Artículos de revistas: Recent submissions
Now showing items 841-860 of 2801
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(1999)The Δ-Λ isomerization of partially resolved [Ni(1,10-phen)2(S-aa)]+ systems, where S-aa is S-phenylalaninate, S-isoleucinate, S-leucinate, S-valinate, or S-alaninate, has been studied at 15,20 and 25°C in methanol as ...
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(Royal Society of Chemistry, 1998)The UV irradiation of [Re(η5-C5Me5)(CO)3] in the presence of C6F6 effected intermolecular C-F and intramolecular C-H activation generating [Re(η6-C5Me4CH2)(CO) 2(C6F5)] 1a in two isomeric forms. In the major isomer the CH2 ...
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(2006)The present work studied the effect of different treatments at high temperatures on the nutritional properties of thiamine retention and color measurement experimentally. Canned salmon (Salmo salar) was processed under ...
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(1970)Micellar effects upon the reaction between hydroxide ion and bis-2,4-dinitrophenyl phosphate to give 2,4-dinitrophenyl phosphate have been examined. The reaction is catalyzed up to 30-fold by cationic micelles of ...
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(2006)Ozone and UV radiation were analyzed at eight stations from tropical to sub-Antarctic regions in South America. Ground UV irradiances were measured by multichannel radiometers as part of the Inter American Institute for ...
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(2006)Daily particle samples were collected in Chillán, Chile, at six urban locations from September 1, 2001, through September 30, 2003. Aerosol samples were collected using monitors equipped with a Sierra Andersen 246-b cyclone ...
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(1998)The reaction of copper(I) iodide with tetraethylthiuram monosulfide LEt afforded the novel copper(I) pentanuclear neutral complex [CU5LEt2I5]·EtOH·MeCN 1. Its crystal structure may be described as a very distorted octahedral ...
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(2006)The ionic cobalt (II) title complex [Co2(OH)2 (Ac)3(Bipy)2]·K·2(H2O) (where Ac: Acetate, Bipy: 2,2-bipyridine) consists of anionic bimetallic unit in which cobalt ions are bridged by hydroxo and acetate ligands, balanced ...
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(1997)A new hexadentate ligand 3,6-bis[(6-methyl-2-pyridyl)(2-pyridyl)methyl]pyridazine (mbdpdz) was prepared by a condensation reaction of 3,6-dichloropyridazine and (6-methyl-2-pyridyl)(2-pyridyl)methyllithium, and the following ...
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(2006)Full title: Two new hybrid organic/inorganic copper(II)-oxovanadate(V) diphosphonates: [Cu2(phen)2(O3PCH2PO 3)(V2O5)(H2O)]·H 2O and [Cu2(phen)2(O3P(CH 2)3PO3)(V2O5)] ·C3H8. Synthesis, structure, and magnetic properties. ...
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(2006)The exchange interactions in a Ni12 complex have been studied by using theoretical methods based on density functional theory. The calculated J values reproduce correctly the S = 12 ground state of this system found ...
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(2006)The synthesis, characterization and electrochemistry of a novel nanocomposite based on the co-intercalation of lithium and poly(acrylonitrile) (PAN) in molybdenum disulfide [Li0.6MoS2(PAN) 1.2·0.5H2O] is described. The ...
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A common conformation of stabilized triphenyl phosphonium ylidic diesters with bulky alkoxy groups (2009)The phosphonium ylidic diesters, methyl and ethyl isopropyl and, methyl and ethyl t-butyl triphenylphosphoranylidene malonates, 1a,b and 2a,b, respectively, have the syn-anti conformation in solution, as in the crystal, ...
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(2006)We have recently shown that hyperosmotic stress activates p65/RelB NFκB in cultured cardiomyocytes with dichotomic actions on caspase activation and cell death. It remains unexplored how NFκB is regulated in cultured rat ...
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(2006)Leaf extracts of Ugni molinae Turcz. are used in the Chilean cosmetic industry on the assumption that they have decongestant, regenerative, and anti-aging properties. A bioassay-guided fractionation of this plant material ...
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(2006)Copper-embedded low-density polyethylene (LDPE) composites were fabricated using different copper concentrations in the polymer matrix. The copper particles were spherical with a mean particle size between 200 and 300 nm. ...
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(2000)The 1H and 13C NMR spectra of a set of structurally related tricyclic quinones consisting of 4,4-dimethylanthracene-1,9,10(4H)-trione (1), 4,4,6,7-tetramethylanthracene-1,9,10(4H)-trione (2) and the regioisomers 4,4,5-(3), ...
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(2000)The crystalline ion pair [Co2{OOC-CCo3(CO)9}5, C10H6(N(CH3)2)2H] (1) presents unusual magnetic properties. The X-band EPR spectrum of 1 at room temperature presents two unresolved bands at g = 1.98 and 4.55. At a low ...
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Separation of Cu(II) and Mo(VI) from mine waters using two microporous membrane extraction systems (Marcel Dekker Inc, 2000)This is a report on the separation and recovery of Cu(II) and Mo(VI) ions from two Chilean mine waters using two hollow fiber-type microporous liquid membrane extraction systems. LIX-860 (a salicylaldoxime) and Alamine 336 ...
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(Associacao Brasileira de Divulgacao Cientifica, 2000)Potato apyrase, a soluble ATP-diphosphohydrolase, was purified to homogeneity from several clonal varieties of Solanum tuberosum. Depending on the source of the enzyme, differences in kinetic and physicochemical properties ...
