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Wave Reflection by Rectangular Breakwaters for Coastal Protection

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Fluid Dynamics & Materials Processing 2024年第3期20卷 579-593页

作者： Hasna Akarni Hamza Mabchour Laila el Aarabi soumia Mordane Laboratory of Polymer Physics Mechanical Sciences and MaterialsFaculty of Sciences Ben M’SikHassan II University of CasablancaCasablanca20670Morocco

In this study,we focus on the numerical modelling of the interaction between waves and submerged structures in the presence of a uniform flow *** the same and opposite senses of wave propagation are *** main objective is an understanding of the effect of the current and various geometrical parameters on the reflection *** wave used in the study is based on potential theory,and the submerged structures consist of two rectangular breakwaters positioned at a fixed distance from each other and attached to the bottom of a wave *** numerical modeling approach employed in this work relies on the Boundary element Method(BEM).The results are compared with experimental data to validate the *** findings of the study demonstrate that the double rectangular breakwater configuration exhibits superior wave attenuation abilities if compared to a single rectangular breakwater,particularly at low ***,the study reveals that wave mitigation is more pronounced when the current and wave propagation are coplanar,whereas it is less effective in the case of opposing current.

关键词： Wave current breakwaters Boundary element Method(BEM) reflection coefficient

Study of Hygrothermal Behavior of Bio-Sourced Material Treated Ecologically for Improving Thermal Performance of Buildings

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Journal of Renewable Materials 2024年第5期12卷 1007-1027页

作者： soumia Mounir Miloudia Slaoui Youssef Maaloufa Fatima Zohra el Wardi Yakubu Aminu Dodo Sara Ibn-elhaj Abdelhamid Khabbazi National School of Architecture Agadir New Complex Ibn Zohr AgadirHay dakhla80000Morocco EMDD CERNE2DUniversity Mohammed V in RabatEst SaléSaléMedinaMorocco Physics Department LPMAT LaboratoryFaculty of Sciences Ain ChockHassan II UniversityCasablancaMorocco Architectural Engineering Department College of Engineering Najran UniversityNajran66426Saudi Arabia The Centre of Scientific and Engineering Research Najran UniversityNajranSaudi Arabia

Creating sustainable cities is the only way to live in a clean environment,and this problem can be solved by using bio-sourced and recycled *** this purpose,the authors contribute to the valuation of sheep wool waste as an eco-friendly material to be used in *** paper investigates the thermal,hygrothermal,and biological aspects of sheep wool by testing a traditional *** biological method of aerobic mesophilicﬂora has been *** X was used to determine the chemical composition of the materials ***,thermal characterization has been *** thermal conductivity is above 0.046(W·m^(-1)·K^(-1))and the thermal diffusivity is 1.56.10^(-6) m^(2)·s^(-1).Besides,the energy efﬁciency of using sheep wool in buildings was ***,its humidity behavior was evaluated in different aspects in both winter and *** of biological analyses show the efﬁciency of the treatment by removing the majority of the microorgan-isms:the value of yeast and mildew was reduced from 38.10^(2) to 2.10^(2)(UFC·g^(-1)).In addition to that,sheep wool permits obtaining a low thermal transmittance on the scale of the walls and low cooling needs on the scale of the building with a gain of 45%and 52%,respectively.

关键词： Sustainability sheep wool biological treatment hygrothermal wool behavior hot wire method

Thermo-Physical Potential of Recycled Banana Fibers for Improving the Thermal and Mechanical Properties of Biosourced Gypsum-Based Materials

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Journal of Renewable Materials 2024年第4期12卷 843-867页

作者： Youssef Maaloufa soumia Mounir Sara Ibnelhaj Fatima Zohra el Wardi Asma Souidi Yakubu Aminu Dodo Malika Atigui Mina Amazal Abelhamid Khabbazi Hassan Demrati Ahmed Aharoune National School of Architecture Agadir New ComplexIbn Zohr UniversityAgadirMorocco Energy Materials and Sustainable Development(EMDD)Center for WaterNatural ResourcesEnvironment and Sustainable Development(CERNE2D)Mohammed V UniversityRabatMorocco Thermodynamics and Energetics Laboratory Faculty of ScienceIbn Zohr UniversityAgadirMorocco Architectural Engineering Department Najran UniversityNajranSaudi Arabia The Centre of Scientific and Engineering Research Najran UniversityNajranSaudi Arabia Physics Department LPMAT LaboratoryFaculty of Sciences Ain ChockHassan II UniversityCasablancaMorocco

