搜索结果: 61-75 共查到“理学 oxygen”相关记录231条 . 查询时间(0.141 秒)
Therapeutic Efficacy of Hyperbaric Oxygen on the Severe Acute Mountain Sickness Complicated with MODS
Hyperbaric Oxygen MODS Severe Acute Mountain Sickness Therapy
2011/12/16
Objective: To observe the treatment effects of hyperbaric oxygen on severe acute mountain sickness (ASHS) integrated with multiple organ dysfunction syndromes (MODS). Methods: 2006-2010 admitted to tw...
Revision of the 15N(p,γ)16O reaction rate and oxygen abundance in H-burning zones
physical data processes: nuclear reactions abundances
2011/10/13
The NO cycle takes place in the deepest layer of a H-burning core or shell, when the temperature exceeds T {\simeq} 30 {\cdot} 106 K. The O depletion observed in some globular cluster giant stars, alw...
Stark Broadening of Carbon and Oxygen Lines in Hot DQ White Dwarf Stars: Recent Results and Applications
stars: atmospheric parameters – broadening: Stark
2011/10/9
White dwarf stars are traditionally found to have surface compositions made primarily of hydrogen or helium. However, a new family has recently been uncovered, the so-called Hot DQ white dwarfs, which...
In previous studies, we examined turbulence-flame interactions in carbon-burning thermonuclear flames in Type Ia supernovae. In this study, we consider turbulence-flame interactions in the trailing ox...
Evolution of the Solar Nebula. IX. Gradients in the Spatial Heterogeneity of the Short-Lived Radioisotopes $^{60}$Fe and $^{26}$Al and the Stable Oxygen Isotopes
Evolution Solar Nebula IX. Gradients Spatial Heterogeneity Short-Lived Stable Oxygen Isotopes
2011/9/27
Short-lived radioisotopes (SLRI) such as $^{60}$Fe and $^{26}$Al were likely injected into the solar nebula in a spatially and temporally heterogeneous manner. Marginally gravitationally unstable (MGU...
On the theoretical calculations of oxygen isotope fractionation factors for carbonate-water systems
oxygen isotope fractionation factor carbonate-water system theoretical calculation
2017/4/12
Theoretical and experimental aspects of oxygen isotope fractionation in carbonate minerals are critically examined
based on a direct comparison of fractionation factors for carbonate-water systems. T...
Experimental evidence of a low-oxygen refuge for large zooplankton
Experimental evidence a low-oxygen refuge large zooplankton
2014/4/4
We tested the hypothesis that hypoxic zones in the metalimnion and hypolimnion of lakes can provide a refuge against fish predation for large zooplankton. Experiments were run in a large indoor mesoco...
Oxygen isotopic signature of CO2 from combustion processes
Oxygen isotopic CO2 combustion processes
2011/2/25
For a comprehensive understanding of the global carbon cycle precise knowledge of all processes is necessary. Stable isotope (13C and 18O) abundances provide information for the qualification and the ...
Anthropogenic imprints on nitrogen and oxygen isotopic composition of precipitation nitrate in a nitrogen-polluted city in southern China
nitrogen oxygen isotopic precipitation nitrate a nitrogen-polluted city southern China
2011/2/25
Nitric acid (HNO3) or nitrate (NO3−) is the dominant sink for reactive nitrogen oxides (NOx = NO + NO2) in the atmosphere. In many Chinese cities, HNO3 is becoming a significant contributor to a...
Collateral Effects on Solar Nebula Oxygen Isotopes due to Injection of 26Al by a Nearby Supernova
Solar Nebula Oxygen Isotopes 26Al Nearby Supernova
2011/1/10
Injection of material from a core-collapse supernova into the solar system's already-formed disk is one proposed mechanism for producing the short-lived radionuclides, such as 26Al and 41Ca, inferred ...
Spectroscopic observations of a sample of dwarf spirals galaxies. I.Oxygen abundances
Spectroscopic observations dwarf spirals galaxies
2011/1/13
The oxygen abundances for four dwarf spiral galaxies have been determined using long-slit spectroscopy. The abundances of these galaxies have not previously reported in the literature. Several HII reg...
Atmospheric Oxygen Binding and Hole Doping in Deformed Graphene on a SiO2 Substrate
graphene Raman spectroscopy scanning tunneling microscopy (STM)
2010/11/22
Using micro-Raman spectroscopy and scanning tunneling microscopy, we study the relationship between structural distortion and electrical hole doping of graphene on a silicon dioxide substrate. The obs...
Effect of oxygen plasma etching on graphene studied with Raman spectroscopy and electronic transport
Effect of oxygen plasma Raman spectroscopy electronic transport
2010/11/17
We report a study of graphene and graphene field effect devices after exposure to a series of short pulses of oxygen plasma. We present data from Raman spectroscopy, back-gated field-effect and magnet...
Pt-Decorated PdCo@Pd/C Core-Shell Nanoparticles with Enhanced Stability and Electrocatalytic Activity for Oxygen Reduction Reaction
Core-Shell Nanoparticles Enhanced Stability Electrocatalytic Activity Oxygen Reduction Reaction
2010/11/25
The high cost and scarcity of Pt pose serious problems for the widespread commercialization of fuel cell technologics.1 Recently, Pd-based cathode catalysts have attracted much attention because Pd po...
Critical-doping universality for cuprate superconductors: Oxygen nuclear-magnetic-resonance investigation of Ca(x)La(1-x)Ba(1.75-x)La(0.25+x)Cu(3)O(y)
cuprate superconductors Oxygen nuclear-magnetic-resonance investigation
2010/11/18
The critical doping levels in cuprates, where the ground state changes its nature (from an an-
tiferromagnet to a spin glass to superconductor to metal), are not universal. We investigate the origin ...