Browsing by Title
Now showing items 52154-52173 of 91997
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(Royal Society of Chemistry, 2015)© The Royal Society of Chemistry 2015.Carbon monoxide hydrogenation was studied over a γ-alumina-supported 1 wt% Rh catalyst by means of kinetic and in situ infrared measurements. The study was carried out at 200-300 °C, ...
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(1998)Background: Induction of salivation is becoming increasingly popular in the assessment of salivary gland status. Various mechanical or pharmacological procedures are empirically used to produce salivation. Oral stimulation ...
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(1984)The kinetic mechanisms of Escherichia coli phosphofructokinase-2 (Pfk-2) and of the mutant enzyme Pfk-2* were investigated. Initial velocity studies showed that both enzymes have a sequential kinetic mechanism, indicating ...
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(1976)Functional micelles of hexadecyl(2-hydroxyethyl)dimethylammonium bromide (I) are better catalysts than hexadecyltrimethylammonium bromide (CTABr) for the alkaline hydrolysis of diethyl and di-n-hexyl p-nitrophenyl phosphate ...
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(1965)Apyrase from potato extracts has been purified 200-fold by two different procedures; both procedures furnish an apyrase which splits ATP faster than ADP. By using P32-labeled substrates, it was possible to demonstrate that ...
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(Biophysical Society, 2003)Fast Ca2+ release kinetics were measured in cardiac sarcoplasmic reticulum vesicles actively loaded with Ca2+. Release was induced in solutions containing 1.2 mM free ATP and variable free [Ca2+] and [Mg2+]. Release rate ...
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(2003)The kinetic mechanism of rat liver hexokinase D (‘ glucokinase’) was studied under non-co-operative conditions with 2- deoxyglucose as substrate, chosen to avoid uncertainties derived from the co-operativity observed ...
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(SOCIEDAD CHILENA DE QUIMICA, 2000-03)The reaction between 2-p-methoxyphenyl-4-phenyl-2-oxazolin-5-one and 2,2,6,6-tetramethyl-1-piperidinyl-N-oxide (TEMPO) in benzene as the solvent generates quantitatively 4,4'-bis-[2-p-methoxyphenyl-4-phenyl-2-oxazolin-5-one]. ...
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(1997)The sensitized photo-oxidation of boldine and its permethylated derivative, glaucine, has been studied in several solvents using steady-state kinetic methods. Values of kB, the total rate constant for the reaction between ...
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(EDP Sciences, 2013)Context. It is well known that the kinetic temperatures, Tkin, of the molecular clouds in the Galactic center region are higher than in typical disk clouds. However, the Tkin of the molecular complexes found at higher ...
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(1984)The number and nature of glucose-phosphorylating enzymes of rat intestinal mucosa were investigated by chromatographic, electrophoretic, and kinetic methods. Three fractions with glucose-phosphorylating activity were ...
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(1999)St I is a toxin present in the Caribbean Sea anemone Stichodactyla helianthus which is highly hemolytic in the nanomolar concentration range. Exposure of the toxin to free radicals produced in the pyrolysis of 2,2′ ...
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(1999)St I is a toxin present in the Caribbean Sea anemone Stichodactyla helianthus which is highly hemolytic in the nanomolar concentration range. Exposure of the toxin to free radicals produced in the pyrolysis of 2,2'- ...
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(1998)Detection of O,('A,) phosphorescence emission, A,,,, = 1270 nm, following laser excitation and steady-state competitive methods was employed to measure total rate constants, k,, for the reactions of the diuretic furosemide, ...
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Kinetics and mechanism of the reaction of a nitroxide radical (tempol) with a phenolic antioxidant (2003)In the absence of redox-active transition metal ions, the removal of Tempol by Trolox occurs by a simple bimolecular reaction that, most probably, involves a hydrogen transfer from phenol to nitroxide. The specific rate ...
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(Elsevier, 2017)The reaction of [P,N-{(C6H5)(2)(C5H4N)P}Re(CO)(3)Br] (RePNBr) with silver triflate leads to the complex [P,N-{(C6H5)(2)(C5H4N)P}Re(CO)(3)(O-CF3SO3)] (RePNTfO) with moderate yield. This new P,N-Re-I triflate compound contains ...
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(Frontiers Media, 2022)Few kinetic parameters, or reaction rates, are known up to date in detail about 1-chloro and 1-fluoro-2,4-dinitrobenzene (ClDNB and FDNB, respectively) with a series of biothiols in aqueous media. These biological nucleophiles ...
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(American Physical Society, 2017)Redfield theory provides a closed kinetic description of a quantum system in weak contact with a very dense reservoir. Landau-Zener theory does the same for a time-dependent driven system in contact with a sparse reservoir. ...
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(1983)The interaction of Ca2+ and Ba2+ with a Ca2+-activated K+ channel from rabbit skeletal muscle membranes is studied in planar lipid bilayers. At [Ca2+]≥100 µM in the cis side (the side to which the vesicles are added) and ...
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(PERGAMON-ELSEVIER SCIENCE LTD, 2005-11)Copper was removed from an acidic mine drainage (AMD) using a liquid emulsion membrane contactor. The acidic drainage was a harmful natural acidic solution generated by bioleaching and chemical leaching of copper and iron ...
