ORCID Profile
0000-0003-2890-9286
Current Organisation
University of Tasmania
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Publisher: Modestum Publishing Ltd
Date: 15-12-2017
Publisher: Springer Science and Business Media LLC
Date: 28-06-2019
Publisher: Wiley
Date: 25-02-2013
Publisher: Springer Science and Business Media LLC
Date: 15-03-2022
Publisher: Wiley
Date: 18-11-2016
Publisher: Wiley
Date: 05-12-2020
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C9AY01810G
Publisher: American Chemical Society (ACS)
Date: 03-1995
DOI: 10.1021/JA00116A019
Publisher: African Journals Online (AJOL)
Date: 26-11-2018
Publisher: Informa UK Limited
Date: 24-06-2019
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6AY01674J
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C3AY41004H
Publisher: Wiley
Date: 30-05-2017
DOI: 10.1002/FFJ.3383
Publisher: Informa UK Limited
Date: 28-09-2017
Publisher: Wiley
Date: 10-2015
Publisher: Elsevier
Date: 2022
Publisher: Wiley
Date: 12-03-2014
Publisher: Springer Science and Business Media LLC
Date: 12-2021
Publisher: Wiley
Date: 03-2011
DOI: 10.1002/FFJ.2059
Publisher: Springer Science and Business Media LLC
Date: 23-01-2008
Publisher: Pleiades Publishing Ltd
Date: 23-10-2015
Publisher: Springer Science and Business Media LLC
Date: 23-04-2019
Publisher: Elsevier BV
Date: 10-2022
Publisher: American Chemical Society (ACS)
Date: 19-10-2002
DOI: 10.1021/JP026617F
Publisher: Elsevier BV
Date: 03-2014
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C4JA00005F
Publisher: Royal Society of Chemistry (RSC)
Date: 10-06-2002
DOI: 10.1039/B202960J
Publisher: IntechOpen
Date: 22-12-2021
Publisher: Springer Science and Business Media LLC
Date: 06-11-2021
Publisher: Kaplan Higher Education Academy Pte Ltd
Date: 23-09-2022
Publisher: Elsevier BV
Date: 12-2016
Publisher: Springer Science and Business Media LLC
Date: 16-11-2018
Publisher: Springer Science and Business Media LLC
Date: 06-05-2022
Publisher: Elsevier BV
Date: 05-2014
Publisher: Wiley
Date: 08-11-2011
DOI: 10.1002/PCA.1368
Publisher: Wiley
Date: 17-07-2006
Publisher: Springer Science and Business Media LLC
Date: 30-06-2018
Publisher: Wiley
Date: 05-03-2008
DOI: 10.1002/APP.27952
Publisher: Elsevier BV
Date: 2018
Publisher: Elsevier BV
Date: 04-2020
Publisher: American Chemical Society (ACS)
Date: 08-1976
DOI: 10.1021/AC50003A027
Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D2GC00906D
Publisher: Elsevier BV
Date: 09-2003
Publisher: American Chemical Society (ACS)
Date: 23-11-2002
DOI: 10.1021/AC020428B
Publisher: American Chemical Society (ACS)
Date: 19-01-2016
DOI: 10.1021/ACS.ANALCHEM.5B03181
Abstract: We describe a new process for preparing porous solid phase microextraction (SPME) coatings by the sputtering of silicon onto silica fibers. The microstructure of these coatings is a function of the substrate geometry and mean free path of the silicon atoms, and the coating thickness is controlled by the sputtering time. Sputtered silicon structures on silica fibers were treated with piranha solution (a mixture of concd H2SO4 and 30% H2O2) to increase the concentration of silanol groups on their surfaces, and the nanostructures were silanized with octadecyldimethylmethoxysilane in the gas phase. The attachment of this hydrophobic ligand was confirmed by X-ray photoelectron spectroscopy and contact angle goniometry on model, planar silicon substrates. Sputtered silicon coatings adhered strongly to their surfaces, as they were able to pass the Scotch tape adhesion test. The extraction time and temperature for headspace extraction of mixtures of alkanes and alcohols on the sputtered fibers were optimized (5 min and 40 °C), and the extraction performances of SPME fibers with 1.0 or 2.0 μm of sputtered silicon were compared to those from a commercial 7 μm poly(dimethylsiloxane) (PDMS) fiber. For mixtures of alcohols, aldehydes, amines, and esters, the 2.0 μm sputtered silicon fiber yielded signals that were 3-9, 3-5, 2.5-4.5, and 1.5-2 times higher, respectively, than those of the commercial fiber. For the heavier alkanes (undecane-hexadecane), the 2.0 μm sputtered fiber yielded signals that were approximately 1.0-1.5 times higher than the commercial fiber. The sputtered fibers extracted low molecular weight analytes that were not detectable with the commercial fiber. The selectivity of the sputtered fibers appears to favor analytes that have both a hydrophobic component and hydrogen-bonding capabilities. No detectable carryover between runs was noted for the sputtered fibers. The repeatability (RSD%) for a fiber (n = 3) was less than 10% for all analytes tested, and the between-fiber reproducibility (n = 3) was 0-15%, generally 5-10%, for all analytes tested. The repeatabilities of our sputtered fibers and the commercial 7 μm PDMS fiber are essentially the same. Fibers could be used for at least 300 extractions without loss of performance. More than 50 compounds were identified in a gas chromatography-mass spectrometry headspace analysis of a real world botanical s le with the 2.0 μm fiber.
