PAPER: Spraying water-soluble particles to komatsuna leaves. 小松菜に水溶性微粒子を散布したら・・

Short Introductions of /our papers/


Free-access (until Dec. 1, 2017): elsevier.com

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 solution to be absorbed into the leaf. 葉表面に堆積した粒子の量は時間とともに減少した。サブミクロン硫酸アンモニウム(AS)粒子が葉表面に堆積し、脱離溶液中のSO42−などのイオンが葉に吸収される可能性が高い。

Continue reading “PAPER: Spraying water-soluble particles to komatsuna leaves. 小松菜に水溶性微粒子を散布したら・・”

A doctoral student presented in Asian Aerosol Conference 2017 (Jeju, Korea)博士学生が韓国で発表した。

Presenter: F. Faizal (Doctoral student), Co-author: S. Yokote (Master-student), M. P. Khairunnisa (former doctoral student, now with Ministry of Higher Education, Malaysia), W. Lenggoro “Direct- and Electrospray-Depositions of Particles Derived from Burning Candles” DATE: JULY 2 – 6, 2017,  VENUE: ICC JEJU, JEJU, KOREA * Presentation by student >> LIST       Continue reading A doctoral student presented in Asian Aerosol Conference 2017 (Jeju, Korea)博士学生が韓国で発表した。

A book on “air pollution” matter. PM2.5の科学(畠山史郎、野口恒, 2016)

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 ::: Continue reading A book on “air pollution” matter. PM2.5の科学(畠山史郎、野口恒, 2016)

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

Other “intro” of papers from our lab >> /tag/paper/ A collaborated study with Dr. Okuda group at Keio University. エアロゾル研究 Vol. 30 (2015) No. 3 p. 190-197 (Journal of Aerosol Research) doi.org/ | ResearchGate Kelvin Probe Force Microscopyを用いたエアロゾル個別粒子の帯電状態の測定 Measurement of the Electrostatic Charging State of Individual Particles in Ambient Aerosol Using Kelvin Probe Force Microscopy (Okuda, Gunji, Lenggoro)   呼吸により人体に入る微粒子に関する課題において、微粒子の帯電状態が注目されるようになった。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新たな手法を考案した。大気環境中から捕集された微粒子の表面電位を測定し、その微粒子の電荷素量が4以上であることが明らかになった。今後は化学組成と帯電状態との関係を検討していく必要も考えられる。 Recently, the importance of electrostatic charging state to particle … Continue reading 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

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, Utility Reaction and Environment, 5(2), 43-50 (2016.Apr) Open Access: The … Continue reading BEST PAPER AWARD at International Conference (PURE 2015, Malaysia)最優秀論文賞

PAPER: Between Charged Aerosol Particles & Substrate’s Hydrophilicity. 正帯電した気中浮遊粒子が親水性が高い表面に付きやすい(新現象の発見)

Area-selective deposition of charged particles derived from colloidal aerosol droplets on a surface with different hydrophilic levels…J. Aerosol Science. (a work by Kusdianto (Doctoral student, now with ITS, Indonesia), Gen (Doctoral student, now with City Univ Hong Kong), and Lenggoro. Highlights * Charged aerosol particles were derived from spraying colloidal droplets. * Substrate with different ‘levels’ of hydrophilicity was used. * Positively charged aerosol particles … Continue reading PAPER: Between Charged Aerosol Particles & Substrate’s Hydrophilicity. 正帯電した気中浮遊粒子が親水性が高い表面に付きやすい(新現象の発見)

Kusdianto, Doctoral presentation, 19 Aug. 2014, 博士論文公聴会

19 Aug. 2014. BASE 1st floor meeting room

DOCTORAL THESIS: The role of chemical and physical properties of substrate in the deposition of particles
粒子の沈着における基板表面の物理的・化学的特性の役割
by KUSDIANTO (Also a faculty member of Department of Chemical Engineering, Institut Teknologi Sepuluh Nopember, ITS)

