Sustainable Engineering and Innovation最新文献

{"title":"Preliminary reactor design for gold nanoparticle production by the Turkevich method on an industrial scale","authors":"Thyta Medina Salsabila Erlangga, A. Nandiyanto, R. Ragadhita","doi":"10.37868/sei.v5i1.id191","DOIUrl":"https://doi.org/10.37868/sei.v5i1.id191","url":null,"abstract":"This study aims to design and analyze the design of a batch-type reactor to optimize the production of gold nanoparticles on an industrial scale. The method used in the design of this reactor is the computational analysis of the reactor calculations, including stirring and mass balance as initial calculations using the Microsoft Excel application manually. The calculation results show that the designed reactor specifications have a reactor volume of 21.7335 ft3, cylinder height of 13.4612 in, a height of solution in the cylinder of 8.9046 in, vessel diameter of 73.2984 in, design pressure of 9.9978 psig, impeller length of 9.1840 in, shaft length of 10.5418 in, with stirring power 62.5228 Hp. Reactor design analysis is an important stage in the design of production processes on an industrial scale, where the specification results from the designed reactor can be used not only to adjust the reactor to the product but also to be used as a reference for production costs. The results of computational analysis and calculations performed on the reactor design in this study can be used as a reference and can be applied in the design of reactor performance analysis as a learning media, including operating mechanisms in the production process.","PeriodicalId":428933,"journal":{"name":"Sustainable Engineering and Innovation","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133435195","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}

{"title":"Sustainable construction strategies for building construction projects in the Kingdom of Bahrain: a model","authors":"J. Nebrida, Felisa E. Gomba","doi":"10.37868/sei.v5i1.id193","DOIUrl":"https://doi.org/10.37868/sei.v5i1.id193","url":null,"abstract":"Sustainability is meeting the demands of the present without compromising the ability of future generations to meet their own needs. This study focused on the sustainable construction strategies used in the kingdom of Bahrain in terms of sustainable construction technologies and management strategy linked to the environment, and the significant relationship between the management strategy and construction technologies used for sustainable building construction. This study employed the descriptive-correlational method of research using a questionnaire in gathering data about the sustainable construction strategies used in Bahrain. The data gathered were analyzed using the weighted mean and Pearson’s correlation coefficient to determine the degree of correlation between construction technologies and management strategy. SPSS software was used in the calculation.\u0000Results showed that management strategy linked to the environment is often practiced in around 75% of all projects delivered while general sustainable construction methods, energy and material-based techniques, and waste-based techniques are sometimes utilized in around 50% of all the building projects delivered. In addition, the utilization of these sustainable construction technologies is the result of management strategy linked to the environment which the respondents rated it as often practiced for all projects that were delivered and implies that management strategy in protecting the environment in Bahrain is often practiced in construction for 75% across the projects.\u0000From the results of the study, a model of sustainable building construction in the kingdom of Bahrain was derived in order to achieve sustainable building construction which includes the management strategies needed by the different stakeholders like construction firms and government agencies to carry out the implementation of sustainable construction and sustainable construction techniques which may include waste management, insulating materials, building envelope with thermal properties, building management system, and efficient fixtures.","PeriodicalId":428933,"journal":{"name":"Sustainable Engineering and Innovation","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126493273","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}

{"title":"An inset-fed rectangular microstrip patch antenna with multiple slits for sub 6GHz – 5G applications","authors":"Alminko Kašibović, S. Imeci, Ahmet Fehim Uslu","doi":"10.37868/sei.v5i1.id181","DOIUrl":"https://doi.org/10.37868/sei.v5i1.id181","url":null,"abstract":"This paper presents an inset feed Rectangular Microstrip Patch Antenna with Multiple slits for sub 6 GHz - 5G Applications. This antenna is proposed with the development, design, running simulations and finally a conclusion of the analysis. The antenna in this paper is implemented using a technique called “inset-feed” and multiple slits. The dielectric used as a substrate is FR-4. The proposed antenna is useful for a sub 6 GHz 5G band, which comes under the 5G band of frequency. The proposed and designed antenna gives the input match of -10.74 dB, and 5.99 dB gain at the design frequency of 5.045 GHz. These outputs are usable for the 5G applications. The antenna is simulated and developed in a radio technology design software Sonnet.","PeriodicalId":428933,"journal":{"name":"Sustainable Engineering and Innovation","volume":"124 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116380620","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}

