Zobrazeno 1 - 10
of 275
pro vyhledávání: '"Shuichi HASEGAWA"'
Autor:
Weidong Jing, Katsutomo Saito, Takuma Okamoto, Hibiki Saito, Kazuki Sugimoto, Chiharu Nishita-Hara, Keiichiro Hara, Masahiko Hayashi, Shuichi Hasegawa, Tomoaki Okuda
Publikováno v:
Asian Journal of Atmospheric Environment, Vol 16, Iss 2, Pp 1-19 (2023)
Abstract The valence state and concentration of metallic pollutants are important factors contributing to the health effects of respirable particulate matter (PM); however, they have not been well studied. In this study, coarse and fine powder sample
Externí odkaz:
https://doaj.org/article/dd19018789c24860aa6798acaa8d3bfd
Autor:
Shuichi Hasegawa
Publikováno v:
Asian Journal of Atmospheric Environment, Vol 16, Iss 2, Pp 1-13 (2023)
Abstract Organic aerosols (OA) in the atmosphere have complex emission sources and formation processes that must be determined to understand the OA composition and behavior. The thermal optical method is generally used to analyze organic carbon (OC)
Externí odkaz:
https://doaj.org/article/c444cc78ce954c71a9936e1b9fd96b1d
Autor:
Hideki Hasunuma, Liliana Martinez Rivera, Hirosato Kobayashi, Kenji Aizu, Kazunori Oshima, Jun Shibutani, Yasuyuki Itano, Satoru Chatani, Shuichi Hasegawa, Makiko Yamagami, Junya Hoshi
Publikováno v:
Asian Journal of Atmospheric Environment, Vol 16, Iss 3, Pp 1-11 (2022)
Abstract In Japan, the achievement rate of environmental standards for air pollution has been improving in recent years, but for photochemical oxidants, including ozone, improvement are required. In this study, we investigated trends in ozone counter
Externí odkaz:
https://doaj.org/article/fb85ffa9ef914dcfac1482427d41a006
Publikováno v:
Geoenvironmental Disasters, Vol 7, Iss 1, Pp 1-13 (2020)
Abstract Local authorities i.e. government officials working at the district level and below and elected representatives of municipalities are the steering body of local-level disaster response mechanism in Nepal. The effectiveness of response operat
Externí odkaz:
https://doaj.org/article/018c3d522ffe40d6ad49f97d3aac2827
Autor:
Yuji Fujitani, Katsuyuki Takahashi, Katsumi Saitoh, Akihiro Fushimi, Shuichi Hasegawa, Yoshinori Kondo, Kiyoshi Tanabe, Akinori Takami, Shinji Kobayashi
Publikováno v:
Environmental Advances, Vol 5, Iss , Pp 100101- (2021)
Atmospheric particulate matter (PM) in industrial areas is typically enriched with potentially toxic trace metals. However, measurements of ultrafine particles (PM0.1) in industrial areas, and the source apportionment of PM0.1 based on these results,
Externí odkaz:
https://doaj.org/article/6544e0b645574132800905eb5251c9a2
Publikováno v:
Asian Journal of Atmospheric Environment, Vol 13, Iss 3, Pp 161-170 (2019)
Hourly concentrations of fine particulate OC and EC are monitored for more than one year by optical monitors at three sites in and out of Tokyo, Japan. Distances between the sites are 20 to 50 km. SOC concentrations are estimated from the OC and EC c
Externí odkaz:
https://doaj.org/article/24f80974834840479ed1eec8cc4668ad
Publikováno v:
Journal of Risk Analysis and Crisis Response (JRACR), Vol 10, Iss 3 (2020)
Externí odkaz:
https://doaj.org/article/4f475cc751114a45881bc3c8eced5af3
Autor:
Yuji Fujitani, Katsuyuki Takahashi, Akihiro Fushimi, Shuichi Hasegawa, Yoshinori Kondo, Kiyoshi Tanabe, Shinji Kobayashi
Publikováno v:
Atmospheric Environment: X, Vol 5, Iss , Pp - (2020)
Particulate matter (PM) in automobile tailpipe exhaust is regulated by PM mass but not particle number (PN) in most parts of the world, including Japan, so the effect of PM mass regulations on the atmospheric PN concentration (PNC) is of interest fro
Externí odkaz:
https://doaj.org/article/0d65bce040744824804dbc342fdecc73
Publikováno v:
Journal of Risk Analysis and Crisis Response (JRACR), Vol 9, Iss 2 (2019)
Although the Nepalese Army’s regular infantry troops are the tools of disaster response their competency at times becomes questionable. Their disaster response’s soft skill knowledge, technical skill knowledge and preparedness activities along wi
Externí odkaz:
https://doaj.org/article/b0ccb3cfc14943a5b8f416146405d6a5
Autor:
Daisuke Ishikawa, Shuichi Hasegawa
Publikováno v:
Journal of Spectroscopy, Vol 2019 (2019)
A hollow cathode discharge cell has been developed for a variety of sample phases. To make the experimental apparatus compact, we have adopted DC discharge, and the discharge cell was inexpensively constructed for replacement with commercially availa
Externí odkaz:
https://doaj.org/article/b4adb7d5004f4c4d86a1c98382dbb136