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A preventive opportunistic maintenance method for railway traction power supply system based on equipment reliability

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Railway Engineering Science 2020年第2期28卷 199-211页

作者： sheng Lin Nan Li Ding Feng xiaomin Guo Weiguo pan Jun Wang Chao Yang School of Electrical Engineering Southwest Jiaotong UniversityChengdu 610031China Beijing National Railway Research&Design Institute of Signal Communication Group Company Beijing 100070China State Grid Neijiang Electric Power Supply Company Neijiang 641100China

Conventional maintenance mode for the traction power supply system(TPSS)is to perform scheduled regular maintenance activities for power supply equipment,while such maintenance mode may result in undue maintenance tasks and low efficiency due to different degradation processes of different sorts of *** address this problem,this paper introduces a preventive opportunistic maintenance(POM)method for TPSS based on equipment ***,a POM model is established by considering the equipment reliability degradation process based on Weibull ***,by considering the total power outage time in the planned operation cycle of TPSS as the optimization objective,the optimal maintenance scheme of TPSS is formulated by iterative method of maintenance *** proposed method is verified by introducing practical maintenance strategies and fault record data of the traction transformer,circuit breaker and disconnector in an actual TPSS of a railway *** show that the presented method can make full use of the existing fault data to develop a POM scheme for *** can improve maintenance efficiency and reduce power outage time,providing guidance to formulate scientific maintenance strategies for TPSS.

关键词： Electrified railway Opportunistic maintenance interval Preventive opportunistic maintenance Reliability Traction power supply system Weibull distribution

应用EMD-AR谱提取柴油机曲轴轴承故障特征

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振动．测试与诊断 2010年第3期30卷 318-321页

作者：夏天王新晴肖云魁梁升解放军理工大学工程兵工程学院机械装备系南京210007 解放军军事交通学院汽车工程系天津300161

提出了一种基于经验模式分解(EMD)和AR(auto regressive)谱技术相结合的曲轴轴承磨损故障诊断的新方法。利用EMD方法分解发动机非稳态加速振动信号,得到一系列平稳的本征模式函数(IMF)分量,对占信号能量主要部分的前5阶IMF分量进行AR谱... 详细信息

提出了一种基于经验模式分解(EMD)和AR(auto regressive)谱技术相结合的曲轴轴承磨损故障诊断的新方法。利用EMD方法分解发动机非稳态加速振动信号,得到一系列平稳的本征模式函数(IMF)分量,对占信号能量主要部分的前5阶IMF分量进行AR谱估计,分析各IMF分量的AR谱频带能量,提取能够反映曲轴轴承磨损故障的IMF分量的AR谱频带能量作为故障特征参数。试验时设置6组不同的振动传感器放置部位和4组不同的采集器触发转速,并利用本文提出的方法分析采集到的发动机非稳态振动信号。分析结果表明,基于EMD及AR谱技术提取得到的故障特征能够准确反映曲轴轴承的磨损状态,且当发动机转速高于1300 r/min,传感器放置于缸体与油底结合部右侧时,提取的故障特征最明显。

关键词：经验模式分解柴油发动机故障诊断曲轴轴承 AR谱

以聚醚聚酯丙烯酸酯为交联剂的pH响应性水凝胶纳米微球的制备及药物释放研究

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材料导报 2022年第14期36卷 212-218页

作者：宗丹盛扬李新庆潘艳孙一新邓林红 Mark Bradley 张嵘常州大学材料科学与工程学院江苏常州213164 常州市第二人民医院江苏常州213003 常州大学生物医学工程与健康科学研究院江苏常州213164 英国爱丁堡大学化学学院爱丁堡EH93 JJ

以聚乙二醇(M_(w)1000)为引发剂,引发ε-己内酯和L-丙交酯开环聚合,制备聚(己内酯-co-乳酸)-聚乙二醇共聚物二醇(PCLA),用甲基丙烯酸酐封端得到PCLA预聚物单体(PCLAMA),并用红外光谱、核磁氢谱和凝胶渗透色谱对合成产物的组成和结构进... 详细信息

