Picked up in Nature portfolio!
New paper has been published in Scientific Reports!
Inactivation kinetics of 280 nm UV‑LEDs against Mycobacterium abscessus in water
Scientific Reports 13, 2186, 2023
New paper has been published!
Remote Monitoring of a Small Water Supply Facility via Simple Radio Modules Based on Low-Power Wide-Area (LPWA) Network Technologies (in Japanese)
Special seminar on Nov 17
We had a special seminar on Nov 17 for the Japan-Germany-Czechia international collaboration on UV-LED applications to water treatment, supported by JST-SICORP EIG-CONCERT Japan project. Thank you all for joining us then!
Nobel Prize Dialog video released!
I joined the panel at the Nobel Prize Dialog 2022.
Nobel Prize Dialogue, approaching on Oct 23!
I will be one of the panelists at the event “Nobel Prize Dialogue” in Yokohama and online. The theme of the event is “Water Matters”, and some Nobel Prize winners will be deliver message on water and science!
Visit here for the details. The live broadcasting will be available at this website.
On the panel at Nobel Prize Dialogue!
I will be one of the panelists at the event Nobel Prize Dialogue in Yokohama and online. The theme of the event is “Water Matters” and some Nobel Prize winners will be on the panel.
Visit here for the details and registration.
How to determine fluence in bench-scale UV-LED setups?
A new paper has been published on fluence determination in UV-LED setups, taking the quasi-point source properties of UV-LEDs into consideration. The standard method by Bolton and Linden (2003) for mercury UV lamps is followed with modifications to tune it up for UV-LED setups.
Shinya Watanabe and Kumiko Oguma
A Simple and Practical Method for Fluence Determination in Bench-Scale UV-LED setups. Photochemistry and Photobiology, 2022. Just accepted.
Review paper on UV inactivation of viruses
A new review paper is now published with 93 references including most recent SARS-CoV2 inactivation data by UV. My new challenge is to have this in a journal of applied physics, not environmental engineering!
Oguma and Rattanakul 2021. Jpn. J. Appl. Phys.
New paper published!
COVID-19 pandemic urges people to explore effective measures against viruses. This is a review paper on virus removal from water.
Comparative effectiveness of membrane technologies and disinfection methods for virus elimination in water: A review
Now on AFP BB
My research is now on AFP BB (only in Japanese).
New Paper: UV disinfection of platelet concentrates
Working with Japanese Red Cross, I have published the first paper on UV-LED disinfection of human platelet concentrates, which can potentially enhance the safety of blood transfusion. Very challenging and interesting application!
UV light-emitting diode (UV-LED) at 265 nm as a potential light source for disinfecting human platelet concentrates. PLOS ONE, May 20, 2021
New paper accepted!
A review paper on chronic kidney disease in Sri Lanka has been accepted by the Journal of Water and Health. This issue is sometimes called “a mystery in Sri Lanka”, because the cause of the disease remains unknown for decades in spite of local and international efforts to reveal it. This review paper covers most recent outstanding research to understand this public health issue.
Sachithra Imbulana, Kumiko Oguma
Groundwater as a potential cause of chronic kidney disease of unknown etiology (CKDu) in Sri Lanka: A review
Journal of Water and Health, 2021 (in press)
Plenary talk at international conference
I will deliver a plenary talk at International Conference on UV LED Technologies & Applications (ICULTA) online.
IUVA Asia Workshop online
Registration is full now. Apologies and Thanks!
New article on UV-LED reactor at a public water supply
New article is published in IUVA journal ‘UV Solutions’ on UV-LED reactor installation at a public water supply in Japan.
Deep UV LED Equipment in Operation for Municipal Drinking Water Supply
Majid Keshavarzfathy, Yamato Hosoi, Kumiko Oguma, Fariborz Taghipour.
Experimental and computational evaluation of a flow-through UV-LED reactor for MS2 and adenovirus inactivation.
Chemical Engineering Journal, Available online 19 September 2020, 127058.
Kumiko Oguma and Shinya Watanabe
Field Test of Ultraviolet Light-Emitting Diode (UV-LED) Apparatuses as an Option of Decentralized Water Treatment Technologies (in Japanese).
Journal of Japan Society on Water Environment 43(4), 119-126, 2020.
Sachithra Imbulana, Kumiko Oguma, Satoshi Takizawa.
Evaluation of groundwater quality and reverse osmosis water treatment plants in the endemic areas of Chronic Kidney Disease of Unknown Etiology (CKDu) in Sri Lanka. Science of The Total Environment, 745, 140716, 2020.
Interview Article on “Top Researchers”
Interview article is now on “Top Researchers”! (in Japanese)
Solar-powered UV-LED project is now on the web!
Our solar-powered UV-LED project in the Philippines is now on the web.
University of Tokyo, San Agustin to aid communal waters in Guimaras
Now on Daily Guardian!
University of Tokyo, San Ag team up to aid communal waters in Guimaras
New paper is now available online!
Bernice Yu Jeco, Aris Larroder and Kumiko Oguma,
Techno-social feasibility analysis of solar-powered UV-LED water treatment system in a remote island of Guimaras, Philippines. Journal of Photonics for Energy, 9(4), 043105, 2019.
Kumiko Oguma, Surapong Rattanakul and Mie Masaike.
Inactivation of health-related microorganisms in water using UV light-emitting diodes. Water Science and Technology: Water Supply, 19(5), 1507-1514. 2019. doi: 10.2166/ws.2019.022
New Paper is just accepted!
Bernice Yu Jeco, Aris Larroder and Kumiko Oguma. 2019. Techno-social feasibility analysis of solar-powered UV-LED water treatment system in a remote island of Guimaras, Philippines. Journal of Photonics for Energy, in press.
IUVA World Congress in Sydney was completed!
IUVA World Congress in Sydney was completed in great success! Thank you so much for your support and contribution!!
Invited presentations completed!
・清華大学主催、Water Treatment symposium、蘇州、中国. (2018.10.29)
・ソウル国立大学主催、Agricultural Biotechnology Symposium 2018 on Innovative Control Methods for Food Safety. ソウル、韓国. (2018.11.2)
・光とレーザーの科学技術フェア2018、東京. (2018.11.15) 」
IUVA News(Vol.20, Issue 1, 2018)
An article on UV-LED applications for water treatment is available in IUVA News (Vol.20, Issue 1, 2018).
Innovative UV Application Award
I received “Innovative UV Application Award” at International Ultraviolet Association World congress 2017 on 19 September 2017.
IUVA Symposium, Tokyo
IUVA Symposium UV innovations: Toward Sustainable Water Use, on: April 22, 2016.
Thank you for your participation ! Schedule
Best teaching award of UTokyo
I received Best teaching award of the University of Tokyo on 4 December 2014.