检索结果-南通市图书馆

Measurement of the neutron total cross section of carbon at the Back-n white neutron beam of CSNS

Nuclear Science and Techniques 2019年第9期30卷 73-82页

作者： Xing-yan liu Yi-wei yang Rong liu Jie Wen Zhong-wei Wen Zi-Jie Han zhi-Zhou Ren Qi An Huai-Yong Bai Jie Bao Ping Cao Qi-Ping Chen Yong-Hao Chen Pin-Jing Cheng Zeng-Qi Cui Rui-Rui Fan Chang-Qing feng Min-Hao Gu feng-Qin Guo Chang-Cai Han Guo-Zhu He Yong-Cheng He Yue-feng He Han-Xiong Huang wei-ling Huang Xi-Ru Huang xiao-Lu Ji Xu-yang Ji Hao-Yu Jiang wei Jiang Han-Tao Jing ling Kang Ming-Tao Kang Bo li Lun li Qiang li xiao li yang li yang li Shu-Bin liu Guang-Yuan Luan Ying-lin Ma Chang-Jun Ning Bin-Bin Qi Jie Ren Xi-Chao Ruan Zhao-Hui Song Hong Sun xiao-yang Sun zhi-Jia Sun zhi-Xin Tan Hong-Qing Tang Jing-Yu Tang Peng-Cheng wang Qi wang Tao-feng wang yan-feng wang Zhao-Hui wang zheng wang Qing-Biao Wu xiao-Guang Wu Xuan Wu li-Kun Xie Han Yi li Yu Tao Yu Yong-Ji Yu Guo-Hui Zhang Jing Zhang lin-Hao Zhang li-Ying Zhang Qing-Min Zhang Qi-wei Zhang Xian-Peng Zhang Yu-liang Zhang zhi-Yong Zhang Ying-Tan Zhao liang Zhou Zu-Ying Zhou Dan-yang Zhu ke-Jun Zhu Peng Zhu Institute of Nuclear Physics and Chemistry China Academy of Engineering Physics State key Laboratory of Particle Detection and Electronics Chinese Academy of Sciences(CAS) Department of Modern Physics University of Science and Technology of China State key Laboratory of Nuclear Physics and Technology School of PhysicsPeking University key Laboratory of Nuclear Data China Institute of Atomic Energy Institute of High Energy Physics Chinese Academy of Sciences(CAS) Spallation Neutron Source Science Center University of South China Northwest Institute of Nuclear Technology Department of Engineering and Applied Physics University of Science and Technology of China Beihang University Xi’an Jiaotong University

To verify the performance of the neutron total cross-sectional spectrometer, the neutron total cross section of carbon is initially measured in the energy range of 1 eV to 20 MeV using the time-of-flight method. The measurement is performed at the Back-n white neutron source with a 76-m time-of-flight path using the China Spallation Neutron Source. A multilayer fast fission chamber with 235U and 238U is employed as the neutron detector. The diameter and thickness of the natural graphite sample are 70 mm and 40 mm, respectively. Signal waveforms are collected using a data acquisition system. Off-line data processing was used to obtain the neutron time-of-flight spectra and transmissions. The uncertainty of the counting statistics is generally approximately 3% for each bin in the energy range of 1–20 MeV. It is determined that the results for the neutron total cross section of carbon obtained using ^235U cells are in good agreement with the results obtained using 238U cells within limits of statistical uncertainty. Moreover, the measured total cross sections show good agreement with the broadening evaluated data.

关键词： CSNS Back-n white neutron source NTOX Neutron total cross section Carbon Multilayer fast fission chamber

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

薯蓣茎叶化学成分研究

引用

中国药学杂志 2021年第12期56卷 963-970页

作者：任英杰曹彦刚曾梦楠张贝贝刘晏灵王梦娜何晨张艳丽郑晓珂冯卫生河南中医药大学药学院呼吸疾病诊疗与新药研发河南省协同创新中心郑州450046

目的对薯蓣科植物薯蓣(Dioscotea opposita Thunb.)的干燥茎叶进行系统的分离与结构鉴定。方法利用硅胶柱、葡聚糖凝胶Sephadex LH-20柱以及半制备液相等方法从薯蓣茎叶体积分数50%含水丙酮提取物中分离得到单体化合物,根据核磁共振波谱... 详细信息

