Browsing by Issue Date Artículos de revistas
Now showing items 61-80 of 2801
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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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(1975)A solvent and/or environmental effect has been introduced into the MO CNDO/2 calculation of a model hydrogen bonded system. Proton potential curves, potential energy, dipole moments, the polarizability component parallel ...
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(Sociedad Chilena de Pediatría, 1975)La acidosis tubular renal es una entidad nosológica en que hay incapacidad de acidificar la orina por insuficiencia tubular, con función glomerular poco o nada alterada. Las acidosis tubulares pueden ser primarias, si la ...
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(The Williams & Wilkins Co., 1975)Characterization of the metal-complexing ability of polyfunctional macromolecules through the determination of stability constants of their metalic complexes is discussed along with the validity of ascribing a relationship ...
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(The Williams & Wilkins Co., 1975)An experimental method to determine available phosphate in soils using anion exchange resin as an extractant has been described (3, 5). However, when this method is applied to volcanic ash-derived soils, some problems ...
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(Sociedad Chilena de Pediatría, 1975)Una función importante del riñón es la de regular el equilibrio ácido-base de la sangre, lo que se logra variando la excreción diaria de H+ por la orina. En condiciones normales el organismo humano está sometido a una ...
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(Pergamon Press, 1975)In the u.v. region the C.D. spectra of mixed complexes of Cu(II), aminoacids and heterocyclic ligands depend upon the nature of the heterocyclic ligand, and work on the Cotton effects of bis-Ł-aminoacidates of cu(II) in ...
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(1976)The effect of tachycardia on the distribution of coronary blood flow was studied in the dog heart using the radioactive microsphere technique. Increasing heart rate from 1.7 to 3.0 Hz produced an increment of flow to the ...
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(Oxford University Press, 1976)AUTHORS' SYNOPSIS: The effect of tachycardia on the distribution of coronary blood flow was studied in the dog heart using the radioactive microsphere technique. Increasing heart rate from 1.7 to 3.0 Hz produced an increment ...
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(Sociedad Chilena de Tecnología de Alimentos, 1976)En un estudio microbiológico realizado en cuatro plantas procesadoras de langostinos de la zona litoral central, se encontraron valores de Staphylococcus coagulasa positiva demasiado elevados como para ser atribuídos ...
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(Sociedad Chilena de Tecnología de Alimentos, 1976)La limpieza constituye una operación crítica en la industria alimentaria. Generalmente se tiende a considerar como impurezas o suciedad solamente a materias tales como tierra, pesticidas, microorganismos, grasas, carbohidratos, ...
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(Sociedad Chilena de Tecnología de Alimentos, 1976)Debido al consumo relativamente elevado de las salsas de tomate en el país y como una contribución a la TABLA DE COMPOSICION QUIMICA DE LOS ALIMENTOS CHILENOS, se consideró de interés conocer la composición química de las ...
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(Sociedad de Biología de Chile, 1976)Las bis-2-oxazolin-5-onas son compuestos obtenidos por una reacción de ciclación de Glutarilbis-u-aminoácidos. Estas bisoxazolinonas permiten obtener péptidos sintéticos al reaccionar con ésteres de aminoácidos. Estos ...
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(Pergamon Press, 1976)
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(Chile, Instituto de Investigaciones Agropecuarias, 1976)Una de las propiedades fisico-químicas más notables de los suelos chilenos derivados de cenizas volcánicas, es su extraordinaria habilidad para adsorver aniones, especialmente fosfato (Alamos, et al., 1967; Appelt, 1974; ...
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(Pergamon Press, 1977)Chiral amino acids bonded to copper(II) induce Cotton effects in the visible and UV regions corresponding tod-d and charge transfer transitions [1,2] but and induced Cotton effect on a distant ligand has not been observed ...
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(1978)Kinetic studies of the [Co(phen)3] (ClO4)3 2H2O nitromethane pyridine reaction were made spectrophotometrically, by recording the appearance of a new absorption band at 474 nm. The reaction is first order with respect to ...
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(Madrid, Dpto. de Investigaciones Bromatológicas. Consejo Superior de Investigaciones Científicas, 1978)The nutritive value of four important chileans industries of nonalcoholic beverage was studied. Differents kinds of beverages were analized in order to determine: moisture, ash, sugars and minerals: calcium, magnesium, ...