检索结果-南通市图书馆

FROM UNWEIGHTED TO WEIGHTED GENERALIZED FAREY ORGANIZED TREE AND The PYRAMID NETWORKS

在线全文

学校读者我要写书评

暂无评论

Journal of Systems Science & Complexity 2010年第4期23卷 681-700页

作者： Yong LI·Jinqing FANG·Qiang LIU china institute of atomic energy,beijing 102413.china. china institute of atomic energy

Generalized Farey tree network （GFTN） and generalized Farey organized pyramid network （CFOPN） model are proposed, and their topological characteristics are studied by both theoretical analysis and numerical simulations, which are in good accordance with each other. Then weighted GFTN is studied using cumulative distributions of its Farey number value, edge weight, and node strength. These results maybe helpful for future theoretical development of hybrid models.

关键词： Generalized Farey organized pyramid network topological properties weighted generalized Farey tree network.

Theoretical research progress in complexity of complex dynamical networks

在线全文

学校读者我要写书评

暂无评论

Progress in Natural Science:Materials International 2007年第7期17卷 761-774页

作者： Fang Jinqing(Joint Complex Network Research Group,china institute of atomic energy,beijing 102413.china) Joint Complex Network Research Group China Institute of Atomic Energy Beijing 102413 China

This article reviews the main progress in dynamical complexity of theoretical models for nonlinear complex networks proposed by our Joint Complex Network Research Group(JCNRG).The topological and dynamical properties of these theoretical models are numerically and analytically *** findings are useful for understanding and deeply studying complex networks from macro- scopic to microscopic levels and have a potential of applications in real-world networks.

关键词： Harmonions unifying hybrid preferential model a large unifying hybrid network model quantum interference network nonowire networks generalized local-world model non-local links model evolving model of weighted networks small-world network with the unchanged degree

Effects of Y211 phase contents on the critical current density J_c and microstructural analysis in YBCO bulk superconductors

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Rare Metals 2002年第4期21卷 282-288页

作者： SHA Jianjun, YU Gang, and YU Jinnanchina institute of atomic energy, P. O. Box 275-51, beijing 102413. china china institute of atomic energy P.O. Box 275-51 北京 102413

YBCO bulk superconductors were prepared by the solid state reaction andtop-seed-melt-textured growth (TSMTG) process. By using the AC susceptibility measurement, thecritical transition temperature T_c of samples is 91.5 K for the highest value, and the transitionwidth ΔT_c is less than 1 K. The highest magnetization critical current densities J_c achieved 10~6A/cm^2 under 5 T at 10 K and 1.35X10^4 A/cm^2 under 2 T at 70 K (H//c), respectively. The resultscombining the SEM observation indicate that doping of Y211 particles is more effective in improvingthe growth quality of melt-textured YBCO superconductor and in reducing the micro-cracks ofspecimens. Doping of Y_2O_3 powder forms the rod-shaped Y211 particles, but doping of Y211 particlesdirectly to matrix materials forms the spherical Y211 particles mainly. Combining themicrostructures with J_c measurements shows that the interfaces are most important on flux bundlepinning, in which the gradient of free energy is larger than that of other place between the Y211particles and the Y123 matrix materials.

关键词： quasi-single domain melt-textured Y211 particles critical current density magnetic flux pinning

The Angular Distribution of Light Composite Particle Projectile in Preequilibrium Reactions

在线全文

学校读者我要写书评

暂无评论

Chinese journal of nuclear physics 1994年第2期16卷 160-169页

作者： Shen Qingbiao(china institute of atomic energy,P.O.Box 275,beijing 102413. china Inst of atomic energy Beijing China

Formulations of double differential cross sections of light composite particleconsidering (1,m) and (2,m) pickup type reactions simultaneously for semi-classicalmulti-step compound and direct processes are *** calculated results of crosssections,spectra,and double differential cross sections indicate that generally the con-tributions of the (2,m) pickup type reactions are about 15%-25% when the incident en-ergies are below 50 MeV but can become dominant when the incident energies areabove 50 MeV in some region of the outgoing energies and *** forward tenden-cy of the calculated angular distributions by (2,m) configuration is weaker than those by(1,m) *** the reactions of outgoing composite particle with higher inci-dent energy,the multi-step direct process must be considered.

关键词： Preequilibrium Composite particle Double differential cross section

Influence of some factors on alpha energy spectrum of^(241)Am fire alarm source

在线全文

学校读者我要写书评

暂无评论

Nuclear Science and Techniques 1999年第1期10卷 11-13页

作者： FENG Gensheng FENG Xinzhan LI Shujuan (china institute of atomic energy, beijing 102413. china institute of atomic energy Beijing 102413 China

Several primary factors influencing the alpha energy spectrum of 241Am fire alarm source have been studied in order to get better alpha energy spectrum. The results show that the homogeneity and the thickness of metal surface coat and the size of active area of the source have considerable influence on the alpha energy spectrum of the source.