以聚乙二醇(M_(w)1000)为引发剂,引发ε-己内酯和L-丙交酯开环聚合,制备聚(己内酯-co-乳酸)-聚乙二醇共聚物二醇(PCLA),用甲基丙烯酸酐封端得到PCLA预聚物单体(PCLAMA),并用红外光谱、核磁氢谱和凝胶渗透色谱对合成产物的组成和结构进行了表征。以PCLAMA为大分子交联剂、N-乙烯基吡咯烷酮和丙烯酸为共聚单体,利用紫外引发聚合制备水凝胶纳米微球(PCLAMA-AP),并对其溶胀、降解、药物释放、细胞毒性等性能进行了分析。结果表明,PCLAMA-AP具有pH响应性,其溶胀率随着pH的增大而变大,其中最佳配比下的纳米微球包载茶多酚的载药量超过57%,132 h的累计释放率达到30%,PCLAMA-AP与人脂肪干细胞共培养48 h后,细胞存活率高于94%,并且纳米微球能成功进入细胞。因此该水凝胶纳米微球具有作为药物载体的潜力,有可能极大地提高茶多酚的生物利用效率。

关键词：聚(己内酯-co-乳酸) 水凝胶纳米微球药物缓释生物可降解茶多酚

Z型异质结In_(2)O_(3)/CdS的合成及光降解抗生素研究

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工业水处理 2021年第9期41卷 92-97页

作者：潘紫薇顾心童张雪莹盛铭军吴小敏黄继会王伟郭永福苏州科技大学环境科学与工程学院江苏苏州215009 联创新锐设计顾问(武汉)有限公司湖北武汉430014 苏州市供排水管理处江苏苏州215004 苏州市排水有限公司江苏苏州215021

为了拓展对可见光的吸收范围、抑制光生载流子的复合,并增强催化剂的光催化性能,通过将CdS原位生长于In_(2)O_(3)表面的方法制备出In_(2)O_(3)/CdS催化剂。结果表明:在可见光照射60 min后,In_(2)O_(3)/CdS异质结对盐酸强力霉素的去除效... 详细信息

为了拓展对可见光的吸收范围、抑制光生载流子的复合,并增强催化剂的光催化性能,通过将CdS原位生长于In_(2)O_(3)表面的方法制备出In_(2)O_(3)/CdS催化剂。结果表明:在可见光照射60 min后,In_(2)O_(3)/CdS异质结对盐酸强力霉素的去除效率达84.0%,远高于In_(2)O_(3)和CdS单体的降解效率,降解过程符合一级动力学。In_(2)O_(3)/CdS对盐酸强力霉素的降解速率常数为0.028 min^(-1),分别为In_(2)O_(3)和CdS单体的13.7倍和1.5倍。自由基捕获实验表明:·O^(-)_(2)和·OH是主要的活性基团,光催化性能的提高主要得益于Z型异质结的形成,有效加速了光生电子和空穴的转移和分离效率。

关键词： In_(2)O_(3)/CdS Z型异质结光催化抗生素

Expert consensus on the diagnosis and treatment of solid tumors with BRAF mutations

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The Innovation 2024年第6期5卷 100-116页

