Pub Date : 2023-09-24DOI: 10.1080/23311916.2023.2257949
Achutha U. Kini, Manjunath Shettar, M. C. Gowrishankar, Sathyashankara Sharma
This review offers a summary of the epoxy-nanoclay nanocomposites research that has been performed. Epoxy-nanoclay nanocomposites have an across-the-board variety of aerospace, defense, construction, and automobile applications. Nanoclay is one of the ideal nano-reinforcement for epoxy because of its ease of workability, environmental accessibility, well-versed chemistry, and lower cost. The significant addition of a smaller quantity of nanoclay, mostly ≤5 wt.%, may efficiently improve polymer composites’ properties. This review aims to provide a state-of-the-art overview of epoxy-nanoclay nanocomposites, including their preparation methods, mechanical, hygrothermal, and wear properties. The discussion highlights the nanoclay influence on the properties listed above and the morphology of epoxy-nanoclay nanocomposites.
{"title":"A technical review on epoxy-nanoclay nanocomposites: Mechanical, hygrothermal and wear properties","authors":"Achutha U. Kini, Manjunath Shettar, M. C. Gowrishankar, Sathyashankara Sharma","doi":"10.1080/23311916.2023.2257949","DOIUrl":"https://doi.org/10.1080/23311916.2023.2257949","url":null,"abstract":"This review offers a summary of the epoxy-nanoclay nanocomposites research that has been performed. Epoxy-nanoclay nanocomposites have an across-the-board variety of aerospace, defense, construction, and automobile applications. Nanoclay is one of the ideal nano-reinforcement for epoxy because of its ease of workability, environmental accessibility, well-versed chemistry, and lower cost. The significant addition of a smaller quantity of nanoclay, mostly ≤5 wt.%, may efficiently improve polymer composites’ properties. This review aims to provide a state-of-the-art overview of epoxy-nanoclay nanocomposites, including their preparation methods, mechanical, hygrothermal, and wear properties. The discussion highlights the nanoclay influence on the properties listed above and the morphology of epoxy-nanoclay nanocomposites.","PeriodicalId":10464,"journal":{"name":"Cogent Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135926455","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}
Pub Date : 2023-09-19DOI: 10.1080/23311916.2023.2260226
Chung Seok Han, Majid Lotfi Ghahroud, Min Jae Park, Jalil Ghassemi Nejad
This article proposes a new decentralized asset investment and energy certificate platform: BIC (Blockchain Investment Certificate) which has a Korean patent for its new solution. The platform combines features of decentralized exchanges (DEX), crowdfunding, token economies, and insurance to provide a secure and efficient marketplace for buying and selling energy assets, including renewable energy certificates such as carbon credits. Decarbonization of energy systems has been a recent trend after 2020 where large-scale renewable energy sources (RES) are integrated into the power industry. The new business model and platform in this article offer unique solutions for investors, small and medium-sized enterprises (SMEs), and the overall economy. With its decentralized structure and innovative features, the platform has the potential to accelerate the transition to a low-carbon economy and promote sustainable investment practices. In addition, this platform provides a simple way to offset carbon footprints and support clean energy initiatives, contributing to the fight against climate change. Also, this platform not only supports the renewable energy market, encouraging the generation of renewable electricity on a larger scale but enables businesses to use renewable electricity without investing in costly facilities like solar panels, making renewable energy more accessible. Furthermore, this novel energy certificate platform facilitates the choice of exactly where to buy renewable energy, whether locally or from different regions in different countries, offering flexibility and increasing renewable energy adoption
{"title":"A new blockchain investment and energy certificate platform","authors":"Chung Seok Han, Majid Lotfi Ghahroud, Min Jae Park, Jalil Ghassemi Nejad","doi":"10.1080/23311916.2023.2260226","DOIUrl":"https://doi.org/10.1080/23311916.2023.2260226","url":null,"abstract":"This article proposes a new decentralized asset investment and energy certificate platform: BIC (Blockchain Investment Certificate) which has a Korean patent for its new solution. The platform combines features of decentralized exchanges (DEX), crowdfunding, token economies, and insurance to provide a secure and efficient marketplace for buying and selling energy assets, including renewable energy certificates such as carbon credits. Decarbonization of energy systems has been a recent trend after 2020 where large-scale renewable energy sources (RES) are integrated into the power industry. The new business model and platform in this article offer unique solutions for investors, small and medium-sized enterprises (SMEs), and the overall economy. With its decentralized structure and innovative features, the platform has the potential to accelerate the transition to a low-carbon economy and promote sustainable investment practices. In addition, this platform provides a simple way to offset carbon footprints and support clean energy initiatives, contributing to the fight against climate change. Also, this platform not only supports the renewable energy market, encouraging the generation of renewable electricity on a larger scale but enables businesses to use renewable electricity without investing in costly facilities like solar panels, making renewable energy more accessible. Furthermore, this novel energy certificate platform facilitates the choice of exactly where to buy renewable energy, whether locally or from different regions in different countries, offering flexibility and increasing renewable energy adoption","PeriodicalId":10464,"journal":{"name":"Cogent Engineering","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135060492","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}
