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Improving the transition capability of the low-voltage wind turbine in the sub-synchronous state using a fuzzy controller

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Clean Energy 2022年第4期6卷 682-692页

作者： Ngakan Ketut Acwin Dwijendra Abduladheem Turki jalil Azher MAbed Bashar SBashar Ahmed Kateb Jumaah Al-Nussairi Ali Thaeer Hammid Ali Shamel Khusniddin Fakhriddinovich Uktamov Faculty of Engineering Udayana UniversityBaliIndonesia80361 Faculty of Biology and Ecology Yanka Kupala State University of Grodno230023 GrodnoBelarus College of Technical Engineering The Islamic UniversityNajafIraq Department of Air Conditioning and Refrigeration Al-Mustaqbal University CollegeBabylonIraq Al-Nisour University College BaghdadIraq Al-Manara College for Medical Sciences MaysanIraq Computer Engineering Techniques Faculty of Information TechnologyImam Ja’afar Al-Sadiq UniversityBaghdadIraq Department of Chemistry Ardebil BranchIslamic Azad UniversityArdebilIran ‘Economic Security’Department Tashkent State University of EconomicsTashkent CityUzbekistan

The main problem of wind turbines is associated with induction generators in their power supply during short circuits in the *** this research,a new method is presented for the uninterrupted operation of a wind turbine equipped with an induction generator fed on both sides of feeding during network *** farms equipped with a doubly-fed induction generator(DFIG)require two abilities to allow system operators to increase *** capabilities include fault ride-through and synchronization of output force fluctuations,especially when these generators generate significant electrical power.A MATLAB®software environment has been used to evaluate and improve the performance of these turbines.A fuzzy complement(FC)controller is used to improve the performance of the *** results demonstrate that this controller limits the operation of the turbine current and voltage in the short-circuit mode *** results obtained from comparing two different modes,it can be said that ripple is 4%in the FC mode,while this parameter is equal to 10%for the proportional-integral controller.

关键词： wind turbine sub-synchronous performance fuzzy controller MATLAB

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Life History of the Lenkoran Capoeta Capoeta Gracilis （Keyserling, 1981） in the Atrak River, Northern Iran

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Journal of Life Sciences 2011年第5期5卷 369-375页

作者： Rahman Patimar Abdol-jalil Hajili Davaji Aisoltan Jorjani Department of Natural Resources Gonbad-Kavous University Gonbad 49717-99151 Iran

Within the wide distribution of Lenkoran in Iran, populations of the species inhabit variety of habitats. The authors hypothesized that each river may contribute to habitat-specific variation in life history of the fish. To test this, a total of 378 specimens of Capoeta capoeta gracilis caught in the Atrak river （northern Iran） from Dec. 2007 to Nov. 2008 were examined for life history attributes. The population has a 5-year life cycle. Weight-length relationship （WLR） was estimated as W = 0.0127TL28981 for males, W = 0.0083TL3998 for females and W = 0.0084TL3942 for the population, being allometric negative for males and positive for females and the population. The VBGF fit to back-calculated size at age data were： Lt = 22.11 （1-e-0.19（t＋135））, Lt = 25.37 （1-e-0.18（t＋125）） and Lt = 24.92 （1-e-018（1＋122）） for males, females and sexes combined respectively. Sex ratio was significant from the parity, females dominated. The reproductive season, evaluated from GSI, extended from Apr. to July, with the highest peak in May for males and in Apr. for females. The absolute fecundity ranged between 458-5,743 eggs with a mean of 1,375.06 eggs. Fecundity relative to total weight fluctuated from 14.90 to 132.58, with a mean value of 48.79 eggs·g-1. The diameter of oocytes ranged from 0.53 to 2.40 mm with a mean value of 1.46. The life history patterns of C. c. gracilis in the considered population imply that the many population characteristics of this species in the river differ markedly from those of other rivers of its range distribution in northern Iran. Probably, respond to environmental characteristics to improve fitness locally is the more suitable choice for differentiated life history strategies of the species in the river.

关键词： Capoeta capoeta gracilis age growth reproduction Atrak river Iran.

