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Journal of Rock Mechanics and Geotechnical Engineering 2017年第1期9卷 74-83页

作者： abdelaali rahmouni Abderrahim Boulanouar Abderrahim Samaouali Mohamed Boukalouch Yves Géraud Jamal Sebbani Laboratory of Thermodynamics Department of Physics Faculty of Science Mohammed V University P.O. Box 1014 Rabat Morocco University of Lorraine ENSG UMR 7359-GeoRessources Nancy Cedex France

Natural materials(e.g. rocks and soils) are porous media, whose microstructures present a wide *** generally consist of a heterogeneous solid phase and a porous phase which may be fully or partially saturated with one or more fluids. The prediction of elastic and acoustic properties of porous materials is very important in many fields, such as physics of rocks, reservoir geophysics, civil engineering, construction field and study of the behavior of historical monuments. The aim of this work is to predict the elastic and acoustic behaviors of isotropic porous materials of a solid matrix containing dry, saturated and partially saturated spherical pores. For this, a homogenization technique based on the Morie Tanaka model is presented to connect the elastic and acoustic properties to porosity and degree of water saturation. Non-destructive ultrasonic technique is used to determine the elastic properties from measurements of P-wave velocities. The results obtained show the influence of porosity and degree of water saturation on the effective properties. The various predictions of Morie Tanaka model are then compared with experimental results for the elastic and acoustic properties of calcarenite.

关键词： Calcarenite Porous media Homogenization Morie Tanaka model Porosity Elastic properties Acoustic properties Degree of water saturation

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Impacts of anisotropy coefficient and porosity on the thermal conductivity and P-wave velocity of calcarenites used as building materials of historical monuments in Morocco

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Journal of Rock Mechanics and Geotechnical Engineering 2023年第7期15卷 1687-1699页

作者： abdelaali rahmouni Abderrahim Boulanouar Younes El Rhaffari Mohammed Hraita Aziz Zaroual Yves Géraud Jamal Sebbani Abdellah Rezzouk Bassem S.Nabawy Laboratory of Solid State Physics Department of PhysicsFaculty of Science Dhar El MahrazSidi Mohamed Ben Abdellah UniversityFezMorocco Laboratory of Applied Sciences National School of Applied SciencesAbdelmalek Essaadi UniversityAl HoceimaMorocco Laboratory of Civil Engineering and Environment Higher School of Technology of SaléMohammed V UniversityRabatMorocco Department of Physics Higher Normal SchoolMohammed V UniversityRabatMorocco Laboratory of Materials Nanotechnologies and EnvironmentFaculty of ScienceMohammed V UniversityRabatMorocco University of Lorraine ENSGUMR 7359-GeoRessourcesNancyFrance Mechanics and Materials Team Faculty of ScienceMohammed V UniversityRabatMorocco Geophysical Sciences Department National Research CentreCairoEgypt

It is essential to study the porosity,thermal conductivity,and P-wave velocity of calcarenites,as well as the anisotropy coefficients of the thermal conductivity and P-wave velocity,for civil engineering,and conservation and restoration of historical *** study focuses on measuring the thermal conductivity using the thermal conductivity scanning(TCS)technique and measuring the P-wave ve-locity using portable *** was applied for some dry and saturated calcarenite samples in the horizontal and vertical directions(parallel and perpendicular to the bedding plane,respectively).The calcarenites were selected from some historical monuments in *** physical properties were measured in the laboratory to find a reliable relationship between all of these *** a result of the statistical analysis of the obtained data,excellent linear relationships were observed between the porosity and both the thermal conductivity and *** relationships are characterized by relatively high coefficients of determination for the horizontal and vertical *** on the thermal conductivity and P-wave velocity values in these two directions,the anisotropy coefficients of these two properties were *** internal structure and the pore fabric of the calcarenite samples were delineated using scanning electron microscopy(SEM),while their chemical and mineral compositions were studied using the energy dispersive X-ray analysis(EDXA)and X-ray diffraction(XRD)techniques.

