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759 Result(s)
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Article
Studies on the maximum permissible concentration of tetrachlorvinphos in surface water
By a series of toxicological experiments, including studies on chronic toxicity, teratogenesis and reproduction, Ames’ assay and carcinogenic observation, the non-effective level of tetrachlorvinphos (TCVP) wa...
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Chapter
Studies on Embryogenesis of Woody Plants in China
During the last decade induction of somatic embryogenesis has been carried out in a number of plant species in China. Several features of embryogenesis of woody plants are described. The embryogenesis should g...
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Article
A Study on the Mechanism for the Influence of High Density of Defect Movement on the Leakage Current of PN Junction
The results in the paper show that high defect density appears during rapid thermal annealing. The spreading of the defect distribution increases with increasing of the annealing time. So the leakage current i...
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Chapter and Conference Paper
Prevention of Islanding Operation in Utility Interactive Photovoltaic Systems
A new method to prevent the islanding mode of utility interactive inverters has been introduced. By properly choosing the inverter feedback control loop construction and parameters, the inverter frequency can ...
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Article
Determination of rare earths and other trace elements in samples of Antarctica by neutron activation analysis
The concentrations of REE and other trace elements have been determined in samples of Antarctica by Instrumental Neutron Activation Analysis (INAA). The samples were collected from the West Lake area near Grea...
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Article
Investigation into thin films under microgravity
Thin films are interesting for practical as well as for theoretical reasons. As fluid science and materials science in space have been develo** rapidly in recent years, investigation into thin films under mi...
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Chapter
Studies on the Propagules Used for Artificial Seeds
A propagation system for induction of both adventitious buds and embryoids was established in 9 species of 7 families. It was found that the conversion percentage of artificial seeds, produced using adventitio...
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Article
ESR dating of fluvial sediments using Ge center in quartz
Using the Ge centers of quartz sediments, the buried ages of fluvial sediments were determined by ESR technique. The ESR ages obtained from Ge centers are consistent with the TL ages, correspond with their hor...
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Article
ESR dating of coral reefs in the South China Sea
ESR dating of aragonitic and calcitic corals, eolianite, calcrete, and corallineae from coral reefs in the South China Sea was applied to study of Quaternary reef geology. The ESR ages of calcitic corals corre...
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Article
A new type of wear resistant austenite-bainite steel with granular carbides modified by boron and cerium rare earth
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Article
Cast Cr12MoV die steel with granular carbide modified by Re-Mg compound
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Chapter
Climatic Warming and its Impact on the Water Resources of the Yalong River, China
The water resources of the Yalong River basin may be affected by variations in air temperature and precipitation. In this paper, the impact has been estimated by using the Langbein model, the Turc model, a non...
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Article
Improvement of the microstructure and mechanical properties of M2 cast high speed steel by modification
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Chapter and Conference Paper
A two-way BSP algorithm for tridiagonal systems
A two-way parallel recursive method is presented for solving a tridiagonal linear system. The algorithm is based on the parallel segment recursive method proposed in [9]. The computation and communication cost...
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Article
Formation and growth of fractal patterns in high energy P+-implanted silicon and N+Zn-implanted SiO2/GaAsP during thermal annealing
The fractal patterns in implanted samples are observed. Possible correlation of fractal patterns with the annealing temperature and the electrical activation ratio are given. The formation and growth process o...
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Article
Control of solidification structure of wear-resistant austenite-bainite polyphase steel with nodular eutectic
A new austenite-bainite polyphase steel with nodular carbides can be obtained by controlling the solidification structure of the steel melt, which only contains manganese and silicon, with modification of Si-C...
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Article
Polishing technology of surface for diamond film using the method of laser ablation
Good unity in thickness and a smooth surface of diamond film are obtained by using the methods of laser ablation and machine grind to the surface of diamond film. Compared with the machine polishing method, th...
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Article
Twenty cases of diabetic gastric retention treated by Dachengqi Decoction )
Objective: To study the effect of Dachengqi Decoction in Treating diabetic gastric retention.Methods: Twenty Patients of diabetic gastric retention were treated with Dachengqi Decoction with their electrogastrog...
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Article
The corrosion behavior of nano-meter embedded phase in Ti implanted H13 steel
On the SEM micrographs of Ti implanted H13 steel, a tree-branch-like structure can be observed. Further investigation with TEM shows that the newly formed composition is a formation of nano-meter FeTi2 phase in T...
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Article
Transportation of passive scalar in inhomogeneous turbulence
The paper studies the transportation of passive scalar in the inhomogeneous turbulence by means of large eddy simulation. The prediction accuracy is verified by the well-known Comte-Bellot spectrum of the homo...