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3,013 results on '"Cheng, Kui"'

201. Transverse force on a moving vortex with the acoustic geometry

Author

Zhang, Peng-ming, Cao, Li-ming, Duan, Yi-shi, and Zhong, Cheng-kui

Subjects
High Energy Physics - Theory
Abstract

We consider the transverse force on a moving vortex with the acoustic metric using the $\phi $-mapping topological current theory. In the frame of effective spacetime geometry the vortex appear naturally by virtue of the vortex tensor in the Lorentz spacetime and we show that it is just the vortex derived with the order parameter in the condensed matter. With the usual Lagrangian we obtain the equation of motion for the vortex. At last, we show that the transverse force on the moving vortex in our equation is just the usual Magnus force in a simple model., Comment: 11 pages, no figure

Published
2005
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227. Burst search method based on likelihood ratio in Poisson statistics

Author

Ce Cai, Shao-Lin Xiong, Wang-Chen Xue, Yi Zhao, Shuo Xiao, Qi-Bin Yi, Zhi-Wei Guo, Jia-Cong Liu, Yan-Qiu Zhang, Chao Zheng, Sheng-Lun Xie, Yan-Qi Du, Xiao-Yun Zhao, Cheng-Kui Li, Ping Wang, Wen-Xi Peng, Shi-Jie Zheng, Li-Ming Song, Xin-Qiao Li, Xiang-Yang Wen, and Fan Zhang

Subjects
High Energy Astrophysical Phenomena (astro-ph.HE), Space and Planetary Science, FOS: Physical sciences, Astronomy and Astrophysics, Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Instrumentation and Methods for Astrophysics, Instrumentation and Methods for Astrophysics (astro-ph.IM)
Abstract

Searching for X-ray and gamma-ray bursts, including Gamma-ray bursts (GRBs), Soft Gamma-ray Repeaters (SGRs) and high energy transients associated with Gravitational wave (GW) events or Fast radio bursts (FRBs), is of great importance in the multi-messenger and multi-wavelength era. Although a coherent search based on the likelihood ratio and Gaussian statistics has been established and utilized in many studies, this Gaussian-based method could be problematic for weak and short bursts which usually have very few counts. To deal with all bursts including weak ones, here we propose the coherent search in Poisson statistics. We studied the difference between Poisson-based and Gaussian-based search methods by Monte Carlo simulations, and find that the Poisson-based search method has advantages compared to the Gaussian case especially for weak bursts. Our results show that, for very weak bursts with very low number of counts, the Poisson-based search can provide higher significance than the Gaussian-based search, and its likelihood ratio (for background fluctuation) still generally follows the chi2 distribution, making the significance estimation of searched bursts very convenient. Thus, we suggest that the coherent search based on Poisson likelihood ratio is more appropriate in the search for generic transients including very weak ones., Comment: 10 pages, 10 figures

Published
2022

228. Revisit the periodicity of SGR J1935+2154 bursts with updated sample

Author

Sheng-Lun Xie, Ce Cai, Shao-Lin Xiong, Yun-Wei Yu, Yan-Qiu Zhang, Lin Lin, Zhen Zhang, Wang-Chen Xue, Jia-Cong Liu, Yi Zhao, Shuo Xiao, Chao Zheng, Qi-Bin Yi, Peng Zhang, Ping Wang, Rui Qiao, Wen-Xi Peng, Yue Huang, Xiang Ma, Xiao-Yun Zhao, Xiao-Bo Li, Shi-Jie Zheng, Ming-Yu Ge, Cheng-Kui Li, Xin-Qiao Li, Xiang-Yang Wen, Fan Zhang, Li-Ming Song, Shuang-Nan Zhang, Zhi-Wei Guo, Xiao-Lu Zhang, Guo-Ying Zhao, and Chao-Yang Li

Subjects
High Energy Astrophysical Phenomena (astro-ph.HE), Space and Planetary Science, FOS: Physical sciences, Astronomy and Astrophysics, Astrophysics - High Energy Astrophysical Phenomena
Abstract

Since FRB 200428 has been found to be associated with an X-ray burst from the Galactic magnetar SGR J1935+2154, it is interesting to explore whether the magnetar bursts also follow the similar active periodic behaviour as some repeating FRBs. Previous studies show that there is possible period of about 230 days in SGR J1935+2154 bursts. Here, we collected an updated burst sample from SGR J1935+2154, including all bursts reported by Fermi/GBM and GECAM till 2022 January. We also developed a targeted search pipeline to reveal more bursts from SGR J1935+2154 in the Fermi/GBM data from 2008 August to 2014 December (i.e. before the first burst detected by Swift/BAT). With this burst sample, we re-analysed the possible periodicity of SGR J1935+2154 bursts using the Period Folding and Lomb–Scargle Periodogram methods. Our results show that the periodicity ∼238 days reported in literature is probably fake and the observation effects may introduce false periods (i.e. 55 days) according to simulation tests. We find that, for the current burst sample, the most probable period is 126.88 ± 2.05 days, which could be interpreted as the precession of the magnetar. However, we note that the whole burst history is very complicated and difficult to be perfectly accommodated with any period reported thus far, therefore more monitoring observations of SGR J1935+2154 are required to test any periodicity hypothesis.

