Browsing by Title Artículos de revistas
Now showing items 1429-1448 of 2801
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(1992)An integrated-sensor method for the determination of formaldehyde based on retention of the reaction product of the analyte with p-rosaniline and sulfite in a flow-cell packed with Dowex 1-X-8 anion exchange resin was ...
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(Trans Tech, 2017)Sulfate is a pollutant present in the mining waste water and acid mine drainage. High levels of sulfate can generate important environmental problems. One of the alternatives proposed for the treatment of water with high ...
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(Centro Investigaciones & Publicaciones Farmacéuticas, España, 2020)Argentina is a federal republic with approximately 44 million people, divided into 23 provinces and an autonomous city, Buenos Aires. The health system is segmented into public, social security and private subsystems. The ...
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(Blackwell Publishing Inc., 2018)© 2018 The American Society of Photobiology Naphthoxazole derivatives are small heterocyclic compounds endowed with outstanding fluorescence properties. In this work, we report a detailed study of the intense white light ...
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(1983)The interaction of glutathione with ampicillin was investigated by a new a.c. polarographic procedure. Ampicillin was found to interact strongly with glutathione. The stability constants were ascertained from the polarographic ...
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(1986)Solubilities and IR spectra of DIMBOA in alcoholic solvents showed that the carbonyl group of DIMBOA is hydrogen-bonded to the solvent. Activation parameters of DIMBOA in the same solvents suggested that the decomposition ...
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(2011)The reaction of 5-aminosalicylic acid (5-ASA) with nitrous acid has been studied at low pH under conditions that simulate a gastric environment. The course of the reaction was followed by UV-visible and fluorescence ...
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(1990)1. The findings, derived from different experimental models, examined in this review, provide evidence that the calcium channel blockers and related drugs possess analgesic effects. 2. The antinociceptive action that some ...
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(Bentham Science Publishers B.V., 2015)© 2015 Bentham Science Publishers. Tropical parasitic diseases, especially those produced by protozoan parasites, are a major public health problem in many countries, and their impact in the health burden is significant. ...
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(AMER OIL CHEMISTS SOC A O C S PRESS, 2001-04)The objective of this study was to manufacture a shortening using chemical interesterification (IT) of tallow-sunflower oil blends to replace fish oil in the present formulation, which is now in short supply in Chile. The ...
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(Wiley, 2020)To increase efficiencies of bifacial solar cells, emitter, back surface field (BSF), and metal patterns must be optimized. We study the influence of paste volume, through multiple prints, of two silver pastes on the contact ...
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(2006)The present study was designed to determine whether an association exists between HPA activity and cytokine production in major depression (MD). In 9 patients with MD and 11 control subjects of both sexes, all drug-free, ...
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(ELSEVIER SCI IRELAND LTD, 1998-08-14)The effects of the increase of intracellular calcium, induced by membrane depolarization with 50 mM KCl, and arachidonic acid (AA) on the expression of 25-kD synaptosomal-associated protein (SNAP-25) were studied in cultured ...
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(Royal Soc of Chemistry, 1999)TXRF (total reflection X-ray fluorescence spectrometry), a rapid and reliable multi-element method, was applied to quantify intracellular concentrations of trace and non-trace elements in different mammalian cell lines. ...
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(Amer. Chem. Soc., 1994-09)2-(Trimethylsilyl)-1-phosphabenzene and -1-arsabenzene, Me(3)SiC(5)H(4)E (E = P, AS), react with [Os3H2(CO)(10)] to give the clusters [Os3H2(Me(3)SiC(5)H(4)E)(CO)(9)], which contain sigma-bonded, four-electron-donating mu ...
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(MDPI, 2014)Intramolecular hydrogen bonds (IHBs) play a central role in the molecular structure, chemical reactivity and interactions of biologically active molecules. Here, we study the IHBs of seven related o-carbonyl hydroquinones ...
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(Elsevier, 2020)The presence of the blood-brain barrier (BBB) limit gold nanoparticles (GNP) accumulation in central nervous system (CNS) after intravenous (IV) administration. The intranasal (IN) route has been suggested as a good strategy ...
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(ENDOCRINE SOC, 2000-03)A single injection of estradiol valerate induces a form of cystic ovary resembling some aspects of the human polycystic ovarian syndrome. Preceding the development of follicular cysts, there is an increase in intraovarian ...
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(Sociedad Chilena de Cardiología y Cirugía Cardiovascular, 2000)La novedad y creatividad son los dos requisitos esenciales en toda investigación, ya sea ésta de tipo clínica, básica o básico-clínica. En al actualidad ambos aspectos son básicos para la adjudicación de un proyecto de ...
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(ELSEVIER, 2008-05-15)Extraction of lanthanum, samarium and erbium into a microcapsule containing 2-ethylhexylphosphonic acid mono-2-ethylhexyl ester (EHPNA) is studied. The extraction kinetic model used to predict uptake curves is based on the ...
