检索结果-南通市图书馆

Journal of Central South University of Technology 2005年第Z1期12卷 82-87页

作者： zheng ya-jie zou wei-hong yi dan-qing gong zhu-qing li xin-hai School of Metallurgical Science and Engineering Central South University Changsha 410083 China School of Metallurgical Science and Engineering Central South University Changsha 410083 China School of Materials Science and Engineering Central South University Changsha 410083 China School of Metallurgical Science and Engineering Central South University Changsha 410083 China School of Metallurgical Science and Engineering Central South University Changsha 410083 China

Electroless copper plating process of N, N, N′, N′-tetrakis (2-hydroxypropyl)ethylenediamine(THPED) chelating agent was researched comprehensively. The results indicate that plating rate decreases with the 3H2O has a bad effect on deposits quality, but 2, 2′-dipyridyl and PEG make deposits quality improve greatly. Low concentration of 2-mercaptobenzothiozole (2-MBT) increases plating rate and improves deposits quality, but decreases plating rate and worsens deposits quality when 2-MBT reaches 5 mg/L. The optimal conditions of this electroless MBT are 16.8 g/L, 16.0 mL/L, 13.3 g/L, 0.5 g/L, 5.0 mg/L and 2.0 mg/L, respectively, pH value is 12.75,bath temperature is 30 ℃. Plating rate reaches 9.54 μm/h plating for 30 min in the bath. The SEM images demonstrate that the surface of copper film is smooth and the crystal is fine.

关键词： electroless copper plating plating rate N, N, N′, N′-tetrakis(2-hydroxypropl) ethylenediamine additive

酒石酸钾钠和EDTA·2Na盐化学镀铜体系

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中南大学学报（自然科学版） 2005年第6期36卷 971-976页

作者：郑雅杰邹伟红易丹青龚竹青李新海中南大学冶金科学与工程学院湖南长沙410083 中南大学材料科学与工程学院湖南长沙410083

研究了酒石酸钾钠(TART)和EDTA·2Na盐双络合化学镀铜体系中各因素对沉铜速度稳定性及镀层附着力的影响。实验结果表明化学镀铜速度随着络合剂酒石酸钾钠和EDTA·2Na盐浓度以及施镀时间的增加而减小,随着硫酸铜浓度、甲醛浓度、溶液pH... 详细信息

研究了酒石酸钾钠(TART)和EDTA·2Na盐双络合化学镀铜体系中各因素对沉铜速度稳定性及镀层附着力的影响。实验结果表明化学镀铜速度随着络合剂酒石酸钾钠和EDTA·2Na盐浓度以及施镀时间的增加而减小,随着硫酸铜浓度、甲醛浓度、溶液pH值和反应温度的增加而增加;添加剂α,α′-联吡啶、亚铁氰化钾和PEG-1000对镀铜速度的影响较小,但对铜镀层外观质量影响较大。其化学镀铜最佳条件为CuSO4·5H2O质量浓度为16g/L,EDTA·2Na盐为21g/L,酒石酸钾钠为16g/L,甲醛为5.0g/L,亚铁氰化钾为70mg/L,α,α′-联吡啶为8mg/L,PEG-1000为1g/L,pH值为12.75,镀液温度为50℃。在最佳条件下,化学镀铜30min后所得镀层附着力良好、外观红亮且镀速达到3.4μm/h。由扫描电镜照片可见镀层表面平整、光滑、晶粒细致。

关键词：化学镀铜沉铜速度稳定性 ABS基材

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以硫铁矿烧渣为原料制备绿矾新技术

化学工程 2005年第4期33卷 51-55页

作者：郑雅杰龚竹青易丹青李新海中南大学冶金科学与工程学院湖南长沙410083 材料科学与工程学院湖南长沙410083

以硫铁矿烧渣为原料,采用机械活化硫铁矿还原法制备绿矾具有成本低、反应快、产品质量高等优点。在硫铁矿烧渣与硫酸反应后所得酸浸液中加入机械活化硫铁矿,当酸浸液组成为[Fe3+]=2.130mol/L、[Fe2+]=0.100mol/L、[H+]=0.700mol/L,反应... 详细信息

以硫铁矿烧渣为原料,采用机械活化硫铁矿还原法制备绿矾具有成本低、反应快、产品质量高等优点。在硫铁矿烧渣与硫酸反应后所得酸浸液中加入机械活化硫铁矿,当酸浸液组成为[Fe3+]=2.130mol/L、[Fe2+]=0.100mol/L、[H+]=0.700mol/L,反应温度为80℃,液固比为100∶20时,反应90min,Fe3+还原率达到99.05%,反应所得绿矾质量好于GB10531-89工业优等品。增加球料比、延长球磨时间、降低反应液固比、提高反应温度均有利于加快活化硫铁矿与Fe3+的反应速度,反应后硫铁矿仍具有良好的反应活性。