关键词：火警 241Am警报源 α-能谱

KrF Laser-induced Damage to ZrO2/SiO2 Coatings

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Lasers 1995年第2期B4卷 161-168页

作者： WANG Naiyan GAO Huailin(china institute of atomic energy, P. O. Box 275-7, Bejijng 102413. china) china Inst of atomic energy Beijing China

ＫｒＦＬａｓｅｒ－ｉｎｄｕｃｅｄＤａｍａｇｅｔｏＺｒＯ２／ＳｉＯ２Ｃｏａｔｉｎｇｓ￥ＷＡＮＧＮａｉｙａｎ；ＧＡＯＨｕａｉｌｉｎ(ＣｈｉｎａＩｎｓｔｉｔｕｔｅｏｆＡｔｏｍｉｃＥｎｅｒｇｙ，Ｐ．Ｏ．Ｂｏｘ２７５－７，Ｂｅ... 详细信息

ＫｒＦＬａｓｅｒ－ｉｎｄｕｃｅｄＤａｍａｇｅｔｏＺｒＯ２／ＳｉＯ２Ｃｏａｔｉｎｇｓ￥ＷＡＮＧＮａｉｙａｎ；ＧＡＯＨｕａｉｌｉｎ(ＣｈｉｎａＩｎｓｔｉｔｕｔｅｏｆＡｔｏｍｉｃＥｎｅｒｇｙ，Ｐ．Ｏ．Ｂｏｘ２７５－７，Ｂｅｊｉｊｎｇ１０２４１３，Ｃｈｉｎ...

关键词： KrF laser coating laser-induced coating damage

Biasing fluctuation model for directional stepping motion of molecular motor

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Chinese Science Bulletin 1998年第22期43卷 1879-1882页

作者： BAO Jingdong 1 and ZHUO Yizhong 2 1. beijing Meteorological College, beijing 100081, china 2. china institute of atomic energy, beijing 102413. china beijing Meteorological College Beijing China china institute of atomic energy Beijing China

The biasing fluctuation model with a colored noise is presented to study the directional stepping motion of the molecular motor. The expression of probability current is obtained in the adiabatic approximation. The fo... 详细信息

关键词： molecular motor stepping motion biasing force colored noise Langevin equation.

Determination of ^(79)Se with accelerator mass spectrometry technique

在线全文

学校读者我要写书评

暂无评论

Chinese Science Bulletin 1997年第1期42卷 30-33页

作者： JIANG Songsheng, JIANG Shan, LI Chunsheng, he Ming, WU Shaoyong and LI SiIinchina institute of atomic energy, beijing 102413. china china institute of atomic energy Beijing China

So far accelerator mass spectrometry （AMS） technique has been used for the determination of numbers of important long-lived radioisotopes, such as 10Be, 14C, 26Al, 36Cl, 41Ca and 129I, in their applications of geoscienee, environmental science, archaeology and biomedical research. It is interesting to determine 79Se with AMS technique for its potential application in biomedical research and environmental science presently. The published half-life values of 79Se are more than 2 orders of magnitude apart, ranging from 103 to 106 a. The uncertainty of the half life has been an obstacle to the 79Se application as a tracer. Selenium is one of the impor-

关键词： accelerator mass spectrometry 79Se half life.

在线全文

学校读者我要写书评

暂无评论

不产生长寿命高放废物的先进核能系统

原子能科学技术 1997年第6期31卷 558-567页

作者： Li Shounan (china institute of atomic energy beijing 102413.) 中国原子能科学研究院

阐述了核废物分离－嬗变（Ｐ－Ｔ）处置和先进核能系统（ＡＮＥＳ）的重要性及其物理基础，讨论了对化学分离的要求和现状，并对裂变堆、聚变－裂变混合堆、加速器驱动次临界堆等核废物嬗变炉为主的３类先进核能系统作了简要讨论。最后... 详细信息

阐述了核废物分离－嬗变（Ｐ－Ｔ）处置和先进核能系统（ＡＮＥＳ）的重要性及其物理基础，讨论了对化学分离的要求和现状，并对裂变堆、聚变－裂变混合堆、加速器驱动次临界堆等核废物嬗变炉为主的３类先进核能系统作了简要讨论。最后，对我国开展先进核能系统研究的发展战略提出了建议。

关键词：先进核能系统分离-嬗变核废物处置嬗变炉