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Current Affiliation Organization 【 display / non-display 】

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Thesis 【 display / non-display 】

Thesis 【 display / non-display 】

• 東アジアから輸送される炭素質エアロゾルの動態把握

  2013.03

Published Papers 【 display / non-display 】

Published Papers 【 display / non-display 】

• Possibility of condensation of nitric acid for cloud condensation nucleus in the summer at Mt. Fuji

  Kojiro Shimada, Yoshun Geka, Shungo Kato, Chak K. Chan, Yong Pyo Kim, Chang-Feng Ou-Yang, Neng-Huei Lina, Shiro Hatakeyama

  Atmospheric Pollution Research     2023.09 [ Peer Review Accepted ]

  Type of publication: Research paper (scientific journal)

• Possibility of condensation of nitric acid for cloud condensation nucleus in the summer at Mt. Fuji

  Kojiro Shimada, Yoshun Geka, Shungo Kato, Chak K. Chan, Yong Pyo Kim, Chang-Feng Ou-Yang, Neng-Huei Lina, Shiro Hatakeyama

  ■■■     2023.09 [ Peer Review Accepted ]

  Type of publication: Research paper (scientific journal)

• Evaluation of oxidative ability after photoirradiation using urban aerosols

  Yurie Gotoh, Kojiro Shimada, Shuhei Murakami, Takumi Yamawaki, Ayaka Mitsukawa, Hiroshi Okochi

      2023.07 [ Peer Review Accepted ]

  Type of publication: Research paper (scientific journal)

• Evaluation of oxidative ability after photoirradiation using urban aerosols

  Yurie Gotoh, Kojiro Shimada, Shuhei Murakami, Takumi Yamawaki, Ayaka Mitsukawa, Hiroshi Okochi

      2023.07 [ Peer Review Accepted ]

  Type of publication: Research paper (scientific journal)

• Offline analysis of the chemical composition and hygroscopicity of sub-micrometer aerosol at an Asian outflow receptor site and comparison with online measurements

  Yange Deng;Hiroaki Fujinari;Hikari Yai;Kojiro Shimada;Yuzo Miyazaki;Eri Tachibana;Dhananjay Deshmukh;Kimitaka Kawamura;Tomoki Nakayama;Shiori Tatsuta;Mingfu Cai;Hanbing Xu;Fei Li;Haobo Tan;Sho Ohata;Yutaka Kondo;Akinori Takami;Shiro Hatakeyama;Michihiro Mochida

  Atmospheric Chemistry and Physics     2022.05 [ Peer Review Accepted ]

  Type of publication: Research paper (scientific journal)

  • Access this article

    DOI Repository

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Presentations 【 display / non-display 】

Presentations 【 display / non-display 】

• Characteristics of haze transported to Malaysia in La Niña events

  Shimada, K, Arakaki, T, Saeki, K, Kajikawa, T, Sato, K, Takada, S, Pauzi, M, Zakaria, P., M, Hatakeyam, S

  Acid rain 2020  2023.05  -  2023.05 

• Depression of ammonia uptake to sulfuric acid aerosols in Siem Reap, Cambodia

  Shimada K, Okochi H, Ishikawa S, Kajikawa T, Hasegawa A, Murakami S, Nakano T, Uchida E, Nakagawa T, Matsui T, Ishizaki M, Arai T, Udagawa S, Phul P, Poty L, Peou H

  Asian Aerosol Conference  2022  -  2022 

• Air pollution and its impact on heavy rainfall in Siem Reap, Cambodia

  Ishikawa S, Okochi H, Kajikawa T, Shimada K, Hasegawa A, Nakano T, Uchida E, Nakagawa T, Matsui T, Ishizuka M, Arai T, Udagawa S, Phorsda P, Lay P, Hang P

  The 2021 International Chemical Congress of Pacific Basin Societies (Pacifichem 2020)  2021  -  2021 

• Air pollution and its impact of rain- and dew-water chemistry in Siem Reap-Angkor region of Cambodia

  Kajikawa T, Okochi H, Shimada K, Nakano T, Uchida E, Ishizuka M, Nakagawa T, Matsui T, Lay P, Hang P

  IFDA2019 – 8th International Conference on Fog, Fog Collection and Dew  2019  -  2019 

• The Impact of Particulate Matters on the Formation and Chemistry of Tropical Heavy Rain Accompanied by Squall

  Kajikawa T, Okochi H, Nakano T, Shimada K, Uchida E, Nakagawa T, Matsui T, Ishizuka M, Arai T, Lay P, Hang P

  The 28th Symposium on Environmental Chemistry  2019  -  2019 

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Academic Awards 【 display / non-display 】

Academic Awards 【 display / non-display 】

• Oral presentation award

  2019.06     The Impact of Particulate Matters on the Formation and Chemistry of Tropical Heavy Rain Accompanied by Squall

• Oral presentation award

  2018.09    

• Oral presentation award

  2018.09    

• Oral presentation award

  2018.05    

• Oral presentation award

  2017.09    

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Grant-in-Aid for Scientific Research 【 display / non-display 】

