نتایج جستجو برای: tpd
تعداد نتایج: 1177 فیلتر نتایج به سال:
Reflection absorption infrared spectroscopy (RAIRS) and temperature programmed desorption (TPD) have been used to investigate the adsorption of methanol (CH(3)OH) on the highly oriented pyrolytic graphite (HOPG) surface. RAIRS shows that CH(3)OH is physisorbed at all exposures and that crystalline CH(3)OH can be formed, provided that the surface temperature and coverage are high enough. It is n...
The formation of soot particles in combustion depends on several factors that include: pressure, temperature, fuel chemical structure and extent of premixing. An improved version of the thermophoretic particle densitometry (TPD) method, has been used in this study for quantitative and qualitative characterization of soot particles generated in laminar partially-premixed co-flow flames having di...
The overlayer growth of cobalt on Mo(ll0) and the adsorption of CO and deuterium on Co/Mo(llO) have been studied by Auger electron spectroscopy (AES), low-energy electron diffraction (LEED) and temperature-programmed desorption (TPD). Co grows layer by layer on Mo(ll0) at a sample temperature of 115 K. Annealing multilayers of Co on Mo(ll0) to > 400 K results in the formation of three-dimension...
During most of the year, diatom production in ice-covered Central Arctic Ocean (CAO) is limited by light availability and nutrient supply. Therefore, biological thought to be generally low, with higher at sea ice edge over partially ice-free shelf areas. The major surface ocean current CAO Transpolar Drift (TPD), which transports water from rivers shelves Laptev East Siberian Seas across toward...
Temperature-programmed desorption (TPD) experiments have been conducted to investigate enantiospecific desorption from chiral single-crystal surfaces. The (643) and (six four three) planes of face-centered cubic metals such as Cu have kinked and stepped structures which are nonsuperimposable mirror images of one another and therefore are chiral. These chiral surfaces are denoted Cu(643)(R) and ...
B-doped Si~001! films, with concentrations CB up to 1.7310 22 cm, were grown by gas-source molecular-beam epitaxy from Si2H6 and B2H6 at Ts5500– 800 °C. D2 temperature-programed desorption ~TPD! spectra were then used to determine B coverages uB as a function of CB and Ts . In these measurements, as-deposited films were flash heated to desorb surface hydrogen, cooled, and exposed to atomic deut...
Regeneration of the coked catalyst is an important process of fluid catalytic cracking (FCC) in petroleum refining, however, this process will emit environmentally harmful gases such as nitrogen and carbon oxides. Transformation of N and C containing compounds in industrial FCC coke under thermal decomposition was investigated via TPD and TPO to examine the evolved gaseous species and TGA, NMR ...
TOPLESS (TPL) and TOPLESS-related (TPR) proteins comprise a conserved family of plant transcriptional corepressors that are related to Tup1, Groucho, and TLE (transducin-like enhancer of split) corepressors in yeast, insects, and mammals. In plants, TPL/TPR corepressors regulate development, stress responses, and hormone signaling through interaction with small ethylene response factor-associat...
A novel copper-catalyzed oxidation of arene-fused cyclic amines to the corresponding cyclic imides has been developed. The reaction can be used to synthesize 1,3-disubstituted TPD in high yields.
Anorexia Nervosa (AN) patients have a disturbed experience of body size and shape. Previously it has been shown that these body representation disturbances extend to enlarged perception of tactile distances. Here we investigated whether misperception of tactile size could be related to inaccurate elementary somatosensory perception. Tactile size perception was measured with the Tactile Estimati...
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