well below the corresponding WHO guidelines. Thus appropriate immobilizing agents in combination with species selection can be practically used for safer medicinal plant production.
Simultaneous removal of arsenite and arsenate from mining wastewater using ZIF-8 embedded with iron nanoparticles
Publisher: Elsevier BV
Date: 10-2022
DOI: 10.1016/J.CHEMOSPHERE.2022.135269
Abstract: Arsenic contamination is an increasing global environmental problem, especially in mining industry wastewater where both arsenite (As(III)) and arsenate (As(V)) have been routinely detected. In this paper, a novel porous metal-organic framework material (ZIF-8) was composited with iron nanoparticles (FeNPs) to form a functional material (ZIF-8@FeNPs) for the simultaneous removal of As(III)/(V) from wastewater. The material effectively removed both As(III) and As(V) with removal efficiencies of 99.9 and 71.2%, respectively. Advanced characterization techniques including X-ray photoelectron spectroscopy (XPS) and Fourier infrared (FTIR) indicated that removal of As(III) and As(V) involved complex formation. Adsorption kinetics followed a pseudo-second order kinetics indicating adsorption involved chemisorption. After four cycles of reuse the he removal rate of As species was still relatively high at > 60% When ZIF-8@FeNPs were used to remove As from real wastewater from acid mines the removal efficiency was 94.27%. Finally, a As(III) and As(V) removal mechanism was proposed.
Immobilization of cadmium in soil-plant system through soil and foliar applied silicon
Publisher: Informa UK Limited
Date: 07-01-2022
DOI: 10.1080/15226514.2021.2024133
Abstract: We conducted a pot experiment to evaluate the potential for soil- and foliar-applied silicon (Si), alone and in combination, to a Cd-contaminated soil in order to evaluate the effects on such amendments on the Cd translocation from soil to wheat root, shoot and grains. Five treatments were used, T1) control with no external factor added, T2 received only Cd, while T3-T5 treatments received Cd in combination with soil, foliar and soil plus foliar applied Si. Except control (T1), soil was contaminated with Cd at 10 mg kg
Evaluation of immobilizing agents as soil quality conditioners in addition to their metal(loid) immobilizing effect
Publisher: Elsevier BV
Date: 04-2022
Cadmium adsorption by willow root: the role of cell walls and their subfractions
Publisher: Springer Science and Business Media LLC
Date: 02-03-2013
DOI: 10.1007/S11356-013-1506-3
Abstract: Plant cell walls may play an important role in the uptake and accumulation of heavy metals. This study was undertaken to obtain a better understanding of the role of the root cell walls (RCW) and their subfractions on adsorption of cadmium (Cd) in a promising woody phytoremediation species, Salix jiangsuensis J172. In order to examine how Cd binding was affected by pectin and hemicellulose, RCW were isolated and sequentially fractioned by removing pectin (RCW1), partial removal of hemicellulose (RCW2), and complete removal of hemicellulose (RCW3). The RCW and fractions were characterized by Fourier transform infrared spectroscopy, which suggested decomposition of hemicellulose and a decline in nitrogen content following cell wall isolation and fractionation. The adsorption affinity of Cd increased gradually following the sequential extraction of root cells, suggesting that hemicellulose negatively impacted Cd adsorption, while pectin and cellulose enhanced Cd adsorption. Cd adsorption dynamics and isotherms could be best described by the pseudo-second-order (R>0.99) and Freundlich (R>0.97) models, respectively. Thermodynamic properties (∆G, ∆H, and ∆S), determined using the van't Hoff equation, indicated that while Cd adsorption was endothermic, and spontaneous for RCW2 and RCW3, adsorption was not spontaneous for the root, RCW, and RCW1. The results provide evidence for the importance of the root cell walls in the adsorption of Cd by willow roots.
Biomagnification of potentially toxic elements in animals consuming fodder irrigated with sewage water
Publisher: Springer Science and Business Media LLC
Date: 07-02-2022
DOI: 10.1007/S10653-022-01211-1
Abstract: Globally, sewage water is considered a cheap and effective alternative source of irrigation and nutrient supplement. For ex le, in Faisalabad, Pakistan untreated sewage water loaded with potentially toxic elements (PTEs) is being routinely used to grow fodder crops in the peri-urban areas, where PTEs accumulate at different trophic levels and contaminate the food chain. Trophic transfer, bioaccumulation, and biomagnification of hazardous metals in food chains had toxic implications for human health. Currently, the major concern is associated with the consumption of PTEs contaminated fodder by animals and the subsequent translocation into humans via consumption of milk and meat from these animals. This study thus analyzed the concentration of Cd, Cu, Pb and Zn in sewage water, sewage irrigated soil, fodder is grown on such soils and the milk of cows and buffalos to calculate the transfer through water and fodder to animal milk. Overall, concentrations and bioaccumulation factors of Cd and Cu in buffalo milk were higher than the cow milk, whereas it was inverse for the concentration of Zn. Non-significant difference in the bioaccumulation factor for Pb in both buffalo and cow milk was observed. Calculation of the estimated daily intake indicated that there was no health risk associated with the consumption of tested milk s les. However, given the widespread exposure of infants to milk, continuous monitoring of milk quality is recommended to preclude a child's exposure to elevated levels of PTEs.
Simultaneous removal of mixed contaminants, copper and norfloxacin, from aqueous solution by ZIF-8
Publisher: Elsevier BV
Date: 04-2019
Spatial distribution of Pb in urban soil from Port Pirie, South Australia
Publisher: Elsevier BV
Date: 10-2015
Fenton-like oxidation mechanism for simultaneous removal of estriol and ethinyl estradiol by green synthesized Mn3O4 NPs
Publisher: Elsevier BV
Date: 11-2022
Comparison of Prediction Models for Lynch Syndrome Among Individuals With Colorectal Cancer
Publisher: Oxford University Press (OUP)
Date: 18-11-2015
DOI: 10.1093/JNCI/DJV308
Neutrophil myeloperoxidase diminishes the toxic effects and mortality induced by lipopolysaccharide
Publisher: Rockefeller University Press
Date: 06-04-2017
DOI: 10.1084/JEM.20161238
Abstract: Neutrophils have crucial antimicrobial functions but are also thought to contribute to tissue injury upon exposure to bacterial products, such as lipopolysaccharide (LPS). To study the role of neutrophils in LPS-induced endotoxemia, we developed a new mouse model, PMNDTR mice, in which injection of diphtheria toxin induces selective neutrophil ablation. Using this model, we found, surprisingly, that neutrophils serve to protect the host from LPS-induced lethal inflammation. This protective role was observed in conventional and germ-free animal facilities, indicating that it does not depend on a particular microbiological environment. Blockade or genetic deletion of myeloperoxidase (MPO), a key neutrophil enzyme, significantly increased mortality after LPS challenge, and adoptive transfer experiments confirmed that neutrophil-derived MPO contributes importantly to protection from endotoxemia. Our findings imply that, in addition to their well-established antimicrobial properties, neutrophils can contribute to optimal host protection by limiting the extent of endotoxin-induced inflammation in an MPO-dependent manner.
