ORCID Profile
0000-0001-9957-3463
Current Organisations
University College London
,
CSIRO
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Publisher: American Chemical Society (ACS)
Date: 30-08-2023
Publisher: Unpublished
Date: 2020
Publisher: Elsevier BV
Date: 08-2019
Publisher: Wiley
Date: 24-09-2010
DOI: 10.1002/AJPA.21389
Publisher: Unpublished
Date: 2002
Publisher: Unpublished
Date: 2014
Publisher: Elsevier BV
Date: 05-2022
Publisher: Elsevier BV
Date: 11-2019
Publisher: Elsevier BV
Date: 03-2023
Publisher: Elsevier BV
Date: 10-2023
Publisher: American Chemical Society (ACS)
Date: 22-10-2019
Publisher: Elsevier BV
Date: 08-2022
Publisher: Elsevier BV
Date: 09-2018
Publisher: Authorea, Inc.
Date: 24-05-2022
DOI: 10.22541/AU.165342424.43784242/V1
Abstract: The equilibrium CO2 solubility of 2-[2-(dimethylamino)ethoxy]ethanol (DMAEE) was investigated at the temperature range of 298.15-323.15 K with the CO2 partial pressure from 5.0 to 60 kPa. A novel modified Kent-Eisenberg model was proposed to predict the CO2 solubility of DMAEE with the absolute average deviation (ADD) of 3.0% in this work, and this model provides more accurate prediction than the reported Kent-Eisenberg, Austgen, Hu-Chakma, and Li-Shen model. Then four reported tertiary amines were used to validate the universality of the proposed model and the obtained results indicate that the developed model can be applied to the mentioned amines with an acceptable AADs (4.80, 5.47, 8.56, and 3.65 %). In addition, the heat of CO2 absorption and the dissociation constant (pKa) also were systematically evaluated and compared with other reported amines, all obtained results indicates that the DMAEE has a potential to be an alternative absorbent for post-combustion CO2 capture.
Publisher: Elsevier BV
Date: 07-2020
Publisher: MDPI AG
Date: 28-01-2021
Abstract: Steam-CO2 reforming of biomass derived synthesis gas (bio-syngas) was investigated with regard to the steam concentration in the feed using Rh-loaded alumina foam monolith catalysts, which was also accompanied by thermodynamic equilibrium calculation. With 40 vol % steam addition, steam methane reforming and water gas shift reaction were prevailed at the temperature below 640 °C, above which methane dry reforming and reverse-water gas shift reaction were intensified. Substantial change of activation energy based on the methane conversion was observed at 640 °C, where the reaction seemed to be shifted from the kinetic controlled region to the mass transfer controlled region. At the reduced steam of 20 vol %, the increase in the gas velocity led to the increase in the contribution of steam reforming. Comparing to the absence of steam, the addition of steam (40 vol %) resulted in the increase in the production of H2 and CO2, which in turn increased the H2/CO ratio by 95% and decreased the CO/CO2 ratio by 60%. Rh-loaded alumina monolith was revealed to have a good stability in upgrading of the raw bio-syngas.
Publisher: Elsevier BV
Date: 11-2018
Publisher: American Chemical Society (ACS)
Date: 08-03-2023
Publisher: Elsevier BV
Date: 11-2022
Publisher: Elsevier
Date: 1997
Publisher: Elsevier BV
Date: 08-1998
Publisher: Elsevier BV
Date: 04-2001
Publisher: Wiley
Date: 07-09-2004
DOI: 10.1002/POLA.20328
Publisher: CSIRO
Date: 2015
Publisher: Wiley
Date: 05-02-2019
Publisher: Elsevier BV
Date: 09-2022
Publisher: Elsevier BV
Date: 02-2017
DOI: 10.1016/J.WASMAN.2017.01.006
Abstract: The efficient use of solid organic waste materials is an issue of particular importance for the wine industry. This paper focuses on the valorization of grape marc, the major component of winery organic waste (60-70%). Two methods were designed and compared: combustion to generate electricity, and the pyrolysis for the production of bio-char, bio-oil, and bio-gas. Each of these processes was analysed to determine their economic and environmental viability. The flow-sheeting software, ASPEN PLUS, was used to model the two cases. Data from the simulations was used to inform techno-economic and environmental analyses. Pyrolysis was found to be the superior method of utilizing grape marc from both economic and environmental perspectives. Both pyrolysis and combustion exploit the energy content of the waste, which is not recovered by the traditional treatments, composting or distillation. In addition to the production of energy, pyrolysis yielded 151kg of bio-char and 140kg of bio-oil per tonne of grape marc. These products may be used in place of fossil fuels, resulting in a net reduction of carbon dioxide emissions. However, the potential deleterious effects resulting from the replacement of the traditional treatments was not considered. Investment in either pyrolysis or combustion had a negligible impact on the price of the wine produced for wineries with an annual grape crush larger than 1000 tonnes. Composting has significant economic advantages in wineries with a small grape crush of less than 50 tonnes.
