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1Aetiology and risk factors of ischaemic cholangiopathy after liver transplantation显示文摘Liver transplantation(LT)is the best treatment for endstage hepatic failure,with an excellent survival rates over the last decade.Biliary complications after LT pose a major challenge especially with the increasing number of procured organs after circulatory death.Ischaemic cholangiopathy(IC)is a set of disorders characterized by multiple diffuse strictures affecting the graft biliary system in the absence of hepatic artery thrombosis or stenosis.It commonly presents with cholestasis and cholangitis resulting in higher readmission rates,longer length of stay,repeated therapeutic interventions,and eventually re-transplantation with consequent effects on the patient’s quality of life and increased health care costs.The pathogenesis of IC is unclear and exhibits a higher prevalence with prolonged ischaemia time,donation after circulatory death(DCD),rejection,and cytomegalovirus infection.The majority of IC occurs within 12 mo after LT.Prolonged warm ischaemic times predispose to a profound injury with a subsequently higher prevalence of IC.Biliary complications and IC rates are between 16%and 29%in DCD grafts com-pared to between 3%and 17%in donation after brain death(DBD)grafts.The majority of ischaemic biliary lesions occur within 30 d in DCD compared to 90 d in DBD grafts following transplantation.However,there are many other risk factors for IC that should be considered.The benefits of DCD in expanding the donor pool are hindered by the higher incidence of IC with increased rates of re-transplantation.Careful donor selection and procurement might help to optimize the utilization of DCD grafts.Moustafa Mabrouk Mourad Abdullah Algarni Christos Liossis Simon R Bramhall 2014World Journal of Gastroenterology2014,20,20:16
2Prevalence of type 2 diabetes in Algerian patients with hepatitis C virus infection显示文摘AIM:To investigate the prevalence of,and risk factors for,diabetes mellitus(DM) in Algerian patients with chronic hepatitis C virus(HCV) infection and in a control group.METHODS:A cross-sectional study was undertaken.A total of 416 consecutive patients with viral chronic hepatitis attending the Internal Medicine Department of the University Hospital Center Touhami Benflis in Batna [290 HCV-infected and 126 hepatitis B virus(HBV)-infected patients] were prospectively recruited.RESULTS:The prevalence of DM was higher in HCV-infected patients in comparison with HBV-infected patients(39.1% vs 5%,P < 0.0001).Among patients without cirrhosis,diabetes was more prevalent in HCV-infected patients than in HBV-infected patients(33.5% vs 4.3%,P < 0.0001).Among patients with cirrhosis,diabetes was more prevalent in HCV-infected patients,but the difference was not significant(67.4% vs 20%,P = 0.058).The logistic regression analysis showed that HCV infection [odds ratio(OR) 4.73,95% CI:1.7-13.2],metabolic syndrome(OR 12.35,95% CI:6.18-24.67),family history of diabetes(OR 3.2,95% CI:1.67-6.13) and increased hepatic enzymes(OR 2.22,95% CI:1.1-4.5) were independently related to DM in these patients.CONCLUSION:The high prevalence of diabetes in HCV-infected patients,and its occurrence at early stages of hepatic disease,suggest that screening for glucose abnormalities should be indicated in these patients.Samir Rouabhia Rachid Malek Hocine Bounecer Aoulia Dekaken Fouzia Bendali Amor Mourad Sadelaoud Abderrahmene Benouar 2010World Journal of Gastroenterology2010,16,27:15
3国际胃袖状切除专家共识:基于>12000手术病例的最佳操作指南显示文摘腹腔镜胃袖状切除术(1aparoscopic sleeve gastrectomy,LSG)系相对较新的减重手术方式。因其操作相对简单、治疗肥胖合并疾病及减重效果明显,逐步得以广泛接受。目前美国代谢与减重手术协会将其推荐为肥胖症治疗的单独标准术式。2011年3月25~26日,苏远涛 徐安安 朱江帆 Diaz AA Arvidsson D Baker RS Basso N Bellanger D Boza C El Mourad H France M Gagner M Galvao-Neto M Higa KD Himpens J Hutchinson CM Jacobs M Jorgensen JO Jossart G Lakdawala M Nguyen NT Nocca D Prager G Pomp A Ramos AC Rosenthal RJ Shah S Vix M Wittgrove A Zundel N 2013中国微创外科杂志2013,13,9:12
