检索结果-南通市图书馆

Announcing the International Conference on Sustainable Energy Sources,Technologies and Systems 2023(ICSESTS-2023)

在线全文

学校读者我要写书评

暂无评论

Clean Energy 2023年第3期7卷 705-706页

作者： Ravinder Kumar mohammad hossein ahmadi School of Mechanical Engineering Lovely Professional UniversityPhagwra-144411PunjabIndia Faculty of Mechanical Engineering Shahrood University of TechnologyShahroodIran

Energy is the backbone of any society for its ***,the sustainability of society is at risk due to continuously increasing energy demand,rampant use of limited fossil fuels and their adverse impact on the environment.

关键词： Sustainable backbone environment.

The thermal analysis of the heat dissipation system of the charging module integrated with ultra-thin heat pipes

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Energy and Built Environment 2023年第5期4卷 506-515页

作者： Tingzhen Ming Xiwang Liao Tianhao Shi Kui Yin Zhiyi Wang mohammad hossein ahmadi Yongjia Wu School of Civil Engineering and Architecture Wuhan University of TechnologyWuhan 430070China China Constuction Third Bureau First Engineering Co.LTD.Wuhan 430040 China Faculty of Mechanical Engineering Shahrood University of TechnologyShahroodIran

Electric vehicles(EV)played an important role fighting greenhouse gas emissions that contributed to global *** construction of the charging pile,which was called as the"gas station"of EV,developed *** charging speed of the charging piles was shorted rapidly,which was a challenge for the heat dissipation system of the charging *** order to reduce the operation temperature of the charging pile,this paper proposed a fin and ultra-thin heat pipes(UTHPs)hybrid heat dissipation system for the direct-current(DC)charging *** L-shaped ultra-thin flattened heat pipe with ultra-high thermal conductivity was adopted to reduce the spreading thermal *** software was used to simulate the temperature and flow profiles of the new *** various factors that affected the heat dissipation performance of the system were *** results showed that the system had excellent heat dissipation capacity and achieved good temperature *** than solely relied on the fans,this new design efficiently dissipated heat with a lower fan load and less energy consumption.

关键词： ICEPAK simulation Charging pile heat transfer Ultra-thin heat pipe Chip cooling

Multi-objective optimization in a finite time thermodynamic method for dish-Stirling by branch and bound method and MOPSO algorithm

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Frontiers in Energy 2020年第3期14卷 649-665页

作者： mohammad Reza NAZEMZADEGAN Alibakhsh KASAEIAN Somayeh TOGHYANI mohammad hossein ahmadi R.SAIDUR Tingzhen MING Department of Renewable Energies Faculty of New Science and TechnologiesUniversity of TehranTehran***Iran Faculty of Mechanical Engineering and Mechatronic Shahrood University of TechnologyShahrood ***Iran Faculty of Science and Technology Sunway UniversityNo.5Jalan UniversitiBandar Sunway47500 Petaling JayaMalaysia Department of Engineering Lancaster UniversityLancasterLAI 4YWUK School of Civil Engineering and Architecture Wuhan University of TechnologyWuhan 430070China

There are various analyses for a solar system with the dish-Stirling *** of those analyses is the finite time thermodynamic analysis by which the total power of the system can be obtained by calculating the process *** this study,the convection and radiation heat transfer losses from collector surface,the conduction heat transfer between hot and cold cylinders,and cold side heat exchanger have been *** this investigation,four objective functions have been optimized simultaneously,including power,efficiency,entropy,and economic *** addition to the fourobjective optimization,three-objective,two-objective,and single-objective optimizations have been done on the dish-Stirling *** algorithm of multi-objective particle swarm optimization(MO P S O)with post-expression of preferences is used for multi-objective optimizations while the branch and bound algorithm with pre-expression of preferences is used for single-objective and multi-objective *** the case of multi-objective optimizations with post-expression of preferences,Pareto optimal front are obtained,afterward by implementing the fuzzy,LINMAP,and TOPSIS decision making algorithms,the single optimum results can be *** comparison of the results shows the benefits of MOPSO in optimizing dish Stirling finite time thermodynamic equations.

