نتایج جستجو برای: nitrogen oxide
تعداد نتایج: 288802 فیلتر نتایج به سال:
Nitric oxide is a cellular messenger produced by different cell types in an organism, both in physiological and pathological conditions (Snyder 1993; Beckman and Koppenol 1996; Beckman and Koppenol 1996; Beckman 1996; Colasanti and Suzuki 2000; Pacher, Beckman, and Liaudet 2007). Nitric oxide was first described in biology as the endothelium-derived relaxation factor for its effects on vasodila...
A patient with acute respiratory failure secondary to leptospirosis was treated with 40 and 90 volumes per million inhaled nitric oxide. His serum nitrogen oxide concentration (nitrates and nitrites combined) increased 13-fold. The mechanisms for the formation and elimination of nitrates are discussed.
Two new cell-trappable fluorescent probes for nitric oxide (NO) are reported based on either incorporation of hydrolyzable esters or conjugation to aminodextran polymers. Both probes are highly selective for NO over other reactive oxygen and nitrogen species (RONS). The efficacy of these probes for the fluorescence imaging of nitric oxide produced endogenously in Raw 264.7 cells is demonstrated.
Elevated levels of nitric oxide (NO) in vivo are associated with a variety of cellular modifications thought to be mutagenic or carcinogenic. These processes are likely mediated by reactive nitrogen species (RNS) such as nitrogen dioxide (NO2) and peroxynitrite formed from the respective reactions of NO with oxygen and superoxide anion. Controlled delivery of these RNS at levels expected to occ...
Agronomic market development information provided by: Dr. Adrian Johnston Northern Great Plains Region Director Potash & Phosphate Institute (PPI)/ Potash & Phosphate Institute of Canada (PPIC) 12-425 Pinehouse Drive Saskatoon, Saskatchewan, Canada S7K 5K2 Phone: (306) 956-0619 E-mail: [email protected] THE ATMOSPHERIC CONCENTRATIONS of nitrous oxide (N 2 O), carbon dioxide (CO 2 ), and me...
Nitrous oxide fluxes and nitrogen cycling along a pasture chronosequence in Central Amazonia, Brazil B. Wick, E. Veldkamp, W. Z. de Mello, M. Keller, and P. Crill Humboldt University Berlin, Department of Soil Science and Site Science, Invalidenstr. 42, D-10115 Berlin, Germany Institute of Soil Science and Forest Nutrition, Georg August University Göttingen, Büsgenweg 2, D-37077 Göttingen, Germ...
We describe the first satellite observation of intercontinental transport of nitrogen oxides emitted by power plants, verified by simulations with a particle tracer model. The analysis of such episodes shows that anthropogenic NOx plumes may influence the atmospheric chemistry thousands of kilometers away from its origin, as well as the ocean they traverse due to nitrogen fertilization. This ki...
the thermal decomposition of 86 % vinyl chloride 14 % vinyl acetate copolymer wasstudied by the conductometry technique in the presence of nitrogen. the kinetics of stability andthermal degradation of vinyl chloride- co- vinyl acetate (pvc- co- pvac) copolymer withcopper, copper oxide and tricalcium dicitrate (st) were investigated at various temperatures (150-180 oc ) in solution. the rate coe...
Isolation of Pleuropneumonialike Orgauisms from the Throats of Hlumans: Paul F. Smith and Harry E. Morton 623 Atmospheric Nitrous Oxide and the Nitrogen Cycle: Arthur Adel _ 624 An Analog of Vitamin B12: R. P. Buhs, E. G. Newetead, and N. R. Trenner _ 625 Pulmonary Edema and Hemorrhage Induced by Hypothalamic Lesions in Rats: J. E. Gamble and Harry D. Patton ________ 626 Physiological Availabil...
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