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Search Results: 1 - 10 of 149290 matches for " Li Wen-Lai "
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Effect of Electron Correlations and Breit Interactions on Ground-State Fine-Structures along the Nitrogen-Like Isoelectronic Sequence

WANG Xiao-Lu,LU Wen-Lai,GAO Xiang,LI Jia-Ming,

中国物理快报 , 2009,
Abstract: The accurate atomic data of nitrogen and nitrogen-like ions have an importance role in fusion plasma studies and astrophysics studies. The recise calculation of fine-structures is required to obtain such atomic data. Along the whole nitrogen isoelectronic sequence, the contributions of theelectron correlations, the Breit interactions and the quantum electrodynamics corrections on the ground-state fine-structures are elucidated. When Z is low, the electron correlations are important, and the Breit interactions, which cannot be neglected cause interesting anomalous fine-structure splittings. When Z is high, the electron correlations are less important, and the Breit interactions are important in addit
SPECTROSCOPIC MEASUREMENT OF ELECTRON TEMPERA-TURE IN CURRENT RISING PHASE ON CT-6B TOKAMAK
CT-6B托卡马克装置上电流上升阶段电子温度的光谱测量

LI ZAN-LIANG,WANG WEN-SHU,LI WEN-LAI,LIU XIANG,LI XIAO-CHANG,
李赞良
,王文书,李文莱,刘翔,李孝昌

物理学报 , 1989,
Abstract: The time evolution of electron temperature in plasma current rising phase on CT-6B Tokamak is estimated by the history method for oxygen impurity lines. The time variations of line emissions of OII-OV1 in VUV region are measured by one-meter grazing incidence vacuum spectrometer and the electron density is measured by using FIR HCN laser interferometer. The switch-on time of each line emission is used for estimating electron temperature. The influences of oxygen impurity influx rate and confinement time on intensity and switch-on time of line emissions are surveyed numerically. The estimated electron temperatures arc around 3.6, 5.6, 7.3, 10.8 and 21 eV, respectively at 0.36, 0.56, 0.66, 0.90 and 1.4 ms after the start of discharge, which indicate the plasma temperature in central region.
Poloidal rotation of main ions in the CT-6B tokamak
Poioidai rotation of main ions in the CT-6B tokamak

Feng Chun-Hu,Li Zan-Liang,Yang Xuan-Zong,Zheng Shao-Bai,Li Wen-Lai,Wang Long,
冯春华
,李赞良,杨宣宗,郑少白,李文莱,王龙

中国物理 B , 2003,
Abstract: The poloidal rotation velocity of neutral hydrogen atoms is measured using the Doppler shift of the Hα spectral line emitted in the CT-6B tokamak. The poloidal rotation of hydrogen atoms is generated through the collisions and charge-exchanges with main ions (protons). Therefore, the rotation direction of main ions can be deduced from that of neutral hydrogen atoms. The experimental results show that the main ions rotate in the electron diamagnetic drift direction, the same as the impurity ions, in the plasma core. The neutral hydrogen atoms rotate also in the electron diamagnetic drift direction in the edge region of the plasma. However, the rotation direction of main ions in the edge region cannot be judged from the experimental result due to the long mean free path of hydrogen atoms in the edge region. An inward diffusion flux of hydrogen atoms toward the torus inside with a velocity of the same order of magnitude as their poloidal rotation is also observed.
SEVERAL PROBLEMS ON NATURAL RESOURCES CAPITALIZATION MANAGEMENT
关于自然资源资产化管理的几个问题

JIANG Wen-lai,
姜文来

资源科学 , 2000,
Abstract: Natural resources capitalizationt management is a new idea arising in natubral resources management.Based on the analysis of subjective\|objective background of the idea , this paper analyzes seven important issues on natural resources capitalization management.Results show that transformation from natural resources into natural resources assets must be simultaneously provided with two prerequisites:scarcity of natural resources and property right definite.Taking into consideration of characteristics of natural resources,capitalized management can only be performed for partial natural resources;natural resources assets value theory and quantity theory need to be deepened and innovated;it is feasible to conduct natural resources capitalization management theoretically but many existing barriers restrict its applicability; natural resources assets depreciation which has specialities differs from fixed assets depreciation; and nationalized natural resources assets elapse awaits to be prevented from various aspects.
MICROWAVE PREIONIZATION PLASMA IN A TOKAMAK
托卡马克微波预电离等离子体

WANG LONG,LUO YAO-QUAN,LI ZAN-LIANG,WANG WEN-SHU,YANG SI-ZE,LI WEN-LAI,QI XIA-ZHI,ZHAO HUA,
王龙
,罗耀全,李赞良,王文书,杨思泽,李文莱,戚霞枝,赵华

物理学报 , 1989,
Abstract: A currentless plasma has been obtained in a tokamak device using a powerful microwave at electron cyclotron frequency generated by gyrotron systems. Its electron density is up to 8×1012cm-3; the electron temperature is up to 50 eV; the particle confinement time is about. 0.5ms; the heating efficiency is above 25%. The effect of the plasma on the toroidal breakdown and the heating mechanism have been studied.
Index system and assessment of water resources carrying capacity in Minqin Basin
民勤盆地水资源承载力指标体系及评估