关键词： dish-Stirling finite time model branch and bound algorithm multi-objective particle swann optimization(MOPSO)

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

地热能在预热中的应用综述

Journal of Central South University 2023年第11期30卷 3519-3537页

作者： mohammad ALHUYI NAZARI Ravinder KUMAR Azfarizal MUKHTAR Ahmad Shah Hizam Md YASIR mohammad hossein ahmadi Mohammed AL-BAHRANI Faculty of New Sciences and Technologies University of TehranTehranIran School of Mechanical Engineering Lovely Professional UniversityPhagwaraPunjab 144411India Institute of Sustainable Energy Putrajaya CampusUniversiti Tenaga NasionalJalan IKRAM-UNITENKajang 43000Malaysia Faculty of Resilience Rabdan AcademyAbu DhabiUAE Faculty of Mechanical Engineering Shahrood University of TechnologyShahroodIran Chemical Engineering and Petroleum Industries Department Al-Mustaqbal University CollegeBabylon 51001Iraq

考虑到化石燃料的环境污染和成本波动等问题,发展可再生能源技术是未来可持续能源供应的必要和必然。与太阳能和风能相比,地热能在一天中的所有时间都是可利用的。这种可再生能源适用于供暖、制冷、淡水和电力的清洁供应。地热能除了作... 详细信息

考虑到化石燃料的环境污染和成本波动等问题,发展可再生能源技术是未来可持续能源供应的必要和必然。与太阳能和风能相比,地热能在一天中的所有时间都是可利用的。这种可再生能源适用于供暖、制冷、淡水和电力的清洁供应。地热能除了作为主要能源直接用于发电外,还可以作为辅助热源用于预热,减少温室气体排放,节约燃料。在这些系统中,利用地热热源的热量进行蒸汽预热。此外,地热能可用于其他能源系统,如制氢装置,用于预热电解过程中消耗的水。针对利用地热能进行预热的优势,综述了地热能预热系统的应用研究。通过这一研究可以看出,利用地热能进行预热在节约燃料和提高性能方面具有很大的潜力。上述系统的性能取决于系统的配置、钻孔规格和地热源温度等因素。通过实施优化,可以进一步改进这些系统。

关键词：地热能预热火力发电厂节约燃料

Multidisciplinary design optimization of a dual-spin guided vehicle

在线全文

学校读者我要写书评

暂无评论

Defence Technology（防务技术） 2024年第7期37卷 133-148页

作者： Jalal Karimi mohammad Reza Rajabi Seyed hossein Sadati Seyed Mahid hosseini Department of Aerospace Engineering Malek Ashtar University of TechnologyTehranIran

In this research,a Multidisciplinary Design Optimization approach is proposed for the dual-spin guided flying projectile design considering external and internal parts of the body as design *** this way,a parametric formulation is *** related disciplines,including structure,aerodynamics,guidance,and control are *** total mass,maximum aerodynamic control effectiveness,minimum miss distance,maximum yield stress in all subsystems,controllability and gyroscopic stability constraints are some of objectives/constraints taken into *** problem is formulated in All-At-Ones Multidisciplinary Design Optimization approach structure and solved by Simulated Annealing and minimax *** optimal configurations are evaluated in various *** resulted optimal configurations have met all design objectives and constraints.

关键词： Flying projectile optimal design All-at-ones multidisciplinary optimization Structure discipline Guidance and control discipline Aerodynamic discipline

Improvement of Surface Mechanical and Tribological Characteristics of L-PBF Processed Commercially Pure Titanium through Ultrasonic Impact Treatment

在线全文

学校读者我要写书评

暂无评论

Acta Metallurgica Sinica(English Letters) 2024年第6期37卷 1034-1046页

作者： Iman Ansarian Reza Taghiabadi Saeid Amini mohammad hossein Mosallanejad Luca Iuliano Abdollah Saboori Department of Materials Science and Metallurgy Imam Khomeini International University(IKIU)QazvinIran Department of Mechanical Engineering University of KashanKashanIran Integrated Additive Manufacturing Center Department of Management and Production EngineeringPolitecnico di TorinoCorso Duca Degli Abruzzi 2410129TurinItaly

