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Frey procedure for the treatment of chronic pancreatitis associated with common bile duct stricture

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Hepatobiliary & Pancreatic Diseases International 2013年第6期12卷 637-644页

作者： Lionel Rebibo Thierry Yzet Cyril Cosse Richard Delcenserie Eric Bartoli Jean-Marc Regimbeau Department of Digestive Surgery Amiens university Medical Center the jules verne university of picardie Department of Radiology Amiens university Medical Center and the jules verne university of picardie Department of Digestive SurgeryAmiens university Medical Center and the jules verne university of picardie Department of Gastroenterology Amiens university Medical Center and the jules verne university of picardie

BACKGROUND:The Frey procedure(FP)is the treatment of choice for symptomatic chronic pancreatitis(CP).In cases of biliary stricture,biliary derivation can be performed by choledochoduodenostomy,Roux-en-Y choledochojejunostomy or,more recently,reinsertion of the common bile duct(CBD)into the resection *** objective of the present study was to evaluate the outcomes associated with each of these three types of biliary ***:We retrospectively analyzed demographic,CPrelated,surgical and follow-up data for patients having undergone FP for CP with biliary derivation between 2004and 2012 in our university medical *** primary efficacy endpoint was the rate of CBD stricture *** secondary endpoints were surgical parameters,postoperative complications,postoperative follow-up and the presence of risk factors for secondary CBD ***:Eighty patients underwent surgery for CP during the study *** these,15 patients received biliary derivation with the *** of the FPs(53.3%)were combined with choledochoduodenostomy,4(26.7%)with choledochojejunostomy and 3(20.0%)with reinsertion of the CBD into the resection *** mean operating time was *** complications(73.3%)were recorded,including one major complication(6.7%)that necessitated radiologicallyguided drainage of an abdominal *** mean(range)length of stay was 17 days(8-28)and the median(range)follow-up time was 35.2 months(7.2-95.4).Two patients presented stricture after CBD reinsertion into the resection cavity;one was treated with radiologically-guided dilatation and the other underwent revisional Roux-en-Y *** patients presented alkaline reflux gastritis(37.5%),one(12.5%)cholangitis and one CBD stricture after FP with *** risk factors for secondary CBD stricture were ***:As part of a biliary derivation,the FP gave good *** did not observe any complications specifically relat

关键词： common bile duct stricture chronic pancreatitis Frey procedure pancreatectomy

Multidisciplinary management of Mirizzi syndrome with cholecystobiliary fistula: the value of minimally invasive endoscopic surgery

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Hepatobiliary & Pancreatic Diseases International 2015年第5期14卷 543-547页

作者： Fabien Le Roux Charles Sabbagh Brice Robert Thierry Yzet Laurent Dugue Jean-Paul Joly Jean-Marc Regimbeau Department of Digestive and Oncological Surgery Amiens University Hospital Jules Verne University of Picardie Department of Interventional and Diagnostic Imaging Amiens University Hospital Jules Verne University of Picardie Department of Digestive Surgery Saint-Camille Hospital Department of Hepatogastroenterology Amiens University Hospital Jules Verne University of Picardie

Mirizzi syndrome, a rare complication of gallstones, is defined by obstruction of the main bile duct. This obstruction may worsen and thus result in cholecystobiliary fistula. Surgical management of Mirizzi syndrome is complicated by the presence of inflamed tissue around the hepatic pedicle, making it impossible to distinguish between the main bile duct and the gallbladder. The surgeon＇s first task is to perform subtotal cholecystotomy（from the fundus of the gallbladder to the neck） without trying to locate the cystic duct. In a second step, the gallstones are extracted and the main bile duct is then repaired. In most cases, a T-tube is used to drain the main bile duct, and abdominal drainage is left in place（in case a bile fistula forms）. This study concluded that preoperative drainage of the main bile duct in the treatment of Mirizzi syndrome types II and III is feasible and might help to decrease the postoperative complication rate.

关键词： jaundice Mirizzi syndrome cholecystobiliary fistula endoscopic treatment cholecystectomy T-tube drain

A Real Time Self-Tuning Motion Controller for Mobile Robot Systems

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IEEE/CAA Journal of Automatica Sinica 2019年第1期6卷 84-96页

作者： Mohamed Boukens Abdelkrim Boukabou Mohammed Chadli the Department of Electronics University of Laghouat IEEE the Department of Electronics University of MSB Jijel university of picardie jules verne

This paper proposes an intelligent controller for motion control of robotic systems to obtain high precision tracking without the need for a real-time trial and error *** addition, a new self-tuning algorithm has been developed based on both the ant colony algorithm and a fuzzy system for real-time tuning of controller parameters. Simulations and experiments using a real robot have been addressed to demonstrate the success of the proposed controller and validate the theoretical analysis. Obtained results confirm that the proposed controller ensures robust performance in the presence of disturbances and parametric uncertainties without the need for adjustment of control law parameters by a trial and error method.

