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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

Wheat breeding for Hessian fly resistance at ICARDA

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The Crop Journal 2022年第6期10卷 1528-1535页

作者： Wuletaw Tadesse Samira El-Hanafi Karim El-Fakhouri Imane Imseg fatima ezzahra Rachdad Zakaria El-Gataa Mustapha El Bouhssini International Center for Agricultural Research in the Dry Areas(ICARDA) P.O.Box 6299RabatMorocco Biodiversity and Plant Sciences Program AbroBioSciencesMohammed VI Polytechnic UniversityLot 660-Hay Moulay Rachid43150 Ben GuerirMorocco

Hessian fly(HF),Mayetiola destructor(Say)is an important pest of wheat in North Africa,North America,Southern Europe,Northern Kazakhstan,Northwestern China,and New *** can cause up to 30%yield losses and sometimes can result in complete crop failure if infestation coincides with young stage of the wheat *** to-date have shown the availability of genetic diversity in the wheat genetic resources(landraces,wild relatives,cultivars,etc.)for resistance to Hessian *** 37 resistance genes have been reported from these wheat genetic resources for resistance to Hessian fly,of which,some have been deployed singly or in combination in the breeding programs to develop high yielding varieties with resistance to *** of resistant varieties in different agro-ecologies with other integrated management measures plays key role for the control of *** paper summarizes the importance,life cycle,mechanisms of resistance,gene mining,and wheat breeding efforts for HF resistance.

关键词： Breeding Gene introgression Hessian fly Resistance

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中国-摩洛哥经贸合作研究

中国-摩洛哥经贸合作研究

作者： BENNANI fatima-ezzahra 上海外国语大学

学位级别：硕士

中国的现代化发展以其对经济的多样化与经济链提升的雄心而闻名。同时,中国希望成长成为"成为世界制造业大国中的领导者"。1978年经济改革后,中国在非洲的参与度稳步上升。自2000年以来,中非贸易额开始迅速上升。2016年5月,摩洛哥国王... 详细信息

中国的现代化发展以其对经济的多样化与经济链提升的雄心而闻名。同时,中国希望成长成为"成为世界制造业大国中的领导者"。1978年经济改革后,中国在非洲的参与度稳步上升。自2000年以来,中非贸易额开始迅速上升。2016年5月,摩洛哥国王访问了中国,并同意在众多协议基础上与中国国家主席习近平建立国家间战略伙伴关系,使摩洛哥成为"一带一路"的参与国家,加强所有部门的双边合作(已于2022年1月签署)。本论文旨在了解中国同摩洛哥商业关系的本质。因此,本论文将通过社会交换理论的视角,基于在摩洛哥的中摩公司来探索该问题。这些公司在摩洛哥正面临着整合问题。因此,基于主要研究问题是“摩洛哥和中国公司之间的关系如何?”论文将分三个子问题进行深入的分析。研究采用定性研究设计,从文献和深度访谈两个不同的来源收集数据。在分析数据时,编码和主题分析将用于收集的访谈,然后用内容分析方法来进行相关的文献文本解析。通过分析资料来源,本论文考察了中国在非洲的投资和贸易(以摩洛哥为案例研究),随后分析了中摩政府如何促进双边贸易和对外投资,然后,了解摩洛哥的合同工业工程师与中国完成在摩洛哥的直接投资。研究结果表明,中摩合作企业在交换商品或服务、建立关系、双方在竞争对手压力下各尽所能的过程中,具有三种社会交换理论的特征。此外,公司通过社会交换理论的因素证明检验证明了它们之间的相互依赖、交换和利益。此外,研究通过分析资料来源,本文考察了中国在非洲的投资和贸易(以摩洛哥为案例研究),接着是中摩政府如何促进双边贸易和对外投资,然后,了解摩洛哥的合同工业工程师以完成中国在摩洛哥的直接投资。也,研究结果表明,中摩合作企业在交换商品或服务、建立关系、双方在竞争对手压力下各尽所能的过程中,具有三种社会交换理论的特征。此外,公司通过社会交换理论的因素证明检验证明了它们之间存在相互依赖、交换和利益。此外,根据分析结果,作者提取四个主题来回答论文主要问题和本研究的目标,即联系、跨文化商业交流、经济增长和互利共赢。因此,由于跨文化商务交流,一些在摩洛哥的中国企业面临着一些整合问题此外,中摩商业公司的本质是一种建立在联系和跨文化商务沟通基础上的互利关系。并且,受访者认为,选择的研究方法(社会交换理论)适用于公司之间的健康合作并且公司寻求利益最大化,成本最小化。本论文的局限性在于研究经验和信息的可靠性。在该研究基础上,为了更好地了解中国-摩洛哥商业关系的质量,建议重点对更多的中摩合作公司、在摩洛哥的中国公司和与中摩关系有关的外交官进行深入分析。此外,摩洛哥和中国于2022年1月签署“一带一路”项目。所以,研究能使用混合方法和重点放在“中摩一带一路”项目视角上。