关键词： Moroccan historical monuments Calcarenite Thermal conductivity P-wave velocity Porosity Anisotropy coefficient Water saturation

Determination of Thermal Conductivity and Porosity of Building Stone from Ultrasonic Velocity Measurements

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Geomaterials 2013年第4期3卷 138-144页

作者： Abderrahim Boulanouar abdelaali rahmouni Mohamed Boukalouch Abderrahim Samaouali Yves Géraud Mimoun Harnafi Jamal Sebbani Department of Earth Science Scientific Institute Mohamed V University Rabat Morocco Laboratory of Thermodynamics Department of Physics Faculty of Science Mohammed V University Rabat Morocco University of Strasbourg EOST Institute of Global Physics Strasbourg France

Ultrasonic velocity measurement, a non-destructive and easy method to apply in both field and laboratory conditions, has increasingly been conducted to determine the physical properties of rock materials. This paper presents an experimental study of the measurement of P-wave velocity, thermal conductivity and porosity of several types of sedimentary, metamorphic, and magmatic rocks. The aim of this study is to predict the rocks properties including their thermal conductivity and porosity using P-wave velocity. For this purpose, the physical properties are determined in the laboratory to obtain correlations between P-wave velocity and physical properties. Consequently, good linear relationships are found between all the determined physical properties and the P-wave velocity measurements.

关键词： Building Stone Thermal Conductivity P-Wave Velocity Porosity Optical Scanning

Prediction of Porosity and Density of Calcarenite Rocks from P-Wave Velocity Measurements

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International Journal of Geosciences 2013年第9期4卷 1292-1299页

作者： abdelaali rahmouni Abderrahim Boulanouar Mohamed Boukalouch Yves Géraud Abderrahim Samaouali Mimoun Harnafi Jamal Sebbani Department of Earth Science Scientific Institute Mohamed V University Rabat Morocco Laboratory of Thermodynamics Department of Physics Faculty of Science Mohammed V University Rabat Morocco University of Strasbourg EOST Institute of Global Physics Strasbourg Cedex France

Petrophysical proprieties such as porosity, density, permeability and saturation have a marked impact on acoustic proprieties of rocks. Hence, there has been recently a strong incentive to use new geophysical techniques to invert such properties from seismic or sonic measurements for rocks characterization. The P-wave velocity, which is non-destructtive and easy method to apply in both field and laboratory conditions, has increasingly been conducted to determine the geotechnical properties of rock materials. The P-wave velocity of a rock is closely related to the intact rock properties, and been measuring the velocity in rock masses describes the rock structure and texture. The present work deals with the use of a simple and non-destructive technique, ultrasonic velocity, to predict the porosity and density of calcarenite rocks that are characteristic in historical monument. The ultrasonic test is based on measuring the propagation time of a P-wave in the longitudinal direction. Good correlations between P-wave velocity, porosity and density were found, which indicated them as an appropriate technique for estimating the porosity and density.

关键词： Calcarenite Rocks Porosity Density P-Wave Velocity Regression Analysis T Student

Spatial variation of coda wave attenuation using aftershocks of the Al Hoceima earthquake of 24 February, 2004, Morocco

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Natural Science 2013年第8期5卷 72-77页

作者： Abderrahim Boulanouar Lahcen El Moudnib Mimoun Harnafi Taj-Eddine Cherkaoui abdelaali rahmouni Mohamed Boukalouch Jamal Sebbani Earth Science Department Scientific Institute Mohammed V University-Agdal Rabat Morocco Physics Department Faculty of Science Mohammed V University-Agdal Rabat Morocco Physics Department Faculty of Science Mohammed V University-Agdal Rabat Morocco Earth Science Department Scientific Institute Mohammed V University-Agdal Rabat Morocco

