检索结果-南通市图书馆

Modelling the monthly hydrological balance using Soil and Water Assessment Tool(SWAT)model:A case study of the Wadi Mina upstream watershed

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Groundwater Science and Engineering 2024年第2期12卷 161-177页

作者： Hanane Mebarki Noureddine Maref mohammed El-amine Dris Civil Engineering and Environmental Laboratory(LGCE) University of Djillali LiabèsFaculty of TechnologyHydraulics departmentBen M'Hidi districtP.O.Box 8922000Sidi Bel AbbèsAlgeria.

Modelling the hydrological balance in semi-arid zones is essential for effective water resource management,encompassing both surface water and *** study aims to model the monthly hydrological water cycle in the Wadi Mina upstream watershed(northwest Algeria)by applying the Soil and Water Assessment Tool(SWAT)hydrological *** modelling integrates spatial data such as the Digital Elevation Model(DEM),land use,soil types and various meteorological parameters including precipitation,maximum and minimum temperatures,relative humidity,solar radiation and wind *** SWAT model was calibrated and validated using data from January 2012 to December 2014,with a calibra-tion period from January 2012 to August 2013 and a validation period from September 2013 to December *** and parameter calibration were conducted using the SWAT-SA program,and model performance evaluation relied on comparing the observed discharge at the outlet of the basin with model-simulated discharge,assessed through statistical coefficients including Nash-Sutcliffe Efficiency(NSE),coefficient of determination(R2)and Percent Bias(PBAIS).Calibration results indicated favourable objec-tive function values(NSE=0.79,R2=0.93,PBAIS=-8.53%),although a slight decrease was observed during validation(NSE=0.69,R2=0.86,and PBAIS=-11.41%).The application of the SWAT model to the Wadi Mina upstream watershed highlighted its utility in simulating the spatial distribution of different components of the hydrological balance in this *** SWAT model revealed that approximately 71%of the precipitation in the basin evaporates,while only 29%contributes to surface runoff or infiltration into the soil.

关键词： SWAT model Performance Parameters Runoff Groundwater Wadi

Dunbar Syndrome and Hypoxic Hepatitis: An Unusual Presentation

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Open Journal of Gastroenterology 2024年第6期14卷 226-232页

作者： Hajar Cherkaoui Ismail Chaouech Yousra El Abidi Haroun Robleh Asmae Lamine Maria Lahlali Nada Lahmidani amine Mekkaoui Mounia Elyousfi Dafr Allah Benajah Adil Ibrahimi mohammed El Abkari Nizar Bouardi mohammed Maaroufi Hakima Abid Department of Gastroenterology University Hospital Hassan II Fez Morocco Faculty of Medicine and Pharmacy Fez Morocco Department of Radiology University Hospital Hassan II Fez Morocco

Hypoxic hepatitis, also known as ischemic hepatitis, is characterized by acute hepatocellular injury due to inadequate oxygen delivery to the liver. Celiac trunk stenosis can lead to hepatic ischemia and subsequent liver damage. We present the case of an 81-year-old patient with a history of hypertension, ischemic heart disease, hypothyroidism, and biliary lithiasis, who developed hypoxic hepatitis secondary to Dunbar syndrome and a stenosis of the superior mesenteric artery. The patient improved symptoms and liver function tests with conservative management, including intravenous fluids and supportive care. Long-term management involved continued antiplatelet therapy and statins, with consideration of further interventions for celiac trunk stenosis. This case underscores the importance of recognizing Dunbar syndrome as well as superior mesentery trunk stenosis as a potential cause of hypoxic hepatitis. It highlights the need for multidisciplinary management in such cases.

关键词： Dunbar Syndrome Hypoxic Hepatitis Stenosis of Mesentery Artery

Unraveling the Impact of Direct-Acting Antivirals on Hepatitis-Linked Cirrhosis: A Comprehensive Analysis of Fibrosis, Child Score, and Disease Progression

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Open Journal of Gastroenterology 2024年第6期14卷 203-212页

作者： Hajar Cherkaoui Maryam Elkhayari Maria Lahlali Asmae Lamine Nada Lahmidani amine Mekkaoui Mounia Elyousfi Dafr Allah Benajah mohammed El Abkari Adil Ibrahimi Hakima Abid Department of Hepato-Gastroenterology Hassan II University Hospital Fez Morocco Faculty of Medicine and Pharmacy of Fez USMBA Fez Morocco