Early IFNβ secretion determines variable downstream IL-12p70 responses upon TLR4 activation
Publisher: Elsevier BV
Date: 06-2022
Enhanced removal of oxytetracycline from wastewater using bimetallic Fe/Ni nanoparticles combined with ZIF-8 nanocomposites
Publisher: Elsevier BV
Date: 09-2022
DOI: 10.1016/J.JENVMAN.2022.115526
Abstract: The integration of metal-organic frameworks with other functional materials has recently emerged as a promising approach for creating innovative materials for environmental remediation. Here, a nano-sized iron/nickel (Fe/Ni) functionalized zeolitic imidazolate framework-8 (ZIF-8-Fe/Ni) was fabricated for oxytetracycline (OTC) removal from wastewater. Cyclic voltammetry and erometric I-t measurements indicated that OTC was degraded by ZIF-8-Fe/Ni. X-ray diffraction spectroscopy (XRD), transmission electron microscopy mapping (TEM-mapping) and X-ray photoelectron spectroscopy (XPS) indicated that Fe/Ni was evenly dispersed throughout ZIF-8 and partially oxidized after reaction with OTC. OTC adsorption isotherms and kinetics best fitted the Langmuir isotherm (R
Influence of Indian mustard (Brassica juncea) on rhizosphere soil solution chemistry in long-term contaminated soils: A rhizobox study
Publisher: Elsevier BV
Date: 2010
DOI: 10.1016/S1001-0742(09)60080-2
Abstract: This study investigated the influence of Indian mustard (Brassica juncea) root exudation on soil solution properties (pH, dissolved organic carbon (DOC), metal solubility) in the rhizosphere using a rhizobox. Measurement was conducted following the cultivation of Indian mustard in the rhizobox filled four different types of heavy metal contaminated soils (two alkaline soils and two acidic soils). The growth of Indian mustard resulted in a significant increase (by 0.6 pH units) in rhizosphere soil solution pH of acidic soils and only a slight increase (< 0.1 pH units) in alkaline soils. Furthermore, the DOC concentration increased by 17-156 mg/L in the rhizosphere regardless of soil type and the extent of contamination, demonstrating the exudation of DOC from root. Ion chromatographic determination showed a marked increase in the total dissolved organic acids (OAs) in rhizosphere. While root exudates were observed in all soils, the amount of DOC and OAs in soil solution varied considerably amongst different soils, resulting in significant changes to soil solution metals in the rhizosphere. For ex le, the soil solution Cd, Cu, Pb, and Zn concentrations increased in the rhizosphere of alkaline soils compared to bulk soil following plant cultivation. In contrast, the soluble concentrations of Cd, Pb, and Zn in acidic soils decreased in rhizosphere soil when compared to bulk soils. Besides the influence of pH and DOC on metal solubility, the increase of heavy metal concentration having high stability constant such as Cu and Pb resulted in a release of Cd and Zn from solid phase to liquid phase.
Sorption of Anionic Metsulfuron-Methyl and Cationic Difenzoquat on Peat and Soil As Affected by Copper
Publisher: American Chemical Society (ACS)
Date: 15-08-2008
DOI: 10.1021/ES800807M
Abstract: The effect of cationic copper (Cu2+) on the sorption of anionic metsulfuron-methyl (Me) and cationic difenzoquat (DZ) to peat and soil was studied using a batch equilibration method. The results showed that Cu2+ increased the sorption of Me but diminished the sorption of DZ. The adsorption of Cu2+ on the surface of peat and soil neutralizes the negative charge, making the zeta potential (zeta) of peat and soil less negative, consequently decreasing the repulsion between the surface of peat or soil and Me and increasing the sorption of Me. Cu2+ may additionally form Cu-Me complexes in aqueous solution, which was preferentially sorbed to peat and soil over the anionic Me. In contrast, the decreased negative surface charge of soil and peat does not favor the sorption of cationic DZ. Fourier transform infrared showed that DZ may be sorbed through interaction with -OH or -COOH groups of peat and soil and that surface complexes of Cu2+ may form through these groups. A competitive sorption between Cu2t and DZ for the same sorption sites is indicated, leading to mutual sorption inhibition of both cations.
Different modelling approaches for predicting titanium dioxide nanoparticles mobility in intact soil media
Publisher: Elsevier BV
Date: 05-2019
DOI: 10.1016/J.SCITOTENV.2019.01.345
Abstract: Understanding the transport behaviour of new and emerging materials such as engineered nanoparticles (ENPs) is vital for the accurate assessment of their functionality and fate in environmental systems. Predicting ENP mobility in soil systems based on common attributes of either soil or ENPs is of significant interest as an alternative to conducting laborious and time consuming column experiments. Thus this study investigates the importance of different soil properties and experimental conditions on titanium dioxide nanoparticles (nTiO
Diffusion-weighted Imaging as a Treatment Response Biomarker for Evaluating Bone Metastases in Prostate Cancer: A Pilot Study
Publisher: Radiological Society of North America (RSNA)
Date: 04-2017
Evaporation above a bulk water surface using an oil Lamp inspired highly efficient solar-steam generation strategy
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8TA03280G
Abstract: Inspired by a kerosene oil l , a highly efficient solar-evaporation system with the evaporation surface located above the bulk water surface is realized.
Environmental and Economic Benefits of Saline-Sodic Soil Reclamation Using Low-quality Water and Soil Amendments in Conjunction with a Rice-Wheat Cropping System
Publisher: Wiley
Date: 04-03-2009
One-step green synthesis of hybrid Fe-Mn nanoparticles: Methodology, characterization and mechanism
Publisher: Elsevier BV
Date: 08-2022
Application of Metal Oxide Nanomaterials in Agriculture: Benefit or Bane?
