نتایج جستجو برای: 05 n2 0086 c5h7o2n 0697 h 0421 h2s 0421 hs
تعداد نتایج: 642752 فیلتر نتایج به سال:
The emission lines in the active galaxy IRAS 0421+0400 show a dramatic (≈ 900 kms −1) increase in the velocity spread at the position of radio hotspots which are located at the beginning of extended radio lobes. We study a model which explains this phenomenon as the result of a jet emerging through the boundary between the interstellar and intergalactic medium. A similar scenario has previously...
The rates of H2S and HS(-) transport across the human erythrocyte membrane were estimated by measuring rates of dissipation of pH gradients in media containing 250 μM H2S/HS(-). Net acid efflux is caused by H2S/HS(-) acting analogously to CO2/HCO3(-) in the Jacobs-Stewart cycle. The steps are as follows: 1) H2S efflux through the lipid bilayer and/or a gas channel, 2) extracellular H2S deproton...
Adsorption and thermal decomposition of H2S on Si(1 0 0)-2 1 are studied by means of temperature-programmed desorption (TPD) and X-ray photoemission spectroscopy (XPS) with synchrotron radiation. The H2S molecule dissociates to form H and HS on the Si surface at adsorption temperature of 115 K. The Si(1 0 0)-2 1 surface structure is conserved upon the adsorption of H2S due to bonding of dissoci...
Hydrogen sulfide (H2S) is an important signaling molecule that exerts action on various bioinorganic targets. Despite this importance, few studies have investigated the differential reactivity of the physiologically relevant H2S and HS(-) protonation states with metal complexes. Here we report the distinct reactivity of H2S and HS(-) with zinc(II) and cobalt(II) phthalocyanine (Pc) complexes an...
Hydrogen sulfide (H2S) is an attractive agent for myocardial ischemia-reperfusion injury, however, systemic delivery of H2S may cause unwanted side effects. Ultrasound targeted microbubble destruction has become a promising tool for organ specific delivery of bioactive substance. We hypothesized that delivery of H2S by ultrasound targeted microbubble destruction attenuates myocardial ischemia-r...
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