关键词：中摩关系中摩贸易企业合作、交换社会理论双赢合作

Mapping and Characterization of Agricultural Systems from Time Series of Normalized Difference Vegetation Index (NDVI) in the Northeast Area of Tadla, Morocco

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Natural Resources 2017年第1期8卷 24-30页

作者： Didi Salahddine fatima ezzahra Housni Abdessamad Najine Amina Wafik Mohamed Aadraoui fatima Zahra Hafiane Humberto Bracamontes del Toro Valuation Laboratory and Natural Resources Management Faculty of Science and Technology University Sultan Moulay Slimane Beni Mellal Morocco Southern Region University Center University of Guadalajara Ciudad Guzm&aacute n M&eacute xico Dynamic Laboratory of the Lithosphere and the Genesis of Mineral and Energy Resources Department of Geology Faculty of Science Semlalia University Cadi Ayyad Marrakech Morocco Laboratory of Geosciences and Environment Faculty of Science and Technology University Sultan Moulay Slimane Beni Mellal Morocco Unit Pollution Ecotoxicology and Risk Sanitary Scientific Institute Mohammed V University Rabat Morocco Cd. Guzmá n Institute of Technology Ciudad Guzm&aacute n M&eacute xico

Introduction: Agriculture is the focus of sustainable development and food security in Morocco, contributing 14% to the national economy and its socio-economic impact depends on agro-climatic conditions and the availability of water resources. The objective of this work is to demonstrate that agriculture in Morocco, and especially in the Tadla region, is distributed according to the availability of underground water. Method: This work was carried out in the transition zone between the phosphate plateau and the plain of Tadla, a site of more than 124,000 ha. To achieve the objectives set, we used Landsat-8 OLI (Operational Land Imager) data sharpened to 15 m. The Support Vector Machine (SVM) classifications were applied to the 10-period Normalized Difference Vegetation Index (NDVI) series. Results: It is shown that agriculture in Morocco is highly dependent on irrigation. In the classified map, it can be observed that the southern region, a zone with a semi-arid climate, which generally relies on irrigation, is very developed in agriculture, whereas in the north most of the soil is bared with cereals that mainly depend on rainfall. Conclusion: The possible water shortage in the region puts food availability in Morocco at risk of inadequacy. Food security depends on the availability of water, a natural resource at risk of extinction. Therefore, strategies to reduce the risk of agricultural drought must be at the forefront of Moroccan policies.

关键词： Water Availability Landsat-8 OLI Crop Mapping Plain de Tadla Morocco

Prevalence of Tick Infestations and Tick-Borne Diseases in Cattle in Cameroon

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Open Journal of Animal Sciences 2023年第4期13卷 560-573页

作者： Hamidou Hayatou Félix Meutchieye fatima ezzahra Amarir Abdelkbir Rhalem Mohammed Bouslikhane Julius Awah-Ndukum Biotechnology and Bio-Informatics Research Unit Faculty of Agronomy and Agricultural Sciences University of Dschang Dschang Cameroon Laboratory of Parasitology Department of Pathology and Veterinary Public Health Hassan II Agronomy and Veterinary Institute (IAV) Rabat Morocco Laboratory of Microbiology Epidemiology and Pathology of Animal Emerging and Re-Emerging Diseases Research Unit Hassan II Agronomy and Veterinary Institute (IAV) Rabat Morocco Animal Physiology and Health Research Unit Department of Animal Science Faculty of Agriculture and Agricultural Sciences University of Dschang Dschang Cameroon

