PAPER: Leaf waxes to prevent “incoming” particles. 大気中微粒子の付着を防止する葉の仕組み

Other “intro” of papers from our lab >> /tag/paper/


Journal of Plant Research (13 June 2016) DOI 10.1007/s10265-016-0839-7
plants-Fuchucampus“Effect of epicuticular wax crystals on the localization of artificially deposited sub-micron carbon-based aerosols on needles of Cryptomeria japonica (Sugi)”

電界放出型走査電子顕微鏡(FE-SEM)によるスギ(代表的な針葉樹種)の葉表面に人工的に散布されたサブミクロンサイズの炭素系粒子の局在を調べました。気孔の機能を保持するために、密に分布されたエピクチクラワックス結晶は、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。from-nakaba-2016-JPlantRes

Elucidation of the mechanism of adsorption of particles suspended in the gas-phase (aerosol) to the outer surfaces of leaves provides useful information for understanding the mechanisms of the effect of aerosol particles on the growth and physiological functions of trees. We examined the localization of artificially deposited sub-micron-sized carbon-based particles on the surfaces of needles of Cryptomeria japonica, a typical Japanese coniferous tree species, by field-emission scanning electron microscopy (FE-SEM).  Our results suggest that epicuticular wax crystals affect distribution of particles on needles. Therefore, densely distributed epicuticular wax crystals might prevent the deposition of sub-micron particles on the surfaces of needles to retain the function of stomata.


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PAPER: Dispersing particles then Raman spectroscopy: New concept for surface analysis. 新しい表面分析法:ラマン分光用の粒子集積

Other “intro” of papers from our lab >> /tag/paper/


* Main researcher: Masao Gen,  a doctoral student: 2011/10-2014/6. Joined Tohoku University (2014-2015, Researcher/Assistant professor), then City Univ. of Hong Kong. He applied this new method (Electrospray-Surface Enhanced Raman Spectroscopy (ES-SERS) for probing particulate matter (PM) collected as “air pollutant” Atmos. Chem. Phys. (2017)

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M. Gen & I. W. Lenggoro, RSC Adv. (2015)
Gen & Lenggoro, RSC Adv. (2015)

Aerosol nanoparticle sensor system for probing a dip-coated layer of organic molecules, at sub-100 nm resolution .気中分散微粒子を用いたSERS法によって、表面上の分子「パターン」に対して直接「検査」可能な技術

関連技術 Related topics: 残留農薬の検出に向けて, Detect a pesticide in the field.

There’s more…さらに詳細に

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

PAPER: Effect of water-soluble particles on the growth of plants (2 years)…植物に水溶性微粒子を与えていたら?

JOURNAL: Atmospheric Environment (2014) http://www.sciencedirect.com/science/article/pii/S1352231014000405 Effects of 2-years exposure to (sub-micron) ammonium sulfate particles on growth and gas exchange rates of Fagus crenata (ブナ), Castanopsis sieboldii (スダジイ), Larix kaempferi (唐松) and Cryptomeria japonica (スギ) seedlings •No significant effect of the particles on growth was observed after 2 years. •Net photosynthetic rates of 3 species were not significantly changed. •Net photosynthesis of Cryptomeria japonica was relatively sensitive to (NH4)2SO4. … Continue reading PAPER: Effect of water-soluble particles on the growth of plants (2 years)…植物に水溶性微粒子を与えていたら?

Student as a project leader in a MEXT/TUAT program, 学生が研究代表者

Masao Gen, a doctoral student got a grant for his project on advancing a sensor technology to detect pesticide on-site. Sponsor = Innovation Advancement Organization (IAO), based on a TUAT/MEXT project. 博士課程後期の学生(玄)が申請した研究プロジェクトが採択されました。 The program includes few-days training at SRI (Stanford Research Institute, California) and Cornell University. [イノベーション推進機構より] 本プロジェクトは、文部科学省実践型研究リーダー養成事業「ニーズ展開実践型高度研究人材養成モデル化事業」の一環として、博士学生に対して専門分野の枠を越えた研究活動、インターンシップ、並びに産業界との連携を包括的に支援、促進することによって、事前学習で習得した知識や技術を実践し、研究リーダーに求められる能力、資質を磨いていくことを目的としています。博士後期課程学生については、研究代表者として自ら研究チームを組織し、企業等の課題を解決できる企画・提案を実践していくとともに、その後共同研究等に発展することを奨励することとし、これに必要な経費を支援します。 http://www.tuat.ac.jp/~innovate/student/collect.html#2 A reference of our Pesticide Detector (Gen et al., 2011) Continue reading Student as a project leader in a MEXT/TUAT program, 学生が研究代表者

PAPER. Measuring carbon particles on leaf surface, 葉面上の炭素系粒子の計測手法

Journal: Asian Journal of Atmospheric Environment (2012) Optical method for measuring deposition amount of black carbon particles on foliar surface Authors: M. Yamaguchi, K. Takeda, Y. Otani, N. Murao, H. Sase, I. W. Lenggoro, K. Yazaki, K. Noguchi, A. Ishida, T. Izuta Full article (PDF): http://asianjae.org/browse_sub.html?class_no2=30 研究機関: 東京農工大学(農), 北海道大学(工), 日本環境衛生センター/アジア大気汚染研究センター, 森林総合研究所, 東京農工大学(工), 京都大学生態学研究センター Affiliations 1: Faculty of Agriculture, Tokyo University of Agriculture and Technology, Fuchu, Tokyo … Continue reading PAPER. Measuring carbon particles on leaf surface, 葉面上の炭素系粒子の計測手法

Visited Institut Teknologi Bandung and Universitas Padjadjaran (12 Nov.)