关键词：硫铁矿烧渣硫铁矿机械活化绿矾

四羟丙基乙二胺和EDTA·2Na盐化学镀铜体系研究

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材料保护 2006年第2期39卷 20-24页

作者：郑雅杰邹伟红易丹青龚竹青李新海中南大学冶金科学与工程学院湖南长沙410083 中南大学材料科学与工程学院湖南长沙410083

为了降低成本、提高镀层质量和镀液的稳定性，以混合配位体（EDTA-2Na）代替THPED（四羟丙基乙二胺），系统研究了THPED和EDTA·2Na盐双配住体化学镀铜体系。对镀速、镀液稳定性及镀层附着力的研究结果表明，镀速随EDTA·2Na盐、硫酸铜... 详细信息

为了降低成本、提高镀层质量和镀液的稳定性，以混合配位体（EDTA-2Na）代替THPED（四羟丙基乙二胺），系统研究了THPED和EDTA·2Na盐双配住体化学镀铜体系。对镀速、镀液稳定性及镀层附着力的研究结果表明，镀速随EDTA·2Na盐、硫酸铜和甲醛浓度的增加先升高后降低；随THPED浓度的增加先降低后升高；随溶液pH值和镀液温度增加而升高；添加剂亚铁氰化钾、α，α′-联吡啶和2-MBT虽均使镀速减慢，但能使镀层外观变好；聚乙二醇-1000（PEG-1000）对镀速影响较小，但能使镀层质量变好。其化学镀铜最佳条件为THPED 10．0g／L，EDTA·2Na 8．7g／L，CuS04-5H2O 12．0g／L，甲醛（37％-40％）16．0mL／L，α，α′-联吡啶10．0mg／L，亚铁氰化钾40．0mg／L，PEG-1000 1．0g／L，2-MBT（二巯基苯骈噻唑）0．5mg／L，pH值13．2及镀液温度50℃。在最佳条件下获得的镀层外观红亮、表面平整，镀液稳定，镀速达到4．05μm／h。由SEM分析可知，镀层表面平整、光滑、晶粒细致。

关键词：化学镀铜配体镀速四羟丙基Cz-2Na EDTA·2Na 工艺优化

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

Data release of the LAMOST pilot survey

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Research in Astronomy and Astrophysics 2012年第9期12卷 1243-1246页

作者： A-li Luo Hao-Tong Zhang Yong-Heng Zhao Gang Zhao Xiang-Qun Cui Guo-Ping li yao-Quan Chu Jian-Rong Shi Gang Wang Jian-Nan Zhang Zhong-Rui Bai Xiao-yan Chen Feng-Fei Wang yan-xin Guo Jian-Jun Chen Bing Du Xiao Kong ya-Juan Lei yin-Bi li yi-Han Song Yue Wu yan-Xia Zhang xin-lin Zhou Fang Zuo Peng Du lin He Wen Hou yi-Qiao Dong Jian li Guang-wei li Shuang li Jing Song Yuan Tian Meng-xin Wang Yong-Hui Hou Zhi-ying Huo hong-zhuan Hu Ning-Sheng Hu Zhong-Wen Hu Lei Jia Fang-Hua Jiang Xiang Jiang Zi-Bo Jiang Ge Jin Ai-Hua li Qi li yin-Dun Mao zheng-hong Tang qing-Sheng Tao liang-Ping Tu Da-qing Wang dan Wang Jian-Ping Wang Lei Wang Shou-Guan Wang Shu-qing Wang ya-Nan Wang You Wang Yue-Fei Wang Ming-Zhi wei Xiang-Xiang Xue Xiao-zheng xing ling-Zhe Xu xin-Qi Xu yan Xu De-Hua yang Shi-hai yang zheng-Qiu yao Yong Yu Hui Yuan Chao Zhai En-Peng Zhang Jing Zhang li-Ping Zhang weiZhang Yong Zhang Zhen-Chao Zhang Ming Zhao Fang Zhou Yong-Tian zhu jie zhu Si-Cheng zou National Astronomical Observatories Chinese Academy of Sciences Beijing 100012 China lal @ lamost o rg Nanjing Institute of Astronomical Optics and Technology National Astronomical ObservatoriesChinese Academy of Sciences Nanjing 210042 China University of Science and Technologyof China Hefei 230026 China Shanghai Astronomical Observatory Chinese Academy of Sciences Shanghai 200030 China Institute of Architecture Design and Research Chinese Academy of Sciences Beijing 100190China

This paper describes the data release of the LAMOST pilot survey, which includes data reduction, calibration, spectral analysis, data products and data access. The accuracy of the released data and the information about the FITS headers of spectra are also introduced. The released data set includes 319 000 spectra and a catalog of these objects.

