Global Journal of Engineering and Technology Advances最新文献

{"title":"Technological advances of ammonia as energy storage solution","authors":"None Ibim Abba Green, None Kelechi Uchenna Ugoji, None Umar Shamsu, None Igbere Billy Ndukam, None Titus Joseph","doi":"10.30574/gjeta.2023.16.3.0185","DOIUrl":"https://doi.org/10.30574/gjeta.2023.16.3.0185","url":null,"abstract":"The renewable energy is playing an important role in transitioning to the decarbonization of the entire energy value chain. But how will the global energy industry accelerate this transition? Renewables and electrification of energy could be a perfect solution. However, intermittency of renewable energy production is the single biggest challenge faced by renewable energy sources, which can be mitigated when it is coupled with an appropriate energy storage system. First, you need to generate electricity from renewable sources and then store it so that it can be extracted whenever there is a demand. There are several energy storage systems that can be coupled with renewables such as fossil fuel storage, mechanical storage, thermal storage, electrochemical storage, and chemical storage. Studies have shown that chemical storage technologies provide clear advantage in terms of storage time and range of power it can store over other similar technologies. It also justifies the recent research activities around various new chemical storage technologies. A combination of the above energy systems works very well for most of the abundant and affordable energy. However, one area where there can be a significant improvement is the carbon emissions associated with fossil fuel-based storage systems. As a result, the energy industry is recently interested in the transition to renewables coupled with non-carbon storage of power as a long term solution to environmental issues. So the possible solution is producing chemical storage options from surplus renewable energy which solves both the hurdles of emissions as well as carbon-free energy storage system. This article analyses whether ammonia can be viewed as an efficient and technological solution to the problem of large-scale and long-duration energy storage in the decarbonized energy systems of the future. Throughout the article, references have been drawn from a wide range of resources and author’s academic and industrial experience. It is intended to use the article as a vehicle to share knowledge with a wide range of audience on utilization of ammonia for energy storage.","PeriodicalId":402125,"journal":{"name":"Global Journal of Engineering and Technology Advances","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136277281","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":"Understanding vitiating elements and ensuring fairness in Nigerian contract law: A comprehensive study","authors":"None Orseer Ama, None Aki Tyungu, None Michael Toryila Tiza","doi":"10.30574/gjeta.2023.16.3.0168","DOIUrl":"https://doi.org/10.30574/gjeta.2023.16.3.0168","url":null,"abstract":"This abstract presents key findings and recommendations from a study on vitiating elements in Nigerian contract law. The study explored elements such as misrepresentation, mistake, duress, undue influence, lack of capacity, illegality, unconscionability, frustration of purpose, and non-compliance with formalities, analyzing their impact on contract formation and enforceability. Emphasizing the importance of understanding vitiating elements for fair and transparent contractual relationships, the study highlighted public policy as a guiding principle in determining enforceability. It stressed the significance of adhering to formal requirements and conducting due diligence to protect parties from unjust contracts. Recommendations included legal education, standardized contract terms, special protections for vulnerable parties, and adaptation to emerging technologies. These insights contribute to enhancing contract formation integrity and supporting equitable relationships within Nigeria's legal framework.","PeriodicalId":402125,"journal":{"name":"Global Journal of Engineering and Technology Advances","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136271499","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":"Improvement of aluminium alloy properties with aids of elements generated from cow horn additive","authors":"None Oguntuase Musa, None Adeyemi Gbenga Joshua, None Stephen Joseph Temitope","doi":"10.30574/gjeta.2023.16.3.0187","DOIUrl":"https://doi.org/10.30574/gjeta.2023.16.3.0187","url":null,"abstract":"The researchers in the area of material science have employed various agricultural wastes to improve the properties of aluminium alloys. They took advantage of various elements present in these wastes to enhance the properties of aluminium alloy. The choice of materials should always depend on their capability in term of elements present in them. Inability to choose a material wisely may result into total failure of the components. Materials possess various properties ranging from mechanical properties such as tensile strength and impact strength to electrical properties such as thermal conductivity. Also, some materials have been identified to be deficient in certain areas such as low thermal conductivity, high wear rate, poor ductility, poor machinability, and weak strength, due to some elements present in them. In the present study, aluminium scraps (secondary aluminium) was used as base material and reinforced with locally available inexpensive cow horn particulate (agricultural wastes) of 3, 6, 9 and 12% by weight of aluminium to develop an improved material taking the advantage of the elements present in the reinforcing material. The spectrographic analysis was conducted to determine the chemical compositions of all the specimens, which shows various elements present in control sample and CHp reinforced aluminium alloy. Aluminium is in the range 91.3 - 93.0%, followed by silicon with 4.36 - 5.01%, other elements present include