نتایج جستجو برای: were 0025 m h2so4
تعداد نتایج: 3824851 فیلتر نتایج به سال:
Sulfuric acid is widely recognized as a very important substance driving atmospheric aerosol nucleation. Based on quantum chemical calculations it has been suggested that the quantitative detection of gas phase sulfuric acid (H2SO4) by use of Chemical Ionization Mass Spectrometry (CIMS) could be biased in the presence of gas phase amines such as dimethylamine (DMA). An experiment (CLOUD7 campai...
UNLABELLED BACKGROUND Green catalyst fly ash: H2SO4 was prepared by mixing fly ash and sulphuric acid. Microwave irradiations are applied for solid phase cyclization of 5-bromo-2-thienyl chalcones and phenyl hydrazine hydrate in the presence of fly ash: H2SO4 yields, 1-phenyl-3(5-bromothiophen-2-yl)-5-(substituted phenyl)-2-pyrazolines. These pyrazolines were characterized by their physical ...
[1] Using a kinetic model, we estimate the time-needed (t0) to establish a pseudo-steady state nucleation when sulfuric acid concentration ([H2SO4]) suddenly increases to a certain fixed level. We find that t0 is roughly inversely proportional to [H2SO4]. The assumption of instantaneously achieved pseudo-steady state concentration of critical clusters, on which the classical nucleation theories...
Effective atom-atom potentials are developed for binary sulfuric acid-water clusters and applied in a Bennett Metropolis Monte Carlo calculation to determine free energy differences for small neighboring sized clusters of fixed composition at 298 K. The atom-atom pair potentials consist of Lennard-Jones short-range and Coulombic long-range terms and assume rigid SO4 with two unconstrained Hδ+ a...
The Medical Journal of Australia ISSN: 0025-729X 15 March 2010 192 6 328333 ©The Medical Journal of Australia 2010 www.mja.com.au Medicine and the community mediated by factors other than compensation, and these factors may or may not be relevant to other compensation populations. In one of the few studies to examine the relations ip between compensation and recovery in a non-workers-compensati...
Corrosion resistance of AA1070 aluminum alloy (AA1070) was compared to reinforced with alumina at weight composition (wt. %) 5% and 10%, grain size 150 nm 600 nm. Potentiodynamic polarization open circuit potential analysis were employed in 0.0125 M H2SO4, 3.5% NaCl H2SO4-3.5% solutions. Data showed solution the most deleterious peak corrosion rate value 6.682 mm/y while weakest 0.084 mm/y. wt....
Department of General Practice, Flinders University, Adelaide, SA. Bronwyn M Veale, PhD, FRACGP, FAFPHM Adjunct, Senior Lecturer. Reprints will not be available from the author. Correspondence: Dr Bronwyn M Veale, 3 Pages Road, Mitcham, SA 5062. [email protected] The Medical Journal of Australia ISSN: 0025-729X 1 September 2003 179 5 247-249 ©The Medical Journal of Australia 2003 www.mja.c...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید