检索结果-南通市图书馆

Heavy ion reactions around the Coulomb barrier

中国科学：物理学、力学、天文学英文版 2011年第S1期54卷 6-13页

作者： ZHANG HuanQiao1, LIN ChengJian1, JIA HuiMing1, ZHANG ChunLei1,2, ZHANG GaoLong1,3, YANG Feng1, LIU ZuHua1, AN GuangPeng1, WU ZhenDong1, XU XinXing1 & JIA Fei1 1 china institute of atomic energy, P. O. Box 275(10), beijing 102.13, china 2 Particle Astrophysics Center, institute of High energy Physics, Chinese Academy of Sciences, beijing 100039, china 3 School of Physics and Nuclear energy Engineering, Beihang University, beijing 100191, china china institute of atomic energy Beijing China Particle Astrophysics Center Institute of High Energy Physics Chinese Academy of Sciences Beijing China School of Physics and Nuclear energy Engineering Beihang University Beijing China

The angular distributions of fission fragments for the 32S+184W reaction near Coulomb barrier energies are measured. The ex perimental fission excitation function is obtained. The measured fission cross sections are decomposed into fusion-fission, quasi-fission and fast fission contributions by the dinuclear system (DNS) model. The hindrance to completing fusion both at small and large collision energies is explained. The fusion excitation functions of 32S+90,96Zr in an energy range from above to below the Coulomb barrier are measured and analyzed within a semi-classical model. The obvious effect of positive Q-value multi-neutron transfers on the sub-barrier fusion enhancement is observed in the 32S+96Zr system. In addition, the excitation functions of quasi-elastic scattering at a backward angle have been measured with high precision for the systems of 16O+208Pb, 196Pt, 184W, and 154,152Sm at energies well below the Coulomb barrier. Considering the deformed coupling effects, the extracted diffuseness parameters are close to the values extracted from the systematic analysis of elastic and inelastic scattering data. The elastic scattering angular distribution of 17F+12C at 60 MeV is measured and calculated by using the continuum-discretized coupled-channels (CDCC) approach. It is found that the diffuseness parameter of the real part of core-target potential has to be increased by 20% to reproduce the experimental result, which corresponds to an increment of potential depth at the surface re gion. The breakup cross section and the coupling between breakup and elastic scattering are small.

关键词： fusion-fission quasi-fission fusion hindrance fusion enhancement surface diffuseness parameter exotic nuclei

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Properties of the 3/2^-[521] band in the odd-N rare-earth nuclei

引用

Science china(Physics,Mechanics & Astronomy) 2011年第S1期54卷 37-43页

作者： CHEN Liang1,2, ZHOU XiaoHong1,2, ZHANG YuHu1, ZHANG ShuangQuan3 & ZHU LiHua4 1institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, china 2Graduate University of Chinese Academy of Sciences, beijing 100049, china 3State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, beijing 100871, china 4china institute of atomic energy, beijing 102.13, china institute of Modern Physics Chinese Academy of Sciences Lanzhou China Graduate University of Chinese Academy of Sciences Beijing China State Key Laboratory of Nuclear Physics and Technology School of Physics Peking University Beijing China china institute of atomic energy Beijing China

High-spin states in 161Er have been studied experimentally via the 150Nd(16O, 5n) reaction at a beam energy of 86 MeV. Three rotational bands built on the 5/2+[642], 3/2-[521], and 11/2-[505] configurations have been extended up to high-spin states, and particularly, the α = -1/2 branch of the ground state 3/2-[521] band has been revised significantly. It is found that signature inversion occurs in the 3/2-[521] band after the band crossing in 161Er. The systematics of the signature inversion associated with the 3/2-[521] configuration in the rare-earth region is discussed. The band properties are analyzed within the framework of a triaxial particle-rotor model, and a triaxial deformation is proposed to the 3/2-[521] band.

关键词： high-spin states signature inversion triaxial particle-rotor model

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

The tectonic settings and seismogenic tectonics of the M5.7 Jiujiang earthquake in 2005,Jiangxi Province,china

引用

Science china Earth Sciences 2008年第5期51卷 640-653页

作者： LI ChuanYou1, ZENG XinFu2 & ZHANG JianXi3 1 institute of Geology, china Earthquake Administration, beijing 100029, china 2 Jiangxi Earthquake Administration, Nanchang 330039, china 3 beijing Earthquake Administration, beijing 100080, china institute of Geology China Earthquake Administration Beijing China Jiangxi Earthquake Administration Nanchang China beijing Earthquake Administration Beijing China

The M5.7 Jiujiang earthquake in 2005 was a mid-strong one, stronger than expected to occur in the region. This paper discusses the neo-tectonic settings of this earthquake, and it is thought that the earthquake region is located in the transitional belt, a potential area inducing weak to moderately strong earthquakes, between two large different tectonic units. The results of the reconnaissance work and on-the-spot investigation after earthquake indicate that the occurrence of the M5.7 Jiujiang earth- quake is closely related with the NE-trending fault on the western margin of Ruichang Basin. From its controlling to the landforms and Quaternary depositions, geological profiles, ESR dating, etc., the ac- tivity of the Dingjiashan-Langjunshan fault bounding the basin is discussed. It suggests that this fault displays an active one in Middle Pleistocene by the outcrop. Based on the activity of the fault, and the direction and location of the ground fissures, the isoseismal lines and the nodal plane of the focal mechanism solution, it is inferred that the Dingjiashan-Langjunshan fault is the seismogenic tectonics of the M5.7 Jiujiang earthquake, and the intersection point between this fault and the active NW ones is the possible origin of location of this earthquake. Our study shows that this earthquake is not an event exceeding expectation, and that the active and invisible characteristics of the causative fault are typical in the eastern area of china.

