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2855篇 您的检索式:作者名="Roch"
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1Charge Transport in Disordered Graphene-Based Low Dimensional Materials显示文摘Two-dimensional graphene,carbon nanotubes,and graphene nanoribbons represent a novel class of low dimensional materials that could serve as building blocks for future carbon-based nanoelectronics.Although these systems share a similar underlying electronic structure,whose exact details depend on confi nement effects,crucial differences emerge when disorder comes into play.In this review,we consider the transport properties of these materials,with particular emphasis on the case of graphene nanoribbons.After summarizing the electronic and transport properties of defect-free systems,we focus on the effects of a model disorder potential(Anderson-type),and illustrate how transport properties are sensitive to the underlying symmetry.We provide analytical expressions for the elastic mean free path of carbon nanotubes and graphene nanoribbons,and discuss the onset of weak and strong localization regimes,which are genuinely dependent on the transport dimensionality.We also consider the effects of edge disorder and roughness for graphene nanoribbons in relation to their armchair or zigzag orientation.Alessandro Cresti Norbert Nemec Blanca Biel Gabriel Niebler François Triozon Gianaurelio Cuniberti Stephan Roche 2008Nano Research2008,1,5:10
2通过业余时间运动的中老年的运动心电图:100次运动试验足以确定一个无症状心肌缺血的心脏事件风险显示文摘运动心电图在预防运动员心脏事件方面的重要性一直存在争议。为了确定运动心电图中无症状心肌缺血(silent myocardial ischemia,SMI)的频率及运动心电图与冠状动脉造影评估结果和潜在可预防的心脏事件的关系。Hupin等纳入2011-2014年就诊于Saint-Etienne大学医院运动医学科年龄≥35岁的无症状业余运动员,进行前瞻性队列研究。刘青 叶鹏 Hupin D Edouard P Oriol M Laukkanen J Abraham P Doutreleau S Guy JM CarréF Barthélémy JC Roche F Chatard JC 2018中华高血压杂志2018,26,4:6
3本体术语学:把术语和知识本体统一起来的范式显示文摘术语在现代知识社会中肩负着基础性的作用,现代社会信息技术的应用对术语学理论研究提出新的挑战。信息技术要求术语具有其计算机化的代表物,而旧有的普通术语学理论满足不了现代术语实践的状况;西方的术语学理论家在术语学与信息技术、术语学与知识工程相互碰撞的实践中,构想了'本体术语学'这一术语学理论的新范式,这一构想在具体的术语学实践中产生了积极的成果。文章旨在介绍和分析'本体术语学'的理论渊源和学术成果。邱碧华(编译) christophe roche 2016中国科技术语2016,18,3:6
4Estimation of intra-operator variability in perfusion parameter measurements using DCE-US显示文摘AIM:To investigate intra-operator variability of semiquantitative perfusion parameters using dynamic contrast-enhanced ultrasonography(DCE-US),following bolus injections of SonoVue.METHODS:The in vitro experiments were conducted using three in-house sets up based on pumping a fluid through a phantom placed in a water tank.In the in vivo experiments,B16F10 melanoma cells were xenografted to five nude mice.Both in vitro and in vivo,images were acquired following bolus injections of the ultrasound contrast agent SonoVue(Bracco,Milan,Italy) and using a Toshiba Aplio ultrasound scanner connected to a 2.9-5.8 MHz linear transducer(PZT,PLT 604AT probe)(Toshiba,Japan) allowing harmonic imaging('Vascular Recognition Imaging') involving linear raw data.A mathematical model based on the dye-dilution theory was developed by the Gustave Roussy Institute,Villejuif,France and used to evaluate seven perfusion parameters from time-intensity curves.Intra-operator variability analyses were based on determining perfusion parameter coefficients of variation(CV).RESULTS:In vitro,different volumes of SonoVue were tested with the three phantoms:intra-operator variability was found to range from 2.33% to 23.72%.In vivo,experiments were performed on tumor tissues and perfusion parameters exhibited values ranging from 1.48% to 29.97%.In addition,the area under the curve(AUC) and the area under the wash-out(AUWO) were two of the parameters of great interest since throughout in vitro and in vivo experiments their variability was lower than 15.79%.CONCLUSION:AUC and AUWO appear to be the most reliable parameters for assessing tumor perfusion using DCE-US as they exhibited the lowest CV values.Marianne Gauthier Ingrid Leguerney Jessie Thalmensi Mohamed Chebil Sarah Parisot Pierre Peronneau Alain Roche Nathalie Lassau 2011World Journal of Radiology2011,3,3:6
5城市化进程对自然水系功能的影响显示文摘城市化进程中城市水文系统受到严重影响,致使现阶段我国城市中自然水文循环系统和以供排水为重心的城市人工侧支水循环系统之间存在尖锐矛盾。如何协调两者之间的关系,实现流域内城市地区人工侧支水循环系统与自然水文循环系统之间的良性互动,从而促进城市系统中经济、社会和环境协调可持续发展成为亟待解决的问题。姚文涛 王静 Roch 葛琳 谭海樵 2010地域研究与开发2010,29,6:6
