Creat membership Creat membership
Sign in

Forgot password?

Confirm
  • Forgot password?
    Sign Up
  • Confirm
    Sign In
home > search

Now showing items 1 - 16 of 12103

  • Determination of the number of psi(3686) events at BESIII

    Ablikim, M.   Achasov, M. N.   Ai, X. C.   Ambrose, D. J.   Amoroso, A.   An, F. F.   An, Q.   Bai, J. Z.   Ferroli, R. Baldini   Ban, Y.   Bennett, J. V.   Bertani, M.   Bian, J. M.   Boger, E.   Bondarenko, O.   Boyko, I.   Briere, R. A.   Cai, H.   Cai, X.   Cakir, O.   Calcaterra, A.   Cao, G. F.   Cetin, S. A.   Chang, J. F.   Chelkov, G.   Chen, G.   Chen, H. S.   Chen, J. C.   Chen, M. L.   Chen, S. J.   Chen, X.   Chen, X. R.   Chen, Y. B.   Chu, X. K.   Chu, Y. P.   Cronin-Hennessy, D.   Dai, H. L.   Dai, J. P.   Dedovich, D.   Deng, Z. Y.   Denig, A.   Denysenko, I.   Destefanis, M.   Ding, Y.   Dong, C.   Dong, J.   Dong, L. Y.   Dong, M. Y.   Du, S. X.   Fan, J. Z.   Fang, J.   Fang, S. S.   Fang, Y.   Fava, L.   Feldbauer, F.   Feng, C. Q.   Fu, C. D.   Gao, Q.   Gao, Y.   Goetzen, K.   Gong, W. X.   Gradl, W.   Greco, M.   Gu, M. H.   Gu, Y. T.   Guan, Y. H.   Guo, A. Q.   Guo, Y. P.   Han, Y. L.   Harris, F. A.   He, K. L.   He, M.   Held, T.   Heng, Y. K.   Hou, Z. L.   Hu, H. M.   Hu, T.   Huang, G. S.   Huang, J. S.   Huang, L.   Huang, X. T.   Hussain, T.   Ji, Q.   Ji, Q. P.   Ji, X. B.   Ji, X. L.   Jiang, L. L.   Jiang, X. S.   Jiao, J. B.   Jiao, Z.   Jin, D. P.   Jin, S.   Johansson, T.   Kalantar-Nayestanaki, N.   Kang, X. L.   Kang, X. S.   Kavatsyuk, M.   Kloss, B.   Kopf, B.   Kornicer, M.   Kupsc, A.   Kuehn, W.   Lai, W.   Lange, J. S.   Lara, M.   Larin, P.   Li, C. H.   Li, Cheng   Li, D. M.   Li, F.   Li, G.   Li, H. B.   Li, J. C.   Li, Kang   Li, Ke   Li, Lei   Li, P. R.   Li, Q. J.   Li, W. D.   Li, W. G.   Li, X. L.   Li, X. N.   Li, X. Q.   Li, X. R.   Li, Z. B.   Liang, H.   Liang, Y. F.   Liang, Y. T.   Liao, G. R.   Lin, D. X.   Liu, B. J.   Liu, C. X.   Liu, F. H.   Liu, Fang   Liu, Feng   Liu, H. B.   Liu, H. M.   Liu, Huihui   Liu, J.   Liu, J. P.   Liu, K.   Liu, K. Y.   Liu, Q.   Liu, S. B.   Liu, X.   Liu, Y. B.   Liu, Z. A.   Liu, Zhiqiang   Liu, Zhiqing   Loehner, H.   Lou, X. C.   Lu, H. J.   Lu, H. L.   Lu, J. G.   Lu, Y.   Lu, Y. P.   Luo, C. L.   Luo, M. X.   Luo, T.   Luo, X. L.   Lv, M.   Lyu, X. R.   Ma, F. C.   Ma, H. L.   Ma, Q. M.   Ma, S.   Ma, T.   Ma, X. Y.   Maas, F. E.   Maggiora, M.   Mao, Y. J.   Mao, Z. P.   Messchendorp, J. G.   Min, J.   Min, T. J.   Mitchell, R. E.   Mo, X. H.   Mo, Y. J.   Morales, C. Morales   Moriya, K.   Muchnoi, N. Yu.   Muramatsu, H.   Nefedov, Y.   Nikolaev, I. B.   Ning, Z.   Nisar, S.   Niu, S. L.   Niu, X. Y.   Olsen, S. L.   Ouyang, Q.   Pacetti, S.   Pelizaeus, M.   Peng, H. P.   Peters, K.   Ping, J. L.   Ping, R. G.   Poling, R.   Qi, M.   Qian, S.   Qiao, C. F.   Qin, X. S.   Qin, Z. H.   Qiu, J. F.   Rashid, K. H.   Redmer, C. F.   Ripka, M.   Rong, G.   Sarantsev, A.   Schoenning, K.   Shan, W.   Shao, M.   Shen, C. P.   Shen, X. Y.   Sheng, H. Y.   Shepherd, M. R.   Song, W. M.   Song, X. Y.   Sosio, S.   Spataro, S.   Sun, G. X.   Sun, J. F.   Sun, S. S.   Sun, Y. J.   Sun, Y. Z.   Sun, Z. J.   Tang, C. J.   Tang, X.   Tapan, I.   Thorndike, E. H.   Toth, D.   Uman, I.   Varner, G. S.   Wang, B.   Wang, D.   Wang, D. Y.   Wang, K.   Wang, L. L.   Wang, L. S.   Wang, M.   Wang, P.   Wang, P. L.   Wang, Q. J.   Wang, W.   Wang, X. F.   Wang, Y. D.   Wang, Y. F.   Wang, Y. Q.   Wang, Z.   Wang, Z. G.   Wang, Z. Y.   Wei, D. H.   Weidenkaff, P.   Wen, S. P.   Wiedner, U.   Wolke, M.   Wu, L. H.   Wu, Z.   Xia, L. G.   Xia, Y.   Xiao, D.   Xiao, Z. J.   Xie, Y. G.   Xiu, Q. L.   Xu, G. F.   Xu, L.   Xu, Q. J.   Xu, Q. N.   Xu, X. P.   Yan, W. B.   Yan, Y. H.   Yang, H. X.   Yang, Y.   Yang, Y. X.   Ye, H.   Ye, M.   Ye, M. H.   Yu, B. X.   Yu, C. X.   Yu, J. S.   Yuan, C. Z.   Yuan, Y.   Zafar, A. A.   Zeng, Y.   Zhang, B. X.   Zhang, B. Y.   Zhang, C. C.   Zhang, D. H.   Zhang, H. H.   Zhang, H. Y.   Zhang, J. J.   Zhang, J. Q.   Zhang, J. W.   Zhang, J. Y.   Zhang, J. Z.   Zhang, L.   Zhang, R.   Zhang, S. H.   Zhang, X. J.   Zhang, X. Y.   Zhang, Y. H.   Zhang, Yao   Zhang, Z. H.   Zhang, Z. P.   Zhang, Z. Y.   Zhao, G.   Zhao, J. W.   Zhao, J. Z.   Zhao, Lei   Zhao, Ling   Zhao, M. G.   Zhao, Q.   Zhao, Q. W.   Zhao, S. J.   Zhao, T. C.   Zhao, Y. B.   Zhao, Z. G.   Zhemchugov, A.   Zheng, B.   Zheng, J. P.   Zheng, Y. H.   Zhong, B.   Zhou, L.   Zhou, X.   Zhou, X. K.   Zhou, X. R.   Zhou, X. Y.   Zhu, K.   Zhu, K. J.   Zhu, X. L.   Zhu, Y. C.   Zhu, Y. S.   Zhu, Z. A.   Zhuang, J.   Zou, B. S.   Zou, J. H.  

