Browsing by Title Artículos de revistas
Now showing items 2248-2267 of 2801
-
(Colegio de Farmacéuticos de la Provincia de Buenos Aires, 2004)En este trabajo se hace una revisión de los sistemas matriciales en lo que concierne a su formulación, concepción, diseño y sus propiedades biofarmacéuticas. Estos sistemas se caracterizan por retardar y regular la ...
-
(Sociedad Chilena de Química, 1998)En este trabajo se desarrolla un método de análisis por inyección de flujo (FIA) para la determinación de ranitidina en formas farmacéuticas y orina, empleando una celda de flujo polarográfica como sistema de detección, ...
-
(Sociedad Chilena de Química, 1980)El estudio químico y espectroscópico de los acil etoxicarbonil metilidentrifenilofosforanos I, revela que son compuestos extraordinariamente estables (1). En este trabajo se informa la síntesis de una serie de ílidos ...
-
(Centro de Perfeccionamiento, Experimentación e Investigaciones Pedagógicas (Chile), 1979)No tiene
-
(Sociedad de Biología de Chile, 1976)Las bis-2-oxazolin-5-onas son compuestos obtenidos por una reacción de ciclación de Glutarilbis-u-aminoácidos. Estas bisoxazolinonas permiten obtener péptidos sintéticos al reaccionar con ésteres de aminoácidos. Estos ...
-
(Sociedad Chilena de Química, 2002)Un nuevo compuesto polipiridilcarbonilo bimetálico de renio(I) y rutenio(II) y los correspondientes complejos precursores monometálicos fueron preparados. Los compuestos fueron caracterizados física y espectroscópicamente ...
-
(Sociedad Chilena de Química, 1994)El estudio fotofísico, en diclorometano (296 K), de los complejos mononucleares con ligantes mixtos del tipo [Cu(PPh3)2(NN)]ClO4* dinucleares con ligantes mixtos del tipo[Cu2(PPh3)2(NN)(NN)(4,4*-BP)] (ClO4)2 y[Cu2(NN)2(4,4*-BP)] ...
-
(2007)Slags from smelting of copper concentrate contains from 2% to 20% of copper and are directed to slag cleaning operation carry out in electric furnaces or other slag cleaning reactors with injection of carboneous reductant. ...
-
(IOP, 2014)Conductive polyaniline nanoparticles (PANI NPs) are synthesized by oxidation of aniline with persulfate in acid media, in the presence of polymeric stabilizers: polyvinilpyrrolidone (PVP), poly(N-isopropylacrylamide) ...
-
(Royal Soc Chemistry, 2015)We synthesized monomeric liquid crystals, M6R8 and I6R8, and nanoparticles of TiO2, to form a nanocomposite, which was characterized by polarized optical microscopy (POM), DSC and structurally by both wide angle X-ray ...
-
(2004)The authors analyze under an ethical and legal perspective the consequences and anxieties generated by the human genome project in the population of four Latin American countries: Argentine, Chile, México and Perú, through ...
-
(Oxford University Press, 2018)BACKGROUND : Mounting evidence has associated high sodium (HS) intake with hypertension, cardiovascular disease, and stroke. We investigated whether HS intake modulates the parameters of endothelial damage, inflammation, ...
-
(MARCEL DEKKER INC, 2002)The organic matter existing in volcanic soils must be investigated not only in quantity, but also in quality in order to understand its role in soils and thus ensure adequate levels of stable organic polymers contributing ...
-
(2012)Inclusion of the organometallic MLn = [HOC 5H 4N• Cp 2TiCl][PF 6] (1), HOC 5H 4N• W(CO) 5 (2), HOC 5H 4N•Mo(CO) 5 (3), [HOC 6H 4CH 2CN•Cp 2TiCl] [PF 6] (4), HOC 6H 4CH 2CN•W(CO) 5 (5) and HOC 6H 4CH 2CN•Mo(CO) 5 (6) into ...
-
(Sociedad Chilena de Química, 1999)A study of matrix effects arising from river water samples using C18 SPE columns in the determination of 38 pesticides having different chemical properties is presented. Recoveries from river water samples of different ...
-
(1999)A study of matrix effects arising from river water samples using C18 SPE columns in the determination of 38 pesticides having different chemical properties is presented. Recoveries from river water samples of different ...
-
(MARCEL DEKKER INC, 2002)A new simple, sensitive and selective solid phase spectrophotometric method has been developed for determination of copper in water. A sensitive analytical zone was prepared by immobilization of zincon in a Sephadex A25 ...
-
(Impact Journals, 2016)Therapeutic attenuated strains of Salmonella Typhimurium target and eradicate tumors in mouse models. However, the mechanism of S. Typhimurium for tumor targeting is still poorly understood. We performed a high-throughput ...
-
(2012)Solid-phase microextraction of hexachlorobenzene from water was implemented for the first time on a rotating disk coated with an octadecyl-bonded silica (C 18) sorptive phase. The results indicate that the sorption performance ...
-
(ELSEVIER, 2006-01-05)A fluorescence method was employed to study the solubilizing interactions of several sucrose esters with Dioctadecyldimethylammonium chloride small unilamellar vesicles. In this paper we studied four different alkyl esters ...