نتایج جستجو برای: مولکول h2
تعداد نتایج: 27881 فیلتر نتایج به سال:
The epithelium of the mouse vomeronasal organ (VNO) consists of apical and basal layers of neuronal cell bodies. Vomeronasal sensory neurons (VSNs) with cell bodies in the basal layer express the G-protein subunit G alpha(o) and members of the V2R superfamily of vomeronasal receptor genes and project their axons to the posterior accessory bulb (AOB). V2R(+) VSNs also express particular patterns...
Fermentative hydrogen production from waste activated sludge (WAS) has low H2 yield because WAS contains limited amounts of carbohydrate suitable for use by hydrogen-producing bacteria. Here, augmentation of hydrogen production from WAS by microbial electrolysis cells (MECs) was implemented. H2 yields of 3.89±0.39 mg-H2/g-DS (5.67±0.61 mg-H2/g-VSS) from raw WAS and 6.78±0.94 mg-H2/g-DS (15.08±1...
This study describes the relationships between dinitrogen (N2 ) fixation, dihydrogen (H2 ) production, and electron transport associated with photosynthesis and respiration in the marine cyanobacterium Trichodesmium erythraeum Ehrenb. strain IMS101. The ratio of H2 produced:N2 fixed (H2 :N2 ) was controlled by the light intensity and by the light spectral composition and was affected by the gro...
Photoproduction of H2 and activation of H2 for CO2 reduction (photoreduction) by Rhodopseudomonas capsulata are catalyzed by different enzyme systems. Formation of H2 from organic compounds is mediated by nitrogenase and is nto inhibited by an atmosphere of 99% H2. Cells grown photoheterotrophically on C4 dicarboxylic acids (with glutamate as N source) evolve H2 from the C4 acids and also from ...
We present a determination of themolecular gas mass in the AUMicroscopii circumstellar disk. Direct detection of a gas component to the AUMic disk has proven elusive, with upper limits derived from ultraviolet absorption line and submillimeter CO emission studies. Fluorescent emission lines of H2, pumped by theO vi k1032 resonance line through the CYX (1Y1) Q(3) k1031.87 8 transition, are detec...
Non-flagellate H2 mutants were isolated from a phase-2 stable strain, SJW806 H1-gt- H2-enxon vh2-, a derivative of Salmonella typhimurium. By transductional crosses a deletion map and a recombination map of the H2 gene were made. There are three regions especially rich in nonflagellate mutational sites. By the use of the deletion map, mutational sites of 21 flagellar shape mutants were also det...
The effect of H2 on isomerization pathways and on the acid site density on WOx-ZrO2 catalysts was explored using kinetic measurements of acid-catalyzed o-xylene isomerization reactions. Initial o-xylene isomerization rates on WOx-ZrO2 at 523 K are proportional to the H2 concentration even though H atoms are not involved directly in reaction turnovers, as shown by the low deuterium content in th...
در این پژوهش خواص الکترونی و ترابردی برای دو مولکول پنتاسین و پرفلوروپنتاسین با استفاده از محاسبات اصول اولیه بر مبنای نظریۀ تابعی چگالی و تابع گرین غیر تعادلی انجام شد. نتایج نشان داد که جایگزینی فلوئور به جای هیدروژن در پنتاسین باعث کاهش گاف HOMO-LUMO در حدود 0.2 الکترون ولت میشود که قابل مقایسه با نتایج دیگران است. بیشترین مشارکت چگالی حالتها حول انرژی فرمی برای هر دو مولکول مربوط به اربیت...
در این کار جذب سه مولکول گازکربن مونوکسید بر روی پایدارترین نانولوله نقص دار (استون – والز) بور نیترید B64N64H16 با فرم زیگزاگ(8،0) با روش های محاسبه ایی نظریه تابع چگال بررسی شد. برای بهینه کردن جداگانه ی هریک از ساختارهای اولیه نانو لوله بور نیترید و CO و همچنین جهت بررسی جذب گاز CO، روش و مجموعه پایه B3LYP/6-31G به کار رفته است. هفت مکان جذبی برای بررسی بر هم کنش گاز با ساختار نانو در نظر گر...
Calponin is an actin filament-associated protein and its h2 isoform inhibits cell motility. Here we report significant expression of h2-calponin in prostate epithelial cells, which is diminished in cancerous cells. Comparison between a prostate cancer cell line PC3 and its metastatic derivative PC3-M showed lower levels of h2-calponin in PC3-M, corresponding to faster rates of cell proliferatio...
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