Pub Date : 2023-09-18DOI: 10.1080/23311916.2023.2259217
Erion Bwambale, Felix K. Abagale, Geophrey K. Anornu
Drip irrigation’s potential to conserve irrigation water by around 25% compared to conventional methods is widely acknowledged. Nevertheless, the influence of varied irrigation control strategies on drip irrigation’s impact remains uncertain, particularly regarding crop growth parameters and water use efficiency. In this study, we examine the effects of three distinct irrigation control approaches manual, model-based, and open-loop on drip-irrigated tomato plants within an open field agricultural context. Employing a completely randomized design, we cultivated 160 tomato plants and administered irrigation water according to each strategy’s water requirements. Comprehensive data on key crop growth indicators, including plant height, stem diameter, leaf chlorophyll content, clusters per plant, flower and fruit counts, yield, and water use efficiency were documented. The results emphasize the pivotal role of the model-based irrigation control strategy. Specifically, this approach yielded a substantial tomato yield increase, recording 20 t/ha, in contrast to the 16 t/ha and 14 t/ha achieved by the open-loop and manual strategies, respectively. Noteworthy, the model-based approach exhibited remarkable water savings of 10.4 kg/m3, surpassing the values of 7.1 kg/m3 and 5.6 kg/m3 obtained through the open-loop and manual strategies. These differences proved statistically significant, evidenced by a p-value of 0.05. The model-based irrigation strategy led to a 29% reduction in water consumption compared to manual control. This study establishes the model-based irrigation strategy’s superiority, showcasing elevated tomato yield and improved water use efficiency. These findings furnish valuable insights into sustainable agricultural practices, particularly in the realm of drip irrigation systems.
{"title":"Model-based smart irrigation control strategy and its effect on water use efficiency in tomato production","authors":"Erion Bwambale, Felix K. Abagale, Geophrey K. Anornu","doi":"10.1080/23311916.2023.2259217","DOIUrl":"https://doi.org/10.1080/23311916.2023.2259217","url":null,"abstract":"Drip irrigation’s potential to conserve irrigation water by around 25% compared to conventional methods is widely acknowledged. Nevertheless, the influence of varied irrigation control strategies on drip irrigation’s impact remains uncertain, particularly regarding crop growth parameters and water use efficiency. In this study, we examine the effects of three distinct irrigation control approaches manual, model-based, and open-loop on drip-irrigated tomato plants within an open field agricultural context. Employing a completely randomized design, we cultivated 160 tomato plants and administered irrigation water according to each strategy’s water requirements. Comprehensive data on key crop growth indicators, including plant height, stem diameter, leaf chlorophyll content, clusters per plant, flower and fruit counts, yield, and water use efficiency were documented. The results emphasize the pivotal role of the model-based irrigation control strategy. Specifically, this approach yielded a substantial tomato yield increase, recording 20 t/ha, in contrast to the 16 t/ha and 14 t/ha achieved by the open-loop and manual strategies, respectively. Noteworthy, the model-based approach exhibited remarkable water savings of 10.4 kg/m3, surpassing the values of 7.1 kg/m3 and 5.6 kg/m3 obtained through the open-loop and manual strategies. These differences proved statistically significant, evidenced by a p-value of 0.05. The model-based irrigation strategy led to a 29% reduction in water consumption compared to manual control. This study establishes the model-based irrigation strategy’s superiority, showcasing elevated tomato yield and improved water use efficiency. These findings furnish valuable insights into sustainable agricultural practices, particularly in the realm of drip irrigation systems.","PeriodicalId":10464,"journal":{"name":"Cogent Engineering","volume":"118 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135148877","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}
Pub Date : 2023-09-14DOI: 10.1080/23311916.2023.2251744
Dessye Belay Tikuneh, Abebe Fanta Beri
This study presents the design, manufacture, and test of a two-wheel tractor-mounted potato digger elevator for harvesting potatoes. The experimental design for the prototype evaluations is a split plot where the conveyor slope (10°, 15°, and 20°) is the main plot and the rake angle (15°, 20°, and 25°) is a sub-plot with three replications. It was discovered that increasing the blade angle reduced tuber damage loss while increasing the conveyor slope. The greatest exposure effectiveness of 96.47% is recorded at a conveyor slope of 15° and a rake angle of 20°. At this optimum condition, damage percentage, conveyance efficiency, cleaning efficiency, drawbar pull, fuel consumption, wheel slip, soil swelling factor, soil mean weight diameter, pulverization ratio, and field capacity are 3.39%, 89.64%, 91.87%, 2959.1 N, 14.87 l/ha, 17.67%, 20.25%, 17.44 mm, 78.09%, and 0.127 hectares per hour, respectively. In comparison to manual hand hoe harvesting, the prototype can save 86.6% on labor and 63.36% on harvesting costs. The equipment is acceptable with its high promise for deployment to small to medium-sized farmers, and the authors advise re-evaluating at greater rake angles and conveying slope using multiple potato varieties and a double axel tractor.
