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31篇 您的检索式:作者名="HU YUNSHENG"
    题名 作者 年代 出处 被引量
1Comparison of mixing layer height inversion algorithms using lidar and a pollution case study in Baoding, China显示文摘Beijing–Tianjin–Hebei area is suffering from atmospheric pollution from a long time. The understanding of the air pollution mechanism is of great importance for officials to design strategies for the environmental governance. Mixing layer height(MLH) is a key factor influencing the diffusion of air pollutants. It plays an important role on the evolution of heavy pollution events. Light detection and ranging(lidar), is an effective remote-sensing tool, which can retrieve high spatial and temporal evolution process within mixing layer(ML), especially the variation of MLH. There are many methods to retrieve MLH, but each method has its own applicable limitations. The Mie-lidar data in Beijing was firstly used to compare three different algorithms which are widely used under different pollution levels.We find that the multi-layer structure near surface may cause errors in the detection of mixing layer. The MLH retrieved based on image edge detection was better than another two methods especially under heavy polluted episode. Then we applied this method to investigate the evolution of the mixing layer height during a pollution episode in December2016. MLH at Gucheng county showed the positive correlation with the concentration of particulate matters during the start of this pollution episode. The elevated pollution level in Gucheng was not associated with MLH's decrease, and the significantly increased particulate matters raised the boundary layer, which trapped the pollutants near the surface.Xiangguang Ji Cheng Liu Zhouqing Xie Qihou Hu Yunsheng Dong Guangqiang Fan Tianshu Zhang Chengzhi Xing Zhuang Wang Zeeshan Javed Jianguo Liu 2019Journal of Environmental Sciences2019,31,5:5
2Dual functional transparent film for proximity and pressure sensing显示文摘在过去几年,触觉的察觉到的技术的快速的开发显著地作出贡献到直觉的触摸控制和聪明的人机器的相互作用的实现。除了察觉到的物理触觉或压力,最近作为互补功能察觉到能扩大普通单个功能的触觉的传感器的察觉模式。在这个工作,我们在场一透明,矩阵结构集成在一台设备察觉到的最近和压力的能力的双功能的电容的传感器,并且电容的象素的孤立的反应提供的优秀空间分辨率使我们能认识到与快反应,高稳定性和高可逆性接近对象和装载压力的精确地点鉴定。Bo Zhang Zemin Xiang Siwei Zhu Qiyi Hu Yuanzhi Cao Junwen Zhong Qize Zhong Bo Wang Yunsheng Fang Bin Hu Jun Zhou Zhonglin wang 2014Nano Research2014,7,10:4
3Luminescence modification of Eu3+-activated molybdate phosphor prepared via co-precipitation显示文摘Eu-activated CaMoO4 phosphors were co-precipitated in an aqueous solution, and NH3·H2O, NH4HCO3 and (NH2)2CO as pre-cipitating aid agents were compared based on the morphology and particle size distribution of the phosphor samples. Sm3+ as sensitizer ion was investigated on the luminescence of CaMoO4:Eu, and it could strengthen the 406 nm absorption of this phosphor. At last, the scheelite CaMoO4:Eu and wolframite ZnMoO4:Eu were selected to compare their host absorption. The result showed that the scheelite molybdate host exhibited stronger UV absorption than wolframite one.ZHAO Chunlei HU Yunsheng ZHUANG Weidong HUANG Xiaowei HE Tao 2009Journal of Rare Earths2009,27,5:4
4Preparation and luminescent properties of (Ca 1- x ,Sr x )S:Eu 2+ red-emitting phosphor for white LED显示文摘Yunsheng Hu Weidong Zhuang Hongqi Ye Shusheng Zhang Ying Fang Xiaowei Huang 2004Journal of Luminescence2004,,3:2