Publisher: Springer Science and Business Media LLC
Date: 29-05-2020
Publisher: American Chemical Society (ACS)
Date: 23-06-2023
Publisher: Elsevier BV
Date: 07-2020
Publisher: Elsevier BV
Date: 09-2013
Publisher: MDPI AG
Date: 2014
Publisher: Elsevier BV
Date: 02-2020
Publisher: EJournal Publishing
Date: 04-2016
Publisher: Oxford University Press (OUP)
Date: 10-2016
Publisher: American Chemical Society (ACS)
Date: 03-1983
DOI: 10.1021/AC00254A003
Publisher: Elsevier BV
Date: 06-2021
Publisher: Elsevier
Date: 1977
Publisher: Springer Science and Business Media LLC
Date: 07-01-2017
Publisher: Elsevier BV
Date: 06-2016
Publisher: Springer Science and Business Media LLC
Date: 20-03-2020
Publisher: Oxford University Press (OUP)
Date: 07-2002
Publisher: Elsevier BV
Date: 07-2018
DOI: 10.1016/J.CHROMA.2018.04.042
Abstract: The total ion current chromatogram (TICC) obtained by liquid-chromatography-mass spectrometry (LC-MS) is often extremely complex and 'noisy' in appearance, particularly when an electrospray ionization source is used. Accordingly, meaningful qualitative and quantitative information can be obtained in LC-MS by data mining processes. Here, one or more higher-quality mass chromatograms can be identified/extracted/isolated and combined to form a TICC, wherein much of the background mass noise is eliminated, and quantitative data for chromatographic peaks can be obtained. Pattern Recognition Entropy (PRE) is a new application of Shannon's statistical concept of entropy. PRE is both a pattern recognition tool and a summary statistic that can be used to identify information-containing mass chromatograms, where higher quality data (higher signal-to-noise mass chromatograms) usually have lower PRE values. Reduced TICCs are obtained by first calculating the PRE values of the component mass chromatograms. A plot of PRE value vs. m/z for the mass chromatograms is then generated, and the resulting band of PRE values is fit to a piecewise spline polynomial. The distribution of the differences between the in idual PRE values and the spline fit is then used to select 'good' mass chromatograms. For the data set considered herein, best results were obtained with a threshold of 0.5 standard deviations below the average value (value of the spline). PRE reduces the number of component mass chromatograms significantly (by an order of magnitude) and at the same time preserves most of the chemical information that is collectively in them. It can also distinguish between mass chromatograms of chemically similar species. PRE is arguably a less computationally intensive alternative to the widely used CODA algorithm for variable reduction. It produces reduced TICCs of comparable if not higher quality, and it requires only a single user input for variable selection. Reduced TICCs generated by PRE can be smoothed to further improve their signal-to-noise ratios.
Publisher: Springer Science and Business Media LLC
Date: 12-11-2018
Publisher: Elsevier BV
Date: 2021
Publisher: IntechOpen
Date: 22-12-2021
Publisher: Walter de Gruyter GmbH
Date: 21-09-2007
Publisher: Informa UK Limited
Date: 08-08-2022
Publisher: Informa UK Limited
Date: 04-10-2018
Publisher: Walter de Gruyter GmbH
Date: 04-11-2020
Publisher: Wiley
Date: 25-02-2016
Abstract: Disposable pipette tips extraction consists of a solid-phase extraction in which the sorbent is poorly dispersed in a pipette tip, which allows a quick and dynamic contact between the aspirated analyte from the s le and the solid phase. It is a technique used particularly in food and forensic analysis, since it requires a small amount of s le and solvent. This article highlights the principles, advantages and disadvantages of the disposable pipette tips extraction method and reviews recent applications.
