1,083 research outputs found

    Mutation of SLC35D3 causes metabolic syndrome by impairing dopamine signaling in striatal D1 neurons

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    We thank Dr. Ya-Qin Feng from Shanxi Medical University, Dr. Tian-Yun Gao from Nanjing University and Dr. Yan-Hong Xue from Institute of Biophysics (CAS) for technical assistance in this study. We are very thankful to Drs. Richard T. Swank and Xiao-Jiang Li for their critical reading of this manuscript and invaluable advice. Funding: This work was partially supported by grants from National Basic Research Program of China (2013CB530605; 2014CB942803), from National Natural Science Foundation of China 1230046; 31071252; 81101182) and from Chinese Academy of Sciences (KSCX2-EW-R-05, KJZD-EW-L08). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.Peer reviewedPublisher PD

    Colour Connection and Diquark Fragmentation in e^+e^- \to c \bar c q \bar q \to h's Process

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    The hadronization effects induced by different colour connections of ccˉqqˉc\bar{c}q\bar{q} system in e+ee^+e^- annihilation are investigated by a toy model where diquark fragmentation is employed based on Pythia. It is found that the correlations between the charm baryons and charm antibaryons produced via diquark pair fragmentation are much stronger, and their momentum spectra are harder than those from the standard colour connection in Pythia.Comment: 10 pages, 7 figures and 1 table in latex with axodraw.sty, version to appear in PL

    Doubly Heavy Baryon Production at \gamma \gamma Collider

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    The inclusive production of doubly heavy baryons Ξcc\Xi_{cc} and Ξbb\Xi_{bb} at γγ\gamma\gamma collider is investigated. It is found that the contribution from the heavy quark pair QQQQ in color triplet and color sextet are important.Comment: errors/typos are correcte

    Nonlinear Dynamic Analysis of Direct Acting Tensioner of an Offshore Floating Platform

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    The offshore floating platform is the key equipment in offshore and gas development. The significant heave motions occur with the excitation of wind and waves, which will affect the safety of a riser system. A direct acting tensioner can be applied to reduce the effects on the riser system and be widely used on different kinds of offshore platforms. Based on the analysis of the structure and working principle of a direct acting tensioner (DAT), the nonlinear dynamic performance of DAT riser system was studied. Additionally, the dynamic model of the DAT riser system is established and the dynamic response was gained by the numerical integration method. The differences of dynamic responses were compared between a linear model and a nonlinear model. The response on different side of the equilibrium position is asymmetric because of the nonlinear stiffness of DAT. The results can be helpful for the design of DAT

    Possible interpretation of the ZbZ_b(10610) and ZbZ_b(10650) in a chiral quark model

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    Motivated by the two charged bottomonium-like resonances ZbZ_b(10610) and ZbZ_b(10650) newly observed by the Belle collaboration, the possible molecular states composed of a pair of heavy mesons, BBˉ,BBˉ,BBˉ,BsBˉB\bar{B}, B\bar{B}^*, B^*\bar{B}^*, B_s\bar{B}, etc (in S-wave), are investigated in the framework of chiral quark models by the Gaussian expansion method. The bound states BBˉB\bar{B}^* and BBˉB^*\bar{B}^* with quantum numbers I(JPC)=1(1+)I(J^{PC})=1(1^{+-}), which are good candidates for the Zb(10610)Z_b(10610) and Zb(10650)Z_b(10650) respectively, are obtained. Other three bound states BBˉB\bar{B}^* with I(JPC)=0(1++)I(J^{PC})=0(1^{++}), BBˉB^*\bar{B}^* with I(JPC)=1(0++),0(2++)I(J^{PC})=1(0^{++}), 0(2^{++}) are predicted. These states may be observed in open-bottom or hidden-bottom decay channel of highly excited Υ\Upsilon. When extending directly the quark model to the hidden color channel of the multi-quark system, more deeply bound states are found. Future experimental search of those states will cast doubt on the validity of applying the chiral constituent quark model to the hidden color channel directly.Comment: 13 pages, 1 figure, title and some arguments in the abstract and section 5 are revised, results unchange
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