On 24th February 2004 a significant earthquake (Md = 6.4) occurred in the north of Moroccocausing great damage in the vicinity of Al Hoceima region. This area is characterized by a complex faulting system as a result of compressional tectonic forces. Three short period seismic stations are set in this area of interest and recordings from these stations were used in this study. In order to complete our knowledge of attenuation, 60 local earthquakes are recorded a few days after the great earthquake with magnitude Ml 2.6 - 5.0 to estimate seismic attenuation. For this purpose, we applied the single backscattering model of Aki & Chouet 1975 inthe frequency range for 1 to 8 Hz. The study of coda waves was limited to a relatively short lapse time (20 Seconds) in order to sample the earth’s crust only. The values of Qc estimated for all the three stations show a strong frequency dependent relationship of the form Qc = Q0fn, where Q0 is Qc at 1 Hz , and n represents the degree of frequency dependence, and reflects the level of crustal heterogeneities to varying degrees. The average frequency dependent attenuation relationship has been obtained which indicates that the attenuation is high in this region. Finally to conclude our work, the values of Q0 suggest that Al Hoceima area is highly heterogeneous and the n parameter indicates a meaning frequency dependence of Qc.

关键词： Attenuation Coda Waves Single Backscattering Model Al Hoceima Morocco Seismic Earthquake

AN IMPROVED HARDY'S INEQUALITY

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Acta Mathematica Scientia 2013年第5期33卷 1382-1386页

作者： Assal MILOUD rahmouni ATEF Department of Mathematics Faculty of Science King Abdulaziz University Department of Mathematics Faculty of Sciences of Bizerte University of Carthage

In this paper we shall extend Hardy＇s inequality associated with Fourier trans- form to the strip n（2-p） ≤σ〈 n＋p（N＋ 1） where N = [n（1/p- 1）], the greatest integer not exceeding n（1/p - 1）.

关键词： Hardy's space Hardy's inequality

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Identification of Hammerstein-Wiener model with discontinuous input nonlinearity

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Science China(Information Sciences) 2023年第12期66卷 33-47页

作者： A.BROURI F.Z.EL MANSOURI F.Z.CHAOUI C.abdelaali F.GIRI ENSAM Moulay Ismail University ENSAM University Mohammed V Normandie Universite

This paper deals with the identification of Hammerstein-Wiener models with an irregular function in the input block. These models comprise a set of linear segments. The linear time invariant(LTI) block may be parametric or nonparametric. The nonlinearity of the output can be any continuous function of arbitrary shape; it is not necessarily assumed to be invertible. Subsequently, sine inputs will be used to identify the system parameters. First, the output nonlinearity is determined by filtering the system output and varying the phase of a given reference sine signal; second, the parameters of the linear block can be determined for any frequency; and finally, the input nonlinearity can be obtained by changing the offset and amplitude of the input sine signal.

关键词： nonlinear systems nonlinear systems identification Hammerstein-Wiener models discontinuous nonlinearities hard nonlinearities

On the Combination of Silica Fume and Ceramic Waste for the Sustainable Production of Mortar

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Fluid Dynamics & Materials Processing 2023年第5期19卷 1083-1090页

作者： Zine El Abidine rahmouni Mekki Maza Nadia Tebbal Messaouda Belouadah Civil Engineering Department Faculty of TechnologyM’sila UniversityM’sila28000Algeria Institute of Technical Urban Management M’sila UniversityM’sila28000Algeria

The combined use of silica fume(SF)and ceramic waste(CW)for the production of mortar is *** is replaced by 5%,10%,15%and 20%of CW while a fixed 5%percentage(%wt of cement)of SF is *** results show that the best results are obtained by using silica fume and ceramic waste sand with 15%weight of sand and 5%wt of *** the addition of sand ceramic waste(SCW),the mortar compressive strength and density increase,while the porosity displays an opposite *** experimental analysis is complemented with theoretical considerations on the matrix strength and related improvements in mechanical *** is shown that the agreement between the experimental values and the estimated values is good.

