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Analysis of heavy-ion-induced DNA strand breaks in plasmid pUC18

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Analysis of heavy-ion-induced DNA strand breaks in plasmid p...

COMMENT ON WHETHER THE CONTACT TERM CONTRIBUTES TO DOUBLE CHARGE EXCHANGE REACTION

中国作物学会2.07年全国作物遗传育种学术研讨会

作者： GUO Hui-jun~1 LIU Lu-xiang~1 LI Jia-cai~2.ZHAO Kui~3 SUI Li~3 ZHAO Lin-shu~1 ZHAO Shi-rong~1 1.The National Key Facility for Crop Gene Resources and Genetic Improvement,institute of Crop Science,Chinese Academy of Agricultural Sciences,beijing 100081,China 2.institute of High energy physics,Chinese Academy of Sciences,beijing 100093,China 3.department of nuclear physics,China institute of atomic energy,beijing 102.13.China

Plasmid DNA was irradiated or implanted by mixed particle field(CR)or lithium-ion-beam to detect strand *** primary results showed that mixed particle field could induce single and double strand breaks with positive linear-dose-effects;most of sequence changes induced by CR were point ***-ion-beam could induce strand breaks also,but it was only at dose of 2.Gy.

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来源： cnki会议评论

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中国科学院研究生院学报 1989年第2期6卷 48-51页

作者： Ma Weihsing (Center of Theoretical physics, CCAST (World Lab.), beijing) Yu Ziqiang ({2. of physics, Nankai University, Tianjin, China) He Hanxin (institute of atomic energy, Academia Sinica)

Based on the Olsson-Turn’s Lagrangian, contribution to DCX reaction from the contact term has been discussed, The result shows that althought there are some cancellations between the pole-and contact-term contributio... 详细信息

关键词： carefully contributions priori invariant Lagrangian 切二 nuclei Proceedings vertex Alamos

Integrated Numerical Experiment of an Intense RF Linac for CIAE Far-Infrared FEL

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Chinese journal of nuclear physics 1997年第2期19卷 121-127页

作者： Fu Shinian Chen Yinbao Huang Zhibin China institute of atomic {2.,P.O.Box 2.5(17),beijing 102.13 中国原子能科学院北京

An L band RF linac is now under installation at CIAE to provide intense electronbeam for a far-infrared free-electron laser *** linac consists of a DC thermionicgun,a subharmonic prebuncher,a buncher,an accelerating section and a beam transport *** the INEX(Integrated Numerical Experiment)conducted for prediction of the perfor-mance of the complex and the comparison of some of the simulation results with available ex-perimental data,it shows that the beam quality can satisfy our FEL requirements.

关键词： RF linac Free electron laser Integrated numerical experiments

Soil Properties in Two Soil Profiles from Terraces of the Nam Co Lake in Tibet,China

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Journal of Mountain Science 2009年第4期6卷 354-361页

作者： WANG Liqiang YI Chaolu Brigitta Sehiitt LIU Kexin ZHOU Liping institute of Tibetan Plateau Research Chinese Academy of Sciences Beijing 100085 China department of Physical Geography Freie University of Berlin Berlin12249 Germany State Key Laboratory of nuclear physics and Technology Peking University Beijing 100871 China College of Urban and Environmental Sciences Peking University Beijing100871 China

This article investigates the soil properties in two soil profiles from the terraces of the Nam Co Lake in Tibet,China. Profile 1,with a slope aspect to east,is 37 m,and profile 2.to southwest,is 32.m above the lake level. Twelve and nine layers were identified in profile 1 and profile 2.respectively,based on the color,texture,structure,moisture content,presence of carbonate,and root density. Grain sizes and measurements of water content,total organic carbon,total inorganic carbon,total carbon,pH value and electrical conductivity were all analyzed for each sample. The results show that soil is poorly developed because of sparse vegetation coverage and weak chemical weathering in the cold and arid area. The results also indicate that the soil properties are different between the two profiles and suggest that soil is better developed in profile 1 than in profile 2. These differences are ascribed to the dissimilarity of landform,vegetation and timing. Profile 1 faces to east as compared with profile 2.facing to southwest and gets less insolation and therefore less evaporation. Thus,vegetation grows better in profile 1 than in profile 2. Radiocarbon dating and OSL dating show that profile 1 underwent a longer soil forming process than profile 2.which is helpful for the soil development in profile 1.

关键词： Soil property Soil genesis Environmental change Marine isotope stage 3 (MIS 3)

Analyses of d-^(6,7)Li and d-^(7,9)Be Reactions

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Chinese journal of nuclear physics 1997年第2期19卷 103-109页

作者： Han Yinlu Shen Qingbiao Zhang Jingshang Liu Weiping Bai Xixiang China institute of atomic {2.,P.O.Box 2.5(41),beijing 102.13.hang Zhengjun Sun Xiuquan department of physics,Northwest University,Xian 710069 中国原子能科学院北京西北大学物理系陕西西安

Aiming at the production of 6He,8Li and 7Be radioactive beams,various nuclear dataof d+6,7Li and d+9Be reactions at incident energies spanning 0,1～30.0 MeV are obtained bycalculation with the distorted wave Born approximation,preequilibrium nuclear reaction andHauser-Feshbach（HF）*** cross sections of d+7Be reaction are also *** show that the experimental measurement for d+7Be reaction is feasible at HI-13 tandemaccelerator.