After attended and presented at RSCE 2012 in Bali, on 12 Nov. Lenggoro visited two campuses in Bandung, West-Jawa, Indonesia. Institut Teknologi Bandung (ITB) and Universitas Padjadjaran (UnPad) 1. Department of Environmental Engineering, ITB 2. Department of Physics, ITB 3. Department of Physics, UnPad. 4. Faculty of Agriculture, UnPad (with a seminar “Inter-departmental collaboration: Particle Engineering for Agriculture”) Continue reading Visited Institut Teknologi Bandung and Universitas Padjadjaran (12 Nov.)

Presented in Asian Particle Technology Symposium 2012, Singapore

Lenggoro and Gen (doctoral student) presented two papers in 5th Asian Particle Technology Symposium, Singapore 3-5 July 2012 Proceedings in USB-memory, ISBN: 978-981-07-2518-1 172: Oral: Assembly of Gas-Phase Nanoparticles on a Structural Substrate for Spectroscopic-Based Sensor to Detect a Pesticide Masao Gen*, Hideo Kakuta, Yoshihito Kamimoto, Wuled Lenggoro 銀ナノ粒子のエアロゾル集積によりセンサーを作製し、ラマン分光法との組み合わせを駆使して、現場(農場)における残留農薬の計測を試みた。(博士課程後期の玄にとっては初めての国際会議で口頭発表でした) 122: Oral: A Chamber System with Aerosol Generators for Exposures of Plants to Submicrometer-Sized Particles Wuled Lenggoro*, Masao … Continue reading Presented in Asian Particle Technology Symposium 2012, Singapore

Chaired – Tenure-track faculty presentation 25 June

W. Lenggoro chaired the first inter-departmental research presentation, by the current enure-track (new) faculties at Fuchu campus. 1. Dr. Satoshi Nakaba, Dept. of Environmental and Natural Resource Sciences – “Wood, Plant, Cell” 2. Dr. Nakamoto Keiichi. Dept. of Mechanical System Engineering – “Machine tool” 25 June 2012, Place: Headquarter building of Agriculture, Fuchu Continue reading Chaired – Tenure-track faculty presentation 25 June

2012.3: presentation SCEJ, 学会発表

2012/3/15 Tokyo, SCEJ Annual Meeting Fabrication of particle-based probes and a protocol for detection of pesticide spread in the environment (in Japanese) by Gen, Kakuta, Kamimoto, Lenggoro 化学工学会第77回年会 農薬の飛散分布の把握に向けた粒子構造形成と検出技術の開発 (D1)玄 大雄・ (植物情報物質研究センター) 角田 英男・ (神奈川県産業技術センター) 上元 好仁・Wuled Lenggoro 2012/3/16 Tokyo, SCEJ Annual Meeting Influence of sugar-to-carbon conversion on the synthesis of metal oxide powders (in Japanese) by Sato, Widiatmoko, Lenggoro 化学工学会第77回年会 金属酸化物の合成における糖類の炭素化が粒子性状へ及ぼす影響 (M2)佐藤 広崇, (D1)Pramujo … Continue reading 2012.3: presentation SCEJ, 学会発表

A Visiting Fellow: Dr. Asep Sofyan (Jan. 2012)

January 16-21 A visiting fellow: Dr. Asep Sofyan (from Department of Environmental Engineering, Institut Teknologi Bandung, ITB) http://www.ftsl.itb.ac.id/ Project: Impact of particles on the plants (food-type) Sponsor: Indonesian government and Japanese MEXT Grant-in-Aid for Scientific Research on Innovative Areas (2008-2013) He was also our visitor in 2008 under JSPS fellowship program: TUAT Biomass project for South-East Asian countries. Our visitors from abroad Continue reading A Visiting Fellow: Dr. Asep Sofyan (Jan. 2012)

SSSV, 90 days Program, Indonesian students, 農工融合研修

JASSO/TUAT-funded: SSSV/Short-Stay (90 days) Program for Indonesian students on Agriculture and Engineering 日本インドネシア農工融合国際人材育成研修プログラム FELLOWS (Graduate Students) – Listya Citra Suluhingtyas (ITB) 2011/10- – Jenny Rizkiana (ITB) 2011/10- – Hanif Yuliani (UI) 2011/10- – Ira Trisnawati (UI) 2011/10- – Yessy Velina (IPB) 2011/12- – Effendi (IPB) 2011/12- Institut Teknologi Bandung: ITB; Institut Pertanian Bogor: IPB, Universitas Indonesia: UI Activities: Oct.6: Lab Tour, Lenggoro Lab Oct.7: Lab … Continue reading SSSV, 90 days Program, Indonesian students, 農工融合研修