منابع مشابه
investigation of the electronic properties of carbon and iii-v nanotubes
boron nitride semiconducting zigzag swcnt, $b_{cb}$$n_{cn}$$c_{1-cb-cn}$, as a potential candidate for making nanoelectronic devices was examined. in contrast to the previous dft calculations, wherein just one boron and nitrogen doping configuration have been considered, here for the average over all possible configurations, density of states (dos) was calculated in terms of boron and nitrogen ...
15 صفحه اولMechanism of Excitation of Aplysia Neurons by Carbon Dioxide
The abdominal ganglion of Aplysia californica was perfused with artificial seawater equilibrated at different P(COCO2)'s and pH's for 5 min or less. 5% CO(2) dropped perfusate pH from 8.0 to 6.5 and produced depolarization and increased discharge rate in visceromotor neurons. Half the giant cells studied had a similar response, whereas the other half were hyperpolarized. Pacemaker neurons showe...
متن کاملCholinergic mechanism in the cerebrovascular action of carbon dioxide.
Cholinergic Mechanism in the Cerebrovascular Action of Carbon Dioxide • The effect of an increase in Pa^., on cortical blood flow was tested in control animals and after atropine or eserine administration. Blood flow was measured at the tip of implanted platinum electrodes by means of the hydrogen clearance method. The results showed that, although atropine did not impede the appearance of auto...
متن کاملThe mechanism of enzymatic carbon dioxide fixation into oxal-acetate.
Studies of the non-enzymatic decarboxylation of /3-keto acids have shown that it is the keto form of the 8-keto acid which loses CO2 to form an enol of the product. This was demonstrated for dimethylacetoacetic acid by Pedersen (1) and for dimethyloxalacetic acid by Steinberger and Westheimer (2). These latter authors studied the catalytic effect of metal ions on the decarboxylation reaction an...
متن کاملMechanism of oxidative carbon dioxide production during Renilla reniformis bioluminescence.
The oxidation of luciferin catalyzed by sea pansy luciferase results in the emission of light. Molecular oxygen is required and carbon dioxide is produced. When the reaction occurs in the presence of H(2) (18)O, both of the oxygens of the carbon dioxide are labeled. One of the oxygens arises from the nonenzymic exchange of the ketone group of the substrate; the other oxygen is incorporated duri...
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ژورنال
عنوان ژورنال: Transactions of the Faraday Society
سال: 1966
ISSN: 0014-7672
DOI: 10.1039/tf9666201803