Results 21 to 30 of about 5,352,584 (256)

Discrimination of Pakistani Fountain Pen Inks by Gas Chromatography-Mass Spectrometry (GC-MS)

International Journal of Analytical Chemistry, 2022
In developing countries, the chances of fraud in written documents are comparatively high. Therefore, comparison of fountain pen inks is especially imperative in examination of forensic questioned documents.
Mehwish Sharif, Muhammad Irfan Jalees, Syed Azhar Ali Shah Tirmazi, Muhammad Makshoof Athar, Arjumand Iqbal Durrani, Madeeha Batool   +5 more
doaj   +1 more source

Characterization of Aroma Compounds in Cooked Sorghum Using Comprehensive Two-Dimensional Gas Chromatography-Time-of-Flight Mass Spectrometry and Gas Chromatography-Olfactometry-Mass Spectrometry

Molecules, 2021
Sorghum is the major raw material for the production of Chinese Baijiu (Chinese liquor) and has a great effect on the flavor of Baijiu. Volatiles in cooked glutinous and non-glutinous sorghum samples were extracted using solid-phase microextraction (SPME)
Shuang Chen, Li Wang, Derang Ni, Lin Lin, Heyu Wang, Yan Xu   +5 more
doaj   +1 more source

Gas chromatography-mass spectrometry in the taxonomy of Miscanthus

Вавиловский журнал генетики и селекции, 2020
Chemotaxonomy as a system approach deals with intra- and interspecific polymorphism of a group of taxa in order to clarify their taxonomic positions or to select material for selection or introduction.
N. M. Slynko, N. V. Burmakina, O. M. Potseluyev, S. Yu. Kapustyanchik, G. Yu. Galitsin, T. N. Goryachkovskaya, L. V. Kuybida, S. V. Shekhovtsov, S. E. Peltek, V. K. Shumny   +9 more
doaj   +1 more source

State-of-the-Art Analytical Approaches for Illicit Drug Profiling in Forensic Investigations

Molecules, 2022
In forensic chemistry, when investigating seized illicit drugs, the profiling or chemical fingerprinting of drugs is considered fundamental. This involves the identification, quantitation and categorization of drug samples into groups, providing ...
Reem Ahmed, Mohamad J. Altamimi, Mayssa Hachem   +2 more
doaj   +1 more source

Blood-Based Lipidomics Approach to Evaluate Biomarkers Associated With Response to Olanzapine, Risperidone, and Quetiapine Treatment in Schizophrenia Patients

Frontiers in Psychiatry, 2018
This is the first study to identify lipidomic markers in plasma associated with response of acutely ill schizophrenia patients in response to specific antipsychotic treatments.
Adriano Aquino, Guilherme L. Alexandrino, Paul C. Guest, Fabio Augusto, Alexandre F. Gomes, Michael Murgu, Johann Steiner, Johann Steiner, Daniel Martins-de-Souza, Daniel Martins-de-Souza, Daniel Martins-de-Souza   +10 more
doaj   +1 more source

Combining peak- and chromatogram-based retention time alignment algorithms for multiple chromatography-mass spectrometry datasets [PDF]

, 2012
Hoffmann N, Keck M, Neuweger H, et al. Combining peak- and chromatogram-based retention time alignment algorithms for multiple chromatography-mass spectrometry datasets. BMC Bioinformatics.
Keck, Matthias, Wilhelm, Mathias, Neuweger, Heiko, Stoye, Jens ; https://orcid.org/, Ching-Wei Wang, Hoffmann, Nils ; https://orcid.org/, Högy, Petra, Wang Ching-Wei, Niehaus, Karsten   +8 more
core   +1 more source

Pipecolic Acid Quantification Using Gas Chromatography-coupled Mass Spectrometry

Bio-Protocol, 2020
Pipecolic acid (Pip), a non-proteinacious product of lysine catabolism, is an important regulator of immunity in plants and humans alike. For instance, Pip accumulation is associated with the genetic disorder Zellweger syndrome, chronic liver diseases ...
Keshun Yu, huazhen liu, Pradeep Kachroo
doaj   +1 more source

Liquid chromatography-tandem mass spectrometry - Application in the clinical laboratory [PDF]

, 2003
This review provides a concise survey of liquid chromatography tandem mass spectrometry (LCTMS) as an emerging technology in clinical chemistry. The combination of two mass spectrometers with an interposed collision cell characterizes LCTMS as an ...
Michael Vogeser, Vogeser, Michael
core   +2 more sources

Inter-laboratory reproducibility of fast gas chromatography-electron impact-time of flight mass spectrometry (GC-EI-TOF/MS) based plant metabolomics [PDF]

, 2009
The application of gas chromatography¿mass spectrometry (GC¿MS) to the `global¿ analysis of metabolites in complex samples (i.e. metabolomics) has now become routine.
Dunn, Warwick, Luedemann, A., Lüdemann, A., Arjen Lommen, Goodacre, R., Lommen, Arjen, Lorraine Kay, Dunn, Warwick B., Joachim Kopka, Allwood, J. William, de Koning, S., Erban, Alexander, Kay, Lorraine, Sjaak de Koning, Ralf Löscher, Erban, A., Alexander Erban, Royston Goodacre, de Koning, Sjaak, Löscher, R., Goodacre, Royston, Allwood, J., Kay, L., Allwood, J.W., Dun, W.B., Lommen, A., Kopka, J., Koning, S., Alexander Luedemann, Dunn, W. B., Allwood, J. W., J. William Allwood, Luedemann, Alexander, Dunn, Warwick B, Dunn, W., Kopka, Joachim, Allwood, James, Löscher, Ralf, Warwick B. Dunn   +38 more
core   +1 more source

Pitfall in the high-throughput quantification of whole blood cyclosporin A using liquid chromatography-tandem mass spectrometry [PDF]

, 2005
In a growing number of laboratories the technique of liquid chromatography-tandem mass spectrometry is used for the quantification of cyclosporin A in whole blood, employing cyclosporin D as the internal standard. Cyclosporin A is extensively metabolized
Michael Vogeser, Spöhrer, Ute, Vogeser, Michael, Ute Spöhrer   +3 more
core   +2 more sources