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63 results on '"Yang, H.B."'

57. Investigation on substrates of MmNi5-based alloy electrodes for high power applications

Author

Yang, H.B., Fukunaga, H., Ozaki, T., Iwaki, T., Tanase, S., and Sakai, T.

Subjects
*ELECTRODES, *NICKEL sulfide, *POROSITY, *DENSITY
Abstract

A new substrate (quasi-3D) combined with both three-dimensional (3D) and two-dimensional (2D) networks for MmNi5-based alloy electrodes was developed. The substrate effect on electrode packing density, porosity, loading capacity, electrode thickness, α (=Ws (substrate weight)/We (electrode weight)) and rate capability has been investigated to compare with conventional foamed nickel (3D) and punching metal (2D). The results showed that thin electrodes with punching metal substrates had better rate capability than those with foamed nickel substrates, while both kinds of the substrates had low packing density. Further results indicated that under the condition of the similar electrode thickness, the electrode using the new developed (quasi-3D) substrate showed better performance than those with punching metal and foamed nickel substrates, and could simultaneously keep high packing density and rate capability. It is suggested that this new developed substrate is more suitable for high power applications in nickel/metal hydride batteries. [Copyright &y& Elsevier]

Published
2004
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59. Electrochemical properties of the Zr(V0.4Ni0.6)2.4hydrogen storage alloy electrode

Author

Gao, X.P., Zhang, W., Yang, H.B., Song, D.Y., Zhang, Y.S., Zhou, Z.X., and Shen, P.W.

Abstract

In order to improve the electrocatalytic activity, hydrogen adsorption performance and activation behaviour of the Zr(V0.4Ni0.6)2.4alloy electrode, the alloy powder surface was modified by HF acid solution treatment. It was found that the alloy surface was transformed from a Zr-rich layer to a Ni-rich layer after the treatment and the electrocatalytic activity, hydrogen adsorption performance and activation behaviour of the alloy electrodes were significantly improved. An electrode reaction mechanism on the alloy surface (i.e. the mechanism of nickel-catalysis, hydrogen adsorption and hydrogen-transference) has been suggested. The Ni sites on the surface are not only the electrocatalytic reaction centre but also the hydrogen adsorption centre. In addition, the impedance spectra were fitted to an equivalent circuit using a non-linear, least squares fitting program.

Published
1996
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60. Bacterial density of Helicobacter pylori predicts the success of triple therapy in bleeding duodenal ulcer

Author

Sheu, B.S., Yang, H.B., Su, I.J., Shiesh, S.C., Chi, C.H., and Lin, X.Z.

Abstract

Background: We studied whether different initial bacterial densities of Helicobacter pylori would alter the eradication rate of H. pylori by triple therapy (amoxicillin 500 mg t.i.d. and metronidazole 500 mg t.i.d. for 14 days; bismuth subcitrate 120 mg t.i.d. for 28 days) in patients with duodenal ulcer bleeding. Method: One hundred thirty-six cases with duodenal ulcer bleeding and H. pylori infection (proved by rapid urease test and histology during emergency endoscopy) were studied. One hundred twenty-seven of these patients completed a course of triple therapy. In each case, anti-H. pylori IgG titer, gastric biopsies for H. pylori density (score 1 to 5), and evaluation of severity of gastritis were collected at the first endoscopy and 1 month after completion of the triple therapy. Results: The ulcer healing rate was 84.3% (107 of 127) at the time of the second evaluation. The eradication rate of H. pylori was 76.4% (97 of 127). Eradication for H. pylori failed in 30 cases. In these eradication failure cases, initial serologic titer and density of H. pylori were higher than those of eradication success cases. The eradication rate of H. pylori decreased as the initial density of H. pylori increased (density of H. pylori: 1, 88.3%; 2, 83.8%; 3, 74.2%; 4, 68%; 5, 50%). At the second evaluation, the serologic titer was lower and continued to decline in eradication success cases whose mean residual titer ratio (100% x follow-up titer / initial titer) was lower than that of eradication failure cases (57.1% +/- 14.6% vs 107.1% +/- 24.1%, p < 0.001). The mean residual titer ratio also disclosed an upward trend as the density of H. pylori increased (density of H. pylori 1 to 5: 57.5%, 66.6%, 73.5%, 75.3%, 81.8%, respectively). Conclusions: We suggest routine gastric biopsy to detect both the presence of H. pylori and its density inasmuch as quantitative results may predict the usefulness of triple therapy. The higher the H. pylori density, the less effective triple therapy will be at successful eradication of H. pylori. (Gastrointest Endosc 1996;44:683-8.)

