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Genotype-dependent activation or repression of HBV enhancer Ⅱ by transcription factor COUP-TF1

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World Journal of Gastroenterology 2006年第37期12卷 6054-6058页

作者： Silke F Fischer Katja Schmidt Nicola Fiedler Dieter Glebe Christian Schüttler Jianguang Sun Wolfram H Gerlich Reinald Repp Stephan Schaefer Instiut für Medizinische Virologie Justus-Liebig-Universitaet Giessen Germany Zentrum für Kinderheilkunde Justus-Liebig-Universitaet Giessen Klinik für Kinder-und Jugendmedizin Klinikum Fulda Germany institut for Medizinische Mikrobiologie Immunologie und Hygiene Technische Universitaet München Germany Abteilung für Virologie Universitatt Rostock Germany

AIM: To study the expression of HBV enhancer Ⅱ by transcription factor COUP-TF1. METHODS: In order to study the regulation of HBV variants in the vicinity of the NRRE we cloned luciferase constructs containing the HBV enhancer Ⅱ from variants and from HBV genotypes A and D and cotransfected them together with expression vectors for COUP-TF1 into HepG2 cells. RESULTS: Our fi ndings show that enhancer Ⅱ of HBV genotype A is also repressed by COUP-TF1. In contrast, two different enhancer Ⅱ constructs of HBV genotype D were activated by COUP-TF1. The activation was independent of the NRRE because a natural variant with a deletion of nt 1763-1770 was still activated by COUP- TF1. CONCLUSION: Regulation of transcription of the HBV genome seems to differ among HBV genomes derived from different genotypes. These differences in transcriptional control among HBV genotypes may be the molecular basis for differences in the clinical course among HBV genotypes.

关键词：基因表达乙型病毒肝炎治疗病毒感染

Realization of double resonance for a bright frequencytunable source of narrowband entangled photons

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Chinese Physics B 2011年第2期20卷 235-238页

作者：杨剑赵天明张涵杨涛包小辉潘建伟 Hefei National Laboratory for Physical Sciences at Microscale and Department of Modern Physics University of Science and Technology of China physikalisches institut der universitaet Heidelberg

In this paper, we report an interesting phenomenon when precisely adjust the tuning crystal for double-resonance of a type-II configured parametric amplifier cavity, which is later verified as a cavity-enhanced effect in optics alignment. The theoretical result indicates that an angle accuracy error within 0.09° is necessary to achieve a high contrast ratio of 100：1 for a cavity with a finesse of about 205, which is crucial but high-demanding to get a high-quality narrowband entanglement source. Meanwhile, we figure out a method to release such a high requirement and get high visibility in a moderate-accuracy alignment.

关键词： optics alignment double-resonance cavity-enhanced narrowband entanglement

Nuclear Hexadecapole Deformation Effects on the Production of Super-Heavy Elements

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Chinese Physics Letters 2010年第6期27卷 66-69页

作者： WANG Nan DOU Liang ZHAO En-Guang Werner Scheid College of Physics Shenzhen University Shenzhen 518060 institute of Theoretical Physics Chinese Academy of Sciences Beijing 100190 Center of Theoretical Nuclear Physics National Laboratory of Heavy ion Accelerator Lanzhou 730000 institut fur Theoretisehe Physik Justus-Liebig-Universitat D-35392 Giessen Germany

我们为导致超重元素的一些冷熔化反应在在原子核，开车潜力和熔化可能性之间的相互作用潜力上调查原子 hexadecapole 变丑的效果。原子 hexadecapole 变丑显著地为一些反应隧道改变开车潜力和熔化可能性的结构，这被发现。[从作者抽象]

关键词：超重元素变形生产相互作用势核反应原子核冷聚变概率

The Role of Potential Structure in Excitation Functions of Synthesizing Superheavy Nuclei

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Communications in Theoretical Physics 2007年第4X期48卷 713-716页

作者： JIA Fei HUANG Tian-Heng XU Hu-Shan LI Jun-Qing WANG Nan W. Scheid institute of Modern Physics the Chinese Academy of Sciences Lanzhou 730000 China Research Center of Nuclear Theory of Laboratory of Heavy Ion Accelerator of Lanzhou Lanzhou 730000 China Graduate School of the Chinese Academy of Sciences Beijing 100039 China Department of Physics College of Science Shenzhen University Shenzhen 518060 China institut fuer Theoretische Physik Justus-Liebig-Universitaet 35392 Giessen Germany

The excitation functions of two very similar reaction channels, 58Fe+208Pb→265Hs+1n and 58Fe+209Bi →266Mt+1n are studied in the framework of the dinuclear system conception. The fusion probabilities are found to be strongly subject to the structure of the driving potential. Usually the fusion probability is hindered by a barrier from the injection channel towards the compound nuclear configuration. The barrier towards the mass symmetrical direction, however, also plays an important role for the fusion probability, because the barrier hinders the quasi-fission, and therefore helps fusion.

