Artículos de revistas: Recent submissions
Now showing items 1001-1020 of 4968
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(1995)The characterization of fructose-1, 6-bisphosphatase in stage VI oocytes from the frog Caudiverbera caudiverbera, as well as the in vivo activity, is reported. The enzyme has a subunit molecular weight of approximately 43, ...
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(1995)1. 1. A novel vasorelaxant effect of clonixinate of l-lysine (Clx), analgesic and anti-inflammatory, was studied in rat aortic rings. 2. 2. Clx completely relaxed aortic rings contracted by KCl 70 mM and together with its ...
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(1995)The following amino acids of the Xenopus laevis β subunit of protein kinase CK2 (casein kinase 2) were changed to alanine: Pro-58 (βP→A); Asp-59 and Glu-60 and Glu-61 (βDEE→AAA); His-151-153 (βHHH→AAA). The last 37 amino ...
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(1995)To compare the effects of aphid infestation with some effects of wounding and drought-stress, several physiological parameters and metabolite concentrations were measured in infested, mechanically wounded or water-stressed ...
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(1995)Yeast artificial chromosomes (YACs) from the CEPH MegaYAC library (Paris, France) ranging in size from 350 to 1600 kb and mapping to the q22.1 and q22.2 regions of human chromosome 21 were transferred into mammalian cells ...
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(1995)Comparative studies of granivory intensity across different arid and semi‐and regions of the world have assumed homogeneity of conditions over large geographical areas, despite the existence of evident heterogeneities at ...
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Resource concentration hypothesis: effect of host plant patch size on density of herbivorous insects (Springer-Verlag, 1995)The resource concentration hypothesis (Root 1973) predicts that specialist herbivorous insects should be more abundant in large patches of host plants, because the insects are more likely to find and stay longer in those ...
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(1990)An NADP+-dependent D-xylose dehydrogenase from pig liver cytosol was purified about 2000-fold to apparent homogeneity with a yield of 15% and specific activity of 6 units/mg of protein. An M(r) value of 62000 was obtained ...
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(1994)The calculation of the surface-induced enhancement of the binding energy of hydrogen impurities in transition metals, previously reported for close-packed surfaces, are extended to open surfaces in the fcc and bcc structures. ...
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(1994)Immunohistochemistry was used in this study to evaluate the effects of retinal lesions upon the distribution of neuronal nicotinic acetylocholine receptor subunits in the chick visual system. Following unilateral retinal ...
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(1994)The photodecomposition of new 1,4‐dihydropyridine, furnidipine (CRE‐319); 2,6‐dimethyl‐4‐(2‐nitrophenyl)‐1,4‐dihydropy‐ridine‐3,5‐dicarboxylic acid 3‐tetrahydrofurfuryl (5‐methyl diester) was studied by voltammetric, UV‐vis ...
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Human-Xenopus chimeras of Gsα reveal a new region important for its activation of adenylyl cyclase (1994)G proteins are heterotrimeric GTPases that play a key role in signal transduction. The α subunit of Gs bound to GTP is capable of activating adenylyl cyclase. The amino acid sequences derived from two X. laevis cDNA clones ...
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(Kluwer Academic Publishers, 1994)Extensive mortality of silversides (Atherinidae), Odontesthes bonariensis, was recorded during July 1989 in the Rapel Reservoir. Temporal and spatial changes observed in biomass concentration (chlorophyll-a) through both ...
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(1994)Abstract— Nifurtimox disposition was investigated using the rat isolated perfused‐liver method after administration of 25 μg mL−1 nifurtimox, and its disappearance was monitored by analysing the perfusate sample at various ...
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(1994)The cDNA gene coding for the α subunit of Xenopus laevis casein kinase II was mutated using the overlap extension PCR method. The mutation substituted glutamic acids for Lys75 and Lys76, changing the charge distribution ...
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(1994)A method which allows the evaluation of phenomenological ion exchange constants Kex is proposed and tested in a cationic polyelectrolyte system. Results for nitrate/chloride exchange are nearly constant over the entire ...
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(1994)In vertebrates, brain size variability relates to two main parameters: body size and ecological factors (in particular diet and foraging strategy). It has been considered by many authors that evolutionary brain growth is ...
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(1994)1. 1. 2C-H [2-(2,5-dimethoxyphenyl)ethylamine] (pD2 = 6.74), TMPEA [2-(2,4,5-trimethoxyphenyl)ethylamine] (pD2 = 5.83), 2C-D [2-(2,5-dimethoxy-4-methylphenyl)ethylamine] (pD2 = 5.06), homoveratrylamine [DMPEA, 2-(4,5-dim ...
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(Kluwer Academic Publishers, 1994)The protected areas of Bolivia cover 10.2% of its territory, but only 60% of this surface is considered to be of conservation value. Protected areas are unevenly distributed over the eight phyto-geographic regions of ...
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(1990)The rare Darwin's fox Dusicyon fulvipes (Martin, 1837) was thought to be restricted to Chiloé Island in southern Chile, and to be a subspecies of Dusicyon griseus. We report the finding of a continental population of D. ...