Go to hydropilic surface

*** PUBLICATIONS ***

PAPER: Formation of nanometer sized enzyme. 酵素のナノ粒子化

http://dx.doi.org/10.1016/j.enzmictec.2014.06.002 Transformation of an enzyme: from aqueous suspension to fine solid particles via electrospraying route 静電噴霧法による糖転移酵素の微粒化 by* Dept. of Process and Food Engineering, Univ. Putra Malaysia; * Biotechnology Research Institute, Univ. Malaysia Sabah; * Faculty of Chemical Engineering, Univ. Teknologi MARA; * Grad. School of Bio-Applications and Systems Engineering, Tokyo Univ. of Agriculture and Technology JOURNAL: Enzyme and Microbial Technology HIGHLIGHTS: •Nanometer-sized CGTase enzyme particles. … Continue reading PAPER: Formation of nanometer sized enzyme. 酵素のナノ粒子化

PAPER: Deposition of gas-phase particles on both sides. 薄板の裏側まで微粒子が沈着

Simultaneous deposition of submicron aerosols onto both surfaces of a plate substrate by electrostatic forces M. Gen, S. Ikawa, S. Sagawa, I. W. Lenggoro e-Journal of Surface Science and Nanotechnology, 2014. http://dx.doi.org/10.1380/ejssnt.2014.238 Open access. サブミクロンの帯電粒子を気中に浮遊させて、目的の平板の両面に粒子群が沈着しているメカニズムを説明した。 【展開】植物の葉に沈着する微粒子の挙動(農薬等の散布法)の理解 【展開】自動車等の静電塗装の分野 Continue reading PAPER: Deposition of gas-phase particles on both sides. 薄板の裏側まで微粒子が沈着

3 students presented at 2 conferences, 学生の学会発表

2014.March, Gifu 化学工学会年会 Annual Conference of Society of Chemical Engineers, Japan Surface characterization of organic thin film based on particle assembly (Oral) 微粒子の集積による有機薄膜の表面解析 (D3) 玄 大雄・Wuled Lenggoro Keywords: Coating, Nanoparticle, Aerosol http://www3.scej.org/meeting/79a/ 2014.March, Gifu 化学工学会年会 Annual Conference of Society of Chemical Engineers, Japan Immobilization and concentration control of fine particles in agar matrix by electrophoresis (Poster) 電気泳動による寒天ゲルへの微粒子の固定化と濃度分布の調整 (M2) 渡辺 あずさ・Wuled Lenggoro Keywords: Hydrogel, Nanoparticle, Electrophoresis … Continue reading 3 students presented at 2 conferences, 学生の学会発表

2013 Kanji Takahashi Award for our paper, 高橋幹二賞

2013 Kanji Takahashi Award (from Japan Association of Aerosol Science and Technology) for our paper published in 2011: Measurement of Model Aerosols Containing Two Metal Components Formed via Cooling and Dilution Routes, Authors: Naoya HAMA, Yukie TAKASHIMA, Masao GEN, Mayumi TSUKADA, Hidehiro KAMIYA and Wuled LENGGORO* Journal of Aerosol Research, エアロゾル研究, 26, 277-285 (2011) For full article/PDF = jstage, Or from: researchgate.net In 2010-2011, Hama … Continue reading 2013 Kanji Takahashi Award for our paper, 高橋幹二賞

PAPER. Visualization of particles on the leaves in trees, 葉面上の粒子の可視化

ARTICLE: Visualization of artificially deposited submicron-sized aerosol particles on the surfaces of leaves and needles in trees 植物(樹木)の葉表面に任意的に微粒子を沈着し、その「可視化」技術に関する研究成果。 Authors: K. Yamane, S. Nakaba, M. Yamaguchi, K. Kuroda, Y. Sano, I. W. Lenggoro, T. Izuta, R. Funada Journal: Asian Journal of Atmospheric Environment. For PDF: http://asianjae.org/browse_sub.html?class_no2=30 Authors’ Affiliations 1) Faculty of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu, Tokyo 183-8509, Japan 2) Forestry and … Continue reading PAPER. Visualization of particles on the leaves in trees, 葉面上の粒子の可視化