Multi-pass ultrasonic impact treatment(UIT)was applied to modify the microstructure and improve the mechanical and tribological characteristics at the near-surface region of commercially pure Ti(CP-Ti)specimens produced by the laser powder bed fusion(L-PBF)*** considerably refined the L-PBF process-related acicular martensites(α′-M)and produced a well-homogenized and dense surface microstructure,where the porosity content of 1-,3-,and 5-pass UITed samples was reduced by 43,60,and 67%,*** UITed samples showed an enhancement in their near-surface mechanical properties up to a depth of about 300μ*** nanoindentation results for the 3-pass UITed sample revealed an increase of about 53,45,and 220%in its nanohardness,H/E_(r),and H_(3)/E_(r)^(2)indices,*** stylus profilometry results showed that performing the UIT removed the L-PBF-related features/defects and offered a smooth *** roughness average(R_(a))and the skewness(R_(sk))of the 3-pass UITed sample were found to be lower than those of the L-PBFed sample by 95 and 223%,*** the UIT also enhanced the material ratio,where the maximum load-bearing capacity(~100%)in as-L-PBFed(as-built)and 3-pass UITed samples was obtained at 60-and 10-µm depths,*** tribological investigations showed that applying the UIT resulted in a significant reduction of wear rate and average coefficient of friction(COF)of *** instance,under the normal pressures of 0.05 and 0.2 MPa,the wear rate and COF of the 3-pass UITed sample were lower than those of the L-PBFed sample by 65 and 58%,and 20 and 17%,respectively.

关键词： Laser powder bed fusion Ultrasonic impact treatment Commercially pure Ti(CP-Ti) Surface mechanical properties Tribological properties

Er_(2)TiO_(5)@Ag nanocomposites:Enhanced photocatalysis and bacteria inactivation,and cytotoxicity

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Rare Earths 2024年第5期42卷 851-858,I0002页

作者： Mehdi Nazeri hossein Sedaghat Reza Rafiei mohammad Amin Farzin Seyed Mostafa hosseinpour Mashkani Department of Parasitology and Mycology Kashan University of Medical SciencesKashanIran Department of Microbiology Kashan University of Medical SciencesKashanIran General Medicine Student School of MedicineKashan University of Medical SciencesKashanIran Student Research Committee Kashan University of Medical SciencesKashanIran Institute for Biomedical Materials and Devices School of Mathematical and Physical SciencesFaculty of ScienceUniversity of Technology SydneyNSW2007Australia

In this study,we successfully synthesized Er_(2)TiO_(5)@Ag nanocomposites(NCPs) using the ultrasonicmediated sol-gel technique to create a multifunctional material with enhanced photocatalytic and antibacterial *** visible light photocatalytic activities of Er_(2)TiO_(5) nanoparticles(NPs) and Er_(2)TiO_(5)@Ag NCPs were systematically evaluated under various conditions,including different concentrations of Basic Blue 41(BB 41) dye and *** results reveal a remarkable improvement in the photocatalytic degradation efficiency of Er_(2)TiO_(5)@Ag NCPs(95%) compared to Er_(2)TiO_(5) NPs(80%).Furthermore,the antibacterial efficacy of Er_(2)TiO_(5) NPs and Er2TiO_5@Ag NCPs were extensively examined against Gram-positive and Gram-negative ***,Er_(2)TiO_(5)@Ag NCPs exhibit significantly higher minimum bactericidal concentration(MBC) values compared to Er_(2)TiO_(5) *** antibacterial effect of Er_(2)TiO_(5)@Ag NCPs is particularly pronounced against *** and Pseudomonas aeruginosa,while demonstrating moderate effects on Escherichia coli and Enterococcus *** assess the biocompatibility of the synthesized materials,we investigated their internalization by MCF-7 ***,both Er_(2)TiO_(5) NPs and Er_(2)TiO_(5)@Ag NCPs are found to be effectively internalized by the cells,suggesting their potential application in biomedical ***,our study unveils the exceptional potential of Er_(2)TiO_(5)@Ag NCPs as a dual-action solution,simultaneously possessing enhanced photocatalytic efficiency and potent antibacterial *** multifunctional nanocomposite not only outperforms Er_(2)TiO_(5) and Ag but also paves the way for innovative applications in sustainable environmental remediation and advanced biomedical technologies,promising a brighter and cleaner future.

