Artículos de revistas: Recent submissions
Now showing items 1021-1040 of 4968
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(Kluwer Academic Publishers-Plenum Publishers, 1994)Phloem sap of wheat seedlings differing in whole leaf hydroxamic acid (Hx) concentrations was collected by cutting stylets of feeding aphids. DIMBOA-glucoside was the only Hx-related product found. Concentration of ...
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(1994)Microsomal preparations from maize seedlings exhibited N-hydroxylase activity with 2-hydroxy-1,4-benzoxazin-3-one (HBOA) as substrate, but not with its 7-methoxy analogue (HMBOA), or their corresponding 2-O-β-d-glucosides. ...
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(Kluwer Academic Publishers-Plenum Publishers, 1994)Three new dihydro-β-agarofuran sesquiterpenes from two species of Maytenus were isolated and their structures were elucidated by means of1H and13C NMR studies. The differences and similarities noted in the chemical content ...
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(1994)DIMBOA, the main hydroxamic acid in maize and wheat, is found mainly as a glucoside in intact maize plants; when the tissue is damaged a β-glucosidase releases DIMBOA from DIMBOA-glucoside. The effects of DIMBOA and its ...
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(Royal Society, 1994)Odorant responses of isolated olfactory neurons from the toad Caudiverbera caudiverbera were monitored by using patch-clamp techniques. Depending on the stimulus, the same neuron responded with an increase or a decrease ...
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(1994)Different infestation levels with the greenbug (Schizaphis graminum Rondani) were correlated with physiological parameters and several metabolite concentrations in young barley plants (Hordeum vulgare cv Aramir). Leaf water ...
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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. ...
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(1993)Phospholipase A2 and lysophospholipids have been implicated in the mammalian sperm acrosome reaction. In this study we further investigated the role of this enzyme and lysophospholipids on the acrosome reaction of hamster ...
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(1993)Frugivores affect Cryptocarya alba seeds both positively and negatively by the simple act of removing the pericarp of the fruits. Germination is both increased and advanced but simultaneously seed mortality by rodent ...
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(1993)The infrared spectrum of mono(diethylenetriamine)copper(II) nitrate has been obtained in the frequency range 4000-80 cm-1. Assignments of fundamental frequencies in the coordination site, as well as in the free and bonded ...
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(1990)The 5'-terminus of a rRNA operon (rrnT2) from Thiobacillus ferrooxidans was characterized. The rRNA promoters from this microorganism were identified by means of a functional assay in Escherichia coli. DNA sequencing of ...
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Solubilization of Alkylpyridinium Ions in Cationic Micelles: Effect of the Electrostatic Repulsion (1993)Binding constants of n-alkylpyridinium, CnPd+ (n = 10, 11, 12, 13, 14, and 16), to CTAX micelles, where X = Br− and Cl−, and to CTAOTOS were determined by ultrafiltration and a steady-state fluorescence method. These ...
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(1993)The infrared spectra of seven bis(N-phenyl-substituted hydroxynaphthylaldiminate) complexes of Cu(II) were scanned from 4000 to 100 cm-1. Particular emphasis is given to the low-energy region. The assignment of the chelate ...
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(1993)Abstract— The disposition of nifurtimox was studied in the rat isolated perfused liver using a recirculating system. The drug was administered as a bolus (5·0, 15·0 or 30·0 μg mL−1), and its disappearance was monitored by ...
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(1993)CaSein kinase II purified from the nuclei of Xenopus laevis oocytes as well as the recombinant α and β subunits of the X. laevis CKII, produced in E. coli from the cloned cDNA genes, were tested with different divalent ...
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(1993)1. 1. The electrophysiological effects of flunixin and mefenamic acid, non-steroidal analgesics, on frog cardiac pacemaker cells, were studied by intracellular action potential recording. 2. 2. Results show that flunixin ...
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(1989)The adsorption kinetics of the gold‐thiourea complex on activated charcoal was studied. Experimental runs were made in a batch reactor at constant temperatures and stirred by a magnetic system. Samples were taken at different ...
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(1993)The digestion of tubulin with subtilisin and the reassociation of the digestion products was followed by means of the fluorescent probe 4',6-diamidino-2-phenylindole (DAPI). The fluorescence spectra of DAPI bound to chicken ...
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(1993)The known triterpenoids β‐amyrin (= olean‐12‐en‐3β‐ol; 22), lupeol (= lup‐20(29)‐en‐3β‐ol; 17), betulin (= lup‐20(29)‐ene‐3β,28‐diol; 18), lup‐20(29)‐ene‐3β,30‐diol (20), oleanolic acid (= 3β‐hydroxyolean‐12‐en‐28‐oic acid; ...
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(1993)Two members of the ATP-dependent class of phosphoenolpyruvate (PEP) carboxykinases (Saccharomyces cerevisiae and Escherichia coli PEP carboxykinase), and one member of the GTP-dependent class (the cytosolic rat liver enzyme) ...
