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Charmed Baryon in Diquark Model

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原子核物理评论 2009年第S1期26卷 190-193页

作者： WANG Qing-wu1,3, ZHANG Peng-ming1,2(1 Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China 2 Center of Theoretical Nuclear Physics, Nation.l Laboratory of Heavy ion.Research Facility in Lanzhou,Lanzhou 730000, China 3 Graduate School of Chinese Academy of Sciences, Beijing 100049, China) Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China Graduate School of Chinese Academy of Sciences Beijing 100049China Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China Center of Theoretical Nuclear Physics National Laboratory of Heavy Ion Research Facility in LanzhouLanzhou 730000China

A diquark model is used to investigate single-charmed baryons. In this model,baryon is composed of two diquarks and an antiquark. Masses of lowest lying states with JP=1/2± are obtained. Baryons in our results are as heavy as other theoretic prediction. and we suggest that the five-quark components should be considered in any three-quark model for studying the charmed baryons.

关键词： charm diquark pentaquark

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Comparison of N-acetylcysteine protective effects against 12C6+ ion.induced pulmonary injury in female and male mice

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Comparison of N-acetylcysteine protective effects against 12...

第14届国际自由基学术大会

作者： Yang Liu a b Hong Zhang a c Luwei Zhang a c a Department of Medical Physics Institute of Modern physics Chinese Academy of Sciences Lanzhou 730000 China b Graduate School of Chinese Academy of Sciences Beijing 100039 China c Key Laboratory of Heavy ion.Radiation.Medicine of Gansu Province Lanzhou 730000 China

＜正＞Purpose: The aim of this study was to evaluate the protective effects and mechanisms of N- acetylcysteine （NAC） against 12C6+ ion.induced damage in the lung between female and male animals. Method: Kung-Ming m... 详细信息

关键词： N-acetylcysteine 12C6+ ion injury mouse lung reactive oxygen species

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毕尔巴鄂EUITI大学新教学楼

中国建筑装饰装修 2013年第2期 122-135页

作者： Cesar Azcarate Gomez ion.Zubiaurre Helena Sa Marques Carlos Guimaraes Aitor Ortiz

西班牙ACXT建筑事务所近日打造了一所大型的未来大学“城”。EUITI大学位于西班牙毕尔巴鄂的巴斯克地区。这个项目被列于教育部与法国波尔多大学共同打造的“国际卓越校园计划”之中。

关键词：毕尔巴鄂大学教学楼建筑事务所西班牙波尔多教育部校园

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Inheritance of the Number of Ovules per Ovary and Selection.of Cacao Genotypes

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American Journal of Plant Sciences 2013年第7期4卷 1387-1392页

作者： Rita de Cássia Bahia Ronan Xavier Corrêa Ronaldo Carvalho Santos Regina Celle Reboucas Machado Edna Dora Newman Luz ion.Santos Araújo Dário Ahnert Departamento de Ciências Biológicas Universidade Estadual de Santa CruzIlhéusBrasil Centro de Pesquisas do Cacau Comissao Executiva do Plano da Lavoura CacaueiraItabunaBrasil MARS Center for Cocoa Science ItajuípeBrasil

We have characterized the number of ovules per ovary (NoOV) in cacao plants originated from crossing the clones CCN 51 and TSH 1188 (segregating progeny) and determined the heritability of this characteristic in order to select plants with higher NoOV in this progeny. The NoOV was calculated as the average of 10 flowers per plant and ranged from 44.8 to 58.6 between the six clones (two parents and four clones belonging to their genealogy). In the progeny (n = 209 plants) the NoOV averaged 54.3 (range 44.1 to 67.8). The NoOV was distributed uniformly among the progeny indicating that this trait is condition.d by polygenes. Its heritability was estimated at 67.7%. The 32 plants with NoOV similar or superior to the genitor CCN 51 (highest amount among clones) were selected for use in the genetic improvement program. We showed that this population.is suitable for genetic mapping, molecular marker identification.and selection.of superior cacao genotypes.

关键词： Theobroma cacao Flower Trait Heritability Reproductive Biology Genetic Improvement

Probing Nuclear Symmetry Energy with Giant Dipole Resonances in Finite Nuclei

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原子核物理评论 2009年第S1期26卷 181-184页

作者： CAO Li-gang1,3,MA Zhong-yu2,3 (1 Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730000,China 2 China Institute of Atomic Energy,Beijing 102413,China 3 Center of Theoretical Nuclear Physics,Nation.l Laboratory of Heavy ion.Research Facility in Lanzhou,Lanzhou 730000,China) Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China Center of Theoretical Nuclear Physics National Laboratory of Heavy Ion Research Facility in LanzhouLanzhou 730000China China Institute of Atomic Energy Beijing 102413China Center of Theoretical Nuclear Physics National Laboratory of Heavy Ion Research Facility in LanzhouLanzhou 730000China

The relation.hip between the centroid energies of the isovector giant dipole resonance of finite nuclei and the symmetry energy has been studied. It is found the excitation.energies of the dipole resonance in finite nuclei are correlated linearly with the symmetry energy at and below the saturation.density. This linear correlation.leads to the symmetry energy at the saturation.density at the interval 33.0 MeV ≤ S(ρ0) ≤ 37.0 MeV,and the symmetry energy at ρ = 0.1 fm-3 at the interval 21.2-22.5 MeV. It is proposed that a precise measurement of the dipole mode in nuclei could set up an important constraint on the equation.of state for nuclear matter.