目的对薯蓣科植物薯蓣(Dioscotea opposita Thunb.)的干燥茎叶进行系统的分离与结构鉴定。方法利用硅胶柱、葡聚糖凝胶Sephadex LH-20柱以及半制备液相等方法从薯蓣茎叶体积分数50%含水丙酮提取物中分离得到单体化合物,根据核磁共振波谱(NMR),质谱(MS)等波谱技术鉴定其结构,并通过人肝癌HepG2细胞模型初步探讨化合物的抗肿瘤活性。结果分离鉴定26个化合物,分别为芹菜素(1)、牡荆苷(2)、柯伊利素(3)、异牡荆苷(4)、8-C-rhamnosylapigenin(5)、柯伊利素-7-O-β-D-葡萄糖苷(6)、3′-O-甲基表儿茶素-7-O-β-D-吡喃葡萄糖苷(7)、柯伊利素-7-O-槐糖苷(8)、drymariatin C(9)、开环异落叶松脂醇(10)、苄基-β-D-吡喃葡萄糖苷(11)、northalifoline(12)、芍药苷(13)、蔷薇酸(14)、breyniaionoside D(15)、4-hydroxy-3,5-dimethoxybenzaldehyde(16)、间苯三酚三甲醚(17)、3-methoxy-4-hydroxy-phenylethanol(18)、3,4′-dihydroxy-3′-methoxypropiophenone(19)、对羟基苯甲酸(20)、对羟基苯甲醛(21)、香草酸(22)、阿魏酸(23)、肉桂酸(24)、苯甲酸(25)和对香豆酸(26)。结论其中21个化合物是首次从植物薯蓣中分离得到,分别为化合物2,4~10,12~17,19~20,22~26,17个化合物是首次从薯蓣属植物中分离得到,分别为化合物2,4~10,12~15,17,19,23~25,且化合物1,3,6~8,11~15,17~18,22~23,25~26在10μmol·L^(-1)剂量下显著性抑制HepG2增殖,具有潜在的抗癌活性。

关键词：薯蓣科薯蓣芹菜素蔷薇酸抗癌

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

The Longmen Cloud Physics Field Experiment Base, China Meteorological Administration

引用

Journal of Tropical Meteorology 2023年第1期29卷 1-15页

作者：刘显通阮征胡胜万齐林刘黎平罗亚丽胡志群黎慧琦肖辉雷卫延夏丰饶晓娜冯璐赖睿泽吴翀叶朗明郭泽勇张羽王瑶颜朝潮袁锦涵 Guangdong Provincial key Laboratory of Regional Numerical Weather Prediction/Guangzhou Institute of Tropical and Marine Meteorology China Meteorological AdministrationGuangzhou 510640 China State key Laboratory of Severe Weather Chinese Academy of Meteorological SciencesBeijing 100081 China Huizhou Meteorological Bureau HuizhouGuangdong 516003 China Jiangmen Meteorological Bureau JiangmenGuangdong 529000 China yangjiang Meteorological Bureau YangjiangGuangdong 529500 China Guangzhou Meteorological Observatory Guangzhou 511430 China

Aiming at the needs of mechanism analysis of rainstorms and development of numerical prediction models in south China, the Guangzhou Institute of Tropical and Marine Meteorology of China Meteorological Administration and the Chinese Academy of Meteorological Sciences jointly set up the Longmen Cloud Physics Field Experiment Base,China Meteorological Administration. This paper introduces the instruments and field experiments of this base, provides an overview of the recent advances in retrieval algorithms of microphysical parameters, improved understanding of microphysical characteristics, as well as the formation mechanisms and numerical prediction of heavy rainfalls in south China based on the field experiments dataset.