作者： Wenxian Wang Bin Lian Chunwei Xu Qian Wang Ziming Li Nan Zheng Aijun Liu Jinpu Yu Wenzhao Zhong Zhijie Wang Yongchang Zhang Jingjing Liu Shirong Zhang Xiuyu Cai Anwen Liu Wen Li Lili Mao Ping Zhan Hongbing Liu Tangfeng Lv Liyun Miao Lingfeng Min Yu Chen Jingping Yuan Feng Wang Zhansheng Jiang Gen Lin Long Huang Xingxiang Pu Rongbo Lin Weifeng Liu Chuangzhou Rao Dongqing Lv Zongyang Yu Xiaoyan Li Chuanhao Tang Chengzhi Zhou Junping Zhang Junli Xue Hui Guo Qian Chu Rui Meng Xuewen Liu Jingxun Wu Rui Zhang Jin Zhou Zhengfei Zhu Yongheng Li Hong Qiu Fan Xia Yuanyuan Lu Xiaofeng Chen Jian Feng Rui Ge Enyong Dai Yu Han Weiwei pan Fei pang Xin Huang Meizhen Hu Qing Hao Kai Wang Fan Wu Binbin Song Bingwei Xu Liping Wang Youcai Zhu Li Lin Yanru Xie xinqing Lin Jing Cai Ling Xu Jisheng Li Xiaodong Jiao Kainan Li Jia Wei Huijing Feng Lin Wang Yingying Du Wang Yao Xuefei Shi xiaomin Niu Dongmei Yuan Yanwen Yao Jianhui Huang Yue Feng Yinbin Zhang Pingli Sun Hong Wang Mingxiang Ye Dong Wang Zhaofeng Wang Yue Hao Zhen Wang Bin Wan Donglai Lv shengjie Yang Jin Kang Jiatao Zhang Chao Zhang Wenfeng Li Jianfei Fu Lizhi Wu Shijie Lan Juanjuan Ou Lin Shi Zhanqiang Zhai Yina Wang Bihui Li Zhang Zhang Ke Wang Xuelei Ma Zhongwu Li Zhefeng Liu Nong Yang Lin Wu Huijuan Wang Gu Jin Guansong Wang Jiandong Wang Hubing Shi Meiyu Fang Yong Fang Yuan Li Xiaojia Wang Jing Chen Yiping Zhang Xixu Zhu Yi Shen shenglin Ma Biyun Wang Yong Song Zhengbo Song Wenfeng Fang Yuanzhi Lu Lu Si Department of Chemotherapy Chinese Academy of Sciences University Cancer Hospital(Zhejiang Cancer Hospital)HangzhouZhejiang 310022P.R.China Key Laboratory of Carcinogenesis and Translational Research(Ministry of Education/Beijing) Department of Melanoma and SarcomaPeking University Cancer Hospital&InstituteBeijing 100142P.R.China Institute of Cancer and Basic Medicine(ICBM) Chinese Academy of SciencesHangzhouZhejiang 310022P.R.China Department of Respiratory Medicine Affiliated Jinling HospitalMedical School of Nanjing UniversityNanjingJiangsu 210002P.R.China Department of Respiratory Medicine Affiliated Hospital of Nanjing University of Chinese MedicineJiangsu Province Hospital of Chinese MedicineNanjingJiangsu 210029P.R.China Department of Shanghai Lung Cancer Center Shanghai Chest HospitalShanghai Jiao Tong UniversityShanghai 200030P.R.China Beijing Key Laboratory of Mental Disorders National Clinical Research Center for Mental Disorders&National Center for Mental DisordersBeijing Anding HospitalCapital Medical UniversityBeijing 200030China Advanced Innovation Center for Human Brain Protection Capital Medical UniversityBeijing 200030China Senior Department of Pathology the 7th Medical Center of PLA General HospitalBeijing 100700P.R.China Department of Cancer Molecular Diagnostics Core Tianjin Medical University Cancer Institute and HospitalTianjin 300060P.R.China Guangdong Lung Cancer Institute Guangdong Provincial Laboratory of Translational Medicine in Lung CancerGuangdong Provincial People’s HospitalGuangdong Academy of Medical SciencesSchool of MedicineGuangzhouGuangdong 510080P.R.China State Key Laboratory of Molecular Oncology Department of Medical OncologyNational Cancer Center/National Clinical Research Center for Cancer/Cancer HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100021P.R.China Department of Medical Oncology Lung Cancer and Gastrointestinal UnitHunan Cancer Hospital/The Affiliated Cancer Hospital of Xiangya School

