Results 241 to 250 of about 695,323 (266)

Influence of gas chromatographic parameters on measurement of 13C/12C isotope ratios by gas-liquid chromatography-combustion isotope ratio mass spectrometry. I

Journal of Chromatography A, 1996
A potential influence of gas chromatographic parameters on measured 13C/12C-isotope ratios of saturated fatty acid methyl esters in gas chromatography-combustion-isotope ratio mass spectrometry (GC-C-IRMS) has been studied. A dependence of measured isotope ratios on temperature gradients was observed and differences in measured δ13C-values for ...
W. Meier-Augenstein, P.W. Watt, C.-D. Langhans   +2 more
openaire   +1 more source

The determination of oxygen-18 to oxygen-16 ratios in inorganic phosphates by gas-liquid chromatographic-mass spectrometric examination of the tri-n-butyl derivative

The Analyst, 1975
Aqueous solutions containing inorganic orthophosphates from biological materials were purified on ion-exchange columns and the phosphate was precipitated as its silver salt. The dried silver phosphate was made to react with 1-bromobutane in dimethylformamide, yielding tri-n-butyl phosphate.
D, Barltrop, P A, Lewis
openaire   +2 more sources

Investigation of a packed bed in a mini channel with a low channel-to-particle diameter ratio: Flow regimes and mass transfer in gas–liquid operation

Chemical Engineering and Processing: Process Intensification, 2014
Abstract This work analyzes flow regimes and mass transfer in a miniaturized packed bed reactor under reacting conditions. The reactor consisted of a cylindrical channel with an inner diameter of 2 mm which was filled with spherical catalyst particles having an outer diameter of 0.8 mm.
Robert Langsch, Johannes Zalucky, Stefan Haase, Ruediger Lange   +3 more
openaire   +1 more source

Use of compounds naturally labeled with stable isotopes for the study of the metabolism of glycoprotein neutral sugars by gas-liquid chromatography-isotope-ratio mass spectrometry. Technical validation in the rat

Carbohydrate Research, 1992
In order to develop an alternative method to radioactive labeling for the study of the glycoprotein sugar metabolism in man, the possible use of stable isotopes provided by naturally, 13C-enriched dietary compounds has been explored in rat intestine and serum.
C, Rambal, C, Pachiaudi, S, Normand, J P, Riou, P, Louisot, A, Martin   +5 more
openaire   +2 more sources

The Ratio of Gas-Phase to Liquid-Phase Mass Transfer Coefficients in Gas-Liquid Contacting Processes

1984
The results of multicomponent experiments with mass transfer at the air-water interface are analyzed using the indirect approach of fitting overall mass transfer rate constants to the two-resistance model with appropriate corrections for molecular diffusivities.
Christoph Munz, Paul V. Roberts
openaire   +1 more source

Atomization and droplet dynamics of a gas-liquid two-phase jet under different mass loading ratios

International Journal of Multiphase Flow, 2022
Hao Wu, Fujun Zhang, Zhenyu Zhang, Lin Hou   +3 more
openaire   +1 more source

Gas-liquid mass transfer in a gas–liquid-solid three-phase moving bed

Chemical Engineering Journal, 2021
Yao Yang, Zhengliang Huang, Jingyuan Sun
exaly  

Process intensification in gas-liquid mass transfer by nanofluids: Mechanism and current status

Journal of Molecular Liquids, 2022
Huan Zhang
exaly  

Gas-liquid hydrodynamics and mass transfer in microreactors under ultrasonic oscillation

Chemical Engineering Journal, 2020
Lixia Yang, Feishi Xu, Zhikai Liu
exaly  

Hydrodynamics and mass transfer performance of gas–liquid microflow in viscous liquids

Chemical Engineering Journal, 2023
Sheng Lin, Jian Deng
exaly