The treatment of hepatitis C has undergone a significant boom since the advent of direct acting antivirals (DAA). Indeed, the interferon-ribavirin combination that has been used to treat hepatitis C has a virological response in only 45% of cases with significant side effects. The advent of direct-acting antivirals has changed the prognosis of cirrhotic patients with hepatitis C. DAAs have ensured a sustained viral response in the majority of patients. Our work aims to see the evolution of hepatitis C patients at the cirrhosis stage under DAA. We conducted a retrospective study over 15 years (January 2009, January 2024) including all patients with post-viral cirrhosis C, whom we divided into two groups: group A, cirrhotic patients who received ribavirin and interferon, and group B, patients on DAA. From January 2009 to January 2024, we conducted a study of 182 patients with viral hepatitis C, including 102 cirrhotic patients. The mean age was 55 years. 66% of patients were initially treated with the ribavirin interferon combination, while 34% received direct-acting antivirals (DAAs). Since the introduction of DAAs, the most commonly used regimens have been sofosbuvir/daclatasvir with or without ribavirin and sofosbuvir/ledipasvir with or without ribavirin. Group A achieved sustained virological response (SVR) in 60% of cases, with notable side effects. In Group B, SVR was 98.18%, with improved tolerability and fewer side effects than previous treatments. Fifteen patients developed hepatocellular carcinoma (HCC), with a significantly lower mortality rate in those treated with DAAs compared with pegylated dual therapy (p: 0.001).

关键词： Post-Viral Cirrhosis C Pegylated Interferon Direct Acting Antivirals Sustained Viral Response Child Score Fibrosis

RING OPENING POLYMERIZATION OF TETRAHYDROFURAN CATALYSED BY MAGHNITE-H^+

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Polymer Science 2012年第1期30卷 56-62页

作者： Khadidja Benkenfoud amine Harrane mohammed Belbachir Laboratoire de Chimie des Polymeres Departement de Chimie Faculte des SciencesUniversite d'Oran Es-SeniaBP No 1524 El M'Naouar31000 OranAlgeria

The cationic ring-opening polymerization of tetrahydrofiiran using maghnite-H~＋ is ***-H~＋,is a non-toxic solid catalyst issued from proton exchanged montmorillonite ***,also called ＂poly（butandiol） ether＂,with acetate and hydroxyl end groups was successfully *** of reaction temperature, weight ratio of initiator/monomer and reaction time on the conversion of monomer and on the molecular weight are investigated.A cationic mechanism of the reaction was *** chemistry can be considered as a suitable route for preparing poly（THF） as a soft segment for thermoplastic elastomers.

关键词： Montmorillonite Maghnite Ring opening polymerization THF

Endoscopic retrieval of gastric trichobezoar after fragmentation with electrocautery using polypectomy snare and argon plasma coagulation in a pediatric patient

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Gastroenterology Report 2016年第3期4卷 251-253,I0003页

作者： mohammed amine Benatta Digestive Endoscopy Unit Military Central HospitalAlgiersAlgeria

Trichobezoars are rare,composed of hair and more common in female pediatric patients with psychiatric *** extraction is the most common removal *** two endoscopic removals after fragmentation have beenreported in the English *** report herein a third case of a trichobezoar that was successfully retrieved afterendoscopic fragmentation with snare polypectomy and argon plasma coagulation in a six-year-old female *** mass was completely removed in 10 pieces after 15 *** patient’s course was *** monthslater,she is doing *** endoscopic removal was effective,minimally invasive and time saving.

关键词： trichobezoar retrieval endoscopic fragmentation

Influence of Discretization Step on Asymptotic Stability of a Certain Class of Two-dimensional Continuous-discrete Fractional Linear Systems

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Mathematicae Applicatae Sinica 2022年第1期38卷 68-77页

作者： Souad BOUGUESSA Djillali BOUAGADA mohammed amine GHEZZAR Department of Mathematics and Computer Science ACSY Team-Laboratory of Pure and Applied Mathe-maticsAbdelhamid Ibn Badis University MostaganemP.O.Box 227/118University of Mostaganem27000 MostaganemAlgeria

The effectiveness of this paper lies in the influence of the discretization step on the asymptotic stability of the positive two-dimensional fractional linear *** aims at investigating whether,how and when this step affects the asymptotically stable two-dimensional positive fractional linear continuous-discrete *** accomplish this study,a new test was outlined and used so that the asymptotic stability of the system was measured both before and after being exposed to the sampling ***,the conditions of that stability were *** a result,the outcome of the approximation shows that the stability is preserved under a particular set of *** this basis,the newly proposed approach is recommended for testing the intended stability of such systems.A numerical example is tested to show the accuracy and the applicability of the proposed tests.

