Artículos de revistas: Recent submissions
Now showing items 1221-1240 of 2801
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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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(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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(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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(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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(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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(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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(2004)This article describes the basis and development of the solid dosage form section of an educational CD-ROM, including both the theoretical and self-evaluation sections.
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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 ...
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(1996)Tire antipyretic and antiinflammatory properties of a new sesquiterpene, spartidienedione, isolated from Psila spartioides (Asteraceae) were evaluated in rabbits and guinea pigs. At the dose of 25 mg/kg, this substance ...
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(1997)Food-induced changes on bioavailability of 2 sustained release theophylline matrix tablets, which uses an hydrophilic matrix of Carbopol 974P and lipid matrix of hydrogenated castor oil (Cutina HR) as sustaining agents, ...
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(1995)Homalaspis plana is a crab found in the Pacific Ocean coasts from Guayaquil (Ecuador) all the way down to the Strait of Magellan, including all of the Chilean coast. This crustacean is an important resource because it ...
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(1992)Lifetimes of pyrene incorporated into large unilamellar vesicles of dipalmitoylphosphatidylcholine and dioctadecyldimethylammonium chloride increase when the temperature increases prior to the melting temperature of the ...
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(1992)Nimodipine, a calcium antagonist belonging to the dihydropyridine family, produces a well‐defined polarographic peak due to the four‐electron reduction of the nitro group. This peak was used to track the photodecomposition ...
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(1993)The absolute biovailability of a sustained release tablet developed in our laboratory was evaluated. The formulation employs acrylic resins Eudragit as the sustaining release system and tablets were obtained using conventional ...
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(Kluwer Academic Publishers, 1992)Azotobacter vinelandii was better than either Derxia gummosa or Rhizobium trifolii for sorption of UO2 2+. Its maximum binding capacity was 0.25 mmol UO2 2+/g dry biomass with an affinity constant of 333 l/mmol at pH 4.1 ...