关键词： Learning and adaptive systems motion control metaheuristic robust control real-time tuning self-tuning wheeled mobile robot

Scouring of a granular bed by dam break: Experimental study and numerical simulation by a VOF-LPT coupling

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International Journal of Sediment Research 2023年第3期38卷 432-445页

作者： Quyen Thi Le Nguyen Viet Dung Nguyen Patrice Coorevits EPROAD Research Unit University of Picardie Jules Verne IUT of Aisne Hanoi university of Civil Engineering

The first part of the research reported here consists of an experimental campaign to study the scouring of a granular bed(glass beads, sand) induced by a dam break in an open channel. Two configurations are considered: with and without cylinders. In the second part of this study, the volume of fluid method coupled with the shear stress transport turbulent model and the lagrangian particle tracking method is used to simulate the local scour processes. The four-way coupling is realized by considering the drag force and collisions between particles. Using a vortex map and velocity profiles, the flow dynamics and scour pattern can be studied. The current research also focuses on the profiles of the erodible particle bed and the sediment transport rate to study the effects of a cylinder on local scour. The presence of the cylinder increases the experimental erosion depth by up to 42%. It was found that for relatively close particle diameters(2 and 3 mm), a granular bed with larger porosity(larger diameter) erodes the *** and numerically it was found that the center of the granular bed experiences more erosion compared to the channel sides. In the last part of the research, comparisons between the numerical results and the experimental data allowed risk areas to be identified and the roles of porosity,sediment density, and flow dynamics on erosion to be identified.

关键词： Volume of fluid Lagrangian particle tracking Scour Granular bed Cylinder Dam break

Robust Sliding Mode Control Using Adaptive Switching Gain for Induction Motors

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International Journal of Automation and computing 2013年第4期10卷 303-311页

作者： K. Jamoussi L. Chrifi-Alaoui H. Benderradji A. El Hajjaji M. Ouali Laboratory Computer and Embedded Systems National Engineering School University of Sfax Laboratory of Innovative Technology University of Picardie Jules Verne university of M'sila Electrical Engineering Department Laboratory of Modeling Information and Systems University of Picardie Jules Verne France

A robust sliding mode approach combined with a field oriented control （FOC） for induction motor （IM） speed control is presented. The proposed sliding mode control （SMC） design uses an adaptive switching gain and an integrator. This approach guarantees the same robustness and dynamic performance of traditional SMC algorithms. And at the same time, it attenuates the chattering phenomenon, which is the main drawback in actual implementation of this technique. This approach is insensitive to uncertainties and permits to decrease the requirement for the bound of these uncertainties. The stability and robustness of the closed- loop system are proven analytically using the Lyapunov synthesis approach. The proposed method attenuates the effect of both uncertainties and external disturbances. Experimental results are presented to validate the effectiveness and the good performance of the developed method.

关键词： Sliding mode control field oriented control (FOC) practical validation switching gain induction motor.

Procalcitonin and intestinal ischemia:A review of the literature

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World Journal of Gastroenterology 2014年第47期20卷 17773-17778页

作者： Cyril Cosse Charles Sabbagh Sad Kamel Antoine Galmiche Jean-Marc Regimbeau INSERM U1088 Jules Verne University of Picardie80054 AmiensFrance Department of Digestive and Oncological Surgery Amiens University HospitalJules Verne University of PicardiePlace Victor PauchetF-80054 Amiens cedex 01France Clinical Research Center Amiens University Hospital80054 Amiens Cedex 01France Department of Biochemistry Amiens University HospitalJules Verne University of PicardieF-80054 AmiensFrance EA4294 Jules Verne University of PicardieF-80054 AmiensFrance

Intestinal ischemia is common after emergency gastrointestinal or cardiovascular *** present,there are no diagnostic tools for the early diagnosis of intestinal *** the last decade,procalcitonin(PCT)has been suggested as a marker of this ***,we review the use of PCT as a diagnostic tool for intestinal *** reviewers independently searched the Pub Med and EMBASE databases for articles on intestinal ischemia and *** then considered(1)the criteria applicable to preclinical and clinicaldata;and(2)PCT’s predictive value in the diagnosis of intestinal *** quality was rated according to the STAndards for Reporting of Diagnostic *** 1993 and 2014,seven studies(including two preclinical studies and five clinical studies)dealt with the use of PCT to diagnose intestinal ***’s sensitivity,specificity,positive predictive value and negative predictive value ranged between 72%and 100%;68%and 91%;27%and 90%and 81%and 100%,*** area under the receiver operating characteristic curve ranged from 0.77 to *** view of the preclinical and clinical data,we consider that PCT can be used in daily practice as a tool for diagnosing intestinal ischemia.