    The numbers of psi(3686) events accumulated by the BESIII detector for the data taken during 2009 and 2012 are determined to be (107.0 +/- 0.8)x10(6) and (341.1 +/- 2.1)x10(6), respectively, by counting inclusive hadronic events, where the uncertainties are systematic and the statistical uncertainties are negligible. The number of events for the sample taken in 2009 is consistent with that of the previous measurement. The total number of psi(3686) events for the two data taking periods is (448.1 +/- 2.9) x 10(6).
    Download Collect
  • Metallic impurity sources behavior during ICRH in EAST

    Urbanczyk, G.   Zhang, X. J.   Colas, L.   Ekedahl, A.   Heuraux, S.   Li, J. G.   Qin, C. M.   Zhao, Y. P.   Zhang, L.   Yang, X. D.  

    High-Z impurities production is often observed during Ion Cyclotron Range of Frequencies (ICRF) waves' injection, which are likely due to RF sheath formation on solid materials. Based on Extreme UV (EUV) spectrometry data, this study in EAST consists in extracting information on plasma-surface interactions during ICRH. Intensities of the different spectral lines normalized to line-integrated plasma density, exhibit different parametric dependencies over scans of ICRH and LH power and for different toroidal phasing between straps. Materials close and magnetically-connected to an active antenna tend to show better correlation with ICRF parameters -such as power and feeding scheme -than those which are far away or not connected. ICRF phasing did not have influence on impurity, probably due to the absence of feedback control. It is further shown that the plasma content in impurities from divertor region better correlates with the total injected power rather than with ICRF power.
    Download Collect
  • Experimental analysis of the ICRF waves coupling in EAST

    Zhang, J. H.   Zhang, X. J.   Cheng, Y.   Qin, C. M.   Zhao, Y. P.   Mao, Y. Z.   Yuan, S.   Wang, L.   Ju, S. Q.   Chen, G.   Wan, B. N.   Gong, X. Z.   Qian, J. P.   Zhang, T.   Li, J. G.   Song, Y. T.   Yang, Y. Q.   Chen, Z.   Wang, J. H.   Lin, Y.   Taylor, G.   Wukitch, S.   Noterdaeme, J. M.   Hosea, J. C.   Kumazawa, R.   Seki, T.   Saito, K.   Kasahara, H.  

