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Influence of Cutting and Geometrical Parameters on the Cutting Force in Milling

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Engineering（科研） 2010年第10期2卷 751-761页

作者： Hedi Yangui Bacem Zghal Amir Kessentini Gael Chevallier alain riviere Mohamed Haddar Chafik Karra Unite de Mecanique Modélisation et Production(U2MP)Ecole Nationale d’Ingénieurs de Sfax(E.N.I.S.)route soukra km 4 Sfax–TUNISIEFrance Laboratoire d’Ingénierie des Structures Mécanique et de Matériaux(LISMMA) Institut Supérieur de Mécanique de Paris(SUPMECA)3 rue Fernand Hainaut93407 cedex Saint ouenParis–France

This paper presents a numerical modelling of the dynamic behaviour of the Machine-Tool-Part system (MOP) in milling. The numerical study of such complex structure requires the use of sophisticated method like finite elements one. Simulation is employed to predict cutting forces and dynamic response of Machine-Tool-Part system (MOP) during end-milling operation. Finally, spectral analysis is presented to see the influence of feed direction in the vibration.

关键词： Milling Modelling Cutting Force Finite Element

A Discontinuous Galerkin Method for Blood Flow and Solute Transport in One-Dimensional Vessel Networks

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Communications on Applied Mathematics and Computation 2022年第2期4卷 500-529页

作者： Rami Masri Charles Puelz Beatrice riviere Department of Computational and Applied Mathematics Rice UniversityHoustonTX 77005USA Department of Pediatrics-Cardiology Baylor College of MedicineHoustonTX 77030USA

This paper formulates an efficient numerical method for solving the convection diffusion solute transport equations coupled to blood flow equations in vessel *** reduced coupled model describes the variations of vessel cross-sectional area,radially averaged blood momentum and solute concentration in large vessel *** the discretization of the reduced transport equation,we combine an interior penalty discontinuous Galerkin method in space with a novel locally implicit time stepping *** stability and the convergence are *** results show the impact of the choice for the steady-state axial velocity profile on the numerical solutions in a fifty-five vessel network with physiological boundary data.

关键词： Reduced models Blood flow Solute transport Coriolis coefficient Vessel networks Junction conditions Locally implicit

Cytomegalovirus infection in liver transplant recipients: Updates on clinical management

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World Journal of Gastroenterology 2014年第31期20卷 10658-10667页

作者： Jasmine riviere Marcelin Elena Beam Raymund R Razonable Department of Medicine Mayo ClinicRochester MN 55905 United States Division of Infectious Diseases Department of Medicine Mayo ClinicRochester MN 55905 United States William Jvon Leibig Transplant Center Mayo ClinicRochester MN 55905 United States

Cytomegalovirus(CMV) infection is a common complication after liver transplantation, and it is associated with multiple direct and indirect effects. Management of CMV infection and disease has evolved over the years,and clinical guidelines have been recently *** antiviral prophylaxis and a pre-emptive treatment strategy are options for prevention. A currentlyrecruiting randomized clinical trial is comparing the efficacy and safety of the two prevention strategies in the highest risk D+R- liver recipients. Drug-resistant CMV infection remains uncommon but is now increasing in incidence. This highlights the currently limited therapeutic options, and the need for novel drug *** and antiviral drugs with novel mechanisms of action are being investigated, including letermovir(AIC246) and brincidofovir(CMX001). This article reviews the current state of CMV management after liver transplantation, including the updated practice guidelines, and summarizes the data on investigational drugs and vaccines in clinical development.

