نتایج جستجو برای: Gas chromatography–Mass Spectrometry (GC–MS)

تعداد نتایج: 326793  

2015
H. Abirami Muhammad Ilyas Prem Kumar Nargis Begum

The aim of this study is to evaluate the bioactive compounds in the ethanolic leaf extract of Azima tetracantha by using Gas chromatographyMass Spectrometry (GCMS). Azima tetracantha leaves were collected from Ariyalur District, Tamil Nadu. The dried leaf powder was extracted with the solvent ethanol by using Soxhlet apparatus. One microlitre of the extract was subjected for analysis by GCMS to...

Journal: :Journal of clinical microbiology 2015
Timothy J J Inglis Dorothee R Hahne Adam J Merritt Michael W Clarke

Solid-phase microextraction gas chromatography-mass spectrometry (SPME-GCMS) was used to show that dimethyl sulfide produced by Burkholderia pseudomallei is responsible for its unusual truffle-like smell and distinguishes the species from Burkholderia thailandensis. SPME-GCMS can be safely used to detect dimethyl sulfide produced by agar-grown B. pseudomallei.

Journal: :Nutrition research reviews 1993
B Sandström S Fairweather-Tait R Hurrell W van Dokkum

Thermal ionization mass spectrometry (T I M S). Fast atom bombardment mass spectrometry (F A B M S). . Inductively coupled mass spectrometry (I C P M S) Electron impact mass spectrometry (E I M S) and gas chromatography mass spectrometry (GCMS). Dosage considerations. Intrinsic or extrinsic tag. Intestinal transit time and study length Endogenously excreted elements .

2016
Y. T. Boon

In this study, encapsulation of agarwood oil with non-ionic surfactant, Tween 80 was prepared at critical micelle concentration of 0.0167 % v/v to produce the most stable nano-emulsion in aqueous. The encapsulation has minimized the bioactive compounds degradation in various pH conditions thus prolong their shelf life and maintained its initial oil grade. The oil grading of the prepared samples...

2011
LACRIMIOARA SENILA ADRIANA GOG MARIN SENILA CECILIA ROMAN LUMINITA SILAGHI-DUMITRESCU

The aim of this study was the development and validation of a new method for carbohydrates analyses obtained from woody biomass, as a step of bioethanol production. In this study, we have quantified carbohydrates in wood by gas chromatography (GC) after derivatization. Quantification of carbohydrates was made by liquid-liquid extraction, oximation and silylation and, finally, analysis by gas ch...

Journal: :Advances in space research : the official journal of the Committee on Space Research 1995
P Ehrenfreund J J Boon J Commandeur C Sagan W R Thompson B Khare

Comparative pyrolysis mass spectrometric data of Titan aerosol analogues, called "tholins", are presented. The Titan tholins were produced in the laboratory at Cornell by irradiation of simulated Titan atmospheres with high energy electrons in plasma discharge. Mass-spectrometry measurements were performed at FOM of the solid phase of various tholins by Curie-point pyrolysis Gas-Chromatograph...

Journal: :Annals of the Academy of Medicine, Singapore 2008
Yanling Yang Zhang Yao Jinqing Song Yuki Hasegawa Masahiko Kimura Seiji Yamaguchi Yuwu Jiang Jiong Qin Xiru Wu

From June 1998 to May 2007, 9566 urine samples were collected from patients with psychomotor deficits, seizures, vomiting and unconsciousness in Peking University First Hospital. Their urine organic acids profiles were analysed using gas chromatography - mass spectrometry (GCMS), GCMS solution and Inborn Errors of Metabolism Screening System software. In all patients, blood acylcarnitines were ...

1998
Alison M. Jones Paola Iacumin Edward D. Young

The viability of oxygen isotope analysis of tooth enamel by UV laser ablation and fluorination has been demonstrated by comparison with the Ag PO extraction method. In-situ analyses by UV laser fluorination using both isotope ratio mass 3 4 Ž . spectrometry and isotope ratio monitoring gas chromatography mass spectrometry irm-GCMS microanalysis are comparaŽ . 18 ble to those of the Ag PO method...

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