    The experiments were carried out to study the coupling characteristics of the I-port antenna in the ion cyclotron range of frequencies (ICRF) in EAST. The dependencies of the coupling resistance on various parameters including the antenna position, the central electron density, gas injection and the antenna phasing have been studied. The results obtained show that the experimental data are consistent with theoretical simulations. We find that the antenna loading decreases sharply at the L-H transition due to the change of the plasma density profiles in the scrape-off layer (SOL). The effect of the low hybrid wave (LHW) on the ICRF coupling during the H-mode is observed. The theoretical interpretation of the results is discussed, together with the efficient methods to optimize the coupling efficiency.
    Download Collect
  • Investigation of energy confinement during ICRF heating on EAST

    Yang, Y. Q.   Zhang, X. J.   Zhao, Y. P.   Qin, C. M.   Cheng, Y.   Mao, Y. Z.   Yang, H.   Yuan, S.   Wang, L.   Ju, S. Q.   Chen, G.   Zhang, J. H.   Wang, J. H.   Chen, Z.   Wan, B. N.   Gong, X. Z.   Qian, J. P.   Zhang, T.   Li, J. G.   Song, Y. T.   Lin, Y.   Taylor, G.   Hosea, J. C.   Perkins, R. J.   Wukitch, S.   Noterdaeme, J. M.   Kumazawa, R.   Seki, T.   Saito, K.   Kasahara, H.  

    A summary is given on recent experiments in L-mode with ion cyclotron resonance heating (ICRH) of hydrogen minority in deuterium plasmas on EAST. Experiments show a degradation of confinement with increasing power. Furthermore, the energy confinement time increases with plasma current and magnetic field, whereas it is insensitive to line averaged density. Minority heating has been found to be efficient, and parameters were optimized to maximize its efficiency. ICRH in lower hybrid waves heated plasma was also investigated.
    Download Collect
  • Study on characteristics of water resources in Beijing in recent 15 years

    Chuan, L. M.   Zheng, H. G.   Zhao, J. J.   Wang, A. L.   Zhang, X. J.  

    In order to understand the characteristics of water supply and water usage in Beijing in recent 15 years, a variety of statistical datasets were collected and field investigations were carried out, to analyze the total water resource, the characteristics and trends of water resource supply, utilization and distribution during 2000-2014. The results showed that the total amount of water resources in Beijing is maintained at 1.61 similar to 3.95 billion m(3), and the surface water accounts for about 1/3, and the groundwater accounts for 2/3. Agricultural water and living water were the dominated consumption in the past 15 years in Beijing, accounted for 35.3% and 38.9% of the total amount, followed by industrial water, which accounting for 17.9% of total water consumption, and water used in environment is relatively small, only accounting for 7.8% of the total amount. This study can provide theoretical support for the establishment and management of water conservation policies and the rational utilization of water resources in Beijing.
    Download Collect
  • RF,Disruption,and Thermal Stress Analyses of EAST I and B Port Antennas

    Zhou, L.   Beck, W. K.   Koert, P.   Doody, J.   Vieira, R. F.   Wukitch, S. J.   Granetz, R. S.   Irby, J. H.   Yang, Q. X.   Qin, C. M.   Zhang, X. J.   Zhao, Y. P.  

    Chinese Academy of Sciences Institute of Plasma Physics and Massachusetts Institute of Technology Plasma Science and Fusion Center have been collaborating on experimental advanced superconducting tokamak (EAST). Presented in this paper are RF, disruption, and thermal stress analyses of EAST antennas. Analyzed are I port four-strap and B port 2 x 2 strap antennas, which are currently installed on EAST. As for RF analysis, scattering parameters are checked to make sure that the antennas are loaded, and then electric field parallel to magnetic field are checked to find out if they are below the permissible level. As for disruption analysis, mechanical stresses for both straps with the support box and Faraday screen are obtained. As for thermal stress analysis, temperature and thermal stress for a typical strap and a Faraday tube were presented. All analyses were performed by COMSOL commercial finite-element analysis software package version 5 or 5.2.
    Download Collect
  • A New Radiation Strip line ICRF Antenna Design for EAST Tokamak

    Qin, C. M.   Braun, F.   Zhao, Y. P.   Wan, B. N.   Li, J.   Zhang, X. J.   Yang, Q. X.   Yuan, S.   Notedame, J. -M.   Kasahara, H.  

    A new type of toroidal long Radiation Stripline Antenna (RSA) is presented, which can effectively improve antenna radiation, leading in reduction of max voltage on transmission line and decrease of the sensitivity to ELM's of the ICRF system at some frequencies. Based on the new concept, a 4-straps RSA is proposed for EAST device. Using 3D computing simulator code (HESS), RF current distribution, S-parameters and electromagnetic field distribution on and near the RSA ICRF antenna are analyzed and compared with present ICRF antenna on EAST.
    Download Collect
  • LHCD and ICRF heating experiments in H-mode plasmas on EAST

    Zhang, X. J.   Zhao, Y. P.   Wan, B. N.   Ding, B. J.   Xu, G. S.   Gong, X. Z.   Li, J. G.   Lin, Y.   Taylor, G.   Noterdaeme, J. M.   Braun, F.   Wukitch, S.   Magne, R.   Litaudon, X.   Kumazawa, R.   Kasahara, H.  