关键词： Cytomegalovirus Liver transplantation Valganciclovir Prophylaxis Treatment Resistance Investigational Letermovir Brincidofovir

Sexual health and fertility for individuals with inflammatory bowel disease

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World Journal of Gastroenterology 2019年第36期25卷 5423-5433页

作者： Romain Leenhardt Pauline riviere Patrick Papazian Isabelle Nion-Larmurier Guillaume Girard David Laharie Philippe Marteau Sorbonne Universite Hepatologie Gastroenterologie et Saint Antoine IBD NeTwork APHP Hopital St Antoine Paris 75012 Ile-de-France France CHU de Bordeaux Hopital Haut-Leveque Service d'Hepatogastroenterologie CMC Magellan Bordeaux 33604 Pessac France Hopital Bichat Service des maladies infectieuses et tropicales APHP Paris 75018 France Service de gynecologie obstetrique Hopital Armand Trousseau Paris 75012 Ile-de-France France

The impact of a chronic disease such as inflammatory bowel disease (IBD) on sexual functioning and body image can significantly impair the quality of life of patients. This review considers the sexual and fertility aspects of IBD patients and their daily management. Modern IBD healthcare management should include appropriate communication on sexuality and consider psychological, physiological, and biological issues. Patients with IBD have less children than the general population, and voluntary childlessness is frequent. The most influential factors reported by IBD patients who experience fertility alteration are psychological and surgery-related problems. Pregnancy is a major concern for patients, and any pregnancy for IBD patients should be closely followed-up to keep the chronic disease in a quiescent state. Preconceptional consultation is of great help.

关键词： Inflammatory bowel disease Crohn’s disease Ulcerative colitis Fertility Pregnancy Sexuality

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航空燃油污染在三通管路的分布试验

科学技术与工程 2013年第11期21卷 3043-3047,3063页

作者：蔡伟周洲 Nicolas riviere 西北工业大学航空学院西安710072

航空燃油污染对于整个燃油系统故障有举足轻重的地位。燃油流量以及质量是实时监测的重要参数。对于三支路交叉管道的燃油污染分布情况,设计了以蒸馏水为模拟介质,通过pH测定浓度进而得到流量的系列试验。单直管道的试验表明所选方法是... 详细信息

航空燃油污染对于整个燃油系统故障有举足轻重的地位。燃油流量以及质量是实时监测的重要参数。对于三支路交叉管道的燃油污染分布情况,设计了以蒸馏水为模拟介质,通过pH测定浓度进而得到流量的系列试验。单直管道的试验表明所选方法是可行的,流量和横向扩散系数都与理论保持一致。三支路交叉管道的试验则证明交叉混合区流场的三维湍流特性,以及已污染和未污染燃油之间的分界线的动态不确定性;同时可模拟出流向扩散、横向扩散以及纵向扩散的进程。

关键词：航空燃油流场扩散污染交又

Perioperative impact of liver venous deprivation compared with portal venous embolization in patients undergoing right hepatectomy: preliminary results from the pioneer center

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Hepatobiliary Surgery and Nutrition 2019年第4期8卷 329-337页

作者： Fabrizio Panaro Fabio Giannone Benjamin riviere Olivia Sgarbura Caterina Cusumano Emmanuel Deshayes Francis Navarro Boris Guiu Francois Quenet Division of HBP Surgery and Transplantation Department of SurgerySt.Eloi Hospital2Department of PathologyGui de Celiac HospitalMontpellier University Hospital-School of Medicine34090 MontpellierFrance Department of Surgical Oncology 4Department of Nuclear MedicineCancer Institute of Montpellier(ICM)20834298 MontpellierFrance Division of Interventional Radiology Department of RadiologySt.Eloi HospitalMontpellier University Hospital-School of Medicine34090 MontpellierFrance