关键词： Jiujiang earthquake tectonic settings Dingjiashan-Langjunshan fault activity seismogenic tectonics

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

整合医学宣言

引用

肿瘤药学 2024年第4期14卷 393-395页

作者： china institute for Development Strategy of Holistic Integrative Medicine 中国整合医学发展战略研究院

整体整合医学简称整合医学，自2012年正式提出，其理论体系不断完善，实践方法日趋丰富，成为医学发展新时代的必然选择和必由之路。本文提出整合医学的十大主张，从认识论和方法学上阐述了整合医学的内涵和外延，以期实现现代医学的升... 详细信息

整体整合医学简称整合医学，自2012年正式提出，其理论体系不断完善，实践方法日趋丰富，成为医学发展新时代的必然选择和必由之路。本文提出整合医学的十大主张，从认识论和方法学上阐述了整合医学的内涵和外延，以期实现现代医学的升维转型和自适应进化。

关键词：整体整合医学整合医学医学发展

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

《整合医学宣言》

引用

广州中医药大学学报 2024年第10期41卷 2515-2517页

作者： china institute for Development Strategy of Holistic Integrative Medicine 中国整合医学发展战略研究院

整体整合医学简称整合医学，自2012年正式提出以来，其理论体系不断完善，实践方法日趋丰富，成为医学发展新时代的必然选择和必由之路。该文提出整合医学的十大主张，从认识论和方法学上阐述了整合医学的内涵和外延，以期实现现代医学... 详细信息

整体整合医学简称整合医学，自2012年正式提出以来，其理论体系不断完善，实践方法日趋丰富，成为医学发展新时代的必然选择和必由之路。该文提出整合医学的十大主张，从认识论和方法学上阐述了整合医学的内涵和外延，以期实现现代医学的升维转型和自适应进化。

关键词：整体整合医学整合医学医学发展

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Unsteady Numerical Simulation of Hot Streak/Blades Interaction and Film Cooling

引用

Journal of Thermal Science 2010年第5期19卷 402-409页

作者： Weilin Yi,Lucheng Ji and Yunhan Xiao Research Center for energy and Power,Chinese Academy of Sciences,beijing,china Key Laboratory of Advanced energy and Power,Chinese Academy of Sciences,(institute of Engineering Thermophysics),beijing,china P.O.Box 2706,beijing 100190,china Research Center for energy and Power Chinese Academy of Sciences Beijing China Key Laboratory of Advanced energy and Power Chinese Academy of Sciences (Institute of Engineering Thermophysics) Beijing China beijing China

Deeply research on management and application of hot streak is an important way to breakthrough technique obstacle of aero engine hot *** method is a useful instrument to investigate the correlative *** the paper developed independently three dimensional unsteady parallel computational code-MpiTurbo based on Fortran 90 and MPI at Linux operating *** unsteady numerical simulation was carried out to investigate impacts of the factors,which included circumferential locations of hot streak and clocking positions of blade rows,on the thermal environment of a 1+1 counter-rotating *** results clearly indicated that clocking positions of hot streak/blade row and blade row/blade row had great influence on the time-averaged temperature distribution of the third blade ***,it can be effective for improving thermal environment of turbine to optimize blade parameters and clocking *** film cooling layout was designed by the repetitious steady simulation based on source term *** the flow structure detail was given by the unsteady simulation.

关键词： hot streak turbine parallel computation film cooling

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Suppression of Radioactive Strontium Absorption by Sodium Alginate in Animals and Human Subjects

引用

Biomedical and Environmental Sciences 1991年第3期4卷 273-282页

作者： GONG YIFENG, HUANG ZHAOJIAN, QIANG MEIYU, LAN FUXING,BAI GUANG, MAO YIXIAN MA XlNPEl AND ZHANG FENGGE The institute of Radiation Medicine, beijing, china and The institute of atomic energy, beijing, china institute of Radiation Medicine Beijing China.

The effect of 23 sodium alginate preparations from different species of algae (Sargassum sp.) and kelp (Laminaria sp.) on reducing the absorption of strontium was studied in detail. A pilot production procedure has been established. Na alginate from S. siliquastrum was proven to be a potent agent for reducing Sr absorption, with high efficiency and virtually no toxicity. It reduced the body burden of strontium 3.3-4.2 fold in rats. Strontium absorption in human subjects was reduced by 78% ( ±8.9) or completely suppressed the increase of serum Sr at 2 h after ingestion of stable Sr in volunteers and decrease 24 h urine Sr to similar extent. No undesirable effects on gastrointestinal function was observed nor were Ca, Fe, Cu and Zn metabolism changed, both in the animal experiments and in human. It was concluded that alginate preparations derived from Sargassum species are a suitable antidote against radiostrontium absorption on a long-term basis, when added to bread at a 6% level. In cases of emergency, an alginate syrup preparation appears to be more suitable because of its rapid action.

