检索结果-南通市图书馆

Characteristics and interpretation of the seismic signal of a field-scale landslide dam failure experiment

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

Journal of Mountain Science 2017年第2期14卷 219-236页

作者： YAN Yan CUI Peng CHEN Su-chin CHEN Xiao-qing CHEN Hua-yong CHIEN Yi-liang Key Laboratory of Mountain Surface Process and Hazards/Institute of Mountain Hazards and Environment Chinese Academy of SciencesChengdu 610041China University of chinese Academy of Sciences Beijing 100049China Center for Excellence in Tibetan Plateau Earth Sciences Chinese Academy of SciencesBeijing 100101China Department of Soil and Water Conservation National Chung Hsing UniversityTaichung 40227Chinese Taipei

Outburst floods caused by breaches of landslide dams may cause serious damages and loss of lives in downstream areas; for this reason the study of the dynamic of the process is of particular interest for hazard and risk assessment. In this paper we report a field-scale landslide dam failure experiment conducted in Nantou County, in the central of *** seismic signal generated during the dam failure was monitored using a broadband seismometer and the signal was used to study the dam failure *** used the short-time Fourier transform(STFT) to obtain the time–frequency characteristics of the signal and analyzed the correlation between the power spectrum density(PSD) of the signal and the water level. The results indicate that the seismic signal generated during the process consisted of three components: a low-frequency band(0–1.5 Hz), an intermediate-frequency band(1.5–10 Hz) and a highfrequency band(10–45 Hz). We obtained the characteristics of each frequency band and the variations of the signal in various stages of the landslide dam failure process. We determined the cause for the signal changes in each frequency band and its relationship with the dam failure process. The PSD sediment flux estimation model was used to interpret the causes of variations in the signal energy before the dam failure and the clockwise hysteresis during the failure. Our results show that the seismic signal reflects the physical characteristics of the landslide dam failure process. The method and equipment used in this study may be used to monitor landslide dams and providing early warnings for dam failures.

关键词：信号特征滑坡坝地震仪试验短时傅里叶变换地震信号监测方法频率特性

维普期刊数据库

USE OF HEMAGGLUTINATION TEST IN CLINICAL DIAGNOSIS OF TYPHUS FEVER

在线全文

学校读者我要写书评

暂无评论

中华医学杂志(英文版) 1964年第8期83卷 541-544页

作者： LI TSAI-LIEN CHU YÜ-LUNG KENG WEN-chin CH'EN K'O-chung HSÜ CHEN-CH'ÜAN DepartmentofMicrobiology ShantungMedicalCollegeTsinan

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

带楼板的钢梁和CFT柱抗弯连接的抗震分析

钢结构 2008年第6期23卷 82-83页

作者： chin-Tung Cheng Lap-Loi chung

对4个带楼板的钢管混凝土柱连接进行抗震性能分析,包括2个内部和2个外部节点。研究目的主要是对台湾地区广泛采用的钢梁组合楼板的性能进行分析。其次对梁末端楔形翼缘或者较大剪切键等连接处的抗震性能也进行了研究,以避免如Northridg... 详细信息

对4个带楼板的钢管混凝土柱连接进行抗震性能分析,包括2个内部和2个外部节点。研究目的主要是对台湾地区广泛采用的钢梁组合楼板的性能进行分析。其次对梁末端楔形翼缘或者较大剪切键等连接处的抗震性能也进行了研究,以避免如Northridge地震后出现的那种不可预料的脆性破坏导致的梁翼缘焊缝完全熔透。此外,通过试验研究,推导了评估此类节点连接力-变形特性的分析模型。同时还对板域剪力转换区的楼板作用进行了研究。

关键词：钢管混凝土组合结构梁柱连接板域剪切变形试验

维普期刊数据库

Hybrid vs sequential therapy for eradication of Helicobacter pylori in Taiwan: a prospective randomized trial

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2015年第36期21卷 10435-10442页

作者： Kuan-Yang Chen Tsung-Jung Lin chin-Lin Lin Hsi-Chang Lee chung-Kwe Wang Deng-Chyang Wu Institute of Clinical Medicine National YangMing University Institute of Neuroscience National Chengchi University Liver Center Department of GastroenterologyRen-Ai BranchTaipei City Hospital Division of Gastroenterology Department of Internal MedicineKaohsiung Medical University Hospital Division of Internal Medicine Kaohsiung Municipal Hsiao-Kang HospitalKaohsiung Medical University Center for Stem Cell Research Kaohsiung Medical University Hospital Department of Medicine Faculty of MedicineCollege of MedicineKaohsiung Medical University Center for Infectious Disease and Cancer Research Kaohsiung Medical University