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Application of Different <i>H</i>(<i>x</i>) in Homotopy Analysis Methods for Solving Systems of Linear Equations

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Advances in Linear Algebra & Matrix Theory 2015年第3期5卷 129-137页

作者： Mohammad Hasan Khani jalil Rashidinia Sajjad Zia Borujeni Department of Mathematics Islamic Azad University Shahin Shahr Branch Isfahan Iran Department of Mathematics Islamic Azad University Central Tehran Branch Tehran Iran

In this paper, we present homotopy analysis method (HAM) for solving system of linear equations and use of different H(x) in this method. The numerical results indicate that this method performs better than the homoto... 详细信息

关键词： HAM HPM Linear System

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Isomerization of linear C5–C7 over Pt loaded on protonated fibrous silica@Y zeolite（Pt/HSi@Y）

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Journal of Energy Chemistry 2019年第10期28卷 163-171页

作者： S.Triwahyono A.A.jalil S.M.Izan N.S.Jamari N.A.A.Fatah Faculty of Science Universiti Teknologi Malaysia81310 UTM Johor BahruJohorMalaysia School of Chemical and Energy Engineering Faculty of EngineeringUniversiti Teknologi Malaysia81310 UTM Johor BahruJohorMalaysia Centre of Hydrogen Energy Institute of Future EnergyUniversiti Teknologi Malaysia81310 UTM Johor BahruJohorMalaysia

A novel fibrous silica Y zeolite (HSi@Y) loaded with Pt has been studied based on its ability to produce protonic acid sites originating from molecular hydrogen. The Pt/HSi@Y was prepared using seed assisted crystallization followed by protonation and Pt-loading. The product formed had a spherical morphology with bicontinuous lamellar with a diameter in the range of 500-700 nm. The catalytic activity of the Pt/HSi@Y has been assessed based on light linear alkane (C5-C7) isomerization in a micro-catalytic pulse reactor at 423-623 K. A pyridine IR study confirmed that the introduction of fibrous silica on Y zeolite increased the Lewis acid sites corresponding with the formation of extra-framework Al which led to the generation of more protonic acid sites. A hydrogen adsorbed IR study showed that the protonic acid sites which act as active sites in the isomerization were formed via dissociative-adsorption of molecular hydrogen releasing electrons to the nearby Lewis acid sites. Thus, it is suggested that the presence of Pt and HSi@Y with a high number of Lewis acid as well as weak Bronsted acid sites improved the activity and stability in C5, C6 and C7 isomerization via hydrogen spill-over mechanism.

关键词： Pt/HSi@Y Fibrous silica Y zeolite Acidic sites C5-C7 isomerization

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Application of Vortex Generators to Remove Heat Trapped in Closed Channels

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Fluid Dynamics & Materials Processing 2023年第1期19卷 15-24页

作者： Alim Al Ayub Ahmed Salim Oudah Mezan Binyamin Murtadha Doghiam Abdullah Elena Tesleva Linar G.Akhmetov Rustem Zalilov Mustafa M.Kadhim Abduladheem Turki jalil School of Accounting Jiujiang UniversityJiujiang332000China General Directorate of Education in Al-Muthanna Governorate Ministry of EducationSamawah66001Iraq Department of Mechanical Engineering Faculty of Science and TechnologyUniversitas Muhammadiyah Kalimantan TimurSamarinda75124Indonesia College of Petroleum Engineering Al-Ayen UniversityThi-Qar64001Iraq National Research Tomsk Polytechnic University Tomsk634050Russia Kazan Federal University Kazan420008Russian Nosov Magnitogorsk State Technical University Magnitogorsk455000Russia Department of Dentistry Kut University CollegeKutWasit52001Iraq College of Technical Engineering The Islamic UniversityNajaf7003Iraq Department of Pharmacy OsolAldeen University CollegeBaghdad993P+PWXIraq Faculty of Biology and Ecology Yanka Kupala State University of GrodnoGrodno230023Belarus

The utilization of vortex generators to increase heat transfer from cylinders installed inside a duct is *** particular,a channel containing eight cylinders with volumetric heat sources is considered for different values of the Reynolds *** effective possibility to use vortex generators with different sizes to increase heat transfer and,consequently,reduce the surface temperature of the cylinders is ***,the amount of pressure drop inside the channel due to the presence of vortex generators is considered and compared with the cases without vortex *** results show that although the addition of generators increases the pressure drop,it strongly contributes to increase the heat transfer coefficient inside the duct(up to 80–90%).

