搜索结果: 1-15 共查到“理学 Silicate”相关记录54条 . 查询时间(0.088 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...
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...
Multi-technique equation of state for Fe2SiO4 melt and the density of Fe-bearing silicate melts from 0 to 161 GPa
Multi-technique e-bearing silicate melts
2014/4/8
We have conducted new equation of state measurements on liquid Fe2SiO4 in a
collaborative, multi-technique study. The liquid density (r), the bulk modulus (K), and its
pressure derivative (K′) were ...
Multi-technique equation of state for Fe2SiO4 melt and the density of Fe-bearing silicate melts from 0 to 161 GPa
Multi-technique e-bearing silicate melts
2014/4/8
We have conducted new equation of state measurements on liquid Fe2SiO4 in a
collaborative, multi-technique study. The liquid density (r), the bulk modulus (K), and its
pressure derivative (K′) were ...
Oxygen three-isotope ratios of silicate reference materials determined by direct comparison with VSMOW-oxygen
oxygen three-isotope ratios silicate reference materials VSMOW-SLAP normalization terrestrial fractionation line BrF5 fluorination
2017/8/10
The δ17O and δ18O values of some international silicate reference materials such as NBS-28 quartz, NBS-30 biotite, UWG2 garnet, San Carlos olivine and some mineral separates of terrestrial origin were...
Experimental study on tin partition between granitic silicate melt and coexisting aqueous fluid
experimental study tin partition granitic silicate melt aqueous fluidonment
2017/8/10
The distribution of tin between different granitic silicate melts and coexisting aqueous fluids have been determined at 850°C, 100 MPa and fO2 near NNO. Tin distribution coefficients are constrained ...
Revisiting silicate authigenesis in the Pliocene–Pleistocene Lake Tecopa beds, southeastern California: Depositional and hydrological controls
saline, alkaline lake, Pliocene–Pleistocene, zeolite, depositional facies, authigenic minerals
2011/11/14
The Pliocene–Pleistocene Lake Tecopa beds present a well-documented example of authigenic silicate diagenesis in an ancient saline, alkaline lake environment. Controls on authigenic mineral formation ...
Direct Hydrothermal Synthesis of Palladium-Incorporated Silicate-Structured Mesoporous Catalysts
Mesoporous catalysts MCM-41 Pd hydrothermal synthesis reforming
2010/4/16
Pd-Si-structured novel mesoporous nanocomposite catalytic materials, having quite high Pd/Si ratios, were synthesized by an acidic direct hydrothermal synthesis route. The nanocomposite catalytic mate...