Browsing by Title Artículos de revistas
Now showing items 2739-2758 of 2801
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(Chile, Instituto de Investigaciones Agropecuarias, 1953)El presente trabajo ha sido motivado por la importancia que tiene que llevar al conocimineto del contenido vitamínico de algunos cereales cultivados en el país, que sirven de base a la alimentación animal. Las determinaciones ...
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(Chile, Ministerio de Agricultura - Instituto de Investigaciones Veterinarias, 1952)De los diferentes métodos que se emplean para la valoración de la riboflavina en productos alimenticios, se distinguen tres por sus resultados mas homogéneos y satisfactorios: el fluorimétrico, el microbiológico y el animal ...
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(AMER CHEMICAL SOC, 1998-07-10)
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(Sociedad Chilena de Cardiología y Cirugía Cardiovascular, 2001)El proyecto Genoma Humano ha logrado descifrar la secuencia completa del genoma, aportando una herramienta única para el estudio de la genética humana. Sin embargo, se ha observado cada vez más frecuentemente la aparición ...
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(Elsevier, 2018-06)Eighteen alkaloids were detected in the bark, leaves, wood and roots of Peumus boldus, including traces of secoboldine, N-methylsecoboldine (boldine methine), glaucine and norreticuline, not reported previously as constituents ...
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(2003)Data is presented on the quenching of 9,10-dicyanoanthracene by benzene derivatives in acetonitrile. The quenching occurs via a charge transfer mechanism with the quenching rate constants exhibiting a Rehm-Weller dependence ...
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(SOC CHILENA QUIMICA, 2007-09)The aim of this work is based in the reduction of independent variables in multivariate regression analysis to one by means a vector dot product (E-3). By this way, it is omit the orthogonalized procedure to obtained valid ...
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(NATURAL PRODUCTS INC, 2008)The structural elucidation of natural products and complex organic molecules relies heavily on the application of proton detected heteronuclear NMR. Among these techniques, the HMBC NMR experiment remains as the most popular ...
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(Elsevier Ltd, 2019)Carminic acid (CA) contained in one kind of gummy candy was detected and quantified by using vibrational and electronic spectroscopy, respectively; the proposed methodology in solution is simple and rapid without sample ...
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(1981)The IR and Raman spectra of solid diamminemercury(II) chloride with 14N/15N and H/D isotopic substitution have been measured. The spectra have been interpreted assuming D3d symmetry for the [Hg(NH3)2]2+ cations which have ...
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(1996)FT-IR and FT-Raman spectra of Caulerpin, a green algae pigment, have been recorded. An assignment of the observed bands is proposed on the basis of previously reported vibrational spectra of similar structures. Intensity ...
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(Elsevier B.V., 2019)Silicic systems generate the most explosive eruptions on Earth. In contrast to basaltic systems, they can accumulate large volumes of magma without systematically erupting, confronting the classical interpretation that a ...
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(ELSEVIER SCI LTD, 2002-12)The viscoelastic relaxations of four copolymers of ethylene and I-octadecene, with different comonomer contents, synthesized with a metallocene catalyst, have been analysed and compared to those of the corresponding ...
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(Sociedad Chilena de Tecnología de Alimentos, 1990)A través de la historia, los gobiernos han realizado una función importante en la protección de los alimentos, controlando las adulteraciones, contaminaciones, alteraciones y rotulaciones inadecuadas. desde tiempos remotos ...
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(Hindawi Publishing, 2015)Maintaining the identity of Foxp3+ regulatory T cells (Tregs) is critical for controlling immune responses in the gut, where an imbalance between Tregs and T effector cells has been linked to inflammatory bowel disease. ...
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(Sociedad Española de Cardiología, 2005)La guanosina trifosfatasa pequeña Rho y su blanco Rho-cinasa desempeñan un papel importante en la regulación de la presión arterial y en la contracción de la musculatura lisa vascular. Diversos agonistas de los receptores ...
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(Frontiers Media, 2016)Abiotic stress has a growing impact on plant growth and agricultural activity worldwide. Specific plant growth promoting rhizobacteria have been reported to stimulate growth and tolerance to abiotic stress in plants, and ...
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(2001)Melatonin and Vitamin B6 can be oxidized at the glassy carbon electrode showing well-resolved anodic peaks by differential pulse voltammetry. Vitamin B6 shows an oxidation peak potential of about 650 mV vs Ag/AgCI in ammonia ...
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(1986)Trazodone, a triazolopyridine derivative with antidepressant activity, is irreversibly oxidized in two steps in a large range of scan rates. The first peak shows a linear dependence on trazodone concentration. This behaviour ...
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Voltammetric behavior and analytical applications of lomefloxacin, an antibacterial fluorquinolone (AOAC INTERNATIONAL, 2001-05)Lomefloxacin was reduced on a dropping mercury electrode, producing one or more peaks, depending on the pH of the aqueous medium. Coulometric measurements gave an experimental value of 1 electron for the main peak. ...