    An ICRF system with power up to 6.0 MW and a LHCD system up to 4MW have been applied for heating and current drive experiments on EAST. Intensive lithium wall coating was intensively used to reduce particle recycling and Hydrogen concentration in Deuterium plasma, which is needed for effective ICRF and LHCD power absorption in high density plasmas. Significant progress has been made with ICRF heating and LHW current drive for realizing the H-mode plasma operation in EAST. In 2010, H-mode was generated and sustained by LHCD alone, where lithium coating and gas puffing launcher mouth were applied to improve the LHCD power coupling and penetration into the core plasmas at high density of H-modes. During the last two experimental campaigns, ICRF Heating experiments were carried out at the fixed frequency of 27MHz, achieving effective ions and electrons heating with the H Minority Heating (H-MH) mode, where electrons are predominantly heated by collisions with high energy minority ions. The H-MH mode gave the best plasma performance, and realized H-mode alone in 2012. Combination of ICRF and LHW power injection generated the H-mode plasmas with various ELMy characteristics. The first successful application of the ICRF Heating in the D (He3) plasma was also achieved. The progress on ICRF heating, LHCD experiments and their application in achieving H-mode operation from last two years will be discussed in this report.
    Download Collect
  • Selection of Optimal Shape Features for Staging Hepatic Fibrosis on CT Image

    Zhang, X. J.   Zhou, B.   Ma, Kevin   Qu, X. H.   Tan, X. M.   Gao, X.   Yan, W.   Long, L. L.   Fujita, Hiroshi  

    Computer-aided diagnosis of hepatic fibrosis is playing an increasing role in clinical visits, while the study based on shape features diagnosis is still in the exploratory stage. In order to improve efficiency of interpretation of medical images and diagnostic accuracy, a novel method for informatics feature selection from hepatic shape is proposed in this paper. First, the contour profile of liver is extracted from contrast-enhanced CT images. Then a difference edge curve is obtained from substation of the profile with the polynomial fitting curve, from which ten surface shape features are calculated for the input parameters of the SVM classifier. Finally, feature selection algorithm with cross-validation leave-one-out method is applied to check each combination of all features to provide the accurate rate of staging the fibrosis degree. The result shows that the optimal number of features ranges from two to six among all ten features; statistical analysis shows that maximum roughness depth (R-max), maximum profile valley depth (R-p), maximum profile peak height (R-m), mean spacing of the profile irregularities (S-m) and mean spacing of local peaks of the profile (S) have the greater weight than the other features. The experimental result indicates that the accuracy rate of shape feature is considerably higher than other types of features.
    Download Collect
  • Determination of the number of psi ' events at BESIII

