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Multi-Agent Architecture for the Design of WSN Applications

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Wireless Sensor Network 2013年第2期5卷 14-25页

作者： abdelhakim Hamzi Mouloud Koudil Jean-Paul Jamont Michel Occello Ecole Nationale Supérieure d’Informatique LMCS Alger Algeria University of Grenoble LCIS/INPG-UPMF Valence France

Complex and distributed systems are more and more associated with the application of WSN (Wireless Sensor Network) technology. The design of such applications presents important challenges and requires the assistance of several methodologies and tools. Multi-Agent systems (MAS) have been identified as one of the most suitable technologies to contribute to this domain due to their appropriateness for modeling distributed and autonomous complex systems. This work aims to contribute in the help of the design of WSN applications. The proposed architecture exploits the advantages of MAS for modeling WSN services, network topologies and sensor device architectures.

关键词： Wireless Sensor Networks Distributed System Design Multi-Agents System Agent Metamodel

A Study of Structure, Thermal and Mechanical Properties of Free Machining Al-Zn-Sn-Bi Alloys Rapidly Solidified from Molten State

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World Journal of Engineering and Technology 2018年第3期6卷 637-650页

作者： Nermin Ali abdelhakim Rizk Mostafa Shalaby Mustafa Kamal Metal Physics Laboratory Physics Department Faculty of Science Mansoura University Mansoura Egypt

The objective of our study is to investigate the effect of rapid solidification technology using melt spun process from melt on environmentally free machining Al-0.1Zn alloys with tin-bismuth as free machining constituents. The main purpose of rapid solidification from melt is to have a high strength and thermal stability. Structural and thermal properties have been investigated by x-ray diffraction (XRD), scanning electron microscope (SEM) and differential scanning calorimetry (DSC) techniques. Tensile test machine is used to study the mechanical properties such as ultimate tensile strength, elastic constants, yield strength and critical shear stress for free machining alloys. We find?the best free machining aluminum alloy that has excellent machinability qualities is Al-0.1Zn-0.5Sn-0.54Bi melt spun alloy because it offers excellent mechanical properties. The highest values of tensile strength (431.5 MPa), yield strength (393.9 MPa), fracture strength (431.6 Mpa), toughness (15.8 × 106?J/m3) generated from Al-0.1Zn-0.5Sn-0.54Bi alloy to meet the needs of free machining aluminum alloy applications.

关键词： Free Machining Aluminum Alloys Structural Analysis Mechanical Behavior Microhardness Micro Indentation Creep

Design and Parametric Simulation of a Bi-Band Miniaturized PIFA Antenna for the GSM900 and DCS1800 Bands

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Journal of Electromagnetic Analysis and Applications 2013年第5期5卷 189-195页

作者： abdelhakim Elouadih Ahmed Oulad-Said Moha Mrabet Hassani Department of Electrical and Telecommunications Engineering Royal Air Academy (ERA) Marrakesh Morocco Department of Electrical and Telecommunications Engineering Royal Air Academy (ERA) Marrakesh Morocco Department of Physics Semlalia University of Sciences (FSSM) Marrakesh Morocco.

This paper describes the design and simulation by HFSS simulator of a probe-fed Planar Inverted-F Antenna (PIFA) for the use in GSM900 band [890 MHz - 960 MHz] and DCS1800 band [1710 MHz - 1880 MHz]. A methodology based on parametric simulations (parameters are ground plan lenght, height of radiating plate, feeding point position, shorting plate width and position) was used to design optimized antenna. The simulation allowed the characterization of the designed antenna and the computing of different antenna parameters like S11 parameter, resonant frequency, VSWR, bandwidth, impedance in feeding point, gain, diagram pattern and Fields distribution. The results were very interesting and respect the GSM requirements.

关键词： GSM DCS HFSS PIFA Patch Antenna Parametric Simulation

Implication of sewage sludge increased application rates on soil fertility and heavy metals contamination risk

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Emerging Contaminants 2023年第1期9卷 41-52页

作者： Abdelmajid Achkir abdelhakim Aouragh Mohammed El Mahi El Mostapha Lotfi Najoua Labjar Mohammed EL Bouch Moulay Lahcen Ouahidi Taruvinga Badza Hamid Farhane Tawfik EL Moussaoui Laboratory of Spectroscopy Molecular ModellingMaterialsNanomaterialsWater and EnvironmentCERN2DENSAMMohammed V University in Rabat10100Morocco National Laboratory for Studies and Pollution Monitoring-Ministry of Energy Mines and EnvironmentDepartment of EnvironmentRabatMorocco School of Agricultural Earth and Environmental SciencesUniversity of KwaZulu-NatalPrivate Bag X01ScottsvillePietermaritzburg3209South Africa Team of Anthropogenetic Sciences and Biotechnologies Faculty of SciencesChouaib Doukkali UniversityEl Jadida24000Morocco Resources Valorization Environment and Sustainable Development Research Team(RVESD)Department of MinesMines School of RabatAve Hadj Ahmed CherkaouiBP 753AgdalRabat53000Morocco

