SHIMADA Kojiro

写真a

Title

Assistant Professor

Researcher Number(JSPS Kakenhi)

70707190

Mail Address

E-mail address

Current Affiliation Organization 【 display / non-display

  • Duty   University of the Ryukyus   Faculty of Science   Chemistry, Biology and Marine Science   Assistant Professor  

  • Concurrently   University of the Ryukyus   Graduate School of Engineering and Science   Chemistry, Biology and Marine Science   Assistant Professor  

  • Concurrently   University of the Ryukyus   Faculty of Engineering   Assistant Professor  

University 【 display / non-display

  • 2010
    -
    2013

    Tokyo University of Agriculture and Technology     Graduated

Graduate School 【 display / non-display

  •  
    -
    2013.03

    Tokyo University of Agriculture and Technology  Graduate School, Division of Agricltural Sciences  Department of Symbiotic Science of Environment and Natural Resources  Doctor's Course  Completed

External Career 【 display / non-display

  • 2020
     
     

    University of the Ryukyus  

Affiliated academic organizations 【 display / non-display

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    the International Global Atmospheric Chemistry 

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    Asian Aerosol Conference 

  • 2019.04
    -
    Now
     

    Papers to a special issue of "10th International Conference on Acid Deposition (Acid Rain 2020)"    Guest editors

Research Interests 【 display / non-display

  • 国際共同研究、大気化学、環境化学、エアロゾル、越境大気汚染、光化学酸化反応

Research Areas 【 display / non-display

  • Environmental Science/Agriculture Science / Environmental dynamic analysis

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

  • 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)

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Presentations 【 display / non-display

  • 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 

  • Degradation of PAHs during long range transport based on simultaneous measurements at Tuoji Island, China, and at Fukue Island and Cape Hedo, Japan

    Shimada K, Nohchi1 M, Yang X, Sugiyama T, Miura K, Takami A, Sato K, Chen X, Meng F, Hatakeyama S

    AAC meeting  2019  -  2019 

  • 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 

  • Observation of Cloud Water Chemistry in the Free Troposphere and the Atmospheric Boundary Layer on Mt. Fuji (5)

    Dairiki M, Okochi H, Nakamura M, Tahara D, Takemura N, Nakano T, Shimada K, Katumi N, Minami Y, Takeuchi M, Toda K, Kato S, Wada R, Miura K, Nonemochi S, Hatakeyama S, Dokiya Y

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

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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

  • 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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SDGs 【 display / non-display

  • 越境大気汚染、VOC削減、オゾン削減、気候変動、環境配慮型への工場の効率化

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
     
     

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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