The BRAF gene is an important signaling molecule in human cells that is involved in the regulation of cell growth,differentiation,and *** the BRAF gene mutates,it can lead to abnormal activation of the signaling pathway,which promotes cell proliferation,inhibits cell apoptosis,and ultimately contributes to the occurrence and development of *** mutations are widely present in various cancers,including malignant melanoma,thyroid cancer,colorectal cancer,non-small cell lung cancer,and hairy cell leukemia,among *** is an important target for the treatment of various solid tumors,and targeted combination therapies,represented by BRAF inhibitors,have become one of the main treatment modalities for a variety of BRAF-mutation-positive solid tumors.

关键词： BRAF diagnosis treatment

CEPC Technical Design Report

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Radiation Detection Technology and Methods 2024年第1期8卷 I0003-I0016,1-1091页

作者： Waleed Abdallah Tiago Carlos Adorno de Freitas Konstantin Afanaciev Shakeel Ahmad Ijaz Ahmed Xiaocong Ai Abid Aleem Wolfgang Altmannshofer Fabio Alves Weiming An Rui An Daniele Paolo Anderle Stefan Antusch Yasuo Arai Andrej Arbuzov Abdesslam Arhrib Mustafa Ashry Sha Bai Yu Bai Yang Bai Vipul Bairathi Csaba Balazs Philip Bambade Yong Ban Tripamo Bandyopadhyay Shou-Shan Bao Desmond P.Barber Ayse Bat Varvara Batozskaya Subash Chandra Behera Alexander Belyaev Michele Bertucci Xiao-Jun Bi Yuanjie Bi Tianjian Bian Fabrizio Bianchi Thomas Biekotter Michela Biglietti Shalva Bilanishvili Deng Binglin Denis Bodrov Anton Bogomyagkov Serge Bondarenko Stewart Boogert Maarten Boonekamp Marcello Borri Angelo Bosotti Vincent Boudry Mohammed Boukidi Igor Boyko Ivanka Bozovic Giuseppe Bozzi Jean-Claude Brient Anastasiia Budzinskaya Masroor Bukhari Vladimir Bytev Giacomo Cacciapaglia Hua Cai Wenyong Cai Wujun Cai Yijian Cai Yizhou Cai Yuchen Cai Haiying Cai Huacheng Cai Lorenzo Calibbi Junsong Cang Guofu Cao Jianshe Cao Antoine Chance Xuejun Chang Yue Chang Zhe Chang Xinyuan Chang Wei Chao Auttakit Chatrabhuti Yimin Che Yuzhi Che Bin Chen Danping Chen Fuqing Chen Fusan Chen Gang Chen Guoming Chen Hua-Xing Chen Huirun Chen Jinhui Chen Ji-Yuan Chen Kai Chen Mali Chen Mingjun Chen Mingshui Chen Ning Chen Shanhong Chen Shanzhen Chen Shao-Long Chen Shaomin Chen Shiqiang Chen Tianlu Chen Wei Chen Xiang Chen Xiaoyu Chen Xin Chen Xun Chen Xurong Chen Ye Chen Ying Chen Yukai Chen Zelin Chen Zilin Chen Gang Chen Boping Chen Chunhui Chen Hok Chuen Cheng Huajie Cheng Shan Cheng Tongguang Cheng Yunlong Chi Pietro Chimenti Wen Han Chiu Guk Cho Ming-Chung Chu Xiaotong Chu Ziliang Chu Guglielmo Coloretti Andreas Crivellin Hanhua Cui Xiaohao Cui Zhaoyuan Cui Brunella D'Anzi Ling-Yun Dai Xinchen Dai Xuwen Dai Antonio De Maria Nicola De Filippis Christophe De La Taille Francesca De Mori Chiara De Sio Elisa Del Core Shuangxue Deng Wei-Tian Deng Zhi Deng Ziyan Deng Bhupal Dev Tang Dewen Biagio Di Micco Ran Ding Siqin Dingl Yadong Ding Haiyi Dong Jianin AGH University of Science and Technology Faculty of Physics and Applied Computer ScienceKrakow Anhui University HefeiAnhui Applied Physics Department Federal Urdu University of ArtsScience and TechnologyIslamabad Banaras Hindu University Institute of ScienceVaranasi Bandirma Onyedi Eylul University Bandirma Beihang University Beijing Beijing Computational Science Research Center Beijing Beijing Conveyi LTD Beijing Beijing Glass Research Institute Co. LtdBeijing Beijing Institute of Technology Beijing Beijing Normal University Beijing Brown University ProvidenceRI Budker Institute of Nuclear Physics Novosibirsk Cadi Ayyad University Laboratory of Fundamental and Applied PhysicsPolydisciplinary FacultyMarrakech Cairo University Giza Center for Theory and Computation National Tsing Hua UniversityHsinchu Central China Normal University WuhanHubei Central South University ChangshaHunan Centro de Fisica Teorica de Particulas Universidade Tecnica de LisboaLisboa Chengdu KaitengSifang Digital Radio&TV Equipment Co. LtdChengduSichuan China academy of engineering physics MianyangSichuan China building materials academy Beijing China Center of Advanced Science and Technology Beijing China Institute of Atomic Energy Beijing China Jiliang University HangzhouZhejiang China Nuclear Instrument CO. LTDBeijing China University of Geosciences Beijing China University of Geosciences WuhanHubei China University of Mining and Technology XuzhouJiangsu China West Normal University NanchongSichuan Chongqing University Department of PhysicsChongqing Chulalongkorn University Bangkok City University of Hong Kong Department of PhysicsHong Kong Cockcroft Institute Daresbury Cornell University IthacaNY CPPM(AMU/IPhU&CNRS/INP) Marseille Dalian Minzu University DalianLiaoning Dalian University of Technology Department of PhysicsDalian Deutsches Elektronen-Synchrotron DESY Hamburg Dzhelepov Laboratory of Nuclear Problems of Joint Institute for Nuclear Research(DLNP JINR) Dubna East China University Of Science And Technol

