Facultad de Ciencias Químicas y Farmacéuticas: Recent submissions
Now showing items 2201-2220 of 5198
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(Academic Press Inc., 2004)
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(Verlag der Zeitschrift fur Naturforschung, 2005)Bioassay-directed fractionation for the determination of antimicrobial activity of Uncaria tomentosa, has led to the isolation of isopteropodine (0.3%), a known Uncaria pentacyclic oxindol alkaloid that exhibited antibacterial ...
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(1979)Waste material obtained from the mechanical peeling of Antarctic Krill (Euphasia superba) was studied in order to evaluate its potential use as a raw material for the preparation of protein isolates. A dye‐binding method ...
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(1999)The dipole polarizability of a series of clusters of the type LinHm has been calculated using density functional methods. The study of the trends in the mean polarizability and the anisotropy are explained in terms of the ...
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(1990)Barley seedlings were subjected to water and cold stress, and the composition of lipid fractions and the accumulation of several low molecular weight metabolites in leaves determined. Proline, glycine-betaine and the total ...
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Preparation of new cationic complexes [(η5-C5H5)Fe(dppe)L]PF6 with sulphur and other donor ligands (1994)The reaction of (η5-C5H5)Fe(dppe)I with the ligand L′ (L′ = S2(CH3)2, C6H5SNR2 (R = CH3, C6H11), S(NC4H8O)2, P(n-Bu)3, tetrahydrofuran and NC5H5 in the presence of T1PF6 have been investigated. Formation of the new cationic ...
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(1993)Swedish wheats were analysed at the seedling stage for hydroxamic acids (Hx), a family of natural aphid resistance factors. Analysis comprised the historical development from old landraces to modem cultivars, and included ...
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(Elsevier Ltd, 1997)Copper(II) complexes of the ligands (6-methyl-2,2′-dipyridyl)methane (MeDPM) and (6,6′-dimethyl-2,2′-dipyridyl)methane (diMeDPM) were prepared and used as catalysts for the oxidation of 3,5-ditert-butylcatechol to ...
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(1981)Defatted peanut flour was texturized in a Wenger X‐25 extruder at 25.1% moisture content and 140°C product temperature. Texturization did not have any significant effect on the amino acid pattern nor on the PER of defatted ...
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(1970)The catalytic efficiencies of phenyl- and 2,4-dimethoxyphenylcetyldimethylammonium bromides (CPDA and CDPDA) are greater than that of cetyltrimethylammonium bromide (CTABr) for the spontaneous hydrolyses of the dianions ...
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(1974)The absorbances in the uv region of sodium p-toluene sulfonate, sodium toluate, sodium benzene sulfonate and sodium phenyl phosphate have been measured in the presence of increasing amounts of cetyl trimethyl ammonium ...
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(1997)The monoamine oxidase (MAO) inhibitory properties of a series of amphetamine derivatives with different substituents at or around the para position of the aromatic ring were evaluated. In in vitro studies in which a crude ...
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(Kluwer Academic Publishers-Plenum Publishers, 1992)It has been previously reported that dimeric compounds of the general formula [L3Cu(II)]2(μ-Cl)2 exhibit a correlation between their magnetic coupling constant J and the bridging Cu-Cl-Cu angle. A full survey of the published ...
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(1993)A differential pulse polarographic method for the identification and quantitative determination of enoxacin is described. The method is based on the electrochemical reduction of the drug at the dropping mercury electrode. ...
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(Oxford University Press, 2011)A high-performance liquid chromatography (HPLC) method for the determination of azadirachtin (A and B) residues in bovine muscle has been developed. Azadirachtin is a neutral triterpene and chemotherapeutic agent effective ...
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(1969)Several iron (II) nitrosyl bis-dithiocarbamates have been studied by the Mössbauer and other spectroscopic methods. The Mössbauer effect has proved to be useful for studying slight changes in chemical bonding due to ...
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(Royal Society of Chemistry, 2017)© 2017 the Owner Societies. 2-Aminothiazolo[4,5-c]porphycenes are a novel class of 22-π electron aromatic porphycene derivatives prepared by click reaction of porphycene isothiocyanates with primary and secondary amines ...
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(Elsevier Ltd, 1998)
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(Sociedad Chilena de Quimica, 2017)© 2017 Sociedad Chilena de Quimica. All rights reserved. Single crystals of 1,3-bis(cyanomethoxy)calix[4]arene (1) were grown from Chloroform/Methanol mixture and these were nanodecorated with colloidal gold nanoparticles ...
