Pub Date : 2023-01-01DOI: 10.12700/aph.20.9.2023.9.4
Ciprian Bulei, Imre Kiss, Mihai–Paul Todor
: Aluminium is one of the most recyclable materials, as it can be recycled over and over again, and is one of few materials that keeps its properties after recycling. It can be re-melted and used again and again in new products, making it an environmentally friendly metal and a sustainable material. This makes aluminium an excellent material to meet the needs and challenges of different products. Also, aluminium recycling offers advantages in terms of environmental and economic benefits. Therefore, more aluminium must be collected, sorted, and returned into the economy as new products. Aluminium recycling is the process by which various scrap aluminium can reuse in products after its initial production and involves simply re-melting these scraps. This work provides an overview of the basic aluminium recycling process, using postconsumer scrap in the melting process in few laboratory experiments. Typically, postconsumer aluminium scrap is a mixture of alloys and sometimes even a mixture of metals, the main sources for aluminium scrap being the packaging, technology, construction, and the transport industry. In our experiments, different aluminium scrap sources were considered: mixed packaging aluminium scrap and used beverage can scrap, aluminium from electric cables and aluminium from collected castings. Having in view that the chemical composition is the main challenge in aluminium recycling, mass balance of main aluminium alloying elements is performed. This research provides an overview of the aluminium recycling process, from the scrap upgrading to the melting process.
{"title":"The Chemical Composition of Post-Consumer Aluminium Scrap – A Challenge in Aluminium Recycling","authors":"Ciprian Bulei, Imre Kiss, Mihai–Paul Todor","doi":"10.12700/aph.20.9.2023.9.4","DOIUrl":"https://doi.org/10.12700/aph.20.9.2023.9.4","url":null,"abstract":": Aluminium is one of the most recyclable materials, as it can be recycled over and over again, and is one of few materials that keeps its properties after recycling. It can be re-melted and used again and again in new products, making it an environmentally friendly metal and a sustainable material. This makes aluminium an excellent material to meet the needs and challenges of different products. Also, aluminium recycling offers advantages in terms of environmental and economic benefits. Therefore, more aluminium must be collected, sorted, and returned into the economy as new products. Aluminium recycling is the process by which various scrap aluminium can reuse in products after its initial production and involves simply re-melting these scraps. This work provides an overview of the basic aluminium recycling process, using postconsumer scrap in the melting process in few laboratory experiments. Typically, postconsumer aluminium scrap is a mixture of alloys and sometimes even a mixture of metals, the main sources for aluminium scrap being the packaging, technology, construction, and the transport industry. In our experiments, different aluminium scrap sources were considered: mixed packaging aluminium scrap and used beverage can scrap, aluminium from electric cables and aluminium from collected castings. Having in view that the chemical composition is the main challenge in aluminium recycling, mass balance of main aluminium alloying elements is performed. This research provides an overview of the aluminium recycling process, from the scrap upgrading to the melting process.","PeriodicalId":50884,"journal":{"name":"Acta Polytechnica Hungarica","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135263910","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.12700/aph.20.10.2023.10.5
Bisera Andrić Gušavac, Milan Martić, Milena Popović, Gordana Savić
{"title":"Agricultural Route Efficiencies, based on Data Envelopment Analysis (DEA)","authors":"Bisera Andrić Gušavac, Milan Martić, Milena Popović, Gordana Savić","doi":"10.12700/aph.20.10.2023.10.5","DOIUrl":"https://doi.org/10.12700/aph.20.10.2023.10.5","url":null,"abstract":"","PeriodicalId":50884,"journal":{"name":"Acta Polytechnica Hungarica","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135507661","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.12700/aph.20.10.2023.10.2
Zoltán Szabó, Kvetoslava Matlovičová, Elisabeta Ilona Molnár, Zoltán Bujdosó, Ágnes Erzsébet Hojcska
{"title":"Territorial Inequalities of Medicinal Waters, as Natural Healing Factors, in Hungary","authors":"Zoltán Szabó, Kvetoslava Matlovičová, Elisabeta Ilona Molnár, Zoltán Bujdosó, Ágnes Erzsébet Hojcska","doi":"10.12700/aph.20.10.2023.10.2","DOIUrl":"https://doi.org/10.12700/aph.20.10.2023.10.2","url":null,"abstract":"","PeriodicalId":50884,"journal":{"name":"Acta Polytechnica Hungarica","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135508044","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.12700/aph.20.10.2023.10.4
Sobia Naseem, Muhammad Mohsin, Xin Zhao
{"title":"The Influence of Land Utilization and Urbanization, on Environmental Decay in G-20 Countries: Novel Implications for Sustainable Urban Growth","authors":"Sobia Naseem, Muhammad Mohsin, Xin Zhao","doi":"10.12700/aph.20.10.2023.10.4","DOIUrl":"https://doi.org/10.12700/aph.20.10.2023.10.4","url":null,"abstract":"","PeriodicalId":50884,"journal":{"name":"Acta Polytechnica Hungarica","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135508339","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.12700/aph.20.8.2023.8.2
