搜索结果: 136-150 共查到“理学 Expansion”相关记录152条 . 查询时间(0.18 秒)
Thermal Expansion Contribution to the Temperature Dependence of Excitonic Transitions in GaAs and AlGaAs
Thermal Expansion the Temperature Dependence Excitonic Transitions GaAs and AlGaAs
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2010/10/21
Photoluminescence and photoreflectance measurements have been used to determine excitonic transitions in the ternary AlxGa1−xAs alloy in the temperature range from 2 to 300 K. The effect of the ...
On the Asymptotic Expansion of Bergman Kernel
Asymptotic Expansion Bergman Kernel
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2018/4/20
We study the asymptotic of the Bergman kernel of the spinc Dirac operator on high tensor powers of a line bundle.
East Model: Basis Set Expansion, Mode Coupling, and Irreducible Memory Kernels
East Model Basis Set Expansion Mode Coupling Irreducible Memory Kernels
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2014/9/24
A matrix formalism defined in the complete dynamic phase space is developed to analyze spin relaxation in the East model and the dynamic slow-down of dissipative systems in general. The truncated basi...
Parity considerations in the expansion of Fermat-Pell polynomials
Parity considerations expansion Fermat-Pell polynomials
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2010/11/1
For each positive integer $n$ it is shown how to construct a finite collection of multivariable polynomials $\{F_{i}:=F_{i}(t,X_{1},..., X_{\lfloor \frac{n+1}{2} \rfloor})\}$ such that each positive ...
Thermal expansion of silicate liquids: Direct determination using container-based dilatometry
silicate liquids container-based dilatometry thermal expansion
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2012/3/31
The expansivity of a silicate melt in the relaxed liquid state was obtained by direct dilatometric
measurement for the first time. During the measurement, the liquid sample resides within a metal
co...
Thermal expansion of MgSiO3 and FeSiO3 ortho- and clinopyroxenes
Thermal expansion MgSiO3 FeSiO3 ortho- clinopyroxenes
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2012/4/5
Unit-cellparametersofsynthetic(Mg,Fe)SiO ortho-andclinopyroxenesweredeter-minedatregularintervalsinthetemperaturerange293¤C1094KusingpowderX-ra
diffractiontechniques.Volumethermalexpansioncoef?cients...
Hydrogen positions and thermal expansion in lizardite-1T from Elba: A low-temperature study using Rietveld refinement of neutron diffraction data
Hydrogen positions thermal expansion lizardite-1T Elba low-temperature study neutron diffraction data
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2012/4/6
Thestructure oflizardite-l Tfrom MonteFico,Elba,wasrefined in spacegroupP31m usingneutron diffractiondata, measuredat 8, 150,and 294K,and full-profile Rietveld
refinement techniques. Thelattice param...
Thermal expansion of gypsum investigated by neutron powder diffraction
Thermal expansion gypsum investigated neutron powder diffraction
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2012/4/6
The cell parameters of deuterated gypsum have been extracted from Rietveld anal-ysis of powder neutron diffraction data within the temperature range 4.2-320 K.The thermal expansion of gypsum is highly...
Volume behavior of hydrous minerals at high pressure and temperature: I. Thermal expansion of lawsonite, zoisite, clinozoisite, and diaspore
Volume behavior of hydrous minerals high pressure temperature lawsonite zoisite clinozoisite diaspore
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2012/4/5
The temperature dependence of the lattice parameters of synthetic lawsonite [Ca-A12Si207 (OH)2 .H20], natural zoisite [Ca2A13 Si30'2(OH)], natural clinozoisite
[Ca2Al3Si3012(OH)], and synthetic diasp...
A Technique for Maintaining Texture and Permanent Expansion of Smectite Interlayers for TEM Observations
Illite LR White resin R1 I/S Rectorite Smectite Transmission electron microscopy (TEM)
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2011/12/1
Abstract: A process for treating smectite-bearing rock samples that utilizes LR White resin; allows TEM observation of expanded smectite interlayers and therefore preservation of original rock texture...
Effect of 1,4-Dioxane on the Expansion of Montmorillonite Layers in Montmorillonite/Water Systems
1,4-dioxane Layer expansion Montmorillonite Swelling
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2011/12/28
Suspensions were produced by mixing Na-saturated, Upton montmorillonite with aqueous solutions containing different concentrations of 1,4-dioxane. Each suspension was deposited on a porous ceramic fil...
Effects of Layer Charge, Charge Location, and Energy Change on Expansion Properties of Dioctahedral Smectites
Charge location Ethylene glycol Expanded phase Expansion energy Glycerol Layer charge Relative humidity Smectite
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2011/12/1
Abstract: Expansion properties of ten homoionic smectites that differed in amount and location of layer charge were examined by X-ray powder diffraction analysis at various relative humidities, or aft...
Effects of Relative Humidity on the Basal Expansion of Mg-Smectite Equilibrated with Ethylene Glycol at Low Vapor Pressure
Basal expansion Ethylene glycol Relative humidity Smectite X-ray powder expansion
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2012/1/6
The effects of relative humidity (RH) on the expansion of Mg-smectite, equilibrated with low vapor pressure of ethylene glycol (EG), was studied. Four smectite samples were equilibrated with EG vapor ...
Expansion of Smectite by Laurylamine Hydrochloride: Ambiguities in Transmission Electron Microscope Observations
Expansion Illite Lattice fringe images Laurylamine hydrochloride Smectite Transmission electron microscopy
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2011/11/25
Abstract: Treatment of smectite with laurylamine hydrochloride was verified to cause expansion of d(001) which may be retained and observed in ion-milled samples by transmission electron microscopy. T...
Effects of Exchangeable Cation Composition on the Thermal Expansion/Contraction of Clinoptilolite
Clinoptilolite Dehydration Exchangeable cation Thermal expansion X-ray powder diffraction Zeolite
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2012/2/6
To understand and predict the effects of a thermal pulse induced by a radioactive waste repository on clinoptilolite-bearing rocks, the lattice parameters of 6 natural and 3 cation-exchanged (Ca, K, N...