39 Result(s)
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Article
Yutian Wang
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Article
Overview of a theory and method for prediction of mineral resources in China
A set of theories and methods has long been needed to enhance geological prospecting. Since 1982, we have been predicting mineral-resource potential based on geological research in China, using a comprehensive...
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Article
Information structure analysis for quantitative assessment of mineral resources and the discovery of a silver deposit
We propose an information-structure-analysis (ISA) method to quantify the correlations between quantitative and qualitative variables as well as within each type of variable. This method is applied to the eval...
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Article
Properties of GaAs single crystals grown by molecular beam epitaxy at low temperatures
Properties of GaAs single crystals grown at low temperatures by molecular beam epitaxy (LTMBE GaAs) have been studied. The results show that excessive arsenic atoms of about 1020 cm−3 exist in LTMBE GaAs in the f...
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Structures of an asymmetrically coupled double-well superlattice by double-crystal X-ray diffraction
An asymmetrically coupled (GaAs/AlAs/GaAs/AlAs)/GaAs (001) double-well supperlattice is studied by HRDCD (high resolution double-crystal X-ray diffractometry). The intensity of satellite peaks is modulated by ...
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Article
Mosaic Structure and Cathodoluminescence of GaN Epilayer Grown by LP-MOVPE
We have studied the growth of GaN on (0001) sapphire and (111) spinel substrates by LP-MOVPE and compared the mosaic structure and cathodoluminescence for the heteroepitaxial films of GaN grown on these substr...
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Double crystal X-ray diffraction study of MBE self-organized InAs quantum dots
A series of GaAs/InAs/GaAs samples were studied by double crystal X-ray diffraction and the X-ray dynamic theory was used to analyze the X-ray diffraction results. As the thickness of InAs layer exceeds 1.7 mo...
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Annealing behavior of hexagonal phase content in cubic GaN thin films grown on GaAs (001) by MOCVD
The annealing behavior of the hexagonal phase content in cubic GaN (c-GaN) thin Films grown on GaAs (001) by MOCVD is reported. C-GaN thin films are grown on GaAs (001) substrates by metalorganic chemical vapo...
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Article
The formation and stability of Si1-xC x alloys in Si implanted with carbon ions
Si1-xCx alloys of carbon (C) concentration between 0.6%–1.0% were grown in Si by ion implantation and high temperature annealing. The formation of Si1-xC x alloys under differen...
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Multiplicity factor and diffraction geometry factor for single crystal X-ray diffraction analysis and measurement of phase content in cubic GaN/GaAs(001) epilayers
On the basis of integrated intensity of rocking curves, the multiplicity factor and the diffraction geometry factor for single crystal X-ray diffraction (XRD) analysis were proposed and a general formula for c...
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Thickness measurement of GaN epilayer using high resolution X-ray diffraction technique
In this paper we propose a new method for measuring the thickness of the GaN epilayer, by using the ratio of the integrated intensity of the GaN epilayer X-ray diffraction peaks to that of the sapphire substra...
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Article
Influence of growth pressure of a GaN buffer layer on the properties of MOCVD GaN
The influence of growth pressure of GaN buffer layer on the properties of MOCVD GaN on α-Al2O3 has been investigated with the aid of a home-made in situ laser reflectometry measurement system. The results obtaine...
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Article
Detection of Survivin mRNA in nasopharyngeal carcinoma by real-time fluorescence quantitative RT-PCR
To establish the method of real time fluorescence quantitative RT-PCR for detecting the expression of Survivin mRNA in nasopharyngeal carcinoma (NPC) tissues.
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Silver coordination polymers with remarkably high packing coefficients
Silver meso- and rac-tartrate and silver squarate have been synthesized, and the crystal structure of a new polymorph of the latter is reported. Three reaction products of these silver salts with pyrazine have be...
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Rare earth do** effect on the optical properties of several fluorescence materials
Based on the optical properties of rare earth fluorescence materials, a set of fluorescence optical fiber systems was designed. The system selects the emitting LED, which is economical and practical as a light...
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Open AccessMagnetic Mn5Ge3 nanocrystals embedded in crystalline Ge: a magnet/semiconductor hybrid synthesized by ion implantation
The integration of ferromagnetic Mn5Ge3 with the Ge matrix is promising for spin injection in a silicon-compatible geometry. In this paper, we report the preparation of magnetic Mn5Ge3 nanocrystals embedded insid...
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Article
Open AccessHAI-178 antibody-conjugated fluorescent magnetic nanoparticles for targeted imaging and simultaneous therapy of gastric cancer
The successful development of safe and highly effective nanoprobes for targeted imaging and simultaneous therapy of in vivo gastric cancer is a great challenge. Herein we reported for the first time that anti-α-s...
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Variations in the microstructure and properties of Mn-Ti multiple-phase steel with high strength under different tempering temperatures
There are few relevant researches on coils by tempering, and the variations of microstructure and properties of steel coil during the tempering process also remain unclear. By using thermo-mechanical control p...
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Article
Open AccessCarbon p Electron Ferromagnetism in Silicon Carbide
Ferromagnetism can occur in wide-band gap semiconductors as well as in carbon-based materials when specific defects are introduced. It is thus desirable to establish a direct relation between the defects and t...
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Open AccessMagnetic interactions in BiFe0.5Mn0.5O3 films and BiFeO3/BiMnO3 superlattices
The clear understanding of exchange interactions between magnetic ions in substituted BiFeO3 is the prerequisite for the comprehensive studies on magnetic properties. BiFe0.5Mn0.5O3 films and BiFeO3/BiMnO3 superl...
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Bioluminescence Imaging of Colonization and Clearance Dynamics of Brucella Suis Vaccine Strain S2 in Mice and Guinea Pigs
The goal of this study was to develop a plasmid-based lux bio-reporter for use to obtain in vivo images of Brucella suis vaccine strain 2 (B.suis S2) infection with high resolution and good definition.
