Browsing by Title Facultad de Ciencias Químicas y Farmacéuticas
Now showing items 4675-4694 of 4842
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(2011)In this paper, the uptake of Cu(II) ions from an acidic aqueous solution using a continuous column packed with microcapsules containing the chelating extractant LIX-860 N-IC was examined. A simple, economical method was ...
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(1980)Urease (EC 3.5.1.5) was purified from Spirulina maxima by ammonium sulfate precipitation, DEAE-cellulose chromatography and gel filtration on Sephadex G-200. The enzyme had maximum activity at pH 8.7, a Km for urea of 0.12 ...
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(OXFORD UNIV PRESS, 2008-12)
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(PROUS SCIENCE, SA, 1998-03)Acetazolamide is recommended for the prophylaxis of acute mountain sickness symptoms which sets in on climbing to high altitudes (H) above 2,500 m. It is primarily excreted unchanged in urine. In a previous study, we ...
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(1986)An HPLC method described by Mancllla and Gll [Analytical Letters 17,(B9),1984,873-886] has been applied to study the sex dependent expression of several rat liver testosterone hydroxylases. A sample clean up procedure has ...
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(Elsevier Inc., 2016)© 2016 Elsevier Inc.The use of bacterial cells to produce fluorescent semiconductor nanoparticles (quantum dots, QDs) represents a green alternative with promising economic potential. In the present work, we report for the ...
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(Elsevier, 2016)The use of bacterial cells to produce fluorescent semiconductor nanoparticles (quantum dots, QDs) rep-resents a green alternative with promising economic potential. In the present work, we report for thefirst time the ...
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(2009)Limiting amino acids of the protein from chilean "algarrobo" are isoleucine, theronine and methionine/cyteine. Cereals and legume blends allow to improve the amino acid balance, since legume have more lysine, and cereals ...
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(PERGAMON-ELSEVIER SCIENCE LTD, 2003-08)The high-affinity (K-M < 1 muM) mitochondrial class 2 aldehyde dehydrogenase (ALDH2) metabolizes most of the acetaldehyde generated in the hepatic oxidation of ethanol. H4-II-E-C3 rat hepatoma cells have been found to ...
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(ELSEVIER SCIENCE BV, 2002-11-15)Sixty-three pregnant llamas of known breeding date were used in this study. Forty-six of them were submitted to surgery between 186 and 320 days of gestation (52-91% of average gestation period, respectively). Under general ...
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(WILEY-V C H VERLAG GMBH, 2006-08-07)Functionalized metallocene copolymers synthesized from ethylene with 5-hexen-1-ol and ethylene with 10-undecen-1-ol were used as compatibilizers in LDPE/starch and LDPE/dextran blends in order to improve the interfacial ...
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(Mary Ann Liebert, 2009)All engineered bioartificial structures developed for tissue regeneration require oxygen and nutrients to establish proper physiological functions. Aiming to improve vascularization during dermal regeneration, we combined ...
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(2010)Pretreatment of lignocellulosic materials is an important step to achieve higher amounts of simple sugars, mono- and disaccharides, for obtaining ethanol as a biofuel, via enzymatic hydrolysis. The study introduces a concept ...
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(BENTHAM SCIENCE PUBL LTD, 2001-03)The structural elucidation of complex organic molecules relies heavily on the application of proton detected heteronuclear NMR. Among these techniques, the HMBC NMR experiment is probably the most useful 2D NMR method The ...
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(2001)The structural elucidation of complex organic molecules relies heavily on the application of proton detected heteronuclear NMR. Among these techniques, the HMBC NMR experiment is probably the most useful 2D NMR method. The ...
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(WILEY-V C H VERLAG GMBH, 2003-11-24)The use of grafted poly(propylene) (PP) and a random copolymer of ethylene and propylene (EPR) with an itaconic acid derivative, monomethyl itaconate (MMI), as compatibilizer for PP/EPR blends was analyzed. The grafting ...
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(WILEY-V C H VERLAG GMBH, 2006-08-02)Functionalized PP samples with different percentages of grafted IA, i.e., 0.7, 1 or 1.8 wt.-%, with similar molecular weights were used as compatibilizers in PP/clay nanocomposites. PP nanocomposites containing 1 wt.-% of ...
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Use of Pyrogallol Red and Pyranine as Probes to Evaluate Antioxidant Capacities towards Hypochlorite (2013)Hypochlorite is a strong oxidant able to induce deleterious effects in biological systems. The goal of this work was to investigate the use of PGR and PYR as probes in assays aimed at evaluating antioxidant activities ...