U.Porto Journal of Engineering最新文献_第7页

Roadway and Traffic Attributes Influencing Occupancy Time of Minor-Road Right-Turning Vehicles at Urban Uncontrolled Intersections 道路和交通属性对城市非受控交叉口右转车辆占用时间的影响

U.Porto Journal of Engineering Pub Date : 2023-01-23 DOI: 10.24840/2183-6493_009-001_001468

Ramesh babu Kota, A. Mehar

引用次数: 0

Effect of PET Resin as Cement Substitute on Properties of Cement Mortar Subjected to Different During Conditions PET树脂替代水泥对不同使用条件下水泥砂浆性能的影响

U.Porto Journal of Engineering Pub Date : 2023-01-23 DOI: 10.24840/2183-6493_009-001_001374

S. Waysal, Y. Patil, B. Dholakiya

引用次数: 0

Contaminants of Emerging Concern 日益受到关注的污染物

U.Porto Journal of Engineering Pub Date : 2023-01-23 DOI: 10.24840/2183-6493_009-001_001282

Mateus Pereira Caixeta

{"title":"Contaminants of Emerging Concern","authors":"Mateus Pereira Caixeta","doi":"10.24840/2183-6493_009-001_001282","DOIUrl":"https://doi.org/10.24840/2183-6493_009-001_001282","url":null,"abstract":"Contaminants of emergent concern (CECs) in aquatic ecosystems entail a potential risk for the environment, due to their persistent behavior and adverse effect on living organisms during a long-term exposition, even at residual concentrations. Conventional Wastewater Treatment Plants (WWTPs) are not designed to eliminate CECs properly because the treatment technologies are not enough to remove these contaminants, which generates environmental and technological challenges. In this review, the sources of CEC contaminants to aquatic environments have been discussed in detail. Understanding the occurrences and pathways of CECs, their adverse effects on the environment, and removal techniques is a valuable key for the proper maintenance of global ecological health. This scenario was more explored through the harmful impacts of CECs on the environment, including their toxic effects and permissible limits. This review gathers information about CECs occurrences from a global perspective compiling information about their ecotoxicological effects, conventional and advanced treatment methods towards their mitigation. Advanced hybrid treatment techniques such as membrane bioreactor with ozonation, reverse osmosis, and ultrafiltration have shown to be a promising alternative for CECs removal. New advanced oxidation processes with assisted and non-assisted UVC/H2O2 systems with TiO2 photocatalysis were also demonstrated as a good approach to be implemented in the CECs mitigation strategies.","PeriodicalId":36339,"journal":{"name":"U.Porto Journal of Engineering","volume":"82 2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78277755","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Analysis of Skewing Effects on Radial Force for Different Topologies of Switched Reluctance Machines: 6/4 SRM, 8/6 SRM, and 12/8 SRM 6/4 SRM、8/6 SRM和12/8 SRM三种开关磁阻电机拓扑结构的倾斜对径向力的影响分析

U.Porto Journal of Engineering Pub Date : 2023-01-23 DOI: 10.24840/2183-6493_009-001_001134

Zeineb Touati, Rui Esteves Araújo, I. Mahmoud, A. Khedher

{"title":"Analysis of Skewing Effects on Radial Force for Different Topologies of Switched Reluctance Machines: 6/4 SRM, 8/6 SRM, and 12/8 SRM","authors":"Zeineb Touati, Rui Esteves Araújo, I. Mahmoud, A. Khedher","doi":"10.24840/2183-6493_009-001_001134","DOIUrl":"https://doi.org/10.24840/2183-6493_009-001_001134","url":null,"abstract":"Reducing vibration and noise in electrical machines for a given application is not an easy task, especially when the application imposes some restrictions. There are many techniques for reducing vibration based on design or on control. Switched reluctance motors (SRMs) have a double-saliency structure, which results in a radial pulsation force. Consequently, they cause vibration and acoustic noise. This paper investigates the correlation between the radial force and the skew angle of the stator and/or rotor circuits. The analysis is computed from two-dimensional (2D) transient magnetic finite-element analysis (FEA) of three machine topologies, namely the 12/8 three-phase SRM, the 6/4 three-phase SRM and the 8/6 four-phase SRM. Compared to SRM, these topologies have the same basic dimensions (stator outer diameter, rotor outer diameter, and length) and operate in the same magnetic circuit saturation. The flux linkage and torque characteristics of the different motors are presented. The radial force distributed on the stator yoke under various skewing angles is studied extensively by FEA for the three machines. It is also demonstrated the effect of skewing angles in the reduction of radial force without any reduction in torque production.","PeriodicalId":36339,"journal":{"name":"U.Porto Journal of Engineering","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88020626","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Topological Optimization of a Metal Extruded Doorhandle using nTopology 基于nTopology的金属挤压门把手拓扑优化

