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Disbond detection with piezoelectric wafer active sensors in RC structures strengthened with FRP composite overlays

Earthquake Engineering and Engineering Vibration 2003年第2期2卷 213-223页

作者： Victor Giurgiutiu Kent Harries michael petrou Joel Bost Josh B.Quattlebaum Department of Mechanical Engineering University of South CarolinaUSA Associate Professor Department of Civil and Environmental Engineering University of South CarolinaUSA Assistant Professor Department of Civil and Environmental Engineering University of South CarolinaUSA Associate Professor Department of Mechanical Engineering University of South CarolinaUSA Undergraduate Research Assistant Department of Civil and Environmental Engineering University of South CarolinaUSA Graduate Research Assistant

The capability of embedded piezoelectric wafer active sensors(PWAS)to perform in-situ nondestructive evaluation(NDE)for structural health monitoring(SHM)of reinforced concrete(RC)structures strengthened with fiber reinforced polymer(FRP)composite overlays is ***,the disbond detection method were developed on coupon specimens consisting of concrete blocks covered with an FRP composite *** was found that the presence of a disbond crack drastically changes the electromecfianical(E/M)impedance spectrum lneasurcd at the PWAS *** spectral changes depend on the distance between the PWAS and the crack ***,large scale experiments were conducted on a RC beam strengthened with carbon fiber reinforced polymer(CFRP)composite *** beam was subject to an accelerated fatigue load regime in a three-point bending configuration up to a total of 807,415 *** these fatigue tests,the CFRP overlay experienced disbonding beginning at about 500,000 *** PWAS were able to detect the disbonding before it could be reliably seen by visual *** correlation between the PWAS readings and the position and extent of disbond damage was *** preliminary results demonstrate the potential of PWAS technology for SHM of RC structures strengthened with FRP composite overlays.

关键词： FRP composite overlays composite strengthening and rehabilitation structural health monitoring piezoelectric wafer active sensors E/M impedance aging infrastructure disbond damage PWAS

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Radiofrequency ablation-assisted liver resection a step toward bloodless liver resection

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Hepatobiliary & Pancreatic Diseases International 2015年第1期14卷 69-74页

作者： Athanasios petrou Kyriakos Neofytou Constantinos Mihas Jessamy Bagenal michael Kontos John Griniatsos Evangelos Felekouras Nicosia Surgical Department Division of Hepatobiliary Pancreatic Surgery Nicosia General Hospital First Department of Surgery University of Athens Medical School LAIKO Teaching Hospital Bristol Heart Institute Severn School of Surgery

BACKGROUND： Liver resection is currently the most efficient curative approach for a wide variety of liver tumors. The application of modern techniques and new surgical devices has improved operative outcomes. Radiofrequency ablation is used more often for liver parenchymal transection. This study aimed to assess the efficacy and safety of radiofrequency ablation-assisted liver ***： A retrospective study of 145 consecutive patients who underwent radiofrequency ablation-assisted liver resection was performed. Intraoperative blood loss, need for transfusion or intraoperative Pringle maneuver, the duration of liver parenchymal transection, perioperative complications, and postoperative morbidity and mortality were all ***： Fifty minor and ninety-five major liver resections were performed. The mean intraoperative blood loss was 251 m L, with a transfusion rate of 11.7%. The Pringle maneuver was necessary in 12 patients（8.3%）. The mean duration for parenchymal transection was 51.75 minutes. There were 47 patients（32.4%） with postoperative complications. There is no mortality within 30 days after surgery. CONCLUSIONS： Radiofrequency ablation-assisted liver resection permits both major and minor liver resections with minimal blood loss and without occlusion of hepatic inflow. Furthermore it decreases the need for blood transfusion and reduces morbidity and mortality.

关键词： bleeding complications hepatectomy radiofrequency ablation Pringle maneuver

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Crohn’s disease incidence evolution in North-western Greece is not associated with alteration of NOD2/CARD15 variants

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World Journal of Gastroenterology 2007年第38期13卷 5116-5120页

作者： michael Economou Grigoris Filis Zoi Tsianou John Alamanos Antonios Kogevinas Kostas Masalas Anna petrou Epameinondas V Tsianos 1st Department of Internal Medicine and Hepato- gastroenterology Unit University of Ioannina School of Medicine Ioannina Greece Department of Hygiene and Epidemiology University of Ioannina School of Medicine Ioannina Greece

AIM: To assess the trends in the incidence of inflammatory bowel disease (IBD) over 23 years in the same area and to identify genetic factors related to incidence evolution. METHODS: Patients with IBD arising from North- western Greece were systematically recorded through the 1983-2005 period. Trends in disease incidence and genetic patterns related to CARD15 variants were documented and correlated. RESULTS: A total of 447 patients with IBD were recorded (23.5% Crohn’s disease, 72.7% Ulcerative colitis and 3.8% indeterminate colitis). Mean annual incidence rates of CD and UC were 0.9/100 000 (95% CI 0.1-1.7) and 2.7/100 000 (95% CI 1.7-4.1) inhabitants, respectively. There was a statistically significant increase of CD incidence (P < 0.01) during the study period, in contrast to the UC incidence. There were no statistical differences in CARD15 variants over the study period. CONCLUSION: The incidence of CD in North-western Greece has risen disproportionately to that of UC in the 21st century. This is not related to alterations of genetic background though.