关键词： Mortar silica fume ceramic waste full factorial arrangement mechanical properties

Entangled photon pair generation in an integrated SiC platform

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Light(Science & Applications) 2024年第6期13卷 1041-1046页

作者： Anouar rahmouni Ruixuan Wang Jingwei Li Xiao Tang Thomas Gerrits Oliver Slattery Qing Li Lijun Ma National Institute of Standards and Technology 100 Bureau DrGaithersburgMD20899USA Department of Electrical and Computer Engineering Carnegie Mellon UniversityPittsburghPA15213USA

Entanglement plays a vital role in quantum information *** to its unique material properties,silicon carbide recently emerged as a promising candidate for the scalable implementation of advanced quantum information processing *** date,however,only entanglement of nuclear spins has been reported in silicon carbide,while an entangled photon source,whether it is based on bulk or chip-scale technologies,has remained ***,we report the demonstration of an entangled photon source in an integrated silicon carbide platform for the first ***,strongly correlated photon pairs are efficiently generated at the telecom C-band wavelength through implementing spontaneous four-wave mixing in a compact microring resonator in the 4H-silicon-carbide-on-insulator *** maximum coincidence-to-accidental ratio exceeds 600 at a pump power of 0.17 mW,corresponding to a pair generation rate of(9±1)×10^(3) pairs/***-time entanglement is created and verified for such signal-idler photon pairs,with the two-photon interference fringes exhibiting a visibility larger than 99%.The heralded single-photon properties are also measured,with the heralded g^((2))(0)on the order of 10^(−3),demonstrating the SiC platform as a prospective fully integrated,complementary metal-oxide-semiconductor compatible single-photon source for quantum applications.

关键词： quantum coincidence mixing

Anti-inflammatory and analgesic properties of Moroccan medicinal plants:Phytochemistry,in vitro and in vivo investigations,mechanism insights,clinical evidences and perspectives

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Journal of Pharmaceutical Analysis 2022年第1期12卷 35-57页

作者： Abdelhakim Bouyahya Fatima-Ezzahrae Guaouguaou Nasreddine El Omari Naoual El Menyiy abdelaali Balahbib Mohamed El-Shazly Youssef Bakri Laboratory of Human Pathologies Biology Department of BiologyFaculty of Sciencesand Genomic Center of Human PathologiesFaculty of Medicine and PharmacyMohammed Ⅴ University in Rabat4014Morocco Mohammed Ⅴ University in Rabat LPCMIOMaterials Science Center(MSC)Ecole Normale SuperieureRabat1014Morocco Laboratory of Histology Embryology and CytogeneticFaculty of Medicine and PharmacyMohammed Ⅴ University in Rabat10100Morocco Department of Biology Faculty of Sciences Dhar El MahrazUniversity Sidi Mohamed Ben AbdellahFez30003Morocco Laboratory of Zoology and General Biology Faculty of SciencesMohammed Ⅴ University in RabatRabat1014Morocco Department of Pharmacognosy Faculty of PharmacyAin-Shams UniversityCairo11566Egypt Department of Pharmaceutical Biology Faculty of Pharmacy and BiotechnologyGerman University in CairoCairo11835Egypt

Moroccan medicinal plants exhibit several pharmacological properties such as antimicrobial,anticancer,antidiabetic,analgesic,and anti-inflammatory effects,which are related to the presence of numerous bioactive compounds,including phenolic acids,flavonoids,and *** the present review,we systematically evaluate previously published reports on the anti-inflammatory and analgesic effects of Moroccan medicinal *** in vitro investigations revealed that Moroccan medicinal plants inhibit several enzymes related to inflammatory processes,whereas in vivo studies noted significant anti-inflammatory and analgesic effects as demonstrated using different experimental *** bioactive compounds exhibiting in vitro and in vivo anti-inflammatory and analgesic effects,with diverse mechanisms of action,have been *** plants and their bioactive compounds reveal specific secondary metabolites that possess important anti-inflammatory effects in clinical *** review proposes the potential applications of Moroccan medicinal plants as sources of anti-inflammatory and analgesic agents.

关键词： Inflammation Medicinal plants Bioactive compounds Anti-inflammatory Analgesic

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