5Carbon interstitial defects causing emission red shift in YAG:Ce phosphor:First-principles calculation显示文摘Y_3 Al_5 O_(12):Ce3+ is the most famous phosphor material due to its excellent photolumincent properties.Here,through first-principles calculation,the effect of carbon interstitial defects on Y_3 Al_5 O_(12):Ce3+phosphor was investigated. It is found that the carbon interstitials tend to occupy the next-nearest sites of Ce^(3+) ion in Y_3 Al_5 O_(12):Ce3+ lattice. Specially,these interstitial defects can shorten the Ce3+-O^(2-) bond length, leading to a larger crystal field splitting of 5 d orbital of the Ce^(3+) atom and bigger 5 d centroid shift.These two factors cause the emission spectrum of Y_3 Al_5 O_(12)(C):Ce^(3+) red shift compared with that of Y_3 Al_5 O_(12):Ce3+. Moreover, with our comparison experiment, we find that the Y_3 Al_5 O_(12)(C):Ce3+ has an obvious red shift compared with that of Y_3 Al_5 O_(12):Ce^(3+) system,which is in accord with our first principles calculation. Our work systematically investigates the impact of the carbon interstitial defect on Y_3 Al_5 O_(12):Ce^(3+),and provides a new route to tune the emission spectrum in Y_3 Al_5 O_(12):Ce^(3+).Yaling Zheng Weidong Zhuang Xianran Xing Ronghui Liu Yanfeng Li Yuanhong Liu Yunsheng Hu Xiaoxia Chen Lei Chen Xiaole Ma 2018Journal of Rare Earths2018,36,12:1
6Band-gap-tailored random laser显示文摘A band-gap-tailored random laser with a wide tunable range and low threshold through infrared radiation is demonstrated. When fluorescent dyes are doped into the liquid crystal and heavily doped chiral agent system,we demonstrate a wavelength tuning random laser instead of a side-band laser, which is caused by the combined effect of multi-scattering of liquid crystal(LC) and band-gap control. Through rotating the infrared absorbing material on the side of the LC cell, an adjustable range for random lasing of 80 nm by infrared light irradiation was observed.HONGBO Lu JIAN XING CHENG WEI JIANGYING XIA JUNQING SHA YUNSHENG DING GUOBING ZHANG KANG XIE LONGZHEN QIU ZHIJIA Hu 2018Photonics Research2018,6,5:1
7A novel red phosphor for white light emitting diodes显示文摘Hu Yunsheng Zhuang Weidong Ye Hongqi 2005Journal of Alloys and Compounds2005,390,12:1
8A Novel Red Phosphor for White Light Emitting Diodes 显示文摘Yunsheng Hu Weidong Zhuang 2005Alloys Compd2005,390,:1
9A novel red phosphor for white light emitting diodes显示文摘HU Yunsheng ZHUANG Weidong YE Hongqi 2005Alloys and Compounds2005,390,1:1
10A novel red phosphor for white light emitting diodes显示文摘Yunsheng Hu Weidong Zhuang Hongqi Ye Donghui Wang Shusheng Zhang Xiaowei Huang 2004Journal of Alloys and Compounds2004,,1:1
11Magnetic resonance imaging characteristics of postoperative intracranial dissemination of recurrent gliomas显示文摘Ten intracranial gliomas cases, that had postoperative intracranial dissemination, underwent magnetic resonance imaging (MRI) examinations, including T1 weighted imaging, fat-suppressed T1 weighted imaging, T2 weighted imaging and fluid attenuated inversion recovery (FLAIR). Results showed that tumor metastasis had occurred via the cerebrospinal fluid, the brain white matter fibers and the surgical access site alone. On the plain MRI scans, 1/7 cases were linearly thickened with isointensity and 5/7 cases exhibited nodular foci on T1 weighted imaging; the cerebral sulci and cisterns in 2/7 cases had become shallow and five cases had nodular foci on T2 weighted imaging. FLAIR imaging revealed that the cerebral sulci and cisterns in 2/7 cases had become shallow and that six cases had affected nodular foci. The contrast-enhanced MRI scans revealed linear thickening in seven cases, nodules in seven cases, similarities to 'mould-like' signs in six cases and hydrocephalus in six cases. These findings suggested that MRI with different sequences can diagnose glioma metastasis.Linfeng Zheng Guixiang Zhang Jinglong Zhao Han Wang Kang'an Li Lin Zhang Xifu Wang Pengpeng Sun Yunsheng Hu 2011Neural Regeneration Research2011,6,33:1