关键词： Inflammatory bowel disease Crohn's disease Epidemiology CARD15

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卫生经济学评价报告标准共识2022(CHEERS 2022):卫生经济学评价报告指导意见更新版

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英国医学杂志中文版 2022年第8期25卷 460-465页

作者： Don Husereau michael Drummond Federico Augustovski Esther de Bekker-Grob Andrew H Briggs Chris Carswell Lisa Caulley Nathorn Chaiyakunapruk Dan Greenberg Elizabeth Loder Josephine Mauskopf C Daniel Mullins Stavros petrou Raoh-Fang Pwu Sophie Staniszewska on behalf of CHEERSISPOR Good Research Practices Task Force 肖月(译) 邱英鹏(译) 史黎炜(译) 张治国(译) 张歆(译) 王海银(译) 翟铁民(译) School of Epidemiology and Public Health University of OttawaOntarioCanada Institute of Health EconomicsAlbertaCanada Centre for Health Economics University of YorkYorkUK Health Technology Assessment and Health Economics Department of the Institute for Clinical Effectiveness and Health Policy(IECS-CONICET) Buenos Aires University of Buenos AiresBuenos Aires CONICET(National Scientific and Technical Research Council)Buenos AiresArgentina Erasmus School of Health Policy&Management Erasmus University RotterdamRotterdamThe Netherlands London School of Hygiene and Tropical Medicine LondonEnglandUK Adis Journals Springer NatureAucklandNew Zealand Department of Otolaryngology-Head&Neck Surgery University of OttawaOntarioCanada Clinical Epidemiology Program and Center for JournalologyOttawa Hospital Research InstituteOntarioCanada Department of EpidemiologyErasmus University Medical Center RotterdamRotterdamThe Netherlands Department of Pharmacotherapy College of PharmacyUniversity of UtahSalt Lake CityUtahUSA Department of Health Policy and Management School of Public HealthFaculty of Health SciencesBen-Gurion University of the NegevBe′er-ShevaIsrael Harvard Medical School BostonMAUSA The BMJLondonUK RTI Health Solutions RTI InternationalResearch Triangle ParkNCUSA School of Pharmacy University of Maryland BaltimoreBaltimoreMDUSA Nuffield Department of Primary Care Health Sciences University of OxfordOxfordUK National Hepatitis C Program Office Ministry of Health and WelfareTaipei CityTaiwanChina Warwick Research in Nursing University of Warwick Warwick Medical SchoolWarwickUK 不详国家卫生健康委卫生发展研究中心北京100043 国家药品和卫生技术综合评估中心北京00043 英国谢菲尔德大学(The University of Sheffield) 谢菲尔德S102TN 华中科技大学武汉430074 哈尔滨医科大学哈尔滨150086 上海市卫生和健康发展研究中心上海200031

卫生经济学评价是对备选行动方案的成本和结果的比较分析。2013年发表的《卫生经济学评价报告标准共识》(CHEERS)提出了卫生经济学评价的特点,确保结果正确阐释,以支持决策制订。2013版CHEERS旨在指导研究报告撰写者准确报告卫生干预和... 详细信息

卫生经济学评价是对备选行动方案的成本和结果的比较分析。2013年发表的《卫生经济学评价报告标准共识》(CHEERS)提出了卫生经济学评价的特点,确保结果正确阐释,以支持决策制订。2013版CHEERS旨在指导研究报告撰写者准确报告卫生干预和对照措施、背景、过程、结果等评价细节,使审稿人理解文章内容,帮助读者使用研究结果。本版共识将取代2013版共识,其更加适用于各类卫生经济学评价,结合学科发展和方法更新的需要,更注重患者、公众等相关利益方的参与。本共识适用多种个体或人群健康干预措施(简单或复杂)在不同政策场景的应用分析,包括医疗服务、公共卫生、教育、社会服务等。本文概要介绍了CHEERS 2022共识中包含的28个检查项及每一个检查项的相关建议。CHEERS 2022共识主要用于指导研究人员撰写拟投递同行评议学术期刊的卫生经济学评价文章,亦可用于期刊编辑和审稿专家对待发表文章的评价。熟悉了解本共识要求,还有助于研究人员规划评价研究。随着决策透明度要求提高,本共识可支持卫生技术评估机构建立评价报告标准。

关键词：期刊编辑审稿专家检查项学术期刊审稿人公共卫生人群健康评价报告

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