    Ablikim, M.   Achasov, M. N.   Albayrak, O.   Ambrose, D. J.   An, F. F.   An, Q.   Bai, J. Z.   Ban, Y.   Becker, J.   Bennett, J. V.   Berger, N.   Bertani, M.   Bian, J. M.   Boger, E.   Bondarenko, O.   Boyko, I.   Briere, R. A.   Bytev, V.   Cai, X.   Cakir, O.   Calcaterra, A.   Cao, G. F.   Cetin, S. A.   Chang, J. F.   Chelkov, G.   Chen, G.   Chen, H. S.   Chen, J. C.   Chen, M. L.   Chen, S. J.   Chen, X.   Chen, Y. B.   Cheng, H. P.   Chu, Y. P.   Cronin-Hennessy, D.   Dai, H. L.   Dai, J. P.   Dedovich, D.   Deng, Z. Y.   Denig, A.   Denysenko, I.   Destefanis, M.   Ding, W. M.   Ding, Y.   Dong, L. Y.   Dong, M. Y.   Du, S. X.   Fang, J.   Fang, S. S.   Fava, L.   Feng, C. Q.   Ferroli, R. B.   Friedel, P.   Fu, C. D.   Gao, Y.   Geng, C.   Goetzen, K.   Gong, W. X.   Gradl, W.   Greco, M.   Gu, M. H.   Gu, Y. T.   Guan, Y. H.   Guo, A. Q.   Guo, L. B.   Guo, T.   Guo, Y. P.   Han, Y. L.   Harris, F. A.   He, K. L.   He, M.   He, Z. Y.   Held, T.   Heng, Y. K.   Hou, Z. L.   Hu, C.   Hu, H. M.   Hu, J. F.   Hu, T.   Huang, G. M.   Huang, G. S.   Huang, J. S.   Huang, L.   Huang, X. T.   Huang, Y.   Huang, Y. P.   Hussain, T.   Ji, C. S.   Ji, Q.   Ji, Q. P.   Ji, X. B.   Ji, X. L.   Jiang, L. L.   Jiang, X. S.   Jiao, J. B.   Jiao, Z.   Jin, D. P.   Jin, S.   Jing, F. F.   Kalantar-Nayestanaki, N.   Kavatsyuk, M.   Kopf, B.   Kornicer, M.   Kuehn, W.   Lai, W.   Lange, J. S.   Leyhe, M.   Li, C. H.   Li, Cheng   Li, Cui   Li, D. M.   Li, F.   Li, G.   Li, H. B.   Li, J. C.   Li, K.   Li, Lei   Li, Q. J.   Li, S. L.   Li, W. D.   Li, W. G.   Li, X. L.   Li, X. N.   Li, X. Q.   Li, X. R.   Li, Z. B.   Liang, H.   Liang, Y. F.   Liang, Y. T.   Liao, G. R.   Liao, X. T.   Lin, D.   Liu, B. J.   Liu, C. L.   Liu, C. X.   Liu, F. H.   Liu, Fang   Liu, Feng   Liu, H.   Liu, H. B.   Liu, H. H.   Liu, H. M.   Liu, H. W.   Liu, J. P.   Liu, K.   Liu, K. Y.   Liu, Kai   Liu, P. L.   Liu, Q.   Liu, S. B.   Liu, X.   Liu, Y. B.   Liu, Z. A.   Liu, Zhiqiang   Liu, Zhiqing   Loehner, H.   Lu, G. R.   Lu, H. J.   Lu, J. G.   Lu, Q. W.   Lu, X. R.   Lu, Y. P.   Luo, C. L.   Luo, M. X.   Luo, T.   Luo, X. L.   Lv, M.   Ma, C. L.   Ma, F. C.   Ma, H. L.   Ma, Q. M.   Ma, S.   Ma, T.   Ma, X. Y.   Maas, F. E.   Maggiora, M.   Malik, Q. A.   Mao, Y. J.   Mao, Z. P.   Messchendorp, J. G.   Min, J.   Min, T. J.   Mitchell, R. E.   Mo, X. H.   Morales, C. Morales   Muchnoi, N. Yu.   Muramatsu, H.   Nefedov, Y.   Nicholson, C.   Nikolaev, I. B.   Ning, Z.   Olsen, S. L.   Ouyang, Q.   Pacetti, S.   Park, J. W.   Pelizaeus, M.   Peng, H. P.   Peters, K.   Ping, J. L.   Ping, R. G.   Poling, R.   Prencipe, E.   Qi, M.   Qian, S.   Qiao, C. F.   Qin, L. Q.   Qin, X. S.   Qin, Y.   Qin, Z. H.   Qiu, J. F.   Rashid, K. H.   Rong, G.   Ruan, X. D.   Sarantsev, A.   Schaefer, B. D.   Shao, M.   Shen, C. P.   Shen, X. Y.   Sheng, H. Y.   Shepherd, M. R.   Song, X. Y.   Spataro, S.   Spruck, B.   Sun, D. H.   Sun, G. X.   Sun, J. F.   Sun, S. S.   Sun, Y. J.   Sun, Y. Z.   Sun, Z. J.   Sun, Z. T.   Tang, C. J.   Tang, X.   Tapan, I.   Thorndike, E. H.   Toth, D.   Ullrich, M.   Varner, G. S.   Wang, B. Q.   Wang, D.   Wang, D. Y.   Wang, K.   Wang, L. L.   Wang, L. S.   Wang, M.   Wang, P.   Wang, P. L.   Wang, Q. J.   Wang, S. G.   Wang, X. F.   Wang, X. L.   Wang, Y. F.   Wang, Z.   Wang, Z. G.   Wang, Z. Y.   Wei, D. H.   Wei, J. B.   Weidenkaff, P.   Wen, Q. G.   Wen, S. P.   Werner, M.   Wiedner, U.   Wu, L. H.   Wu, N.   Wu, S. X.   Wu, W.   Wu, Z.   Xia, L. G.   Xia, Y. X.   Xiao, Z. J.   Xie, Y. G.   Xiu, Q. L.   Xu, G. F.   Xu, G. M.   Xu, Q. J.   Xu, Q. N.   Xu, X. P.   Xu, Z. R.   Xue, F.   Xue, Z.   Yan, L.   Yan, W. B.   Yan, Y. H.   Yang, H. X.   Yang, Y.   Yang, Y. X.   Ye, H.   Ye, M.   Ye, M. H.   Yu, B. X.   Yu, C. X.   Yu, H. W.   Yu, J. S.   Yu, S. P.   Yuan, C. Z.   Yuan, Y.   Zafar, A. A.   Zallo, A.   Zeng, Y.   Zhang, B. X.   Zhang, B. Y.   Zhang, C.   Zhang, C. C.   Zhang, D. H.   Zhang, H. H.   Zhang, H. Y.   Zhang, J. Q.   Zhang, J. W.   Zhang, J. Y.   Zhang, J. Z.   Zhang, LiLi   Zhang, R.   Zhang, S. H.   Zhang, X. J.   Zhang, X. Y.   Zhang, Y.   Zhang, Y. H.   Zhang, Z. P.   Zhang, Z. Y.   Zhang, Zhenghao   Zhao, G.   Zhao, H. S.   Zhao, J. W.   Zhao, K. X.   Zhao, Lei   Zhao, Ling   Zhao, M. G.   Zhao, Q.   Zhao, Q. Z.   Zhao, S. J.   Zhao, T. C.   Zhao, Y. B.   Zhao, Z. G.   Zhemchugov, A.   Zheng, B.   Zheng, J. P.   Zheng, Y. H.   Zhong, B.   Zhong, Z.   Zhou, L.   Zhou, X. K.   Zhou, X. R.   Zhu, C.   Zhu, K.   Zhu, K. J.   Zhu, S. H.   Zhu, X. L.   Zhu, Y. C.   Zhu, Y. M.   Zhu, Y. S.   Zhu, Z. A.   Zhuang, J.   Zou, B. S.   Zou, J. H.  

