Zobrazeno 1 - 10
of 11 142
pro vyhledávání: '"Transmission Loss"'
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-13 (2024)
Abstract To enhance the low-frequency sound absorption capabilities of expansion chamber mufflers, a novel Helmholtz-ring phononic crystal cell was developed. This innovative design integrates ring Helmholtz resonators as the phononic crystal scatter
Externí odkaz:
https://doaj.org/article/47c5d59ce8644db2b9ce1974f0ee7b08
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-23 (2024)
Abstract Eco-friendly natural fiber composites, such as basalt fiber composites, are gaining traction in material science but remain vulnerable to environmental degradation. This study investigates the mechanical and vibrational properties of quasi-i
Externí odkaz:
https://doaj.org/article/ce27cdac596b41db97666d18d2faff0b
Publikováno v:
Discover Applied Sciences, Vol 6, Iss 11, Pp 1-27 (2024)
Abstract This paper presented a study on the security constrained optimal power flow (SCOPF) of a practical transmission utility grid network (TUGN). The objectives of reduction in the transmission losses of TUGN (TLGN) and to minimize the bus voltag
Externí odkaz:
https://doaj.org/article/3fa58a5a945741ef95bd13c9caef4654
Publikováno v:
Science and Engineering of Composite Materials, Vol 31, Iss 1, Pp 159-64 (2024)
The acoustic performance of metal hollow sphere (MHS) A356 aluminum matrix composites has a significant impact on their application, making it worthy of in-depth investigation. To investigate the acoustic performance and mechanism of MHS A356 aluminu
Externí odkaz:
https://doaj.org/article/955aa712201c4b2789af4c0e41536789
Publikováno v:
BioResources, Vol 19, Iss 3, Pp 5916-5934 (2024)
The escalating demand for polyurethane rigid foams (PURF) has resulted in a substantial increase in waste polyurethane products. In view of the difficulty in recycling waste PURF, this study introduces a novel mechanical recycling process that is cos
Externí odkaz:
https://doaj.org/article/2d56c711afa54cbdb594555bc1917e2e
Autor:
Zhi-Yuan Wang, Hsiao-Dong Chiang
Publikováno v:
International Journal of Electrical Power & Energy Systems, Vol 161, Iss , Pp 110167- (2024)
The non-convexity of the Optimal Power Flow (OPF) feasible region complicates the solution process and affects the applicability of various optimization techniques, which is crucial for understanding the OPF problem. This paper systematically investi
Externí odkaz:
https://doaj.org/article/692caffed0be4952bdba706d5dadc17d
Autor:
Teng Feng, Yuemin Yue, Kelin Wang, Hongsong Chen, Lu Zhai, Xianzhao Liu, Yuanqi Chen, Yong Zhang
Publikováno v:
International Soil and Water Conservation Research, Vol 12, Iss 2, Pp 446-454 (2024)
Heterogeneous karst surfaces exerted scaling effects whereby specific runoff decrease with increasing area. The existing RUSLE-L equations are limited by the default implicit assumption that the surface-runoff intensity is constant at any slope lengt
Externí odkaz:
https://doaj.org/article/5598ddd4617b4527b8f72dbb6a096411
Autor:
Muhammad Zulkarnain, Irianto Harny, Mohamad Irfan Insdrawaty, Mohamad Izmul Farees Azman, Muhamad Izwan Aiman Azmi, Eny Kusrini
Publikováno v:
International Journal of Technology, Vol 15, Iss 3, Pp 618-627 (2024)
Transportation tracks of railways and highways are the highest noise pollution contribution to the inhabitant urban due to the sources near residential areas. Many researchers proved that the composite material could help reduce the noise by 30%.
Externí odkaz:
https://doaj.org/article/3d03040a21c04777862854fbd6a598eb
Publikováno v:
Proceedings of the Estonian Academy of Sciences, Vol 73, Iss 2, Pp 159-167 (2024)
Considering the green transformation, more and more attention must be paid to reducing noise pollution, which is one of the most important environmental problems today. Internal combustion engine (ICE) powered hand tools and small appliances, such as
Externí odkaz:
https://doaj.org/article/1b5488c076d548a49fab9b8c00eeb337
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