Browsing by Issue Date Artículos de revistas
Now showing items 1161-1180 of 2801
-
Asymmetric hydroformylation of vinyl arenes catalyzed by furanoside diphosphinites-Rh(I) complexes (2005-03-30)Diphosphinite ligands 2 and 3, easily prepared from inexpensive D(+)-xylose in few steps, were tested in the Rh-catalyzed asymmetric hydroformylation of several vinyl arenes. High regio-selectivities in branched aldehyde ...
-
(BENTHAM SCIENCE PUBL, 2005-04)The redox chemistry of different nitro compounds of biological significance is focused to understand how the reduction of the nitro group can play an active role in several aspects as: electroanalytical determinations, ...
-
(SPRINGER HEIDELBERG, 2005-04)A simple continuous flow method is proposed to eliminate copper interference in arsenic speciation by hydride generation, based on the selective retention of this interfering ion in an iminodiacetate chelating resin previous ...
-
(JOHN WILEY & SONS LTD, 2005-04)The mechanical, morphological behavior and water absorption characteristics of polypropylene (PP) and silica, or PP and rice-husk, composites have been studied. The silica used in this study as filler was a commercial type ...
-
(PRESTON PUBLICATIONS INC, 2005-04)
-
(BLACKWELL MUNKSGAARD, 2005-04)The title compound, C12H7NO3, consists of a chromone moiety substituted in position 3 with an acrylonitrile group in a Z configuration. The two planar groups are twisted with respect to one another. The only significant ...
-
(ELSEVIER SCIENCE SA, 2005-04-01)A scanning electrochemical microscope (SECM), in the tip generation substrate collection and feedback modes, was used in a method to characterize the electrode mechanism of the O-2/O-2*(-) couple in dimethylsulphoxide ...
-
(FEDERATION AMER SOC EXP BIOL., 2005-05)One of the hallmarks of Alzheimer's disease is the self-aggregation of the amyloid beta peptide (A beta) in extracellular amyloid fibrils. Among the different forms of A beta, the 42-residue fragment (A beta(1-42)) readily ...
-
Potato tuber isoapyrases: Substrate specificity, affinity labeling, and proteolytic susceptibility (PERGAMON-ELSEVIER SCIENCE LTD, 2005-05)Apyrase/ATP-diphosphohydrolase hydrolyzes di- and triphosphorylated nucleosides in the presence of a bivalent ion with sequential release of orthophosphate. We performed studies of substrate specificity on homogeneous ...
-
(SOC BRASILEIRA QUIMICA, 2005-05)A systematic study about the long-range correlations observed in the HMBC spectra of a series of cis and trans 3-(4-oxo-4H-chromen-3-yl)-acrylic acid ethyl esters, and 5-hydroxy derivatives, was carried out. The results ...
-
(ELSEVIER IRELAND LTD, 2005-05-13)The anti inflammatory (per os and topic) and analgesic (per os) properties of the aerial part of Proustia pyrifolia a species in danger of extinction were investigated, and the major. compound"s of two of its active extracts ...
-
(JOHN WILEY & SONS INC, 2005-05-15)The electronic structure and the spectroscopic properties of [Au-2(CS3)(2)](-2), [Au-2(pym-2-S)(2)] (pym = pyrimidethiolate), [Au-2(dpm)(2)](+2) (dpm = bis(diphosphino)methane) were studied using density functional theory ...
-
(ELSEVIER SCIENCE INC, 2005-06)Atmospheric concentrations of polycyclic aromatic hydrocarbons (PAHs) in Santiago de Chile city were evaluated to study particulate PAHs profiles during cold and spring weather periods. Urban atmospheric particulate matter ...
-
(WILEY-V C H VERLAG GMBH, 2005-06)Coho salmon (Oncorhynchus kisutch) is a fatty fish species whose farming production has greatly increased in recent years. Lipid damage produced during Coho salmon chilled storage was studied for up to 24 d. Lipid hydrolysis ...
-
(BENTHAM SCIENCE PUBL LTD., 2005-06)In order to gain inside the mechanism of action of a series of benzo[1,2-c]1,2,5-oxadiazole N-oxide derivatives with in vitro anti-trypanosomal activity, electrochemical and biological studies were performed. Cyclic ...
-
(PERGAMON-ELSEVIER SCIENCE LTD, 2005-06)This is a communication on the removal of copper(II) ions from a residual mine water using an emulsified liquid membrane (ELM). The membrane was prepared by dissolving the extractant LIX-860 (a salicylaldoxime), used as a ...
-
(BLACKWELL PUBLISHING, 2005-06)Activation of microsomal UDP-glucuronyltransferase (UDPGT) activity by treatment of hepatic microsomes with either detergents or Fe3+/ascorbate pro-oxidant system has been reported; however, definite mechanisms underlying ...
-
(SOCIEDAD CHILENA DE QUIMICA, 2005-06)Tetranuclear complexes of Co(III) with bidentate ligands and hydroxo bridges were synthesized in the presence of D-glucosamine, D-mannosamine. D- and L-xylose with the partial resolution the these complexes.
-
(ACADEMIC PRESS INC ELSEVIER SCIENCE, 2005-06-01)The biopolymer chitosan was chemically modified by grafting polyacrylamide or polyacrylic acid in a homogeneous aqueous phase using potassium persulfate (KPS) as redox initiator system in the presence of N,N-methylene-bi ...
-
(ELSEVIER, 2005-06-15)A comprehensive study of the electrochemical reduction in protic media of parent C-4 nitrophenyl 1,4-DHPs and their corresponding nitrosophenyl 1,4-DHPs was carried out. The reduction potentials of synthesized aromatic ...