关键词： Suppression of Radioactive Strontium Absorption by Sodium Alginate in Animals and Human Subjects

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

STUDY OF Ag DIFFUSION INTO Cu SINGLE CRYSTALS BY RUTHERFORD BACKSCATTERING SPECTROMETRY

引用

Acta Metallurgica Sinica(English Letters) 2003年第5期16卷 332-334页

作者： R.Wang 1) Key Laboratory of Beam Technology and Materials Modification, Ministry of Education, beijing 100875, china2) institute of Low energy Nuclear Physics, beijing Normal University, beijing 100875, china3) beijing Radiation Center, beijing 100875, china Lab. of Beam Technol. Inst. of Low Energy Nucl. Phys. Beijing Normal Univ. Beijing 100875 China beijing Radiation Ctr. Beijing 100875 China

4.0Me V 7Li++ RBS was used for investigations of thermal diffusion of Ag in Cu single crystals. The annealing of samples was carried out in vacuum in the temperature range from 498K to 613K. The element depth concentration profiles transformed from RBS spectra indicate that the diffusion of Ag into Cu is a typical volume diffusion. The Arrhenius parameters corresponding to the diffusion were obtained.

关键词： Ag diffusion single crystal

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

A 12-bit multichannel ADC for pixel detectors in particle physics and nuclear imaging

引用

Science china(Technological Sciences) 2010年第5期53卷 1208-1214页

作者： WEI Wei1,2,3,WANG Zheng1,3 & ZHAO JingWei1,3 1 institute of High energy Physics,Chinese Academy of Sciences,beijing 100049,china 2 Graduate University of Chinese Academy of Sciences,beijing 100049,china 3 Key Lab of Nuclear Detection Technology and Nuclear Electronics of Chinese Academy of Sciences,beijing 100049,china institute of High energy Physics Chinese Academy of Sciences Beijing China Graduate University of Chinese Academy of Sciences Beijing China Key Lab of Nuclear Detection Technology and Nuclear Electronics of Chinese Academy of Sciences Beijing China

Modern pixel detectors in nuclear and particle physics experiments and also in nuclear imaging,starve for highly integrated application specified integrated circuit(ASIC),whereas in china the study of ASIC still stays far away from practical *** lack of ASIC strictly limits the research and development of domestic high energy physics field.A 12-bit multichannel ADC designed for high density readout is introduced as a major candidate for solution.A precise model is discussed and the simulation fully agrees with the model,which indicates a key principle of *** is performed according to the given rule,and novel layout techniques are carried *** results in all aspects are also obtained,showing an excellent real performance,which satisfies the practical requirement.

关键词： application specified integrated circuit high density readout Wilkinson ADC multi-channel ADC

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

整合医学宣言

引用

空军军医大学学报 2024年第7期45卷 721-722页

作者： china institute for Development Strategy of Holistic Integrative Medicine 中国整合医学发展战略研究院

中国抗癌协会理事长樊代明院士在国际上率先提出“整合医学”理念并付诸实践,被誉为“整合医学”全球第一人,他首次提出“肿瘤防治,赢在整合”。“整合医学”理念提出后,得到了国家高度重视和世界医学界的关注。中共中央办公厅、国务院... 详细信息

中国抗癌协会理事长樊代明院士在国际上率先提出“整合医学”理念并付诸实践,被誉为“整合医学”全球第一人,他首次提出“肿瘤防治,赢在整合”。“整合医学”理念提出后,得到了国家高度重视和世界医学界的关注。中共中央办公厅、国务院办公厅印发的《关于进一步完善医疗卫生服务体系的意见》指出,到2035年,形成与基本实现社会主义现代化相适应,体系完整、分工明确、功能互补、连续协同、运行高效、富有韧性的整合型医疗卫生服务体系。通过13年来的不懈努力,樊代明院士领衔逐步建立起适合我国国情的《中国肿瘤整合诊治指南(CACA)》体系,并通过CACA精读巡讲、进校园、指导科研等方式,解决“医教、医研”脱节问题,推动相关领域改革,为国家卫生服务体系建设贡献出CACA智慧与力量。2024年6月22日,在中国成都第3届“人民医学传播大会”现场,在樊代明、黄荷凤、王琦、陈士林等院士和3 000名专家学者的见证下,《整合医学宣言》重磅发布。这一宣言由百余位两院院士和百余位医科大学校长/院长联名签署,其发布为人类医学的发展起到积极的推动作用。由此,人类医学将迈向一个新的发展历史时期。

关键词：整合医学整合医学宣言医学发展中国肿瘤整合诊治指南健康中国

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：