{"title":"Laser cladding and applications","authors":"F. Findik","doi":"10.37868/sei.v5i1.id186","DOIUrl":"https://doi.org/10.37868/sei.v5i1.id186","url":null,"abstract":"Laser coating is a material placement technique wherein a powder material is melted using a laser to coat a portion of a substrate. In this study, laser cladding and its applications are reviewed. First, background of the technique and its important parameters are highlighted. Then, control of laser cladding procedure is criticized. As an example of the process, laser cladding of titanium alloys is investigated. Finally, applications of laser cladding on gas turbine engines, dies and drilling spindles, tools, turbine blades are highlighted.","PeriodicalId":428933,"journal":{"name":"Sustainable Engineering and Innovation","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133136610","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}

{"title":"The stages of development of architecture and observance of architectural heritage in the Republic of Armenia","authors":"M. Harutyunyan","doi":"10.37868/sei.v4i2.id182","DOIUrl":"https://doi.org/10.37868/sei.v4i2.id182","url":null,"abstract":"There are a lot of scientific and research reports dedicated to Armenian architecture from the ancient times to nowadays. There are many interesting and thoroughly researched reports of architectural and historical value done by not only Armenian but also foreign historians, architects, and engineers. Exploring Armenian architecture’s chronology and research reports, we noticed that after independence of the Republic of Armenia (since 1991) there are few scientific reports which include the stages of development of architecture of newly independent Armenia, the current state of the architectural heritage and their observance. So we decided to study that period trying to show the problems and essential events as well as to introduce that period by the stages of development also including some examples of architectural heritage.","PeriodicalId":428933,"journal":{"name":"Sustainable Engineering and Innovation","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116338067","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}

{"title":"Shell and tube heat exchanger design for production graphene oxide nanoparticles from agricultural waste","authors":"Diah Indriati, A. Nandiyanto, M. Fiandini, R. Ragadhita, Teguh Kurniawan","doi":"10.37868/sei.v4i2.id184","DOIUrl":"https://doi.org/10.37868/sei.v4i2.id184","url":null,"abstract":"Heat exchangers are used to transferring energy (heat), using fluids or gases, both hot and cold, from one area to another due to temperature differences. Almost all agricultural wastes serve as carbon products which are essential to produce graphene oxide, it is very possible to get graphene oxide by synthesizing it from agricultural waste which is expected to reduce the amount of waste on the earth. After carrying out the synthesis, it is necessary to test the characterization of the resulting product. The characterization stage requires a sintering process (20oC to 98oC) until the product is completely solidified. This research aims to design a heat exchanger that is highly effective in assisting the sintering process. For the design to be well-directed, several things must be done, such as calculating the main components (shell and tube) and designing a heat exchanger. Based on the TEMA standard and the use of simple calculations that refer to the attached calculation formula using Ms. Excel, hot and cold fluids used in this heat exchanger design are ethylene glycol and water. The length of the shell and tube as a whole is 5 m, the inner and outer shell diameters are 254 mm and 279.4 mm; the inner and outer tube diameters are respectively 22.09 mm and 25.40 mm. The calculation results show an excellent design effectiveness value of 86.14%. Continuous innovation in the design and materials of the heat exchanger can increase the effectiveness value to close to 100% so that it can help the graphene oxide synthesis process to make it cheaper and more efficient.","PeriodicalId":428933,"journal":{"name":"Sustainable Engineering and Innovation","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133760927","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}

{"title":"Comparison of mechanical and microstructure properties of tungsten alloys for special purposes","authors":"A. Imamović, Šaban Žuna, Ensar Mulaosmanović, Zijad Alibašić, B. Kosec","doi":"10.37868/sei.v4i2.id180","DOIUrl":"https://doi.org/10.37868/sei.v4i2.id180","url":null,"abstract":"Tungsten belongs to group of refractory metal that possess extraordinary resistance to heat and wear and it is the heaviest engineering material. Because of its properties tungsten is used for special purposes.\u0000This paper presents the results of mechanical and microstructure research on the example of the characteristic heavy tungsten alloys 91W-6Ni-1.8Fe-1Co and 93W-5Ni-1.6Fe-0.3Co with different Ni/Co ratios.\u0000The proper Ni/Co ratio is important to obtain a favorable microstructure and mechanical properties of these materials. The distribution of the W, Ni, Co and Fe elements in tungsten phase and binder phase, which can influence on mechanical properties of tungsten alloys.\u0000The SEM analysis and mechanical results show that the alloy, which has Ni/Co within the given limits,  posses a finer microstructure and better mechanical properties that is very important for the maintenance of the quality of tungsten alloys for special purposes.","PeriodicalId":428933,"journal":{"name":"Sustainable Engineering and Innovation","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130939610","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}

