Micrometer-sized “wet” aerosols on to a hydrophilic surface. 数μmのwetエアロゾルが親水性表面にどのように沈着するのか?

大気に浮遊する微粒子の沈着の場所について考えてみた。”Wet”微粒子は「親水性の高い」場所に多く沈着する。”Dry”微粒子”は「親水性の低い」場所に多く沈着する。Considered the location of the deposition of particles suspended in the air. The results: “More hydrophilic” area trapped more “wet” particles. The “less hydrophilic” area trapped more “dry” particles.


Point-1.「繊維の隙間より小さい粒子はマスクのフィルターを通過する」は間違い “Particles smaller than the fiber gap pass through the filter of the mask” is not accurate

Point-2. 大事なことはマスクのフィルター性能より,マスクの縁と顔表面との隙間からの漏れ(侵入)を少しでもなくすこと。It is important to eliminate the leakage (intrusion) from the gap between the mask edge and the face surface, rather than the filter performance of the mask.

Can aerosol particles deposit from 25℃ to 40℃ surfaces?【医療機器の開発】室温中のエアロゾルを40℃の表面に沈着させる流体制御

閉鎖空間における沈着を考慮したエアロゾルフローシステムを構築した。沈着効率が悪い従来法に代わって本手法を気液界面細胞曝露に応用できれば有用である。An aerosol flow system has been constructed to mimic the delivery of particles to the air-liquid interface. Potentially be applied for the deposition and analysis of submicron particles on various types of substrate without the need for vacuum imaging analysis..

【植物とエアロゾル】作物・小松菜に水溶性微粒子を長期的に散布した After long-term spraying of water-soluble fine particles on a crop (komatsuna)…

Short Introductions of other papers: /paper/ Komatsuna plants were grown and exposed to ammonium sulfate (((NH4)2SO4), AS) submicron particles for 16 days (22.5 µg m−3 per day) in phytotrons. The amount of particles deposited on the leaf  decreased over time, because AS particles deposited on the leaf deliquesced, allowing ions such as SO42− in the…

A book on “air pollution” matter. 著書PM2.5の科学(畠山史郎、野口恒, 2016)出版に貢献しました。

Wuled Lenggoro contributed on making the “first-connect” between two authors (Shiro Hatakeyama, a well-known professor of PM2.5 and Hisashi Noguchi, a Journalist). Published by Nikkan Kogyo Shinbun (2016).. 著者:畠山史郎(農工大教授)、野口恒(ジャーナリスト) 大気中に浮遊する粒子状物質(Particulate Matter)のうち、粒径が2.5 µm以下のものを指します。 Amazon website::: Nikkan Bookstore :::

【環境計測技術】表面電位顕微鏡で大気中から捕集した粒子の帯電状態を調べたCharging state of particles collected from the air by K-F Microscope.

呼吸により人体に入る微粒子の帯電状態が注目された。本研究では大気中に浮遊する微粒子の帯電状態を評価できる手法を考案。The importance of electrostatic charging state to particle deposition in the human airways has been suggested. We developed a measurement method of electrostatic charging state of individual ambient aerosol particles

最優秀論文賞 International Conference (Malaysia) BEST PAPER AWARD. A battery-driven passive sampler for PM1.0)乾電池を用いたエアロゾル捕集器

11 Nov. 2015. BEST PAPER AWARD, 2nd International Conference on Purity, Utility Reaction and Environmental Research (PURE 2015), Kuala Lumpur. “Development of a battery-driven passive sampling system for electrostatically trapping atmospheric particles” (M. P. Khairunnisa, F. Faizal, H. Fukushima, M. Gen, P. Widiatmoko, I. W. Lenggoro*) … (乾電池を用いた高電圧変換器を駆使し、携帯性に優れた、大気中微粒子捕集器の開発):各地のPM2.5またはPM1.0の解析に役にたつ Full paper : Journal of Purity, Utility…

Iinoya Award (30th. Symposium on Aerosol) to a graduate student. 大学院生が学会賞を受賞

Doctoral student: MASAO GEN got the 2013 IINOYA AWARDduring 30th SYMPOSIUM ON AEROSOL SCIENCE & TECHNOLOGY (held in Kyoto Univ.)(Supplementary prize = cash prize of 100,000 Yen) “Development of a portable sensor system based on aerosol particles to detect pesticide residues” エアロゾル粒子センサーを用いた携帯型残留農薬検出システムの開発 (東京農工大学・大学院博士後期課程)玄 大雄 The award selection was based from a “special session” (5 min….