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

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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 {3., beijing 102.13. china china institute of atomic {3. 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, 3.Cl, 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./sup> 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.

The mathematical model of wetting angle of heterogeneous nucleation

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Science china(Technological Sciences) 2004年第4期47卷 391-397页

作者： HUANG Cheng1, SONG Bo1, MAO Jinghong2 & ZHAO Pei3.1. School of Metallurgical and Ecological Engineering, University of Science and Technology beijing, beijing 100083. china 2. School of Material Science, University of Science and Technology beijing, beijing 100083. china 3. Central Iron and Steel Research institute, beijing 100081, china School of Metallurgical and Ecological Engineering University of Science and Technology Beijing School of Material Science University of Science and Technology Beijing

The heterogeneous nucleation has been analyzed in terms of the thermodynamic theory, and the mathematical model of wetting angle of heterogeneous nucleation has been developed based on the dynamic requirements of hetero- and homogeneous nucleation. With the wetting angel model, the wetting angles of different catalysts in liquid iron have been calculated. The result shows that the wetting angle of most catalysts is smaller than 40, and the value of f() is far less than 1. The wetting angles of TiN, TiC and RE2O3.are smaller, while the wetting angle of MnO is bigger among the ordinary nucleation catalysts. The wetting angles calculated by this model are in agreement with the results of other research work.

关键词： heterogeneous nucleation, mathematical model, wetting angle, undercooling.

Geochemical simulation of the formation of brine and salt minerals based on Pitzer model in Caka Salt Lake

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Science china Earth Sciences 2004年第8期47卷 720-726页

作者： LIU Xingqi1, CAI Keqin2 & YU Shengsong3.1. Nanjing institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, china 2. china University of Geosciences, {3. 100083. china 3. institute of Salt Lakes, Chinese Academy of Sciences, Xining 810008, china Nanjing institute of Geography and Limnology Chinese Academy of Sciences Nanjing China china University of Geosciences Beijing China institute of Salt Lakes Chinese Academy of Sciences Xining China

The geochemical simulation of the formation of brine and salt minerals based on Pitzer model was made in Caka Salt Lake. The evolution of the mixed surface-water and the mineral sequences were calculated and compared with the hydrochemical compositions of the brine and the salt minerals of the deposit in Caka Salt Lake. The results show that the formation temperature of the lake is between 0°C and 5°C, which is well identical with other studies. The mixing of salt-karst water with the surface waters, neglected by the former researchers, is very important to the formation of the lake, indicating that the initial waters resulting in the formation of the lake are multi-source. It is the first time to use Pitzer model in china for making geochemical simulation of the formation and evolution of inland salt lake and satisfactory results have been achieved.

关键词： Pitzer model,Caka Salt Lake,geochemical simulation,salt-karst water.

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

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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 3.003., 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

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整合医学宣言

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203.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.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.“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

CHARACTERISTICS　OF　THE　FRACTALS　APPEARED　ON　ALUMINIUM　FOIL　IRRADIATED　BY　INTENSE　RELATIVISTIC　ELECTRON　BEAM

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中国科学院大学学报(中英文) 1995年第1期 27-40页

作者： Gao Huai-lin Pan Yu-li (china institute of atomic {3., beijing 102.13.

ＣＨＡＲＡＣＴＥＲＩＳＴＩＣＳＯＦＴＨＥＦＲＡＣＴＡＬＳＡＰＰＥＡＲＥＤＯＮＡＬＵＭＩＮＩＵＭＦＯＩＬＩＲＲＡＤＩＡＴＥＤＢＹＩＮＴＥＮＳＥＲＥＬＡＴＩＶＩＳＴＩＣＥＬＥＣＴＲＯＮＢＥＡＭ￥ＧａｏＨｕａｉ－ｌｉｎ；Ｐ... 详细信息

ＣＨＡＲＡＣＴＥＲＩＳＴＩＣＳＯＦＴＨＥＦＲＡＣＴＡＬＳＡＰＰＥＡＲＥＤＯＮＡＬＵＭＩＮＩＵＭＦＯＩＬＩＲＲＡＤＩＡＴＥＤＢＹＩＮＴＥＮＳＥＲＥＬＡＴＩＶＩＳＴＩＣＥＬＥＣＴＲＯＮＢＥＡＭ￥ＧａｏＨｕａｉ－ｌｉｎ；ＰａｎＹｕ－ｌｉ（ＣｈｉｎａＩｎｓｔ...

