Browsing by Title Artículos de revistas
Now showing items 2232-2251 of 2801
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(AOAC INTERNATIONAL, 2002-07)This paper reports a simple and fast method for the simultaneous determination of estradiol (ED) and medroxyprogesterone acetate (MP) in pharmaceutical formulations by second-derivative spectrophotometry. Methanol was used ...
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(SOC CHILENA QUIMICA, 2008-09)This study describes the fast and simultaneous determination of glutathione and glutathione disulfide by Capillary Zone Electrophoresis in plant extracts of shoot and root of tomato plants. Frequent use of acidic precipitation ...
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(MARCEL DEKKER INC, 2002)A simultaneous microdetermination of iron and copper at sub-mug/L level by solid phase derivative spectrophotometry has been developed. The compounds TPTZ (2,4,6-tripyridyl-,3,5-triazine) and Neocuproine (2,9-dimethyl-1, ...
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(ELSEVIER SCIENCE BV, 2002-12)A new method for the simultaneous determination of iron and ruthenium at ultra-trace levels is proposed. The method is based on the formation of the iron and ruthenium complexes with 2,4,6-tri-(2-pyridil)-1,3,5-triazine ...
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(PERGAMON-ELSEVIER SCIENCE, 2001-12)A gas chroma tographic-mass spectrometric (GC-MS) method for the qualitative and quantitative determination of melatonin plus pyridoxine commercial tablets is described. Melatonin and pyridoxine were simultaneously determined ...
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(KLUWER ACADEMIC PUBL, 2002-06)A first derivative spectrophotometric method has been developed for the determination of parathion and p-nitrophenol in vegetable tissues. Ethanol was used as solvent for extracting the compounds from the tissues and ...
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(Marcel Dekker Inc., 2000)A second derivative spectrophotometric method has been developed for the determination of palladium and platinum in mixtures. The method is based on the formation of the platinum and palladium complexes with 3-(2- ...
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(2012)Introduction: Acidic and metal(oid)-rich topsoils resulted after 34 years of continuous operations of a copper smelter in the Puchuncaví valley, central Chile. Currently, large-scale remediation actions for simultaneous ...
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(Elsevier B.V., 2010)An analytical methodology based on differential pulse voltammetry (DPV) on a glassy carbon electrode and the partial least-squares (PLS-1) algorithm for the simultaneous determination of levodopa, carbidopa and benserazide ...
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Simvastatin disrupts cytoskeleton and decreases cardiac fibroblast adhesion, migration and viability (Elsevier, 2012)Statins reduce the isoprenoids farnesyl and geranylgeranyl pyrophosphate, essential intermediates, which control a diversity of cellular events such as cytoskeleton integrity, adhesion, migration and viability. Cardiac ...
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(2012)EPR measurements have been performed on single crystals of [Cu(L-tyrosine)2]az at 33.8 GHz and at room temperature. The EPR spectra display partially resolved EPR lines for most orientations of the magnetic field in the ...
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(Wiley, 2017)BiP (Immunoglobulin Binding Protein) is a member of the Hsp70 chaperones that participates in protein folding in the endoplasmic reticulum. The function of BiP relies on cycles of ATP hydrolysis driving the binding and ...
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(2007-07)Detection of singlet oxygen emission, lmax = 1270 nm, following laser excitation and steady-state methods were employed to measure the total reaction rate constant, kT, and the reactive reaction rate constant, kr, for the ...
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(Sociedad Chilena de Química, 1999)En este trabajo se propone un método para determinar cobre a bajos niveles de concentración empleando una configuración de flujo continuo que permite la automatización de la etapa de extracción líquido-líquido, mediante ...
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(Sociedad Chilena de Cardiología y Cirugía Cardiovascular, 2001)Los cardiomiocitos son células terminalmente diferenciadas que cesan de dividirse inmediatamentre despúes del nacimiento. Esto hace del corazón un órgano muy vulnerable a eventos isquémicos, tóxicos e inflamatorios. La ...
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(Colegio de Farmacéuticos de la Provincia de Buenos Aires, 2004)En este trabajo se hace una revisión de los sistemas matriciales en lo que concierne a su formulación, concepción, diseño y sus propiedades biofarmacéuticas. Estos sistemas se caracterizan por retardar y regular la ...
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(Sociedad Chilena de Química, 1998)En este trabajo se desarrolla un método de análisis por inyección de flujo (FIA) para la determinación de ranitidina en formas farmacéuticas y orina, empleando una celda de flujo polarográfica como sistema de detección, ...
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(Sociedad Chilena de Química, 1980)El estudio químico y espectroscópico de los acil etoxicarbonil metilidentrifenilofosforanos I, revela que son compuestos extraordinariamente estables (1). En este trabajo se informa la síntesis de una serie de ílidos ...
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(Centro de Perfeccionamiento, Experimentación e Investigaciones Pedagógicas (Chile), 1979)No tiene