Publisher: Springer International Publishing
Date: 2021
Antibacterial activity of reduced graphene oxide prepared by microbe
Publisher: Elsevier BV
Date: 06-2023
Influence of reactor shapes on residence time distribution and methyl orange degradation efficiency in a continuous process under indirect 200 KHZ sonication
Publisher: American Chemical Society (ACS)
Date: 13-12-2013
DOI: 10.1021/IE402579A
Gene Copy Number Estimation from Targeted Next-Generation Sequencing of Prostate Cancer Biopsies: Analytic Validation and Clinical Qualification
Publisher: American Association for Cancer Research (AACR)
Date: 12-10-2017
DOI: 10.1158/1078-0432.CCR-17-0972
Abstract: Purpose: Precise detection of copy number aberrations (CNA) from tumor biopsies is critically important to the treatment of metastatic prostate cancer. The use of targeted panel next-generation sequencing (NGS) is inexpensive, high throughput, and easily feasible, allowing single-nucleotide variant calls, but CNA estimation from this remains challenging. Experimental Design: We evaluated CNVkit for CNA identification from licon-based targeted NGS in a cohort of 110 fresh castration-resistant prostate cancer biopsies and used capture-based whole-exome sequencing (WES), array comparative genomic hybridization (aCGH), and FISH to explore the viability of this approach. Results: We showed that this method produced highly reproducible CNA results (r = 0.92), with the use of pooled germline DNA as a coverage reference supporting precise CNA estimation. CNA estimates from targeted NGS were comparable with WES (r = 0.86) and aCGH (r = 0.7) for key selected genes (BRCA2, MYC, PIK3CA, PTEN, and RB1), CNA estimation correlated well with WES (r = 0.91) and aCGH (r = 0.84) results. The frequency of CNAs in our population was comparable with that previously described (i.e., deep deletions: BRCA2 4.5% RB1 8.2% PTEN 15.5% lification: AR 45.5% gain: MYC 31.8%). We also showed, utilizing FISH, that CNA estimation can be impacted by intratumor heterogeneity and demonstrated that tumor microdissection allows NGS to provide more precise CNA estimates. Conclusions: Targeted NGS and CNVkit-based analyses provide a robust, precise, high-throughput, and cost-effective method for CNA estimation for the delivery of more precise patient care. Clin Cancer Res 23(20) 6070–7. ©2017 AACR.
A new biocomposite based on microbial autocrine laccase-rice straw: preparation, characterization and application
Publisher: Elsevier BV
Date: 12-2022
Cerium and titanium oxide nanoparticles increase algal growth and nutrient accumulation in rice paddy environments
Publisher: Springer International Publishing
Date: 2021
Distinguishable Transport Behavior of Zinc Oxide Nanoparticles in Silica Sand and Soil Columns
Publisher: Elsevier BV
Date: 02-2015
DOI: 10.1016/J.SCITOTENV.2014.09.095
Abstract: As part of ongoing risk assessments of ZnO nanoparticles (nZnO) in the natural environment, transport behaviors of nZnO in soil need investigation. This work comparatively studied the transport and retention behavior of nZnO in silica sand versus soil, where the effect of input concentration (C₀=34~430 mgL(-1)) and ionic strength (IS=1~50 mM) were investigated. In silica sand, nZnO were highly mobile, especially at low C₀ and the efflux of nZnO generally decreased with increasing C₀ at all tested IS. Conversely, at low C₀, n ZnO were almost entirely immobile in soil and the efflux of nZnO increased with C₀ at all tested IS. In both media, the retention profiles (RPs) were generally hyper-exponentially shaped suggesting nZnO easily deposited near the column inlet. As indicated by DLVO calculations, previously deposited nZnO on the silica sand surface acted as new deposition sites due to the lower energy barrier (Φmax) between nZnO-nZnO than between nZnO-silica sand. However, previously deposited nZnO in soil could enhance Φmax between the soil surface and nZnO which resulted in unfavorable sites for nZnO deposition. The two-site kinetic attachment model provided good descriptions for the breakthrough curves of nZnO. Detachment was more significant than attachment in silica sand (k₁d>k₁a), whereas soil surface attachment of nZnO were strong and irreversible (k₁a>k₁d). The straining interaction parameter (k₂str) increased with increasing C0 in silica sand, but decreased with C0 in soil. Such differences were mainly responsible for the various transport behaviors of nZnO in silica sand and soil.
Erratum: Occurrence and environmental fate of veterinary antibiotics in the terrestrial environment (Water, Air, and Soil Pollution (2011) 214 (163-174) DOI: 10.1007/s11270-010-0412-2)
Publisher: Springer Science and Business Media LLC
Date: 20-09-2012
Cyclodextrin modified green synthesized graphene oxide@iron nanoparticle composites for enhanced removal of oxytetracycline
Publisher: Elsevier BV
Date: 02-2022
DOI: 10.1016/J.JCIS.2021.11.049
Abstract: The presence of residual antibiotics will lead to potential environmental risks. Here cyclodextrins (CDs) were successfully used to modify graphene-based iron nanoparticles (GO@Fe NPs) to enhance the absorption of oxytetracycline hydrochloride (OTC). The removal of OTC decreased in the order: γCD-GO@Fe NPs > βCD-GO@Fe NPs > αCD-GO@Fe NPs > GO@Fe NPs, with better performance than that of bare GO and Fe NPs. Characterization techniques were applied to better understand how CDs impact the structure of GO@Fe NPs and improve removal performance. Raman and X-ray diffraction analysis showed that GO acted as a carrier to support Fe NPs within the grafted cyclodextrin, where GO also participated in the removal process. Cyclodextrin modified GO@Fe NPs had relatively small particle sizes (15 nm), with a high surface area (61.7 m
Removal of As(V) by iron-based nanoparticles synthesized via the complexation of biomolecules in green tea extracts and an iron salt
Publisher: Elsevier BV
Date: 04-2021
Effect of partitioning on sonochemical reactor performance under 200 kHz indirect sonication
Publisher: American Chemical Society (ACS)
Date: 20-05-2014
DOI: 10.1021/IE500537E
Arsenic speciation and toxicity in biological systems
Publisher: Springer New York
Date: 2005
Abstract: Although it is now commonly accepted that toxicity and bioavailability varies with As species, extensive research has been carried out on biological and environmental s les to assess toxicity and risk associated with As exposure based on total concentrations that may be in error. The health investigation guideline for the Australian environmental protection measure is 100 mg/kg (As(tot)), which would cause potential risk to human health if all the As present in a s le were bioavailable (ANZECC 1992). Similarly, the MPC for As in food is 1 mg/ kg (fresh weight), but this concentration may include contributions from As(III), AsV, and all organic species. Thus, a food substance, such as seafood, could have a high total concentration exceeding the guidelines, but most of the As would be in forms that are nontoxic to humans i.e., the bioavailability is low, and the food would therefore be perfectly safe to eat. On the other hand, a food that has high bioavailability of As consequently is more toxic. Overall, it appears that contamination of water by As is probably more harmful to humans than As in food grains or vegetables, because As bioavailability in water is generally higher than its bioavailability in food. Nevertheless, As in food crops could make significant contribution toward total daily intake. Therefore, failure to consider the contribution of As species on their bioavailability could introduce a substantial bias into the estimation of risks associated with exposure as well as evaluation of As toxicity. In conclusion, As must be regarded as an important environmental toxicant because of its acute and chronic toxic properties and extensive presence in the environment. Much remains to be learned about its toxicology and biochemistry for better understanding of this important contaminant.