关键词： techniques: spectroscopic survey — data reduction — data release

The first data release(DR1) of the LAMOST regular survey

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Research in Astronomy and Astrophysics 2015年第8期15卷 1095-1124页

作者： A-li Luo Yong-Heng Zhao Gang Zhao li-Cai Deng Xiao-wei liu yi-Peng Jing Gang Wang Hao-Tong Zhang Jian-Rong Shi Xiang-Qun Cui yao-Quan Chu Guo-Ping li Zhong-Rui Bai Yue Wu yan Cai Shu-Yun Cao Zi-Huang Cao Jeffrey L.Carlin hai-Yuan Chen Jian-Jun Chen Kun-xin Chen li Chen Xue-Lei Chen Xiao-yan Chen ying Chen Norbert Christlieb Jia-Ru Chu Chen-Zhou Cui yi-Qiao Dong Bing Du Dong-wei Fan Lei Feng Jian-Ning Fu Peng Gao Xue-Fei gong Bo-Zhong Gu yan-xin Guo Zhan-Wen Han Bo-liang He Jin-liang Hou Yong-Hui Hou Wen Hou hong-zhuan Hu Ning-Sheng Hu Zhong-Wen Hu Zhi-ying Huo Lei Jia Fang-Hua Jiang Xiang Jiang Zhi-Bo Jiang Ge Jin Xiao Kong Xu Kong ya-Juan Lei Ai-Hua li Chang-Hua li Guang-wei li hai-Ning li Jian li Qi li Shuang li Sha-Sha li xin-Nan li yan li yin-Bi li Ye-Ping li Yuan liang Chien-Cheng lin Chao liu Gen-Rong liu Guan-Qun liu Zhi-Gang liu Wen-Zhi Lu Yu Luo yin-Dun Mao Heidi Newberg Ji-Jun Ni Zhao-Xiang Qi Yong-Jun Qi Shi-yin Shen Huo-Ming Shi Jing Song yi-Han Song Ding-Qiang Su hong-Jun Su zheng-hong Tang qing-Sheng Tao Yuan Tian dan Wang Da-Qi Wang Feng-Fei Wang Guo-Min Wang hai Wang hong-Chi Wang Jian Wang Jia-Ning Wang Jian-ling Wang Jian-Ping Wang Jun-Xian Wang Lei Wang Meng-xin Wang Shou-Guan Wang Shu-qing Wang Xia Wang ya-Nan Wang You Wang Yue-Fei Wang You-Fen Wang Peng wei Ming-Zhi wei hong Wu Ke-Fei Wu Xue-Bing Wu Yu-Zhong Wu Xiao-zheng xing ling-Zhe Xu xin-Qi Xu yan Xu Tai-Sheng yan De-Hua yang hai-Feng yang Hui-Qin yang Ming yang zheng-Qiu yao Yong Yu Hui Yuan hai-Bo Yuan hai-Long Yuan wei-Min Yuan Chao Zhai En-Peng Zhang Hua-wei Zhang Jian-Nan Zhang li-Pin Zhang wei Zhang Yong Zhang yan-Xia Zhang zheng-Chao Zhang Ming Zhao Fang Zhou Xu Zhou jie zhu Yong-Tian zhu Si-Cheng zou Fang Zuo National Astronomical Observatories Chinese Academy of Sciences Department of Astronomy Peking University Shanghai Astronomical Observatory Chinese Academy of Sciences Nanjing Institute of Astronomical Optics & Technology National Astronomical ObservatoriesChinese Academy of Sciences University of Science and Technology of China Department of Physics Applied Physics and AstronomyRensselaer Polytechnic InstituteTroyNY 12180USA Department of Physics and Astronomy Earlham CollegeRichmondIN 47374USA Universitt Heidelberg Zentrum für AstronomieLandessternwarteKnigstuhl 1269117 HeidelbergGermany Department of Astronomy Beijing Normal University Yunnan Observatories Chinese Academy of Sciences Purple Mountain Observatory Chinese Academy of Sciences