关键词： discretization positivity stability two-dimensional systems

Performance Evaluation of Bottom-Standing Submerged Breakwaters in Regular Waves Using the Meshless Singular Boundary Method

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Journal of Ocean University of China 2019年第4期18卷 823-833页

作者： SENOUCI Fawzi CHIOUKH Nadji DRIS mohammed El-amine Department of Hydraulics University Djillali Liabes of Sidi Bel-Abbes Sidi Bel-Abbes 22000 Algeria Laboratory of Naval Aero-Hydrodynamics USTO MB Oran 31000 Algeria Laboratory of Civil Engineering and Environment University Djillali Liabes of Sidi Bel-Abbes Sidi Bel-Abbes 22000 Algeria

In this paper, the improved version of the meshless singular boundary method (ISBM) is developed for analyzing the hydrodynamic performance of bottom-standing submerged breakwaters in regular normally incident waves. Both the single and dual prismatic breakwaters of rectangular and trapezoidal forms are examined. Only the impermeable breakwaters are considered in this study. The physical problem is cast in terms of the Laplace equation governing an irrotational flow and incompressible fluid motion with the appropriate mixed-type boundary conditions, and it is solved numerically using the ISBM. The numerical results are presented in terms of the hydrodynamic quantities of reflection and transmission coefficients. The values are first validated against the data of previous studies, computed, and discussed for a variety of structural conditions, including the height, width, and spacing of breakwater submergence. An excellent agreement is observed between the ISBM results and those of other methods. The breakwater width is found to feature marginal effects compared with the height. The present method is shown to accurately predict the resonant conditions at which the maximum reflection and transmission occur. The trapezoidal breakwaters are found to generally present a wide spectrum of reflections, suggesting that they would function better than the rectangular breakwaters. The dual breakwater systems are confirmed to perform much better than single structures.

关键词： meshless improved singular boundary method regular normal waves rectangular and trapezoidal breakwaters reflection transmission

Convergence of computing,communication,and caching in internet of things

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Intelligent and Converged Networks 2020年第1期1卷 18-36页

作者： mohammed amine Bouras Fadi Farha Huansheng Ning School of Computer and Communication Engineering University of Science and Technology BeijingBeijing 100083China

Internet of Things(IoTs)is a big world of connected objects,including the small and low-resources devices,like sensors,as well as the full-functional computing devices,such as servers and routers in the core *** the emerging of new IoT-based applications,such as smart transportation,smart agriculture,healthcare,and others,there is a need for making great efforts to achieve a balance in using the IoT resources,including Computing,Communication,and *** paper provides an overview of the convergence of Computing,Communication,and Caching(CCC)by covering the IoT technology *** first,we give a snapshot of technology trends in communication,computing,and *** well,we describe the convergence in sensors,devices,and *** the aspect of convergence,we discuss the relationship between CCC technologies in collecting,indexing,processing,and storing data in ***,we introduce the three dimensions of the IoTs based on *** explore different existing technologies that help to solve bottlenecks caused by a large number of physical devices in ***,we propose future research directions and open problems in the convergence of communication,computing,and cashing with sensing and actuating devices.

关键词： convergence computing communication caching sensing actuating Internet of Things(IoTs)

Incidence, clinical features and para-clinical findings of achalasia in Algeria: Experience of 25 years

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2016年第38期22卷 8615-8623页

作者： Amar Tebaibia mohammed amine Boudjella Djamel Boutarene Farouk Benmediouni Hakim Brahimi Nadia Oumnia Internal Medicine Department Kouba HospitalUniversity of Algiers 1 Department of Epidemiology National Public Health InstituteEl BiarUniversity of Algiers 1

AIM To investigate the incidence of achalasia in Algeria and to determine its clinical and para-clinical profile. To evaluate the impact of continuing medical education(CME) on the incidence of this *** From 1990 to 2014, 1256 patients with achalasia were enrolled in this prospective study. A campaign of CME on diagnosis involving different regions of the country was conducted between 1999 and 2003. Annual incidence and prevalence were calculated by relating the number of diagnosed cases to 105 inhabitants. Each patient completed a standardized questionnaire, and underwent upper endoscopy, barium swallow and esophageal manometry. We systematically looked for Allgrove syndrome and familial *** The mean annual incidence raised from 0.04(95%CI: 0.028-0.052) during the 1990 s to 0.27/105 inhabitants/year(95%CI: 0.215-0.321) during the 2000 s. The incidence of the disease was two and half times higher in the north and the center compared to the south of the country. One-hundred-and-twenty-nine(10%) were children and 97(7.7%) had Allgrove syndrome. Familial achalasia was noted in 18 different families. Patients had dysphagia(99%), regurgitation(83%), chest pain(51%), heartburn 24.5% and weight loss(70%). The lower esophageal sphincter was hypertensive in 53% and hypotensive in 0.6%.CONCLUSION The mean incidence of achalasia in Algeria is at least 0.27/105 inhabitants. A good impact on the incidence of CME was noted. A gradient of incidence between different regions of the country was found. This variability is probably related to genetic and environmental factors. The discovery of an infantile achalasia must lead to looking for Allgrove syndrome and similar cases in the family.

关键词： Achalasia Incidence Allgrove syndrome Manometry Continuing medical education