Published
1996
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62. Measurement of the Cosmic Ray Helium Energy Spectrum from 70 GeV to 80 TeV with the DAMPE Space Mission

Author

Fengtao Zhang, Y. F. Wang, Y. Y. Huang, Xiangpeng Guo, Jinfei Wu, D. Droz, J. N. Rao, Jinglai Duan, Yang Haibo, C. Liu, D. M. Wei, Zongye Zhang, X. Y. Ma, P. Azzarello, P. Fusco, Z. Y. Sun, Niu Xiaoyang, I. De Mitri, W. Zhang, Cihang Luo, C. Q. Feng, Yu Xing Cui, X. X. Li, M. S. Cai, Z.-Q. Shen, G. Marsella, X. L. Wang, S. Wang, F. Loparco, Guan Wen Yuan, Y. F. Wei, Jin Chang, Y. J. Zhang, Giacinto Donvito, W. X. Peng, J. L. Chen, Q. An, S. B. Liu, S. C. Wen, F. Gargano, Xiulian Pan, Y. Z. Gong, Cang Zhao, Yuqing Fan, T. S. Cui, H. T. Xu, A. De Benedittis, E. Catanzani, M. M. Salinas, Y. H. Yu, Zhao-Min Wang, Yun Long Zhang, Andrii Tykhonov, Wei Liu, Dingsong Wu, Zhenyu Zhang, Yifan Yang, G. F. Xue, Fang Fang, Pengtao Yang, M. Di Santo, R. Qiao, Yaohui Zhang, Xian Qiang Li, X. J. Bi, Chuan Yue, Min Gao, Z. Q. Xia, Shumei Wu, X. Y. Peng, M. M. Ma, Wenhan Jiang, J. Z. Wang, F. C. T. Barbato, M. Stolpovskiy, Hengchang Liu, F. Alemanno, P. Bernardini, J. J. Wei, Lihui Wu, Yujuan Liu, J. Liu, Yao Ming Liang, Z. Xu, A. Parenti, L. Feng, Yun-Zhi Zhang, A. Ruina, D. Mo, M. Y. Cui, Xin Wu, L. Silveri, Jun-jun Guo, Yu-Sa Wang, Hong Yun Zhao, W. Li, Hu-Rong Yao, Jinyuo Song, Z. Z. Xu, Z. X. Dong, Yan Fang Wang, Kun Fang, Y. Zhang, A. D'Amone, H. Su, Meng Su, A. Kotenko, Maria Ionica, Jie Kong, Shi-Jun Lei, Sheng Xia Zhang, Q. Yuan, Guangshun Huang, R. R. Fan, Peng-Xiong Ma, Xun Feng Zhao, Zhi Hui Xu, S.X. Li, A. Surdo, Yu-Xuan Zhu, X. J. Teng, Tie-Kuang Dong, W. H. Shen, Z. T. Shen, D. D'Urso, Zu-Cheng Chen, L. G. Wang, Dong Ya Guo, Xiaoyuan Huang, Y. M. Hu, F. de Palma, Hao Ting Dai, C. Perrina, Tianxiao Ma, Donghong Chen, Kai-Kai Duan, Maksym Deliyergiyev, D. Kyratzis, K. Gong, Chengrui Zhou, Mn Mazziotta, G. Z. Shang, Shuang Xue Han, J. J. Zang, Huaguang Wang, Alemanno F., An Q., Azzarello P., Barbato F.C.T., Bernardini P., Bi X.J., Cai M.S., Catanzani E., Chang J., Chen D.Y., Chen J.L., Chen Z.F., Cui M.Y., Cui T.S., Cui Y.X., Dai H.T., D'amone A., De Benedittis A., De Mitri I., De Palma F., Deliyergiyev M., Di Santo M., Dong T.K., Dong Z.X., Donvito G., Droz D., Duan J.L., Duan K.K., D'urso D., Fan R.R., Fan Y.Z., Fang K., Fang F., Feng C.Q., Feng L., Fusco P., Gao M., Gargano F., Gong K., Gong Y.Z., Guo D.Y., Guo J.H., Guo X.L., Han S.X., Hu Y.M., Huang G.S., Huang X.Y., Huang Y.Y., Ionica M., Jiang W., Kong J., Kotenko A., Kyratzis D., Lei S.J., Li S., Li W.L., Li X., Li X.Q., Liang Y.M., Liu