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11篇 您的检索式:作者名="Chengyang Zheng"
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1Current status of diagnosis and treatment of bladder cancer in China-Analyses of Chinese Bladder Cancer Consortium database显示文摘Objective:To investigate current status of diagnosis and treatment of bladder cancer in China.Methods:A database was generated by Chinese Bladder Cancer Consortium(CBCC).From January 2007 to December 2012,14,260 cases from 44 CBCC centers were included.Data of diagnosis,treatment and pathology were collected.Results:The average age was 63.5 year-old and most patients were male(84.3%).The most common histologic types were urothelial carcinoma(91.4%),adenocarcinoma(1.8%),and squamous carcinoma(1.9%).According to 1973 and 2004 WHO grading system,42.0%,41.0%,and 17.0% of patients were grade 1,2,and 3,and 16.0%,48.7%,and 35.3% of patients were papillary urothelial neoplasms of low malignant potential,low,and high grade,respectively.Non-muscle invasive bladder cancer(NMIBC)and muscle invasive bladder cancer(MIBC)were 25.2% and 74.1%,respectively(0.8% not clear).Carcinoma in situ was only 2.4%.Most patients were diagnosed by white-light cystoscopy with biopsy(74.3%).Fluorescence and narrow band imaging cystoscopy had additional detection rate of 1.0% and 4.0%,respectively.Diagnostic transurethral resection(TUR)provided detection rate of 16.9%.Most NMIBCs were treated with TUR(89.2%).After initial TUR,2.6%accepted second TUR,and 45.7%,69.9%,and 58.7% accepted immediate,induced,and maintenance chemotherapy instillation,respectively.Most MIBCs were treated with radical cystectomy(RC,59.7%).Laparoscopic RCs were 35.1%,while open RC 63.4%.Extended and standard pelvic lymph node dissection were 7% and 66%,respectively.Three most common urinary diversions were orthotopic neobladder(44%),ileal conduit(31%),and ureterocutaneostomy(23%).Only 2.3% of patients accepted neo-adjuvant chemotherapy and only 18%of T3 and T4 patients accepted adjuvant chemotherapy.Conclusion:Disease characteristics are similar to international reports,while differences of diagnosis and treatment exist.This study can provide evidences for revisions of the guideline on bladder cancer in China.Kaiwen Li Tianxin Lin Wei Xue Xin Mu Enci Xu Xu Yang Fubao Chen Guangyong Li Lulin Ma Guoliang Wang Chaozhao Liang Haoqiang Shi Ming Li Mao Tang Xueyi Xue Yisong Lv Yaoliang Deng Chengyang Li Zhiwen Chen Xiaozhou Zhou Fengshuo Jin Xudong Liu Jinxin Wei Lei Shi Xin Gou Weiyang He Liqun Zhou Lin Cai Baiye Jin Guanghou Fu Xiangbo Kong Hongyan Sun Ye Tian Lang Feng Tiejun Pan Yiyi Wu Dongwen Wang Hailong Hao Benkang Shi Yaofeng Zhu Qiang Wei Ping Han Changli Wu Dawei Tian Zhangqun Ye Zheng Liu Zhiping Wang Junqiang Tian Lin Qi Minfeng Chen Wei Li Jinchun Qi Gongxian Wang Longlong Fu Zhaolin Sun Guangheng Luo Zhoujun Shen Zhaowei Zhu Jinchun Xing Zhun Wu Dong Wei Xin Chen Yanqun Na Hongfeng Guo Chunxi Wang Zhihua Lu Chuize Kong Yang Liu Jin Yang Jianyun Hu Xin Gao Jielin Li Changjun Yin Pu Li Shan Chen Zhen Du Jiongming Li Yongji Yan Xu Zhang Shuang Huang Fangjian Zhou Zhiling Zhang Yinghao Sun Shuxiong Zeng Song Cen Jiaquan Zhou Hanzhong Li Jin Wen Jian Huang 2015Asian Journal of Urology2015,2,2:21
2NEECF: a project of nutrient enrichment experiments in China’s forests显示文摘Anthropogenic nitrogen(N)emissions to atmosphere have increased dramatically in China since 1980s,and this increase has aroused great concerns on its ecological impacts on terrestrial ecosystems.Previous studies have showed that terrestrial ecosystems in China are acting as a large carbon(C)sink,but its potential in the future remains largely uncertain.So far little work on the impacts of the N deposition on C sequestration in China’s terrestrial ecosystems has been assessed at a national scale.Aiming to assess and predict how ecological processes especially the C cycling respond to the increasing N deposition in China’s forests,recently researchers from Peking University and their partners have established a manipulation experimental network on the ecological effects of the N deposition:Nutrient Enrichment Experiments in China’s Forests Project(NEECF).The NEECF comprises 10 experiments at 7 sites located from north to south China,covering major zonal forest vegetation in eastern China from boreal forest in Greater Khingan Mountains to tropical forests in Hainan Island.This paper introduces the framework of the NEECF project and its potential policy implications.Enzai Du Zhang Zhou Peng Li Xueyang Hu Yuecun Ma Wei Wang Chengyang Zheng Jianxiao Zhu Jin-Sheng He Jingyun Fang 2013Journal of Plant Ecology2013,6,5:13
