Zobrazeno 1 - 10
of 79
pro vyhledávání: '"Yusaku KYOZUKA"'
Autor:
Taekyoung Seong, Sae Yamamoto, Hisayuki Nakatani, Mitsuharu Yagi, Yusaku Kyozuka, Glenn Satuito, Hee-Jin Kim
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-12 (2024)
Abstract Microplastic pollution, especially secondary microplastics (MPs), poses a significant threat to marine ecosystems. Despite its prevalence, the impact of natural-aged MPs on marine organisms, hindered by collection challenges, remains poorly
Externí odkaz:
https://doaj.org/article/66d1135aee214bf59876fe5ace4c6094
Autor:
Hisayuki Nakatani, Shun Narizumi, Seiya Okubo, Suguru Motokucho, Anh Thi Ngoc Dao, Hee-Jin Kim, Mitsuharu Yagi, Yusaku Kyozuka, Shigenobu Miura, Kanth V. Josyula
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-11 (2024)
Abstract It is essential to develop a mechanism for lowering the molecular weight of polyolefins to achieve biodegradation in seawater. In this study, a polypropylene/polylactic acid blend sample was first subjected to photodegradation pretreatment,
Externí odkaz:
https://doaj.org/article/2bf8eb1f1207495fb57ce5bba8e78eec
Autor:
Taekyoung Seong, Sae Yamamoto, Hisayuki Nakatani, Mitsuharu Yagi, Yusaku Kyozuka, Glenn Satuito, Hee‑Jin Kim
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-1 (2024)
Externí odkaz:
https://doaj.org/article/9054638de0ae4d0382259511f3e74508
Autor:
Hisayuki Nakatani, Yuina Ohshima, Taishi Uchiyama, Suguru Motokucho, Anh Thi Ngoc Dao, Hee-Jin Kim, Mitsuharu Yagi, Yusaku Kyozuka
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-8 (2023)
Abstract Various tiny plastic particles were retrieved from the sea and studied using scanning electron microscopy/energy-dispersive X-ray spectroscopy (SEM/EDX) analysis to prepare realistic reference microplastics (MP). Most of the MP exhibited a d
Externí odkaz:
https://doaj.org/article/e20df7c650834055ada996e639ee5b93
Autor:
Hisayuki Nakatani, Kaito Yamashiro, Taishi Uchiyama, Suguru Motokucho, Anh Thi Ngoc Dao, Hee-Jin Kim, Mitsuharu Yagi, Yusaku Kyozuka
Publikováno v:
Molecules, Vol 29, Iss 5, p 1173 (2024)
Microplastics (MP) encompass not only plastic products but also paint particles. Marine microdebris, including MP, was retrieved from five sampling stations spanning Nagasaki-Goto island and was classified into six types, primarily consisting of MP (
Externí odkaz:
https://doaj.org/article/78d6373bd396412788e8046f3504f2f9
Autor:
Hisayuki Nakatani, Taishi Uchiyama, Suguru Motokucho, Anh Thi Ngoc Dao, Hee-Jin Kim, Mitsuharu Yagi, Yusaku Kyozuka
Publikováno v:
Polymers, Vol 16, Iss 2, p 293 (2024)
The alteration of an ultraviolet light absorber (UVA: UV-326) in polymers (PP, HDPE, LDPE, PLA, and PS) over time during degradation was studied using an enhanced degradation method (EDM) involving sulfate ion radicals in seawater. The EDM was employ
Externí odkaz:
https://doaj.org/article/64ce14423c754b6bab44cf506ff0e428
Autor:
Yusaku KYOZUKA
Publikováno v:
Journal of Fluid Science and Technology, Vol 3, Iss 3, Pp 439-449 (2008)
The Darrieus turbine is popular for tidal current power generation in Japan. It is simple in structure with straight wings rotating around a vertical axis, so that it has no directionality against the motion of tidal flow which changes its direction
Externí odkaz:
https://doaj.org/article/fd354ffe3d7d49d188edb1a88995bec7
Autor:
Sakaguchi, Patxi Garcia-Novo, Daniel Coles, Yusaku Kyozuka, Reiko Yamada, Haruka Moriguchi, Daisaku
Publikováno v:
Sustainability; Volume 15; Issue 12; Pages: 9147
Due to the expected increase in electric power demand in the coming decades and the economic and environmental issues caused by power generation from the combustion of hydrocarbon fuels, the integration of renewable energy into the grids of remote is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=multidiscipl::c9652be4dd404003f08a7793106d4814
Autor:
Hisayuki NAKATANI, Kaito YAMASHIRO, Taishi UCHIYAMA, Suguru MOTOKUCHO, Anh Thi Ngoc DAO, Hee-Jin KIM, Mitsuharu YAGI, Yusaku KYOZUKA
Marine microplastics (MP) and microdebris were retrieved from the five sampling stations between Nagasaki port and Goto Island and were classified into six types. Three of these types, MP (A), Si-based (B), and Cu-based (C) paint particles, were pred
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f0dace29693f6d34c34255e9e823ae49
https://doi.org/10.21203/rs.3.rs-2793994/v2
https://doi.org/10.21203/rs.3.rs-2793994/v2
Autor:
Hisayuki Nakatani, Yuina Ohshima, Taishi Uchiyama, Motokucho Suguru, Mitsuharu Yagi, Yusaku Kyozuka
To establish a marine microplastic (MP) model, the sizes and O/C molar ratios of MP particles retrieved from the sea were measured using scanning electron microscopy/energy-dispersive X-ray spectroscopy (SEM/EDX) analysis. Most of the MP particles ex
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::77b03f58fc4318354061e480b48e8647
https://doi.org/10.21203/rs.3.rs-1976856/v1
https://doi.org/10.21203/rs.3.rs-1976856/v1