Publisher: Unpublished
Date: 2002
Publisher: Springer Science and Business Media LLC
Date: 19-02-2018
DOI: 10.1038/S41598-018-20970-5
Abstract: Anthropogenic activity is now recognised as having profoundly and permanently altered the Earth system, suggesting we have entered a human-dominated geological epoch, the ‘Anthropocene’. To formally define the onset of the Anthropocene, a synchronous global signature within geological-forming materials is required. Here we report a series of precisely-dated tree-ring records from C bell Island (Southern Ocean) that capture peak atmospheric radiocarbon ( 14 C) resulting from Northern Hemisphere-dominated thermonuclear bomb tests during the 1950s and 1960s. The only alien tree on the island, a Sitka spruce ( Picea sitchensis ), allows us to seasonally-resolve Southern Hemisphere atmospheric 14 C, demonstrating the ‘bomb peak’ in this remote and pristine location occurred in the last-quarter of 1965 (October-December), coincident with the broader changes associated with the post-World War II ‘Great Acceleration’ in industrial capacity and consumption. Our findings provide a precisely-resolved potential Global Stratotype Section and Point (GSSP) or ‘golden spike’, marking the onset of the Anthropocene Epoch.
Publisher: Hindawi Limited
Date: 30-11-2022
DOI: 10.1155/2022/5823345
Abstract: Optic nerve head (ONH) edema is a clinical manifestation of many ocular and systemic disorders. Ocular and central nervous system imaging has been used to differentiate the underlying cause of ONH edema and monitor the disease course. ONH vessel abnormalities are among the earliest signs of impaired axonal transportation. Optical coherence tomography angiography (OCTA) is a noninvasive method for imaging ONH and peripapillary vessels and has been used extensively for studying vascular changes in ONH disorders, including ONH edema. In this narrative review, we describe OCTA findings of the most common causes of ONH edema and its differential diagnoses including ONH drusen.
Publisher: Elsevier BV
Date: 06-2023
Publisher: Unpublished
Date: 2018
Publisher: Elsevier BV
Date: 11-2012
Publisher: Elsevier BV
Date: 05-2009
Publisher: Elsevier BV
Date: 07-2023
Publisher: Elsevier BV
Date: 10-2021
Publisher: Unpublished
Date: 2009
Publisher: Elsevier BV
Date: 10-2020
Publisher: American Chemical Society (ACS)
Date: 24-01-2020
Publisher: Elsevier BV
Date: 05-2021
Publisher: American Chemical Society (ACS)
Date: 02-04-2020
Publisher: American Chemical Society (ACS)
Date: 29-04-2019
Publisher: Elsevier BV
Date: 11-2019
Publisher: Routledge
Date: 24-02-2014
Publisher: Elsevier BV
Date: 05-2023
Publisher: Elsevier BV
Date: 2023
Publisher: American Chemical Society (ACS)
Date: 25-06-2022
Publisher: Wiley
Date: 20-12-2014
DOI: 10.1111/JOCN.12520
Abstract: To describe healthcare providers' attitudes to family involvement during routine care and family presence during resuscitation or other invasive procedures in adult intensive care units in Saudi Arabia. Previous research has shown that healthcare professionals have revealed a ersity of opinions on family involvement during routine care and family presence during resuscitation or other invasive procedures. Attitude assessment can provide an indication of staff acceptance or rejection of the practice and also help identify key potential barriers that will need to be addressed. It has also been evident that participation in the care has potential benefits for patients and families as well as healthcare providers. A quantitative descriptive design. A questionnaire was used with a convenience s le of 468 healthcare providers who were recruited from eight intensive care units. The analysis found that healthcare providers had positive attitudes towards family involvement during routine care, but negative attitudes towards family presence during resuscitation or other invasive procedures. Physicians expressed more opposition to the practice than did nurses and respiratory therapists. Staff indicated a need to develop written guidelines and policies, as well as educational programmes, to address this sensitive issue in clinical practice. Family is an important resource in patient care in the context of the critical care environment. Clinical barriers including resources, hospital policies and guidelines, staff and public education should be taken into account to facilitate family integration to the care model. The findings can help to develop policies and guidelines for safe implementation of the practice. They can also encourage those who design nursing and other medical curricula to place more emphasis on the role of the family especially in critical care settings.
Publisher: Elsevier BV
Date: 05-2021
Publisher: Elsevier BV
Date: 08-2022
Publisher: Elsevier BV
Date: 02-2020
Publisher: Elsevier BV
Date: 05-2023
Publisher: American Chemical Society (ACS)
Date: 06-09-2019
Publisher: Cambridge University Press (CUP)
Date: 1999
Abstract: Hemipelagic sediments from the Amazon deep-sea fan, ODP Site 932 (5° 12.7′N, 47° 1.8′W), and continental shelf provide a 50,000-yr-long pollen record of Amazon Basin vegetation. The age model for Hole 932A is constrained by eight magnetic remanence intensity features, one paleomagnetic excursion, and three AMS 14 C dates. Alchornea, Melastomataceae, Myrtaceae, and Moraceae/Urticaceae are dominant taxa in the pollen record between 40,200 and 19,800 cal yr B.P. Andean taxa, such as Podocarpus and Hedyosmum, increase in abundance between 19,800 and 11,000 cal yr B.P. and prior to 40,200 cal yr B.P. The Holocene pollen assemblage, derived from Amazon River and continental shelf sediments, is dominated by secondary growth taxa, such as Cecropia. Climatic factors influencing the development of glacial and interglacial tropical vegetation are considered by comparing marine with terrestrial records of vegetation change. This comparison shows that the Amazon Basin forests were not extensively replaced by savanna vegetation during the glacial period, contradicting the refugia hypothesis.
Publisher: Elsevier BV
Date: 11-2019
Publisher: Springer Science and Business Media LLC
Date: 17-08-2022
Publisher: Springer Science and Business Media LLC
Date: 11-11-2016
Publisher: American Chemical Society (ACS)
Date: 05-1999
DOI: 10.1021/EF980265N
Location: United Kingdom of Great Britain and Northern Ireland
Location: Australia
No related grants have been discovered for Mark Maslin.