Results 261 to 270 of about 418,530 (303)

Lewis Acid Catalysis in Aqueous Media

ChemInform, 2005
AbstractFor Abstract see ChemInform Abstract in Full Text.
Shu Kobayashi, Kei Manabe
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Chalcopyrite leaching in alcoholic acid media

Hydrometallurgy, 2014
Abstract In recent years, the kinetics and mechanism of chalcopyrite dissolution in different media have been the focus of much investigation since a fundamental understanding of the phenomena would help to resolve the problems that challenge the implementation of a hydrometallurgical processing alternative. The addition of polar organic solvents has
O.J. Solís-Marcíal, G.T. Lapidus
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Acidity function in dipolar aprotic media

Proceedings of the Indian Academy of Sciences - Section A, 1972
The H0 acidity function has been determined for hydrochloric and trichloroacetic acids in dimethyl sulphoxide (DMSO) and acetonitrile using three amine class of indicators. The variation of H0 with solvent composition at a fixed concentration of 0.1 M HCI in DMSO-water, acetonitrile-water and DMSO acetonitrile mixtures was also studied.
C. Kalidas, D. Lakshmana Rao, V. Srinivas Rao   +2 more
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Amino Acids Profiles in Biological Media

AIP Conference Proceedings, 2010
An accurate analytical method was developed to determine amino acids in some biological specimens by GC/MS technique. Stable isotopes provide useful tools for a variety of studies, offering ideal internal standards in quantitative information. Isotopic dilution gas chromatography--mass spectrometry (ID-GC/MS) is the techniques used for quantitative ...
A. Iordache, E. Horj, A. R. Ani, C. Mesaros, S. Morar, O. Cozar, M. Culea, Madalin Bunoiu, Iosif Malaescu   +8 more
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The acidity of superacidic media derived from fluorosulfuric acid and trifluoromethanesulfonic acid

Analytica Chimica Acta, 1984
Abstract The acidity level of superacidic media derived from fluorosulfuric acid and trifluoromethanesulfonic acid (TFMS) was determined by using the potentiometric indicators tetrachloroquinone and tetrafluoroquinone. A voltammetric and potentiometric study of these indicators was conducted to evaluate their pH indicator range, from the strongest ...
Bernard Carre, Jacques Devynck
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Kinetics in Acid Media

Industrial & Engineering Chemistry, 1943
Charles W. Deane, John R. Huffman
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Cation-exchange in oxalic acid-nitric acid media

Fresenius' Zeitschrift für analytische Chemie, 1984
R. Kuroda, N. Hosoi
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Fluorescence of benzoic acid in aqueous acidic media

The Journal of Physical Chemistry, 1978
Roberto Martin, George A. Clarke
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Culture Media for Lactic Acid Bacteria

2011
This review deals with culture media for the detection, selective isolation and cultivation of different groups of lactic acid bacteria (LAB). Numerous elective and semi-selective media are available and currently used for LAB. Most of them have been developed to isolate certain groups of LAB from a specific habitat, such as meat or dairy products ...
U. Schillinger, W. H. Holzapfel
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Oxygen reduction in acid media

Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, 1989
C. Hinnen, F. Coowar, M. Savy
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