Grant-in-Aid for Scientific Research 【 display / non-display 】

• Elucidation of the formation process of organic aerosols transported during long distances from Tuoji Island, China to Cape Hedo, Okinawa

  Grant-in-Aid for Scientific Research(C)

  Project Year: 2022.04  -  2025.03 

  Direct: 3,200,000 (YEN)  Overheads: 4,160,000 (YEN)  Total: 960,000 (YEN)

• Study on atmospheric environmental problems in megacities that consider the surface of paved roads as a new reaction field

  Challenging research (sprout)

  Project Year: 2018.06  -  2021.03 

  Investigator(s): Shimada Kojiro 

  Direct: 3,800,000 (YEN)  Overheads: 4,940,000 (YEN)  Total: 1,140,000 (YEN)

  　View Summary

  In megacities around the world, atmospheric environmental problems are being addressed in both developed and developing countries.Among them, even Tokyo, which is one of the most regulated megacities, has not been able to solve the atmospheric environmental problem of photochemical oxidants (ozone).In this study, we changed the "reaction field" of VOCs generated by photolysis of organic aerosol from the atmosphere to paved roads, instead of the overlooked "source" of VOCs required for ozone generation. As a result, it was discovered that the organic aerosol deposited on the paved road was photodecomposed to release VOCs. VOC emissions were high, and it was found that the current simulation model underestimated VOC emissions by more than three times.

• Analysis of the effect of nanoparticles to the respiratory system

  Grant-in-Aid for Scientific Research(C)

  Project Year: 2018.04  -  2021.03 

  Investigator(s): NISHIMURA Yoshihiro 

  Direct: 3,300,000 (YEN)  Overheads: 4,290,000 (YEN)  Total: 990,000 (YEN)

  　View Summary

  Dust emitted from factories and particulate matter (Particulate Matter; PM) contained in diesel exhaust, especially fine particles with a particle size of 2.5 μm or less (PM2.5), cause asthma when exposed to living organisms. It is known to be at risk of exacerbation of bronchitis. In recent years, the effects of nanoparticles (PM0.1) with a particle size of 0.1 μm or less on living organisms have been attracting attention, but their role in asthma exacerbation and intractability is unknown. From this study, it was suggested that PM0.1 in central Tokyo may not be involved in worsening asthma or steroid resistance, but the component analysis of PM0.1 used this time, the route of administration of PM0.1, and the dose need further study.

• A new development of stone deterioration and multidiscipinaly research on conservation in Angkor monument group

  Grant-in-Aid for Scientific Research(A)

  Project Year: 2017.04  -  2022.03 

  Direct: 31,700,000 (YEN)  Overheads: 41,210,000 (YEN)  Total: 9,510,000 (YEN)

• Aerosol

  Grant-in-Aid for Scientific Research(A)

  Project Year: 2017.04  -  2020.03 

  Investigator(s): Igarashi Yasuhito 

  Direct: 33,000,000 (YEN)  Overheads: 42,900,000 (YEN)  Total: 9,900,000 (YEN)

  　View Summary

  It is usual understanding that rainfall removes aerosols from the air. However, the question of whether rain plays a role in releasing aerosols to the air has been posed recently. In the present study, we found outbreak of radioCs-bearing aerosols in a contaminated Japanese forest due to rain. We carried out general radioactive aerosol observations in a typical mountainous village area within the exclusion zone in Fukushima. We also sampled according to the weather (rain or fine) inside a forest to better understand the process. Thus, we know that rain enhances/induces bursts of radioCs-bearing aerosols in forests. With further investigations, we confirmed that the fungal spore sources in the rainy weather seem to be different from those in the fine weather. Larger fungal particles (possibly conidia-ascospore) are emitted during rain than during fine weather, suggesting that the rain-splash mechanism for mold-like fungi could be the major mechanism.

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Social Activity 【 display / non-display 】

• エアロゾルの化学分析

  環境省環境研研究センター 

  2017.04

  -

  2018.03

• 東アジアの越境大気汚染

  沖縄県立読谷高校 

  2013.12

  　

  　

Media Coverage 【 display / non-display 】

Media Coverage 【 display / non-display 】

• 東アジア大陸から輸送される大気微粒子の吸湿性 ～化学組成との関係を明らかに・ラボ分析に基づく実験手法の有用性も提示～  Internet

  名古屋大学  名古屋大学研究成果発信サイト  https://www.nagoya-u.ac.jp/researchinfo/result/2022/05/post-249.html  2022.5

  Author： Other 

Academic Activities 【 display / non-display 】

Academic Activities 【 display / non-display 】

• 2022.9

  　

  　

  種別： Academic society, research group, etc. 

• 2021.9

  　

  　

  種別： Academic society, research group, etc. 

• 大気環境学会 

  2019.9

  　

  　

  種別： Academic society, research group, etc. 

• 2017.11

  　

  　

  種別： Academic society, research group, etc. 

• 2014.4

  -

  2016.3

  種別： Competition, symposium, etc. 

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