A cobalt oxide@polydopamine-reduced graphene oxide-based 3D photothermal evaporator for highly efficient solar steam generation
Publisher: Springer Science and Business Media LLC
Date: 04-11-2020
Low end-tidal CO2 as a real-time severity marker of intra-anaesthetic acute hypersensitivity reactions
Publisher: Elsevier BV
Date: 11-2017
DOI: 10.1093/BJA/AEX260
Abstract: Prompt diagnosis of intra-anaesthetic acute hypersensitivity reactions (AHR) is challenging because of the possible absence and/or difficulty in detecting the usual clinical signs and because of the higher prevalence of alternative diagnoses. Delayed epinephrine administration during AHR, because of incorrect/delayed diagnosis, can be associated with poor prognosis. Low end-tidal CO2 (etCO2) is known to be linked to low cardiac output. Yet, its clinical utility during suspected intra-anaesthetic AHR is not well documented. Clinical data from the 86 patients of the Neutrophil Activation in Systemic Anaphylaxis (NASA) multicentre study were analysed. Consenting patients with clinical signs consistent with intra-anaesthetic AHR to a neuromuscular blocking agent were included. Severe AHR was defined as a Grade 3-4 of the Ring and Messmer classification. Causes of AHR were explored following recommended guidelines. Among the 86 patients, 50% had severe AHR and 69% had a confirmed/suspected IgE-mediated event. Occurrence and minimum values of arterial hypotension, hypocapnia and hypoxaemia increased significantly with the severity of AHR. Low etCO2 was the only factor able to distinguish mild [median 3.5 (3.2 .9) kPa] from severe AHR [median 2.4 (1.6 .0) kPa], without overlap in inter-quartile range values, with an area under the receiver operator characteristic curve of 0.92 [95% confidence interval: 0.79-1.00]. Among the 41% of patients who received epinephrine, only half received it as first-line therapy despite international guidelines. An etCO2 value below 2.6 kPa (20 mm Hg) could be useful for prompt diagnosis of severe intra-anaesthetic AHR, and could facilitate early treatment with titrated doses of epinephrine. NCT01637220.
Reversing heat conduction loss: Extracting energy from bulk water to enhance solar steam generation
Publisher: Elsevier BV
Date: 12-2020
Speciation of metal-EDTA complexes by flow injection analysis with electrospray ionization mass spectrometry and ion chromatography with inductively coupled plasma mass spectrometry
Publisher: Wiley
Date: 12-2008
Abstract: Flow injection analysis (FIA) with ESI-MS and ion chromatography (IC) with inductively coupled plasma-MS (ICP-MS) as the complementary technique have been explored for the determination of metal ions as their metal-EDTA complexes. ESI-MS enabled the identification of metal-EDTA complexes such as [Mn(EDTA)](2-), [Co(EDTA)](2-), [Ni(EDTA)](2-), [Cu(EDTA)](2-), [Zn(EDTA)](2-), [Pb(EDTA)](2-), and [Fe(EDTA)](1-) and their MS spectral showed that these metal-EDTA complexes were present in solution. Based on the ESI-MS, ion chromatographic separation and ICP-MS detection of these complexes are possible because IC-ICP-MS requires stable metal-EDTA complex during the chromatographic separation. The separation of these metal-EDTA complexes was achieved on an anion-exchange column with a mobile phase containing 30 mM NH(4)(HPO(4))(2) at pH 7.5 within 7 min with ICP-MS providing element specific detection. The ICP-MS LODs for the metal-EDTA were in the range of 0.1-0.5 microg/L with the exception of Fe (15 microg/L). The proposed method was a simple procedure for s le processing, using direct injection of s le without removal of s le matrix and was successfully applied to the determination of metal-EDTA complexes in real s les.
Influence of Road Proximity on the Concentrations of Heavy Metals in Korean Urban Agricultural Soils and Crops
Publisher: Springer Science and Business Media LLC
Date: 20-12-2017
DOI: 10.1007/S00244-016-0344-Y
Abstract: The urban agricultural (UA) environment near active roadways can be degraded by traffic-related particles (i.e., exhaust gases and road dust), which may contain heavy metals. The current study investigated changes in heavy-metal [cadmium (Cd), copper (Cu), chromium (Cr) nickel (Ni), lead (Pb) and zinc (Zn)] concentrations in soils located near highly trafficked roads in Korea and the subsequent uptake of these metals by Chinese cabbage. Heavy-metal plant concentrations were determined in both washed and unwashed plant leaves to determine whether foliar deposition played any role in plant metal uptake. Soil concentrations of Cd, Cu, Pb, and Zn were all lower than the Korean standard soil limits and showed no significant influence from road traffic. In contrast, both Ni and Cr concentrations in soils collected within 10 m of the road were 4 and 5 times greater, respectively, than those in soils collected 70 m from the road. Heavy-metal concentrations in unwashed Chinese cabbage leaf collected at 5 m from the road were consistently greater than those of washed leaf s les, thus indicating the deposition of traffic-related particles on the plant surface. With the exception of Cu, all heavy-metal concentration in washed plant s les collected at 5 m also showed greater accumulation compared with s les collected further away. This was mainly attributed to increased total soil heavy-metal concentrations and increased metal phytoavailability induced by decreases in soil pH near the road. However, overall heavy-metal soil concentrations were well lower than the allowable concentrations, and the levels observed in plants collected in this study were considered not to currently pose a significant risk to human health. However, some traffic-related heavy metals, in particular Cr and Ni, were being accumulated in the roadside UA environment, which may warrant some caution regarding the environment and/or health issues in the future.
