Facultad de Ciencias Químicas y Farmacéuticas: Recent submissions
Now showing items 1101-1120 of 4850
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(1985)The effect on lactose production of several external modulators of intracellular cyclic AMP was studied in rat mammary gland tissue slices and explants. Adrenaline, a β-adrenergic receptor effector, forskolin, a direct ...
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(2005)We examined the genetic makeup of 221 HIV-1 strains from Chilean persons living with HIV/AIDS by HMA and DNA sequencing of the env gene: 143 cases were infected by sexual contact with an already-infected partner, 76 were ...
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(2004)A series of dinuclear iron (III) complexes with carboxylate bridges, of the type [Fe2L2(H20)4](NO 3)2(H2O)m (m=1-3), where L=Schiff base derived from L-α-amino acids and salicylaldehyde have been prepared and characterised ...
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(Royal Society of Chemistry, 2005)The new hybrid organic-inorganic copper oxovanadium phosphates of composition Cu4(bipy)4V4O11(PO 4)2·nH2O (n ∼ 5) (1) and Cu 2(bipy)2V2P2O12 (2) (bipy = 2, 2′-bipyridine) adopting the triclinic symmetry were obtained by ...
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(2004)DFT calculations on Cu4(μ3-X)4L 4 (X = H, CH3, CCH, F, Cl, Br, I; L = NH3, PH3) indicate that, regardless of its nature, X- acts essentially as a two-electron σ-type ligand and that the covalent part of the Cu⋯Cu bonding ...
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(2004)Histones from the parasitic platyhelminthes, Echinococcus granulosus and Fasciola hepatica, were systematically characterized. Core histones H2A, H2B, H3 and H4, which were identified on the basis of amino acid sequencing ...
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(Elsevier, 2006)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 ...
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(Sociedad Chilena de Quimica, 2001)A microdetermination of iron at sub-μg/L level by derivative spectrophotometry has been developed. The compound TPTZ (2, 4, 6-tripyridyl-1, 3, 5-triazine) was used as chromogenic reagent to form a blue complex (pH = 5. 0), ...
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(2004)Reduction of acrylamide formation in potato chips was investigated in relation to frying temperature and three treatments before frying. Potato slices (Tivoli variety, diameter: 37 mm, width: 2.2 mm) were fried at 150°C, ...
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(2004)The solubilization of p-nitrophenol into the hydrophobic microdomains provided by polyelectrolytes carrying alkyl side chains of different length has been investigated in aqueous solutions of pH 5.0 and 8.0. Under these ...
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(2005)Site selectivity and reactivity in some strong organic super bases RN=C(NR2)R, containing several possible sites for protonation, have been analyzed qualitatively in terms of global and local chemical reactivity descriptors ...
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(2005)Two new homologous series of chiral esters derived from Schiff's bases containing a 1,3,4-thiadiazole unit (series 6 and 7) were synthesized and their liquid crystalline and ferroelectric properties investigated. All the ...
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(1991)The structure of the complex (PHL)2S. HN(C6H5)2 has been determined by single-crystal X-ray diffraction methods. The compound crystallizes in the triclinic system, space group P 1, with unit cell dimensions a = 896. 1, b ...
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(2005)Administration of the β-adrenergic agonist isoproterenol results in cardiac apoptosis, The effect of short-term β-adrenergic stimulation by isoproterenol on the activity of plasma, lung, and left ventricular (LV) angiotensin ...
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(2005)A novel molecular tetrameric zinc cluster with phosphate bridges has been synthesized by a hydrothermal method and characterized by X-ray diffraction. The structure is stabilized by neutral H 3PO 4 and water molecules. ...
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(2005)Glu-tRNA is either bound to elongation factor Tu to enter protein synthesis or is reduced by glutamyl-tRNA reductase (GluTR) in the first step of tetrapyrrole biosynthesis in most bacteria, archaea and in chloroplasts. ...
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(1986)The effect of roasting lupin seeds (Lupinus albus cv Multolupa) for 10, 20, 30, and 40 min at 80–90°C was studied. Raw lupin was shown to be markedly deficient in the S‐amino acids. These were not affected by roasting for ...
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(1981)The IR and Raman spectra of solid diamminemercury(II) chloride with 14N/15N and H/D isotopic substitution have been measured. The spectra have been interpreted assuming D3d symmetry for the [Hg(NH3)2]2+ cations which have ...
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(2002)In acetonitrile, the cis-[MoO2]2+ group present in the anionic complex [MoO2(o-SC6H4COO)2]2-, can be functionalized under mild conditions by reaction with arylhydrazines, p-R-C6H4NHNH2. The resulting ionic complexes have ...