AIM: To evaluate the efficacy of sequential vs hybrid therapy in patients with Helicobacter pylori(H. pylori) ***: From March 2013 to May 2014,one hundred and seventy-five H. pylori infected patients who had not been treated for H. pylori before wererandomized to receive either sequential therapy(rabeprazole 20 mg and amoxicillin 1 g twice daily for 5 d,followed by rabeprazole 20 mg,clarithromycin 500 mg and metronidazole 500 mg twice daily for 5 d) or hybrid therapy(rabeprazole 20 mg and amoxicillin 1 g for 7 d,followed by rabeprazole 20 mg,amoxicillin 1 g,clarithromycin 500 mg and metronidazole 500 mg twice daily for 7 d). H. pylori status was confirmed by positive results of both rapid urease test and histology examination or a positive result of culture. Eradication efficacy was assessed by follow-up endoscopy with rapid urease test and histological examination 8 wk after the end of anti-H. pylori therapy,or 13C-urea breath test at least 4 wk after completion of treatment. The primary outcome was H. pylori eradication by intension-to-treat(ITT) and per-protocol(PP) ***: One hundred and sixty-seven patients(83 patients in the sequential group and 84 patients in the hybrid group) completed the study. The compliance rates were 97.6% and 97.7% for the two groups,respectively. The eradication rate was 78.2% for the sequential group and 92% for the hybrid group by ITT analysis(P = 0.01). The eradication rate was 81.9% for the sequential group and 96.4% for the hybrid group by PP analysis(P = 0.01). Univariate analysis for the clinical and bacterial factors did not identify any risk factors associated with treatment failure. Severe adverse events were observed in 2.3% of patients in the sequential group and 2.4% of those in the hybrid ***: Due to a grade A(> 95%) success rate for H. pylori eradication by PP analysis,similar compliance and adverse events,hybrid therapy seems to be an appropriate eradication regimen in Taiwan.

关键词： Helicobacter pylori Sequential therapy Hybrid ther

Hyperbaric oxygen therapy reduces the risk of acute myocardial injury following carbon monoxide poisoning

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

Hyperbaric oxygen therapy reduces the risk of acute myocardi...

Selective brain cooling attenuates intestine and brain injury in a rat model of hemorrhagic shock

第十一届海峡两岸心血管科学研讨会、2017年全国心脑血管药理学术会议、中国卒中学会第一次新药研讨会

作者： Huang Hung-Sheng Huang Chien-Cheng Lin Hung-Jung Hsu Chien-chin Ho chung-Han Department of Emergency Medicine Chi-Mei Medical Center Department of Medical Research Chi Mei Medical Center

Objectives:Carbon monoxide poisoning(COP) may increases the risk for myocardial *** conducted this study to investigate whether hyperbaric oxygen therapy(HBOT) reduces the risk for myocardial injury following COP,which is still ***:We used a Nationwide Poisoning Database to identify 25,737 COP patients,including 7,278 patients with HBOT and 18,459 patients without HBOT,between 1999 and *** risk for

关键词： Hyperbaric oxygen therapy reduces the risk of acute myocardial injury following carbon monoxide poisoning

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Selective brain cooling attenuates intestine and brain injur...

An Efficient Session Key Generation Protocol

第十一届海峡两岸心血管科学研讨会、2017年全国心脑血管药理学术会议、中国卒中学会第一次新药研讨会

作者： Wang Che-Chuan Hsu Chien-chin Chio chung-ching Lin Hung-Jung Lin Kao-Chang Department of Neurosurgery Chi Mei Medical Center Department of Emergency Medicine Chi Mei Medical Center Department of Neurology Chi Mei Medical Center

Hemorrhagic shock(HGS) is the leading cause of mortality in trauma *** loss and subsequent systemic hypotension are major causes of secondary insult to the brain following *** aimed to analyze the therapeutic effects of retrograde hypothermic retrograde jugular vein flush(HRJVF) after HGS and resuscitation in a rat *** rats were randomized into four groups as follows:sham operation group,HGS group,HGS with HRJVF 36℃ saline group,and HGS

关键词： Selective brain cooling attenuates intestine and brain injury in a rat model of hemorrhagic shock

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

An Efficient Session Key Generation Protocol

Protective Effect of Taurine in the Induction of Genotoxicity by Mutagenic Drugs

2003 International Conference on Communication Technology

作者： chin-Chen Chang Chi-Yien chung Department of Computer Science and Information Engineering Nation chung Cheng University Chiayi Taiwan 621 R.O.C.

Key exchange is an important subject in cryptosystem, which has marched the world into the complicated application of communication technology nowadays. A common cryptographic technique is used to enc

关键词： Key exchange session key public key cryptography.

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Journal of Pharmacy and Pharmacology 2018年第1期6卷 1-9页

作者： Priscila Longhin Bosquesi Caue Benito Scarim Jose Ricardo Soares de Oliveira Ednir de Oliveira Vizioli Jean Leandro dos Santos chung Man chin Departamento de Farmacos e Medicamentos Faculdade de Ciencias Farmaceuticas Universidade Estadual Paulista "Julio deMesquita Filho " UNESP Araraquara 14800-903 Brasil

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

含碱金属分子簇体系的结构和NLO性质

高等学校化学学报 2007年第6期28卷 1110-1112页

作者：孙晓颖李志儒吴迪孙家锺唐敖庆吉林大学理论化学研究所理论化学计算国家重点实验室长春130021

采用MP2方法优化得到Li(HF)n(n=2～4)体系的三个环型结构.使用高水平的从头算方法MP2/6-311++G(3df,3pd)计算了它们的偶极矩μ0、极化率α0和一阶超极化率β0.得出了大的一阶超极化率的变化规律,并揭示出额外电子是引起大一阶超极化率... 详细信息

采用MP2方法优化得到Li(HF)n(n=2～4)体系的三个环型结构.使用高水平的从头算方法MP2/6-311++G(3df,3pd)计算了它们的偶极矩μ0、极化率α0和一阶超极化率β0.得出了大的一阶超极化率的变化规律,并揭示出额外电子是引起大一阶超极化率的主要原因.

关键词：从头算非线性光学(NL0)性质含碱金属的分子簇体系

维普期刊数据库