Publisher: Elsevier BV
Date: 2021
Publisher: Canadian Science Publishing
Date: 06-1996
DOI: 10.1139/F96-061
Publisher: Springer Science and Business Media LLC
Date: 25-06-2023
Publisher: Wiley
Date: 18-03-2019
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6AY00087H
Publisher: Sociedade Brasileira de Quimica (SBQ)
Date: 2016
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/C9AY01769K
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C9AY01773A
Publisher: Informa UK Limited
Date: 31-05-2021
Publisher: Springer Science and Business Media LLC
Date: 22-05-2017
Publisher: Elsevier BV
Date: 07-2016
Publisher: Oxford University Press (OUP)
Date: 05-2008
Publisher: American Chemical Society (ACS)
Date: 09-02-2016
Abstract: Pesticide exposure threatens many freshwater and estuarine ecosystems around the world. This study examined the temporal and spatial trends of pesticide concentrations in a waterway within an agriculturally developed dry-tropics catchment using a combination of grab and passive s ling methods over a continuous two-year monitoring program. A total of 43 pesticide residues were detected with 7 pesticides exceeding ecologically relevant water quality guidelines/trigger values during the study period and 4 (ametryn, atrazine, diuron, and metolachlor) of these exceeding guidelines for several months. The presence and concentration of the pesticides in the stream coincided with seasonal variability in rainfall, harvest timing/cropping cycle, and management changes. The s ling approach used demonstrates that the application of these complementary s ling techniques (both grab and passive s ling methods) was effective in establishing pesticide usage patterns in upstream locations where application data are unavailable.
Publisher: Wiley
Date: 05-07-2010
Publisher: Frontiers Media SA
Date: 06-2021
DOI: 10.3389/FEDUC.2021.678613
Abstract: Rural, regional and remote (RRR) communities and industries in Australia cannot currently produce or attract the workforce needed to survive, making skills and qualifications in science, technology, engineering and mathematics (STEM) increasingly important. Yet student engagement in STEM education in RRR schools remains low, with limited numbers of young people either moving into further STEM education post-secondary, or accessing readily available STEM-related jobs in RRR areas. Currently many rural children and young people are not exposed to, nor recognize the erse ways in which STEM knowledge is required and used in their world. We propose that if young people are to increasingly engage with STEM and continue onto STEM-related careers, they must be able to see connections between their “school” learning of STEM and the STEM knowledge that is enacted in rural work and life. We also suggest that for this to change, there should be increased visibility of “place-based” knowledges, including Aboriginal STEM knowledges, in RRR communities to promote enhanced student engagement with STEM. In this paper we explore these ideas by drawing on Foucault and Bourdieu understandings to develop a methodological framework – the Place-based STEM- alignment Framework for the purposes of exposing alternate STEM knowledges. We argue that the nuanced and critical methodological approach applied in the development of the Place-based STEM-alignment Framework , is necessary in order to generate this analytical tool and provide data that will allow us the scope to “reset” current understandings of STEM knowledges. The framework design provides us with the methodological vehicle to identify possible reasons for the invisibility of STEM knowledge and practices in the local fabric of RRR communities and to examine enablers and/or barriers to engagement in STEM learning. The framework must be a practical tool for use in the field, one that can be used in RRR communities to engage, children and young people, in STEM, in a way that is meaningful and that aligns with their everyday experience of RRR life. Finally, the framework has to work to enable alternative perspectives to be exposed that will advance methodological considerations of STEM.
