Artículos de revistas: Recent submissions
Now showing items 1161-1180 of 4968
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(Portland Press Ltd, 1997)Strains of Escherichia coli bearing different forms of phosphofructokinase were used to assess the occurrence of futile cycling in cell resuspensions supplied with glycerol as gluconeogenic carbon source. A model was used ...
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(Elsevier B.V., 1997)A highly sensitive and selective second derivative spectrophotometric method has been developed for the determination of copper and iron in mixtures. The method is based on the separation of the analytes by liquid-liquid ...
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(1997)The sol-gel treatment of equal amounts of chitosan and partially hydrolyzed aminopropylsiloxane (APS) leads to the formation of transparent, flexible films indicating high compatibility at the molecular level of the ...
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(1997)Protein kinase CK2 (casein kinase 2) is a ubiquitous Ser/Thr protein kinase involved in cell proliferation. Mutation of the α subunit of the Xenopus laevis CK2 to change aspartic acid 156 to alanine (CK2αA156) resulted in ...
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(1997)Seedlings of nine southern Chilean trees were grown at three nutrient supply rates, to examine the roles of growth rate, biomass distribution and nutrient use traits in determining species natural distributions on resource ...
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(Springer New York LLC, 1997)Olfactometry using an apterous individual of Rhopalosiphum padi (L.) showed an arresting effect by volatiles from a wheat seedling and a repellent effect by volatiles from a wheat seedling infested with aphids at a high ...
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(Blackwell Publishing Ltd, 1997)Aphid infestation triggered a significant induction of hydroxamic acids (Hx) in wild wheat Triticum uniaristatum seedlings in comparison to control seedlings. We hypothesized that indirect costs of Hx induction (expressed ...
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(Blackwell Publishing Ltd, 1996)The effects of three wheat cultivars and two oat cultivars on the development of the cereal aphid parasitoid Aphidius rhopalosiphi De Steph, and the generalist aphid parasitoid Ephedrus plagiator (Nees) (Hymenoptera: ...
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(1995)Northern‐blot analysis of RNAs from different tissues demonstrated that the mRNA for the protein kinase CK2α subunit is very abundant in the ovary of Xenopus laevis. The competitive reverse‐PCR technique has been used to ...
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(1996)Wheats and triticales resistant to Russian wheat aphid (RWA). Diuraphis noxia, contained medium to very high concentrations of hydroxamic acids. Feeding behaviour and performance of RWA in wheat seedlings differing in ...
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(Natl Research Council of Canada, 1996)The marine gastropod mollusk *Trimusculus peruvianus collected on the coast of Central Chile yielded four new labdane metabolites. The structural elucidation of all compounds was accomplished by spectral analysis. One ...
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(John Wiley and Sons Inc., 1996)1 The selectivity of action of boldine and the related aporphine alkaloids, predicentrine (9-O-methylboldine) and glaucine (2,9-O-dimethylboldine) on α1-adrenoceptor subtypes was studied by examining [3H]-prazosin competition ...
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(Elsevier Ltd, 1996)Four new meroterpene derivatives have been isolated in a bioassay- guided study of the methanol extract of the leaves of Psoralea glandulosa, in addition to the known compounds bakuchiol and angelicin. Structures for the ...
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(Elsevier Ltd, 1996)Six new tropane alkaloids have been isolated from the leaves of the endemic Chilian plant Schizanthus litoralis (Solanaceae). The new structures include a new tropanol dimer of itaconic acid together with 6β- senecioylox ...
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(American Oil Chemists' Society, 1996)The induction periods for the peroxidation of various fish oils at 55-90°C were studied by the Rancimat test. The natural logarithms of the induction periods varied linearly with respect to temperature, with a mean coefficient ...
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(Elsevier, 1996)Electrical conductivity and lithium diffusion coefficients of nanocomposites prepared by intercalation of molybdenum disulfide with poly(ethylene oxide), Li0.1,MoS2(PEO)γ, are informed. The products show a semiconductor ...
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(1996)The petrosal ganglion contains most of the perikarya of sensory neurons of the glossopharyngeal nerve. We studied the number and size of neuronal somata in 4 petrosal ganglia from adult cats. Ganglia were serially sectioned ...
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(1996)The essential oils of two samples of Satureja boliviana (Benth.) Briq. collected in Peru and Bolivia, were obtained by hydrodistillation, and analyzed by capillary GC and GC/MS. The major constituents of the Peruvian oil ...
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(1996)Essential oil, obtained by hydrodistillation, from fresh leaves of Satureja gilliesii (Grah.) Briq. (Lamiaceae), which is an endemic species of Chile, was analyzed by GC and GC/MS. The major constituents were the oxygenated ...
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(Blackwell Munksgaard, 1996)Boldine (5,6,6a,7-tetrahydro-1,10-dimethoxy-6-methyl-4H-dibenzo[de,g]quinoline-2,9-diol) is an aporphine alkaloid noted for its antioxidant properties. A salient feature of the molecule is the non-planarity of the biphenyl ...