Published
2022

230. Loss of PTPMT1 limits mitochondrial utilization of carbohydrates and leads to muscle atrophy and heart failure

Author

Zheng, Hong, primary, Li, Qianjin, additional, Li, Shanhu, additional, Li, Zhiguo, additional, Brotto, Marco, additional, Weiss, Daiana, additional, Prosdocimo, Domenick, additional, Xu, Chunhui, additional, Reddy, Ashruth, additional, Puchowicz, Michelle, additional, Zhao, Xinyang, additional, Weitzmann, M. Neale, additional, Jain, Mukesh K., additional, and Qu, Cheng-Kui, additional

Published
2023
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232. Pulsar and Magnetar Navigation with Fermi/GBM and GECAM

Author

Luo, Xi-Hong, primary, Xiao, Shuo, additional, Zheng, Shi-Jie, additional, Ge, Ming-Yu, additional, Tuo, You-Li, additional, Xiong, Shao-Lin, additional, Zhang, Shuang-Nan, additional, Lu, Fang-Jun, additional, Huang, Yue, additional, Yang, Cheng, additional, Zhi, Qi-Jun, additional, Song, Li-Ming, additional, Peng, Wen-Xi, additional, Wen, Xiang-Yang, additional, Li, Xin-Qiao, additional, An, Zheng-Hua, additional, Wang, Jin, additional, Wang, Ping, additional, Cai, Ce, additional, Li, Cheng-Kui, additional, Li, Xiao-Bo, additional, Zhang, Fan, additional, Dong, Ai-Jun, additional, Xie, Wei, additional, Feng, Jian-Chao, additional, Ma, Qing-Bo, additional, Wang De, Hua, additional, Shang, Lun-Hua, additional, Xu, Xin, additional, Zhang, Meng-Xuan, additional, Dong, Zi-Ping, additional, and Dang, Shi-Jun, additional

Published
2023
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237. Data from Pathobiological Pseudohypoxia as a Putative Mechanism Underlying Myelodysplastic Syndromes

Author

Hayashi, Yoshihiro, primary, Zhang, Yue, primary, Yokota, Asumi, primary, Yan, Xiaomei, primary, Liu, Jinqin, primary, Choi, Kwangmin, primary, Li, Bing, primary, Sashida, Goro, primary, Peng, Yanyan, primary, Xu, Zefeng, primary, Huang, Rui, primary, Zhang, Lulu, primary, Freudiger, George M., primary, Wang, Jingya, primary, Dong, Yunzhu, primary, Zhou, Yile, primary, Wang, Jieyu, primary, Wu, Lingyun, primary, Bu, Jiachen, primary, Chen, Aili, primary, Zhao, Xinghui, primary, Sun, Xiujuan, primary, Chetal, Kashish, primary, Olsson, Andre, primary, Watanabe, Miki, primary, Romick-Rosendale, Lindsey E., primary, Harada, Hironori, primary, Shih, Lee-Yung, primary, Tse, William, primary, Bridges, James P., primary, Caligiuri, Michael A., primary, Huang, Taosheng, primary, Zheng, Yi, primary, Witte, David P., primary, Wang, Qian-fei, primary, Qu, Cheng-Kui, primary, Salomonis, Nathan, primary, Grimes, H. Leighton, primary, Nimer, Stephen D., primary, Xiao, Zhijian, primary, and Huang, Gang, primary

Published
2023
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241. Supplementary Methods from Pathobiological Pseudohypoxia as a Putative Mechanism Underlying Myelodysplastic Syndromes

