Browsing by Issue Date Artículos de revistas
Now showing items 1381-1400 of 2801
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(JOHN WILEY & SONS INC, 2007-01)We studied the attraction between [C2Hn] and Tl(I) in the hypothetical [C2Hn-Tl](+) complexes (n = 2,4) using ab initio methodology. We found that the changes around the equilibrium distance C-Tl and in the interaction ...
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(JOHN WILEY & SONS INC, 2007-02-15)The purpose of this work was to study how mineral fillers would behave in a polypropylene (PP) matrix when PP modified with maleic anhydride (MA) and/or itaconic acid (IA) was used as a coupling agent in the preparation ...
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(ELSEVIER SCIENCE BV, 2007-02-18)We studied the attraction between [Pt(PH3)(3)] and the metals (Hg(0) and Au(-I)) in the hypothetical [Pt(PH3)(3)M] isoelectronic complexes using ab initio methodology. We found that the changes around the equilibrium ...
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(ELSEVIER SCIENCE INC, 2007-03-06)Meeting Abstract
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(PERGAMON-ELSEVIER SCIENCE LTD, 2007-04)Long chain aliphatic alcohols have been used as model compounds to develop a preparative method for a water-soluble material, which could be a carrier for triacontanol, a highly hydrophobic plant growth regulator. New ...
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(ELSEVIER IRELAND LTD, 2007-04)Treatment of hepatic microsomes with Fe3+/ascorbate activates UDP-glucuronyltransferase (UGT), a phenomenon totally prevented and reversed by reducing agents. At #2;M concentrations, iron and copper ions catalyze the ...
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(WILEY-V C H VERLAG GMBH, 2007-04)We report on the analytical performance of glassy carbon (GCE) electrodes modified with a dispersion of multiwall carbon nanotubes (CNT) in chitosan (CHIT) for the quantification of DNA. The electroanalytical response of ...
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(PERGAMON-ELSEVIER, 2007-04-20)The heterogeneous electron transfer reaction for the reduction of some nitroso aromatic derivatives in aqueous-alcoholic medium was studied on both mercury and glassy carbon electrodes (GCE) by using cyclic voltammetry ...
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(NATURE PUBLISHING GROUP, 2007-05)The reduction of intracellular 1,4,5-inositol trisphosphate (IP3) levels stimulates autophagy, whereas the enhancement of IP3 levels inhibits autophagy induced by nutrient depletion. Here, we show that knockdown of the ...
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(ELSEVIER SCIENCE BV, 2007-05)Successful trials with 5-chloro-7-iodo-8-hydroxyquinoline (clioquinol, CQ) for Alzheimer’s disease treatment prompted renewed interest in assessing whether its therapeutic action is related to the coordination of ...
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(PERGAMON-ELSEVIER SCIENCE LTD, 2007-05)The slightly water-soluble flavonoid quercetin (QUE) and its inclusion with either beta-cyclodextrin (beta CD), hydroxypropyl-beta-cyclodextrin (HP-beta CD) or sulfobutyl ether-beta-cyclodextrin (SBE-beta CD) were investigated. ...
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(PERGAMON-ELSEVIER SCIENCE LTD, 2007-05)The aim of this paper is to describe the inclusion properties and the factors affecting the complexation selectivity and stabilization of catechin (CA) into beta-cyclodextrin (beta-CD) and two of its derivatives, namely ...
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(JOHN WILEY & SONS INC, 2007-05)Ab initio calculations suggest that a series of complexes of type [Pt(PH3)(3)-MPH3](+) (M = Au, Ag, Cu) are stable. We found that changes around the equilibrium distance Pt-M and in the interaction energies are sensitive ...
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(PERGAMON-ELSEVIER SCIENCE, 2007-05-09)El mass spectra of products of the dihydropyridine Hantzsch synthesis using hydroxy and methoxy aldehydes as starting materials are reported. The reaction products (C-4 hydroxy- and methoxyphenyl-1,4-dihydropyridines and ...
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(ELSEVIER IRELAND LTD, 2007-05-30)Leaf extracts of Ugni molinae Turcz. (Myrtaceae) are used in Chilean folk medicine as analgesic and anti-inflammatory. The antinociceptive effect of dichloromethane (I)CM), ethyl acetate (EA) and methanol (ME) leaf extracts ...
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(PERGAMON-ELSEVIER SCIENCE LTD, 2007-06)The hybrid organo-inorganic compounds [Cu4(bipy)4V4O11(PO4)2]nH2O (n 5) (1), [Cu2(phen)2(PO4)(H2PO4)2(VO2) Æ 2H2O] (2) and [Cu2(phen)2(O3PCH2PO3)(V2O5) (H2O)]H2O (3) which present different bridging forms of the ...
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(TAYLOR & FRANCIS INC, 2007-06)The aim of this work was to develop prolonged diltiazem hydrochloride release matrices based on alginate-gelatin mixtures and establish the drug release mechanism. The erosion, swelling, and dissolution behavior of the ...
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(PERGAMON-ELSEVIER SCIENCE LTD, 2007-06-01)E)-Ethyl 3-(4-oxo-4H-chromen-3-yi)acrylate (3), (E)-3-(4-oxo-4H-chromen-3-yl)-2-propenenitrile (12) and their 5-hydroxy-derivatives 11 and 13 undergo alternative, solvent dependent, domino reactions with ethyl vinyl ether. ...
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(ELSEVIER SCIENCE, 2007-06-10)A different photophysical and photochemical behavior has been found between two second generation antihypertensive 1,4-dihydropyitidines (1,4-DHPs), felodipine and nimodipine. While nimodipine was observed as being more ...
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(PERGAMON-ELSEVIER SCIENCE, 2007-06-15)This work reports the electrochemical oxidation of three newly synthesized C4-hydroxyphenyl-substituted 1,4-dihydropyridine derivatives in dimethylsulfoxide. The reactivity of the compounds with ABAP-derived alkylperoxyl ...