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中国免疫学杂志 1993年第4期9卷 226-226页

作者：单风平,ion.Gresser 沈阳医学院生物技术研究所法国科学院肿瘤研究所癌基因室沈阳110031 主任

红白血病是当今世界仍未攻克的一种血液系统癌症,其发病机理至今未清。小鼠Friend 红白血病由Friend 病毒引韦,六十年代起国外有大量报

关键词：红白血病细胞小鼠小家鼠 Friend 胶体金胶体矿物单克隆抗体病毒抗原 GP

Gene-edited Disease Monkeys Cloned at CAS

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Bulletin of the Chinese Academy of Sciences 2019年第1期33卷 57-57页

作者： ion ion

The first cohort of five geneedited monkey clones made form fibroblasts of a monkey with disease phenotypes were born recently at the Institute of Neuroscience (10N) of the Chinese Academy of Sciences(CAS) in Shanghai.

关键词： cohort Shanghai Neuroscience

Measurement of ^(64)Zn(n,γ) ^(65)Zn Cross Section

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Chinese journal of nuclear physics 1995年第4期17卷 342-344页

作者： Chen Jin-xiang Shi Zhao-min Tang Guo-you Zhang Guo-hui,Institute of Heavy ion.Physics, Peking University, Beijing 100871Lu Han-lin,Zhao Wen-rong and Yu Wei-xiang, China Institute of Atomic Energy, P. O. Box 275(3), Beijing 102413 北京大学重离子物理所北京中国原子能科学院北京

Cross section. of 64（n,γ）（65）Zn reaction.are measured in the energy range from 156to 1150 keV by the activation.technique. The activities of the products are counted with a highresolution.HPGe γ-ray spectrometer. The neutron fluence is determined by （197）Au（n,γ）（198）Aucross section. Experimental activation.cross section. are given for the first time. The errors ofthe measured results are 5%-8%.

关键词： Cross section Activation technique Zinc

Measurement of Angular Distribution.and Cross Section.for ^(58)Ni(n,α)^(55)Fe Reaction.at 5.1 MeV

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Chinese journal of nuclear physics 1995年第1期17卷 45-48页

作者： Tang Guo-you Bai Xin-hua Shi Zhao-min Chen Jin-xiang (Institute of Heary ion.Physics.Peking University.Beijing 100871)Yu.M.Gledenov G.Khuuhenhuu Yu.P.Popov (Joint Institute for Nuclear Research,Dubna 141980.Russia) 北京大学重离子物理所北京 Joint Institute for Nuclear Research 俄罗斯

The α-particle angular distribution.of 58Ni（n,α）55Fe was measured at incidentneutron energy 5.1 MeV using a grid ion.zation.*** fluence was deter-mined by fission.of 238*** present results were compared with the t... 详细信息

关键词： Grid ion.zation chamber Fission chamber Angular distribution Cross section

Evaluation.and Calculation.of Activation.Cross Section. for 158,159Tb(n,2n), (n,3n), (n,γ) and (n,x) Reaction. Below 20 MeV

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中国核科技报告 1997年第S2期 78-88页

作者： Yu Baosheng Han Yinlu Gao Lan (China Nuclear Data Center, CIAE)Shi Zhaomin Tang Guoyou(Institute of Heavy ion.Physics, Peking University)

Introduction.b is a rare-earth element. Its activation.cross section.is a good indicator for nuclear science and technology application.. However, the evaluated data are very scarce in several nuclear data libraries. ... 详细信息

关键词： Evaluation.and Calculation.of Activation.Cross Section. for n,x Reaction. Below 20 MeV n,2n Tb and

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低能Pt原子团簇沉积过程的分子动力学模拟

物理学报 2002年第12期51卷 2798-2803页

作者：叶子燕张庆瑜大连理工大学三束材料改性国家重点实验室大连116024

利用分子动力学模拟系统研究了低能Pt38,Pt1 41 和Pt2 6 6 原子团簇与Pt(0 0 1)表面的相互作用过程 ,详细分析了初始原子平均动能为 0 .1,1.0和 10eV的原子团簇的沉积演化过程及其对基体表面形貌的影响 .研究表明 ,初始原子平均动能是... 详细信息

利用分子动力学模拟系统研究了低能Pt38,Pt1 41 和Pt2 6 6 原子团簇与Pt(0 0 1)表面的相互作用过程 ,详细分析了初始原子平均动能为 0 .1,1.0和 10eV的原子团簇的沉积演化过程及其对基体表面形貌的影响 .研究表明 ,初始原子平均动能是描述低能原子团簇的重要参量 .当团簇的平均原子动能较低时 ,团簇对基体表层原子点阵损伤较小 ,基本属于沉积团簇 ;随着入射团簇的原子平均动能的增加 ,团簇对表层原子点阵结构的破坏能力增强 ,当团簇的原子平均动能增加到 10eV时 ,团簇已经显现出注入特征 .低能原子团簇对基体表面形貌的影响主要取决于团簇的初始原子平均动能 ,但随着团簇所含原子数目的增加 ,低能原子团簇对基体表面的影响略有增强 .此外。