关键词： cloud physics heavy rainfall field experiment south China

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

The DIRECT consortium and the REST-meta-MDD project:towards neuroimaging biomarkers of major depressive disorder

引用

Psychoradiology 2022年第1期2卷 32-42页

作者： xiao Chen Bin Lu Hui-Xian li Xue-Ying li Yu-wei wang Francisco Xavier Castellanos li-Ping Cao Ning-Xuan Chen wei Chen Yu-Qi Cheng Shi-Xian Cui Zhao-Yu Deng Yi-Ru Fang Qi-Yong Gong Wen-Bin Guo zheng-Jia-Yi Hu li Kuang Bao-Juan li Le li Tao li Tao lian Yi-Fan liao yan-Song liu Zhe-Ning liu Jian-Ping Lu Qing-Hua Luo Hua-Qing Meng Dai-Hui Peng Jiang Qiu Yue-Di Shen Tian-Mei Si yan-Qing Tang Chuan-Yue wang Fei wang Hua-Ning wang Kai wang Xiang wang Ying wang Zi-Han wang xiao-Ping Wu Chun-Ming Xie Guang-Rong Xie Peng Xie Xiu-feng Xu Hong yang Jian yang Shu-Qiao Yao Yong-Qiang Yu Yong-Gui Yuan ke-Rang Zhang wei Zhang zhi-Jun Zhang Jun-Juan Zhu Xi-Nian Zuo Jing-Ping Zhao Yu-feng Zang the DIRECT consortium Chao-Gan yan CAS key Laboratory of Behavioral Science Institute of PsychologyChinese Academy of SciencesBeijing 100101China International Big-Data Center for Depression Research Chinese Academy of SciencesBeijing 100101China Magnetic Resonance Imaging Research Center Institute of PsychologyChinese Academy of SciencesBeijing 100101China Department of Psychology University of Chinese Academy of SciencesBeijing 100049China Sino-Danish College University of Chinese Academy of SciencesBeijing 101408China Sino-Danish Center for Education and Research Graduate University of Chinese Academy of SciencesBeijing 101408China Department of Child and Adolescent Psychiatry NYU Grossman School of MedicineNew YorkNY 10016USA Nathan Kline Institute for Psychiatric Research OrangeburgNew YorkNY 10962USA 9Affiliated Brain Hospital of Guangzhou Medical UniversityGuangzhou 510370China Capital Normal University Beijing 100089China Department of Psychiatry Sir Run Run Shaw HospitalZhejiang University School of MedicineHangzhou 310020ZhejiangChina Department of Psychiatry First Affiliated Hospital of Kunming Medical UniversityKunmingYunnan 650032China Shanghai Mental Health Center Shanghai Jiao Tong University School of MedicineShanghai 200030China Huaxi MR Research Center(HMRRC) Department of RadiologyWest China Hospital of Sichuan UniversityChengduSichuan 610044China Research Unit of Psychoradiology Chinese Academy of Medical SciencesChengduSichuan 610052China Department of Psychiatry and National Clinical Research Center for Mental DisordersThe Second Xiangya Hospital of Central South UniversityChangsha 410011HunanChina Department of Psychiatry The First Affiliated Hospital of Chongqing Medical UniversityChongqing 400042China Xijing Hospital of Air Force Military Medical University Xi’anShaanxi 710032China Center for Cognitive Science of Language Beijing Language and Culture UniversityBeijing 100083China Affiliated Mental Health Center&Hangzhou Seventh People’s Hospital Zhejiang University School of

Despite a growing neuroimaging literature on the pathophysiology of major depressive disorder(MDD),repro-ducible findings are lacking,probably reflecting mostly small sample sizes and heterogeneity in analytic *** address these issues,the Depression Imaging REsearch ConsorTium(DIRECT)was *** REST-meta-MDD project,pooling 2428 functional brain images processed with a standardized pipeline across all participating sites,has been the first effort from *** this review,we present an overview of the moti-vations,rationale,and principal findings of the studies so far from the REST-meta-MDD *** from the first round of analyses of the pooled repository have included alterations in functional connectivity within the default mode network,in whole-brain topological properties,in dynamic features,and in functional *** well-powered exploratory observations have also provided the basis for future longitudinal hypothesis-driven *** these fruitful explorations,DIRECT has proceeded to its second stage of data sharing that seeks to examine ethnicity in brain alterations in MDD by extending the exclusive Chinese original sample to other ethnic groups through international collaborations.A state-of-the-art,surface-based preprocessing pipeline has also been introduced to improve *** images from patients with bipolar disorder and schizophrenia will be included to identify shared and unique abnormalities across diag-nosis *** addition,large-scale longitudinal studies targeting brain network alterations following antidepressant treatment,aggregation of diffusion tensor images,and the development of functional magnetic resonance imaging-guided neuromodulation approaches are *** these endeavours,we hope to accelerate the translation of functional neuroimaging findings to clinical use,such as evaluating longitudinal effects of antidepressant medications and developing individualized

