Browsing by Issue Date Artículos de revistas
Now showing items 1101-1120 of 2801
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(SPRINGER, 2004-09)
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(SPRINGER HEIDELBERG, 2004-09)A rapid and simple method has been developed for determination of inorganic elements in airborne particulate matter (PM10) by using acidified subcritical water and ICP-OES. Elements such as Al, As, B, Ba, Cd, Cu, Fe, Mn, ...
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(AMER SOC MICROBIOLOGY, 2004-09)For some bacteria and algae, it has been proposed that inorganic polyphosphates and transport of metal-phosphate complexes could participate in heavy metal tolerance. To test for this possibility in Acidithiobacillus ...
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(SOCIEDAD CHILENA DE QUIMICA, 2004-09)Deuterium quadrupole splittings, of deuterated water, Deltav, in anionic discotic nematic lyomesophases are always much larger than in cationic mesophases. To explore the possible origins of this difference, Deltav and T-1 ...
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(PERGAMON-ELSEVIER SCIENCE LTD, 2004-09-15)The in vitro growth inhibition activity of new thiosemicarbazone derivatives against the protozoan parasite Trypanosoma cruzi, the causative agent of American trypanosomiasis, are described. The designed compounds combine ...
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(KLUWER ACADEMIC/PLENUM PUBL, 2004-10)Purpose. To study the reactivity of C4-substituted 1,4-dihydropyridines (1,4-DHP), with either secondary or tertiary nitrogen in the dihydropyridine ring, toward SIN-1-derived peroxynitrite in aqueous media at pH 7.4. Methods. ...
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(PERGAMON-ELSEVIER SCIENCE, 2004-10-30)A detailed study was done of the electrochemical oxidation of some 1,4-dihydropyridine (1,4-DHP) derivatives in order to determine the influence of the substituents in the heterocyclic ring. Two types of derivatives were ...
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(EDICIONES DOYMA S/L, 2004-11)Introduction and objective. Carvedilol is an antioxidant and adrenergic antagonist with demonstrated benefits in terms of mortality from heart failure (HF). The aim of the present study was to evaluate clinical parameters, ...
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(AOAC INTERNATIONAL, 2004-11)A new method for the sequential determination of attapulgite and nifuroxazide in pharmaceutical formulations by first- and second-derivative spectrophotometry, respectively, has been developed. In order to obtain the optimal ...
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(JOHN WILEY & SONS LTD, 2004-11)Toxic effects of several nitro-aryl drugs are attributed to the nitro-reduction that may be suffered in vivo, a reaction that may be catalysed by different reductases. One of these enzymes is NADPH-cytochrome P450 reductase, ...
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(PRESTON PUBLICATIONS INC, 2004-11)Tamoxifen is an antiestrogen used in the adjuvant endocrine therapy of early breast cancer and malignant breast disorders. It is also used in women with anovulatory infertility caused by its stimulating effect on the ...
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(ELSEVIER SCIENCE SA, 2004-11-01)Detection of O2(1 g) emission, λmax = 1270 nm, following laser excitation and steady-state methods were employed to measure total reaction rate constants, kT, for the reaction between singlet oxygen and the antimalarial ...
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(ELSEVIER SCIENCE BV, 2004-11-01)The formation of polymeric hybrid materials of siloxanes with gelatin (GE) starting from sodium metasilicate as the silica source, and their transformation into silica under different conditions have been studied. ...
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(WILEY-V C H VERLAG GMBH, 2004-11-04)Ferroelectricity can be defected in systems consisting of liquid-crystal line monomer-polymer mixtures possessing no chiral centers The ferroelectric behavior in mixtures of achiral liquid-crystalline side-chain polymers ...
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(SOCIEDAD CHILENA DE QUIMICA, 2004-12)The presence of high concentrations of arsenic and copper was determined in most of the environmental matrixes under study (river water, river sediments, and soils), which suggests a real impact of the copper mining activity ...
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(ELSEVIER SCIENCE SA, 2004-12-01)Three lipid-soluble furan derivatives, 2,5-disubstituted with different n-alkyl chains, and a terminal trimethylammonium group were obtained by reaction of a metalated monoalkylfuran with alkyl dihalides under conditions ...
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(Sociedad Chilena de Cardiología y Cirugía Cardiovascular, 2005)Hemos descrito un incremento en el estrés oxidativo (EO) en pacientes con síndrome coronario agudo (SCA), relacionado con el fenómeno de isquemia-reperfusión. La inflamación es otra potencial fuente de especies reactivas ...
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(TAYLOR & FRANCIS INC, 2005)The synthesis of new eight-membered cycle dibenzo[b,f][1,5]-diazocine-6(5H)-one derivatives 11, 12 was developed. The key step in this synthesis was the intramolecular cyclization of the amino aldehyde precursors 9,10 ...
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(Sociedad Chilena de Cardilología y Cirugía Cardiovascular, 2005)Los polimorfismos de los receptores β Adrenérgicos (AR) influencian el grado de actividad del receptor. Los βAR tienen un rol importante en la regulación de la contractilidad y podrían tener implicancias en el riesgo de ...
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(Lippincott Williams & Wilkins, 2005)Dependence on alcohol, a most widely used drug, has a heritability of 50-60%. Wistar-derived rats selectively bred as low-alcohol consumers for many generations present an allele (Aldh22) of mitochondrial aldehyde ...
