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An improved Reactive Power Sharing in an isolated Microgrid with a Local Load Detection

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中国电气工程学报(英文) 2023年第2期9卷 14-26页

作者： issam A.Smadi Luay i.Shehadeh Department of Electrical Engineering Jordan University of Science and TechnologyIrbid 22110Jordan

Accurate reactive power sharing is one of the main issues in isolated microgrids to avoid circulating currents and overloading small distributed generation(DG)units.A simple and enhanced method for improving reactive power sharing among parallel-connected DG systems in an isolated microgrid was *** proposed method uses a compensator term with an integral action to minimize the reactive power-sharing error internally without any need for communication or information shared among the DG ***,a small disturbance carrying part of the reactive power-sharing error is injected into the active power-droop controller,maintaining the essential system parameters within their allowable ***,a simple compensation trigger system is proposed to effectively detect any local load change in the network and provide compensation gains to activate the proposed control *** stability of the proposed method was verified and analyzed using a detailed small-signal ***,the effectiveness and robustness of the proposed method were validated through comprehensive simulation studies and comparisons with other related techniques.

关键词： Adaptive droop distributed generation(DG) droop control microgrid power management reactive power-sharing

Preparation and photocatalytic property of Fe_(2)O_(3)/ZnO composites with superhydrophobicity

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international Journal of Minerals,Metallurgy and Materials 2021年第6期28卷 1072-1079页

作者： Muntadher i.Rahmah raad S.Sabry Wisam J.Aziz Physics Department College of ScienceMustansiriyah UniversityBaghdad 10052Iraq

A facile approach was developed to construct Fe_(2)O_(3)-modified ZnO micro/nanostructures with excellent superhydrophobicity and photocatalytic *** effects of stearic acid(SA)and Fe_(2)O_(3) on the morphological characteristics,water contact angle(WCA),and photocatalytic degradation were *** results showed that WCA increased from 144°±2°to 154°±2°when the weight of SA increased from 5 to 20 mg because of the formation of a hierarchical or rough ***,Fe_(2)O_(3)-modified ZnO micro/nanostructure surfaces before and after SA treatment(20 mg)were chosen to evaluate the photodegradation of methylene blue(MB)dye under the support of visible *** degraded after 80 min of irradiation,and its photodegradation efficiencies were 91.5%at the superhydrophobic state and 92%at the hydrophilic *** improvement in photocatalytic activity at both states might be attributed to an increase in surface area and improvement in charge carrier separation.

关键词： nano composites stearic acid superhydrophobic photocatalytic self-cleaning

Effectiveness of plant growth-promoting rhizobacterium Pantoea sp. BRM17 in enhancing canola growth on phosphogypsum-amended soil

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Pedosphere 2020年第4期30卷 570-576页

作者： Houda TRiFi issam BENSALEM Naima KOLSi BENZiNA Amine FOURATi Maria Clara COSTA Wafa ACHOUAK Haitham SGHAiER Mouldi SAiDi Laboratory of Biotechnology and Nuclear Technology(LR16CNSTN01) National Center for Nuclear Sciences and Technology(CNSTN)Sidi Thabet Technopark 2020(Tunisia) Faculty of Sciences of Bizerte Carthage UniversityJarzouna 7021(Tunisia) Soil Sciences and Environment Laboratory National Institute of Agronomy of TunisiaTunis Mahrajene 1082(Tunisia) Tunisian Chemical Group Route de Gabes Km 3.5Sfax 3018(Tunisia) Centro de Ciencias do Mar Universidade do AlgarveCampus de GambelasFaro 8005-139(Portugal) Laboratory of Microbial Ecology of the Rhizosphere and Extreme Environment CEA CadaracheSaint Paul Lez Durance 13108(France) Laboratory of Energy and Matter for Development of Nuclear Sciences(LRJ6CNSTN02) National Center for Nuclear Sciences and Technology(CNSTN)Sidi Thabet Technopark 2020(Tunisia) Laboratory of Biotechnology and Bio-Georesources Valorization(LR1iES31) National Center for Nuclear Sciences and Technology(CNSTN)Sidi Thabet Technopark 2020(Tunisia)

Dear Editor,Phosphogypsum(PG)is the main by-product generated during phosphoric acid production from mineral *** contains mainly calcium sulfate dehydrate(CaSO4:2H2O),phosphate,fuoride,heavy metals,and radionuclides(Elloumi et al.,2015).Around 170×10^6 t PG is produced annually worldwide,although PG management is an environ-mental concern in several countries.

关键词： annually soil metals

An unusual Monteggia equivalent type 1 lesion： Diaphyseal ulna and radius fractures with a posterior elbow dislocation in a child

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Chinese Journal of Traumatology 2018年第2期21卷 122-124页

作者： Lassaad Hassini Aymen Saidi Boujemaa Touati Aymen Ben Fradj issam Aloui Abderrazek Abid Department of Orthopaedic Surgery University Hospital 5000 Monastir Tunisia

in this report, we describe an extremely unusual Monteggia equivalent type 1 lesion in a 10-year-old boy following a fall from a height of i m. On the plain radiographs, our patient had a particular Monteggia equivalent type 1 injury associating a posterior elbow dislocation with diaphyseal radius and ulna fractures. The patient was treated by closed reduction technique. At six months of follow-up, the frac- tures were consolidated and the elbow was stable. To our knowledge, only 8 adult cases and one pae- diatric observation with similar lesions had been reported through medical literature. Therefore, the aim of our case report is to remind this rare entity and also to provide a comprehensive review of the literature related to this uncommon lesion.