TANG Qu,JIANG Wen-lai,TAO Tao,
唐曲
,姜文来,陶陶

自然资源学报 , 2004,
Abstract: Water resource is the most important limiting factor to the social-economic development of Minqin Basin.Research into the water resources carrying capacity is significant to the sustainable development of the Basin.In this paper,we adopt both qualitative analysis and quantitative analysis to discuss the definition,connotation and affecting factors of water resources carrying capacity,and,combined with the status of the environment,society and economy in Minqin Basin,set up the index system which can be used to measure and evaluate water resources carrying capacity.According to the index system and using the acquirable data,we predict the water resources carrying capacity of the Minqin Basin in 2001,2010 and 2020.
Water Resources Management and Its Research Progress
水资源管理学及其研究进展

JIANG Wen-lai,LEI Bo,TANG Qu,
姜文来
,雷波,唐曲

资源科学 , 2005,
Abstract: Water shortage, water pollution and water disaster are three main problems of water resource in China. These problems are partly a matter of water resources management (WRM), which is an unperfected system in China currently. And water resource management plays a very important role in solving these problems. Therefore, building a proper system of WRM is very necessary. Study of water resource management is a collective body of considering all kinds of measurements and rules in order to protect water resource and achieve its sustainable utilization. Based on some basic subjects such as hydrology, study of water resources, management, etc., study of water resource management is an integrated subject researching the system of WRM and its detail contents. Generally speaking, this study is involved with many different aspects related to water resource, such as quantity, quality, law, property, administration, planning, arrangement, economy, investment, risk, technology, project, digitization and safety, and so on. It is well known from reality that building the system of WRM is very useful not only for academic research but for practice in water resource management. According to this work, we can perfect idea and improve method in dealing with water resource crisis. Furthermore, using these idea and method, we also can increase efficiency of water resource utilization, protect water resource, achieve water sustainable utilization and form a stable background for our national economic sustainable development. Water resource is a basic kind of natural resources for people survival and national development. In the recent years, a lot of literatures and data have been accumulated by many experts who were working on water-induced problems, especially from water shortage. Consequently, study of water resource management will be actively developed on a solid basis, which is meaningful to water resource sustainable utilization and management in China.
ELECTRON CYCLOTRON WAVE HEATING EXPERIMENT ON CT-6B TOKAMAK
CT-6B托卡马克的电子迴旋波加热实验

LUO YAO-QUAN,WANG LONG,YANG SI-ZE,CHEN YAN-PING,QI XIA-ZHI,LI ZAN-LIANG,WANG WEN-SHU,LI WEN-LAI,ZHAO HUA,TANG JI-HUI,TAN FU-CHUAN,
罗耀全
,王龙,杨思泽,陈雁萍,戚霞枝,李赞良,王文书,李文莱,赵华,唐继辉,谭富传

物理学报 , 1990,
Abstract: Obvious heating effects have been observed in RF heating experiments on CT-6B tokamak, in which microwave beams of frequencies 34.34 GHz and 20.1 GHz generated by two gyrotron systems were launched from top and outside of the device, respectively. It is shown that these heating effects arise becouse of the different heating mechanisms. The former is due mainly to the resonance heating of O mode. The latter belongs to down shift-over dense heating. Its heating mechanism may be the nonlinear phenomena occuring near the high density cut off layer of X mode. A kind of nonlinear heating phenomena (secondary heating) has been observed in two experiments, which may come from the different physical mechanisms.
Thermal Stability Investigation of a Newly Developed Sealing Glass as IT-SOFC Sealant
中温SOFC密封玻璃热稳定性研究

PENG Lian,ZHU Qing-Shan,XIE Zhao-Hui,HUANG Wen-Lai,
彭练

无机材料学报 , 2006,
Abstract: 研究了一种热稳定性好的中温固体氧化物燃料电池密封玻璃.研究表明,此密封玻璃的热膨胀系数(室温-631℃)为9.8×10-6/K,与8YSZ电解质的热膨胀系数10.0×10-6/K(室温-631℃)接近,并且在700℃热处理300h后,该密封玻璃的热膨胀系数几乎没有变化.粘度实验表明,玻璃在700℃下具有足够的刚性,适合于运行温度在700℃左右SOFC的密封.化学相容性的研究显示,在700℃下与8YSZ反应300h后没有发现显著的界面反应.
Experimental Investigation for Normal Impact on Single Bumper Shield at First Threshold Velocity Range
第一门槛值区间单防护屏防护正撞击实验研究

ZHANG Wei,PANG Bao-jun,MA Wen-lai,ZHANG Ze-hua,
张伟
,庞宝君,马文来,张泽华

实验力学 , 2000,
Abstract: An impact experiment for spacecraft structure is reported, where the impact happens between a cylindrical projectile and a single bumper shield, and the impact velocity is within the first threshold velocity range. Results of the experiment are analyzed. Information on damage characteristics and failure mode is obtained.
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