Browsing by Title Artículos de revistas
Now showing items 1586-1605 of 2801
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(Elsevier, 1987)The ability of the ligninolytic actinomycete Streptomyces viridosporus T7A to degrade selected lignin model compounds, both in the presence and in the absence of lignocellulose, was examined. Compounds studied included ...
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(Real Academia de Farmacia, 1990)Se ha llevado a cabo un estudio fitoquímico de las hojas de Escallonia illinita Presl. Escalloniaceae) una planta aromática nativa de Chile, usada en medicina popular para enfermedades hepáticas y conocida vulgarmente como ...
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(México Federación Latinoamericana de Química, 1991)The nor-triterpene Adiantone(22-oxo-21-β-H-hopane),β-sitosterol, psoralene and methyl-p-coumarate were isolated from Adiantum thalictroides var. hirsutum (Culantrillo), a fern used in folk medicine as emmenagoge and expectorant.
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(Frontiers Media S.A.info@frontiersin.org, 2020)
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(PERGAMON-ELSEVIER SCIENCE LTD, 2006-12)Several factors depending on the sludge, the soil, or the combination of both substrates, may affect element availability to plants. In this study, an assessment was done of the effect of two sludges obtained by different ...
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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 ...