The development of bio-sourced materials is essential to ensuring sustainable construction;it is considered a locomotive of the green ***,it is an abundant material in our country,to which very little attention is being *** work aims to valorize the waste of the trunks of banana trees to be used in ***,the physicochemical properties of the fiber,such as the percentage of crystallization and its morphology,have been determined by X-ray diffraction tests and scanning electron microscopy to confirm the potential and the impact of the mode of drying on the quality of the banana fibers,with the purpose to promote the use of this material in ***,the results obtained with the gypsum matrix allowed us to note a preponderant improvement in the composite’s thermal properties thanks to the variation of the banana fiber ***,the impact of the nature of the banana fiber distribution(either fiber mixed in matrix or fiber series model)on the flexural and compressive strengths of the composites was *** results obtained indicate that the insulation gain reaches up to 40%.It depends on the volume fraction and type of distribution of the banana ***,the thermal inertia of the composites developed,represented by thermal diffusivity and thermal effusivity,was *** indicate a gain of 40%and 25%,respectively,in terms of thermal diffusivity and thermal effusivity of the developed composites compared to plaster *** the mechanical properties,the flexural strength depends on the percentage of the volume fraction of banana fibers used,and it can reach 20%more than the flexural strength of plaster;nevertheless,there is a significant loss in terms of the compressive strength of the studied *** results obtained are confirmed by the microstructure of the fiber *** fact,the morphology of the banana fibers was improved by the drying *** reduces the amorphous area an

关键词： Biosourced materials fiber banana flexural strength mechanical properties open-air drying plaster thermal properties waste management

Numerical investigation of Ar–NH3 mixture in homogenous DBDs

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Plasma Science and Technology 2018年第3期20卷 72-77页

作者： Barkahoum LAROUCI soumia BENDelLA Ahmed BelASRI Laboratoire de Physique des Plasmas Materiaux Conducteurs et leurs Applications Faculte de PhysiqueUniversite des Sciences et de la Technologie d'Oran Mohamed Boudiaf USTO-MB El M'Naoeur B.P.1505 31 000 Oran Algeria

In this paper, a study of homogenous dielectric barrier discharge Ar–NHwas made in order to investigate the electrical and the physical characteristics of homogenous discharge at atmospheric pressure. The discharge model includes the electrical module and the chemical kinetic module. The results obtained by the present model were compared with experimental work. The evolution of the plasmas voltage, the species densities, and the concentration of charged species are analyzed and discussed.

关键词： plasma simulation dielectric barrier discharge Ar-NH3 mixture

Potential effect of Silybum marianum L. and Cistus ladaniferus *** on urine volume, creatinine clearance and renal function

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Asian Pacific Journal of Tropical Medicine 2018年第6期11卷 393-398页

作者： Nawal el Menyiy Noori Al-Waili Redouan el-Haskoury Meryem Bakour soumia Zizi Thia Al-Waili Badiaa Lyoussi Physiology-Pharmacology and Environmental Health Laboratory Faculty of Sciences Dhar MahrazUniversity Sidi Mohamed Ben AbdallahFez 30000Morocco New York Medical Care for Nephrology Richmond HillNew York 11418USA

Objective:To investigate the diuretic and renal effects of Silybum marianum *** Cistus ladaniferus *** normal ***:Four groups of rats were used in each *** first group received water,the second group received Cistus ladaniferus ***(100 mg/kg ***),the third group received Silybum marianum ***(100 mg/kg ***),and the fourth group received furosemide(10 mg/kg ***).Variables including urine volume,plasma and urine sodium,potassium and creatinine,and creatinine clearance were *** experiments were conducted.A single dose of each intervention was used and the variables were measured during 24 h,and the interventions were given daily for a total of 8 d and the variables were measured during various ***:The single dose of each plant extract increased urine volume at all-time intervals and increased urine sodium and potassium excretion without affecting plasma sodium and potassium(Pelectrolytes(P<0.05),while furosemide caused *** plant extracts significantly increased creatinine clearance(P<0.05).Conclusions:Silybum marianum *** Cistus ladaniferus L Increase creatinine clearance and have a significant diuretic effect without affecting serum *** marianum *** more potent than furosemide or Cistus ladaniferus L.

