Browsing by Issue Date Artículos de revistas
Now showing items 981-1000 of 2801
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(SOC PLASTICS ENG INC, 2003-04)New types of compatibilizers based on functionalized polypropylene (PP) were synthesized by radical melt grafting either with monomethyl itaconate or dimethyl itaconate. The effect of these new modified PP compounds were ...
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(KARGER, 2003-04)We studied the effect of thyrotropin-releasing hormone (TRH) applied centrally on the sympathetic activity of the ovary in female rats. Intracerebroventricular (i.c.v.) administration of a dose of 25 ng/kg weight produced ...
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(ELSEVIER SCIENCE SA, 2003-04-01)Seven types of ion-selective chemical sensors based on poly(vinyl chloride) (PVC) as polymeric membrane, for determination of nitrate ion, have been prepared by using 3-nitro-o-xylene (NOX), tributylphosphate (TBP), ...
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(PERGAMON-ELSEVIER SCIENCE LTD, 2003-04-03)Azorella compacta, Azorella yareta and Laretia acaulis (Apiaceae) are native species from the high Andes Mountains, northeastern Chile, and they have being traditionally used to treat asthma, colds and bronchitis, illnesses ...
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(ELSEVIER SCIENCE BV, 2003-04-10)This is a report on the extraction of molybdenum(VI) ions using a supported liquid membrane, prepared by dissolving in kerosene, the extractant Alamine 336 (a long-chain tertiary amine) employed as mobile carrier. A flat ...
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(AMER CHEMICAL SOC, 2003-04-15)Potassium ferricyanide ([Fe(CN)(6)](3-)) reduction and ferrocenemethanol (Fe-OH) oxidation at a beta-cyclodextrin (beta-CD)-modified gold electrode were investigated by cyclic voltammetry (CV) and scanning electrochemical ...
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(AMER CHEMICAL SOC, 2003-04-18)Detection Of O-2((1)Delta(g),) phosphorescence emission, lambda(max) = 1270 nm, following laser excitation and steady-state methods was employed to determine the total rate constant, k(T), and the chemical reaction rate ...
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(ELSEVIER SCIENCE BV, 2003-04-25)In the present work the efficiency of water under subcritical conditions for the extraction of pesticides having a broad spectrum of polarities from soils was evaluated. The pesticides under study were carbofuran, ...
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(DUSTRI-VERLAG DR KARL FEISTLE, 2003-05)Introduction: Exposure of the human body to high altitude causes a number of physiological changes. In previous studies, we observed that these changes may alter the pharmacokinetics of drugs. The number of erythrocytes/mm(3) ...
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(TAYLOR & FRANCIS LTD, 2003-05)The synthesis and measurement of thermodynamic properties of six methacrylate-based polymers were undertaken to observe the relationship between structural aliphatic features and mesophase properties. X-ray measurements ...
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(TAYLOR & FRANCIS LTD, 2003-05)The collagenous extracellular matrix (ECM) forms a stress-tolerant network that is essential for proper function of the vertebrate heart. Profound changes have been detected in the interstitial ECM concurrent with developmental ...
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(PERGAMON-ELSEVIER SCIENCE LTD, 2003-05)Comparative studies of intrinsic and extrinsic fluorescence of apyrases purified from two potato tuber varieties (Pimpernel and Desiree) were performed to determine differences in the microenvironment of the nucleotide ...
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(PERGAMON-ELSEVIER SCIENCE LTD, 2003-05-09)The tropical spastic paraparesis or human T-cell lymphotropic virus associated myelopathy (TSP/HAM), has been related with an overexpression of matrix metalloproteinases (MMPs), especially MMP-9. Initial studies of reverse ...
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(SOC STUDY REPRODUCTION, 2003-06)We studied the effects of a chronic intermittent cold stress regime on sympathetic nerve activation and ovarian physiology. This paradigm (4degreesC for 3 h/day, Monday-Friday, for 3 or 4 wk) does not affect basal plasma ...
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(SOCIEDAD CHILENA DE QUIMICA, 2003-06)This work presents two new topological indices, C(u) and C-A(u), that permit their application to organic molecules containing oxygen, nitrogen, sulfur and halogens. These indices are obtained by modifying Schultz molecular ...
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(ELSEVIER SCIENCE, 2003-06-05)A detailed investigation on the electrochemical reduction of oxygen was carried out using cyclic voltammetry at a glassy carbon electrode in dimethylsulphoxide (DMSO) containing 0.1 M tetrabutylammonium. perchlorate (TBAP) ...
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(AMER CHEMICAL SOC,, 2003-07-02)Two amaranth glutelin preparations, Gt-bo extracted with borate buffer at pH 10 and Gt-na extracted with 0.1 N NaOH, were characterized and compared with the amaranth polymerized 11 S globulin (Gp, globulin-P). Gt-bo and ...
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(EXCERPTA MEDICA INC, 2003-07-15)
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(PERGAMON-ELSEVIER SCIENCE, 2003-07-15)A detailed investigation on the electrochemical oxidation of some Hantzsch 1,4-dihydropyridine derivatives with the aim of study the influence of the hydrogen substituent on the N1 position of the heterocyclic ring have ...
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(PERGAMON-ELSEVIER SCIENCE LTD, 2003-07-18)A sensitive atomic spectrometric method for the redox speciation analysis of antimony in soils is described. The method is based on the selective generation of stibine from Sb(III) in a continuous flow system using atomic ...