Browsing by Issue Date Artículos de revistas
Now showing items 201-220 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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(Cêntre d'Etude des Plantes Médicinales, 1987)Six flavonoids have been isolated from the stems, leaves and flowers of Centaurea floccosa Hook. et Arn.: hispidulin, eriodictyol, taxifolin, kaempterol, quercetin and chrysoeriol. They were identified by comparison of ...
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(Real Academia de Farmacia, 1987)Se investiga en diez plantas chilenas, usadas en medicina popular, la presencia de triterpenos y/o esteroles, alcaloides, antraquinonas, flavonoides, cumarinas, compuestos fenólicos y saponinas. Se identifican β-sitosterol, ...
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(Escuela de Medicina, Facultad de Medicina, Universidad de Valparaíso, 1987)Se realizó un estudio fitomicrobiológico con extractos de Allium sativum (ajo). se identificó en el extracto el principio activo alicina. Se estudió su acción antimicótica frente a varias cepas de Aspergillus fumigatus, ...
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(Instituto de Investigaciones Agropecuarias, 1987-07)A first prospection was made of the content and identity of the carbohydrates in Chilean soils. Seven volcanic and two alluvial soils were selected. Determinations, by the Anthrone method, were done of free carbohydrates ...
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(Sociedad Chilena de Química, 1988)Se han determinado las propiedades magnéticas y espectroscópicas de los complejos de cobre (II) con bases de Schiff,[Cu(BS)Cl2]. Las bases de Schiff son: N-R-Salicilaldimina, donde R es 2-piridina: 4-metil-2-piridina; o ...
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(Lippincott Williams & Wilkins, 1988)Acetylsalicylic acid (ASA) is one of the oldest and most widely used medicinal agents today and its spectrum of therapeutic use is continually widening. Although many other drugs have been introduced during the last few ...
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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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(1988)‘Marraqueta’ and ‘Hallulla’ breads, widely consumed in Chile, were enriched with 6, 9 and 12% full‐fat sweet lupin flour (FFLF) containing a small amount of alkaloids (0.025%) and 42.8% protein. Physical characteristics ...
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(1988)An electrochemical study of the hallucinogen (±)-1-(2,5-dimethoxy-4- nitrophenyl)-2-aminopropane, which differs from similar compounds in that a hydrophilic nitro group replaces Hydrophobic substituants on the 4-position ...
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(1988)The polymerization of methyl methacrylate photosensitized by benzion methyl ether over a wide range of initiator absorbances was investigated. Both the polymerization rate and the polymer molecular weight distribution are ...
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(1988)Fluorescence techniques are used to study the effect of size on the properties of dioctadecyldimethylammonium chloride vesicles. The solubilization site and the deactivation rates of excited pyrene by bromide counterions ...
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(1988)A mathematical treatment is presented that allows the experimental determination of fluoride concentrations at the ng ml<sup>-1</sup> level with good precision. The proposed method is able to determine blank ...
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(1988)A study of the adsorption and thermodynamic functions of sulfur dioxide on Aerosil has been made, leading to some conclusions about the mobility of the SO2 molecule. The differential and integral enthalpies and entropies ...
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(Real Academia de Farmacia, 1988)
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(Informa Healthcare, 1988)A study was done of the effect of blending time on similar mixtures containing nitrofurantoin both in crystalline and macrocrystalline forms. The powder mixture operations were performed using a Twin-Shell Blender (V-type). ...
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(1988)The kinetics of the quenching of excited pyrene by several molecules in a variety of hydrocarbon solvents and in a diol are reported. The rate constants for reaction of the excited pyrene are, for the most part, ...
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(1988)Nifedipine, a calcium antagonist drug, produces a well-defined polarographic wave due to the four-electron, four-proton reduction of the nitro group. This peak is diffusion-controlled and shows a linear dependence on the ...