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Piotr Lis
Pág. 2 - 6
Dear Readers,I have the pleasure of presenting to you the first issue of our research journal entitled ?Research Papers in Economics and Finance? (REF), published by the Faculty of Economics at Poznan University of Economics and Business. Caring about th...
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Dmitry Lazarenko, Iaroslav Krutogorskyi
Pág. 27 - 32
The article presents the world economic trends of alternative energy. An analysis of international programs and innovative projects that are implemented and used in the energy sector is introduced. Conceptual proposals and innovative research in the fiel...
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Xiaogang Chen, Qi Ye, Jinzhou Du and Jing Zhang
Nutrients and organic pollutants transported by submarine groundwater discharge (SGD) play a significant role in controlling water quality, and can lead to the concerned deleterious effects on marine ecosystems. Subterranean estuaries are complicated hab...
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Bright Kwakye-Awuah, Baah Sefa-Ntiri, Elizabeth Von-Kiti, Isaac Nkrumah and Craig Williams
Ground water samples from residential homes in three Regions of Ghana: Central, Greater Accra and Ashanti, were analyzed for iron and manganese contamination. The samples were exposed to characterized zeolite Y by X-ray diffraction, scanning electron mic...
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Kiki Kananda, Dean Corio, Hafif Restu K., Hilmi Aziz, Topan Wira B., Diah A.
Pág. 100 - 106
Hydropower plants are increasingly being heard nowadays, but the growth is still very lacking, especially for residents living in rural and coastal areas. At present several efforts have been made by the government, including the existence of a system of...
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Carla Oliveira Henriques, Maria Elisabete Neves and João Jorge Couceiro
This paper examines the efficiency of alternative energy equity Exchange-Traded Funds (ETFs) and conventional energy equity ETFs from 2018 to 2020, utilizing a combination of an output-oriented Slack-Based Data Envelopment Analysis (DEA) model and cluste...
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Bangchu Zhang, Hao Fu, Weiyu Zhu, Kuijian Yang and Yuanming Xu
The thermal problem of high-altitude airships has an essential impact on position control and energy system performance. Adjusting the airship?s attitude angle causes differences in thermal performance during position alterations. This paper studies an a...
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Kedong Zhang, Wenhua Wang, Yihua Liu, Linlin Wang, Yazhen Du, Hongxia Li and Yi Huang
A new type of anti-rolling device denoted as a fluid momentum wheel (FMW) is proposed to address the limitations of traditional gyrostabilizers in reducing the roll responses of floating platforms in waves. The proposed device is based on the same gyrosc...
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Dongeun Kim and Yoon Hyeok Bae
Generally, new and renewable energy systems generate electricity by installing and operating multiple modules simultaneously. In the Republic of Korea, recent studies and developments have focused on asymmetric wave energy converters (hereafter referred ...
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Araceli Peña-Fernández, Manuel A. Colón-Reynoso and Pilar Mazuela
Greenhouses are instrumental in the advancement of regions globally. The geometric arrangement of these structures plays a pivotal role in governing sunlight distribution, facilitating ventilation, and managing condensation. The roof?s shape significantl...
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