关键词： Monteggia equivalent Children Forearm fracture Elbow dislocation

Optimized Convolutional Neural Network for Automatic Detection of COViD-19

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Computers, Materials & Continua 2022年第1期70卷 1159-1175页

作者： K.Muthumayil M.Buvana K.R.Sekar Adnen El Amraoui issam Nouaouri Romany F.Mansour Department of information Technology PSNA College of Engineering and TechnologyDindigul624622TamilnaduIndia Department of Computer Science&Engineering PSNA College of Engineering and TechnologyDindigul624622India School of Computing SASTRA Deemed UniversityThanjavur613401India Univ.Artois U.R.3926Laboratoire de Génie Informatique et d’Automatique de l’Artois(LGI2A)F-62400BéthuneFrance Department of Mathematics Faculty of ScienceNew Valley UniversityEl-Kharga72511Egypt

The outbreak of COViD-19 affected global nations and is posing serious challenges to healthcare systems across the *** use X-Rays or Computed Tomography(CT)images to confirm the presence of ***,image processing techniques play an important role in diagnostic procedures and it helps the healthcare professionals during critical *** current research work introduces Multi-objective Black Widow Optimization(MBWO)-based Convolutional Neural Network i.e.,MBWOCNN technique for diagnosis and classification of *** model involves four steps such as preprocessing,feature extraction,parameter tuning,and *** the beginning,the input images undergo preprocessing followed by CNN-based feature ***,Multi-objective Black Widow Optimization(MBWO)technique is applied to fine tune the hyperparameters of ***,Extreme Learning Machine with autoencoder(ELM-AE)is applied as a classifier to confirm the presence of COViD-19 and classify the disease under different class *** proposed MBWO-CNN model was validated experimentally and the results obtained were compared with the results achieved by existing *** experimental results ensured the superior results of the ELM-AE model by attaining maximum classification performance with the accuracy of 96.43%.The effectiveness of the technique is proved through promising results and the model can be applied in diagnosis and classification of COViD-19.

关键词： COViD-19 classification CNN hyperparameter tuning black widow optimization

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利用合金低温生长晶体硅的研究进展

材料导报 2017年第1期31卷 110-115页

作者：马玉升张立峰李亚琼 Rowaid raad Muslim 北京科技大学冶金与生态工程学院北京100083

基于光伏行业对低成本晶体硅材料的巨大需求,晶体硅低温生长技术逐渐受到人们的青睐。该技术是在低温下将硅与低熔点金属进行共熔化处理,结合液相外延、合金定向凝固等技术生长、制备晶体硅。首先阐述了晶体硅低温制备原理,并对其生长... 详细信息

基于光伏行业对低成本晶体硅材料的巨大需求,晶体硅低温生长技术逐渐受到人们的青睐。该技术是在低温下将硅与低熔点金属进行共熔化处理,结合液相外延、合金定向凝固等技术生长、制备晶体硅。首先阐述了晶体硅低温制备原理,并对其生长行为、受控因素和应用现状进行综述,指出了目前各自存在的问题与难点,最后对下一阶段晶体硅生长技术的研究重点和发展前景进行了展望。

关键词：晶体硅合金低温生长技术

Effect of Dye Structure on the Photodegradation Kinetic Using TiO2Nanoparticles

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Journal of Materials Science and Chemical Engineering 2017年第6期5卷 31-45页

作者： Hawraa Ayoub Mounir Kassir Mohammad raad Houssein Bazzi Akram Hijazi Laboratory of Materials Catalysis Environment and Analytical Methods Faculty of Sciences I Lebanese University Beirut Lebanon Platform for Research and Analysis in Environmental Sciences (PRASE) Doctoral School of Science and Technology (EDST) Lebanese University Beirut Lebanon

in this study the effect of pH, adsorption behavior and the chemical struc-tures of two dyes (Methyl Orange and Bromothymol Blue) on the photo-degradation rate constant, was investigated. Adsorption isotherm shows that the adsorption amount of dyes on TiO2 surface is highly related to the pH of the solution and to the pKa of each dye. in acidic medium the adsorption percentage of Methyl Orange on TiO2 surface was 76% facing 5% for Bromothymol Blue. The kinetic study shows compatibility between the degradation rate constant and the adsorption percentage on the surface. in basic medium the adsorption percentage of Methyl orange and Bromothymol Blue is similar while the degradation rate of Methyl orange is two times faster than that of Bromothymol Blue which reveals the role of chemical structure in the photodegradation rate.

