Facultad de Ciencias Químicas y Farmacéuticas: Recent submissions
Now showing items 2181-2200 of 5056
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(2004)A rapid method of capillary zone electrophoresis is described to determine the oxidized (GSSG) and reduced (GSH) form of glutathione in plant tissue. In order to separate both analytes in a fused-silica capillary, the pH ...
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(1991)Kinetic and product studies indicate that the title compound decomposes in aqueous solutions to give 5-nitro-2-aminophenol with the intermediacy of N-(2-hydroxy-4-nitrophenyl)carbamic acid. © 1991.
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(1993)The relations between the atomic softness and the atomic electric dipole polarizability are studied, both in a theoretical and an empirical way. For atoms and ions with one or two valence electrons a remarkably good ...
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(2005)Thyronine derivatives are essential indicators of thyroid gland diseases in clinical diagnosis and are currently used as standards for developing ordinary biochemical assays. Photo-oxidation of gland hormones of the thyronine ...
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(1969)The shift of the first and second spin allowed bands due to the stepwise replacement of the nitrogen atoms in a complex of Cr(III) of the CrN6 type by oxygen atoms of water or of carboxylic groups is analyzed in terms of ...
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(2005)We have investigated the riboflavin (RF)-sensitized inactivation of glucose 6-phosphate dehydrogenase (G6PD) in the presence and absence of trans-urocanic acid (UCA). The inactivation of the enzyme results from its direct ...
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(1996)The azomethin ylide of the 2-p-methoxyphenyl-4-phenyl-2-oxazolin-5-one underwent 1,3-dipolar cycloaddition to both tautomers of the 1-nitroso-2-naphthol. The reaction yields two naphthoxazoles: 2-phenylnaphtho[1,2-d]oxazole, ...
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(1989)A method for the differential-pulse polarographic determination of nifedipine has been developed, based on the electrochemistry of the aromatic nitro group in the drug. Polarography has also been used in studies of the ...
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(American Oil Chemists' Society, 2003)Oleoresin of rosa mosqueta (Rosa rubiginosa) was encapsulated with starch or gelatin by spray-drying. Stability of the powders was studied at 25, 40, and 55°C in the dark. Degradation of trans-rubixanthin, trans-lycopene, ...
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(1979)Six alkaloids have been isolated from Lycopodium magellanicum. These include the known alkaloids lycopodine, acetyldihydrolycopodine, lycodine, N-methyllycodine, acetylfawcettine and a new alkaloid, 5-dehydro-magellanine. ...
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(1990)The photochemistry of ethyl esters of α-oxo-carboxylic acids of the type RCOCO2CH2CH3 was examined using a combination of steady state irradiation and laser flash photolysis techniques. The experimental results indicate ...
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(1980)Urease (EC 3.5.1.5) was purified from Spirulina maxima by ammonium sulfate precipitation, DEAE-cellulose chromatography and gel filtration on Sephadex G-200. The enzyme had maximum activity at pH 8.7, a Km for urea of 0.12 ...
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(HeteroCorporation, 2000)Several new 6-amino- and 6,8-diamino-4-aryl-2,3-dihydropyrimido[4,5- b][1,4]diazepines were obtained from the reaction of 4,5,6-triaminopyrimidine 1a and 2,4,5,6-tetraaminopyrimidine 1b with one equivalent of 3- ...
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(2003)Linear solvation energy relationship, LSER, and theoretical linear solvation energy relationship, TLSER, formalisms are applied to the analysis of solvent effects on singlet oxygen reactions. Treatments allow quantitative ...
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(2002)The objective of this work was to develop an educational CD-ROM as a complement to the traditional practical-theoretical teaching of unit operations to pharmacy students. The CD-ROM has five main themes. Three of them ...
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Study of a procedure for the obtainment of methylcellulose from mechanic pulp in homogeneous media (1996)The etherification reaction of mechanic pulp (MP) with dimethylsulphate (DMS) in homogeneous media was studied using a 25-1 fractional factorial experimental design. In according to this model the quantity of DMS/2 g of ...