12A novel red phosphor for white light emitting diodes显示文摘Hu Yunsheng Zhuang Weidong Ye Hongqi 2005Journal of Al- loys and Compounds2005,390,:1
13p21 overexpression sensitizes osteosarcoma U2OS cells to cisplatin via evoking caspase-3 and Bax/Bcl-2 cascade显示文摘Yong Ding Yucai Wang Jun Chen Yunsheng Hu Zhuo Cao Pengcheng Ren Yong Zhang 2014Tumor Biology2014,,4:1
14A novel red phosphor for white light emitting diodes显示文摘Yunsheng Hu Weidong Zhuang Hongqi Ye Donghui Wang Shusheng Zhang Xiaowei Huang 2004Journal of Alloys and Compounds2004,,1:1
15Preparation and luminescent properties of (Ca1-x Srx)S:Eu^2+ red-emitting phosphor for white LED 显示文摘HU YUNSHENG ZHUANG WE IDONG YE HONGQI 2005Lumin2005,111,3:1
16Luminescent properties of Dy 3+ ion in Ca 8 Mg(SiO 4 ) 4 Cl 2显示文摘Ying Fang Weidong Zhuang Yunsheng Hu Xinyu Ye Xiaowei Huang 2007Journal of Alloys and Compounds2007,,1:1
17A novel red phosphor for white light emitting diodes显示文摘Yunsheng Hu Weidong Zhuang Hongqi Ye 2005Journal of Alloys and Compounds2005,390,12:1
18显示文摘Teng Xiaoming Zhang Weidong Hu Yunsheng 2008Jour- nal of rare earths2008,26,5:1
19A novel red phosphor for white light emitting diodes显示文摘Hu Yunsheng Zhuang Weidong Ye Hongqi 2005Journal of Alloys and Compounds2005,390,:1
20Retrospective analysis of results of treatment for nasopharyngeal carcinoma in Macao显示文摘Background: Nasopharyngeal carcinoma(NPC) is a common malignancy in Southeast Asia, however, a full consensus has not yet been reached as to the value of comprehensive treatment for NPC. This study was designed to evaluate the epidemiological characteristics of NPC and their prognostic value, as well as the long-term efficacy of NPC treatment.Patients and methods: A total of 248 patients, with different stages of NPC, were included in this study.Results: The 5-year overall survival(OS) rates for patients in stages I, II, III and IV were 90.48%, 76.71%, 76.89% and 33.87%, respectively(P=0.000), while the respective 5-year progression-free survival(PFS) rates were 85.15%, 72.36%, 63.88% and 26.26%(P=0.000). The respective 5-year OS rates, according to stage, for the group that received radiotherapy combined with chemotherapy and for the group that received radiotherapy only were as follows: stages I and II, 81.67% and 79.59%(P=0.753); stage III, 79.91% and 70.38%(P=0.143); stage IV, 35.22% and 0%(P=0.000). The respective 5-year PFS rates in these groups were as follows: stages I and II, 75.83% and 74.98%(P=0.814); stage III, 74.08% and 42.25%(P=0.027); stage IV, 27.31% and 0%(P=0.000).Conclusions: Clinical staging appears to be the most important prognostic factor for NPC. As the stage number increases, both the 5-year OS and PFS significantly decrease. Adding chemotherapy to radiotherapy was not advantageous for patients with stage I or II NPC, however the addition of chemotherapy to radiotherapy significantly improved OS and PFS in patients with stage IV NPC. The addition of chemotherapy improved PFS, but not OS in patients with stage III NPC.Huiqin Dou Dongyan Hu Chileong Lam Yunsheng Liu Xiuwen Wang Wendong Zhang 2014Chinese Journal of Cancer Research2014,26,2:1
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