关键词： Vortex generators heat trapped temperature of hot surfaces heat transfer

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Solving the Challenges of Pervasive Computing

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Journal of Computer and Communications 2015年第9期3卷 41-50页

作者： Syed Muqsit Shaheed jalil Abbas Asif Shabbir Fayyaz Khalid Department of Computer Science & IT University of Lahore Lahore Pakistan Department of Computer Science& IT Government Collage University Faisalabad (Layyah Campus) Layyah Pakistan Department of Computer Science & IT University of Gujrat Gujrat Pakistan

Modern research emphasizes Pervasive Computing change faces, learning cultures, structures, communications, intellectual properties, information securities, data presentations and web dis-plays to make attraction for human interaction. Pervasive systems have a broad range of applica-tions but it is relatively challenging for pervasive applications to meet emergence into existing physical environment and newly built structure requirements. Due to their interaction to gather information and change the environment via activating devices independently is highlighted. Se-curity of the pervasive devices and applications which control our activities has primary importance and will be destroyed, if the pervasive system operations are not secure. There is a need to improve the security measures for data to travel rapidly, unbroken, unchanged and invisible by deceptive recipients. Pervasive Computing allows users to get information and services access anytime and anywhere but need to discuss issues and solutions to deliver secure information with privacy and trust. Possible solutions for these challenges of Pervasive Computing interaction between human are emphasized. A collection of papers and articles have been collected in order to investigate the previous study of Pervasive Computing interaction and its challenges. Is it possible for us to understand what the scientific world will be close to generate new avenues? Expectations of future bring new openings for user interaction with systems, data, information and the environments in which they live, work and play.

关键词： Pervasive Computing Interaction Human Computer Interaction Challenges Security Trust Privacy

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Recent Development of Sustainable Ecological Flame Retardant Textile Composite Material: A Review

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Journal of Materials Science and Chemical Engineering 2022年第6期10卷 30-44页

作者： Golam Mahmud Faysal Md. Arefin Kowser Mohammad Abdul jalil Department of Textile Engineering Northern University Bangladesh Dhaka Bangladesh Department of Mechanical Engineering Dhaka University of Engineering & Technology (DUET) Gazipur Bangladesh Department of Textile Engineering Khulna University of Engineering & Technology (KUET) Khulna Bangladesh

The ecological and sustainable product is the demand of the present world. But it was not possible to produce an ecological and sustainable product for all sectors as the world requires now. The synthetic material is used to produce flame retardant materials due to the unavailable sustainable ecological flame-retardant material. But different researchers are trying to produce sustainable ecological flame-retardant material. This research found that the Spinach leaves Juice, banana pseudostem sap (SAP) and eggshell powder have flame retardant properties. Different literature shows that the ash also has flame retardant properties. So researcher suggested developing the composite material from the above materials with cotton fibres. It may be more effective as fire-retardant composite materials.

关键词： Sustainability Ecology Flame Retardant Material

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E-commerce Online Book Store and It's Security Research

E-commerce Online Book Store and It's Security Research

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作者： Mohammed Radian Saleh Abdul jalil 中南大学

学位级别：硕士

随着网络技术的发展,Internet已成为最具市场潜力的技术领域,使用Web技术设计的数据库应用软件,是目前Internet市场的技术中坚,各种Web应用如电子商务网站系统等都采用这种方式实现。网上书店电子商务系统,是一个立足于网络,以书籍为商... 详细信息

随着网络技术的发展,Internet已成为最具市场潜力的技术领域,使用Web技术设计的数据库应用软件,是目前Internet市场的技术中坚,各种Web应用如电子商务网站系统等都采用这种方式实现。网上书店电子商务系统,是一个立足于网络,以书籍为商品的专业性网上购物网站。系统同时具有买卖书籍等功能为书籍的流通提供了一个高效的交易平台。本文从计算机安全基础和基本原理,BSMS系统的设计基础出发,详细介绍了基于B/S结构的网上书店电子商务系统的开发和实现,讨论了系统开发和技术路线的选择,详细介绍了电子商务的设计与实现过程,在此基础上详细讨论电子商务系统的安全风险和解决系统安全的安全技术策略与数据库的安全策略,最后系统设计了安全程序来保护网站数据的安全。本文内容分为六章,第一章主要介绍了电子商务到现在所用的技术背景与实现,第二章介绍了网上书店电子商务系统设计,主要是模块设计还有流程图,第三章、第四章和第五章给出网上书店电子商务系统的总体设计思路,网站的实现过程以及网站的安全性,数据库安全性分析,网站页面的展示,测试运行状况,最后是本论文的结论、参考文献和致谢。

关键词： B/S结构网上书店系统数据库设计系统安全

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Does perioperative prostaglandin E1 affect survival of patients with esophageal cancer?