    The number of psi' events accumulated by the BESIII experiment from March 3 through April 14, 2009, is determined by counting inclusive hadronic events. The result is 106.41x(1.00+/-0.81%)x10(6). The error is systematic dominant; the statistical error is negligible.
    Download Collect
  • Selection of Optimal Shape Features for Staging Hepatic Fibrosis on CT Image

    Zhang, X. J.   Zhou, B.   Ma, Kevin   Qu, X. H.   Tan, X. M.   Gao, X.   Yan, W.   Long, L. L.   Fujita, Hiroshi  

    Download Collect
  • A STANDING-WAVE THERMOACOUSTIC ENGINE DRIVEN BY LIQUID NITROGEN

    Wang, K.   Qiu, L. M.   Wang, B.   Sun, D. M.   Lou, P.   Rao, J. F.   Zhang, X. J.  

    Thermoacoustic oscillation at cryogenic temperatures, such as Taconis oscillation, has been typically suppressed in the former studies, and few efforts have been made to enhance it. We proposed a standing-wave thermoacoustic engine (TE) driven by liquid cryogens instead of the conventional heat to enhance the thermoacoustic effects and utilize the cold energy. Experimental and theoretical work has been performed on a self-made standing-wave TE to demonstrate the feasibility and the operating characteristics of the engine driven by the liquid nitrogen. Experiments show that with nitrogen at 0.5 MPa as a working gas, a pressure ratio of 1.21 is obtained on the TE driven by liquid nitrogen with a much lower temperature difference along the stack compared to that of the conventional TE. The onset temperature difference decreases by 28.9% with helium at 0.63 MPa as a working gas, compared to that of the conventional TE. This study verifies the feasibility of enhancing the thermoacoustic oscillation at cryogenic temperatures. The TEs driven by liquid cryogens such as liquid nitrogen and liquefied nature gas (LNG), may be an alternative for recovering the cold energy.
    Download Collect
  • Structural changes upon lithium insertion in Ni0.5TiOPO4

    Essehli, R.   El Bali, B.   Faik, A.   Benmokhtar, S.   Manoun, B.   Zhang, Y.   Zhang, X. J.   Zhou, Z.   Fuess, H.  

    Nickel titanium oxyphosphate Ni0.5TiOPO4 (NTP), was prepared by co-precipitation route. Its structure was determined by single crystal X-ray diffraction. The compound crystallizes in the monoclinic system, S.G: P2(1)/c [a = 7.333(1) angstrom, b = 7.316(2) angstrom, c = 7.339(2) angstrom, beta = 119.62(3)degrees, Z = 4, R-1 = 0.0142, wR(2) = 0.0429]. The structure might be described as a {TiOPO4} framework made of corner-sharing [TiO6] octahedra chains running parallel to [0 0 1] and cross linked by phosphate [PO4] tetrahedral, where half of octahedral cavities created are occupied by Ni atoms, and the other half of octahedral sites are vacant. During the first discharge, the NTP electrode delivered a capacity of 530 mAh/g, upon cycling within 0.5-4 V. To understand the electrochemical reaction mechanism using different characterization techniques viz. in situ synchrotron diffraction. Reciprocal magnetic susceptibility (chi(-1)) of NTP, between 4 and 300 K, shows an almost linear behavior and can be fitted by the simple Curie-Weiss law. (C) 2012 Elsevier B. V. All rights reserved.
    Download Collect
  • Electrodeposition of zinc-nickel coating on AZ31 magnesium alloy

    Zhu, P.   Wang, L. Y.   Zhang, X. J.   Zhou, M.  

    Although magnesium and its alloys have excellent physical and mechanical properties, they arc highly susceptible to corrosion to hinder their widespread use in many applications. In this paper, zinc-nickel coating is directly electrodeposited on AZ31 magnesium alloy using an aqueous solution containing zinc fluoride, basic nickel carbonate, and citrate. Various parameters such as pH value, additive, complexing agent, current density, and electrodcpositing temperature are studied to understand electrodepositing zinc-nickel coating on AZ31 magnesium alloy. SEM observation shows that the morphology of zinc-nickel coating is typical dense nodular structure, and the coating compositions are found to be 86 wt% zincs and 14 wt% nickels. Adhesion strength result shows that there is not peeling for zinc-nickel coating with the grid of 1 x 1 cm treated by the adhesive tape. The immersion test in 5% NaCl solution reveals that the zinc-nickel coating has good dense property.
    Download Collect
  • Polypropylene hybrid composites with wood flour and needle-like minerals

    Lin, Z. D.   Hong, X. J.   Chen, C.   Guan, Z. X.   Zhang, X. J.   Tan, S. Z.   Huang, Z. Y.  