4铝合金及铝金属基复合材料搅拌摩擦焊接工艺的研究进展显示文摘焊接在汽车、航空航天、机器人、建筑等行业具有重要的作用。这些行业常用非焊接方法制造很多铝合金零部件或系统。然而,由于不可热处理合金的存在、孔隙、凝固和熔融裂纹等因素,铝合金的熔焊具有挑战性。许多制造商采用传统的空气搅拌摩擦焊(FSW)焊接合金和异质材料,也有许多研究报道关于该传统FSW技术在焊接金属和聚合物材料,尤其是铝合金和铝基复合材料方面的缺点。近年来,为了克服传统FSW技术焊接铝合金的缺点,开发出很多其他FSW技术,例如水下搅拌摩擦焊(UFSW)和振动搅拌摩擦焊(VFSW)等。本文综述了近年来铝合金及铝基复合材料(AlMMCs)搅拌摩擦焊接工艺的研究进展,讨论了传统的FSW技术和最先进的FSW工艺参数对铝合金和铝基复合材料焊接质量和强度的影响,并比较了每种方法的优缺点。VFSW在能源效率和经济成本方面具有优势,并可根据应用情况进行多种改进,是焊接铝接头的一种可行的选择。然而,目前对Al MMCs搅拌摩擦焊的研究明显较少,这应给予足够的关注。John VICTOR CHRISTY Abdel-Hamid ISMAIL MOURAD Muhammad M.SHERIF B.SHIVAMURTHY 2021Transactions of Nonferrous Metals Society of China2021,31,11:11
5Thymosin alpha 1:A comprehensive review of the literature显示文摘Thymosin alpha 1 is a peptide naturally occurring in the thymus that has long been recognized for modifying,enhancing,and restoring immune function.Thymosin alpha 1 has been utilized in the treatment of immunocompromised states and malignancies,as an enhancer of vaccine response,and as a means of curbing morbidity and mortality in sepsis and numerous infections.Studies have postulated that thymosin alpha 1 could help improve the outcome in severely ill corona virus disease 2019 patients by repairing damage caused by overactivation of lymphocytic immunity and how thymosin alpha 1 could prevent the excessive activation of T cells.In this review,we discuss key literature on the background knowledge and current clinical uses of thymosin alpha 1.Considering the known biochemical properties including antibacterial and antiviral properties,timehonored applications,and the new promising findings regarding the use of thymosin,we believe that thymosin alpha 1 deserves further investigation into its antiviral properties and possible repurposing as a treatment against severe acute respiratory syndrome coronavirus-2.Asimina Dominari Donald Hathaway III Krunal Pandav Wanessa Matos Sharmi Biswas Gowry Reddy Sindhu Thevuthasan Muhammad Adnan Khan Anoopa Mathew Sarabjot Singh Makkar Madiha Zaidi Michael Maher Mourad Fahem Renato Beas Valeria Castaneda Trissa Paul John Halpern Diana Baralt 2020World Journal of Virology2020,9,5:11
6Bibliometrics: tracking research impact by selecting Lhe appropriate metrics显示文摘Ashok Agarwal Damayanthi Durairajanayagam Sindhuja Tatagari Sandro C Esteves Avi Harlev Ralf Henkel Shubhadeep Roychoudhury Sheryl Homa Nicolas Garrido Puchalt Ranjith Ramasamy Ahmad Majzoub Kim Dao Ly Eva Tvrda Mourad Assidi Kavindra Kesai Reecha Sharma Saleem Banihani Edmund Ko Muhammad Abu-Elmagd Jaime Gosalvez Asher Bashiri 2016Asian Journal of Andrology2016,18,2:10
7Influence of vertical loads on lateral response of pile foundations in sands and clays显示文摘Although the load applied to pile foundations is usually a combination of vertical and lateral components,there have been few investigations on the behavior of piles subjected to combined loadings.Those few studies led to inconsistent results with regard to the effects of vertical loads on the lateral response of piles.A series of three-dimensional(3D) finite differences analyses is conducted to evaluate the influence of vertical loads on the lateral performance of pile foundations.Three idealized sandy and clayey soil profiles are considered:a homogeneous soil layer,a layer with modulus proportional to depth,and two-layered strata.The pile material is modeled as linearly elastic,while the soil is idealized using the Mohr-Coulomb constitutive model with a non-associated flow rule.In order to confirm the findings of this study,soils in some cases are further modeled using more sophisticated models(i.e.CYsoil model for sandy soils and modified Cam-Clay(MCC) model for clayey soils).Numerical results showed that the lateral resistance of the piles does not appear to vary considerably with the vertical load in sandy soil especially at the loosest state.However,the presence of a vertical load on a pile embedded in homogeneous or inhomogeneous clay is detrimental to its lateral capacity,and it is unconservative to design piles in clays assuming that there is no interaction between vertical and lateral loads.Moreover,the current results indicate that the effect of vertical loads on the lateral response of piles embedded in twolayered strata depends on the characteristics of soil not only surrounding the piles but also located beneath their tips.Lassaad Hazzar Mahmoud N.Hussien Mourad Karray 2017Journal of Rock Mechanics and Geotechnical Engineering2017,9,2:7