This paper aims to assess soil fertility and risk contamination parameters in response to increased amendment rates of sewage sludge application,under semi-arid climatic conditions of Morocco,using two soil textures:soil A(clay-silty)and soil B(sandy-clay)over two *** this end,sewage sludge and soils treatments physicochemical parameters,heavy metals content,degree of pollution and associated risks were evaluated and compared to controlled *** results showed that all studied parameters changed significantly(pPb>Zn>Ni>Cd>***,their concentrations were below the critical values established by the European Union for the agronomic use of *** obtained results of assessed parameters indicating SS degree of pollution and associated risks showed a low to a moderate contamination risks of heavy ***,environmental risks of sewage sludge application will be related to increase of heavy metals mainly in a long-term agricultural ***,optimal management of sewage sludge application is recommended to ensure sustainability and benefits at the same time to master the contamination risks.

关键词： Sewage sludge Soil Land application Fertility Heavy metals Risk assessment

The Contribution of the Dromedary in the Spontaneous Plant Seeds Transfer in the Northern Algerian Sahara

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Journal of Life Sciences 2012年第3期6卷 300-303页

作者： Trabelsi Hafida Senoussi abdelhakim Chehma Abdelmadjid Faye Bernard Laboratoire de Bio-ressources Sahariennes Preservation et Valorisation Universite Kasdi Merbah Ouargla 30000 Algerie CIRAD-ES Montpellier Cedex 34398 France

The current study focuses on the contribution of the dromedary in the preservation and increase of spontaneous flora through seeds transfer by endozoochory. Thus dromedary faeces have been collected in selected area of region of Ghardaia （Northern Algeria Sahara）, since it is one of the three known cameline rangelands during the four successive seasons of the years 2009-2010, in order to examine their seed contents. Our investigation allowed us to invento 1,832 seeds representing 33 different types varying according to the seasons of harvest. The biggest density of seeds was present in summer with 986 seeds, against 424 seeds in winter, 366 seeds in fall and 56 seeds in spring, and of the same way, the biggest number of types was present in summer with 30 types, consistent of the fall season with 26 types, and arrived then the season of winter with 20 types and the one of spring with five types. The gotten results allowed us to appreciate the ecological role of this animal in the desertic ecosystem in the dissemination and the proliferation of the seeds of the spontaneous flora in its fragile and hostile desert environment to the survival of the seeds enveloped in its faeces.

关键词： Dromedary seeds endozoochory Saharan rangelands Gharda'fa.

Antioxidant,antimicrobial,and α-glucosidase inhibitory activities of saponin extracts from walnut(Juglans regia L.) leaves

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Asian Pacific Journal of Tropical Biomedicine 2023年第2期13卷 60-69页

作者： Youssef Elouafy Adil El Yadini Salma Mortada Mohamed Hnini Hicham Harhar Asaad Khalid Ashraf NAbdalla abdelhakim Bouyahya Khang Wen Goh Long Chiau Ming My El Abbes Faouzi Mohamed Tabyaoui Laboratory of Materials Nanotechnology and EnvironmentFaculty of SciencesMohammed V University in RabatRabatMorocco Laboratories of Pharmacology and Toxicology Pharmaceutical and Toxicological Analysis Research TeamFaculty of Medicine and PharmacyMohammed V University in RabatRabatMorocco Center of Plant and Microbial Biotechnology Biodiversity and EnvironmentMicrobiology and Molecular Biology TeamFaculty of SciencesMohammed V University in RabatRabatMorocco Substance Abuse and Toxicology Research Center Jazan UniversityJazan 45142Saudi Arabia Medicinal and Aromatic Plants and Traditional Medicine Research Institute National Center for ResearchKhartoumSudan Department of Pharmacology and Toxicology College of PharmacyUmm Al-Qura UniversityMakkahSaudi Arabia Laboratory of Human Pathologies Biology Faculty of SciencesMohammed V University in RabatMorocco Faculty of Data Science and Information Technology INTI International UniversityNilaiMalaysia School of Medical and Life Sciences Sunway UniversitySunway CityMalaysia

