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Partition of Unity Finite element Analysis of Nonlinear Transient Diffusion Problems Using p-Version Refinement

Computer Modeling in Engineering & Sciences 2020年第7期124卷 61-78页

作者： Abdelkarim el Kahoui mustapha Malek Nouh Izem MShadi Mohamed Mohammed Seaid Laboratory of Engineering Sciences Faculty of ScienceIbn Zohr UniversityAgadirMorocco School of Energy GeoscienceInfrastructure and SocietyHeriot-Watt UniversityEdinburghEH144ASUK Department of Engineering Durham UniversityDurhamDH13LEUK International Water Research Institute University Mohammed VI PolytechnicBenguerirMorocco

We propose a high-order enriched partition of unity finite element method for linear and nonlinear time-dependent diffusion *** solution of this class of problems often exhibits non-smooth features such as steep gradients and boundary layers which can be very challenging to recover using the conventional low-order finite element methods.A class of steady-state exponential functions has been widely used for enrichment and its performance to numerically solve these challenges has been ***,these enrichment functions have been used only in context of the standard h-version refinement or the so-called q-version *** this paper we demonstrate that the p-version refinement can also be a very attractive option in terms of the efficiency and the accuracy in the enriched partition of unity finite element ***,the transient diffusion problem is integrated in time using a semi-implicit scheme and the semi-discrete problem is then integrated in space using the p-version enriched finite *** results are presented for three test examples of timedependent diffusion problems in both homogeneous and heterogeneous *** computed results show the significant improvement when using the p-version refined enriched approximations in the finite element *** addition,these results support our expectations for a robust and high-order accurate enriched partition of unity finite element method.

关键词： Partition of unity finite element method p-version refinement

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Numerical Study on the Combined Use of Corten Steel and Phase Change Materials in Container-Type Houses

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Fluid Dynamics & Materials Processing 2023年第4期19卷 953-958页

作者： Feriel mustapha Marwa el Yassi Ikram el Abbassi Abdelhak Kaci elhadj Kadri A-Moumen Darcherif LR2E Research Laboratory in Industrial Eco-Innovation and EnergeticsCergy95000France L2MGC Laboratory of Mechanic and Materials of Civil Engineering Cergy95000France Laboratory of QUARTZ(EA 7393) University of Paris-SeineCergy-Pontoise95014France

A study is presented on the feasibility of an approach based on the combination of Phase Change Materials(PCM)with metal walls in container-type *** line of research finds its motivations in recent trends in the energy and building sectors about energy consumption *** important objective concerns possible improvements in the comfort provided by such houses during the summer *** results obtained through numerical solution of the governing equations accounting for heat transfer and latent heat effects associated with the PCM show that the indoor temperature can be reduced with a varying degree of success depending on the considered conditions.

关键词： Metallic wall phase change materials corten steel thermal comfort

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Wilson's disease in Lebanon and regional countries: Homozygosity and hepatic phenotype predominance

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World Journal of Gastroenterology 2017年第36期23卷 6715-6725页

作者： Kassem Barada Aline el Haddad Meghri Katerji mustapha Jomaa Julnar Usta Department of Internal Medicine American University of Beirut Medical Center Department of Biochemistry and Molecular Genetics Faculty of Medicine American University of Beirut

AIM To determine the phenotypes and predominant diseasecausing mutations in Lebanese patients with Wilson's disease,as compared to regional non-European *** The clinical profile of 36 patients diagnosed in Lebanon was studied and their mutations were determined by molecular *** patients underwent full physical exam,including ophthalmologic slit-lamp examination ultrasound imaging of the liver,as well as measurement of serum ceruloplasmin and 24-h urinaryCu *** addition,genetic screening using PCR followed by sequencing to determine disease-causing mutations and polymorphisms in the ATP7B gene was carried on extracted DNA from patients and immediate family *** phenotypic-genotypic findings were then compared to reported mutations in Wilson's disease patients from regional Arab and non-European countries. RESULTS Patients belonged to extended consanguineous *** majority were homozygous for the disease-causing mutation,with no predominant mutation identified. The most common mutation,detected in 4 out of 13families,involved the ATP hinge region and was present in patients from Lebanon,Egypt,Iran and ***,mutations in Lebanese patients and those of the region were scattered over 17 exons of *** the homozygous exon 12 mutation Trp939Cys was only detected in patients from Lebanon but none from the regional countries,the worldwide common mutation H1069Q was not present in the Lebanese and was rare in the *** hepatic phenotype was predominant in patients from both Lebanon and the region(25%-65%).Furthermore,the majority of patients,including those who were asymptomatic,had evidence of some hepatic *** neurologic phenotype was rare. CONCLUSION Findings do not support presence of a founder *** and genetic screening is recommended for family members with index patients and unexplained hepatic dysfunction.