关键词：分子动力学模拟低能原子团簇载能沉积薄膜制备 Pt原子团簇铂原子

EVALUATion.OF NEUTRON NUCLEAR DATA OF 237Np FOR CENDL-2

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中国核科技报告 1991年第S2期 290-300页

作者： Tang Guoyou Fan Jihong Cao Wentian Bao Shanglian (INST. OF HEAVY ion.PHYSICS, PEKING UNIVERSITY ) Cai Chonghai ( PHYSICS DEPARTMENT, NANKAI UNIVERSITY )

The measured data of（n,f）,（n,γ）reaction.for237Np have been evaluated inthe energy region.from 30 keV to 20 *** the data of237Np for other reac-tion.channels are theoretically *** recommended experimental dataand the theortically calculated data are adjusted and make σtot=σel+σnonAll the data in the energy range 10-5eV to 20 MeV are recommended as the da-ta file of237Np for CENDL-2.

关键词： ENDF data EVALUATion.OF NEUTRON NUCLEAR DATA OF Np FOR CENDL-2 NSE

A SQP optimization.method for shimming a permanent MRI magnet

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Progress in Natural Science:Materials Internation.l 2009年第10期19卷 1439-1443页

作者： Zhe Jina,Xing Tangb,Bin Menga,Donglin Zu b,Weimin Wanga,a Institute of Quantum Electronics,School of Electronics Engineering and Computer Science,Peking University,Beijing 100871,China b Institute of Heavy ion.Physics,Beijing Key Laboratory of Medical Physics and Engineering,School of Physics,Peking University,Beijing 100871,China Institute of Quantum Electronics School of Electronics Engineering and Computer Science Peking University Beijing 100871 China Institute of Heavy ion.Physics Beijing Key Laboratory of Medical Physics and Engineering School of Physics Peking University Beijing 100871 China

Based on the sequential quadratic programming(SQP) method,a new approach is presented in this paper to gain a uniform magnetic field for a permanent MRI magnet with biplanar ***,the adopted shimming piece is modeled as a magnetic dipole moment to calculate its effect on the background field over the imaging region.of ***,the SQP method is utilized to determine the ideal solution.for the shimming ***,the ideal solution.is discrete,and the quantization.error control technique is used for special *** new method helps to reduce the inhomogeneity from 1234.5 ppm to 21.4 ppm over a 36 cm diameter spherical volume(DSV),within hours in practical shimming work.

关键词： Magnetic resonance imaging(MRI) Field shimming Sequential quadratic programming(SQP) Permanent MRI magnet

Shape phase transition. in nuclei:Effective order parameters and trajectories

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Science China(Physics,Mechanics & Astronomy) 2011年第S1期54卷 88-97页

作者： ZHANG Yu1,2, HOU ZhanFeng2 & LIU YuXin2,3 1Department of Physics, Liaoning Normal University, Dalian 116029, China 2Department of Physics and the State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China 3Center of Theoretical Nuclear Physics, Nation.l Laboratory of Heavy ion.Accelerator, Lanzhou 720000, China Department of Physics Liaoning Normal University Dalian China Department of Physics and the State Key Laboratory of Nuclear Physics and Technology Peking University Beijing China Center of Theoretical Nuclear Physics National Laboratory of Heavy Ion Accelerator Lanzhou China

We analyze systematically the effective order parameters in nuclear shape phase transition.both in experiments and in the interacting boson model. We find that energy ratios and B(E2) ratios can distinguish the first from the second-order phase transition.in theory above a certain boson number N (about 50), but in experiments, only those quantities, such as E(L1+)/E(02+) and B(E2; (L+2)1 → L1)/B(E2; 21 → 01), etc., of which the monotonous transition.l behavior in the second-order phase transition.is broken in the first order phase transition.independent of N, are qualified as the effective order parameters. By implementing the originally proposed effective order parameters and the new ones, we find that the isotones with neutron number Nn = 62 are a trajectory of the second order phase transition. In addition. we predict that the transition.l behavior of isomer shifts of Xe, Ba isotopes and Nn = 62 isotones is approximately monotonous due to the finiteness of nuclear system.

关键词： nuclear shape phase transition interacting boson model effective order parameter finite particle number effect transition trajectory