关键词： symmetry energy dipole resonance Pygmy resonance

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Measurements of fast-neutron capture cross section. for 159Tb and 169Tm

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Nuclear Science and Techniques 1998年第3期 10-13页

作者： Chen Jin Xiang, Shi Zhao Min, Tang Guo You, Zhang Guo Hui ( Institute of Heavy ion.Physics, Peking University, Beijing 100871) Lu Han Lin, Han Xiao Gang and Huang Xiao Long ( China Institute of Atomic Energy, Beijing 102413)

１ＩｎｔｒｏｄｕｃｔｉｏｎＦａｓｔｎｅｕｔｒｏｎｃａｐｔｕｒｅｃｒｏｓｓｅｃｔｉｏｎｓａｒｅｉｍｐｏｒｔａｎｔｆｏｒｔｈｅｕｎｄｅｒｓｔａｎｄｉｎｇｏｆｎｕｃｌｅａｒｒｅａｃｔｉｏｎｍｅｃｈａｎｉｓｍｓａｎｄｆｏ... 详细信息

１ＩｎｔｒｏｄｕｃｔｉｏｎＦａｓｔｎｅｕｔｒｏｎｃａｐｔｕｒｅｃｒｏｓｓｅｃｔｉｏｎｓａｒｅｉｍｐｏｒｔａｎｔｆｏｒｔｈｅｕｎｄｅｒｓｔａｎｄｉｎｇｏｆｎｕｃｌｅａｒｒｅａｃｔｉｏｎｍｅｃｈａｎｉｓｍｓａｎｄｆｏｒｖａｒｉｏｕｓａｐｐｌｉｃａｔｉ...

关键词： Tb 169 Tm 197 Au Neutron capture cross section. Activation.method

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地幔热柱和大陆的再造

世界地质 1993年第1期 41-42页

作者： Robert I.Hill ion.H.Campbell 李瑞雪

热柱传递出的热约占地幔内热预算的10％左右。以前认为热柱起源于一个温度较高的热边界层,并认为该层极可能在地幔底部,而板块运动则是地幔顶部冷的、致密边界层(大洋岩石圈内)向下俯冲的结果。据此,驱动热柱的构造活动和板块构造活动... 详细信息

热柱传递出的热约占地幔内热预算的10％左右。以前认为热柱起源于一个温度较高的热边界层,并认为该层极可能在地幔底部,而板块运动则是地幔顶部冷的、致密边界层(大洋岩石圈内)向下俯冲的结果。据此,驱动热柱的构造活动和板块构造活动很大程度上应是互相独立的过程。流体动力学模拟实验显示,地球内部的热柱起始于一个体积很大的“头”的上升,“头”的下部拖着一条窄细的管状“尾巴”并且通过它获得源源不断的热源物质。上升过程中,“头”部体积由于周围地幔的加入而大幅度增长。计算表明,一个起源于

关键词：热柱上隆玄武岩基性岩部分熔融地壳地球外壳地球内部陆壳大陆型地壳俯冲作用拉伸作用大陆地貌

A new design method for asymmetrical head gradient coils used for superconducting MRI scanner

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Progress in Natural Science:Materials Internation.l 2004年第9期 9-13页

作者： TANG Xin*, ZU Donglin and BAO Shanglian(Institute of Heavy ion.Physics, and Beijing Key Laboratory of Medical Physics and Engineering, School of Physics, Peking University, Beijing 100871, China) Institute of Heavy ion.Physics and Beijing Key Laboratory of Medical Physics and Engineering School of Physics Peking UniversityBeijing 100871 China

A novel approach of asymmetrical gradient coil design for head imaging in MRI (magnetic resonance imaging) is presented in this paper. The design is based on a modified target field method in which the stream function.is introduced to replace Blaine’s scheme for the length control. The transverse head coil calculated by this method has a high performance. The coil efficiency is 0.41 mT/m/A and the inductance is 512 μH. The coil has an inner diameter of 32 cm and a length of 45.8 cm. The size of the ROU (region.of uniformity) is 20 cm along the transverse direction.and 17 cm along the axial direction.and it is close to one end of the coil. The ROU of the coil matches the ROI (region.of interest) of human head very well. Compared with previous designs, our design has relatively high performance and the overlap between the ROU and the ROI is larger (the overlap percent is 95%).

关键词： MRI head imaging gradient coil target field method stream function.

Antikaon condensation.and in-medium （anti）kaon production.in β equilibrium nuclear matter

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Antikaon condensation and in-medium （anti）kaon production ...