Artificial intelligence modeling and molecular docking to analyze the laccase delignification process of rice straw by Comamonas testosteroni FJ17
Publisher: Elsevier BV
Date: 02-2022
DOI: 10.1016/J.BIORTECH.2021.126565
Abstract: The laccase enzymatic characteristics and delignification processes of rice straw by Comamonas testosteroni FJ17 were investigated. Artificial intelligence modeling and molecular docking revealed the specific functional properties involved in the interaction between laccase and lignin compounds with a maximum laccase activity of 2016.7 U L
Removal of cadmium from wastewater using biofunctional reduced graphene oxide synthesized by Lysinibacillus sphaericus
Publisher: Elsevier BV
Date: 2023
An engineered human Fc domain that behaves like a pH-toggle switch for ultra-long circulation persistence
Publisher: Springer Science and Business Media LLC
Date: 06-11-2019
DOI: 10.1038/S41467-019-13108-2
Abstract: The pharmacokinetic properties of antibodies are largely dictated by the pH-dependent binding of the IgG fragment crystallizable (Fc) domain to the human neonatal Fc receptor (hFcRn). Engineered Fc domains that confer a longer circulation half-life by virtue of more favorable pH-dependent binding to hFcRn are of great therapeutic interest. Here we developed a pH Toggle switch Fc variant containing the L309D/Q311H/N434S (DHS) substitutions, which exhibits markedly improved pharmacokinetics relative to both native IgG1 and widely used half-life extension variants, both in conventional hFcRn transgenic mice and in new knock-in mouse strains. engineered specifically to recapitulate all the key processes relevant to human antibody persistence in circulation, namely: (i) physiological expression of hFcRn, (ii) the impact of hFcγRs on antibody clearance and (iii) the role of competing endogenous IgG. DHS-IgG retains intact effector functions, which are important for the clearance of target pathogenic cells and also has favorable developability.
Adsorption and catalytic reduction of rifampicin in wastewaters using hybrid rGO@Fe/Pd nanoparticles
Publisher: Elsevier BV
Date: 08-2020
Arsenic levels in rice grain and assessment of daily dietary intake of arsenic from rice in arsenic-contaminated regions of Bangladesh - Implications to groundwater irrigation
Publisher: Springer Science and Business Media LLC
Date: 14-01-2009
DOI: 10.1007/S10653-008-9238-X
Abstract: Chronic exposure to arsenic (As) causes significant human health effects, including various cancers and skin disorders. Naturally elevated concentrations of As have been detected in the groundwater of Bangladesh. Dietary intake and drinking water are the major routes of As exposure for humans. The objectives of this study were to measure As concentrations in rice grain collected from households in As-affected villages of Bangladesh where groundwater is used for agricultural irrigation and to estimate the daily intake of As consumed by the villagers from rice. The median and mean total As contents in 214 rice grain s les were 131 and 143 microg/kg, respectively, with a range of 2-557 microg/kg (dry weight, dw). Arsenic concentrations in control rice s les imported from Pakistan and India and on sale in Australian supermarkets were significantly lower (p < 0.001) than in rice from contaminated areas. Daily dietary intake of As from rice was 56.4 microg for adults (males and females) while the total daily intake of As from rice and from drinking water was 888.4 and 706.4 microg for adult males and adult females, respectively. From our study, it appears that the villagers are consuming a significant amount of As from rice and drinking water. The results suggest that the communities in the villages studied are potentially at risk of suffering from arsenic-related diseases.
Disposal and Use of Sewage on Agricultural Lands in Pakistan: A Review
Publisher: Elsevier BV
Date: 02-2010
Enhanced selectivity and sensitivity for inorganic anions using an ion-pairing reagent and sample stacking in capillary zone electrophoresis with direct UV detection
Publisher: Springer Science and Business Media LLC
Date: 2003
DOI: 10.1007/S00216-002-1621-3
Abstract: In this paper, the use of an ion-pairing reagent to improve the separation selectivity of inorganic anions in CZE was demonstrated by the addition of tetramethylammonium hydroxide (TMAOH) to the electrolyte. The separation of inorganic anions (Cl(-), I(-), Br(-), NO(2)(-), NO(3)(-) and SCN(-)) was performed using co-electroosmotic flow (EOF) with direct UV detection at 185 nm. The parameters affecting the mobility of the tested anions and the EOF such as the electrolyte pH and concentration of TMAOH in the electrolyte were examined to optimise the separation conditions. In addition, s le-stacking techniques were investigated to improve detection sensitivity. Detection sensitivities were improved 5-13-fold using electrokinetic s le stacking. The detection limits ranged from 1-3 micro mol L(-1). Finally, the proposed method was used for the separation of anions in groundwaters.
Effects of Copper, Lead, and Cadmium on the Sorption and Desorption of Atrazine onto and from Carbon Nanotubes
Publisher: American Chemical Society (ACS)
Date: 15-10-2008
DOI: 10.1021/ES801376W
Abstract: There are currently few studies on the dual effects of metal ions on the sorption of atrazine and conversely of atrazine on metal adsorption on multiwalled carbon nanotubes (MWCNTs). While a number of sorption models were considered to describe the sorption of atrazine on MWCNTs, the Polanyi-Manes model (PMM) fit the sorption isotherms well with the lowest mean weighted square errors. Atrazine was mainly adsorbed onto the surface and micropores of MWCNTs bundles or aggregates. Hydrogen bonding between azo and amino nitrogen of atrazine and functional groups on MWCNTs also occurred. Oxygenated functionalities, mainly carboxylic groups on MWCNTs surface, decreased the sorption of atrazine. Metal cations Cu2+, Pb2+, and Cd2+ diminished the sorption of atrazine depending on the oxygenated functionalities densities. The mechanisms ascribed were due to the formation of surface or inner-sphere complexes of Cu2+, Pb2+, and Cd2+ through carboxylic groups and hydration, which may occupy part of the surface of MWCNTs-O. The large hydration shell of metal cations may intrude or shield the hydrophobic and hydrophilic sites and indirectly compete with atrazine for surface sites, leading to the inhibition of atrazine adsorption around the metal-complexed moieties.