关键词： Wilson Disease Cu-metabolism Phenotype Genotype ATP7B Hepatic manifestations

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Effect of Recycling Cycles on the Mechanical and Damping Properties of Short Alfa Fibre Reinforced Polypropylene Composite

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Journal of Renewable Materials 2019年第3期7卷 253-267页

作者： Fatima Ezzahra el Abbassi mustapha Assarar Rezak Ayad Hamid Sabhi Stephane Buet Nouzha Lamdouar Department of Civil Engineering University of Cadi AyyadMorocco Laboratory of Engineering and Material Sciences University of Reims Champagne-ArdenneFrance Laboratory of Simulation Instrumentation and MeasurementUniversity of Mohammed VMorocco

This paper aims at studying the effect of recycling on the static and dynamic properties of short alfa fibre reinforced *** this purpose,alfa fibres reinforced composites were elaborated by an injection moulding process and were subjected to different mechanical recycling ***,non-recycled and recycled materials were subjected to static tests and Dynamic Mechanical Analysis(DMA)to evaluate the effect of recycling on their ***,the effects of alkali and salt water treatments on the static and dynamic properties of the alfa composite were also *** obtained results show that tensile and flexural properties of alfa fibres reinforced composites decrease during recycling ***,the recycling induces a drop in the storage modulus and enhances the loss factor of these *** composites with alfa fibre especially the alkali treated composite show the same resistance to recycling as composites with hemp ***,SEM observations indicate a decrease in the fibres dimension with the recycling cycles,especially for alfa fibres,which can explain the decrease in the properties of the alfa composite during recycling operations.

关键词： Alfa fibre hemp fibre eco-composites recycling mechanical properties dynamic properties

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Effect of the synthesis route on the structural and dielectric properties of SrBi1.8Y0.2Nb2O9 ceramics

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International Journal of Minerals,Metallurgy and Materials 2018年第11期25卷 1304-1312页

作者： Mohamed Afqir Amina Tachafine Didier Fasquelle Mohamed elaatmani Jean-Claude Carru Abdelouahad Zegzouti mustapha el Hammioui Laboratoire des Sciences des Matériaux Inorganiques et leurs Applications Facultédes Sciences SemlaliaUniversitéCadi AyyadMarrakech 40000Maroc Unite de Dynamique et Structure des Materiaux Moleculaires Universite du Littoral-Cote d’OpaleCalais 62100France Laboratoire de recherche sur la réactivitédes matériaux et l’optimisation des procédés Facultédes Sciences SemlaliaUniversitéCadi Ayyad 40000MarrakechMaroc

This work is devoted to the synthesis and characterization of yttrium-doped SrBi_2Nb_2O_9 ceramics prepared by three methods: solid state reaction, co-precipitation, and hydrothermal. Multiple characterizations, specifically scanning electron microscopy(SEM), X-ray powder diffraction(XRD), and Fourier transform infrared spectroscopy(FTIR), were used to validate the structural feature. The crystallite size was estimated by Scherrer's formula and the Williamson–Hall plot. The effect of the process on the band intensities of the FTIR spectra was investigated. The crystallite size and microstructure of ceramics prepared from different synthesis processes were strongly influenced by the sinterability. SEM images revealed nanograin ceramics for materials prepared by co-precipitation and hydrothermal methods and micrograin ceramics prepared by the solid state method. The synthesized compounds underwent phase transitions at 480–465°C. The dielectric and electrical properties of these Y-doped SrBi_2Nb_2O_9 ceramics appear to be dependent on the grain size.

关键词： Aurivillius,synthesis routes crystallite size microstructure dielectric

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Versatile synthesis of cadalene and iso-cadalene from himachalene mixtures:Evidence and application of unprecedented rearrangements

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Chinese Chemical Letters 2020年第7期31卷 1851-1854页

作者： mustapha Ait el Had Abdelouahd Oukhrib Mohamed Zaki Martine Urrutigoity Ahmed Benharref Remi Chauvin Laboratoire de Chimie Biomoleculaire Substances Naturelies et Reactivite(URAC 16)Faculte des Sciences SemlaliaUniversite Cadi AyyadB.P.2390MarrakechMorocco CNRS LCC(Laboratoire de Chimie de Coordination)BP 4409931077Toulouse Cedex 4France INP-ENSIACET 4 allee Emile Monso31030Toulouse CedexFrance Universite de Toulouse UPSICT-FR 259931062Toulouse Cedex 9France

From a mixture of α-,β-and y-himachalenes extracted from waste wood of Atlas cedar(Cedrus atlantica),cadalene(1,6-dimethyl-4-isopropylnaphthalene)and iso-cadalene(1,6-dimethyl-3-isopropylnaphthalene)were produced in two steps with up to 71%±5%yield through the ar-himachalene intermediate using I2 and/or AlCl3 as *** selectivity is shown to sharply depend on the operating conditions:while I2/AlCl3 in dichloromethane promotes the formation of cadalene,the formation of iso-cadalene is favored in the presence of AlCl3 in *** bicyclic aromatic compounds were thus obtained through unique rearrangements involving sequential C—C bond cleavage/fo rmation and hydride transfer *** the absence of AlCl3 or I2,dihydrocurcumene was also found to be formed with up to 70%selectivity.A tentative mechanism is proposed and discussed.