6Season of the year influences infection rates following total hip arthroplasty显示文摘AIM To research the influence of season of the year on periprosthetic joint infections.METHODS We conducted a retrospective review of the entire Medicare files from 2005 to 2014. Seasons were classified as spring, summer, fall or winter. Regional variations were accounted for by dividing patients into four geographic regions as per the United States Census Bureau(Northeast, Midwest, West and South). Acute postoperative infection and deep periprosthetic infections within 90 d after surgery were tracked. RESULTS In all regions, winter had the highest incidence of periprosthetic infections(mean 0.98%, SD 0.1%) and was significantly higher than other seasons in the Midwest, South and West(P < 0.05 for all) but not the Northeast(P = 0.358). Acute postoperative infection rates were more frequent in the summer and were significantly affected by season of the year in the West.CONCLUSION Season of the year is a risk factor for periprosthetic joint infection following total hip arthroplasty(THA). Understanding the influence of season on outcomes following THA is essential when risk-stratifying patients to optimize outcomes and reduce episode of care costs.Samuel Rosas Alvin C Ong Leonard T Buller Karim G Sabeh Tsun yee Law Martin W Roche Victor H Hernandez 2017World Journal of Orthopedics2017,8,12:4
7Atrial tachyarrhythmia in adult congenital heart disease显示文摘The adult congenital heart disease(ACHD) population continues to grow and most cardiologists, emergency room physicians and family doctors will intermittently come into contact with these patients. Oftentimes this may be in the setting of a presentation with atrial tachyarrhythmia; one of the commonest late complications of ACHD and problem with potentially serious implications. Providing appropriate initial care and ongoing management of atrial tachyarrhythmia in ACHD patients requires a degree of specialist knowledge and an awareness of certain key issues. In ACHD, atrial tachyarrhythmia is usual y related to the abnormal anatomy of the underlying heart defect and often occurs as a result of surgical scar or a consequence of residual hemodynamic or electrical disturbances. Arrhythmias significantly increase mortality and morbidity in ACHD and are the most frequent reason for ACHD hospitalization. Intra-atrial reentrant tachycardia and atrial fibrillation are the most prevalent type of arrhythmia in this patient group. In hemodynamically unstable patients, urgent cardioversion is required. Acute management of the stable patient includes anticoagulation, rate control, and electrical or pharmacological cardioversion. In ACHD, rhythm control is the preferred management strategy and can often be achieved. However, in the long-term, medication side-effects can prove problematic. Electrophysiology studies and catheter ablation are important treatments modalities and in certain cases, surgical or percutaneous treatment of the underlying cardiac defect has a role. ACHD patients, especially those with complex CHD, are at increased risk of thromboembolic events and anticoagulation is usually required. Female ACHD patients of child bearing age may wish to pursue pregnancies. The risk of atrial arrhythmias is increased during pregnancy and management of atrial tachyarrhythmia during pregnancy needs specific consideration.Arsha Karbassi Krishnakumar Nair Louise Harris Rachel M Wald S Lucy Roche 2017World Journal of Cardiology2017,9,6:3
8Diagnostic accuracy of FibroScan and comparison to liver fibrosis biomarkers in chronic viral hepatitis: A multicenter prospective study (the FIBROSTIC study)显示文摘Francoise Degos Paul Perez Bruno Roche Amel Mahmoudi Julien Asselineau Hélène Voitot Pierre Bedossa 2010Journal of Hepatology2010,,6:3
9PM_(2.5) source apportionment in a French urban coastal site under steelworks emission influences using constrained non-negative matrix factorization receptor model显示文摘The constrained weighted-non-negative matrix factorization(CW-NMF) hybrid receptor model was applied to study the influence of steelmaking activities on PM_(2.5)(particulate matter with equivalent aerodynamic diameter less than 2.5 μm) composition in Dunkerque,Northern France. Semi-diurnal PM_(2.5)samples were collected using a high volume sampler in winter 2010 and spring 2011 and were analyzed for trace metals, water-soluble ions, and total carbon using inductively coupled plasma – atomic emission spectrometry(ICP-AES),ICP- mass spectrometry(ICP-MS), ionic chromatography and micro elemental carbon analyzer. The elemental composition shows that NO_3^-, SO_4^(2-), NH_4^+and total carbon are the main PM_(2.5)constituents. Trace metals data were interpreted using concentration roses and both influences of integrated steelworks and electric