Browsing by Title
Now showing items 18839-18858 of 91808
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(2004-05)En esta oportunidad abarcaremos el problema de conflictos de interés y teoría de agencia (Anexo 1) refiriéndonos en primer lugar al conflicto que surge cuando una empresa adquiere cierta participación en el patrimonio ...
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(Universidad de Chile, 2008)
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(EXPANSIVA, 2004)Hay dos razones por las que creemos que la adopción de tecnología debe ser el primer paso de nuestra política nacional de innovación. Primero, porque el tamaño de la brecha de ingresos entre los países desarrollados ...
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(Routledge, 2020)Aim: Flexible adjustment or accommodation to loss is healthy; however, little is known about how it can be achieved in old age. We sought to identify and characterize effective coping processes for achieving accommodation ...
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(Elsevier B.V., 2018)
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(Frontiers media SA, 2017)Many physiological adjustments occur in response to salt intake in several marine taxa, which manifest at different scales from changes in the concentration of individual molecules to physical traits of whole organisms. ...
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(SPRINGER, 2004-07)We investigated the phenotypic plasticity of renal function in three South American coastal passerine Cinclodes (ovenbirds) differing in the proportion of marine prey they consume. Individuals were acclimated to two regimes ...
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(Springer Verlag, 2004)We investigated the phenotypic plasticity of renal function in three South American coastal passerine Cinclodes (ovenbirds) differing in the proportion of marine prey they consume. Individuals were acclimated to two regimes ...
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(1990)Polypeptides rich in glutamic acid are strong inhibitors purified from isolated nuclei of Xenopus laevis oocytes of casein kinase II. The presence of tyrosine in these peptides greatly enhances their inhibitory capacity. ...
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(2009)Phenoxyethyl methacrylate (POEMA) and butyl methacrylate (BMA) were copolymerized by free-radical copolymerization using ,'-azobisisobutyronitrile (AIBN) in 2-butanone solution at 3331K. Copolymers were characterized by ...
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(2008)The free radical copolymerization of phenoxyethyl methacrylate (POEMA) and glycidyl methacrylate (GMA) was carried out using ,'-azobisisobutyronitrile (AIBN) in 2-butanone solution at 3331K. The copolymers were characterized ...
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(2010)Reaction of Cu(BF4)2 salt with the polymer [NP(OC6H4C(O)C–OC6H5)2]n (1) in THF affords three new polymers gels containing varied copper (II) ions contents, (2), (3), and (4). The nature of the copper (II) ions in the ...
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(2007)Evidence from several areas of neuroscience has led to the notion that copper and zinc could be modulators of neuronal excitability. In order to contribute to test this idea, we characterized the changes induced by these ...
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(ACADEMIC PRESS LTD ELSEVIER SCIENCE LTD, 2009-06)The purpose of this study was assessing Cu and Zn availabilities in soils amended with a biosolid through the determination of their sequentially extracted chemical forms and their relationship with the contents of these ...
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(American Society for Nutrition, 1996)Animal and human studies have shown that copper is involved in the function of several enzymes. Studies have also shown that copper is required for infant growth, host defense mechanisms, bone strength, red and white cell ...
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(KLUWER ACADEMIC PUBL, 1997-05)Copper mining activities are very important in central Chile. Like other metals, copper is a nutrient for most plants at low concentration levels; however, at higher levels it may become toxic. At present, copper abundance ...
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(2002)We have analyzed the distribution of copper concentrations, and the effects of anthropogenic inputs, in the components of two forest ecosystems using a comparative approach. Ecosystem components were defined using a ...
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(Electrochemical Soc, 2016)Impurities and additives play a key role in copper electrodeposition, in particular in upstream processes such as electrowinning or electrorefining. One common impurity is iron, mostly present as iron species Fe(II) in ...
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(CENIM, 2008-04)A two-compartment lab,scale reactive electrodialysis (RED) cell with a moving particulate cathode has been used for copper electrowinning. The cathodic reaction was copper electrodeposition on a bed of copper particles ...
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(Wiley & Sons, 2015)Copper, an ion with many important metabolic functions, has also been proposed to have a role as modulator on neuronal function, mostly based on its effects on voltage- and neurotransmitter-gated conductance as well as ...