Objective:To investigate the relationship between triterpenoid saponin content and antioxidant,antimicrobial,and α-glucosidase inhibitory activities of 70%ethanolic,butanolic,aqueous,supernate and precipitate extracts of Juglans regia ***:Triterpenoid saponins of different Juglans regia leaf extracts were measured by the vanillin *** activity was evaluated against DPPH and ABTS free *** also assessed α-glucosidase inhibitory and antimicrobial activities of the leaf ***’s correlation coefficient was evaluated to determine the correlation between the saponin content and biological ***:The butanolic extract was most effective against DPPH with an IC50of 6.63μg/mL,while the aqueous extract showed the highest scavenging activity against ABTS free radical with an IC50of 42.27μg/***’s correlation analysis indicated a strong negative correlation (r=-0.956) between DPPH radical scavenging activity (IC50) and the saponin content in the samples *** addition,the aqueous extract showed the best α-glucosidase inhibitory activity compared with other *** the extracts had fair antibacterial activity against Bacillus subtilis,Escherichia coli,and Klebsiella pneumoniae except for the aqueous ***:Juglans regia extracts show potent antioxidant,antimicrobial,and α-glucosidase inhibitory *** is a correlation between saponin levels in Juglans regia leaf extracts and the studied ***,additional research is required to establish these relationships by identifying the specific saponin molecules responsible for these activities and elucidating their mechanisms of action.

关键词： Juglans regia leaves Triterpenoid saponin Antioxidant activity DPPH ABTS Antidiabetic activity α-Glucosidase Antimicrobial activity

Phytochemical composition and toxicity assessment of Ammi majus L.

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Asian Pacific Journal of Tropical Biomedicine 2023年第4期13卷 165-175页

作者： Otman El-guourrami Najoua Salhi Fatima Zahra Benkhouili Gokhan Zengin Mustafa Abdullah Yilmaz Mouna Ameggouz Ahmed Zahidi Lamiaa Rouas abdelhakim Bouyahya Khang Wen Goh Toong Hai Sam Long Chiau Ming Anass Doukkali Hanane Benzeid Laboratory of Analytical Chemistry Faculty of Medicine and PharmacyMohammed Ⅴ UniversityRabatMorocco Laboratory of Pharmacology and Toxicology Faculty of Medicine and Pharmacy Mohammed Ⅴ UniversityRabatMorocco Laboratory of Medicinal Chemistry Faculty of Medicine and PharmacyMohammed Ⅴ UniversityRabatMorocco Department of Biology Faculty of ScienceSelcuk UniversityCampus/KonyaTurkey Dicle University Science and Technology Research and Application Center 21280DiyarbakirTurkey Dicle University Faculty of PharmacyDepartment of Analytical Chemistry21280DiyarbakirTurkey Center Hospitalo-Universitaire Ibn Sina Laboratory of AnatomopathologyRabatMorocco Laboratory of Human Pathologies Biology Department of BiologyFaculty of SciencesGenomic Center of Human PathologiesMohammed Ⅴ University in RabatMorocco Faculty of Data Science and Information Technology INTI International UniversityNilai 71800Malaysia Faculty of Business and Communications INTI International UniversityNilai 71800Malaysia School of Medical and Life Sciences Sunway UniversitySunway City 47500Malaysia

Objective:To assess the acute and subacute toxicity as well as the phytochemical composition of two extracts and three fractions of Ammi majus ***:The aqueous extracts were prepared separately by maceration for 48 h and by infusion for 1 h,while the fractions were prepared by the Soxhlet extractor,successively employing cyclohexane,ethyl acetate,and *** acute toxicity study was carried out in accordance with the OECD N°423 guideline at a single dose(2000 mg/kg)in mice for 14 *** subacute toxicity study was performed by a daily oral administration of 250 mg/kg 2 for 10 d and 100 mg/kg doses for 28 *** screening was performed using staining and precipitation reactions,while the chemical characterization of some analytes was detected by HPLC-MS/MS ***:In the acute toxicity study,no signs of toxicity such as convulsion,salivation,diarrhea,sleep and coma were observed during 30 minutes and 14 days,so the lethal dose was higher than 2000 mg/kg for each extract and *** subacute toxicity results showed that at a dose of 250 mg/kg,61.10%of the animals died and the rest developed *** the other hand,at a dose of 100 mg/kg,all the animals were still alive after 28 days,with no morbidity and the biochemical parameters were normal with no abnormalities in the liver,kidneys and *** screening indicated the presence of flavonoids,tannins,coumarins,and free quinones and the absence of alkaloids and ***:The extracts and fractions of Ammi majus *** not toxic in the short and long term with a varied chemical *** tests on animals other than rodents and in the long term(more than 28 days)are needed to further confirm the safety of Ammi majus extracts.