3Electrochemical performance of MCMB/(AC+LiFePO_4) lithium-ion capacitors显示文摘Lithium-ion capacitors(LICs) were fabricated using mesocarbon microbeads(MCMB) as a negative electrode and a mixture of activated carbon(AC) and LiFePO4 as a positive electrode(abbreviated as LAC).The phase structure and morphology of LAC samples were characterized by X-ray diffraction(XRD) and field emission scanning electron microscopy(FESEM).The electrochemical performance of the LICs was studied using cyclic voltammetry,charge-discharge rate measurements,and cycle performance testing.A LIC with 30 wt% LiFePO4 was found to have the best electrochemical performance with a specific energy density of 69.02 W h kg-1 remaining at 4 C rate after 100 cycles.Compared with an AC-only positive electrode system,the ratio of practical capacity to theoretical calculated capacity of the LICs was enhanced from 42.22% to 56.59%.It was proved that adding LiFePO4 to AC electrodes not only increased the capacity of the positive electrode,but also improved the electrochemical performances of the whole LICs via Li+ pre-doping.PING LiNa ZHENG JiaMing SHI ZhiQiang QI Jie WANG ChengYang 2013Chinese Science Bulletin2013,58,6:12
4Preparation of mesoporous MgO-templated carbons from phenolic resin and their applications for electric double-layer capacitors显示文摘Mesoporous carbons were synthesized using thermoplastic phenolic resin(PF) as carbonaceous precursor and magnesium citrate as template precursor.Pore structure was determined as ink-bottle-like geometry through TEM,N2 adsorption analysis combined with TG curves.The porous carbons prepared were then applied as electrode material for electric double-layer capacitors.The capacitor performance was examined in 30 wt% KOH aqueous solution by cyclic voltammetry and galvanostatic charge/discharge measurements.The carbon prepared with MgO/PF mass ratio of 8/2 had a BET surface area of 1920 m2 g-1 and exhibited a capacitance of 220 F g-1 at a current density of 50 mA g-1.Besides,the carbon with the ratio of 4/6 had the optimize proportion of mesopores,which ensures its good rate performance that up to 98.3%,expressed as the ratio of the capacitance measured at 1000 mA g-1 against that at 50 mA g-1.LIU WenJie WANG ChengYang WANG JiuZhou JIA Fan ZHENG JiaMing CHEN MingMing 2013Chinese Science Bulletin2013,58,9:2
5CoB and BN composites enabling integrated adsorption/catalysis to polysulfides for inhibiting shuttle-effect in Li-S batteries显示文摘Lithium-sulfur(Li-S)batteries are hampered by the infamous shuttle effect and slow redox kinetics,resulting in rapid capacity decay.Herein,a bifunctional catalysis CoB/BN@rGO with integrated structure and synergy effect between adsorption and catalysis is proposed to solve the above problems.The integrated CoB and BN are simultaneously and uniformly introduced on the rGO substrate through a one-step calcination strategy,applied to modify the cathode side of PP separator.The transition metal borides can catalyze the conversion of lithium polysulfides(Li_(2)Sn,n≥4),whereas the bond of B-S is too weak to absorb LPS.Thus BN introduced can effectively restrict the diffusion of polysulfides via strong chemisorption with LiSnLi+…N,while the rGO substrate ensures smooth electron transfer for redox reaction.Therefore,through the integrated adsorption/catalysis,the shuttle effect is suppressed,the kinetics of redox reaction is enhanced,and the capacity decay is reduced.Using CoB/BN@rGO modified PP separator,the Li-S batteries with high initial capacity(1450 mAh g^(-1)at 0.35 mA cm^(-2))and long-cycle stability(700 cycles at 1.74 mA cm^(-2)with a decay rate of 0.032%per cycle)are achieved.This work provides a novel insight for the preparation of bifunctional catalysis with integrated structure for long-life Li-S batteries.Tianli Wu Ting Yang Jizong Zhang Xuewen Zheng Kunlin Liu Chengyang Wang Mingming Chen 2021Journal of Energy Chemistry2021,30,8:1
6Preparation of mesoporous carbons from amphiphilic carbonaceous material for high-performance electric double-layer capacitors显示文摘Jin Wang Mingming Chen Chengyang Wang Jiuzhou Wang Jiaming Zheng 2010Journal of Power Sources2010,,1:1
7Biodiversity in China's mountains显示文摘Tang Zhiyao Wang Zhiheng Zheng Chengyang 2006Frontiers in Ecology and the Environment2006,4,7:1
8Distributed Robust Optimal Dispatch for the Microgrid Considering Output Correlation between Wind and Photovoltaic显示文摘As an effective carrier of integrated clean energy,the microgrid has attracted wide attention.The randomness of renewable energies such as wind and solar power output brings a significant cost and impact on the economics and reliability of microgrids.This paper proposes an optimization scheme based on the distributionally robust optimization(DRO)model for a microgrid considering solar-wind correlation.Firstly,scenarios of wind and solar power output scenarios are generated based on non-parametric kernel density estimation and the Frank-Copula function;then the generated scenario results are reduced by K-means clustering;finally,the probability confidence interval of scenario distribution is constrained by 1-norm and∞-norm.The model is solved by a column-and-constraint generation algorithm.Experimental studies are conducted on a microgrid system in Jiangsu,China and the obtained scheduling solution turned out to be superior under wind and solar power uncertainties,which verifies the effectiveness of the proposed DRO model.Ming Li Cairen Furifu Chengyang Ge Yunping Zheng Shunfu Lin Ronghui Liu 2023Energy Engineering2023,120,8:0