The Circular Electron Positron Collider(CEPC)is a large scientific project initiated and hosted by China,fostered through extensive collaboration with international *** complex comprises four accelerators:a 30 GeV Linac,a 1.1 GeV Damping Ring,a Booster capable of achieving energies up to 180 GeV,and a Collider operating at varying energy modes(Z,W,H,and tt).The Linac and Damping Ring are situated on the surface,while the subterranean Booster and Collider are housed in a 100 km circumference underground tunnel,strategically accommodating future expansion with provisions for a potential Super Proton Proton Collider(SPPC).The CEPC primarily serves as a Higgs *** its baseline design with synchrotron radiation(SR)power of 30 MW per beam,it can achieve a luminosity of 5×10^(34)cm^(-2)s^(-1)per interaction point(IP),resulting in an integrated luminosity of 13 ab^(-1)for two IPs over a decade,producing 2.6 million Higgs *** the SR power to 50 MW per beam expands the CEPC's capability to generate 4.3 million Higgs bosons,facilitating precise measurements of Higgs coupling at sub-percent levels,exceeding the precision expected from the HL-LHC by an order of *** Technical Design Report(TDR)follows the Preliminary Conceptual Design Report(Pre-CDR,2015)and the Conceptual Design Report(CDR,2018),comprehensively detailing the machine's layout,performance metrics,physical design and analysis,technical systems design,R&D and prototyping efforts,and associated civil engineering ***,it includes a cost estimate and a preliminary construction timeline,establishing a framework for forthcoming engineering design phase and site selection *** is anticipated to begin around 2027-2028,pending government approval,with an estimated duration of 8 *** commencement of experiments and data collection could potentially be initiated in the mid-2030s.

关键词： initiated exceeding precise