Impact of green synthesized iron oxide nanoparticles on the distribution and transformation of As species in contaminated soil
Publisher: Elsevier BV
Date: 03-2020
DOI: 10.1016/J.ENVPOL.2019.113668
Abstract: Iron nanoparticles (Fe NPs) have often been used for in situ remediation of both groundwater and soil. However, the impact of Fe NPs on the distribution and transformation of As species in contaminated soil is still largely unknown. In this study, green iron oxide nanoparticles synthesized using a euphorbia cochinchinensis leaf extract (GION) were used to stabilize As in a contaminated soil. GION exhibited excellent As stabilization effects, where As in non-specifically-bound and specifically-bound fractions decreased by 27.1% and 67.3% after 120 days incubation. While both arsenate (As (V)) and arsenite (As (III)) decreased after GION application, As (V) remained the dominant species in soil. X-ray photoelectron spectroscopy (XPS) confirmed that As (V) was the dominant species in specifically-bound fractions, while As (III) was the dominant species in amorphous and poorly-crystalline hydrous oxides of Fe and Al. Correlation analysis showed that while highly available As fractions were negatively correlated to oxalate and DCB extractable Fe, they were positively correlated to Fe
Bioavailability of heavy metals in soils: definitions and practical implementation—a critical review
Publisher: Springer Science and Business Media LLC
Date: 05-04-2015
DOI: 10.1007/S10653-015-9695-Y
Abstract: Worldwide regulatory frameworks for the assessment and remediation of contaminated soils have moved towards a risk-based approach, taking contaminant bioavailability into consideration. However, there is much debate on the precise definition of bioavailability and on the standardization of methods for the measurement of bioavailability so that it can be reliably applied as a tool for risk assessment. Therefore, in this paper, we reviewed the existing definitions of heavy metal bioavailability in relation to plant uptake (phytoavailability), in order to better understand both the conceptual and operational aspects of bioavailability. The related concepts of specific and non-specific adsorption, as well as complex formation and organic ligand affinity were also intensively discussed to explain the variations of heavy metal solubility and mobility in soils. Further, the most frequently used methods to measure bioavailable metal soil fractions based on both chemical extractions and mechanistic geochemical models were reviewed. For relatively highly mobile metals (Cd, Ni, and Zn), a neutral salt solution such as 0.01 M CaCl2 or 1 M NH4NO3 was recommended, whereas a strong acid or chelating solution such as 0.43 M HNO3 or 0.05 M DTPA was recommended for strongly soil-adsorbed and less mobile metals (Cu, Cr, and Pb). While methods which assessed the free metal ion activity in the pore water such as DGT and DMT or WHAM/Model VI, NICA-Donnan model, and TBLM are advantageous for providing a more direct measure of bioavailability, few of these models have to date been properly validated.
Removal mechanism of Sb(III) by a hybrid rGO-Fe/Ni composite prepared by green synthesis via a one-step method
Publisher: Elsevier BV
Date: 09-2021
Activity and safety of ceritinib in patients with ALK-rearranged non-small-cell lung cancer (ASCEND-1): updated results from the multicentre, open-label, phase 1 trial
Publisher: Elsevier BV
Date: 04-2016
New insights on removal mechanism of 17α-estradiol based on adsorption and Fenton-like oxidation by FeNPs/rGO
Publisher: Elsevier BV
Date: 2022
Graphene and Rice Straw Fibre Based 3D Photothermal Aerogels for Highly Efficient Solar Evaporation
Publisher: American Chemical Society (ACS)
Date: 09-03-2020
Detailed characterization of MLH1 p.D41H and p.N710D variants coexisting in a Lynch syndrome family with conserved MLH1 expression tumors
Publisher: Wiley
Date: 16-09-2015
DOI: 10.1111/CGE.12467
Abstract: Lynch syndrome (LS) is an autosomal dominant cancer-susceptibility disease caused by inactivating germline mutations in mismatch repair (MMR) genes. Variants of unknown significance (VUS) are often detected in mutational analysis of MMR genes. Here we describe a large family fulfilling Amsterdam I criteria carrying two rare VUS in the MLH1 gene: c.121G > C (p.D41H) and c.2128A > G (p.N710D). Collection of clinico-pathological data, multifactorial analysis, in silico predictions, and functional analyses were used to elucidate the clinical significance of the identified MLH1 VUS. Only the c.121G > C variant cosegregated with LS-associated tumors in the family. Diagnosed colorectal tumors were microsatellite unstable although immunohistochemical staining revealed no loss of MMR proteins expression. Multifactorial likelihood analysis classified c.2128A > G as a non-pathogenic variant and c.121G > C as pathogenic. In vitro functional tests revealed impaired MMR activity and diminished expression of c.121G > C. Accordingly, the N710 residue is located in the unconserved MLH1 C-terminal domain, whereas D41 is highly conserved and located in the ATPase domain. The obtained results will enable adequate genetic counseling of c.121G > C and c.2128A > G variant carriers and their families. Furthermore, they exemplify how cumulative data and comprehensive analyses are mandatory to refine the classification of MMR variants.
Removal of Copper from Water and Wastewater Using Dolochar
Publisher: Springer Science and Business Media LLC
Date: 16-04-2021
Is an adjusted rhizosphere-based method valid for field assessment of metal phytoavailability? Application to non-contaminated soils
Publisher: Elsevier BV
Date: 11-2007
DOI: 10.1016/J.ENVPOL.2007.01.019
Abstract: Previously recommended rhizosphere-based method (RHIZO) applied to moist rhizosphere soils was integrated with moist bulk soils, and termed adjusted-RHIZO method (A-RHIZO). The A-RHIZO and RHIZO methods were systematically compared with EDTA, DTPA, CaCl2 and the first step of the Community Bureau of Reference (BCR1) methods for assessing metal phytoavailability under field conditions. Results suggested that moist bulk soils are equally suited or even better than rhizosphere soils to estimate metal phytoavailability. The A-RHIZO method was preferred to other methods for predicting the phytoavailability of Ni, Cu, Zn, Cd, Pb and Mn to wheat roots with correlation coefficients of 0.730 (P<0.001), 0.854 (P<0.001), 0.887 (P<0.001), 0.739 (P<0.001), 0.725 (P<0.001) and 0.469 (P<0.05), respectively. When including soil properties, other extraction methods were also able to predict phytoavailability reasonably well for some metals. Soil pH, organic matter and Fe-Mn oxide contents, and cation-exchange capacity mostly influenced the extraction and phytoavailability of metals.