关键词： Rare earth catalysis Nanocomposite Er_(2)TiO_(5)@Ag Antibacterial activity Photocatalysis Cytotoxicity

Insight into small eyes: a practical description from phenotypes presentations to the management

在线全文

学校读者我要写书评

暂无评论

International Journal of Ophthalmology(English edition) 2024年第2期17卷 380-391页

作者： Sana Niazi Sorcha NíDhubhghaill Farideh Doroodgar Zisis Gatzioufas mohammad hossein Dehghan Translational Ophthalmology Research Center Tehran University of Medical SciencesTehran ***Iran Antwerp University Hospital Edegem 2650Belgium Faculty of Health Sciences Antwerp UniversityAntwerpen 2000EdegemBelgium Negah Aref Ophthalmic Research Center Shahid Beheshti University of Medical SciencesTehran 16666Iran University Eye Hospital Basel Basel 4031Switzerland

This narrative review aimed to have an algorithmic approach to microphthalmos by a systematic *** definition can be related to a number of special *** the more challenging cases of complex microphthalmos,relative anterior microphthalmos,and nanophthalmos,the surgeon can approach these cases more safely if they have a deep understanding of the anatomical variations and ideal formulae for intraocular lens computation and knows how to avoid intra-and post-operative *** this article,we review the criteria by which we recognize and describe pre-,intra-,and post-operative considerations,as well as discuss the ideal intraocular lenses for microphthalmos,given the intricate varieties of small eye phenotypes.

关键词： microphthalmos nanophthalmos lenses intraocular anterior chamber axial length eye cataract microcornea syndrome

Experimental Study on Improved Engineered Cementitious Composite Using Local Material

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Materials Sciences and Applications 2018年第3期9卷 315-329页

作者： Fariborz Nateghi-A mohammad hossein ahmadi Ayoub Dehghani International Institute of Earthquake Engineering and Seismology Tehran Iran Persian Gulf University Boushehr Iran

Engineered Cementitious Composite (ECC) is a cement based material with ultra-high ductility and strength in tension. This material is a kind of highperformance fiber-reinforced cementitious composite materials (HPFRCCs) reinforced with short fibers and characterized by tight multiple cracking. These characteristics of ECC make it applicable to increase the capacity and the ductility of structural elements so that structural design is economic and sustainable. This paper presents an extended evaluation of Improved Engineered Cementitious Composites (IECC) for the use in the strengthening of masonry in filled reinforced concrete frames. IECC is a mixture of cement, fly ash, water, sand, quartz powder and poly-vinyl alcohol fibers with a better quality of tensile strain rather than common ECC. Two types of fine sand and quartz powder used in this study as filler to improve ECC behavior. Also, to show the effect of fly ash on IECC properties, five different mixtures were considered with various fly ash ratios. Different mixtures of IECC using fine aggregates produced in Iran were selected to find out how the aggregates and fly ash would affect IECC performance. The results show that the optimized mixture has the best characteristics including tensile strength and strain. Also, three-dimensional diagrams were used to compare the properties of different mixtures of IECC more effectively and to represent the influence of the range of fly ash ratios so that it can be opted based on design objectives such as ECC properties, costs and structural parameters and demands. These diagrams show the behavior of IECC which its fly ash content ratio in the binder is 50% to 67%.

关键词： Improved Engineered Cementitious Composites Optimization Experimental Study Local Material