Zobrazeno 1 - 10
of 94
pro vyhledávání: '"Hiroshi Okochi"'
Autor:
Ngoc Tran, Yusuke Fujii, Md Firoz Khan, To Thi Hien, Tran Hoang Minh, Hiroshi Okochi, Norimichi Takenaka
Publikováno v:
Asian Journal of Atmospheric Environment, Vol 18, Iss 1, Pp 1-16 (2024)
Abstract The emission sources of fine particulate matter (PM2.5) have not yet been fully identified in Ho Chi Minh City (HCMC), Vietnam, presenting difficulties to authorities in controlling air pollution efficiently. To address this issue, this stud
Externí odkaz:
https://doaj.org/article/f14d381918c34dd5a77bec1facb437fa
Publikováno v:
Atmospheric Environment: X, Vol 21, Iss , Pp 100237- (2024)
Spatial distributions of interleukin-8 (IL-8)-based relative inflammation potentials (IP) of PM2.5 from vehicle exhaust and non-exhaust emission sources in Japan are derived using the meteorology–chemistry model (NHM-Chem) and laboratory experiment
Externí odkaz:
https://doaj.org/article/1d991a94770c40fab743a9acf459a9ee
Autor:
Masaki Takeuchi, Shinya Nakagawa, Hiroki Watanabe, Hideji Tanaka, Takaharu Isobe, Hiroko Ogata, Hiroshi Okochi
Publikováno v:
Atmospheric Environment: X, Vol 18, Iss , Pp 100213- (2023)
Mountain observatories at high altitudes, far from local anthropogenic emission sources, are considered ideal for monitoring temporal variations of tropospheric air pollutants. During August 17–21 in 2013, we measured sulfur dioxide and nitric acid
Externí odkaz:
https://doaj.org/article/887f78fa577948e58ff360da56d5c6cb
Autor:
Kojiro Shimada, Masayuki Nohchi, Koji Maeshima, Tomonori Uchino, Yusuke Kobayashi, Kazuki Ono, Hiroko Ogata, Naoya Katsumi, Koji Inazu, Hiroshi Okochi
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-9 (2022)
Abstract The concentrations of polycyclic aromatic hydrocarbons (PAHs) in aerosol were measured in Shinjuku, which is central Tokyo, Japan, for 10 years from 2007 to 2016. The effects of changes in emission sources and their degradation by reaction w
Externí odkaz:
https://doaj.org/article/ab0cdb24fca342bc8cf163c72a4f4bef
Publikováno v:
Environmental Research Communications, Vol 5, Iss 12, p 121001 (2023)
Anthropogenic activities and meteorological conditions influence the composition of urban bioaerosols. The COVID-19 epidemic drastically reduced anthropogenic activities in the metropolitan areas of Japan in 2020. This study examined inter-day fluctu
Externí odkaz:
https://doaj.org/article/6badb8830d384881a312a1efa2db7913
Publikováno v:
Asian Journal of Atmospheric Environment, Vol 12, Iss 2, Pp 153-164 (2018)
We measured 1H and 13C nuclear magnetic resonance (NMR) spectra of Humic-like substances (HULIS) in urban atmospheric aerosols isolated by diethylaminoethyl (DEAE) and hydrophilic-lipophilic balance (HLB) resin to characterize their chemical structur
Externí odkaz:
https://doaj.org/article/777269d9e46548e28774989d61f643f5
Autor:
Takeshi Kinase, Kazuyuki Kita, Yasuhito Igarashi, Kouji Adachi, Kazuhiko Ninomiya, Atsushi Shinohara, Hiroshi Okochi, Hiroko Ogata, Masahide Ishizuka, Sakae Toyoda, Keita Yamada, Naohiro Yoshida, Yuji Zaizen, Masao Mikami, Hiroyuki Demizu, Yuichi Onda
Publikováno v:
Progress in Earth and Planetary Science, Vol 5, Iss 1, Pp 1-17 (2018)
Abstract A large quantity of radionuclides was released by the Fukushima Daiichi Nuclear Power Plant accident in March 2011, and those deposited on ground and vegetation could return to the atmosphere through resuspension processes. Although the resu
Externí odkaz:
https://doaj.org/article/1b99fee97efb49ce81ecc2733c0c0b54
Autor:
Toshiki Sugo, Hiroshi Okochi, Ryunosuke Uchiyama, Eri Yamanokoshi, Hiroko Ogata, Naoya Katsumi, Takanori Nakano
Publikováno v:
City and Environment Interactions, Vol 3, Iss , Pp - (2019)
In order to study the impact of organic aerosols in the formation of UHR (hereafter UHR = urban-induced heavy rain), we analyzed humic-like substances (hereafter HULIS) that serve as major atmospheric surfactants as well as the major inorganic ions i
Externí odkaz:
https://doaj.org/article/74844c707db14b9db5daea29c3233762
Publikováno v:
Asian Journal of Atmospheric Environment, Vol 4, Iss 1, Pp 1-8 (2010)
The effectiveness of the government regulation on tail-pipe emission for diesel vehicles issued in 2003 in Tokyo was evaluated in this study. Variations in annual average concentrations of polycyclic aromatic hydrocarbons (PAHs) and nitro-PAHs associ
Externí odkaz:
https://doaj.org/article/de1582d131ba401f8733e517973a841b
Autor:
Hiroshi Okochi, Peter Brimblecombe
Publikováno v:
The Scientific World Journal, Vol 2, Pp 767-786 (2002)
It is possible that metal–organic complexation enhances the uptake of gaseous organic compounds and the solubility of metals in aerosols and atmospheric water. We investigated potential atmospheric organic ligands and the enhanced uptake of hydroxy
Externí odkaz:
https://doaj.org/article/1e3b8598a8534535885d114505c9570b