关键词： Silybum marianum L. Cistus ladaniferus L. Diuresis Urine volume Sodium Potassium Creatinine clearance

Influence of the Inclination Angle on Mixed Convection and Heat Transfer in a“T”Shaped Double Enclosure

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Fluid Dynamics & Materials Processing 2023年第7期19卷 1753-1774页

作者： M’Barka Mourabit Meryam Meknassi Soukaina Fekkar soumia Mordane Hicham Rouijaa el Alami Semma Polymer Physics and Critical Phenomena Laboratory Department of PhysicsFaculty of Sciences of Ben M’SikHassanⅡUniversityCasablancaMorocco Laboratory of Control and Mechanical Characterization of Materials and Structures National Higher School of Electricity and MechanicsHassanⅡUniversityCasablancaMorocco Laboratory of electrical Systems and Telecommunications Department of Applied PhysicsFSTHassan 1^(st)UniversitySettatMorocco Laboratory of Engineering Industrial Management and Innovation FSTHassan 1^(st)UniversitySettatMorocco

The effect of the tilt angle on mixed convection and related heat transfer in a“T”shaped double enclosure with four heated obstacles on the bottom surface is numerically *** considered obstacles are constantly kept at a relatively high(fixed)temperature,while the cavity’s upper wall is *** finite volume approach is used to solve the mass,momentum,and energy equations with the SIMPLEC algorithm being exploited to deal with the pressure-velocity *** is put on the influence of the tilt angle on the solution symmetry,flow structure,and heat exchange through the *** following parameters and related ranges are considered:Rayleigh number 104≤Ra≤5.105,tilt angle 0°≤φ≤90°,Reynolds number 100≤Re≤1000,Prandtl number Pr=0.72,block height B=0.5,opening width C=0.15,and distance between blocks D=*** results reveal different branches of solutions on varying Re andφ.They also show that the symmetry of the solution regarding the P_(2)axis is retained for all cases with no tilt and for values of Re between 100 and 1000.

关键词： Mixed convection heat transfer inclination angle “T”shaped double cavity

Antioxidant and diuretic activity of co-administration of Capparis spinosa honey and propolis in comparison to furosemide

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Asian Pacific Journal of Tropical Medicine 2017年第10期10卷 974-980页

作者： Soukaina el-Guendouz Noori Al-Waili Smail Aazza Youssef elamine soumia Zizi Thia Al-Waili Ali Al-Waili Badiaa Lyoussi Laboratory Physiology-Pharmacology&Environmental Health Faculty of Sciences Dhar-MahrazUniversity Sidi Mohamed Ben AbdallahFezMorocco New York Medical Care for Nephrology Richmond HillNew York 11418USA

Objective: To study the antioxidant properties of Capparis spinosa(***) honey and propolis and the effect of combined honey and propolis administration on urine volume and electrolytes in ***: *** honey [1 000 mg/kg body weight(***)], propolis(100 mg/kg ***), honey/propolis mixture(*** honey 1 000 mg/kg ***/propolis extract 100 mg/kg ***), distilled water(1 mL/kg ***) and furosemide(10 mg/kg ***) were orally administered to fi ve groups of rats for 21 *** volume, blood and urine sodium,potassium and chloride were *** antioxidant activity of propolis and honey was assessed and their total phenols and flavonoids were ***: Propolis and *** honey contain polyphenols including flavonoids and propolis demonstrated higher antioxidant activities than *** significantly increased urine volume and urine electrolyte *** had no significant effect on urine volume, but co-administration of propolis and honey caused significant *** major changes were observed in plasma electrolytes with the use of honey, propolis or their ***: Honey and propolis have antioxidant activity and contain polyphenols including flavonoids that are more pronounced in *** has a significant diuretic activity alone or in combination with *** is the first study comparing the diuretic effect of co-administration of propolis and *** honey with furosemide.