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C2AY26560E
Publisher: Springer Science and Business Media LLC
Date: 06-10-2013
Publisher: American Chemical Society (ACS)
Date: 17-06-2006
DOI: 10.1021/AC060542K
Publisher: Wiley
Date: 21-05-2014
Publisher: Elsevier BV
Date: 2005
Publisher: Modestum Publishing Ltd
Date: 27-12-2017
Publisher: Informa UK Limited
Date: 06-07-2010
Publisher: Wiley
Date: 30-09-2014
DOI: 10.1002/MAS.21443
Publisher: American Chemical Society (ACS)
Date: 30-10-2001
DOI: 10.1021/AC015569C
Publisher: Elsevier BV
Date: 15-01-2005
Publisher: American Chemical Society (ACS)
Date: 03-05-2001
DOI: 10.1021/AC0100502
Publisher: Informa UK Limited
Date: 09-2012
Publisher: No publisher found
Date: 2023
Publisher: Springer Science and Business Media LLC
Date: 09-2004
Publisher: Springer Science and Business Media LLC
Date: 18-11-2015
Publisher: Elsevier BV
Date: 04-2018
Publisher: Informa UK Limited
Date: 13-10-2015
Publisher: Springer Science and Business Media LLC
Date: 05-2015
Publisher: SciELO Agencia Nacional de Investigacion y Desarrollo (ANID)
Date: 03-2019
Publisher: Mary Ann Liebert Inc
Date: 02-2009
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C3AY41190G
Publisher: Oxford University Press (OUP)
Date: 16-01-2015
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C9AN00165D
Publisher: American Chemical Society (ACS)
Date: 07-1989
DOI: 10.1021/AR00163A004
Publisher: Wiley
Date: 10-03-2011
Publisher: Oxford University Press (OUP)
Date: 10-06-2016
Publisher: Springer Science and Business Media LLC
Date: 25-04-2016
Publisher: Wiley
Date: 09-08-2012
Publisher: Springer Science and Business Media LLC
Date: 06-2011
DOI: 10.1007/BF03249070
Publisher: Informa UK Limited
Date: 21-04-2020
Publisher: Springer Science and Business Media LLC
Date: 20-01-2015
Publisher: Springer Science and Business Media LLC
Date: 31-10-2019
Publisher: Pleiades Publishing Ltd
Date: 20-07-2016
Publisher: Elsevier BV
Date: 04-2019
Publisher: Springer Nature Singapore
Date: 2023
Publisher: Wiley
Date: 08-03-2016
Publisher: Pleiades Publishing Ltd
Date: 10-2009
Publisher: American Chemical Society (ACS)
Date: 22-07-2010
DOI: 10.1021/AM100383J
Publisher: Informa UK Limited
Date: 18-02-2015
Publisher: Pleiades Publishing Ltd
Date: 07-2018
Publisher: American Chemical Society (ACS)
Date: 26-11-1997
DOI: 10.1021/ES9705452
Publisher: Springer Science and Business Media LLC
Date: 30-06-2011
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8AY02309C
Publisher: Bentham Science Publishers Ltd.
Date: 05-04-2017
Publisher: Elsevier BV
Date: 10-2023
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7AY02031G
Publisher: Elsevier
Date: 2022
Publisher: Informa UK Limited
Date: 15-11-2009
Publisher: Pleiades Publishing Ltd
Date: 12-2019
Publisher: Springer Science and Business Media LLC
Date: 30-11-2017
Publisher: SciELO Agencia Nacional de Investigacion y Desarrollo (ANID)
Date: 12-2015
Publisher: Elsevier BV
Date: 11-2022
Publisher: Wiley
Date: 19-08-2010
DOI: 10.1002/FFJ.1984
Publisher: Informa UK Limited
Date: 2010
Publisher: American Chemical Society (ACS)
Date: 19-11-2020
Publisher: Informa UK Limited
Date: 19-08-2016
Publisher: Elsevier BV
Date: 02-2014
Publisher: Informa UK Limited
Date: 03-09-2017
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C3AY40355F
Publisher: American Chemical Society (ACS)
Date: 05-1955
DOI: 10.1021/AC60101A024
Publisher: Elsevier BV
Date: 04-2003
Publisher: Wiley
Date: 03-2007
Publisher: Elsevier BV
Date: 05-2010
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5AY01970B
Publisher: American Chemical Society (ACS)
Date: 07-05-2003
DOI: 10.1021/LA020986L
Publisher: Oxford University Press (OUP)
Date: 26-12-2019
Publisher: American Chemical Society (ACS)
Date: 05-1996
DOI: 10.1021/AC961912F
Publisher: Springer Science and Business Media LLC
Date: 16-04-2022
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C5RA22079C
Publisher: Akademizdatcenter Nauka
Date: 2015
Publisher: Springer Science and Business Media LLC
Date: 31-10-2022
Publisher: Springer Science and Business Media LLC
Date: 11-05-2016
Publisher: SciELO Agencia Nacional de Investigacion y Desarrollo (ANID)
Date: 09-2019
Publisher: Springer Science and Business Media LLC
Date: 28-02-2020
Publisher: Elsevier BV
Date: 12-2018
No related grants have been discovered for Massoud Kaykhaii.