C.M., Liu H., Liu J., Liu S.B., Liu W.Q., Liu Y., Loparco F., Luo C.N., Ma M., Ma P.X., Ma T., Ma X.Y., Marsella G., Mazziotta M.N., Mo D., Niu X.Y., Pan X., Parenti A., Peng W.X., Peng X.Y., Perrina C., Qiao R., Rao J.N., Ruina A., Salinas M.M., Shang G.Z., Shen W.H., Shen Z.Q., Shen Z.T., Silveri L., Song J.X., Stolpovskiy M., Su H., Su M., Sun Z.Y., Surdo A., Teng X.J., Tykhonov A., Wang H., Wang J.Z., Wang L.G., Wang S., Wang X.L., Wang Y., Wang Y.F., Wang Y.Z., Wang Z.M., Wei D.M., Wei J.J., Wei Y.F., Wen S.C., Wu D., Wu J., Wu L.B., Wu S.S., Wu X., Xia Z.Q., Xu H.T., Xu Z.H., Xu Z.L., Xu Z.Z., Xue G.F., Yang H.B., Yang P., Yang Y.Q., Yao H.J., Yu Y.H., Yuan G.W., Yuan Q., Yue C., Zang J.J., Zhang F., Zhang S.X., Zhang W.Z., Zhang Y., Zhang Y.J., Zhang Y.L., Zhang Y.P., Zhang Y.Q., Zhang Z., Zhang Z.Y., Zhao C., Zhao H.Y., Zhao X.F., Zhou C.Y., Zhu Y., Alemanno, F., An, Q., Azzarello, P., Barbato, F. C. T., Bernardini, P., Bi, X. J., Cai, M. S., Catanzani, E., Chang, J., Chen, D. Y., Chen, J. L., Chen, Z. F., Cui, M. Y., Cui, T. S., Cui, Y. X., Dai, H. T., D’Amone, A., De Benedittis, A., De Mitri, I., de Palma, F., Deliyergiyev, M., Di Santo, M., Dong, T. K., Dong, Z. X., Donvito, G., Droz, D., Duan, J. L., Duan, K. K., D’Urso, D., Fan, R. R., Fan, Y. Z., Fang, K., Fang, F., Feng, C. Q., Feng, L., Fusco, P., Gao, M., Gargano, F., Gong, K., Gong, Y. Z., Guo, D. Y., Guo, J. H., Guo, X. L., Han, S. X., Hu, Y. M., Huang, G. S., Huang, X. Y., Huang, Y. Y., Ionica, M., Jiang, W., Kong, J., Kotenko, A., Kyratzis, D., Lei, S. J., Li, S., Li, W. L., Li, X., Li, X. Q., Liang, Y. M., Liu, C. M., Liu, H., Liu, J., Liu, S. B., Liu, W. Q., Liu, Y., Loparco, F., Luo, C. N., Ma, M., Ma, P. X., Ma, T., Ma, X. Y., Marsella, G., Mazziotta, M. N., Mo, D., Niu, X. Y., Pan, X., Parenti, A., Peng, W. X., Peng, X. Y., Perrina, C., Qiao, R., Rao, J. N., Ruina, A., Salinas, M. M., Shang, G. Z., Shen, W. H., Shen, Z. Q., Shen, Z. T., Silveri, L., Song, J. X., Stolpovskiy, M., Su, H., Su, M., Sun, Z. Y., Surdo, A., Teng, X. J., Tykhonov, A., Wang, H., Wang, J. Z., Wang, L. G., Wang, S., Wang, X. L., Wang, Y., Wang, Y. F., Wang, Y. Z., Wang, Z. M., Wei, D. M., Wei, J. J., Wei, Y. F., Wen, S. C., Wu, D., Wu, J., Wu, L. B., Wu, S. S., Wu, X., Xia, Z. Q., Xu, H. T., Xu, Z. H., Xu, Z. L., Xu, Z. Z., Xue, G. F., Yang, H. B., Yang, P., Yang, Y. Q., Yao, H. J., Yu, Y. H., Yuan, G. W., Yuan, Q., Yue, C., Zang, J. J., Zhang, F., Zhang, S. X., Zhang, W. Z., Zhang, Y., Zhang, Y. J., Zhang, Y. L., Zhang, Y. P., Zhang, Y. Q., Zhang, Z., Zhang, Z. Y., Zhao, C., Zhao, H. Y., Zhao, X. F., Zhou, C. Y., and Zhu, Y.

