Facultad de Ciencias Químicas y Farmacéuticas: Recent submissions
Now showing items 2341-2360 of 5198
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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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(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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(HeteroCorporation, 1998)A series of pyrazolo[1,5-a]pyrimidin-3-ones 3 was prepared from Meldrum's acid and 5-amino-3-arylpyrazoles 1 by cyclization in nitrobenzene of the corresponding 5-pyrazolylaminomethylene Meldrum's acid derivatives 2. The ...
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(2003)Time-resolved photolysis studies of riboflavin (RF) were carried out in the presence and absence of α-, βH- and βL-crystallins of bovine eye lens. The transient absorption spectra, recorded 5 μs after the laser pulse, ...
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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 ...
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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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(Academic Association of Pharmaceutical Sciences from Antofagasta (ASOCIFA), 2017)
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(2002)Ruthenium complexes of the type [RuL(CO)2Cl2], [RuL2Cl2], [RuL2(CO)(H2O)](PF6)2, [RuL2Cl]2(PF6)2, [RuL2(CO)Cl](PF6), and [RuL2(CO3)]·3H2O (where L is a bipyridine or phenanthroline derivative) dissolved in aqueous ...
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(Instituto de la Grasa, 2001)Oxidative stability of crisps fried in two vegetable oils: sunflower oil (SO) and partially hydrogenated sunflower oil (PHSO), was studied. Crisps were stored at temperature at daylight, at 40°C in oven, and a -23°C as a ...
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(2001)Mixed complexes of bis-phenanthroline cobalt(III) and α-D-galactose or β-D- or L-arabinose are identified in aqueous solution from their 1H NMR and circular dichroism (CD) spectra. Galactose forms only the Δ-complex, but ...
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(2001)Detection of O2(1Δg) emission, λmax = 1270 nm, following laser excitation and steady-state methods were employed to measure total, kT, and chemical, kR, reaction rate constants for the reaction between 3-methylindole and ...
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(2001)Ruthenium (II) complexes of the type RuL(CO)(2)Cl-2, [RuL(CO)(2)L-2'](2+) and [RuL(CO)(2)Cl L'](+) [L=bipyridine (bpy), phenanthroline (phen), biquinoline (biq) and L'=pyridine (py), 4-chloropyridine (Cl-py), 4-methoxypyridine ...
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(1995)The catalytic activity of Ru3(CO)9 L3 (L = arylphosphine) in the WGSR and in the reduction of nitro derivatives to amines is studied. The same complex is supported in polystyrene‐divinylbenzene copolymer (PSDVB) and the ...
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(Marcel Dekker Inc., 1999)Dissolution profiles of theophylline (TP) from three types of sustained- release (SR) matrix tablets (plastic [PL], lipid [LP], and hydrophilic [HP]) in different dissolution media, with and without enzymes, were established. ...
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Dissolution kinetics evaluation of controlled-release tablets containing propranolol hydrochloride (Marcel Dekker Inc., 1999)In the present research, controlled-release propranolol hydrochloride tablets were prepared for twice-daily administration, allowing more uniform plasmatic levels of the drug. Pharmaceutical formulations were prepared with ...
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(HeteroCorporation, 1999)New 4-Aryl-6-methyl-8-phenyl-2,3-dihydropyrazolo[3,4-b]diazepines and 4- aryl-8-methyl-6-phenyl-2,3-dihydropyrazolo[4,3-b]diazepines were obtained from the reaction of 4,5-diamino-3-methyl-1-phenylpyrazole 1 with one ...
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(1998)Activation of the sympathetic innervation precedes the induction of polycystic ovaries in rats given estradiol valerate (EV). The mechanism of induction by EV may thus involve both direct and neurogenic components. We ...
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(1999)Two sustained-release (SR) lithium carbonate (Li) matrix tablets, which use a hydrophilic (HP) matrix of hydroxypropylmethylcellulose (Methocel 4K MP) and a lipid (L) matrix of hydrogenated castor oil (Cutina HR) as ...
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(2006)This work shows the synthesis and characterization of new carbonyl complexes derived of 1,8-naphthyridine. Covalently bonded complex can be successfully employed in building of supramolecular structures. Copyright © 2005 ...
