Browsing by Title Artículos de revistas
Now showing items 1591-1610 of 2801
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(JOHN WILEY & SONS LTD, 2007-01)Chlorophenylmaleimide (Cl-PhMI) and N-maleoylglycine (N-MG) with beta-methylhydrogen itaconate (beta-MHI) were copolymerized by radical polymerization, and their metal ion retention capacity (MRC) and thermal behavior were ...
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(Bentham Science Publishers Ltd., 2017)This review focuses on the application of metal nanoparticles in the diagnosis and treatment of Alzheimer's and Parkinson's diseases. Metal nanoparticles present interesting physicochemical properties that can be applied ...
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(1960)Two crystalline forms of bis-(5-aminotetrazolato)-copper (II) have been prepared and characterized. Visible and ultraviolet spectra of aqueous copper (II)-5-aminotetrazole solution have been examined. Continuous variation ...
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(2000)The new complexes [CpM(L2)NCCH2Fc]PF6 (M = Fe 1, Ru 2; Fc = ferrocenyl), have been prepared from reaction of CpM(L2)X and the ligand Fc-CH2CN 3 in methanol and in the presence of NH4PF6. The compounds were characterized ...
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(2007)We report a study of the nonmetal-metal transition of free-standing Pd N clusters (2≤N≤21) carried out through two different theoretical approaches that are extensively employed in electronic structure calculations: a ...
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(JOHN WILEY & SONS INC, 2002-03-15)The electronic structures of complexes and one-dimensional metallomacrocycles with cyanide as bridged ligand, such as [MacM(CN)(2)](-) and [MacM(CN)](n) [Mac = phthalocyanine, tetrabenzoporphyrine; M = Co(III), Rh(III)] ...
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(Sociedad Chilena de Química, 1984)Several methods recommended for soil analysis using acid digestion were tested for the total analysis of minor and trace elements of the clay fraction. The proposed method using mixtures of HClO4/HF was adequate to dissolve ...
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(2002)A reliable methodology for identification and quantification of Polycyclic Aromatic Hydrocarbons (PAHs) in atmospheric aerosols has been developed, using extraction with dichloromethane, a clean-up step for purification ...
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(SOCIEDAD CHILENA DE QUIMICA, 2002-12)A reliable methodology for identification and quantification of Polycyclic Aromatic Hydrocarbons (PAHs) in atmospheric aerosols has been developed, using extraction with dichloromethane, a clean-up step for purification ...
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(2007)The methoxycarbonylation of alkenes catalyzed by palladium(ii) complexes with P,N-donor ligands, 2-(diphenylphosphinoamino)pyridine (Ph 2PNHpy), 2-[(diphenylphosphino)methyl]pyridine (Ph 2PCH2py), and 2-(diphenylphosphin ...
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(John Wiley & Sons Ltd., 2014)Palladium(II) complexes containing phosphine donor ligands derived from naphthyl(diphenyl)phosphine were synthesized and characterized by NMR and elemental analysis. The complexes were studied as catalyst precursors in ...
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(John Wiley and Sons Ltd, 2014)Palladium(II) complexes containing phosphine donor ligands derived from naphthyl(diphenyl)phosphine were synthesized and characterized by NMR and elemental analysis. The complexes were studied as catalyst precursors in the ...
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(2009)The catalytic behaviour of different complexes of Palladium(II) containing mono or bidentate phosphorus or nitrogen ligands in the methoxycarbonylation reaction is examined. The pre-catalysts containing either a diphosphine ...
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(Springer, 2015)Palladium complexes of the type [Pd(L)Cl(PPh3)]Cl (L = 2-diphenylphosphinoamino)pyrimidine, or 2-diphenylphosphinoaniline), generated in situ by addition of one equivalent of PPh3 to the corresponding neutral complexes ...
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(GEORG THIEME VERLAG KG, 2002-01)Psila boliviensis (Wedd.) Cabr. yielded a new phenylpropanoid, named methyl psilalate. The structure was established by means of standard spectroscopic techniques. The microbiological evaluation of the compound revealed ...
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(MUNKSGAARD INT PUBL LTD, 2001-02)The crystal structures of four alkyl 3-oxo-2-(triphenylphosphoranylidene)butyrates, where the alkyl group is methyl (C23H21O3P .0.5C(6)H(6)), (II), ethyl (C24H23O3P), (III), isopropyl (C25H25O3P), (IV), or tert-butyl ...
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(2011)Methyl-β-cyclodextrins (MβCDs) are molecules that are extensively used to remove and to load cholesterol (Chol) from artificial and natural membranes; however, the mechanism of Chol extraction by MβCD from pure lipids or ...
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(Frontiers Media, 2018)The alpha 7 nicotinic acetylcholine receptor (nAChR) is expressed in neuronal and non-neuronal cells and is involved in several physiopathological processes, and is thus an important drug target. We have designed and ...
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(Sociedad Chilena de Química, 2002)Se desarrolló una metodología confiable para la identificación y cuantificación de Hidrocarburos Aromáticos Policíclicos (Polycyclic Aromatic Hydrocarbons, PAHs) en aerosoles atmosféricos, que incluye la extracción con ...
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(2010)Metsulfuron-methyl sorption/desorption behavior was studied through batch sorption experiments in three typical volcanic ash-derived soils belonging to Andisol and Ultisol orders. Their distinctive physical and chemical ...