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Search Results: 1 - 10 of 32765 matches for " Shao Xi-Bin "
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Magnetic properties and magnetocaloric effects of Mn5G3-xGax

Liu Xi-Bin,Zhang Shao-Ying,Shen Bao-Gen,

中国物理 B , 2004,
Abstract: We report on the magnetic properties and magnetocaloric effects of Mn_5Ge_{3-x}Ga_x compounds with x=0.1, 0.2, 0.3, 0.4, 0.6 and 0.9. All samples crystallize in the hexagonal Mn_5Si_3-type structure with space group P6_3/mcm and order ferromagnetically. The Curie temperature of these compounds decreases with increasing x, from 306K (x=0.1) to 274K (x=0.9). The average Mn magnetic moments increases with increasing Ga content, reaching a maximum value at x=0.6. The magnetic entropy changes in these compounds are determined from the temperature and field dependence of the magnetization using the thermodynamic Maxwell relation. The Ga substitution has two kinds of influence on the magnetocaloric effect (MCE) of Mn_5Ge_3. One is that the magnitude of the magnetic entropy change decreases, the other is that the MCE peak becomes broadened.
Magnetotransport properties and magnetocaloric effects of Mn1.95Cr0.05Sb0.95Ga0.05 compound

Liu Xi-Bin,Zhang Shao-Ying,Shen Bao-Gen,Yao Jin-Lei,Wang Fang,

中国物理 B , 2004,
Abstract:
INVESTIGATION OF THE TEMPERATURE DEPENDENCE OF SURFACE ANCHORING ENERGY FOR LIQUID CRYSTALS
液晶表面锚定能的温度依赖性研究

SUN RUI-PENG,HUANG XI-MIN,SHAO XI-BIN,MA KAI,JING HAI,
孙睿鹏
,黄锡珉,邵喜斌,马凯,荆海

物理学报 , 1996,
Abstract: 通过测量扭曲液晶盒中的液晶分子的实际扭曲角及摩擦方向与液晶分子的界面指向矢之间的方位偏角,用自行建立的液晶方位表面锚定能的测量方法,测定了5CB液晶与摩擦的聚酰亚胺界面的锚定能及其温度依赖性,并用热力学理论进行了分析.实验结果表明,随着温度的增加液晶的表面锚定能Ea是减小的,从25.5℃时的5.0×10-5J/m2减小到35℃时的5.0×10-6J/m2;同时,外推长度de随
A Review on Ways to Increase Discharge and Raise Water Temperature of Deep Geothermal Wells
增加地热井出水量和提高井口水温的方法评述

LI Xi-bin,
李曦滨

地球学报 , 2000,
Abstract: In this paper,some ways to increase discharge and raise water temperature of deep geothernal well are discussed.
Influence of laser passivation on fused silica damage after CO2 laser mitigation
激光钝化对熔石英修复后损伤性能影响的实验研究

Li Xi-Bin,Yuan Xiao-Dong,He Shao-Bo,L&,Hai-Bing,Wang Hai-Jun,Xiang Xia,Zheng Wan-Guo,
李熙斌
,袁晓东,贺少勃,吕海兵,王海军,向霞,郑万国

物理学报 , 2012,
Abstract: 采用10.6 μupm 的 CO2激光, 对单次激光脉冲辐照修复熔石英存在的烧蚀采用大光斑钝化去除. 经过辐照修复的区域置于前表面测试初始损伤阈值, 结果表明调制造成的损伤得到了一定程度的抑制; 辐照区域置于后表面修复后 熔石英的初始损伤阈值超过了基底的初始损伤阈值. 实验观察到了应力分布外扩, 同时明显减弱. 对损伤增长的测试说明, 经过激光熔融辐照后的损伤点, 当应力释放以后, 损伤扩展初期表现出指数增长趋势, 后期随着辐照次数的增加, 损伤增长不再明显, 并且趋于恒定值.
Influence of laser passivation on fused silica damage after CO2 laser mitigation
激光钝化对熔石英修复后损伤性能影响的实验研究

Li Xi-Bin,Yuan Xiao-Dong,He Shao-Bo,L&,Hai-Bing,Wang Hai-Jun,Xiang Xia,Zheng Wan-Guo,
李熙斌
,袁晓东,贺少勃,吕海兵,王海军,向霞,郑万国

物理学报 , 2012,
Abstract: A 10.6μm CO2 big size laser beam is used to passivate the ablation deposit on surface of damage site which is repaired with single laser pulse.When the irradiated region is placed on front surface,modulation by 355 nm UV ns laser pulse is inhibited effectively; when the irradiated region is situated on rear surface,the initial damage threshold exceeds the substrate initial damage threshold. Second repair makes the thermal stress distribution enlarged obviously and the thermal stress magnitude weakened.The damage growth examination shows that once thermal stress is released,the initial phase damage growth exhibits an exponential tendency and as shoot number increases the damage size approaches to a constant value.
Nickel-disilicide-assisted excimer laser crystallization of amorphous silicon
Liao Yan-Ping,Shao Xi-Bin,Gao Feng-Li,Luo Wen-Sheng,Wu Yuan,Fu Guo-Zhu,Jing Hai,Ma Kai,
廖燕平
,邵喜斌,郜峰利,骆文生,吴 渊,付国柱,荆 海,马 凯