Imre Janos Barabas, Bela Merkely, Istvan Hartyanszky, Daniel Palkovics
{"title":"Computer-aided Design and Manufacturing of a Patented, Left Ventricle Assist Device Positioning Tool – 3D Navigated Surgical Treatment of End-Stage Heart Failure","authors":"Imre Janos Barabas, Bela Merkely, Istvan Hartyanszky, Daniel Palkovics","doi":"10.12700/aph.20.8.2023.8.2","DOIUrl":"https://doi.org/10.12700/aph.20.8.2023.8.2","url":null,"abstract":"","PeriodicalId":50884,"journal":{"name":"Acta Polytechnica Hungarica","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135750344","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.12700/aph.20.9.2023.9.3
Xénia Szanyi-Gyenes, Anikó Almási
{"title":"Top Executives on Competitiveness: Survey of Digitalization and Internationalization in Hungarian Companies","authors":"Xénia Szanyi-Gyenes, Anikó Almási","doi":"10.12700/aph.20.9.2023.9.3","DOIUrl":"https://doi.org/10.12700/aph.20.9.2023.9.3","url":null,"abstract":"","PeriodicalId":50884,"journal":{"name":"Acta Polytechnica Hungarica","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135750348","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.12700/aph.20.9.2023.9.7
László Berényi, László Soltész
: The increasingly agile environment requires quick responses, including technological solutions and project management decisions. Former investigations aimed to explore expert opinions about project success factors. This study enhances the investigations to student opinions for establishing a more comprehensive view of the critical issues. A harmonious collaboration based on agreed values and methods has been appreciated. The study used a survey among engineering and business students (n=155) about the success factors of product development projects. The goal was to explore their opinions and compare those with expert opinions. The results show that clear goals are considered very important by both groups. Project meetings, cooperation, and other soft factors are recognized as more important by the experts than by the students. The results confirm that the order of the opinions is significantly different. The cluster analysis marked three distinctive patterns of opinions. Improving the performance of the mixed project teams reflected in project success calls for action. Accepting the more professional approach the experienced project team members, the lack of students’ competencies can be designated. Changes must be supported by training activities and rethinking the curricula in the field.
{"title":"Product Development: Imagines versus Practice","authors":"László Berényi, László Soltész","doi":"10.12700/aph.20.9.2023.9.7","DOIUrl":"https://doi.org/10.12700/aph.20.9.2023.9.7","url":null,"abstract":": The increasingly agile environment requires quick responses, including technological solutions and project management decisions. Former investigations aimed to explore expert opinions about project success factors. This study enhances the investigations to student opinions for establishing a more comprehensive view of the critical issues. A harmonious collaboration based on agreed values and methods has been appreciated. The study used a survey among engineering and business students (n=155) about the success factors of product development projects. The goal was to explore their opinions and compare those with expert opinions. The results show that clear goals are considered very important by both groups. Project meetings, cooperation, and other soft factors are recognized as more important by the experts than by the students. The results confirm that the order of the opinions is significantly different. The cluster analysis marked three distinctive patterns of opinions. Improving the performance of the mixed project teams reflected in project success calls for action. Accepting the more professional approach the experienced project team members, the lack of students’ competencies can be designated. Changes must be supported by training activities and rethinking the curricula in the field.","PeriodicalId":50884,"journal":{"name":"Acta Polytechnica Hungarica","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135262546","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.12700/aph.20.9.2023.9.6
Abbas Talimian, Jan Vychytil, Luděk Hynčík, Tomasz Bońkowski
{"title":"Safety of a Child, in a Vehicle Side Crash, with Three Restraint Systems","authors":"Abbas Talimian, Jan Vychytil, Luděk Hynčík, Tomasz Bońkowski","doi":"10.12700/aph.20.9.2023.9.6","DOIUrl":"https://doi.org/10.12700/aph.20.9.2023.9.6","url":null,"abstract":"","PeriodicalId":50884,"journal":{"name":"Acta Polytechnica Hungarica","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135310676","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.12700/aph.20.11.2023.11.2
Karel Máslo, Jan Koudelka, Branislav Bátora, Václav Vyčítal
{"title":"Asymmetrical, Three-phase Power System Model: Design and Application","authors":"Karel Máslo, Jan Koudelka, Branislav Bátora, Václav Vyčítal","doi":"10.12700/aph.20.11.2023.11.2","DOIUrl":"https://doi.org/10.12700/aph.20.11.2023.11.2","url":null,"abstract":"","PeriodicalId":50884,"journal":{"name":"Acta Polytechnica Hungarica","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135560237","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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