关键词： major depressive disorder DIRECT R-fMRI database neuroimaging

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

零余子中一个新的吲哚类生物碱

引用

药学学报 2018年第7期53卷 1131-1133页

作者：冯卫生郭孟焕殷艺阁曹彦刚杨翠兰王洋洋齐曼张艳丽任英杰刘晏灵郑晓珂河南中医药大学药学院呼吸疾病诊疗与新药研发河南省协同创新中心河南郑州450046

采用柱色谱技术分离纯化研究零余子(bulbils of Dioscorea opposite Thunb.)中的化学成分。通过理化性质和波谱数据鉴定了4个吲哚类生物碱:零余子碱(3,4-dihydro-6-hydroxy-4-methyl-6H-pyrido[6,5-b]indol-5(1H)-one)(1)、anoectochine(2)、ginsenine(3)和吲哚乳酸酯(4)。其中化合物1为新化合物,命名为:零余子碱,化合物2～4均为首次从该植物中得到。通过MTT法评价化合物的细胞毒活性,这4个化合物对人肝瘤细胞HepG2和乳腺癌细胞MDA-231的IC_(50)值均大于100μmol·L^(-1),均未表现出明显的细胞毒活性。

关键词：薯蓣属零余子化学成分吲哚类生物碱细胞毒

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Guidelines for Diagnosis and Treatment of Atopic Dermatitis in China(2020)#

引用

International Journal of Dermatology and Venereology 2021年第1期4卷 1-9页

作者： Xu Yao zhi-Qiang Song wei li Yun-sheng liang yan Zhao Hua Cao Tao Chen Xue Chen Ai-Ping feng Song-Mei Geng Heng Gu Shu-Ping Guo yan-ling He Ye-Hong Kuang Chun-Ying li xiao-Hong li zheng-xiao li Jun-Qin liang Hong-Ye liu ling-ling liu Yu-Mei liu zhi liu Hai Long Qian-Jin Lu yan Lu xiao-Qun Luo xiao-yan Lv lin Ma Zhu Shen Xin Shi Zhong-Xiang Shi Xiang-yang Su Qing Sun Jian-Ping Tang Ao-Xue wang Hui-Ping wang Jian-Qin wang Ming-Yue wang Zai-Xing wang Yu-Min Xia Ting xiao zhi-Qiang Xie Huan Xing Ying Xiong Zi-Gang Xu Bin yang zhi-Rong Yao Jian-Bin Yu Nan Yu Kang Zeng Jian-Zhong Zhang Jun-ling Zhang Hua Zhao Zuo-Tao Zhao wei Zhu Ying-Hua Zhu Ying Zou Atopic Dermatitis Working Group,Immunology Group,Chinese Society of Dermatology Hospital for Skin Diseases(Institute of Dermatology) Chinese Academy of Medical SciencesNanjingJiangsu 210042China Southwest Hospital of Military Medical University Chongqing 400038China Huashan Hospital Affiliated with Fudan UniversityShanghai 200040China Dermatology Hospital of Southern Medical University GuangzhouGuangdong 510091China Peking University People’s Hospital Beijing 100044China Ruijin Hospital Affiliated with Shanghai Jiaotong UniversityShanghai 310000China Chengdu Second People’s Hospital ChengduSichuan 610017China Union Hospital Affiliated with Tongji Medical College of Huazhong University of Science and Technology WuhanHubei 430022China The Second Affiliated Hospital of Xi’an Jiaotong University Xi’anShaanxi 710004China First Hospital of Shanxi Medical University TaiyuanShanxi 030012China Beijing Chao-yang Hospital Capital Medical UniversityBeijing 100027China Xiangya Hospital Central South UniversityChangshaHunan 410008China Xijing Hospital Fourth Military Medical UniversityXi’anShaanxi 710032China The First Affiliated Hospital of zhengzhou University ZhengzhouHenan 450052China People’s Hospital of Xinjiang Uygur Autonomous Region WulumuqiXinjiang 830001China Peking University First Hospital Beijing 100034China Guangzhou Institute of Dermatology GuangzhouGuangdong 510095China The Affiliated Hospital of Guizhou Medical University GuiyangGuizhou 550004China The Second Xiangya Hospital of Central South University ChangshaHunan 410011China The First Affiliated Hospital of Nanjing Medical University NanjingJiangsu 210029China West China Hospital Sichuan UniversityChengduSichuan 610041China Beijing Children’s Hospital Capital Medical UniversityBeijing 100045China Sichuan Academy of Medical Sciences&Sichuan Provincial People’s Hospital ChengduSichuan 610072China The Second Affiliated Hospital of Soochow University SuzhouJiangsu 215004China Shandong Provincial Dermatology Hospital JinanShandong 250022China The Third Affiliated Hospital of Sun Yat-sen U