Background: Preoperative portal vein embolization (PVE) is currently the standard technique used routinely to increase the size of the future remnant liver (FRL) before major hepatectomies. The degree of hypertrophy (DH) is approximatively 10% and requires on average six weeks. ALPPS is faster and achieves a good DH but with a higher morbidity and mortality. One method recently proposed to increase the FRL is liver venous deprivation (LVD), but its clinical and operative impact is still unknown. The aim of this study is to compare intra- and postoperative morbidity/mortality and the histological evaluation of the liver parenchyma between PVE and LVD in patients undergoing anatomic right hepatectomy. Methods: Fifty-three consecutive patients undergoing PVE and LVD before a major hepatectomy were retrospectively analysed between 2015 and 2017. In order to reduce the bias, only potential standard right hepatectomies were selected. Surgical resections and the radiologic procedures were performed by the same Institution. Intra-operative parameters (transfusions, perfusions, bleeding, operative time), postoperative complications (Clavien-Dindo and ISGLS criteria), and histological findings were compared. Results: To induce FRL growth 16 patients underwent PVE and 13 LVD. One patient of the PVE group was not resected due to peritoneal metastases. Surgery was performed for hepatocellular carcinoma (PVE =9, LVD=3), metastases (PVE =5, LVD =10), or others diseases (PVE =2, LVD =0). Per- and post-operative morbidity/mortality rates after PVE and LVD procedures were null. No differences between the two groups were found in terms of intraoperative bleeding (median: 550 vs. 1,200 mL;P=0.36), hepatic pedicle clamping (5 vs. 3 patients;P=0.69), intraoperative red blood cells transfusions (median: 622 vs. 594;P=0.42) and operative time (median:270 vs. 330 min;P=0.34). Post-operative course was similar when comparing both medical and surgical complications in the two arms (PVE n=7, L

关键词： Liver venous deprivation (LVD) portal embolization liver failure hepatectomy

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时移地震在中国海上气田的应用

石油地球物理勘探 2011年第2期46卷 285-292,162页

作者：周家雄谢玉洪陈志宏 Martin riviere 刘薇薇孙月成中国地质大学(武汉)资源学院湖北武汉430074 中海石油(中国)有限公司湛江分公司广东湛江524057 BP中国勘探开发公司广东深圳518067

本文介绍了崖城13-1、东方1-1两个海上气田时移地震的应用与实践。文章通过介绍岩石物理实验、时移地震资料处理、综合解释等方面的研究与分析,对崖城13-1气田的生产动用区块、剩余气分布进行了分析和预测,并在此基础上对东方1-1气田进... 详细信息

本文介绍了崖城13-1、东方1-1两个海上气田时移地震的应用与实践。文章通过介绍岩石物理实验、时移地震资料处理、综合解释等方面的研究与分析,对崖城13-1气田的生产动用区块、剩余气分布进行了分析和预测,并在此基础上对东方1-1气田进行了系统的时移地震综合研究。在东方1-1气田的时移地震研究过程中,克服了多批次地质资料的匹配处理、无法直接用井资料进行地震动态标定、气田开发导致开发区块压力下降而各气层组气水边界基本不变等难题,取得了很好的研究成果,研究成果已被应用于气田开发调整方案的设计。开发调整井资料显示东方1-1气田时移地震预测结果正确,可使气田提高一定的采收率。

关键词：崖城13-1气田东方1-1气田岩石物理实验时移地震数据处理时移地震数据解释

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芳基硅烷、锗烷、锡烷的合成与表征

化学研究与应用 2003年第1期15卷 93-94页

作者：钟劲茅 R.Jacques A.Castel P.riviere 南昌航空工业学院环化系 Heterochimie Fondamentale et Appliquee UMR n~05069

In this paper,aryl silane,germane,stannane were synthesized from 1,4dibromobenzene and organometallic dichloride and characterized by 1HNMR spectra and mass spectra.

关键词：芳基硅烷锗烷锡烷中间体合成表征

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社区媒体颠覆企业社会责任定义

现代广告 2010年第11期 22-23页

作者： Francois de riviere

由社区媒体驱动的人类社会责任的新市场，意味着仁慈的行为、环保以及正直的商业行为，与其试图通过社区媒体将人们聚集到公司的事业上来。

关键词：企业社会责任媒体社区定义商业行为新市场事业公司