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World Journal of Gastrointestinal Surgery 2012年第12期4卷 284-288页

作者： Fahimeh Farrokhnia jalil Makarem Habibollah Mahmoodzadeh Nazanin Andalib Department of Anesthesiology the Cancer Institute Imam Khomeini Medical Center Tehran University of Medical Sciences Tehran 15614 Iran Department of Anesthesiology and Intensive Care Imam Khomeini Medical Center Tehran University of Medical Sciences Tehran 15614 Iran Department of Surgery the Cancer Institute Imam Khomeini Medical Center Tehran University of Medical Sciences Tehran 15614 Iran School of Biology Campus of Science University of Tehran Tehran Iran

AIM: To detect the effect of intraoperative prostaglandin E1 (PGE1) infusion on survival of esophagectomized patients due to cancer. METHODS: In this preliminary study, a double blinded placebo based clinical trial was performed. Thirty patients with esophageal cancer scheduled for esophagectomy via the transthoracic approach were randomized by a block randomization method, in two equal groups: PGE1 group - infusion of PGE1 (20 ng/kg per minute) in the operating room and placebo group - saline 0.9% with the same volume and rate. The infusion began before induction of anesthesia and finished just before transfer to the intensive care unit. The patients, anesthetist, intensive care physicians, nurses and surgeons were blinded to both study groups. All the patients were anesthetized with the same method. For postoperative pain control, a thoracic epidural catheter was placed for all patients before induction of anesthesia. We followed up the patients until October 2010. Basic characteristics, duration of anesthesia, total surgery and thoracotomy time, preoperative hemoglobin, length of tumor, grade of histological differentiation, disease stage, number of lymph nodes in the resected mass, number of readmissions to hospital, total duration of readmission and survival rates were compared between the two groups. Some of the data originates from the historical data reported in our previous study. We report them for better realization of the follow up results. RESULTS: The patients’ characteristics and perioperative variables were compared between the two groups. There were no significant differences in age (P = 0.48), gender (P = 0.27), body mass index (P = 0.77), American Society of Anesthesiologists physical status more than?I?(P = 0.71), and smoking (P = 0.65). The PGE1 and placebo group were comparable in the following variables: duration of anesthesia (277 ± 50 vs 270 ± 67, P = 0.86), duration of thoracotomy (89 ± 35 vs 96 ± 19, P = 0.46), duration of operation (234 ±

关键词： Prostaglandin E1 Esophagectomy Cancer Survival Surgery

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Theories in Spin Dynamics of Solid-State Nuclear Magnetic Resonance Spectroscopy

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World Journal of Nuclear Science and Technology 2015年第1期5卷 27-42页

作者： Eugene S. Mananga jalil Moghaddasi Ajaz Sana Mostafa Sadoqi Physics and Technology Department BCC CUNY New York USA Physics Department St. John’s University of New York City New York USA

This short review article presents theories used in solid-state nuclear magnetic resonance spectroscopy. Main theories used in NMR include the average Hamiltonian theory, the Floquet theory and the developing theories are the Fer expansion or the Floquet-Magnus expansion. These approaches provide solutions to the time-dependent Schrodinger equation which is a central problem in quantum physics in general and solid-state nuclear magnetic resonance in particular. Methods of these expansion schemes used as numerical integrators for solving the time dependent Schrodinger equation are presented. The action of their propagator operators is also presented. We highlight potential future theoretical and numerical directions such as the time propagation calculated by Chebychev expansion of the time evolution operators and an interesting transformation called the Cayley method.

关键词： Average Hamitonian Theory Floquet Theory Fer Expansion Chebychev Expansion Caley Transformation

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