Cogent Engineering最新文献_第7页

A technical review on epoxy-nanoclay nanocomposites: Mechanical, hygrothermal and wear properties 环氧树脂-纳米粘土纳米复合材料的力学性能、湿热性能和磨损性能研究进展

Cogent Engineering Pub Date : 2023-09-24 DOI: 10.1080/23311916.2023.2257949

Achutha U. Kini, Manjunath Shettar, M. C. Gowrishankar, Sathyashankara Sharma

引用次数: 1

A new blockchain investment and energy certificate platform 一个新的区块链投资和能源证书平台

Cogent Engineering Pub Date : 2023-09-19 DOI: 10.1080/23311916.2023.2260226

Chung Seok Han, Majid Lotfi Ghahroud, Min Jae Park, Jalil Ghassemi Nejad

{"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}

引用次数: 0

Model-based smart irrigation control strategy and its effect on water use efficiency in tomato production 基于模型的番茄智能灌溉控制策略及其对水分利用效率的影响

Cogent Engineering Pub Date : 2023-09-18 DOI: 10.1080/23311916.2023.2259217

Erion Bwambale, Felix K. Abagale, Geophrey K. Anornu

{"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}

引用次数: 1

Design, manufacture, and performance evaluation of a single-axle tractor-operated potato digger elevator 单轴牵引车马铃薯挖掘提升机的设计、制造及性能评价

Cogent Engineering Pub Date : 2023-09-14 DOI: 10.1080/23311916.2023.2251744

Dessye Belay Tikuneh, Abebe Fanta Beri

{"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}

引用次数: 0

Cost effectiveness and feasibility considerations on the design of mini-UAVs for balloon takedown. Part 2: Aircraft design approach selection 气球降落小型无人机设计的成本效益和可行性考虑。第2部分:飞机设计进近选择

Cogent Engineering Pub Date : 2023-09-12 DOI: 10.1080/23311916.2023.2257958

Luca Piancastelli, Christian Leon-Cardenas, Eugenio Pezzuti, Merve Sali

引用次数: 0

Experimental assessment of train-induced soil vibration characteristics using Arduino-based accelerometers 基于arduino加速度计的列车诱发土壤振动特性实验评估

Cogent Engineering Pub Date : 2023-09-11 DOI: 10.1080/23311916.2023.2245201

Paul Christopher Kimali Kioko, Sylvester Abuodha, John Mwero, Zacharia Kuria

引用次数: 0

Product characteristics versus customer perceptions on a health-related product 产品特征与客户对健康相关产品的看法

IF 1.9

Cogent Engineering Pub Date : 2023-09-06 DOI: 10.1080/23311916.2023.2216851