Switching and withdrawing hormonal agents for castration-resistant prostate cancer
Publisher: Springer Science and Business Media LLC
Date: 2015
Abstract: The antiandrogen withdrawal syndrome (AAWS) is characterized by tumour regression and a decline in serum PSA on discontinuation of antiandrogen therapy in patients with prostate cancer. This phenomenon has been best described with the withdrawal of the nonsteroidal antiandrogens, bicalutamide and flutamide, but has also been reported with a wide range of hormonal agents. Mutations that occur in advanced prostate cancer and induce partial activation of the androgen receptor (AR) by hormonal agents have been suggested as the main causal mechanism of the AAWS. Corticosteroids, used singly or in conjunction with abiraterone, docetaxel and cabazitaxel might also be associated with the AAWS. The discovery of the Phe876Leu mutation in the AR, which is activated by enzalutamide, raises the possibility of withdrawal responses to novel hormonal agents. This Review focusses on the molecular mechanisms responsible for withdrawal responses, the role of AR mutations in the development of treatment resistance, and the evidence for the sequential use of antiandrogens in prostate cancer therapy. The implications of AR mutations for the development of novel drugs that target the AR are discussed, as are the challenges associated with redefining the utility of older treatments in the current therapeutic landscape.
Cotton-based bionic tree-shaped photothermal evaporator for extraction of heavy metals from river sediment
Publisher: Elsevier BV
Date: 10-2023
Simultaneous removal of ammonia and phosphate using green synthesized iron oxide nanoparticles dispersed onto zeolite
Publisher: Elsevier BV
Date: 02-2020
DOI: 10.1016/J.SCITOTENV.2019.135002
Abstract: Since elevated levels of common nutrients, such as ammonia and phosphate, in natural water bodies (lakes and rivers) can lead to significant deterioration of pristine water ecosystems due to eutrophication, new and cost-effectiveness remediation strategies are urgently required. This work investigated the feasibility of using green synthesized iron oxide nanoparticles dispersed onto zeolite by eucalyptus leaf extracts (EL-MNP@zeolite), to simultaneously remove ammonia and phosphate from aqueous solutions. SEM and XRD both showed that EL-MNP@zeolite had better stability and dispersity than unsupported zeolite. At an initial concentration of 10 mg L
Enhanced antibiotic removal by the addition of bamboo charcoal during pig manure composting
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C5RA27493A
Abstract: The addition of bamboo charcoal during pig manure composting enhanced the depletion of antibiotics, ciprofloxacin, chlorotetracycline, and norfloxacin.
Removal mechanism of mitoxantrone by a green synthesized hybrid reduced graphene oxide @ iron nanoparticles
Publisher: Elsevier BV
Date: 05-2020
DOI: 10.1016/J.CHEMOSPHERE.2019.125700
Abstract: Anti-tumor drugs, due to their non-specific toxicity will cause long-term delayed toxicity to organisms and humans when discharged into the environment. In this study, reduced graphene oxide @ iron nanoparticles (rGO@Fe NPs) were successfully prepared using green tea extract as reductant and subsequently used for mitoxantrone (MTX) removal. SEM and Raman spectroscopy showed that 30-60 nm sized Fe NPs were loaded on rGO and green tea extract successfully reduced GO to rGO. The removal efficiency of MTX by the hybrid material was higher (98.5%) than either rGO (77.5%) or Fe NPs (53.1%) alone. In addition, the removal efficiency of MTX by the hybrid material was as high as 95% within 5 min, MTX adsorption followed both a pseudo-second-order kinetic model and the Langmuir isotherm, and it is a spontaneous adsorption. Recycling experiments showed that the removal efficiency of MTX decreased from 99.9 to 76.8% after six cycles, and could be as high as 99% in both municipal and medical wastewater. Scanning electron microscopy (SEM), Fourier transform infrared Spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS) and High performance liquid chromatography (HPLC) were all used to characterize and analyze the hybrid material, and possible adsorption mechanisms which revealed that MTX adsorption probably involved a combination of π-π stacking interaction, hydrogen bonding, electrostatic interaction and pore-filling.
Conditional neutrophil depletion challenges their contribution to mouse models of anaphylaxis
Publisher: Wiley
Date: 19-04-2023
DOI: 10.1111/ALL.15738
A general method for selectively coating photothermal materials on 3D porous substrate surfaces towards cost-effective and highly efficient solar steam generation
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/D0TA08539A
Abstract: An interfacial gelation coating method is developed to selectively coat photothermal materials on 3D substrate surfaces which dramatically reduces the consumption of photothermal materials while delivering superior performance in solar evaporation.
Bimetallic Fe/Ni nanoparticles derived from green synthesis for the removal of arsenic (V) in mine wastewater
Publisher: Elsevier BV
Date: 2022
Metal oxide nanomaterials used to remediate heavy metal contaminated soils have strong effects on nutrient and trace element phytoavailability
Publisher: Elsevier BV
Date: 08-2019
DOI: 10.1016/J.SCITOTENV.2019.04.442
Abstract: Engineered nanomaterials (ENMs) are increasingly utilised for the remediation of contaminated soils. In this study, contaminant (As, Pb), nutrient (N, P) and trace element (Cu, Fe, Mn, Zn) phytoavailability in three Australian soils contaminated (<10 years) with As (≈100 mg As kg
Photothermal materials: a key platform enabling highly efficient water evaporation driven by solar energy
Publisher: Elsevier BV
Date: 06-2019
Trends in speciation analysis of vanadium in environmental samples and biological fluids-A review
Publisher: Elsevier BV
Date: 2008
DOI: 10.1016/J.ACA.2007.11.013
Abstract: A comprehensive review is presented addressing recent trends in the speciation and determination of vanadium in environmental and biological s le matrices, including important analytical aspects such as s le clean up, pre-concentration and method development. Methodology based on both separation and spectroscopic techniques for the determination of vanadium speciation is discussed. A brief outline of analytical principles, together with an overview of the recent developments and applications of vanadium speciation determination is included. The newer methods for detecting metal ions including hyphenated spectroscopic techniques and s le preparation schemes are also discussed.