{"title":"Design and analysis of wideband sub-6 GHz microstrip antenna","authors":"Amel Bajrić, S. Imeci","doi":"10.37868/sei.v4i2.id170","DOIUrl":"https://doi.org/10.37868/sei.v4i2.id170","url":null,"abstract":"In this work, design, analysis, and simulation of microstrip patch antenna for Sub-6 GHz application has been investigated. The research method is based on the Sonnet Suites software. The aim of the study was to design and analyze microstrip patch antenna for Sub-6 GHz antenna for 5G applications and usage. The antenna is designed with the help of using partial ground architecture. Design architecture consideration and analysis of different parameters and simulations were investigated. The antenna operates at 4.32 GHz and the results are compact design area of 21.5 x 36.9 mm2, reflection coefficient is of -18 dB, and the gain in the range from 4.30 to 4.32 dB.","PeriodicalId":428933,"journal":{"name":"Sustainable Engineering and Innovation","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134506786","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}

{"title":"An An investigation on the friction losses between cylinder liner and piston rings","authors":"Mohamad Abouchi, S. Basturk","doi":"10.37868/sei.v4i2.id161","DOIUrl":"https://doi.org/10.37868/sei.v4i2.id161","url":null,"abstract":"Historically, the engine crankcase has been made of gray cast iron due to that material's' high machinability, damping ability, thermal conductivity, and sensible cost. Despite these advantages and the long-term use of gray cast iron, the vehicle manufacturers predominately use cast aluminum as material of choice for the engine block due to aluminum’s density being almost a third of that of gray cast iron, and the aluminum engines have the same durability as gray cast iron while weighing considerably less. However, due to the low wear resistance of aluminum, efforts are needed to improve internal working surfaces such as the use of cast iron cylinder liners or the application of a protective coat is applied to the aluminum surface to increase its resistance. The purpose of this study is to examine which ring materials have the lowest friction with the Twin Wire Arc (TWA) aluminum cylinder liner. An Ansys simulation model accomplishes the experimental work. The steel ring material obviously had the lowest friction with twin wire arc spray aluminum cylinder liner as opposite to the cast iron material which was the worst.","PeriodicalId":428933,"journal":{"name":"Sustainable Engineering and Innovation","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115602279","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}

{"title":"A survey on mobile payment applications and adopted theoretical models","authors":"Mohammed A. Hadi, I. Al-Baltah, Ammar T. Zahary","doi":"10.37868/sei.v4i2.id163","DOIUrl":"https://doi.org/10.37868/sei.v4i2.id163","url":null,"abstract":"Looking at the evolution of mobile phones, communications technology, and the Internet, one can see a clear shift in their usage in the past decade as mobile payment has become an important research area in the field of information technology. However, many financial institutions have adopted mobile payments. Except that only a limited number of clients are used. Several information systems theories/models have been proposed to examine the factors that could influence user adoption. However, the literature on the field is still in its infancy.  This paper, reviews and systematically analyzes the existing mobile payment acceptance and adoption literature that include UTAUT/TAM as a theoretical model to reveal mobile payment adoption research's current situation. The current study also provides a basis for future researchers in the mobile payment adoption study, as it provides a summary of related literature in the field, the models used, and the factors that have an impact on customer intent. Accordingly, the UTAUT, TAM models, with their extensions, are one of the models most used in examining and understanding the necessary factors that could influence mobile payment applications' adoption. The research revealed that 37 factors most commonly than a literature review on factors of adoption mobile payment applications since 2015. It was found that the factors of perceived trust and perceived risks are among the most critical factors in which the models are expanded, as they have an impact on the customer's acceptance of any new technology innovation. Therefore, emphasis must be placed on the factors of perceived trust and perceived risks to increase the applicability of UTAUT, TAM models to the mobile payment context.","PeriodicalId":428933,"journal":{"name":"Sustainable Engineering and Innovation","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132812155","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}