Facultad de Ciencias Químicas y Farmacéuticas: Recent submissions
Now showing items 4241-4260 of 5085
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(KLUWER ACADEMIC PUBL, 1997-05)Copper mining activities are very important in central Chile. Like other metals, copper is a nutrient for most plants at low concentration levels; however, at higher levels it may become toxic. At present, copper abundance ...
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(AMER CHEMICAL SOC, 1996-05-15)The roles of chemical kinetics and mass transfer in two types of bioreactors (packed-column reactors and rotating disk bioreactors), used with continuous-now sample/reagent(s) processing, are discussed in detail. A normalized ...
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(ROYAL SOC CHEMISTRY, 1997-10)A flow injection photometric method for the sequential determination of zinc and copper in mixtures was developed based on the variation of the stability of the chromogenic complexes between the analytes and the reagent ...
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(INST ORGANIC CHEM AND BIOCHEM, ACAD SCI CZECH REPUBLIC, 1991-12)Five N-p-phenyl substituted benzamidines were studied by DC and DP polarography in a wide pH range. Coulometric results show that the overall processes are four-electron reductions. Logarithmic analysis of the waves indicate ...
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(AMER PHARMACEUTICAL ASSN, 1990)Nifurtimox is polarographically reducible over the whole pH range, the nitro group being reduced to the hydroxylamine group in a 4ē process and subsequently the amine being formed in a 2ē process at a pH value below 4. The ...
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(KLUWER ACADEMIC/PLENUM PUBL, 1999-01)
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(PERGAMON-ELSEVIER SCIENCE LTD, 2002-06-01)The development of a new HPLC-UV diode array procedure applied to follow the hydrolytic degradation of two well-known 4-nitrophenyl-1,4-dihydropyridine derivatives, nitrendipine and nisoldipine is reported. Hydrolysis of ...
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(MARCEL DEKKER INC, 2002)The abundant aporphine alkaloid (S)-(+)-boldine (1) was selectively nitrosated with sodium nitrite in acetic acid affording 8-nitrosoboldine (2) which was hydrogenated catalytically to give 8-aminoboldine (3). The latter ...
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(MARCEL DEKKER INC, 2001)A method that allows the synthesis of 4 different heterocyclic systems of fused aryl oxazoles, i.e., naphtho[1,2-d], naphtho[2,1-d], naphtho[2,3-d], and benzo[d]oxazoles in reasonable yield is del scribed. This method ...
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(JOHN WILEY & SONS LTD, 2001-06)The novel heterocycles 1,11-dimethoxy-2-hydroxy-6-methyloxazolo[4,5-k]-5,6,6a,7-tetrahydro-4H-dibenzo [de,g]quinoline, 1,12-dimethoxy-2-hydroxy-6-methyl-9-phenyl-10H-oxazin[5,6-k]-5,6,6a,7-tetrahydro-4H-dibenzo ...
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(AMER SOC BIOCHEMISTRY MOLECULAR BIOLOGY INC, 1996-09-06)ATP diphosphohydrolase from tegumental membranes of Schistosoma mansoni was solubilized with Triton X-100 plus deoxycholate and separated by preparative nondenaturing polyacrylamide gel electrophoresis. Two isoforms with ...
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(WILEY-V C H VERLAG GMBH, 2000-11)The easy transformation of 5,11,17,23-tetra-tert-butyl-25,27-bis(aminoethoxy)-26,28-dihydroxycalix[4]arene (2) into 5,11,17,23-tetra-tert-butyl-26,28-dihydroxy-25,27-bis(2-iso-thiocyanoethoxy)calix[4]arene (3) and ...
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(Madrid, Dpto. de Investigaciones Bromatológicas. Consejo Superior de Investigaciones Científicas, 1971)The importance of triptophan in food value and the problems that are still encountered when it is measured prompted the comparison of different techniques of hydrolysis by means of which it can be freed from food protein. ...
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(Elsevier Science Publisher B. V., 1986)Native porins from Salmonella typhi Ty2 outer membrane, and porins alkylated with pyridoxal phosphate (Plp) were studied in planar lipid bilayers. The conductance of bilayers exposed to native or chemically modified porins ...
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(Kluwr Academic Publisher, 1999)Traditional identification of peach and nectarine varieties relies on the assessment of agronomic traits of the adult plant. This leads to a significant delay of time, constraints to breeders in the surveillance of germplasm ...
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(Sociedad Latinoamericana de Nutrición, 2002-03)Existe en el mercado una gran variedad de productos desinfectantes de uso tradicional en la industria alimentaria, como cloro, yodo, amonios cuaternarios y sus respectivos derivados. Sin embargo, han aparecido otros ...
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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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(Sociedad Chilena de Cardiología y Cirugía Cardiovascular, 2001)La apoptosis junto a la paraptosis y la necrosis constituyen las principales formas de muerte celular conocidas hasta la fecha. La apoptosis se caracteriza por una disminución del volumen celular y formación de "cuerpos ...
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(2011)Este libro es, en rigor, una versión ampliada de los cursos “Introducción a la Farmacia” y “Farmacia Social” que dicto en los primeros años de la carrera de Farmacia en la Facultad de Ciencias Químicas y Farmacéuticas ...
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(Consejo Superior de Investigaciones Científicas, Instituto de la Grasa y sus Derivados, 2002)Four vegetable oils with different polyunsaturated/saturated fatty acid ratio(P/S):5.2 for sunflower oil, 3.4 for canola rapeseed oil, o.4 for a blend of palm olein and canola rapeseed oil (80:20),and 0.3 for palm olein ...