关键词： Honey Propolis Antioxidants Diuresis Sodium Potassium

Wave Energy Potential Analysis in the Casablanca-Mohammedia Coastal Area (Morocco)

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Journal of Marine Science and Application 2022年第1期21卷 92-101页

作者： Laila Mouakkir Mohamed el hou soumia Mordane Mohamed Chagdali Physics Department Polymer PhysicsMechanical Sciences and Materials LaboratoryFaculty of Sciences Ben M’sikUniversity HassanII20023Moroccan Regional Direction DRMC General Direction of Meteorology80007Moroccan

In the last two decades,the exploitation of marine renewable energies(70%of the globe is made up of oceans),especially wave energy,has attracted great interest,not only for their high potential,but also for their high energy *** development of wave energy is suitable for countries or regions with extensive coastline and high waves approaching the *** paper focuses on the study of wave potential and wave energy distribution in the Casablanca-Mohammedia nearshore area(Moroccan Atlantic coast)in order to identify prospective wave energy *** achieve this purpose,the offshore wave potential was firstly estimated from a 20 years wave data provided by ECMWF(European Center for Medium range Weather Forecasts).In the second step,a numerical modeling of the wave propagation in the study area was performed using the SWAN model jointly with *** performance of the model to simulate accurately the wave field was evaluated in a real situation characterized by large *** model then was applied to determine the patterns of wave field in the Casablanca-Mohammedia nearshore area for a typical wave conditions(winter,summer and storm).The results of this study show the abundance of wave energy in the region with an average annual wave potential of about 22 kW/m.A seasonal variability of the wave resource was demonstrated,with values five times higher in winter than in *** addition,a major hotspot site was identified that should be considered when studyingWEC *** hotspot is located at the southern edge of the Casablanca-Mohammedia coast,near the coastal area of Sidi Rahal.

关键词： Wave energy Numerical wave modeling SWAN model WAVEWATCHIII model Casablanca-Mohammedia coast(Morocco)

Assessment of Cork Oak Decline Using Digital Multispectral Imagery in Relation with in Situ Crown Condition

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Open Journal of Forestry 2023年第1期13卷 145-160页

作者： soumia el Ahmadi Hassan Ramzi Abderrahman Aafi Nejm Eddine Jmii Taoufik Aadel National Forestry School of Engineering Salé Morocco University of Quebec in Outaouais Institute of Temperate Forest Sciences Ripon Canada National Center for Climate and Forest Risk Management Rabat Morocco

Cork oak in Maamora forest is experiencing the dieback phenomenon. The evaluation of the latter in this forest has gained the importance over time and with the solicitation of managers to objectify its phytosanitary situation. Aiming at prioritizing management actions, remote sensing seems to be an effective tool to inquire about stands’ health conditions and their evolution. To this end, this study aims at mapping and validating health status of cork oak stands in Maamora. Sentinel 2 images in 2015 and 2020 were processed to calculate the differential normalized difference water index (NDWI), revealing vegetation moisture variation caused by drought. A statistical method based on thresholds was used to map cork oak dieback stands, those with no changes and those recovered. Results have shown that 54.63% of cork oak in Maamora forest have not changed in terms of phytosanitary situation between 2015 and 2020, 31.10% of oak stands are afflicted by a slight decline and 12.97% by a severe decline. Areas with slight or strong recovery remain minimal and represent 1.04% and 0.25% respectively. Ground data indicated that the map generated displayed a good distinction between stands severely and slightly declined with a global accuracy of 66.66%. Therefore, further research elaborating an advanced vegetation index reflecting the various factors of dieback would be of much importance.

关键词： Dieback Cork Oak Forest Mâamora Satellite Images Crown Condition