8Composition and antimicrobial activity of Cistus munbyi essential oil: an endemic plant from Algeria显示文摘The chemical composition and antimicrobial potential of Cistus munbyi essential oil were studied for the first time. GC and GC–MS analysis revealed 48 compounds representing 96.98% of the oil. Terpinen-4-ol(23.75%), meta-Cymene(17.30%), and Sabinene(12.38%)were the major constituents. Antimicrobial activity was evaluated against nine pathogens using the disc diffusion and broth micro-dilution methods. Results show that C.munbyi essential oil possesses strong antimicrobial activity against all strains, regardless if Gram-positive or Gramnegative bacteria, or yeast, with MICs values not exceeding10(mg/ml). In addition to its efficacy, C. munbyi essential oil has an unusual antimicrobial potency which is attributed to its specific chemical composition. Thus, findings presented here suggest that endemic C. munbyi contains a very interesting essential oil that may be valuable in several areas.Fethi Benbelaid Abdelmounaim Khadir Mourad Bendahou Mohamed Amine Abdoune Alain Muselli Jean Costa 2017Journal of Forestry Research2017,28,6:7
9Pancreatitis: Preventing catastrophic haemorrhage显示文摘Pancreatitis represents nearly 3% of acute admissions to general surgery in United Kingdom hospitals and has a mortality of around 1%-7% which increases to around 10%-18% in patients with severe pancreatitis. Patients at greatest risk were those identified to have infected pancreatic necrosis and/or organ failure. This review seeks to highlight the potential vascular complications associated with pancreatitis that despite being relatively uncommon are associated with mortality in the region of 34%-52%. We examine the current evidence base to determine the most appropriate method by which to image and treat pseudo-aneurysms that arise as the result of acute and chronic inflammation of pancreas. We identify how early recognition of the presence of a pseudo-aneurysm can facilitate expedited care in an expert centre of a complex pathology that may require angiographic, percutaneous, endoscopic or surgical intervention to prevent catastrophic haemorrhage.Richard PT Evans Moustafa Mabrouk Mourad Gunraj Pall Simon G Fisher Simon R Bramhall 2017World Journal of Gastroenterology2017,23,30:6
10Update on imaging of Peutz-Jeghers syndrome显示文摘Peutz-Jeghers syndrome(PJS) is a rare, autosomal dominant disease linked to a mutation of the STK 11 gene and is characterized by the development of benign hamartomatous polyps in the gastrointestinal tract in association with a hyperpigmentation on the lips and oral mucosa. Patients affected by PJS have an increased risk of developing gastrointestinal and extra-digestive cancer. Malignancy most commonly occurs in the smallbowel. Extra-intestinal malignancies are mostly breast cancer and gynecological tumors or, to a lesser extent, pancreatic cancer. These polyps are also at risk of acute gastrointestinal bleeding, intussusception and bowel obstruction. Recent guidelines recommend regular smallbowel surveillance to reduce these risks associated with PJS. Small-bowel surveillance allows for the detection of large polyps and the further referral of selected PJS patients for endoscopic enteroscopy or surgery. Video capsule endoscopy, double balloon pushed enteroscopy,multidetector computed tomography and magnetic resonance enteroclysis or enterography, all of which are relatively new techniques, have an important role in the management of patients suffering from PJS. This review illustrates the pathological, clinical and imaging features of small-bowel abnormalities as well as the role and performance of the most recent imaging modalities for the detection and follow-up of PJS patients.Catherine Tomas Philippe Soyer Anthony Dohan Xavier Dray Mourad Boudiaf Christine Hoeffel 2014World Journal of Gastroenterology2014,20,31:5