    Polypropylene (PP) hybrid composites filled with wood flour and needle-like minerals, including SiO2 whiskers, CaCO3 whiskers and milled glass fibres, were prepared by melt blending and injection moulding. Maleic anhydride grafted PP was used as a compatibiliser. The effect of the needle-like minerals' type and content on the crystallisation and melting behaviour, morphology, mechanical properties, moisture resistance and thermal stability of the hybrid composites were studied. The results showed that SiO2 and CaCO3 whiskers exhibited strong heterogeneous nucleation and promotion effect on PP crystallisation. Milled glass fibre was superior to enhance the tensile, flexural and impact properties of hybrid composites. Maleic anhydride grafted PP was selective for the interfacial modification of hybrid fillers and the best modification effect achieved in the composites hybridised with milled glass fibre. Comparatively speaking, the optimal proportions between the three kinds of needle-like minerals and the wood flour for the hybrid modification of PP all lie in 1.5:48.5.
    Download Collect
  • Determination of the number of J/psi events with J/psi -> inclusive decays

    Ablikim, M.   Achasov, M. N.   Ambrose, D. J.   An, F. F.   An, Q.   An, Z. H.   Bai, J. Z.   Ban, Y.   Becker, J.   Berger, N.   Bertani, M.   Bian, J. M.   Boger, E.   Bondarenko, O.   Boyko, I.   Briere, R. A.   Bytev, V.   Cai, X.   Calcaterra, A.   Cao, G. F.   Chang, J. F.   Chelkov, G.   Chen, G.   Chen, H. S.   Chen, J. C.   Chen, M. L.   Chen, S. J.   Chen, Y.   Chen, Y. B.   Cheng, H. P.   Chu, Y. P.   Cronin-Hennessy, D.   Dai, H. L.   Dai, J. P.   Dedovich, D.   Deng, Z. Y.   Denig, A.   Denysenko, I.   Destefanis, M.   Ding, W. M.   Ding, Y.   Dong, L. Y.   Dong, M. Y.   Du, S. X.   Fang, J.   Fang, S. S.   Fava, L.   Feldbauer, F.   Feng, C. Q.   Ferroli, R. B.   Fu, C. D.   Fu, J. L.   Gao, Y.   Geng, C.   Goetzen, K.   Gong, W. X.   Gradl, W.   Greco, M.   Gu, M. H.   Gu, Y. T.   Guan, Y. H.   Guo, A. Q.   Guo, L. B.   Guo, Y. P.   Han, Y. L.   Hao, X. Q.   Harris, F. A.   He, K. L.   He, M.   He, Z. Y.   Held, T.   Heng, Y. K.   Hou, Z. L.   Hu, H. M.   Hu, J. F.   Hu, T.   Huang, B.   Huang, G. M.   Huang, J. S.   Huang, X. T.   Huang, Y. P.   Hussain, T.   Ji, C. S.   Ji, Q.   Ji, X. B.   Ji, X. L.   Jia, L. K.   Jiang, L. L.   Jiang, X. S.   Jiao, J. B.   Jiao, Z.   Jin, D. P.   Jin, S.   Jing, F. F.   Kalantar-Nayestanaki, N.   Kavatsyuk, M.   Kuehn, W.   Lai, W.   Lange, J. S.   Leung, J. K. C.   Li, C. H.   Li, Cheng   Li, Cui   Li, D. M.   Li, F.   Li, G.   Li, H. B.   Li, J. C.   Li, K.   Li, Lei   Li, N. B.   Li, Q. J.   Li, S. L.   Li, W. D.   Li, W. G.   Li, X. L.   Li, X. N.   Li, X. Q.   Li, X. R.   Li, Z. B.   Liang, H.   Liang, Y. F.   Liang, Y. T.   Liao, G. R.   Liao, X. T.   Liu, B. J.   Liu, C. L.   Liu, C. X.   Liu, C. Y.   Liu, F. H.   Liu, Fang   Liu, Feng   Liu, H.   Liu, H. B.   Liu, H. H.   Liu, H. M.   Liu, H. W.   Liu, J. P.   Liu, K. Y.   Liu, Kai   Liu, Kun   Liu, P. L.   Liu, S. B.   Liu, X.   Liu, X. H.   Liu, Y.   Liu, Y. B.   Liu, Z. A.   Liu, Zhiqiang   Liu, Zhiqing   Loehner, H.   