Results 41 to 50 of about 75,559 (340)

Recent developments in the rapid analysis of plants and tracking their bioactive constituents [PDF]

, 2009
Natural products chemistry has witnessed many new developments in the last 5 years like extractions with subcritical water and ionic liquids, LC/HRMS and LC/SPE/cryo-NMR, UHPLC, TLC/MS, MS-based preparative HPLC, comprehensive chromatography (GC × GC, LC
Beek, T.A., van, Claassen, F.W., Dapkevicius, A., Exarchou, V., Jeurissen, S.M.F., Klift, E.J.C., van der, Koleva, I., Tetala, K.K.R.   +7 more
core   +2 more sources

Smith-Waterman peak alignment for comprehensive two-dimensional gas chromatography-mass spectrometry

BMC Bioinformatics, 2011
Background Comprehensive two-dimensional gas chromatography coupled with mass spectrometry (GC × GC-MS) is a powerful technique which has gained increasing attention over the last two decades.
Koo Imhoi, Kim Seongho, Fang Aiqin, Zhang Xiang   +3 more
doaj   +1 more source

Volatile Metabolites in Lavage Fluid Are Correlated with Cytokine Production in a Valley Fever Murine Model

Journal of Fungi, 2023
Coccidioides immitis and Coccidioides posadasii are soil-dwelling fungi of arid regions in North and South America that are responsible for Valley fever (coccidioidomycosis). Forty percent of patients with Valley fever exhibit symptoms ranging from mild,
Emily A. Higgins Keppler, Marley C. Caballero Van Dyke, Heather L. Mead, Douglas F. Lake, D. Mitchell Magee, Bridget M. Barker, Heather D. Bean   +6 more
doaj   +1 more source

Contribution of thirdhand smoke to overall tobacco smoke exposure in pediatric patients: study protocol. [PDF]

, 2019
BackgroundThirdhand smoke (THS) is the persistent residue resulting from secondhand smoke (SHS) that accumulates in dust, objects, and on surfaces in homes where tobacco has been used, and is reemitted into air.
Geraci, Maegan A, Hoh, Eunha, Koutsounadis, Gena N, Mahabee-Gittens, E Melinda, Matt, Georg E, Merianos, Ashley L, Meyers, Gabriel T, Quintana, Penelope JE, Ruwe, Abigail G, Stone, Lara, Witry, John K, Wullenweber, Chase A, Zakrajsek, Mark A   +12 more
core   +1 more source

Quantitative carbon distribution analysis of hydrocarbons, alcohols and carboxylic acids in a Fischer-Tropsch product from a Co/TiO2 catalyst during gas phase pilot plant operation

Journal of Analytical Science and Technology, 2020
Comprehensive two-dimensional gas chromatography (GCxGC) analysis for 1-alcohols and gas chromatography–mass spectrometry (GC-MS) analysis for carboxylic acids, derivatised as their methyl esters, have been applied to liquid and wax Fischer-Tropsch (FT ...
Roy Partington, Jay Clarkson, James Paterson, Kay Sullivan, Jon Wilson   +4 more
doaj   +1 more source

Restoration for Comprehensive Two-Dimensional Gas Chromatography [PDF]

2005 IEEE International Conference on Electro Information Technology, 2006
This paper develops an approach for restoration of data from comprehensive two-dimensional gas chromatography (GCtimesGC), a powerful new technology for chemical separations. GCtimesGC restoration is required to separate coeluting (i.e., overlapping) peaks. The GCtimesGC process is modeled as a two-dimensional linear, shift-variant system, based on the
null Jiazheng Shi, S.E. Reichenbach
openaire   +1 more source

Diamondoid diacids ('O4' species) in oil sands process-affected water. [PDF]

, 2013
RATIONALE: As a by-product of oil sands extraction, large volumes of oil sands process water (OSPW) are generated, which are contaminated with a large range of water-soluble organic compounds.
Barrow, Beam, Clemente, Frank, Frank, Grewer, Han, Han, Headley, Headley, Jones, Leishman, Nemba, Rontani, Rowland, Rowland, Rowland, Rowland, Rowland, Scarlett, Waltman, Wang   +21 more
core   +2 more sources

Region of interest selection for GC×GC–MS data using a pseudo fisher ratio moving window with connected components segmentation

Journal of Chromatography Open, 2023
Comprehensive two-dimensional gas chromatography mass spectrometry (GC×GC–MS) data present several challenges for analysis largely because chemical factors drift along the chromatographic modes across different chromatographic runs, and there is ...
Ryland T. Giebelhaus, A. Paulina de la Mata, James J. Harynuk   +2 more
doaj   +1 more source

Systemic Metabolomic Changes in Blood Samples of Lung Cancer Patients Identified by Gas Chromatography Time-of-Flight Mass Spectrometry. [PDF]

, 2015
Lung cancer is a leading cause of cancer deaths worldwide. Metabolic alterations in tumor cells coupled with systemic indicators of the host response to tumor development have the potential to yield blood profiles with clinical utility for diagnosis and ...
Barupal, Dinesh K, Fiehn, Oliver, Gandara, David R, Hanash, Samir M, Kim, Kyoungmi, Miyamoto, Suzanne, Taguchi, Ayumu, Taylor, Sandra L, Wikoff, William R, Wohlgemuth, Gert, Yoneda, Ken Y   +10 more
core   +6 more sources

Comprehensive two-dimensional gas chromatography (GC x GC) measurements of volatile organic compounds in the atmosphere [PDF]

, 2003
. During the MINOS campaign in August 2001 comprehensive two-dimensional gas chromatography (GC×GC) was applied to the in situ measurements of atmospheric volatile organic compounds (VOCs) at the Finokalia ground station, Crete.
Adahchour, M., Beens, J., Brinkman, U.A.T., Lelieveld, J., Stee, L.L.P. van, Vreuls, R.J.J., Williams, J.F., Xu, X.   +7 more
core   +3 more sources