Results 31 to 40 of about 209,682 (308)

Compositional and Enantiomeric Analysis of the Essential Oil of from India

Natural Product Communications, 2016
The leaf essential oil composition of Taxodium distichum L., collected from the foothills of Uttarakhand, India was analyzed using gas chromatography-flame ionization detection (GC-FID) and gas chromatography-mass spectrometry (GC-MS) equipped with DB-5 (
Rajendra C. Padalia, Ram S. Verma, Amit Chauhan, Prakash Goswami, Chandan S. Chanotiya   +4 more
doaj   +1 more source

Simultaneous analysis of saturated and unsaturated fatty acids present in pequi fruits by capillary electrophoresis

Química Nova, 2013
In the current study, an alternative method has been proposed for simultaneous analysis of palmitic, stearic, oleic, linoleic, and linolenic acids by capillary zone electrophoresis (CZE) using indirect detection. The background electrolyte (BGE) used for
Patrícia M. de Castro Barra, Marcone A. L. de Oliveira, Bárbara Nery-Enes, Leandro de M. Cardoso, Cristiane do C. Cesário, Ana V. B. Moreira, Helena M. Pinheiro-Sant'Ana, Maria do C. G. Peluzio   +7 more
doaj   +1 more source

Analytical methods in wineries: is it time to change? [PDF]

, 2005
A review of the methods for the most common parameters determined in wine—namely, ethanol, sulfur dioxide, reducing sugars, polyphenols, organic acids, total and volatile acidity, iron, soluble solids, pH, and color—reported in the last 10 years is ...
Andersen S. K., Anon, Arnes S., Belton P. S., Bi L. J., Billingsley A., Cardwell T. J., Cardwell T. J., Chen S. G., Chmilenko F. A., Cserhati T., Dai G. S., Dell´Oro V., Edberg U., Escobal A., Fang G. Z., Feng Z., Ga R. D., Gao Z. F., González-Rodríguez J., Guan J. R., Hu J. Y., J. González-Rodríguez, Kaufmann A., Kawamura Y., Kosir I. J., Kupina S. A., Lodi G., Luo H. Q., M. D. Luque de Castro, Mannino S., Miao J. G., Mou S., Olalla M., P. Pérez-Juan, Patz C. D., Polo M. C., Rapp A., Ribereau-Gayon J., Scollary G. R., Sebecic B., Vereda-Alonso E., Wang J. H., Wang J. S., Wang X. H., Wu X., Wu X. L., Yan J., Yu H., Zhang W., Zhang W., Zhou H.   +51 more
core   +1 more source

Chemical Composition of the Leaf Oil of from Vietnam

Natural Product Communications, 2014
Fresh leaves of Actephila excelsa (Dazl.) Muell. from Vietnam were steam distilled to produce an oil in a yield of 0.15% (v/w). The essential oil was analyzed by a combination of capillary gas chromatography-flame ionization detection (GC-FID) and gas ...
Do N. Dai, Tran D. Thang, Dau B. Thin, Isiaka A. Ogunwande   +3 more
doaj   +1 more source

Capillary gas-liquid chromatography of glycine-conjugated bile acids without prior hydrolysis.

Journal of Lipid Research, 1986
A method is described for the gas-liquid chromatographic (GLC) analysis of intact glycine conjugates of the major bile acids present in human plasma. It is, therefore, now possible to analyze glycine-conjugated and unconjugated bile acids together on a ...
J M Street, D J Trafford, H L Makin
doaj   +1 more source

Alkanes from plants of the genus achillea [PDF]

Journal of the Serbian Chemical Society, 1999
The hydrocarbon fractions of three species of Achillea L. have been analysed by capillary gas chromatography (GC) and GC-mass spectrometry(GC-MS) and were shown to consist of the conventional, odd-carbon number dominant distributions of n-alkane
Palić Radosav, Eglinton Timothy I., Benitez-Nelson Bryan C., Eglinton Geoffrey, Veliković Jasmina, Stojanović Gordana   +5 more
doaj   +3 more sources

Thermal modulation for gas chromatography [PDF]

, 2007
A thermal modulator device for gas chromatography and associated methods. The thermal modulator device includes a recirculating fluid cooling member, an electrically conductive capillary in direct thermal contact with the cooling member, and a power ...
Block, Bruce P., Hasselbrink, Ernest F., Libardoni, Mark, Sacks, Richard D., Stewart, Kristine, Waite, J. Hunter   +5 more
core   +1 more source

Determination of gamma-hydroxybutyric acid in dried blood spots using a simple GC-MS method with direct 'on spot' derivatization [PDF]

, 2010
The objective of this study was the development of an accurate and sensitive method for the determination of gamma-hydroxybutyric acid (GHB) in dried whole blood samples using a GC-MS method.
Ingels, Ann-Sofie, Lambert, Willy, Stove, Christophe   +2 more
core   +1 more source

Toward Stable Multivalent Metal Batteries: Understanding the Interfacial Chemistry for Magnesium and Calcium Metal Anodes

Advanced Functional Materials, EarlyView.
Interphase chemistry governs the stability of multivalent metal batteries. We summarize state‐of‐the‐art developments in calcium and magnesium metal batteries by focusing on the correlation among electrolytes, interphase layers, and the electrochemical performance of corresponding metal anodes.
Huijun Lin, Qi Meng, Juncai Long, Chuheng Cao, Zheng‐Long Xu   +4 more
wiley   +1 more source

Untwisted restacking of two-dimensional metal-organic framework nanosheets for highly selective isomer separations

Nature Communications, 2019
Metal-organic framework nanosheets are promising for separations, but interactions among them, affecting the performance, are largely unexplored. The authors reveal the favored stacking modes in a model system, and that untwisted restacking by thermal ...
Ze-Rong Tao, Jian-Xiang Wu, Ying-Jie Zhao, Ming Xu, Wen-Qi Tang, Qing-Hua Zhang, Lin Gu, Da-Huan Liu, Zhi-Yuan Gu   +8 more
doaj   +1 more source