Browsing by Issue Date Artículos de revistas
Now showing items 1001-1020 of 2801
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(TAYLOR & FRANCIS LTD, 2003-08)Electron spin resonance (ESR) spectra of radicals obtained from two analogues of the antiprotozoal drug nifurtimox by electrolytic and Trypanosoma cruzi reduction were analyzed. The electrochemistry of these compounds was ...
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(LIPPINCOTT WILLIAMS & WILKINS, 2003-08)Genetic factors influence alcohol consumption and alcoholism. A number of groups have bred alcohol drinker and non drinker rat strains, but genetic determinants remain unknown. The University of Chile rat lines UChA (low ...
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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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(JOHN WILEY & SONS INC, 2003-08-22)To improve the compatibility and properties of blends based on high-density polyethylene (HDPE) and the ethylene-propylene copolymer (EPR), the functionalization of both through grafting with an itaconic acid derivative, ...
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(KLUWER ACADEMIC PUBL, 2003-09)The fast changes in chemical and biological properties of many coastal and inland waters in the last decades reflect the pressure of man on the environment. The surface waters of the Antarctic Peninsula, located far from ...
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(TAYLOR & FRANCIS LTD, 2003-09)The stabilized phosphorus ylides, Ph3P=C(CO.R')CO.OR, 1, R=Et, R' =CH2P+Ph3; 2, R=R'=Me; 3, R=Et, R'=Me; 4, R=Pr-i; R'=Me, 5, R=Bu-t; R'=Me, adopt a near planar conformation in the crystal which allows extensive electronic ...
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(EXCERPTA MEDICA INC, 2003-09-15)In patients with hypertension who have the DD-ACE genotype (higher angiotensin-converting enzyme [ACE] activity), plasma levels of angiotensin-(1-7) are 4 times lower than in patients with the II-ACE genotype (lower ACE ...
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(ELSEVIER SCI IRELAND LTD, 2003-09-18)The effect of perinatal asphyxia on brain development was studied with organotypic cultures from substantia nigra, neostriatum and neocortex. Asphyxia was induced by immersing foetuses-containing uterine horns removed from ...
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(PERGAMON-ELSEVIER SCIENCE LTD, 2003-09-19)Development and validation of an analytical UV derivative spectrophotometric method to quantify Losartan potassium used as a single active principle in pharmaceutical forms were done. Pharmacopeias have not yet provided ...
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(BLACKWELL MUNKSGAARD, 2003-10)The synthesis and crystal structures of three new yttrium crotonate (crot) compounds, associated with three different nitrogenous bases, namely 1,10-phenanthroline ( phen), 4-methyl-1,10-phenanthroline (mphen) and ...
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(BLACKWELL MUNKSGAARD, 2003-10)The structures of aquadichlorobis(1H-imidazole) cobalt(II), [CoCl2(Him)(2)(H2O)(2)] (Him is 1H-imidazole, C3H4N2), (I), and aquadichlorobis(1H-imidazole) nickel(II), [NiCl2( Him)(2)( H2O)(2)], ( II), are isomorphous and ...
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(GOVI-VERLAG GMBH, 2003-10)A validated HPLC method for the determination of ranitidine in human plasma is presented. Sulfanilamide as internal standard (IS) was used. Plasma samples were purified by solid phase extraction (SPE) using a copolymeric ...
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(AMER OIL CHEMISTS SOC A O C S PRESS, 2003-10)A central composite design 2(2) + star based on response surface methodology was used for development and optimization of a cultured goat cream butter formulation (cultured). The goat milk cream was inoculated with ...
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(ENDOCRINE SOC, 2003-10-01)Administration of estradiol valerate (EV) to adult rats leads to anovulation and cystic ovarian morphology. Sympathetic ovarian nerve denervation (SONX) overcomes this disruption. In this study, we determined whether EV ...
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(AMER SOC BIOCHEMISTRY MOLECULAR BIOLOGY INC, 2003-10-03)Cells adapt to hyperosmotic conditions by several mechanisms, including accumulation of sorbitol via induction of the polyol pathway. Failure to adapt to osmotic stress can result in apoptotic cell death. In the present ...
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Synthesis and unusual swelling behavior of combined cationic/non-ionic hydrogels based on chitosan (WILEY-V C H VERLAG GMBH, 2003-10-15)Hydrogel-forming copolymers based on chitosan grafted with different amounts of polyacrylamide were synthesized and its swelling capacity determined in distilled water, sodium chloride solutions, as well as in buffer ...
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(BLACKWELL MUNKSGAARD, 2003-11)The title compound, [Cu2Cl4(C5H5NO)(2)](n), is a one-dimensional polymer in which the Cu-II atoms are alternately bridged by two O atoms [Cu...Cu = 3.2131 (10) Angstrom] and two Cl atoms [Cu...Cu = 3.7061 (11) Angstrom]. ...
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(BLACKWELL MUNKSGAARD, 2003-11)The crystal and molecular structure of the monomeric title compound, chlorotetrakis(2-methylimidazole)copper(II) chloride, [CuCl(C4H6N2)(4)]Cl, is presented, and compared with those of two other closely related monomeric ...
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(TAYLOR & FRANCIS LTD, 2003-11)The diacyl ylide, 3-triphenylphosphoranylidene-2,4-pentanedione (2) can adopt conformations stabilized by ylidic resonance with both acyl oxygens syn- or with one oxygen syn- and the other anti- to cationoid phosphorus, ...
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(AOAC INTERNATIONAL, 2003-11)A derivative spectrophotometric method was developed to determine NO3--N in plant tissues. The method is based on measurement of the first-derivative spectrum of nitrosalicylic acid in basic solution. The nitrosalicylic ...
