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4,684 results on '"Peng Fang"'

353. Public Auditing of Log Integrity for Cloud Storage Systems via Blockchain

Author

Wang, Jia, Peng, Fang, Tian, Hui, Chen, Wenqi, Lu, Jing, Akan, Ozgur, Editorial Board Member, Bellavista, Paolo, Editorial Board Member, Cao, Jiannong, Editorial Board Member, Coulson, Geoffrey, Editorial Board Member, Dressler, Falko, Editorial Board Member, Ferrari, Domenico, Editorial Board Member, Gerla, Mario, Editorial Board Member, Kobayashi, Hisashi, Editorial Board Member, Palazzo, Sergio, Editorial Board Member, Sahni, Sartaj, Editorial Board Member, Shen, Xuemin (Sherman), Editorial Board Member, Stan, Mircea, Editorial Board Member, Xiaohua, Jia, Editorial Board Member, Zomaya, Albert Y., Editorial Board Member, Li, Jin, editor, Liu, Zheli, editor, and Peng, Hao, editor

Published
2019
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354. Evaluation of sEMG-Based Feature Extraction and Effective Classification Method for Gait Phase Detection

Author

Peng, Fang, Peng, Wei, Zhang, Cheng, Barbosa, Simone Diniz Junqueira, Editorial Board Member, Filipe, Joaquim, Editorial Board Member, Ghosh, Ashish, Editorial Board Member, Kotenko, Igor, Editorial Board Member, Yuan, Junsong, Editorial Board Member, Zhou, Lizhu, Editorial Board Member, Sun, Fuchun, editor, Liu, Huaping, editor, and Hu, Dewen, editor

Published
2019
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363. Nephrectomy and high-salt diet inducing pulmonary hypertension and kidney damage by increasing Ang II concentration in rats

Author

Jiang, Qian, primary, Yang, Qifeng, additional, Zhang, Chenting, additional, Hou, Chi, additional, Hong, Wei, additional, Du, Min, additional, Shan, Xiaoqian, additional, Li, Xuanyi, additional, Zhou, Dansha, additional, Wen, Dongmei, additional, Xiong, Yuanhui, additional, Yang, Kai, additional, Lin, Ziying, additional, Song, Jingjing, additional, Mo, Zhanjie, additional, Feng, Huazhuo, additional, Xing, Yue, additional, Fu, Xin, additional, Liu, Chunli, additional, Peng, Fang, additional, Li, Bing, additional, Lu, Wenju, additional, Yuan, Jason X.-J., additional, Wang, Jian, additional, and Chen, Yuqin, additional

Published
2024
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388. Phase transformation and fluorescent enhancement of ErF3 at high pressure

Author

Li, Wentao, Ren, Xiangting, Huang, Yanwei, Yu, Zhenhai, Mi, Zhongying, Tamura, Nobumichi, Li, Xiaodong, Peng, Fang, and Wang, Lin

Subjects
Inorganic Chemistry, Chemical Sciences, Physical Sciences, Rare-earth trifluorides, Structure and fluorescence, Phase transitions and enhancement of fluorescence, High pressure, Condensed Matter Physics, Materials Engineering, Nanotechnology, Applied Physics, Macromolecular and materials chemistry, Condensed matter physics
Abstract

Pressure-induced phase transformation and fluorescent properties of ErF3 were investigated here using in-situ synchrotron X-ray diffraction and photoluminescence up to 32.1 GPa at room temperature. Results showed that ErF3 underwent a reversible pressure-induced phase transition from the β-YF3-type to the fluocerite LaF3-type at 9.8 GPa. The bulk moduli B0 for low- and high-pressure phases were determined to be 130 and 208 GPa, respectively. Photoluminescencent studies showed that new emission lines belonging to the transition of 2H11/2→4I15/2, 4S3/2→4I15/2, and 4F9/2→4I15/2 appeared during phase transition, suggesting pressure-induced electronic band splitting. Remarkably, significant pressure-induced enhancement of photoluminescence was observed, which was attributed to lattice distortion of the material under high pressure.

Published
2016

395. Photosphere emission in the X-Ray Flares of Swift Gamma-Ray Bursts and Implications for the Fireball Properties

Author

Peng, Fang-Kun, Liang, En-Wei, Wang, Xiang-Yu, Hou, Shu-Jin, Xi, Shao-Qiang, Lu, Rui-Jing, Zhang, Jin, and Zhang, Bing

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

X-ray flares of gamma-ray bursts (GRBs) are usually observed in the soft X-ray range and the spectral coverage is limited. In this paper, we present an analysis of 32 GRB X-ray flares that are simultaneously observed by both BAT and XRT on board the Swift mission, so a joint spectral analysis with a wider spectral coverage is possible. Our results show that the joint spectra of 19 flares are fitted with the absorbed single power-law or the Band function models. More interestingly, the joint spectra of the other 13 X-ray flares are fitted with the absorbed single power-law model plus a black body (BB) component. Phenomenally, the observed spectra of these 13 flares are analogous to several GRBs with a thermal component, but only with a much lower temperature of $kT=1\sim 3$ keV. Assuming that the thermal emission is the photosphere emission of the GRB fireball, we derive the fireball properties of the 13 flares that have redshift measurements, such as the bulk Lorentz factor $\Gamma_{\rm ph}$ of the outflow. The derived $\Gamma_{\rm ph}$ range from $50$ to $150$ and a relation of $\Gamma_{\rm ph}$ to the thermal emission luminosity is found. It is consistent with the $\Gamma_0-L_{\rm iso}$ relation that are derived for the prompt gamma-ray emission. We discuss the physical implications of these results within the content of jet composition and radiation mechanism of GRBs and X-ray flares., Comment: 31 pages, 8 figures, and 4 tables. Accepted for publication in ApJ

Published
2014
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396. Internal Energy Dissipation of Gamma-Ray Bursts Observed with Swift: Precursors, Prompt Gamma-rays, Extended emission and Late X-ray Flares

Author

Hu, You-Dong, Liang, En-Wei, Xi, Shao-Qiang, Peng, Fang-Kun, Lu, Rui-Jing, LV, Lian-Zhong, and Zhang, Bing

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

We jointly analyze the gamma-ray burst (GRB) data observed with BAT and XRT on board the Swift mission to present a global view on the internal energy dissipation processes in GRBs, including precursors, prompt gamma-ray emission, extended soft gamma-ray emission, and late X-ray flares. The Bayesian block method is utilized to analyze the BAT lightcurves to identify various emission episodes. Our results suggest that these emission components likely share a same physical origin, which is repeated activation of the GRB central engine. What we observe in the gamma-ray band may be the tip-of-iceberg of more extended underlying activities. The precursor emission, which is detected in about 10% of {\em Swift} GRBs, is preferably detected in those GRBs that have a massive star core-collapse origin. The soft extended emission (EE) tail, on the other hand, is preferably detected in those GRBs that have a compact star merger origin. Bright X-ray emission is detected during the BAT quiescent phases prior to subsequent gamma-ray peaks, implying that X-ray emission may be detectable prior the BAT trigger time. Future GRB alert instruments with soft X-ray capability would be essential to reveal the early stage of GRB central engine activities, sheding light into jet composition and jet launching mechanism in GRBs., Comment: 15 pages, including 15 figures and 2 tables. Accepted for publication in ApJ

Published
2014
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