Lu, G. R.   Lu, H. J.   Lu, J. G.   Lu, Q. W.   Lu, X. R.   Lu, Y. P.   Luo, C. L.   Luo, M. X.   Luo, T.   Luo, X. L.   Lu, M.   Ma, C. L.   Ma, F. C.   Ma, H. L.   Ma, Q. M.   Ma, S.   Ma, T.   Ma, X. Y.   Ma, Y.   Maas, F. E.   Maggiora, M.   Malik, Q. A.   Mao, H.   Mao, Y. J.   Mao, Z. P.   Messchendorp, J. G.   Min, J.   Min, T. J.   Mitchell, R. E.   Mo, X. H.   Morales, C. Morales   Motzko, C.   Muchnoi, N. Yu.   Nefedov, Y.   Nicholson, C.   Nikolaev, I. B.   Ning, Z.   Olsen, S. L.   Ouyang, Q.   Pacetti, S.   Park, J. W.   Pelizaeus, M.   Peng, H. P.   Peters, K.   Ping, J. L.   Ping, R. G.   Poling, R.   Prencipe, E.   Pun, C. S. J.   Qi, M.   Qian, S.   Qiao, C. F.   Qin, X. S.   Qin, Y.   Qin, Z. H.   Qiu, J. F.   Rashid, K. H.   Rong, G.   Ruan, X. D.   Sarantsev, A.   Schaefer, B. D.   Schulze, J.   Shao, M.   Shen, C. P.   Shen, X. Y.   Sheng, H. Y.   Shepherd, M. R.   Song, X. Y.   Spataro, S.   Spruck, B.   Sun, D. H.   Sun, G. X.   Sun, J. F.   Sun, S. S.   Sun, X. D.   Sun, Y. J.   Sun, Y. Z.   Sun, Z. J.   Sun, Z. T.   Tang, C. J.   Tang, X.   Thorndike, E. H.   Tian, H. L.   Toth, D.   Ullrich, M.   Varner, G. S.   Wang, B.   Wang, B. Q.   Wang, K.   Wang, L. L.   Wang, L. S.   Wang, M.   Wang, P.   Wang, P. L.   Wang, Q.   Wang, Q. J.   Wang, S. G.   Wang, X. F.   Wang, X. L.   Wang, Y. D.   Wang, Y. F.   Wang, Y. Q.   Wang, Z.   Wang, Z. G.   Wang, Z. Y.   Wei, D. H.   Weidenkaff, P.   Wen, Q. G.   Wen, S. P.   Werner, M.   Wiedner, U.   Wu, L. H.   Wu, N.   Wu, S. X.   Wu, W.   Wu, Z.   Xia, L. G.   Xiao, Z. J.   Xie, Y. G.   Xiu, Q. L.   Xu, G. F.   Xu, G. M.   Xu, H.   Xu, Q. J.   Xu, X. P.   Xu, Y.   Xu, Z. R.   Xue, F.   Xue, Z.   Yan, L.   Yan, W. B.   Yan, Y. H.   Yang, H. X.   Yang, T.   Yang, Y.   Yang, Y. X.   Ye, H.   Ye, M.   Ye, M. H.   Yu, B. X.   Yu, C. X.   Yu, J. S.   Yu, S. P.   Yuan, C. Z.   Yuan, W. L.   Yuan, Y.   Zafar, A. A.   Zallo, A.   Zeng, Y.   Zhang, B. X.   Zhang, B. Y.   Zhang, C. C.   Zhang, D. H.   Zhang, H. H.   Zhang, H. Y.   Zhang, J.   Zhang, J. G.   Zhang, J. Q.   Zhang, J. W.   Zhang, J. Y.   Zhang, J. Z.   Zhang, L.   Zhang, S. H.   Zhang, T. R.   Zhang, X. J.   Zhang, X. Y.   Zhang, Y.   Zhang, Y. H.   Zhang, Y. S.   Zhang, Z. P.   Zhang, Z. Y.   Zhao, G.   Zhao, H. S.   Zhao, J. W.   Zhao, K. X.   Zhao, Lei   Zhao, Ling   Zhao, M. G.   Zhao, Q.   Zhao, S. J.   Zhao, T. C.   Zhao, X. H.   Zhao, Y. B.   Zhao, Z. G.   Zhemchugov, A.   Zheng, J. P.   Zheng, Y. H.   Zheng, Z. P.   Zhong, B.   Zhong, J.   Zhou, L.   Zhou, X. K.   Zhou, X. R.   Zhu, C.   Zhu, K.   Zhu, K. J.   Zhu, S. H.   Zhu, X. L.   Zhu, X. W.   Zhu, Y. M.   Zhu, Y. S.   Zhu, Z. A.   Zhuang, J.   Zou, B. S.   Zou, J. H.   Zuo, J. X.  

    The number of J/psi events collected with the BESIII detector at the BEPC II from June 12 to July 28, 2009 is determined to be (225.3 +/- 2.8) x 10(6) using J/psi -> inclusive events, where the uncertainty is the systematic error and the statistical one is negligible.
    Download Collect
1 2 3 4 5 6 7 8 9 10

Contact

If you have any feedback, Please follow the official account to submit feedback.

Turn on your phone and scan

Submit Feedback