Author

Hayashi, Yoshihiro, primary, Zhang, Yue, primary, Yokota, Asumi, primary, Yan, Xiaomei, primary, Liu, Jinqin, primary, Choi, Kwangmin, primary, Li, Bing, primary, Sashida, Goro, primary, Peng, Yanyan, primary, Xu, Zefeng, primary, Huang, Rui, primary, Zhang, Lulu, primary, Freudiger, George M., primary, Wang, Jingya, primary, Dong, Yunzhu, primary, Zhou, Yile, primary, Wang, Jieyu, primary, Wu, Lingyun, primary, Bu, Jiachen, primary, Chen, Aili, primary, Zhao, Xinghui, primary, Sun, Xiujuan, primary, Chetal, Kashish, primary, Olsson, Andre, primary, Watanabe, Miki, primary, Romick-Rosendale, Lindsey E., primary, Harada, Hironori, primary, Shih, Lee-Yung, primary, Tse, William, primary, Bridges, James P., primary, Caligiuri, Michael A., primary, Huang, Taosheng, primary, Zheng, Yi, primary, Witte, David P., primary, Wang, Qian-fei, primary, Qu, Cheng-Kui, primary, Salomonis, Nathan, primary, Grimes, H. Leighton, primary, Nimer, Stephen D., primary, Xiao, Zhijian, primary, and Huang, Gang, primary

Published
2023
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243. Supplementary Table S2 from Pathobiological Pseudohypoxia as a Putative Mechanism Underlying Myelodysplastic Syndromes

Author

Hayashi, Yoshihiro, primary, Zhang, Yue, primary, Yokota, Asumi, primary, Yan, Xiaomei, primary, Liu, Jinqin, primary, Choi, Kwangmin, primary, Li, Bing, primary, Sashida, Goro, primary, Peng, Yanyan, primary, Xu, Zefeng, primary, Huang, Rui, primary, Zhang, Lulu, primary, Freudiger, George M., primary, Wang, Jingya, primary, Dong, Yunzhu, primary, Zhou, Yile, primary, Wang, Jieyu, primary, Wu, Lingyun, primary, Bu, Jiachen, primary, Chen, Aili, primary, Zhao, Xinghui, primary, Sun, Xiujuan, primary, Chetal, Kashish, primary, Olsson, Andre, primary, Watanabe, Miki, primary, Romick-Rosendale, Lindsey E., primary, Harada, Hironori, primary, Shih, Lee-Yung, primary, Tse, William, primary, Bridges, James P., primary, Caligiuri, Michael A., primary, Huang, Taosheng, primary, Zheng, Yi, primary, Witte, David P., primary, Wang, Qian-fei, primary, Qu, Cheng-Kui, primary, Salomonis, Nathan, primary, Grimes, H. Leighton, primary, Nimer, Stephen D., primary, Xiao, Zhijian, primary, and Huang, Gang, primary

Published
2023
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245. Supplementary Figure S1-13 and Supplementary Table S1,3 from Pathobiological Pseudohypoxia as a Putative Mechanism Underlying Myelodysplastic Syndromes

Author

Hayashi, Yoshihiro, primary, Zhang, Yue, primary, Yokota, Asumi, primary, Yan, Xiaomei, primary, Liu, Jinqin, primary, Choi, Kwangmin, primary, Li, Bing, primary, Sashida, Goro, primary, Peng, Yanyan, primary, Xu, Zefeng, primary, Huang, Rui, primary, Zhang, Lulu, primary, Freudiger, George M., primary, Wang, Jingya, primary, Dong, Yunzhu, primary, Zhou, Yile, primary, Wang, Jieyu, primary, Wu, Lingyun, primary, Bu, Jiachen, primary, Chen, Aili, primary, Zhao, Xinghui, primary, Sun, Xiujuan, primary, Chetal, Kashish, primary, Olsson, Andre, primary, Watanabe, Miki, primary, Romick-Rosendale, Lindsey E., primary, Harada, Hironori, primary, Shih, Lee-Yung, primary, Tse, William, primary, Bridges, James P., primary, Caligiuri, Michael A., primary, Huang, Taosheng, primary, Zheng, Yi, primary, Witte, David P., primary, Wang, Qian-fei, primary, Qu, Cheng-Kui, primary, Salomonis, Nathan, primary, Grimes, H. Leighton, primary, Nimer, Stephen D., primary, Xiao, Zhijian, primary, and Huang, Gang, primary

Published
2023
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247. Enhanced Luminescence of Eu-Doped TiO2 Nanodots

Author

Luo, Ming, Cheng, Kui, Weng, Wenjian, Song, Chenlu, Du, Piyi, Shen, Ge, Xu, Gang, and Han, Gaorong

Abstract

Abstract: Monodisperse and spherical Eu-doped TiO2 nanodots were prepared on substrate by phase-separation-induced self-assembly. The average diameters of the nanodots can be 50 and 70 nm by changing the preparation condition. The calcined nanodots consist of an amorphous TiO2 matrix with Eu3+ ions highly dispersed in it. The Eu-doped TiO2 nanodots exhibit intense luminescence due to effective energy transfer from amorphous TiO2 matrix to Eu3+ ions. The luminescence intensity is about 12.5 times of that of Eu-doped TiO2 film and the luminescence lifetime can be as long as 960 μs.

Published
2024
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