Subjects
Astrophysics::High Energy Astrophysical Phenomena, Dark matter, General Physics and Astronomy, chemistry.chemical_element, FOS: Physical sciences, Cosmic ray, Space (mathematics), 01 natural sciences, 7. Clean energy, Cosmic ray, helium, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, Energy spectrum, cosmic rays, dark matter, space, crystals, 010306 general physics, Helium, Physics, High Energy Astrophysical Phenomena (astro-ph.HE), COSMIC cancer database, detector, Settore FIS/01 - Fisica Sperimentale, calibration, chemistry, Particle, Astrophysics - High Energy Astrophysical Phenomena, Nucleon, performance
Abstract

The measurement of the energy spectrum of cosmic ray helium nuclei from 70 GeV to 80 TeV using 4.5 years of data recorded by the DArk Matter Particle Explorer (DAMPE) is reported in this work. A hardening of the spectrum is observed at an energy of about 1.3 TeV, similar to previous observations. In addition, a spectral softening at about 34 TeV is revealed for the first time with large statistics and well controlled systematic uncertainties, with an overall significance of $4.3\sigma$. The DAMPE spectral measurements of both cosmic protons and helium nuclei suggest a particle charge dependent softening energy, although with current uncertainties a dependence on the number of nucleons cannot be ruled out., Comment: 11 pages, 13 figures, published in Phys. Rev. Lett. Add one more digit for first three columns in Table S2

Published
2021

63. Synthesis of Ti3AlC2/Al2O3 nanopowders by mechano-chemical reaction

Author

Zhu, J.F., Qi, G.Q., Wang, F., and Yang, H.B.

Subjects
*TITANIUM compounds, *INORGANIC synthesis, *MECHANICAL chemistry, *CHEMICAL reactions, *POWDERS, *NANOSTRUCTURED materials, *HEAT treatment, *TEMPERATURE effect
Abstract

Abstract: Ti3AlC2/Al2O3 nanopowders were synthesized by the combination of mechanically-induce self-propagating reaction (MSR) of Ti, C, Al and TiO2 powder mixtures and subsequently heat treatment. Effects of high energy milling and heat treatment temperatures on the phase transformation were investigated in detail. X-ray diffraction (XRD) was used to characterize the powders of milled and annealed, respectively. The morphology and microstructure of as fabricated products were also studied by scanning electron microscopy (SEM) equipped with energy-dispersive spectroscopy (EDS). Results show that TiC, Ti x Al y and Al2O3 transitional phases were formed when the initial powder mixtures were milled for 24h. The desired Ti3AlC2/Al2O3 nanopowders with high purity were obtained when annealed the as-milled powders at 1100°C. SEM image confirmed that the as fabricated Ti3AlC2/Al2O3 particles has nanocrystalline layered structural matrix of Ti3AlC2, and the second phase of nanosized Al2O3 disperses uniformly in the Ti3AlC2 matrix. [ABSTRACT FROM AUTHOR]

Published
2010
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