iron, copper, magnesium, manganese, chromium, nickel, zinc, titanium, lead and others. The elements present in each sample were studied and application areas of each sample were suggested.","PeriodicalId":402125,"journal":{"name":"Global Journal of Engineering and Technology Advances","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136277089","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":"Comparative study of CO2-N2 and N2-N2 dual expansion in natural gas liquefaction process","authors":"None Elieze Jackson, None John Vitus Anele, None Peter Odiboroghene Muwarure","doi":"10.30574/gjeta.2023.16.3.0197","DOIUrl":"https://doi.org/10.30574/gjeta.2023.16.3.0197","url":null,"abstract":"The processes were modelled using the Aspen Hysys version 11. The paper compared two refrigeration systems with different refrigerants, CO2-N2 and N2-N2, and their expenders. The parameters compared are the liquefaction power, specific power, production capacity, and heat duty of the expander cycle. The liquefaction power of CO2-N2 (547.669kW) is lower than that of N2-N2 (815.85kW). The specific power consumption for CO2-N2 was 0.44096kW/kg, and for N2-N2 was 0.6569kW/kg. The production capacity N2-N2 gave a higher value of 6945.6MTPA than CO2-N2 4904.38MTPA.","PeriodicalId":402125,"journal":{"name":"Global Journal of Engineering and Technology Advances","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136342944","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":"Performance evaluation of a low-cost cold storage system using animal products","authors":"None Fawziyyah Uthman, None Jelili Aremu Oyedokun, None Kamaldeen Taiwo Sule, None Elizabeth Ayodele Onipede, None Imran Olaitan Oyedokun","doi":"10.30574/gjeta.2023.16.3.0191","DOIUrl":"https://doi.org/10.30574/gjeta.2023.16.3.0191","url":null,"abstract":"Animal products such as chicken, fish and beef are highly perishable and easily deteriorate thus, requires proper storage to maintain their quality and shelf life. It is known that shelf life of chilled fresh animal products can be extended by various packaging solution such as vacuum or modified atmosphere packaging. However, a freshness of chilled meat is strongly influence by temperature. The storage system incorporated temperature control. This provides insights into the performance and effectiveness of the low-cost storage system for animal products by evaluating temperature stability. The findings of this study will contribute to a sustainable and affordable storage system that will minimize animal product losses as well improve the quality. This research work deals with the performance evaluation of a low cost smart storage system, the smart storage system allows to be setting to a desired temperature within the range of 55 °C to – 17 °C with a capacity of 20 kg. The animal products (chicken, catfish and beef) was frozen with the temperature of 0 °C with two-hour interval record taken for 16 hours for each of the products in pieces and whole, while the DE frozen was carried out for 12 hours with an interval of two hours record taken. The result of the products in wholes was compared with the pieces during the frozen and DE frozen. It was revealed that chicken in whole and pieces weight reduced after 16 hours of frozen by 0.06% and 3.9% respectively, catfish in whole and pieces weight increase after 16 hours of frozen by 0.11% each and beef in whole and pieces weight reduced after 16 hours of frozen by 0.09% and 2.87% respectively while chicken in whole and pieces weight increase after 12 hours of DE frozen by 0.06% and 0.26% respectively, catfish in whole and pieces weight increase after 12 hours of DE frozen by 0.23% and 0.57% respectively and beef in whole and pieces weight reduced after 12 hours of DE frozen by 1.11% and 3.39% respectively. The storage was found to be suitable for the selected animal products and highly recommended for small and middle scale animal frozen sellers or producers.","PeriodicalId":402125,"journal":{"name":"Global Journal of Engineering and Technology Advances","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136342943","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":"Enhancing procurement efficiency through strategic budgeting: A case study of Benue State Ministries, Departments, and Agencies (MDAs)","authors":"None Orseer Ama, None Aki Tyungu, None Winifred Udende, None Michael Toryila Tiza","doi":"10.30574/gjeta.2023.16.3.0166","DOIUrl":"https://doi.org/10.30574/gjeta.2023.16.3.0166","url":null,"abstract":"This report explores the significance of procurement planning and budgeting for the Government of Benue State. It highlights the various types of budgets applicable to the procurement of goods, works, and services and emphasizes their role in efficient resource allocation, financial control, transparency, accountability, and risk mitigation. The report outlines the budgeting process for procurements, covering pre-budgeting, budget formulation, budget implementation, and post-budgeting phases. Drawing from successful case studies and best practices from other states and countries, it provides key takeaways and lessons for effective procurement budgeting in Benue State. The report calls for the adoption of integrated e-Procurement systems, strategic budgeting frameworks, and stakeholder engagement to optimize procurement outcomes. Recommendations include centralizing procurement functions, leveraging technology, and fostering a culture of transparency, data-driven decision-making, and continuous improvement. With these measures, Benue State's procurement processes can become more resilient, responsive, and better aligned with strategic goals, ultimately leading to enhanced service delivery for its citizens.","PeriodicalId":402125,"journal":{"name":"Global Journal of Engineering and Technology Advances","volume":"92 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136271497","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":"Innovations and applications of Laterized concrete