Results 11 to 20 of about 760,772 (313)

QUANTITATIVE DETERMINATION OF FATTY ACIDS IN INFANT FORMULA BY GAS CHROMATOGRAPHY WITHOUT DERIVATIZATION [PDF]

open access: yesActa Medica Iranica, 2006
Fatty acids play important roles in biological systems and the newborns fatty acids requirements are covered only by the milk. It is of particular interest to qualify the content of the fatty acids in the milk.
M. R. Oveisi   +4 more
doaj   +2 more sources

Coal mine spontaneous combustion fire monitoring system based on micro gas chromatograph and positive pressure gas delivery technology

open access: yesMeikuang Anquan, 2022
With the increase of coal mining intensity in mines, the tendency of coal to spontaneous combustion increases gradually. Due to the existing coal mine spontaneous combustion fire beam tube chromatography monitoring system has the problems of easy ...
LI Tuanjie   +6 more
doaj   +1 more source

Detection of Urethane in Non-alcoholic Fermented Food [PDF]

open access: yesE3S Web of Conferences, 2020
Among fermented foods, urethane often appears, which is a “2A” grade carcinogen. There are many types of fermented foods in my country, and the detection methods are not uniform enough, and no specific urethane detection standards have been formed.
Lihua Zhang
doaj   +1 more source

Gas–liquid chromatography of hyocholic acid

open access: yesJournal of Lipid Research, 1971
Partial derivatives of hyocholic acid were formed under the usual conditions for trifluoroacetylation of bile acids (trifluoroacetic anhydride, 35°C for 20 min).
Glen E. Mott   +2 more
doaj   +1 more source

Analysis of Lambic Beer Volatiles during Aging Using Gas Chromatography–Mass Spectrometry (GCMS) and Gas Chromatography–Olfactometry (GCO)

open access: yesBeverages, 2020
Lambic beer is produced using spontaneous fermentation. Gueuze is a style of lambic beer that blends “young” (1 year old) and “aged” (2+ years old) beers.
Katherine Witrick   +2 more
doaj   +1 more source

Comparison of phenolic and volatile profiles of edible and toxic forms of Detarium senegalense J. F. GMEL [PDF]

open access: yes, 2016
In Senegal, Detarium senegalense J.F. Gmel. (ditax in Wolof) is one of the most important important forest fruit species. However, exploitation of the edible fruit is based on local people's knowledge.
Boudard, Frédéric   +7 more
core   +2 more sources

Gas chromatography‐olfactometry [PDF]

open access: yesJournal of Separation Science, 2006
AbstractGC‐olfactometry (GC‐O) refers to the use of human assessors as a sensitive and selective detector for odour‐active compounds. The aim of this technique is to determine the odour activity of volatile compounds in a sample extract, and assign a relative importance to each compound.
Conor M, Delahunty   +2 more
openaire   +2 more sources

On-line monitoring of the transesterification reaction carried out in microreactors using near infrared spectroscopy [PDF]

open access: yes, 2013
Biodiesel can be produced from vegetable oils, animal fats, and waste cooking oils by transesterification with ethanol (also called ethanolysis) in order to substitute fossil fuels.
Dubreuil, Brigitte   +3 more
core   +4 more sources

Flow Rates in Liquid Chromatography, Gas Chromatography and Supercritical Fluid Chromatography: A Tool for Optimization

open access: yesJournal of Open Research Software, 2016
This paper aimed to develop a standalone application for optimizing flow rates in liquid chromatography (LC), gas chromatography (GC) and supercritical fluid chromatography (SFC). To do so, Van Deemter’s equation, Knox’ equation and Golay’s equation were
Joris Meurs
doaj   +1 more source

Investigation of the Chemical Composition and Efficiency of Seed Oil of Spindle Tree (Euonymus Europaea L.) on the Model of Non-allergic Dermatitis [PDF]

open access: yes, 2018
The aim of the research was to study the chemical composition and effectiveness of the seed oil of Spindle tree (Euonymus europaea L.) on the non-allergic contact dermatitis model.The oil was obtained by the extraction by petroleum ether from the seeds ...
Vrubel, O. (Olha)   +2 more
core   +2 more sources

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