Artículos de revistas: Recent submissions
Now showing items 1041-1060 of 2801
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(1987)Three types of effector proteins have been isolated from a partially purified protein preparation of potato tuber. One of the proteins is a typical calmodulin which has no effect on apyrase. The two other proteins modulate ...
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(1985)A highly sensitive extraction-spectrophotometric method has been developed for the determination of iron based on the formation of a ternary complex with 1,10-phenanthroline as a primary ligand and picrate as a counter ...
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(1997)The characteristic fatty acid composition of coconut oil provides mainly short- and medium- chain fatty acids when incorporated to the diet. These fatty acids have nutritional advantages because their metabolic disposition ...
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(2000)Experiments and three-dimensional numerical simulations are presented to elucidate the dynamics of granular material in a cylindrical dish driven by a horizontal, periodic motion. The following phenomena are obtained both ...
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(1975)The spontaneous hydrolysis of 2,4-dinitrophenyl phosphate dianion (I) is catalyzed by cationic micelles of the choline-derived surfactant (II, n-C16H33N+Me2CH2CH2OHBr-), but this surfactant is no more effective than ...
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(1996)The preparation of the copper(II) complex formulated as [Cu(DPA)(Ac)2]·2H2O is given (DPA: di(2-pyridyl)amine, Ac: acetate). The structure of this complex was determined by single-crystal X-ray analysis. It crystallizes ...
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(Elsevier B.V., 1996)Molecular characterisation of a lytic thermoactive β-1,3-glucanase from Oerskovia xanthineolytica LL-G109 has been performed. A molecular mass of 27 195.6 ± 1.3 Da and an isoelectric point of 4.85 were determined by ...
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(1992)An integrated-sensor method for the determination of formaldehyde based on retention of the reaction product of the analyte with p-rosaniline and sulfite in a flow-cell packed with Dowex 1-X-8 anion exchange resin was ...
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(1988)The purpose of this study was the elucidation of the possible importance of bivalent metal ions in controlling the activity of apyrase (ATP: diphosphohydrolase EC 3.6.1.5) purified from tubers of Solanum tuberosum cv ...
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(1987)Alfalfa plants (Medicago sativa, L. cv. Aragón) inoculated with Rhizobium meliloti weregrown with a N-free-nutrient solution in controlled environmental chambers. After 5 weeks plants were placed under 2 irradiance regimes ...
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(Sociedad Chilena de Quimica, 1999)Experimental studies are made for some selected electronic transitions in Cs2NaY1-xPrxCl6 crystals within the full doping range of the crystal lattice (0 ≤ × ≤ 1). Decay curves are recorded for various temperatures between ...
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(1960)The electrocadiograms of 13 patients with myocardial infarction and left bundle branch block are analyzed. The diagnosis of the infarction was based on autopsy (6 cases), on typical electrocardiographic changes in some ...
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(1992)The amphetamine derivative 4,5‐dimethoxy‐2‐nitrophenyl‐2‐aminopropane, a positional isomer of the potent hallucinogen DON, was studied by cyclic voltammetry and polarography. The nitro compound was reduced to the corresponding ...
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(Springer-Verlag, 1979)Seventeen granitoid samples from batholiths in central Chile (33 °-34 ° S) have been analyzed for trace element content. The samples range in age from Paleozoic to Tertiary, and in rock type from quartz diorite to granite. ...
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(1982)Two homogeneous isoenzymes of apyrase from Pimpernel and Desirée varieties of Solanum tuberosum were obtained by affinity chromatography on agarose-Cibacron Blue or agarose-ATP-phosphonate columns. Both enzymes split POP ...
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(1992)A solvent extraction-spectrophotometric determination of trace amounts of ruthenium has been developed, based on the formation of an ion association complex of ruthenium (III) with 2,4,6-tris(2'-pyridyl)-1,3,5-triazine as ...
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(1997)In this study, different analytical methods, i.e. polar compounds, polar compound distribution, free fatty acids, peroxide value, conjugated dienes and trienes, oxidized fatty acids, viscosity and oxifrit-test, are applied ...
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(2000)We report measurements of the resistivity (Formula presented) of a gold film 70 nm thick deposited on mica preheated to 300 °C in UHV, performed between 4 and 300 K, and measurements of the surface topography of the same ...
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(1983)The photochemistry of several phenyl alkyl and p-anisyl alkyl ketones has been examined using laser flash photolysis and conventional quantum yield techniques. The methoxy-substituted ketones show higher activation energies ...