Browsing by Issue Date Artículos de revistas
Now showing items 661-680 of 2801
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(PERGAMON-ELSEVIER SCIENCE LTD, 1999-03-26)There is some evidence that cardiac rather than circulating insulin-like growth factor-1 (IGF-1) levels contribute to the development of renovascular hypertensive left ventricular hypertrophy (LVH), remaining unknown the ...
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(JOHN WILEY & SONS LTD, 1999-04)The regiosomeric quinones 5-acetyloxymethyl-4,4,8-trimethyl- (5) and 8-acetyloxymethyl-4,4,5-trimethylanthracene-1,9,10(4H)-trione (6) were synthesized and their regiochemistry was assigned on the basis of the unambiguous ...
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(HUMANA PRESS INC, 1999-04)A 3-wk period of stress promotes the development of ovarian cysts in rats apparently mediated by increased sympathetic nerve activity and ovarian steroid secretion. After 11 wk of stress, these parameters are indistinguishable ...
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(HETERO CORPORATION, 1999-05)New 4-Aryl-6-methyl-8-phenyl-2,3-dihydropyrazolo[3,4-b]diazepines and 4-aryl-8-methyl-6-phenyl-2,3-dihydropyrazolo[4,3-b]diazepines were obtained from the reaction of 4,5-diamino-3-methyl-1-phenylpyrazole 1 with one ...
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(IST CHIMICA AGRARIA, UNIV PISA VIA S MICHELE DEGLI SCALZI, 1999-05)The content and the chemical forms of chromium, copper, nickel and zinc in allophanic and montmorillonitic soils, one of them irrigated exclusively with untreated sewage waters, were studied. To gain information about the ...
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(MARCEL DEKKER INC, 1999-05)Different chemical forms of cadmium (Cd), cobalt (Co), chromium (Cr), copper (Cu), lead (Pb), nickel (Ni), and zinc (Zn) were determined in agricultural soils cultivated with lettuce and celery. These soils have been ...
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(ELSEVIER SCIENCE, 1999-05-14)The electrochemical reduction of a series of beta-nitrostyrene and beta-methyl-beta-nitrostyrene derivatives: by tast and differential pulse polarography and cyclic voltammetry over a wide pH range was studied. The reduction ...
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(ELSEVIER SCIENCE INC, 1999-07)The aim of this study was to estimate the prevalence of the different alleles of the angiotensin converting enzyme (ACE) gene insertion/deletion (I/D) polymorphism and associated plasma ACE activity, as well as cardiac ...
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Rise in endothelium-derived NO after stimulation of rat perivascular sympathetic mesenteric nerves (AMER PHYSIOLOGICAL SOC, 1999-09)To evaluate whether sympathetic activity induces nitric oxide (NO) production, we perfused the rat arterial mesenteric bed and measured luminally accessible norepinephrine (NE), NO, and cGMP before, during, and after ...
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(ROYAL SOC CHEMISTRY, 1999-09-07)Three new copper(II) complexes with simple pyrazolate bridges have been prepared, [Cu-2(pz)(2)(dpa)(2)(H2O)Cl]Cl . H2O 1, [Cu-2(pz)(2)(phen)(2)Cl-2]. 2C(2)H(5)OH 2 and [Cu-2(pz)(phen)(2)Cl-3]. 2H(2)O 3 (Hpz = pyrazole, dpa ...
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(WILEY-V C H VERLAG GMBH, 1999-11)A flavoenzyme cytochrome c reductase NAD(P)H mixture has been used to modify a carbon paste electrode. The modified electrode was characterized by cyclic voltammetry varying the scan rate and temperature. Cathodic and ...
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(GEORG THIEME VERLAG, 1999-12)The effective synthesis of a variety of bisthiourea-bridged calix[4]arenes substituted by carbohydrates units (D-glucose, D-mannose, D-galactose and lactose) at the narrow rim by reaction of bis(aminoethoxy)calix[4]arene ...
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Voltammetric behaviour of clonixin and its differential pulse polarographic determination in tablets (MARCEL DEKKER INC, 2000)Clonixin, a non-steroid analgesic, can be both reduced at the mercury electrode and oxidised at the glassy carbon electrode. The anodic response shows well-defined waves in a pH range between pH 2-12. The polarographic ...
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(FREUND PUBLISHING HOUSE LTD, 2000)The reaction of 4-amino-3-aryl-5-benzylaminopyrazoles (1a,b) with 3-dimethylaminopropiophenones (2) in ethanol with acetic acid gave 1-benzyl-4,6-diaryl-2,3-dihydropyrazolo[3,4-b] [1,4]diazepines (3a-h). The structure ...
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(Sociedad Latinoamericana de Nutrición, 2000)En el último tiempo se ha puesto un gran énfasis en el c.'<1udiode la presencia de ácidos grasas potiins3turados de Ja familia omega~3 en aJimentos de origen marino. debido a sus efectos beneficiosos descritos en relación ...
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(Sociedad Chilena de la Ciencia del Suelo, 2000)Entre los principales intereses mundiales hoy se tiene la gran conciencia del resguardo y recuperación de nuestros principales recursos naturales, entre los cuales es fundamental el sistema edáfico. Los suelos, con fines ...
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Efecto de la hormona liberadora de tirotrofina (TRH) en la secreción de prolactina de decidua humana (Sociedad Chjilena de Obstetricia y Ginecología, 2000)Para prevenir el Síndrome de Distress Respiratorio (RDS), se ha usado el tratamiento conjunto de betametasona y hormona liberadora de tirotrofina (TRH). La TRH actuaría indirectamente sobre la producción del surfactante ...
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(Aspen Publishers, 2000)Se emple6 pasta fresca de jurel (T. 11/lIrphyi) sin congelar tipo surimi, que se sometió al proceso de asentamiento en presencia de KCI (2 C1c). Conjuntamente, la pasta fue sometida a ciclos distintos de aplicaci6n de ...
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(Universidad de Chile, 2000)
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(Sociedad Chilena de Cardiología y Cirugía Cardiovascular, 2000)El objetivo del estudio fue estimar la prevalencia de los distintos alelos del polimorfismo del gen de la enzima convertidora de angiotensina (ECA), inserción/deserción (I/D) y simultáneamente la actividad de ECA plasmática ...