The Large sky Area Multi-Object Fiber Spectroscopic Telescope（LAMOST） general survey is a spectroscopic survey that will eventually cover approximately half of the celestial sphere and collect 10 million spectra of stars, galaxies and QSOs. Objects in both the pilot survey and the first year regular survey are included in the LAMOST DR1. The pilot survey started in October 2011 and ended in June 2012, and the data have been released to the public as the LAMOST Pilot Data Release in August 2012. The regular survey started in September 2012, and completed its first year of operation in June 2013. The LAMOST DR1 includes a total of 1202 plates containing 2 955 336 spectra, of which 1 790 879 spectra have observed signalto-noise ratio（SNR） ≥ 10. All data with SNR ≥ 2 are formally released as LAMOST DR1 under the LAMOST data policy. This data release contains a total of 2 204 696 spectra, of which 1 944 329 are stellar spectra, 12 082 are galaxy spectra and 5017 are quasars. The DR1 not only includes spectra, but also three stellar catalogs with measured parameters： late A,FGK-type stars with high quality spectra（1 061 918 entries）, A-type stars（100 073 entries）, and M-type stars（121 522 entries）. This paper introduces the survey design, the observational and instrumental limitations, data reduction and analysis, and some caveats. A description of the FITS structure of spectral files and parameter catalogs is also provided.

关键词： techniques: spectroscopic survey—data release—catalog

Consensus statement on layout and delivery of automatic external defibrillator in China

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Journal of hainan Medical University 2020年第15期26卷 18-23页

作者： Yu Cao Song Chen yan-Fen Chai Xiao-Hui Chen Yu-Guo Chen Shao-Wen Cheng Wen-wei Cheng Bang-Han Ding yang Deng jie Fu Bang-Jiang Fang Mai-ying Fan li Gui Ping gong wei Guo Shu-Bin Guo liang Huang Ji-Yuan Han Zhong Ji Xian-Fei Ji xin-Cai Ji hong-Xu Jin xin-Jun Jiang Wang-Xiang Jiang Jia-liang liu Xiao-Ran liu Zhi liu Chuan-zhu Lv Feng Lu Tan-Shi li xin li Yong li Shang-Lun li Shuang-Ming li Xiao-Gang li Bao-Jun li Pei-Wu li Chun-Sheng li Zhi-Jun li Chang-Luo li Xiang-Min li yin-Ping li Zong-Jun Lu Zu-Xun Lu Zhong-Qiu Lu Zhi-Qian Luo Xiao-xing liao Jian-Bo Lei Tao Ma Yu Ma Yue-Feng Ma qing-Bian Ma lin-Hao Ma Jun-Qi Ma Shi-Nan Nie jie-Miao Ou-yang Peng Peng Qiao Pei Shu-Ming Pan Guo-Zhong qing li-jie Qin Wu-ying Qiao Fei Shao wei Song xing-Yue Song Zhen-Ju Song Rong-Ju Sun De-ya Shang Du-Juan Sha Gui-Lan Tao Guo-Gang Tian ying-Ping Tian Jian-Guang Tian Chao-yang Tong Zi-Ren Tang Meng-Xiong Tang Guo-Ping Wu Zhi Wan Tao Wang xin Wang Peng Wang Zhong Wang Tong Wang Ri-xing Wang yi-xin Wang Xiao-dan Wang ling Wu wei wei Hua Xiang Feng Xu Jun Xu jie Xu Miao-Rong Xie Shuo-Gui Xu Tie Xu Feng Yu Wen yi li-Shan yang Shi-Jiao yan Jin-Jian yao Shou-Chun yan Xue-Zhong Yu Xian-Zhi Ye Xian-liang yan Fu-Bing Zhou Rong-Bin Zhou Ming Zhou Qiang Zhou Jin Zhou Ping Zhou Chang-Ju zhu Hua-Dong zhu Ji-hong zhu hong Zhang Mao Zhang Hua Zhang Na Zhang Guo-Qiang Zhang Guo-Xiu Zhang Jin-Song Zhang Wen-Wu Zhang Wen-Zhong Zhang Jian-Feng Zhang yi-Min zhu Jun Zeng Yuan zheng Zhi-jie zheng Shen Zhao yan Zhao Min Zhao Bin Zhao Xiao-Dong Zhao Xiao-Jing Zhao hong-Ke Zeng Sheng-Qiang zou The Chinese Society of Emergency Medicine Research Unit of Island Emergency Medicine Chinese Academy of Medical SciencesHainan Medical University Key Laboratory of Emergency and Trauma of Ministry of Education Hainan Medical UniversityHaikouHainanChina Emergency and Trauma College Hainan Medical UniversityHaikouHainanChina Department of Emergency Hainan Clinical Research Center for Acute and Critical DiseasesThe Second Affiliated Hospital of Hainan Medical UniversityHaikouHainanChina Key Laboratory of hainan Trauma and Disaster Rescue Key Laboratory of Trauma of hainan Medical University

*** Sudden cardiac death(SCD)refers to sudden death due to a variety of cardiac *** is manifested as a sudden loss of consciousness,cardiac arrest,and respiratory arrest and generally shows early symptoms that are atypical and not easily detected[1].According to a recent study,nearly 544000 patients suffer from SCD every year in China[2].

关键词： cardiac death respiratory