in sustainable construction","authors":"None Emmanuel OGUNLEYE, None Chinwuba Arum","doi":"10.30574/gjeta.2023.16.3.0175","DOIUrl":"https://doi.org/10.30574/gjeta.2023.16.3.0175","url":null,"abstract":"This comprehensive discourse examines the innovative construction material known as laterized concrete, which combines sustainability with local resource utilization. The exploration encompasses its composition, mix design, strength, durability considerations, case studies, challenges, guidelines, global impact, and future prospects. Laterized concrete leverages the distinctive attributes of laterite soil to achieve enhanced performance, reduced cement consumption, lower carbon emissions, and improved durability. It highlights its role in transforming construction practices towards more sustainable and eco-friendly approaches. Through case studies, challenges, and guidelines, the material's potential is illuminated, serving as an invitation to further research, development, and widespread implementation in the pursuit of a greener built environment.","PeriodicalId":402125,"journal":{"name":"Global Journal of Engineering and Technology Advances","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136272384","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":"Liquid fuel production from high density polyethylene plastic waste","authors":"I. B. Alit, Rudy Sutanto","doi":"10.30574/gjeta.2023.16.2.0149","DOIUrl":"https://doi.org/10.30574/gjeta.2023.16.2.0149","url":null,"abstract":"This research aims to determine the effect of heat exchanger diameter variations on the volume and physical properties of fuel derived from plastic waste. The plastic waste is converted using the thermal cracking method, which involves heating the raw material without oxygen. This process produces charcoal and oil from the gas condensation in the heat exchanger. The type of plastic used is High-Density Polyethylene (HDPE) waste. The variations of heat exchanger diameter used are 1/2inch, 3/4 inch, and 1 inch. The physical properties investigated include density, viscosity, and heating value. From the test results, it was found that density of the oil fuel produced from plastic waste decreased with increasing heat exchanger diameter. However, the volume and heating value of the fuel produced increased. Generally, the physical properties of plastic pyrolysis oil produced from the thermal cracking process of plastic waste resemble those of gasoline","PeriodicalId":402125,"journal":{"name":"Global Journal of Engineering and Technology Advances","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126452969","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":"Improving quality in online tests and assessments using extended forms on google form background","authors":"Nguyen Tai, Tuyen, Nguyen Tai Tuyen, N. Quang, Nguyễn Thị, Thuc Hien","doi":"10.30574/gjeta.2023.16.2.0159","DOIUrl":"https://doi.org/10.30574/gjeta.2023.16.2.0159","url":null,"abstract":"Today, teaching and learning at all levels is combining traditional teaching methods with online teaching via the Internet (teaching and learning, remote assessment through the network environment). In addition to teaching culture and expertise for long-term classes, there are refresher courses and online distance learning (digital university). Contributing to improving the quality of teaching and online assessment in the current period, the author has researched and tested the assessment of learning outcomes based on extended forms combined with google form. The assessment process shows more secure results (compose questions, answers and manage assessment test results using lock mode and encrypt the test path). The program can be applied to different training systems.","PeriodicalId":402125,"journal":{"name":"Global Journal of Engineering and Technology Advances","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131661653","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":"Organisational culture and construction employee safety","authors":"Z. Mustapha, Benjamin Boahene Akomah, Chris Kurbom Tieru","doi":"10.30574/gjeta.2023.16.2.0145","DOIUrl":"https://doi.org/10.30574/gjeta.2023.16.2.0145","url":null,"abstract":"Organisational culture plays a critical role in the functioning and identity of an organisation. The study examined Schein’s model based on artifacts, espoused values, and basic assumptions to determine the level of influence on construction employees’ safety. Online questionnaire administration among medium-sized construction firms in the Central Region of Ghana was employed for the data collection. The designed questionnaire was used to gather the opinions of supervisors, foremen, and workers in the construction industry. Descriptive statistics and the Relative Importance Index (RII) were utilised to analyse the findings. The results reveal that work environment design and workplace cleanliness were the most influential artifacts impacting employee safety. Regarding espoused values, the organisation’s strategies and employee safety played a significant role in ensuring a safe workplace. Additionally, variables related to self-awareness and freedom of expression had substantial importance in the realm of basic underlying assumptions. Understanding the relationship between organisational culture and employee safety is crucial for creating safe work environments and fostering a safety culture. Construction firms can enhance employee safety and achieve corporate goals by addressing artifacts, espoused values, and assumptions. The results of this study are beneficial to construction project managers, contractors, and construction management researchers, as they offer insights into creating safer work environments and improving employee well-being through organisational culture.","PeriodicalId":402125,"journal":{"name":"Global Journal of Engineering and Technology Advances","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124440943","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}