{"title":"Design, manufacture, and performance evaluation of a single-axle tractor-operated potato digger elevator","authors":"Dessye Belay Tikuneh, Abebe Fanta Beri","doi":"10.1080/23311916.2023.2251744","DOIUrl":"https://doi.org/10.1080/23311916.2023.2251744","url":null,"abstract":"This study presents the design, manufacture, and test of a two-wheel tractor-mounted potato digger elevator for harvesting potatoes. The experimental design for the prototype evaluations is a split plot where the conveyor slope (10°, 15°, and 20°) is the main plot and the rake angle (15°, 20°, and 25°) is a sub-plot with three replications. It was discovered that increasing the blade angle reduced tuber damage loss while increasing the conveyor slope. The greatest exposure effectiveness of 96.47% is recorded at a conveyor slope of 15° and a rake angle of 20°. At this optimum condition, damage percentage, conveyance efficiency, cleaning efficiency, drawbar pull, fuel consumption, wheel slip, soil swelling factor, soil mean weight diameter, pulverization ratio, and field capacity are 3.39%, 89.64%, 91.87%, 2959.1 N, 14.87 l/ha, 17.67%, 20.25%, 17.44 mm, 78.09%, and 0.127 hectares per hour, respectively. In comparison to manual hand hoe harvesting, the prototype can save 86.6% on labor and 63.36% on harvesting costs. The equipment is acceptable with its high promise for deployment to small to medium-sized farmers, and the authors advise re-evaluating at greater rake angles and conveying slope using multiple potato varieties and a double axel tractor.","PeriodicalId":10464,"journal":{"name":"Cogent Engineering","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134910816","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}
Pub Date : 2023-09-12DOI: 10.1080/23311916.2023.2257958
Luca Piancastelli, Christian Leon-Cardenas, Eugenio Pezzuti, Merve Sali
Formulae display:?Mathematical formulae have been encoded as MathML and are displayed in this HTML version using MathJax in order to improve their display. Uncheck the box to turn MathJax off. This feature requires Javascript. Click on a formula to zoom.
{"title":"Cost effectiveness and feasibility considerations on the design of mini-UAVs for balloon takedown. Part 2: Aircraft design approach selection","authors":"Luca Piancastelli, Christian Leon-Cardenas, Eugenio Pezzuti, Merve Sali","doi":"10.1080/23311916.2023.2257958","DOIUrl":"https://doi.org/10.1080/23311916.2023.2257958","url":null,"abstract":"Formulae display:?Mathematical formulae have been encoded as MathML and are displayed in this HTML version using MathJax in order to improve their display. Uncheck the box to turn MathJax off. This feature requires Javascript. Click on a formula to zoom.","PeriodicalId":10464,"journal":{"name":"Cogent Engineering","volume":"91 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135827776","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}
Pub Date : 2023-09-06DOI: 10.1080/23311916.2023.2229109
U. Ezeamaku, I. A. Nnanwube, I. O. Eze, O. D. Onukwuli
{"title":"Effects of acetylation treatment on pineapple leaf fiber (Ananas comosus) reinforced with tapioca bio-based resin (cassava starch)","authors":"U. Ezeamaku, I. A. Nnanwube, I. O. Eze, O. D. Onukwuli","doi":"10.1080/23311916.2023.2229109","DOIUrl":"https://doi.org/10.1080/23311916.2023.2229109","url":null,"abstract":"","PeriodicalId":10464,"journal":{"name":"Cogent Engineering","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49608263","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}
Pub Date : 2023-09-04DOI: 10.1080/23311916.2023.2253643
Chalachew Dagnew Yehuala, O. Fatoba, Yusuf Ali
{"title":"Mechanical properties analyses of bolted joint of Kusha and Nacha fiber composite laminates","authors":"Chalachew Dagnew Yehuala, O. Fatoba, Yusuf Ali","doi":"10.1080/23311916.2023.2253643","DOIUrl":"https://doi.org/10.1080/23311916.2023.2253643","url":null,"abstract":"","PeriodicalId":10464,"journal":{"name":"Cogent Engineering","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47394370","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}
Pub Date : 2023-09-03DOI: 10.1080/23311916.2023.2243718
Wisnu Isvara, Mohammad Ichsan, Farras Ammar Muhammad, Jodi Noor Handibyanto, S. Abdinagoro
{"title":"Strategy development of contractor with Contractor Full Pre-Finance (CPF) scheme using risk-based approach to increase cost performance of toll road development projects","authors":"Wisnu Isvara, Mohammad Ichsan, Farras Ammar Muhammad, Jodi Noor Handibyanto, S. Abdinagoro","doi":"10.1080/23311916.2023.2243718","DOIUrl":"https://doi.org/10.1080/23311916.2023.2243718","url":null,"abstract":"","PeriodicalId":10464,"journal":{"name":"Cogent Engineering","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46415323","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}
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