关键词： Ammi majus L. Phytochemical composition Acute toxicity Subacute toxicity Flavonoids

埃及中高级汉语学习者易混动词偏误分析与教学策略

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埃及中高级汉语学习者易混动词偏误分析与教学策略

作者：婉婷（AMINA ZAKARIA abdelhakim ALI）青岛大学

学位级别：硕士

随着汉语在国际上的不断推广,不同国别的研究者也逐渐注重对汉语易混淆词概念的研究;易混淆词作为汉语学习的难点和重点,一直是汉语词汇研究领域的热点。笔者的国家为埃及,因此笔者参与该领域的研究并利用自己的地域优势,考察当地师生... 详细信息

随着汉语在国际上的不断推广,不同国别的研究者也逐渐注重对汉语易混淆词概念的研究;易混淆词作为汉语学习的难点和重点,一直是汉语词汇研究领域的热点。笔者的国家为埃及,因此笔者参与该领域的研究并利用自己的地域优势,考察当地师生易混淆词教与学的情况。因为动词在汉语词汇系统中占有重要地位,因此,本文以埃及学生易混淆的动词做为研究重点。本文以中介语理论、偏误分析理论为理论基础,说明埃及学习者对目的语的动词理解和使用中混淆现象。采用问卷调查的方法,语料来自从HSK动态作文语料库中筛选的动词偏误与观察课堂教学的自然状态制成的预测表词组。整理预测的动词组之后,本《博雅汉语·准中级加速篇》、《HSK5（上）标准教程书册》与《汉语动词380例》,并查阅了15套新HSK五级真题的阅读第二部分,及张博教授主讲的“本源义滞留”讲座,设计了针对埃及中级汉语学生的问卷一;参考《HSK5（上）标准教程书册》与《汉语动词380例》,并查阅了10套新HSK六级真题的阅读第二部分,设计了针对埃及高级汉语学生的问卷二。本文确定了77组易混淆动词,调查的易混淆动词的偏误分为四大类:易混动词的语义偏误;含有相同语素易混动词偏误;相同、相近字形易混动词偏误;相近音易混动词偏误。本文考察的易混淆动词的偏误具有两个特点:词际关系上,埃及学生将“一对一”易混动词偏误次数最多;误用方向上,埃及学生将“单向误用”易混动词偏误次数最多。依据偏误的分类和特点,笔者访谈了5名教师和8名学生,以分析易混动词偏误的产生原因。本文发现,埃及中高级汉语学生产生动词误用的原因有以下三点:母语误推的影响,媒介语负迁移的影响,教与学存在问题的影响;包括教师讲解方式不恰当、学生学习方式不恰当、教材编写与词典使用不恰当。最后,本文从母语误推的角度、媒介语负迁移的角度、教师的教、学生的学、词典的使用以及教材的编写的方面分别提出若干具有针对性和可操作性的改进策略;注重改进教师动词教学策略、注重课堂师生互动、注重使用多媒体功能、注重使用多种教学法、学生自我改进的学习策略、注重使用纸质版词典查询词义以及改进教材中动词词义的编写。

关键词：埃及中高级汉语学习者易混淆动词偏误分析教学策略

High Sensitivity of Porous Cu-Doped SnO₂ Thin Films to Methanol

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Advances in Nanoparticles 2016年第2期5卷 140-148页

作者： Sara Benzitouni Mourad Zaabat Aicha Khial Djamil Rechem Ahlem Benaboud Dhikra Bouras abdelhakim Mahdjoub Mahdia Toubane Raphael Coste Laboratoire des Composants Actifs et Matériaux (LCAM) Université Larbi Ben M’hidi Oum El Bouaghi Algérie Laboratoire des Matériaux et Structure des Systèmes Electromécaniques et leur Fiabilité (LMSSEF) Université Larbi Ben M’hidi Oum El Bouaghi Algérie Unité de Recherche Matériaux Procédés et Environnement (URMPE) Université M’hamed Bougara Boumerdes Algérie Laboratoire de Recherche en Nanoscience (LRN) UFR Sciences Université de Reims Reims France

Porous Cu-doped SnO2 thin films were synthesized by the sol-gel dip-coating method for enhancing methanol sensing performance. The effect of Cu doping concentration on the SnO2 sensibility was investigated. XRD data confirm that the fabricated SnO2 films are polycrystalline with tetragonal rutile crystal structure. AFM and SEM micrographs confirmed the roughness and the porosity of SnO2 surface, respectively. UV-Vis spectrum shows that SnO2 thin films exhibit high transmittance in the visible region ~95%. The band gap (3.80 - 3.92 eV) and the optical thickness (893 - 131 nm) of prepared films were calculated from transmittance data. The sensing results demonstrate that SnO2 films have a high sensitivity and a fast response to methanol. In particular, 3% Cu-SnO2 films have a higher sensitivity (98%), faster response (10-2 s) and shorter recovery time (18 s) than other films.

关键词： SnO2 Cu-Doped Sensitivity Porosity Response Time Band Gap Thin Films