マスク装着に関して(日本エアロゾル学会)On Mask-wearing

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.

Example of Technology: Synthesis & Structuring of Particles (2018-2019)開発の事例:微粒子の合成と構造化

浮遊する微粒子の構造化と集積化について、従来まで考証されていなかった物質の輸送に対する「駆動力のバランス」の視点からの技術手法を開発した。We have developed methods for synthesis & structuring suspended particles from the viewpoint of “balance of the driving force on the transport of matter”, which has not been considered before.

A workshop: Australia (Monash Univ.) and Japan (TUAT)

TUAT welcomes a group from Monash Univeristy (led by Professor Aibing Yu, Vice Chancellor’s Professorial Fellow, Pro Vice-Chancellor and President – Suzhou) Speakers: “Modelling of reacting flows and industry applications: some examples” Yansong Shen (University of New South Wales) “Modelling and Simulation of Packing and Flow of Ellipsoidal Particles”, Zongyan Zhou (Monash University) “DEM-based models for flow,…

GIYSE. a new program for high-school student (JST-TUAT)科学者・技術者を目指す高校生を対象に

Our lab is joining a new program for high-school student (sponsored by the Japanese government/JST) 東京農工大学では、将来グローバルに活躍する科学者、技術者を目指す高校生を対象に、大学の研究、教育内容を先取りして経験できるプログラムを用意しました。それが「GIYSEプログラム」です。Global Innovation program for Young Scientists and Engineers /~giyse/ K. Sano (2nd grade student, Tokyo Metropolitan Tachikawa High School 東京都立立川高等学校) is joining GIYSE program (2018-2019). His topic is about collection of air poluttant (PM2.5). He is also being supported by…

TUAT: Japan’s second “most-productive” university in terms of “Number of papers per academic-staff”. 教員あたりの学術論文数が国内2位(農工大)

Tokyo University of Agriculture and Technology (TUAT) is a university with many “high-research-producers”. The university has about 400 academic-staffs. Japan’s second “most-productive” university in terms of “Number of papers per academic-staff” UK-based QS announced the QS Asian University ranking 2018 (Oct. 2017), and TUAT ranked as the top 1% of universities in Asia. In particular,…

Between surface charges of colloidal particles and their charged aerosols.液中粒子の表面電荷とそれらのエアロゾル化時の荷電との関係

Interaction between surface charge (zeta potential) of colloidal nanoparticles and the charge induced droplets suspended in the gas phase by electrospray is investigated for the first time. 液相中のナノ粒子の表面電荷(ゼータ電位)と気相中操作(静電噴霧)により懸濁液滴の荷電(電荷)の間の相互作用について初めての研究。

Invited talk at Japan Geoscience Union.日本地球惑星科学連合会

By a recommendation of Prof. Hirotaka Saito (Soil Physics, Institute of Agriculture, TUAT) Wuled Lenggoro was invited for a talk in JpGU (Japan Geoscience Union 日本地球惑星科学連合会) Meeting 2018 “Transport and immobilization of colloids into sub-100 nm porous structures by electrophoretic methods in aqueous media“ This study was performed by TUAT students: K. Kusdianto (Dr. Eng., now with…

From a single candle: we made both hydrophilic & hydrophobic particle layers. 同一ロウソクから親水性と疎水性の両方の粒子層を作りました

Using “soot” from a candle burning, we developed assembly routes to form hydrophilic or hydrophobic layers of carbonaceous nanoparticles. ロウソク燃焼の「煤」を用いて、親水性または疎水性を有するナノ粒子膜の作製する方法を開発。5000年前に中国で開発された、従来の「墨」技術と同じかどうか?

A graduate student at Asian Aerosol Conference (Korea, July 2017)

A doctoral student (Ferry Faizal) presented his study at 10th Asian Aerosol Conference (AAC2017), which was held in Jeju, Korea, 2 to 6 July 2017. Assembly of particles from candle burning Attracting 541 delegates, speakers, and sponsors from 19 countries around the world. Photo: Conference official website

An Electric Field Mill in Koganei Campus. 大気電場多点観測

学芸大学(鴨川研究室)の主催で、レンゴロ研究室は大気電場多点観測ネットワークに協力することになりました。研究の目的としては、多摩地区では落雷や降雹、ゲリラ豪雨を伴った積乱雲が数多く発生することが報告されています。これらの現象は雷雲が作り出す電場の変動と密接な関係があると考えられ、レーダー観測と合わせることで雷雲の電気的な構造を明らかにしていきます。大気電場測定装置を小金井を中心とした半径5km以内の領域に集中展開します。他の設置場所候補として、JAXA筑波宇宙センター、調布航空宇宙センター、調布飛行場があります。Organized by Gakugei University (Kamogawa laboratory),

Article: Doctoral thesis (by M. Gen) 博士論文の紹介記事

Aerosol Kenkyu (J. Aerosol Res., Jpn.) Vol. 31, No.2, 2016. Dr. Masao Gen (Bachelor-, master- and doctoral course) writes about his thesis. After working with WPI-AIMR, Tohoku University as Assistant Professor, he joined City University of Hong Kong, as a Research Fellow of School of Energy and Environment (Dean: Prof. Chak K. Chan) His doctoral…

Does the leaf structure prevent the deposition of aerosols? 葉の構造はエアロゾルの付着を防止する?

Epicuticular “wax” crystals affect distribution of incoming particles on needles (leaf surfaces). Densely distributed “wax” might prevent the deposition of sub-micron particles on the surfaces of needles to retain the function of stomata. スギ(代表的な針葉樹種)の葉表面に人工的に散布されたsub-micronの炭素系粒子の局在を調べた。気孔の機能を保持するために密に分布されたワックスは、気中からの微粒子の付着を防止する役割があるかもしれません。

PAPER: Removal of particles from potable water. 水道水(飲料水)から微粒子を採集

Other “intro” of papers from our lab >> /tag/paper/ Removal of iron-oxide particles after post-filtration in local potable water using an electrophoretic method Collaborated with: Univ. Putra Malaysia; Univ. Teknologi MARA, Malaysia Journal of Water Process Engineering: Vol. 9, Feb. 2016, Pages 208–214. doi: Full text/PDF: Researchgate, or here Keywords: Electrophoretic deposition; Fibre electrodes; Limiting flux;…

PAPER: Charge of Particle by Kelvin Probe Force Microscopy. ケルビンフォース顕微鏡で粒子の帯電を計測

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

BEST PAPER AWARD at International Conference (PURE 2015, Malaysia)最優秀論文賞

OPE 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,…