Exciting discovery! 🍅Cutting the stem of tomato seedlings allows for the introduction of particles up to 110nm into plants. This shows promising applications in the fields of agriculture and biotechnology.
Tag: ecosystem
Acid treatment enhances conductivity of candle-soot films. 酸処理で高い導電率！ロウソクのすす粒子の新たな可能性
Our paper (2023) Conductive particulate films fabricated by electrospray deposition of candle soot suspensions with acid treatments 酸処理したロウソクの煤（すす）の静電噴霧堆積によって作製した導電性微粒子膜
学生が2010年に作成した動画. 5 min. video created by students in 2010
Made by: Seki Akito (undergrad. final project), Iguchi Yuki (Master 1st year) in 2010.
Nanocellulose from oil palm mesocarp fiber. アブラヤシ中皮繊維のナノセルロース化
低濃度のシュウ酸二水和物を組み合わせた分離技術。高い結晶化度。100nm以下の微粒子。Separation technology combined with low concentration of oxalic acid dihydrate. High crystallinity. Particle size is less than 100nm.
Fight ammonium pollution with clay: 粘土でアンモニウム汚染に立ち向かう！水質浄化や農業などで有用な可能性
Adsorption capacity was examined after up to 2 h of sample exposure.
Adsorption isotherm for bentonite showed a fit with Langmuir model.
吸着容量は、最大2時間のサンプル暴露後に調べた。ベントナイトの吸着等温線は、Langmuirモデルにフィットした。
Project. Circular food system (2020-2030) 循環型フードシステム. 食を見直す
地球規模の食料問題の解決と人類の宇宙進出に向けた昆虫が支える循環型食料生産システムの開発. “Insect-Based Sustainable Food Production Systems toward Global Food Security and Human Space Exploration Project”
Consistent particle deposition & localization in leaf structures. 様々な葉の構造で一貫した粒子の沈着と局在
堆積した粒子は凝集せず、葉の構造に依存性がないことを確認した
The particles were deposited on the leaves and needles in the same manner, regardless of leaf structure.
A device for real-time measurement of particulate matter PM10.粒子状物質をリアルタイムに測定する装置 Arduino & Dust sensor
Arduino-based real-time PM10 sensor, with temperature and humidity. マイクロコントローラArduinoを用いたオンラインPM10 (10μm未満の粒子状物質) 測定を開発。数1000 μg/m3 の濃度も測定可。
After spraying of water-soluble particles on a crop (komatsuna). 小松菜に水溶性微粒子を散布していた後は？
Ammonium sulfate particles deposited on the leaf deliquesced, allowing ions such as SO42− in the solution to be absorbed into the leaf. サブミクロン硫酸アンモニウム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。
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 :::
Does the leaf structure prevent the aerosol deposition?植物葉の構造はエアロゾルの沈着を妨げるのか? We learn an engineering thing.
Epicuticular “wax” crystals affect distribution of incoming aerosol particles on leaf surfaces. 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、微粒子の付着を防止する役割？
エアロゾル科学技術への静電噴霧の展開(Article) Application of Electrosprays
2007年に広島大学から東京農工大学に異動し，新たに研究室を立ち上げた時には静電噴霧法から離れようと考えた時もありましたが，新たな展開を見つけたことにより，現在も静電噴霧法に関連した研究を継続しています。
Award: Charging state of particles collected from air 大気中から捕集した粒子の帯電状態を調べた（学会賞）
呼吸により人体に入る微粒子の帯電状態が注目された。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
The charged state of the collected atmospheric particles.捕集された大気粒子の帯電状態
Charging state is important to understand the process of adverse health effects of PM. 健康影響を調べるために微粒子の帯電状態を知ることは重要
PM2.5 collected on the filters were likely to carry a negative charge 捕集された微粒子の帯電状態は主にマイナス帯電
Particles on bio-composite surface. ココナツ殻由来素材の表面に微粒子を集積
Bio-composite（バイオコンポジット）is a composite material formed by a matrix (resin) and a reinforcement of natural fibers.生物由来素材を組み合わせて作った素材
Spraying particles + Surface-Enhanced Raman Scattering = `Probing organic molecules. 粒子散布とSERS法による分子層を可視化する新計測法
World-1st. Nanoparticle sensor system for probing organic molecules. Sub-100 nm resolution . 世界初。応用は残留農薬, PM2.5, 半導体表面の検査など
Plant-derived materials for battery. グルコース添加の合成で電池用粉末は「質」が向上
Without a milling process (break-down) process, Lithium-battery material can be synthesized, in submicron size (100-600 nm) through glucose-assisted combustion synthesis.（植物由来原料）グルコースを添加した新しい「燃焼合成法」により二次電池用粉末をサブミクロンサイズで合成できた。
Novel approach to measuring surface potential in micrometer-sized areas. Insight from Vegetation/Leaves. マイクロメートル領域における表面電位の測定法: 植物から学ぶ。親水性とエアロゾル付着しやすさを示す方法
現象の発見。大気汚染と植物表面の理解。新しい材料の開発。Hints for material design, and for research on the deposition of airborne particles on plant surfaces
Aerosols deposit behind the sheet (Plant leaf model)?（植物葉モデル）薄板の裏側までエアロゾルが沈着する？
Simultaneous deposition of submicron aerosols onto both surfaces of a plate substrate by electrostatic forces We demonstrate one-step deposition of submicrometer-sized particles suspended in the gas-phase onto a plate type substrate using an electrostatic-assisted spray system. The particles were deposited on plate-type metallic surfaces, on both front and rear sides of the substrate. This “both-side”…
博士D. Thesis (2014) Immobilization of particles from gas phase onto surfaces 気相からの粒子の基板への固定化
Immobilization of submicron- and nano-particles from gas phase onto solid surfaces by external forces （外力を用いたサブミクロン粒子とナノ粒子の気相から固体基板への固定化）(Thesis is written in English) 2014/5/23 Friday, 15:00 ~ 16:30, BASE1階会議室 発表者： 玄 大雄 (GEN, Masao) ** ** After working with WPI-AIMR, Tohoku University as Assistant Professor, he joined City University of Hong Kong Keywords: Deposition/assembly of particles, Particle exposure system for…
What happens when we spray water-soluble “air pollution” particles to plants for 2 years? 水溶性 「大気汚染」 粒子を植物に2年間散布したらどうなるでしょう?
JOURNAL: Atmospheric Environment (2014) https://doi.org/10.1016/j.atmosenv.2014.01.023 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…
Our results in a popular book (about PM2.5)
Our result were introduced in a book on PM2.5 (Author: Shiro Hatakeyama (TUAT) 2014) 越境する大気汚染: 中国のPM2.5ショック 著者: 畠山史郎 ISBN: 978-4-569-81740-8 (842 Yen) ==>> Book/Chapters by Wuled Lenggoro
目に見えない粒子がもたらす先入観 (Essay) Preconception caused by invisible particles.
この粒子状物質に不快感や不安を感じる時、それは目に見えるかどうか、つまり0.3μmが境目のサイズとなる。ここでも0.3μmが重要な値となる。…when someone feel discomfort or uneasiness with this particulate matter, whether it is visible or not, that is, 0.3 μm is the size of the boundary.
Portable sensor system to detect pesticide residues 携帯型残留農薬検出システム Iinoya Award (JAAST)
“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
Particles & Transfer 