搜索结果: 1-15 共查到“Silicate”相关记录71条 . 查询时间(0.078 秒)
Presolar silicate grains: Abundances, isotopic and elemental compositions, and the effects of secondary processing
presolar grains silicates nucleosynthesis isotopes AGB stars
2017/4/10
Close to a thousand presolar silicate grains have been identified since their initial discovery in interplanetary dust
particles (IDPs) just over ten years ago. Studies have shown that silicates are ...
Volatile diffusion in silicate melts and its effects on melt inclusions
diffusion silicate melts volatiles water carbon dioxide sulfur fluorine igneous processes chlorine melt inclusion
2015/9/10
A compendium of diffusion measurements and their Arrhenius equations for water, carbon dioxide, sulfur, fluorine,
and chlorine in silicate melts similar in composition to natural igneous rocks is pre...
Noble gas solubility in silicate melts:a review of experimentation and theory, and implications regarding magma degassing processes
noble gases solubility degassing silicate melts
2015/9/10
Noble gas solubility in silicate melts and glasses has gained a crucial role in Earth Sciences investigations and
in the studies of non-crystalline materials on a micro to a macro-scale. Due to their...
Polymerisation, basicity, oxidation state and their role in ionic modelling of silicate melts
polymerisation basicity oxidationstate water speciation Temkin model
2015/9/10
In order to describe and quantify the reactivity of silicate melts, the ionic notation provided by the Temkin formalism
has been historically accepted, giving rise to the study of melt chemical equil...
Chemical interactions and configurational disorder in silicate melts
silicate melts structure entropy unmixing
2015/9/10
The Thermodynamics of quasi-chemical and polymeric models are briefly reviewed. It is shown that the two
classes are mutually consistent, and that opportune conversion of the existing quasi-chemical ...
Acid-base properties and structons: towards a structural model for predicting the thermodynamic properties of silicate melts
silicate melt acid-base oxide melt thermodynamic properties
2015/9/10
Phase equilibrium relationships in igneous systems can be estimated using empirical mathematical models based on
multi-component regular solution formulae. Although these provide useable results with...
IRAS 15099-5856: Remarkable Mid-Infrared Source with Prominent Crystalline Silicate Emission Embedded in the Supernova Remnant MSH15-52
spectra supernova explosion
2014/12/20
We report new mid-infrared observations of the remarkable object IRAS 15099-5856 using the space telescopes AKARI and Spitzer, which demonstrate the presence of prominent crystalline silicate emission...
Pb isotope analyses of silicate rocks and minerals with Faraday detectors using enhanced-sensitivity laser ablation-multiple collector-inductively coupled plasma mass spectrometry
laser ablation Pb isotopes MC-ICP-MS glass melt inclusion plagioclase clinopyroxene
2017/4/11
We present analytical protocols and the analytical performance of Pb isotope analysis of silicate minerals and rocks at
the Pb = 0.02–15 ppm level using excimer laser ablation (LA) coupled with an en...
Asymmetric PSt-EA/Ni-Silicate hollow microsphere with a hierarchical porous shell
Hollow microspheres half spherical nucleus porous layer heat and water transfer reaction
2015/3/26
Novel asymmetric hollow microspheres with polystyrene-ethylacrylate (PSt-EA) semi-spherical cores and porous hierarchical Ni-Silicate shells have been successfully fabricated by the combination of emu...
Economic route to sodium-containing silicate bioactive glass scaffold
Sand Alkoxysilanes Carbonated Hydroxyapatite Simulated Body Fluid Bone Regeneration
2013/1/31
Tetraethyl orthosilicate (TEOS) and trimethyl orthosilicate (TMOS) alkoxysilanes are expensive common precursors for silicate based solgel derived bioactive glasses. Facile approa- ches involving low ...
Applying SEM-EDX and XRD Techniques to Demonstrate the Overgrowth of Atmospheric Soot and Its Coalescence with Crystal Silicate Particles in Delhi
Scanning Electron Microscope Energy Dispersive X-Ray Soot Aerosols Overgrowth Delhi
2013/2/26
Scanning electron microscopy-energy dispersive X-ray analysis (SEM-EDX) and X-ray diffraction (XRD) systems were used to demonstrate the overgrowth of soot to fractal like structure and its subsequent...
Elastic Tensor and Thermodynamic Property of Magnesium Silicate Perovskite from First-principles Calculations
Thermodynamic property Elastic property MgSiO3 perovskite
2012/4/5
The thermodynamic and elastic properties of magnesium silicate (MgSiO3) perovskite at high pressure are investigated with the quasi-harmonic Debye model and the first-principles method based on the de...
160-to-40Gibt/s Time Demultiplexing in a low dispersion Lead-Silicate W-Index Profile Fiber
Nonlinear optics Nonlinear optics four-wave mixing
2015/5/22
A 2.2m long sample of lead-silicate W-index profile fiber with nonlinear coefficient of 820W -1 km -1 and exhibiting low and flat dispersion across the C-band is used in an all-optical 160-to-40Gbit/s...
Characterisation of the inner structure and surface of nanoporous sodium-borate-silicate glasses
anoporous glass, X-ray phase analysis of microcrystals, gas adsorption, surface adsorption sites, characteristic IR spectra of the glass surface
2011/4/27
Results of investigations are reported which have been carried out with use of some physical and chemical techniques on the nanoporous sodium-borate-silicate glasses with pore sizes within 5–100 nm. P...
基于Silicate-1型分子筛修饰的QCM类神经毒气传感器
Silicate-1分子筛 QCM DMM 气敏传感器
2014/4/30
本文主要研究Silicate-1型纳米分子筛对类神经毒气有机气体甲基磷酸二甲酯(DMMP)的敏感特性，并结合高灵敏度的石英谐振天平（QCM）研制了DMMP气体传感器。采用Silicate-1型纳米分子筛作为敏感膜材料分别对不同浓度的DMMP气体进行检测。QCM传感器随着气体浓度的增加，响应时间增加，气体吸附量增加；当DMMP浓度为50ppm，QCM响应频率为50Hz。分别采用水汽，300ppmCO...