11A Survey of Bitmap Index Compression Algorithms for Big Data显示文摘With the growing popularity of Internet applications and the widespread use of mobile Internet, Internet traffic has maintained rapid growth over the past two decades. Internet Traffic Archival Systems(ITAS) for packets or flow records have become more and more widely used in network monitoring, network troubleshooting, and user behavior and experience analysis. Among the three key technologies in ITAS, we focus on bitmap index compression algorithm and give a detailed survey in this paper. The current state-of-the-art bitmap index encoding schemes include: BBC, WAH, PLWAH, EWAH, PWAH, CONCISE, COMPAX, VLC, DF-WAH, and VAL-WAH. Based on differences in segmentation, chunking, merge compress, and Near Identical(NI) features, we provide a thorough categorization of the state-of-the-art bitmap index compression algorithms. We also propose some new bitmap index encoding algorithms, such as SECOMPAX, ICX, MASC, and PLWAH+, and present the state diagrams for their encoding algorithms. We then evaluate their CPU and GPU implementations with a real Internet trace from CAIDA. Finally, we summarize and discuss the future direction of bitmap index compression algorithms. Beyond the application in network security and network forensic, bitmap index compression with faster bitwise-logical operations and reduced search space is widely used in analysis in genome data, geographical information system, graph databases, image retrieval, Internet of things, etc. It is expected that bitmap index compression will thrive and be prosperous again in Big Data era since 1980s.Zhen Chen Yuhao Wen Junwei Cao Wenxun Zheng Jiahui Chang Yinjun Wu Ge Ma Mourad Hakmaoui Guodong Peng 2015Tsinghua Science and Technology2015,20,1:5
12The oncofetal protein IMP3 is an indicator of early recurrence and poor outcome in mucoepidermoid carcinoma of salivary glands显示文摘Objective: Mucoepidermoid carcinoma(MEC) is the most common primary malignancy of the salivary glands. Insulin-like growth factor-II m RNA-binding protein-3(IMP3) is an important prognostic factor in some cancers and a tool that differentiates between benign and malignant pancreatic lesions. This study aimed to identify a relationship between the expression of IMP3 and the outcome of salivary gland MEC, as well as to differentiate MEC from pleomorphic adenoma(PA).Methods: Tissue specimens from 70 cases of salivary gland MEC, 40 cases of PA, and 10 cases with normal salivary gland were examined immunohistochemically for IMP3. The association among the expression of IMP3, clinicopathological characteristics and patient's survival was assessed.Results: IMP3 was present in 51.4% of MEC but absent in PA and normal salivary gland tissues. IMP3 expression was associated with age > 60 years, submandibular gland tumors, tumor size > 4 cm, high-grade tumors, lymph node metastasis, involvement of surgical margins, perineural invasion, distant metastasis, advanced TNM stage, tumor relapse, and death(P<0.05). Increased expression of IMP3, tumors of the submandibular gland, and lymph node metastasis were independent prognostic factors of disease-free survival(DFS). In addition, IMP3 was a strong predictor of overall survival(OS) together with distant metastasis and intermediate and high-grade tumors.Conclusions: IMP3 expression is highly important in evaluating the outcome of MEC. IMP3 can be used to differentiate MEC from PA of salivary glands.Mohamed R.Elshafey Rehab A.Ahmed Mohamed I Mourad Essam T.Gaballah 2016Cancer Biology & Medicine2016,13,2:5
13Physical modeling and visualization of soil liquefaction under high confining stress显示文摘The mechanisms of seismically-induced liquefaction of granular soils under high confining stresses are still not fully understood. Evaluation of these mechanisms is generally based on extrapolation of observed behavior at shallow depths.Three centrifuge model tests were conducted at RPI's experimental facility to investigate the effects of confining stresses on the dynamic response ora deep horizontal deposit of saturated sand. Liquefaction was observed at high confining stresses in each of the tests. A system identification procedure was used to estimate the associated shear strain and stress time histories.These histories revealed a response marked by shear strength degradation and dilative patterns. The recorded accelerations and pore pressures were employed to generate visual animations of the models. These visualizations revealed a liquefaction front traveling downward and leading to large shear strains and isolation of upper soil layers.Lenart González Tarek Abdoun Mourad Zeghal Vivian Kallou Michael K. Sharp 2005Earthquake Engineering and Engineering Vibration2005,4,1:4