U.Porto Journal of Engineering Pub Date : 2023-01-23 DOI: 10.24840/2183-6493_009-001_001620

Margarida Mata, M. Pinto, Jose M. Costa

引用次数: 1

Socio-Environmental Sustainability of Traditional Courtyard Houses of Lucknow and Varanasi 勒克瑙和瓦拉纳西传统四合院的社会环境可持续性

U.Porto Journal of Engineering Pub Date : 2023-01-23 DOI: 10.24840/2183-6493_009-001_001438

Lalit Akash Verma, Farheen Bano

引用次数: 0

Security and Energy Consumption Considerations of Electric Vehicles Integration in Smart Grids 智能电网中电动汽车集成的安全与能耗考虑

U.Porto Journal of Engineering Pub Date : 2023-01-23 DOI: 10.24840/2183-6493_009-001_001382

Shahab Sabzi, L. Vajta

{"title":"Security and Energy Consumption Considerations of Electric Vehicles Integration in Smart Grids","authors":"Shahab Sabzi, L. Vajta","doi":"10.24840/2183-6493_009-001_001382","DOIUrl":"https://doi.org/10.24840/2183-6493_009-001_001382","url":null,"abstract":"Over the past years, electric vehicles (EVs) have attracted great attention worldwide. Using EVs helps reduce CO2 emissions and the use of fossil fuels and motivates the nations toward a more sustainable future where the consumed energy matters. EVs are the main part of E-mobility; therefore, the EV integration problem is very important. This paper discusses the importance of EV integration in smart grids, and challenges toward the electrification of future cars are investigated. The two main categories for challenges are security and utility-related challenges. Security challenges deal with the communication means in the e-mobility, while grid-related challenges correspond to the energy that must be supplied and delivered to the vehicles. Security challenges come from the devastating actions from outside threats such as hacks, but the grid-related challenges come from the system's nature and can be dealt with using physical and software-based methods. While the challenges of security and grid are investigated, since our future work focuses on energy and cost optimization, the solution of grid-related challenges will be covered.","PeriodicalId":36339,"journal":{"name":"U.Porto Journal of Engineering","volume":"92 1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89853448","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Educational Requirements for Aviation and Automotive Engineering 航空与汽车工程专业学历要求

U.Porto Journal of Engineering Pub Date : 2023-01-23 DOI: 10.24840/2183-6493_009-001_001396

Mikko Huhtala

{"title":"Educational Requirements for Aviation and Automotive Engineering","authors":"Mikko Huhtala","doi":"10.24840/2183-6493_009-001_001396","DOIUrl":"https://doi.org/10.24840/2183-6493_009-001_001396","url":null,"abstract":"Technical progress is rapid in aviation and automotive engineering. Even if these branches are different in many ways, they also have similarities, especially in the technical and service sectors. Quite a few technological innovations were first used in aircraft, and, after a few years, those innovations received their own applications in automotive engineering. Because of rapid technical development, it is important to determine what knowledge and skills will be needed in the future. This information also predicts the main directions for the education of future mechanics. The main focus of our study was to get respondents (N=81) – experts in the field – to consider their professional competencies from various views and in different time periods, according to the Janus Cones method. Our survey describes future professional competencies that will be necessary for successful working in aircraft technology and automotive engineering.\u0000The result of the study is that skills and knowledge need to be used widely, creatively and combined with thinking to produce a new type of knowledge for competence in a certain context. A thematic content analysis led to the components of professional competencies for aircraft technology and automotive engineering being subsumed under five common categories: vehicle technology and proficiency, quality and environment, safety and security, general skills and knowledge, and customer service. Four of these competencies are clearly context bound to aviation and automotive engineering; however, they might also be usable in other technological branches and various study programmes. General skills and knowledge were the only components that referred to general competencies. The results of this study are intended to help with planning curricula that will meet the needs of the next generation of aviation and automotive engineers.","PeriodicalId":36339,"journal":{"name":"U.Porto Journal of Engineering","volume":"49 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87947116","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Advanced Perspective on Human Detection system with Hybrid Feature Set 基于混合特征集的人体检测系统研究

U.Porto Journal of Engineering Pub Date : 2022-11-28 DOI: 10.24840/2183-6493_008.006_0013

Manikandaprabu Nallasivam, V. S

引用次数: 0

Impact of Side Friction on Saturation Flow at Signalized Intersections in Mixed Traffic Conditions 混合交通条件下信号交叉口侧摩擦对饱和流的影响

U.Porto Journal of Engineering Pub Date : 2022-11-28 DOI: 10.24840/2183-6493_008.006_0007

D. R. S. Ramireddy, S. Srikanth, K. V. R. Ravi Shankar

引用次数: 0