中国物理 B , 2006,
Abstract: Polycrystalline silicon (poly-Si) thin film has been prepared by means of nickel-disilicide (NiSi$_{2})$ assisted excimer laser crystallization (ELC). The process to prepare a sample includes two steps. One step consists of the formation of NiSi$_{2}$ precipitates by heat-treating the dehydrogenated amorphous silicon (a-Si) coated with a thin layer of Ni. And the other step consists of the formation of poly-Si grains by means of ELC. According to the test results of scanning electron microscopy (SEM), another grain growth model named two-interface grain growth has been proposed to contrast with the conventional Ni-metal-induced lateral crystallization (Ni-MILC) model and the ELC model. That is, an additional grain growth interface other than that in conventional ELC is formed, which consists of NiSi$_{2}$ precipitates and a-Si. The processes for grain growth according to various excimer laser energy densities delivered to the a-Si film have been discussed. It is discovered that grains with needle shape and most of a uniform orientation are formed which grow up with NiSi$_{2}$ precipitates as seeds. The reason for the formation of such grains which are different from that of Ni-MILC without migration of Ni atoms is not clear. Our model and analysis point out a method to prepare grains with needle shape and mostly of a uniform orientation. If such grains are utilized to make thin-film transistor, its characteristics may be improved.
Development of Predictive Model for Combined Effect of Temperature and Salinity on the Growth of Vibrio parahaemolyticus
副溶血性弧菌温度-盐度双因素预测模型的建立

LI Tao,NING Xi-Bin,
李涛
,宁喜斌

微生物学通报 , 2009,
Abstract: Based on the standard strain-Vibrio parahaemolyticus BJ1.1997, temperature (7°C~43°C) and salinity (0.5%~9.5% NaCl) which affected its growth status was studied with uniform design. The results showed that Logistic equation is optimal in primary models, the second is Gompertz equation, the last is Linear equation, so growth parameters can calculated from Logistic equation. The secondary model was developed by square root models, its r value was 0.9863, the lowest growth temperature was 9.0506°C and the highest growth salinity was 5.93% the corresponding lowest growth water activity (Aw min) was 0.9227]. Through F test, residual analysis and evaluation by bias factor and accuracy factor, the model can exactly describe the relationship between the growth rate and combined effect of temperature and salinity (water activity).
Magnetic properties and magnetocaloric effects of Mn5Ge2.7M0.3 (M=Ga, Al, Sn) compounds
Mn5Ge2.7M0.3 (M=Ga,Al,Sn) 化合物的磁性和磁熵变

Liu Xi-Bin,Shen Bao-Gen,
刘喜斌
,沈保根

物理学报 , 2005,
Abstract: The magnetic properties and magnetocaloric effects of Mn5Ge2.7M0.3(M=Ga, Al, Sn) compounds have been studied. All samples crystallize in the hexagonal Mn5Si3-type structure with space group P63/mcm. The average Mn magnetic moment decreases and the Curie temperature remains almost unchanged by the substitution of M for Ge. The magnetic entropy changes in these compounds are determined from the temperature and field dependence of the magnetization using the thermodynamic Maxwell relation. The substitution of M for Ge reduces the magnitude of the magnetic entropy change owing to the decrease of the magnetic moment but broadens the magnetic entropy change peak. The maximum magnetic entropy changes for a field changes of 4.0×106A·m-1 are 6.1, 6.3, and 5.3J·kg-1K-1 for M=Ga, Al, and Sn, respectively. In addition, anomalies are found in the Arrott curves of Mn5Ge2.7M0.3(M=Ga Al, Sn) compounds under a critical field Hc when the temperature is higher than the Curie temperature TC, which indicates that the paramagnetic susceptibilities of these compounds change sharply. The value of Hc increases almost linearly with increasing temperature. This phenomenon is probably due to the change of Fermi energy by the applied magnetic field, which reduces the number of the effective charges.
Analysis and Simulation of Satellite System Parameter Effect on SAR Doppler Parameters
卫星总体参数对SAR多普勒参数影响分析及仿真研究

Zhang Jin-xiu,Cao Xi-bin,
张锦绣
,曹喜滨

电子与信息学报 , 2004,
Abstract: On the basis of the space geometry relation of spaceborne Synthetic Aperture Radar(SAR), its Doppler parameters formulation is built in this paper. Taking the earth rotation and oblateness into consideration, the orbit perturbation, attitude errors and its stability effects on SAR Doppler parameters are analyzed.The simulation result shows that orbit disturbance is the key factor to Doppler error, and the enhancement of attitude stabilization can lead to the decline of Doppler error as well as its variability. The conclusion is valuable for the determination and optimization of the system parameters.
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