Browsing by Issue Date Artículos de revistas
Now showing items 1081-1100 of 2801
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(PERGAMON-ELSEVIER SCIENCE, 2004-05-01)A series of eight commercial C-4 substituted 1,4-dihydropyridines and other synthesized related compounds were tested for direct potential scavenger effect towards alkylperoxyl radicals and ABTS radical cation in aqueous ...
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(ELSEVIER SCI LTD, 2004-05-11)Homogeneous transparent hybrid films consisting of chitosan (CHI), poly(monomethyl itaconate) (PMMI) and silica were obtained indicating the absence of microphase separation. These ternary hybrid materials are very interesting ...
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(SOCIEDAD CHILENA DE QUIMICA, 2004-06)Mixed bis-phenanthroline Co(III) complexes with amino sugars disproportionate over a period of months, giving non-ionic tris(aminosugar)complexes. The complex with alpha-D-glucosamine has the Lambda-configuration with ...
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(SAGE PUBLICATIONS LTD, 2004-06)Combined processes effects of osmotic dehydration in sucrose solutions and freezing on apple cubes preservation were analysed. Two multifactorial experimental designs, in two levels, were conducted consecutively to quantify ...
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(SOCIEDAD CHILENA DE QUIMICA, 2004-06)Hybrid nanocomposites based on siloxane sols, chitosan and poly(monomethyl itaconate) (PMMI) as organic polymer counterparts were prepared. Tetraethyl ortosilicate was used as inorganic network fort-ning reagent that was ...
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(MARCEL DEKKER INC, 2004-06)Copper (Cu) mining activities are very important in central Chile. The present study consists in determining the distribution and availability of copper, arsenic (As), and lead (Pb) in soils near a smelting facility, in ...
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(DUSTRI-VERLAG DR KARL FEISTLE, 2004-06)Introduction: A cascade of pathophysiological events occurs with the ascension to high altitude (H). We have performed studies on the effects of exposure to H on the pharmacokinetics of drugs. The hypothesis behind these ...
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(ACADEMIC PRESS INC ELSEVIER SCIENCE, 2004-06-01)Although it is well established that both follicular assembly and the initiation of follicle growth in the mammalian ovary occur independently of pituitary hormone support, the factors controlling these processes remain ...
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(BioMed Central Ltd., 2004-06-04)Arabidopsis thaliana copper metallochaperone CCH is a functional homologue of yeast antioxidant ATXI, involved in cytosolic copper transport. In higher plants, CCH has to be transported to specialised cells through ...
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(ACADEMIC PRESS INC ELSEVIER SCIENCE, 2004-07)Leukoaminochrome o-semiquinone radical is generated during one-electron reduction of dopamine oxidation product aminochrome when DT-diaphorase is inhibited. Incubation of 100 muM aminochrome with 100 muM dicoumarol, an ...
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(MARCEL DEKKER INC, 2004-07)We report here the synthesis of substituted 4-chloro-N-[3-oxo-3-(4-aryl-1-piperazinyl)-propyl] benzamides (5-9), as potential new antidepressants, incorporating in a single molecule structural moieties related to a dual ...
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(TAYLOR & FRANCIS, 2004-07)In the present paper, a direct quenching of radical species by a number of synthesized nitrosoaryl 1,4-dihydropyridines and their parent nitroaryl 1,4-dihydropyridines was determined in aqueous media at pH 7.4. These two ...
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(2004-07)The alkaline single-cell gel electrophoresis (SCGE) assay, also called the comet assay, is a rapid and simple method for the detection of DNA damage in individual cells. The objective of this study was to establish if ...
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(AMER CHEMICAL SOC, 2004-07-06)The structure and aggregation number of a discotic lyotropic liquid crystal, prepared from tetradecyltrimethylammonium chloride (TDTMACI)/decanol (DeOH)/NaCI/H2O, have been examined using fluorescence quenching of pyrene ...
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(AMER CHEMICAL SOC, 2004-07-23)The efficient synthesis of tetrapeptide 5 containing, in alternation, cyclobutane and beta-alanine residues is described. NMR experiments both at low temperature in CDCl3 and at 298 K in DMSOd(6) solutions show the ...
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(TAYLOR & FRANCIS LTD, 2004-08)The synthesis and phase characterization of three homologous series of liquid crystalline acrylic and methacrylic monomers, consisting of 21 new compounds are presented. They are based on omega-hexyloxy- and omega-undecy ...
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(ACADEMIC PRESS LTD ELSEVIER SCIENCE LTD, 2004-08)A standard aqueous extract of Mangifera indica L., used in Cuba as an antioxidant under the brand name of VIMANG(R), was tested in vivo for its anti-inflammatory activity using commonly accepted assays. M. indica extract, ...
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(ELSEVIER SCIENCE SA, 2004-08-01)The system of I-octanol-beta-cyclodextrin in 0.5 M HClO4 at Pt electrodeposited on an Au/quartz crystal (Pt/Au/Q) has been studied by cyclic voltammetry (CV), the electrochemical quartz crystal microbalance (EQCM) and ...
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(SOCIEDAD CHILENA DE QUIMICA, 2004-09)Polymeric liquid membranes are prepared using 3-nitro-o-xylene (NOX), tri-butylphosphate (TBP), bis-(2-ethylhexyl) sebacate (DOS), o-nitrophenyloctyl ether (o-NPOE), tris-2-ethylhexylphosphate (TEHP), dioctylphthalate (DOP) ...
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(Dustri-Verlag Dr Karl Feistle, 2004-09)Correction