关键词： Procalcitonin Intestinal Ischemia Diagnosis Review

A branching heuristic for SAT solvers based on complete implication graphs

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Science China(Information Sciences) 2019年第7期62卷 170-182页

作者： Fan XIAO Chu-Min LI Mao LUO Felip MANYA Zhipeng Lü Yu LI School of Computer Science Huazhong University of Science and Technology Modélisation Information et Systèmes (MIS) University of Picardie Jules Verne

The performance of modern conflict-driven clause learning(CDCL) SAT solvers strongly depends on branching heuristics. State-of-the-art branching heuristics, such as variable state independent decaying sum(VSIDS) and learning rate branching(LRB), are computed and maintained by aggregating the occurrences of the variables in conflicts. However, these heuristics are not sufficiently accurate at the beginning of the search because they are based on very few conflicts. We propose the distance branching heuristic, which,given a conflict, constructs a complete implication graph and increments the score of a variable considering the longest distance between the variable and the conflict rather than the simple presence of the variable in the graph. We implemented the proposed distance branching heuristic in Maple LCM and Glucose-3.0, two of the best CDCL SAT solvers, and used the resulting solvers to solve instances from the application and crafted tracks of the 2014 and 2016 SAT competitions and the main track of the 2017 SAT competition. The empirical results demonstrate that using the proposed distance branching heuristic in the initialization phase of Maple LCM and Glucose-3.0 solvers improves performance. The Maple LCM solver with the proposed distance branching heuristic in the initialization phase won the main track of the 2017 SAT competition.

关键词： SAT branching heuristic conflict-driven clause learning implication graph

New insights into diet breadth of polyphagous and oligophagous aphids on two Arabidopsis ecotypes

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Insect Science 2019年第4期26卷 753-769页

作者： Christopher Wattier Amelie Turbant Lisa Sargos-Vallade Jerome Pelloux Christine Rusterucci Anas Cherqui CRRBM (Centre de Ressources Regionales en Biologie Moleculaire) Universite de Picardie Jules Verne Amiens Cedex France EA 3900 BIOPI (Biologie des Plantes et Innovation) Universite de Picardie Jules Verne Amiens Cedex France FRE CNRS 3498 EDYSAN (Ecologie et Dynamique des Systemes Anthropises) University de Picardie Jules Verne Amiens Cedex France

We investigated whether plant ecotype might affect aphid performance and behavioi. The probing behaviors of the polyphagous aphid Myzus persicae and the oligophagous aphid Brevicoryne brassicae on two ecotypes of Arabidopsis thaliana, WS and Col-0 were recorded using the direct current electrical penetration graph method (DC-EPG). Myzus persicae displayed a significant preference for the WS ecotype but was not greatly disturbed on Col-0, while B. brassicae discriminated between the two A. thaliana ecotypes, feeding less on WS than on Col-0. A Principal Component Analysis of aphid probing behavior data recorded on Col-0 and WS ecotypes showed that the one of M. persicae was positively correlated with the phloem ingestion phases while the one of B. brassicae was more related to nonfeeding phase. The survival of the aphid species was followed during early larval stages on the two ecotypes and a significantly higher mortality was observed of B. brassicae neonates compared to M. persicae. Both reared on WS. Moreover, transcriptomic analysis of non infested plant leaves from both ecotypes was monitored and underlined constitutive differences between Col-0 and WS gene expression that might explain the different aphid behaviors. Among a unigene set comprising 39 042 sequences for A. thaliana, 6% were differently expressed affecting, for example, the secondary metabolites and cell wall pathways: two third upregulated in WS and one third upregulated in Col-0. Thus, the "ecotype” variable should be taken into account when setting up a plant-insect experimental research.

关键词： Arabidopsis thaliana Brevicoryne brassicae ecotypes EPG microarray Myzus persicae

Decentralized Networked Control System Design Using Takagi-Sugeno(TS) Fuzzy Approach

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International Journal of Automation and computing 2015年第2期12卷 125-133页

作者： Chedia Latrach Mourad Kchaou Abdelhamid Rabhi Ahmed El Hajjaji Laboratory of Modelisation Information and SystemUniversity of Picardie Jules Verne Electrical Engineering Department National Engineering School of SfaxUniversity of Sfax

This paper proposes a new method for control of continuous large-scale systems where the measures and control functions are distributed on calculating members which can be shared with other applications and connected to digital network *** first, the nonlinear large-scale system is described by a Takagi-Sugeno(TS) fuzzy model. After that, by using a fuzzy LyapunovKrasovskii functional, sufficient conditions of asymptotic stability of the behavior of the decentralized networked control system(DNCS),are developed in terms of linear matrix inequalities(LMIs). Finally, to illustrate the proposed approach, a numerical example and simulation results are presented.

关键词： Continuous large-scale systems decentralized static output feedback fuzzy control networked control systems(NCS) Takagi-Sugeno(T