9Halide Anchors for Single-Cluster Electronics显示文摘Due to their unique electronic structure,well-defined metal clusters at the atomic level are promising materials for single-cluster electronics.However,coupling between the electrode and the cluster remains challenging mainly due to the coverage of bulky ligands on the noble clusters.Using the scanning tunneling microscopy break junction(STM-BJ)technique,we have developed a“direct contact”approach to fabrication and investigation of the charge transport through single-cluster junctions of AgCu bimetallic metal clusterswith different halide anchors.Wefound that the electrodes could make contact directly with the surface halides of the single-cluster junctions and experience different contact resistance from different halogen atoms.Experiments and calculations reveal that the halide anchors provided efficient coupling between the cluster and the electrode,and the enhanced coupling with various halide anchors promoted electron transport and improved transmission probability.Our work offers a“direct contact”strategy for interface design between clusters of noble metals and electrodes,an essential step in progress toward single-cluster electronics.Caiyun Wei Jingyao Ye Yuming Su Jueting Zheng Siqiang Xiao Jiawei Chen Saisai Yuan Chengyang Zhang Jie Bai Han Xu Jia Shi Jiale Huang Wenjing Hong 2023CCS Chemistry2023,5,7:0
10LOEN:Lensless opto-electronic neural network empowered machine vision显示文摘Machine vision faces bottlenecks in computing power consumption and large amounts of data.Although opto-electronic hybrid neural networks can provide assistance,they usually have complex structures and are highly dependent on a coherent light source;therefore,they are not suitable for natural lighting environment applications.In this paper,we propose a novel lensless opto-electronic neural network architecture for machine vision applications.The architecture optimizes a passive optical mask by means of a task-oriented neural network design,performs the optical convolution calculation operation using the lensless architecture,and reduces the device size and amount of calculation required.We demonstrate the performance of handwritten digit classification tasks with a multiple-kernel mask in which accuracies of as much as 97.21%were achieved.Furthermore,we optimize a large-kernel mask to perform optical encryption for privacy-protecting face recognition,thereby obtaining the same recognition accuracy performance as no-encryption methods.Compared with the random MLS pattern,the recognition accuracy is improved by more than 6%.Wanxin Shi Zheng Huang Honghao Huang Chengyang Hu Minghua Chen Sigang Yang Hongwei Chen 2022Light(Science & Applications)2022,11,6:0
11Vulnerability assessment of UAV engine to laser based on improved shotline method显示文摘Laser anti-drone technology is entering the sequence of actual combat,and it is necessary to consider the vulnerability of typical functional parts of UAVs.Since the concept of'vulnerability'was proposed,a variety of analysis programs for battlefield targets to traditional weapons have been developed,but a comprehensive assessment methodology for targets'vulnerability to laser is still missing.Based on the shotline method,this paper proposes a method that equates laser beam to shotline array,an efficient vulnerability analysis program of target to laser is established by this method,and the program includes the circuit board and the wire into the vulnerability analysis category,which improves the precision of the vulnerability analysis.Taking the UAV engine part as the target of vulnerability analysis,combine with the'life-death unit method'to calculate the laser penetration rate of various materials of the UAV,and the influence of laser weapon system parameters and striking orientation on the killing probability is quantified after introducing the penetration rate into the vulnerability analysis program.The quantitative analysis method proposed in this paper has certain general expansibility,which can provide a fresh idea for the vulnerability analysis of other targets to laser.Le Liu Chengyang Xu Changbin Zheng Sheng Cai Chunrui Wang Jin Guo 2024Defence Technology(防务技术)2024,33,3:0
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