关键词： Photocatalysis Titanium Dioxide Adsorption Dyes Depollution

Mesenchymal Mandibular Chondrosarcoma: A Case Report and Review of Literature

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Open Journal of Stomatology 2018年第4期8卷 127-134页

作者： Abdeljalil Abouchadi Hind Taoufik Adil Arrob Oussama Nacir issam Rharrassi Department of Maxillo Facial Stomatology and Plastic Surgery Avicenne Military Teaching Hospital Marrakech Morocco

introduction: Chondrosarcomas (CS) are malignant cartilaginous tumors of rare maxillary localization. Their evolution is generally slow in time. They have a high tendency for locoregional recurrence after surgical treatment. Their prognosis depends on their degree of differentiation and the quality of resection. The authors report a clinical case of mesenchymal mandibular chondrosarcoma (MC), which is considered to be a subtype of CS, and specify the epidemiological, diagnostic, therapeutic and evolutionary features of this tumor. Case Report: A 73-year-old woman reported in February 2018 in our department complained of a slowly enlarging mass involving the right part of the lower jaw for the last 18 months. On examination a firm multilobular painful mass was palpated with cortical expansion, occupying the right side. A CT scan with 3D reconstruction was achieved and showed osteolysis lesions and cortical thickening. The mass biopsy for histological examination found a grade i well-differentiated bone chon-drosarcoma. We performed a hemi-mandibulectomy with complete resection of the tumor. The anatomopathologic examination of the resection specimen was in favour of a grade ii mesenchymal chondrosarcoma. No radiotherapy was needed. The patient’s follow up was uneventful. Discussion: CS grading is the key to its management. Low grade CS (grades i and ii) of the facial skeleton are luckily the most common, they are best treated with a local resection using 1.5 cm margins for bone and soft tissue. According to published literature, CS was historically considered as a radio resistant tumor. Radiotherapy and chemotherapy were therefore mainly reserved for high-grade tumors and for non-operable lesions. However, radical local surgery appears to be the treatment of choice for low grade chondrosarcoma. Conclusion: CS’s definitive diagnosis depends on appropriate radiographic evaluation along with adequate biopsy with meticulous histopathological examination and adjunctive im

关键词： Chondrosarcoma Mandible Mesenchymal Tumor

induced Systemic Resistance in Two Genotypes of Brassica napus(AACC) and Raphanus oleracea(RRCC) by Trichodermaisolates against Sclerotinia sclerotiorum

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American Journal of Plant Sciences 2015年第10期6卷 1662-1674页

作者： Jawadayn Talib Alkooranee Tamarah raad Aledan Jun Xiang Guangyuan Lu Maoteng Li College of Life Science and Technology Huazhong University of Science and Technology Wuhan China Plant Protection Department College of Agriculture University of Basrah Basrah Iraq Hubei Key Laboratory of Economic Forest Germplasm improvement and Resources Huanggang China Hubei Collaborative innovation Center for the Characteristic Resources Exploitation of Dabie Mountains Huanggang China Oil Crops Research institute Chinese Academy of Agricultural Sciences Wuhan China

Two different species, Trichoderma viride TV10 and Trichoderma harzianum TH12 from 30 Trichoderma isolates were selected out based on their high growth inhibition of the phytopathogen Sclerotinia sclerotiorum (Lib) de Bary, which reached 84.44% and 100%, respectively. Their untreated culture filtrates (CF) and culture filtrates treated with heat (CFH) also were tested for growth inhibition of the pathogen in potato dextrose agar (PDA). Morphological and molecular characterisation by internal transcribed spacer (iTS) PCR provided consistent identification of these isolates. The degree of infection and disease index (Di) of S. sclerotiorum were examined in Brassica napus (AACC) and Raphanus alboglabra (RR) and Brassica alboglabra (CC). The results revealed that Raphanus alboglabra showed higher disease resistance than that of B. napus. Biotic elecitors T. harzianum TH12 and T. viride TV10 and their CF and CFH demonstrated the ability to cause induced systemic resistance (iSR) in B. napus and Raphanus alboglabra against sclerotinia stem rot (SSR) disease. Furthermore, a high ability to reduce the degree of infection and Di in B. napus with the biotic elicitors T. harzianum TH12 and T. viride TV10 was observed, with numbers reaching 7.22% to 6.67% and 17.78% to 11.67%, respectively. When CF were used, reached 20.00% to 16.67% and 33.33% to 23.33%, respectively;with CFH, values reached 35.00% to 21.67% and 37.78% to 28.33%, respectively. While in Raphanus alboglabra the degree of infection and Di reached 0.00% and 0.00% with all biotic elicitors treatments. These results show that biotic elicitor treatments significantly (P B. napus and Raphanus alboglabra ranked as most effective. This study showed for the first time the ability of genotype Raphanus alboglabra (RRCC) to demonstrate resistance against S. sclerotiorum with or without treatment by biotic elicitors and the ability of genotype B. napus (AACC) to demonstrate resistance to the pathogen after treatment with bio

关键词： Brassica napus Raphanus alboglabra induced Systemic Resistance Sclerotinia sclerotiorum Trichoderma spp.