Ticks induce huge production and economic losses in the livestock industry and create serious environmental, animal and human health problems. The study was carried out to characterize tick species and determine the prevalence of tick infestation and tick-borne diseases in cattle in Cameroon. Tick and blood samples were collected from a total of 742 animals and analyzed to determine the type of tick and haemoparasites using standard procedures. Overall, four tick species namely Amblyomma variegatum (75.09%), Rhipicephalus microplus (19.43%), Rhipicephalus decoloratus (0.88%) and Hyalomma marginatum (0.18%) and six blood disease agents including Anapalasma marginale (11.29%), Ehrlichia ruminantium (3.52%), Babesia bovis (1.32%), Babesia major (0.44%), Anaplasma phagocytophilum (0.29%) and Dermatophilus congolensis (3.37%). Various co-infections were recorded and the predominant associations were Amblyomma variegatum-Rhipicephalus microplus (4.06%) and Amblyomma variegatum-Hyalomma marginatum (0.36%);Anaplasma-Ehrlichia (12%), Anaplasma-Dematophylus (8%), Babesia-Anaplasma-Ehrlichia (14%) and Babesia-Anaplasma-Ehrlichia-Dermato-phylus (5%). Breed, sex, age and locality significantly influenced the rate of tick infestation while locality, breed and age significantly influenced the detection of blood disease agents in the study.

关键词： Prevalence Tick Blood Disease Cattle Cameroon

Climate Change Trend Observations in Morocco: Case Study of Beni Mellal-Khenifra and Darâa-Tafilalt Regions

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Journal of Geoscience and Environment Protection 2018年第7期6卷 34-50页

作者： Ait Ouhamchich Kamal Karaoui Ismail Arioua Abdelkrim Kasmi Atika Elhamdouni Driss Elfiraoui fatima ezzahra Arioua Zakaria Nazi fatima Nabih Nadia Earth Sciences Department Faculty of Sciences and Technologies Béni Mella Morocco Regional Meteorology Office Béni Mellal Morocco

Despite the extreme events impact on various climate events frequency and intensity in many developing countries, there has been dearth information on daily climate trends and climatic extremes. This study comes to characterize the climate type and its evolution in Morocco, specially the two regions Beni Mellal-Khenifra and Daraa-Tafilalt. RClimdex software has been used to calculate pluvio-thermal and ombro-thermic indices in the studied stations to reveal climate type in the two regions, their evolutions, and the daily extreme temperatures and precipitations. A cartographic representation has been done for the calculated indices and climatic trends in the stations from 1970 to 2016. As results, the temperature trend for hot day’s number shows a significant increase, while the cold night’s numbers, warm sequences, and precipitation are gradually decreases especially at Khouribga and Midelt. These observed modifications influence negatively the annual rainfall total in the year, the consecutive wet days, the maximums rainy days, and the increase of consecutively dry days. As a conclusion, the Martonne aridity and ombro-thermic indices, show that the temperatures and precipitations evolutions do not induce a change in the climate type for the studied regions.

关键词： Climate Trends Precipitation Temperature RClimdex Beni Mellal-Khenifra Daraa-Tafilalt

Epidemiology and Outcome of Primary Cerebral Lymphoma in Immunocompetent Patients: A Monocentric Study

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Open Journal of Modern Neurosurgery 2022年第3期12卷 141-152页

作者： fatima ezzahra Rida Asmaa Harrach Mouna Lamchahab Mohammed Rachid Nissrine Khoubila Siham Cherkaoui Abdellah Madani Meryem Qachouh Department of Hematology and Pediatric Oncology Ibn Rochd University Hospital Center Casablanca Morocco Faculty of Medecine Hassan II University Casablanca Morocco