关键词： Aromatic reactivity Cadalenes Dihydrocurcumene Himachalenes Rearrangements

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Cystic Lymphangioma on the Floor of the Oral Cavity Extending to the Submandibular Region in Adult Patients

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International Journal of Otolaryngology and Head & Neck Surgery 2020年第4期9卷 133-140页

作者： Nadia M’jahad Najib Benmansour Abdelouahid Taleuan Akammar Amal mustapha Maaroufi Mohamed Nourredine el alami Faculty of Medicine and Pharmacy Sidi Mohammed Benabdellah University Fez Morocco Department of Otorhinolaryngology (ENT) and Headneck Surgery CHU Hassan II Fez Morocco Department of Radiology CHU Hassan II Fez Morocco

Lymphatic malformation (ML), formerly called cystic lymphangioma is a benign hamartomatous tumor of lymphatic vessels. The onset of lymphangiomas is either at birth (60% to 70%) or up to two years of age (90%) and rare in adults. These malformations can occur in any region of the body, Lymphangiomas have marked predilection for the head and neck region (50% - 70%). The most common location in the mouth is the dorsum of tongue. If the positive diagnosis is generally easy, the therapeutic management remains controversial. We report the clinical case of a 23-year-old adult patient with cystic lymphangioma on the floor of the oral cavity extending gradually to the right submandibular region. The clinically suspected tumor was thoroughly explored using tomodensitometry. The treatment consisted of complete resection by a cervicotomy with histological examination confirming the macroscopic diagnosis of cystic lymphangioma. Follow-up at 3 years showed no recurrence.

关键词： Cystic Lymphangioma Oral Cavity The Floor of the Oral Cavity Submandibular Regio

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Contribution of Geophysical Prospecting(Geoelectrical Method) for the Hydrogeological Reconnaissance of the Region of Ouled Youssef(Tadla's Basin,Morocco)

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地学前缘 2009年第S1期16卷 130-131页

作者： Sanaa el Batali Hassane Sahbi Ali Essahlaoui mustapha Boualoul Geological Engineering Laboratory Faculty of Sciences

The Turonian aquifer of the Tadla’s basin shows at present a pronounced reduction of its hydraulic potential linked to overexploitation and deficiency of effective *** order to make an evaluation of the resources of ... 详细信息

关键词： Morocco Tadla’s basin climatology geoelectrical method Turonian aquifer isoresistivity geoelectric sections exploitation’s drillings

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Phenomenology in Pure Aesthetics

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Journal of Civil Engineering and Architecture 2020年第3期14卷 168-173页

作者： mustapha el Moussaoui Universitat Politecnica de Valencia Valencia 46071Spain

Theories of aesthetics have represented aesthetic object as a framed,distanced and contemplated individual piece to be *** particularly to be symbolized as pure,objects of appreciation must be approached with complete objectivity regardless of its *** architecture,“purity”can be understood as the formal or structural elements visible,or pure of any ***,in the philosophical-aesthetic sense,purity is of“disinterest”*** concepts and values are“free”and“pure”in the Kantian sense that they are not derived from any priori *** vision has been challenged by environmental and everyday aesthetics,in which they bring everyday environments and matters into consideration as possible objects of aesthetic *** this paper,I will discuss the importance of aesthetics in the dwelling sense and whether aesthetics is a matter of value in the reminiscent memory of the ***,question the ambiguous term“pure”in architecture and whether this term is correct in the dwellers sense.

关键词： Aesthetics dwelling Heidegger purity architecture.

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Phylogenetic analysis of avian infectious bronchitis virus isolates from Morocco:a retrospective study(1983 to 2014)

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Virologica Sinica 2017年第2期32卷 155-158页

作者： Siham Fellahi Mehdi el Harrak Slimane Khayi Jean-Luc Guerin Jens H.Kuhn Mohammed el Houadfi My mustapha Ennaji Mariette Ducatez Unitéde Pathologie Aviaire Département de Pathologie et SantéPublique VétérinaireInstitut Agronomique et Vétérinaire Hassan IIRabat10000Morocco Sociétéde Produits Biologiques et Pharmaceutiques Vétérinaires Rabat10000Morocco Biotechnology Research Unit National Institute for Agronomic Research(INRA)Rabat10000Morocco 4.Interactions Hôtes-Agents PathogènesUniversitéde ToulouseInstitut National de la Recherche AgronomiqueÉcole National Vétérinaire de ToulouseToulouse31076France 5.Integrated Research Facility at Fort DetrickNational Institute of Allergy and Infectious DiseasesNational Institutes of HealthFrederick21702USA 6.Laboratoire de VirologieMicrobiologie et Qualité/Ecoto xicologie&BiodiversitéFacultédes Sciences et TechniquesMohammediaUniversitéHassan II-CasablancaMohammedia20650Morocco

Dear Editor,Infectious bronchitis(IB),one of the most common and difficult poultry diseases,is caused by a gammacoronavirus named infectious bronchitis virus(IBV).IBV frequently causes respiratory and/or renal disease... 详细信息

关键词： IBV gene to 2014 Phylogenetic analysis of avian infectious bronchitis virus isolates from Morocco a retrospective study

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