Atopic dermatitis(AD)is a common disease clinically characterized by chronic recurrent eczematous lesions,dry skin,and *** can negatively impact patients’quality of *** prevalence of AD in China has been increasing during the past few *** on the most recent advances in the treatment of AD,we updated the 2014 version of the Guidelines for Diagnosis and Treatment of Atopic Dermatitis in China regarding the definition,epidemiology,pathogenesis,clinical classification,diagnosis,prevention,and treatment of AD.

关键词： atopic dermatitis diagnosis therapy guideline

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Centralized isolation of Helicobacter pylori from multiple centers and transport condition influences

引用

World Journal of Gastroenterology 2015年第3期21卷 944-952页

作者： Ya-Nan Gong You-Ming li Ning-Min yang Hong-Zhang li feng Guo Lang lin Qun-Ying wang Jia-Kun Zhang Zi-Zhong Ji Ji-Bo Mao Jun-liang Mao zheng-Chao Shi Wu-Heng Tang Xin-Jian Zhu wei Shao xiao-feng Zhang Xing-Hua wang Yue-feng Tong Mi-Zu Jiang Guang-Lan Chen zhi-Yong wang Hui-Min Tu Guo-Fa Jiang Jian-sheng Wu Xu-Peng Chen Qiu-Long Ding Hong Ouyang feng-Zhe Jin yan-li Xu Jian-Zhong Zhang State key Laboratory for Infectious Disease Prevention and Control National Institute for Communicable Disease Control and PreventionChinese Center for Disease Control and Prevention Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases The First Affiliated Hospital College of MedicineZhejiang University zhiyuan Medical Inspection Institute Co. Ltd. Sanmen People’s Hospital The First People’s Hospital of xiaoshan District The First People’s Hospital of Cangnan Jinhua Municipal Central Hospital The First People’s Hospital of Pingyang The First Hospital of Jiaxing Zhoushan Hospital The First People’s Hospital of Wenling Rui’an People’s Hospital Maternal and Child Health Hospital of Zhoushan City Shangyu People’s Hospital People’s Hospital of Putuo District Zhoushan Hangzhou First People’s Hospital Qingtian People’s Hospital The First People’s Hospital of Yongkang The Children’s Hospital Zhejiang University School of Medicine lishui People’s Hospital The Affiliated Hospital of Hangzhou Normal University Wuxi No.4 Hospital Affiliated to Suzhou University Jinhua Wenrong Hospital The First Affiliated Hospital of Wenzhou Medical College Yueqing People’s Hospital Tiantai People’s Hospital lin’an people’s Hospital Rui’an City TCM Hospital Medical College of Hebei University of Engineering

AIM:To evaluate the efficacy of centralized culture and possible influencing ***:From January 2010 to July 2012,66452 patients with suspected Helicobacter pylori(***) infection from 26 hospitals in Zhejiang and Jiangsu Provinces in China underwent gastrointestinal *** mucosal biopsies were taken from the antrum for *** biopsies were transported under natural environmental temperature to the central laboratory in Hangzhou city and divided into three groups based on their transport time:5,24 and 48 *** culture results were reported after 72 h and the positive culture rates were analyzed by a χ2 *** additional 5736 biopsies from ***-positive patients(5646 rapid urease test-positive and 90 14C-urease breath test-positive) were also cultured for quality control in the central laboratory ***:The positive culture rate was 31.66%(21036/66452) for the patient samples and 71.72%(4114/5736) for the ***-positive quality control *** the 5 h transport group,the positiveculture rate was 30.99%(3865/12471),and 32.84%(14960/45553) in the 24 h transport *** contrast,the positive culture rate declined significantly in the 48 h transport group(26.25%; P lined from 36.67%(1462/3987) to 24.12%(1799/7459).When the temperature exceeded 24℃,the positive culture rate decreased significantly,especially in the 48 h transport group(23.17%).CONCLUSION:Transportation of specimens within 24 h and below 24℃ is reasonable and acceptable for centralized culture of multicenter *** samples.