Primary cerebral lymphoma (PCL) is a form of extranodal non-Hodgkin’s lymphoma with a poor prognosis. Very few cohorts have been reported in the literature. It is a rare form in 1% of extranodal lymphomas, and 3% to 4% of brain tumors. The most common histological type is diffuse large B-cell lymphoma. Survival is improved by combining immunotherapy with chemotherapy. This is a descriptive retrospective study conducted at the Casablanca hematology center over a period of 9 years. The aim of this study was to report our experience by studying the clinical, paraclinical, therapeutic and evolutionary profile of patients with primary cerebral lymphoma. We present a study of 22 patients with PCL. The clinical, radiological and histological findings are shown along with the results of treatment. Patients were aged 25 - 75 years (mean 47 years) with a male predominance (77%). Computed tomography (CT) scans were performed on 16 patients (73%) and Brain magnetic resonance imaging for 16 patients (73%). Typically, lesions were multiple, isodense, and showed uniform enhancement with contrast medium. Immunocytochemical studies demonstrated 21 B-cell and 1 mantle-cell lymphomas. All patients received chemotherapy through high-dose MTX with whole brain radiotherapy (WBRT). After a median follow-up of 19 months, 54% are in complete remission, 32% have died, and 14% are lost to follow-up. Overall survival at 24 months and 36 months were 72% and 52%. The event-free survival at 24 months and 36 months were 60% and 48%. This study was to investigate the clinical features of PCNSL, and evaluate the efficacy of high-dose methotrexate (MTX)-based chemotherapy for immunocompetent Moroccan patients with PCNSL.

关键词： Primary Cerebral Lymphoma (PCL) Retrospective Study Management

Neonatal Pleuropulmonary Staphylococcal Disease: A Case Report

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Open Journal of Pediatrics 2023年第1期13卷 138-145页

作者： fatima-ezzahra Tahiri Oualid Assem Fatiha Bennaoui Nadia El Idrissi Slitine Nabila Soraa Fadl Marabih Rabou Maoulainine Department of Neonatal Resuscitation University Hospital Center Mohamed VI Marrakech Morocco Health Childhood and Development Research Team Faculty of Medicine Cadi Ayyad University Marrakech Morocco Microbiology Department University Hospital Center Mohamed VI Marrakech Morocco

Staphylococcal pleuropulmonary disease (SPP) is the localization of pathogenic staphylococcal disease in the lung and pleura and its general haematogenic consequences. This location is not primary, but follows a primary skin or mucous infection that may go unnoticed. This is a very rare phenomenon in neonatology and in the various literature reviews. Through our observation we report the clinical diagnosis of a newborn 13-day age with pleuro-pulmonary staphyloccocia point of departure cutaneous, thus the paraclinical explorations performed in our patient therapeutic management and evolutionary profile after a 3-month decline. Note that the problem of resistance of staphylococci to different antibiotics is currently a real public health problem making the choice of treatment very difficult for the clinician.

关键词： Newborn Skin Infection Respiratory Distress Meticillin-Resistant Staphylococcus Aureus Excavation Pneumothorax

Purulent Pleurisy Revealing Lymphoblastic Lymphoma Type T: A Pediatric Case Report

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Open Journal of Pediatrics 2022年第5期12卷 827-831页

作者： fatima ezzahra Tahiri Karima Elfakiri Ghizlaine Draiss Nourredine Rada Mohammed Bouskraoui Btissam Zouita Dounia Basraoui Hicham Jalal Pediatric A Department Pediatric Pulmonology Unit Mother and Child Hospital University Hospital Mohammed VI Marrakesh Marrakesh Morocco Pediatric Radiology Department Mother and Child Hospital University Hospital Mohammed VI Marrakesh Marrakesh Morocco

Lymphoma is a very common cancer in the pediatric population, and its modes of revelation are very variable. Case report: A 7-year-old patient was admitted for purulent pleurisy, whose cytological study of the pleural fluid isolated lymphoblastic cells in favor of a T-type lymphoblastic lymphoma, a very rare mode of revelation in current practice. Conclusion: Pediatric lymphoma takes on different aspects, and it is important to look for it systematically in order to ensure adequate management.

关键词： Pleural Effusion Pleural Puncture Cytology T Lymphoma