IgG subclasses determine pathways of anaphylaxis in mice
Publisher: Elsevier BV
Date: 2017
Heavy metal distribution, bioaccessibility, and phytoavailability in long-term contaminated soils from Lake Macquarie, Australia
Publisher: CSIRO Publishing
Date: 2009
DOI: 10.1071/SR08054
Abstract: This study was conducted to investigate the distribution, bioaccessibility, and phytoavailability of heavy metal(loids) in long-term contaminated soils within the vicinity of a lead (Pb) and zinc (Zn) smelter in Lake Macquarie, NSW, Australia. Thirty-two representative surface (0–100 mm) soils were collected from the region surrounding the smelter. The soils were analysed for aqua regia extractable heavy metals (Cu, Zn, Cd, Pb), bioaccessibility using a simplified physiological-based extraction technique (SBET), and phytoavailability using 1 m NH4NO3 extractions, together with key soil properties known to influence metal speciation and availability. The area was found to be potentially contaminated with heavy metals (Cu, Zn, Cd, Pb) with many soil s les exceeding the Australian Health Investigation Levels for ‘Standard’ residential areas. Lead bioaccessibility ranged from 32 to 100% of the total Pb concentration, with bioaccessibility increasing as metal loading increased. Heavy metal phytoavailability was strongly related to soil pH for Cu (r2 = 0.84, P 0.001), Pb (r2 = 0.70, P 0.001), and Cd (r2 = 0.66, P 0.001), implying that the phytoavailability of these heavy metal was mainly governed by soil acidity. Most significantly, the presence of multiple metals was found to influence metal phytoavailability. For ex le, the presence of Pb significantly influenced the phytoavailability of Cd (r2 = 0.89, P 0.001) and Zn (r2 = 0.78, P 0.001) in mixed heavy metal contaminated soils.
Release and stability of water dispersible biochar colloids in aquatic environments: Effects of pyrolysis temperature, particle size, and solution chemistry
Publisher: Elsevier BV
Date: 05-2020
Intracranial Efficacy of Crizotinib Versus Chemotherapy in Patients With Advanced ALK-Positive Non–Small-Cell Lung Cancer: Results From PROFILE 1014
Publisher: American Society of Clinical Oncology (ASCO)
Date: 20-08-2016
Abstract: Intracranial efficacy of first-line crizotinib versus chemotherapy was compared prospectively in the phase III PROFILE 1014 study in ALK-positive non–small-cell lung cancer. Patients were randomly assigned to receive crizotinib (250 mg twice daily n = 172) or chemotherapy (pemetrexed 500 mg/m 2 plus cisplatin 75 mg/m 2 or carboplatin at area under the curve 5 to 6, every 3 weeks for ≤ six cycles n = 171). Patients with stable treated brain metastases (tBM) were eligible. Intracranial efficacy was assessed at baseline and every 6 or 12 weeks in patients with or without known brain metastases (BM), respectively intracranial time to tumor progression (IC-TTP per protocol) and intracranial disease control rate (IC-DCR post hoc) were measured. The intent-to-treat population was also assessed. Of 343 patients in the intent-to-treat population, 23% had tBM at baseline. A nonsignificant IC-TTP improvement was observed with crizotinib in the intent-to-treat population (hazard ratio [HR], 0.60 P = .069), patients with tBM (HR, 0.45 P = .063), and patients without BM (HR, 0.69 P = .323). Among patients with tBM, IC-DCR was significantly higher with crizotinib versus chemotherapy at 12 weeks (85% v 45%, respectively P .001) and 24 weeks (56% v 25%, respectively P = .006). Progression-free survival was significantly longer with crizotinib versus chemotherapy in both subgroups (tBM present: HR, 0.40 P .001 median, 9.0 v 4.0 months, respectively BM absent: HR, 0.51 P .001 median, 11.1 v 7.2 months, respectively) and in the intent-to-treat population (HR, 0.45 P .001 median, 10.9 v 7.0 months, respectively). Compared with chemotherapy, crizotinib demonstrated a significantly higher IC-DCR in patients with tBM. Improvements in IC-TTP were not statistically significant in patients with or without tBM, although sensitivity to detect treatment differences in or between the two subgroups was low.
Elimination of chloride interference on arsenic speciation in ion chromatography inductively coupled mass spectrometry using an octopole collision/reaction system
Publisher: Elsevier BV
Date: 10-2007
Identification of six new susceptibility loci for invasive epithelial ovarian cancer
Publisher: Springer Science and Business Media LLC
Date: 12-01-2015
DOI: 10.1038/NG.3185
Enhanced removal of 2,4-dichlorophenol by Fe-Pd@ZIF-8 via adsorption and dechlorination
Publisher: Elsevier BV
Date: 2023
Interfacial solar evaporation driven lead removal from a contaminated soil
Publisher: Wiley
Date: 05-09-2021
DOI: 10.1002/EOM2.12140
Abstract: Interfacial solar steam generation is a green and sustainable technology which has been intensively studied in the fields of seawater desalination and wastewater purification for clean water production. Here, this technology is further developed for soil remediation. A new photothermal evaporator is designed to accelerate the extraction of lead (Pb) from soil solution, thereby successfully rapidly remediating a Pb contaminated soil. Within 2 weeks, this solar‐driven evaporative remediation (SDER) simultaneously decreases the bioavailable Pb fraction by 38.4% (from 359 to 221 mg kg −1 ) with no excessive nutrient loss nor secondary pollution. Post remediation plant assay indicates that the treated soil is significantly less phytotoxic, with shoot/root Pb contents decreasing by 50%. Since SDER involves no external energy input other than solar irradiation ongoing operating costs are low leading to significant potential for sustainable practical applications. Overall, this study demonstrates for the first time that interfacial solar evaporation can be successfully applied to soil remediation. image
Optimal isotherm model and explanatory characteristics associated with metal ion adsorption on humic acids isolated from forest soils
Publisher: Springer Science and Business Media LLC
Date: 13-06-2022
Simultaneous removal of mixed contaminants triclosan and copper by green synthesized bimetallic iron/nickel nanoparticles
Publisher: Elsevier BV
Date: 12-2019
DOI: 10.1016/J.SCITOTENV.2019.133878
Abstract: The mixed contamination of environmental matrices by antibacterial agents and heavy metals has attracted much attention worldwide due to the complex nature of their environmental interactions and their potential toxicity. In this work, green synthesized bimetallic iron/nickel nanoparticles (Fe/Ni NPs) was used to simultaneously remove triclosan (TCS) and copper (Cu (II)) under optimal experimental conditions with removal efficiencies of 75.8 and 44.1% respectively. However, in a mixed contaminant system the removal efficiencies of TCS and Cu (II) were lower than when TCS (85.8%) and Cu (II) (52.5%) were removed separately, suggesting that there was competitive relationship between the two contaminants and Fe/Ni NPs used for remediation. SEM-EDS, XRD and FTIR all indicated that both TCS and Cu (II) were adsorbed onto Fe/Ni NPs. Furthermore, while XPS showed that Cu (II) was reduced to Cu
A first in man, dose-finding study of the mTORC1/mTORC2 inhibitor OSI-027 in patients with advanced solid malignancies
Publisher: Springer Science and Business Media LLC
Date: 22-03-2016
DOI: 10.1038/BJC.2016.59
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