14External Bacterial Flora and Antimicrobial Susceptibility Patterns of Staphylococcus spp. and Pseudomonas spp. Isolated from Two Household Cockroaches, Blattella germanica and Blatta orientalis显示文摘研究被执行估计在 Tebessa (东北阿尔及利亚) 从家庭收集的二只国内蟑螂(Blattella germanica 和 Blatta orientalis ) 的外部细菌的植物群的流行。三个主要的细菌的组是有教养的(全部氧气, enterobacteria,和 staphylococci ) 从蟑螂,和抗菌素的 14 个标本,危险性被测试因为葡萄球菌和 Pseudomonas 孤立。Culturing 证明来自不同家庭的蟑螂的全部的细菌的负担是可比较的(P < 0.001 ) 并且 enterobacteria 是昆虫表面的占优势的殖民者,与细菌的负担(2.1 ㄠ′吗??MENASRIA Taha TINE Samir MAHCENE Djaouida BENAMMAR Leyla MEGRI Rochdi BOUKOUCHA Mourad DEBABZA Manel 2015Biomedical and Environmental Sciences2015,28,4:4
15对基于拼接干涉术的同步辐射镜测量技术的研究显示文摘随着同步辐射光源和自由电子激光器相关技术的发展和光束质量的提升,对用于转递和聚焦光束能量的X光反射镜的指标要求也逐渐提高。为避免引入额外的波前误差,反射镜面形高度误差均方根值的要求已逼近至亚纳米量级。如此苛刻的面形要求对X光反射镜的测量工作带来了极大的困难和挑战。除了在各国同步辐射光源得到广泛使用的长程轮廓仪等基于角度测量的轮廓扫描仪器之外,基于激光干涉仪的拼接干涉技术也发展为测量同步辐射镜的一种有效手段。文中主要介绍了近期笔者等为测量X光反射镜而开发的拼接干涉平台。利用这一测量平台,研究了在不同的拼接参数下的多种拼接模式。着重讲述了其中纯软件拼接模式的基本原理和实际测量。用实测结果与不同测量仪器和不同研究机构的结果进行比对,验证了拼接干涉测量用于检测同步辐射镜的有效性,并展示了此拼接平台的测量表现。根据所得的测量数据看来,使用纯软件拼接模式来测量X光平面反射镜时,测量重复性的均方差值可以达到0.1 nm左右;而测量X光双曲柱面镜时(曲率半径的变化范围为50~130 m),测量重复性的均方差值为0.2~0.3 nm。此结果基本满足平面和接近平面(曲率半径大于50 m)的同步辐射镜常规检测和为确定性加工提供面形反馈的需要。黄磊 王添翼 Mourad Idir 2020红外与激光工程2020,49,3:4
16Pathology and diagnostic criteria of gastrointestinal stromal tumors (GISTs): a review显示文摘Markku Miettinen Mourad Majidi Jerzy Lasota 2003European Journal of Cancer2003,,:3
17并行进化算法及其在航空工程优化问题中的应用(英文)显示文摘提出了用于加速气动力形状优化过程的分级型Nash基因算法.分级型算法可以看作是并行基因算法的特例,后者使用了互相联系但独立进化的子群的概念.本文在并行基因算法中引入多层分级拓扑结构以提高算法的收敛性.这种拓扑结构混合使用不同精度的模型,低精度模型用于探索搜索空间,高精度模型用于对准优解进行提纯.将此方法与Nash博弈相结合,构造了多目标优化算法,并应用于气动力优化问题.针对喷管反设计问题与多段翼型高升力优化问题,在计算机集群并行环境下进行了计算,结果表明本文的算法具有较高的加速收敛特性.王江峰 Periaux Jacques Sefrioui Mourad 2003中国科学技术大学学报2003,33,4:3
18Hybrid immunizing solution for job recommender system显示文摘Shaha AL-OTAIBI Mourad YKHLEF 2017Frontiers of Computer Science2017,11,3:3
19Decentralized Networked Control System Design Using Takagi-Sugeno(TS) Fuzzy Approach显示文摘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 communications.At 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.Chedia Latrach Mourad Kchaou Abdelhamid Rabhi Ahmed El Hajjaji 2015International Journal of Automation and computing2015,12,2:3
20Video head impulse test (vHIT) in migraine dizziness显示文摘Background and objective: Migraine is an extremely prevalent primary headache disorder that frequently associates parallel symptoms such as dizziness, tinnitus and hearing loss. Our aim is to investigate differences in video head impulse(vHIT) results with patients suffering from vestibular migraine(VM) and healthy people, taking into consideration mean values of vestibule ocular reflex(VOR) gain, occurrence of the compensatory saccades latency and amplitude. According to the results, determine the usefulness of vHIT in vestibular migraine diagnostics.Methods: A total number of 120 subjects were enrolled in the study, 80 of them were vestibular migraine patients(VM),while the other 40 were a control group of age matched healthy subjects. History was taking during the evaluation;videonystagmography and the video head impulse test were done.Results: The rate of saccades is much more higher in the VM group compared to the healthy subjects group, only 7.5% of the VM group showed a low VOR gain with compensatory saccades denoting a vestibular deficit.Conclusion: The refixation saccades are an important sign that could underlie different vestibular problems. vHIT result can contribute to the completion of full mosaic of vestibular migraine diagnostics.Mayada ElSherif Mohamed Ihab Reda Horeya Saadallah Mona Mourad 2018Journal of Otology2018,13,2:3
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