steel plant were evidenced. The distinction between the two sources is made possible by the use Zn/Fe and Zn/Mn diagnostic ratios. Moreover Rb/Cr, Pb/Cr and Cu/Cd combination ratio are proposed to distinguish the ISW-sintering stack from the ISW-fugitive emissions. The a priori knowledge on the influencing source was introduced in the CW-NMF to guide the calculation. Eleven source profiles with various contributions were identified: 8 are characteristics of coastal urban background site profiles and 3 are related to the steelmaking activities. Between them,secondary nitrates, secondary sulfates and combustion profiles give the highest contributions and account for 93% of the PM_(2.5)concentration. The steelwork facilities contribute in about 2%of the total PM_(2.5)concentration and appear to be the main source of Cr, Cu, Fe, Mn, Zn.Adib Kfoury Frederic Ledoux Cloe Roche Gilles Delmaire Gilles Roussel Dominique Courcot 2016Journal of Environmental Sciences2016,28,2:3
10Priorities and needs for research on urban interventions targeting vector-borne diseases: rapid review of scoping and systematic reviews显示文摘This paper highlights the critical importance of evidence on vector-borne diseases(VBD)prevention and control interventions in urban settings when assessing current and future needs,with a view to setting policy priorities that promote inclusive and equitable urban health services.Research should produce knowledge about policies and interventions that are intended to control and prevent VBDs at the population level and to reduce inequities.Such interventions include policy,program,and resource distribution approaches that address the social determinants of health and exert influence at organizational and system levels.Clara Bermudez-Tamayo Olive Mukamana Mabel Carabali Lyda Osorio Florence Fournet Kounbobr Roch Dabiré Celina Turchi Marteli Adolfo Contreras Valéry Ridde 2016Infectious Diseases of Poverty2016,5,1:3
11Green and competitive? An empirical test of the mediating role of environmental innovation strategy显示文摘Yousef Eiadat Aidan Kelly Frank Roche Hussein Eyadat 2007Journal of World Business2007,,2:2
12Current management and perspectives for HCV recurrence after liver transplantation显示文摘Audrey Coilly Bruno Roche Didier Samuel 2013Liver Int2013,,:2
13Predicting a chaotic time series using a fuzzy neural network显示文摘Maguire L P Roche B McGinnity T M L J McDaid 1998Information Sciences1998,112,:2
14Safety and efficacy of protease inhibitors to treat hepatitis C after liver transplantation: A multicenter experience显示文摘Audrey Coilly Bruno Roche Jér?me Dumortier Vincent Leroy Danielle Botta-Fridlund Sylvie Radenne Georges-Philippe Pageaux Si-Nafaa Si-Ahmed Olivier Guillaud Teresa Maria Antonini Stéphanie Ha?m-Boukobza Anne-Marie Roque-Afonso Didier Samuel Jean-Charles Du 2014Journal of Hepatology2014,,1:2
15Hepatocellular Carcinoma Is Associated With an Increased Risk of Hepatitis B Virus Recurrence After Liver Transplantation显示文摘Luciana C. Faria Michelle Gigou Anne M. Roque–Afonso Mylene Sebagh Bruno Roche Guillaume Fallot Teresa C.A. Ferrari Catherine Guettier Elisabeth Dussaix Denis Castaing Christian Brechot Didier Samuel 2008Gastroenterology2008,,7:2
16Review: Improving our knowledge of male mosquito biology in relation to genetic control programmes显示文摘Rosemary Susan Lees Bart Knols Romeo Bellini Mark Q. Benedict Ambicadutt Bheecarry Hervé Christophe Bossin Dave D. Chadee Jacques Charlwood Roch K. Dabiré Luc Djogbenou Alexander Egyir-Yawson René Gato Louis Clément Gouagna Mo’awia Mukhtar Hassan Shakil A 2013Acta Tropica2013,,:2
17Systemically administered human bone marrow-derived mesenchymal stem home into peripheral organs but do not induce neuroprotective effects in the MCAo-mouse model for cerebral ischemia显示文摘Barbara Steiner Manfred Roch Nikola Holtkamp Andreas Kurtz 2012Neuroscience Letters2012,,1:2
18Trans-catheter arterial chemoembolization as first-line treatment for hepatic metastases from endocrine tumors显示文摘Alain Roche Baragur V. Girish Thierry de Baère Eric Baudin Valérie Boige Dominique Elias Philippe Lasser Martin Schlumberger Michel Ducreux 2003European Radiology2003,,1:2
19Combination strategies to enhance antitumor ADCC显示文摘Holbrook E Kohrt Roch Houot Auré lien Marabelle Hearn Jay Cho Keren Osman Matthew Goldstein Ronald Levy Joshua Brody 2012Immunotherapy2012,,5:2
20Developments in nonholonomic control systems显示文摘KOMANOVSKY H MACCLAM ROCH N H 1995IEEE Control Systems Magazine1995,15,6:2
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