关键词： ~6He ~8Li and ~7Be Radioactive beam

用原位x射线小角散射研究块体非晶合金Zr_(55)Cu_(30)Al_(10)Ni_5的结构弛豫

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物理学报 2003年第9期52卷 2219-2222页

作者：柳义柳林王俊赵辉荣利霞董宝中中国原子能科学研究院北京102413 华中科技大学材料学院武汉430074 中国科学院高能物理研究所同步辐射实验室北京100039

应用同步辐射x射线小角散射法在原位对块体非晶合金Zr55Cu30 Al1 0 Ni5在等温退火过程中的微结构变化进行研究 .实验表明 :在等温退火过程中电子密度涨落反映了晶化之前的结构弛豫过程 ;在一定的退火温度下、随退火时间的增加 ,拓扑短... 详细信息

应用同步辐射x射线小角散射法在原位对块体非晶合金Zr55Cu30 Al1 0 Ni5在等温退火过程中的微结构变化进行研究 .实验表明 :在等温退火过程中电子密度涨落反映了晶化之前的结构弛豫过程 ;在一定的退火温度下、随退火时间的增加 ,拓扑短程序弛豫与化学短程序弛豫之间存在一个电子密度均匀化的过程 ;导致这两种弛豫过程转变的退火时间与退火温度有关 ,温度越高。

关键词：原位x射线小角散射块体非晶合金等温退火结构弛豫 Zr55Cu30Al10Ni5合金电子密度涨落

A Study of Intermediate energy Proton-160 Elastic Scattering Based on the α-Particle Model

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Communications in Theoretical physics 2007年第4期 711-714页

作者： ZHANG Rong~(1,2. YANG Yong-Xu~(1,+) LU Xiao~1 LI Qing-Run~31 department of physics,Guangxi Normal University,Guilin 541004,China2.College of Science,China University of Mining and Technology,Xuzhou 2.1008,China3 {2. of High energy physics,Academia Sinica,beijing 100039,China Depaxtment of physics Guangxi Normal UniversityGuilin 541004China College of Science China University of Mining and TechnologyXuzhou 221008China Depaxtment of physics Guangxi Normal UniversityGuilin 541004China institute of High energy {2. Academia SinicaBeijing 100039China

In the framework of KMT multiple scattering theory,an optical potential for the intermediate energyproton-;O elastic scattering is presented based on the α particle model of;*** differential cross sections,theanalyzing powers,and the total cross sections of the intermediate energy proton-;O scattering have been calculated byusing the obtained optical *** main features of the measured angular distributions of the cross section and theanalyzing power can be well *** calculated total cross sections are in good agreement with the experimentaldata at energies below 0.7 GeV and underestimate the data about 8% at higher energies.

关键词： proton-nucleus elastic scattering nuclear α-particle model optical potential

THE atomic WEIGHT OF CERIUM

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Chinese Chemical Letters 1994年第4期5卷 357-360页

作者： Tsing Lien CHANG.(department of Chemistry, Peking University, beijing 100871)Yong Fu LIU(China {2. of nuclear energy, beijing 102.13.

Isotopic ratio measurement was carried out for cerium on a thermal ionization mass spectrometer, which was calibrated by using a europium standard as substitute, yielding a new value of the atomic weight of cerium as ...

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一种烟碱乙酰胆碱受体(nChRs)显像前体化合物的合成及标记

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四川大学学报（自然科学版） 2002年第5期39卷 898-903页

作者：刘宁 Ding Y S Garza V Fowler J S 四川大学原子核科学技术研究所.辐射物理及技术教育部重点实验室成都610064 departmentofChemistryBrookhavenNationalLaboratory

以 2. 溴 3 吡啶酚和 (S) 2. 氮杂环丁烷羧酸为起始物 ,合成了一种以 N (CH3 ) 3 为取代基团的前体化合物 :6 [-N(CH3 ) 3 + I- ] A 85 380 .用此前体化合物进行18F标记取代 ,制得了可用于nChRs受体PET显像的标记化合物 :6 [18F] A... 详细信息

以 2. 溴 3 吡啶酚和 (S) 2. 氮杂环丁烷羧酸为起始物 ,合成了一种以 N (CH3 ) 3 为取代基团的前体化合物 :6 [-N(CH3 ) 3 + I- ] A 85 380 .用此前体化合物进行18F标记取代 ,制得了可用于nChRs受体PET显像的标记化合物 :6 [18F] A 85 380 .整个放射标记分离时间为 5 0～5 5min .其标记率不低于 38%～ 4 8% ,比活度可达 0 .74× 10 11Bq/ μmol.

关键词： nChRs 合成烟碱乙酰胆碱受体显像剂 ^18F标记显像前体药物烟草在瘾显像前体化合物