关键词： Centralized isolation Helicobacter pylori Influenc

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

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

引用

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

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

闽北邵武地区萤石矿综合信息找矿方法研究

引用

地球学报 2022年第3期43卷 404-410页

作者：栗克坤商朋强韩志坤王春连焦森王桂香袁昌盛张青松刘增政闫晓博范亚洲蒋济勇靳乾峰中化地质矿山总局河南地质局河南郑州450011 中化地质矿山总局北京100013 中国地质科学院矿产资源研究所自然资源部成矿作用与资源评价重点实验室北京100037 华北水利水电大学地球科学与工程学院河南郑州450045

福建邵武地区萤石矿属热液充填型,萤石矿赋存于NE向、近SN向断裂破碎带中。目前萤石矿找矿工作逐渐向隐伏矿和深部矿转移,本文通过该区张厝萤石矿预测区物化探综合信息方法找矿实例,探讨隐伏-隐半伏萤石矿物化探综合预测方法组合。结果... 详细信息

福建邵武地区萤石矿属热液充填型,萤石矿赋存于NE向、近SN向断裂破碎带中。目前萤石矿找矿工作逐渐向隐伏矿和深部矿转移,本文通过该区张厝萤石矿预测区物化探综合信息方法找矿实例,探讨隐伏-隐半伏萤石矿物化探综合预测方法组合。结果表明:区域化探、高精度磁测、视电阻率联合剖面和可控源大地音频电磁测深等物化探技术方法组合对热液充填型萤石矿勘查评价具有较好的效果。

关键词：萤石矿视电阻率联合剖面测量可控源大地音频电磁测深邵武地区

来源：

维普期刊数据库博看期刊

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

首例长江江豚的野化及行为适应性研究

引用

水生生物学报 2023年第10期47卷 1709-1718页

作者：邱建松孙晓冬王丁郝玉江郑劲松李威伦范飞邓晓君毛峻峰曾强江华炎邓在贵龚成徐春永王克雄梅志刚中国科学院水生生物研究所武汉430072 中国科学院大学北京10049 武汉白鱀豚保护基金会武汉430074 湖北长江新螺段白鱀豚国家级自然保护区管理处洪湖433200 湖北长江天鹅洲白鱀豚国家级自然保护区管理处石首434400

长江江豚的迁地保护目前已取得初步成功,野化放归是迁地保护的最后一环,也是实现迁地保护目标的必然要求。在此背景下,于2021年4月将来自天鹅洲故道迁地保护区的2头雄性长江江豚转移至与长江干流环境相似的老湾故道,尝试开展野化训练,... 详细信息

长江江豚的迁地保护目前已取得初步成功,野化放归是迁地保护的最后一环,也是实现迁地保护目标的必然要求。在此背景下,于2021年4月将来自天鹅洲故道迁地保护区的2头雄性长江江豚转移至与长江干流环境相似的老湾故道,尝试开展野化训练,探究其行为和发声的适应过程,评估其巡游、捕食和发声等行为能否适应较恶劣的环境,为将来规模化的野化,甚至放归自然栖息地提供技术支撑。经过为期1年的野化训练和持续监测,结果表明,老湾故道鱼类密度显著低于天鹅洲故道,丰水期鱼体密度分布不均,上游较中下游高。江豚在上游的每日平均停留时间显著高于中下游, Spearman相关性分析表明与鱼群的密度分布有显著相关性。在进入故道的前2月,江豚顺流巡游所需时间逐渐增加达到峰值,随后降低并趋于稳定。在船舶噪声适应性训练中,江豚的平均呼吸间隔在存在船只干扰时显著降低,随着干扰次数的增加,逐渐恢复至无干扰时的水平。由此认为, 2头江豚对老湾故道的低鱼类资源密度、季节性变化的流速环境及人工施加的船只噪声干扰有良好的适应性,具备放归长江的条件。这是首次实施完全自然环境中江豚的野化训练,将为规模化的野化放归提供技术支撑,促进江豚自然种群的恢复。

关键词：长江长江江豚野化训练适应性放归迁地保护

来源：

维普期刊数据库博看期刊

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：