关键词：超重核激发函数原子核物理学结构

Theoretical Study on Properties of New Isotope 265Bh

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Communications in Theoretical Physics 2006年第4期45卷 681-686页

作者： ZHANG Hong-Fei ZUO Wei LI Jun-Qing Soojae Im MA Zhong-Yu CHEN Bao-Qju institute of Modern Physics the Chinese Academy of Sciences Lanzhou 730000 China Graduate School of＇the Chinese Academy of Sciences Beijin 100049 China Center of Theoretical Nuclear Physics National Laboratory of Heavy Ion Accelerator Lanzhou 730000 China institut für Theoretische Physik Justus-Liebig-Universitaet Heinrich-Buff-Ring 16 D 35392 Giessen Germany China institute of Atomic Energy Beijing 102413 China

The properties of nuclei belonging to the newly observed α-decay chain starting from ~(265)Bh have beenstudied.The axially deformed relativistic mean-field calculation with the force NL-Z2 has been performed in the blockedBCS approximation.Some ground state properties such as binding energies,deformations,spins,and parities,as well asQ-values of the α-decay for this decay chain have been calculated and compared with known experimental data.Goodagreement is found.The single-particle spectrum of the nucleus ~(265)Bh is studied and some new magic numbers are found,while the magnitudes of the shell gaps in superheavy nuclei are much smaller than those of nuclei before the actiniumregion,and the Fermi surfaces are close to the continuum.Thus the superheavy nuclei are usually not stable.Theα-decay lifetimes in the ~(265)Bh decay chain are evaluated by different formulae,and compared with experimental dáta.The methods which give good agreement with the data are selected.

关键词：相对均值场超重核结合能寿命

Results on non-SUSY searches for physics beyond standard model in pp collisions at CMS

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Frontiers of physics 2013年第3期8卷 257-269页

作者： Adrian Perieanu physikalisches institut B RWTH-Aachen Germany

In this paper a review of the results on searches for pnysics beyond the standard model in pp collisions with the CMS experiment at √s = 7 and 8 TeV is presented. Aspects of the analyses and their achieved limits on ... 详细信息

关键词： beyond standard model gauge bosons leptoquarks extra dimensions

ABC effect in double-pionic nuclear fusion and a pn resonance as its possible origin

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Chinese Physics C 2010年第9期34卷 1339-1341页

作者： M.Bashkanov physikalisches institut Univ.Tübingen

A short overview over the ABC phenomenon is given,which is known since 50 years without any satisfactory explanation.On the basis of new exclusive and kinematically complete data obtained with the WASA detector at COSY we show that this phenomenon is linked with a resonant energy dependence in the total cross section of isoscalar double-pionic fusion processes.This resonance structure is connected with the baryon-baryon system,in particular with the pn and ΔΔ systems,however,has a mass,which is 90 MeV below the nominal ΔΔ threshold and a width of only 70 MeV,i.e.,five times smaller than expected from a conventional t-channel ΔΔ scenario.

关键词： ABC effect baryon-baryon resonance double-pionic fusion isoscalar resonance

Photoproduction of ω-Mesons at ELSA and the role of azimuthal asymmetries

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Chinese Physics C 2009年第12期33卷 1146-1152页

作者： H. Schmieden Rheinische Friedrich-Wilhelms-Universitt Physikalisches Institut D-53115 Bonn Germany

Measurements of ω photoproduction of the Crystal-Barrel/TAPS experiment at the ELSA accelerator of Bonn University are presented which used linearly polarized tagged photon beam from threshold to Eγ = 1700MeV. The azimuthal asymmetries ∑and ∑πindicate s-channel resonance contributions on top of the established t-channel exchange processes. These findings are further enhanced by a very first measurement of the G-asymmetry which, in addition to the polarized photon beam, also requires a longitudinally polarized proton target. An intuitive interpretation of the specific sensitivity of the azimuthal asymmetries to the reaction mechanisms involved is given.

关键词： baryon resonances photoproduction vector mesons polarization

Crystallization of Ternary Amorphous Ni-Y-AI Films Observed by Scanning Tunneling Microscopy

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Chinese Physics Letters 1998年第12期15卷 901-903页

作者：王德亮 U.Geyer S.Schneider National Laboratory for Superconductivity Institute of PhysicsChinese Academy of SciencesBeijing 100080 physikalisches institut Universitaet Goettingen37073 GoettingenGermany

Ternary thin Ni90-xYxAl10 films have been prepared by using cocondensation method under ultrahigh vacuum condition.Films with a wide concentration range between Ni80Y10Al10 and Ni20Y70AI10 were found to be amorphous.With an addition of 10at.%AI the thermal stability of binary amorphous NiY has been enhanced.This is caused by a more closely packed structure and the bondings between AI and Ni,Y may also play an important role.The surface investigation by scanning tunneling microscopy suggests that the atom redistribution and the crystallization have been limited in the clusters with a size of about 10.5nm.The nanosized amorphous clusters of Ni80Y10Al10 film have changed to nanosized crystalline with the same size of about 12.3nm when crystallization occurred.

关键词： amorphous Ternary crystallization