关键词： fractal fractal dimension inertial confinement fusion

The study on Sanmenxia annual flow forecasting in the Yellow River with mix regression model

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Science china(Technological Sciences) 2004年第z1期47卷 118-126页

作者： JIANG Xiaohui1, LIU Changming1,2, WANG Yu3.& WANG Hongrui1 1. beijing Normal University, beijing 100875, china 2. {3. of Geographic Science and Natural Resources, Chinese Academy of Sciences, beijing 100101, china 3. Reconnaissance, Planning, Design and Research {3., YRCC, Zhengzhou 450003. china beijing Normal University institute of Geographic Science and Natural Resources Chinese Academy of Sciences Reconnaissance Planning Design and Research Institute YRCC

This paper established mix regression model for simulating annual flow, in which annual runoff is auto-regression factor, precipitation, air temperature and water consumption are regression factors; we adopted 9 hypothesis climate change schemes to forecast the change of annual flow of Sanmenxia Station. The results show : (1) When temperature is steady, the average annual runoff will increase by 8.3. if precipitation increases by 10%; when precipitation decreases by 10%, the average annual runoff will decrease by 8.2%; when precipitation is steady, the average annual runoff will decrease by 2.4% if temperature increases 1℃; if temperature decreases 1℃, runoff will increase by 1.2%. The mix regression model can well simulate annual runoff. (2) As to 9 different temperature and precipitation scenarios, scenario 9 is the most adverse to the runoff of Sanmenxia Station of Yellow River; i.e. temperature increases 1℃ and precipitation decreases by 10%. Under this condition, the simulated average annual runoff decreases by 10.8%. On the contrary, scenario 1 is the best to the enhancement of runoff; i.e. when temperature decreases 1 ℃ precipitation will increase by 10%, which will make the annual runoff of Sanmenxia increase by 10.6%.

关键词： forecast annual flow, mix regression model, Sanmenxia Station

Petrogenesis and dating of the Kangding complex,Sichuan Province

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Science china Earth Sciences 2005年第5期48卷 622-634页

作者： CHEN Yuelong 1 , LUO Zhaohua 1 , ZHAO Junxiang, LI Zhihong, ZHANG Hongfei & SONG Biao 3.1. Faculty of Earth Sciences and Natural Resources, china University of Geosciences, beijing 100083. china 2. Faculty of Earth Sciences, china University of Geosciences, Wuhan 43.074, china 3. beijing SHRIMP Center, institute of Geology, Chinese Academy of Geological Sciences, beijing 10003., china Faculty of Earth Sciences and Natural Resources China University of Geosciences Beijing China Faculty of Earth Sciences China University of Geosciences Wuhan China beijing SHRIMP Center Institute of Geology Chinese Academy of Geological Sciences Beijing China

An analysis of major and trace element geochemistry and SHRIMP U-Pb zircon dating of mafic, intermediate, and felsic rocks from the Mianning metamorphic complex of Si- chuan Province was conducted. One of our conclusions is that a majority of the zircons crystal- lized between 721 and 773.Ma in a magmatic regime. The complexes contain early to late Pa- leo-proterozoic relict zircons from ancient continental crust. The oldest age, 2468 Ma, may rep- resent the basement of the Yangtze block. Overgrowth zircon rims and palingenetic zircons have been observed and dated, and are believed to have formed after crystallization, during Paleozoic and Mesozoic metamorphic-anatexis. We also conclude that depletion of Nb, Ta, HREE, in a spider-diagram normalized to primitive mantle and calc-alkaline association, implies that they formed in island-arc or under-plating settings.

关键词： Kangding complex, zircons, SHRIMP, tectonic setting.

Revision of seismic design codes corresponding to building damagesin the “5.12” Wenchuan earthquake

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Earthquake Engineering and Engineering Vibration 2010年第2期9卷 147-155页

作者： Wang Yayong institute of Earthquake Engineering, china Academy of Building Research, beijing 100013. china institute of Earthquake Engineering China Academy of Building Research Beijing 100013 China

A large number of buildings were seriously damaged or collapsed in the "5.12" Wenchuan earthquake. Based on field surveys and studies of damage to different types of buildings, seismic design codes have been updated. This paper briefly summarizes some of the major revisions that have been incorporated into the "Standard for classification of seismic protection of building constructions GB50223.2008" and "Code for Seismic Design of Buildings GB50011-2001." The definition of seismic fortification class for buildings has been revisited, and as a result, the seismic classifications for schools, hospitals and other buildings that hold large populations such as evacuation shelters and information centers have been upgraded in the GB50223.2008 Code. The main aspects of the revised GB50011-2001 code include: (a) modification of the seismic intensity specified for the Provinces of Sichuan, Shanxi and Gansu; (b) basic conceptual design for retaining walls and building foundations in mountainous areas; (c) regularity of building configuration; (d) integration of masonry structures and precast RC floors; (e) requirements for calculating and detailing stair shafts; and (f) limiting the use of single-bay RC frame structures. Some significant examples of damage in the epicenter areas are provided as a reference in the discussion on the consequences of collapse, the importance of duplicate structural systems, and the integration of RC and masonry structures.

关键词： Wenchuan earthquake earthquake damage to buildings revision of seismic design codes