Research field (4)：
Bacteriology
, Pharmaceuticals - health and biochemistry
, Environmental policy and society
, Environmental impact assessment
Research keywords (6)：
衛生化学
, 微生物生態学
, 環境微生物学
, Environmental Science and Microbiology
, Microbial Ecology
, Environmental Microbiology
Research theme for competitive and other funds (20)：
2022 - 2025 新規センサの開発による多点同時観測システムの構築とPM0.1個人暴露の推定
2020 - 2022 Development of environmental evaluation method based on simultaneous monitoring of air quality and human behavior followed by application to the smart city
2019 - 2022 Development of PM0.1 real-time sensor for IoT networks
2015 - 2020 Microorganisms in a Confined Environment
2015 - 2020 Integral Understanding of Life-regulation Mechanism from "SPACE"
2016 - 2019 Development of an aerosol flow cytometry technology for online measurement of airborne microorganisms
2009 - 2012 Real-time and on-site monitoring of bacterial cells in freshwater environments by using a microfluidic system
2005 - 2007 Research on long distance movement of bacteria by Asian dust
2004 - 2006 Analysis of different processes of gene transfer in aquatic ecosystems using the Aquatron
2003 - 2005 Microbiological environmental assessment in Southeast Asia
2002 - 2004 Transfer dynamics of microbial genes among various environments : to know destiny of genes responsible for drug resistance and pathogenicity in environments.
2001 - 2003 BIOLOGYCAL ESTIMATION OF AGUATIC ENVIRONMENT IN SOUTHEAST ASIA BYDNA MICROARRAY
2001 - 2003 Analysis of gene transfer and expression mechanisms in aquatic ecosystems using the Aquatron
1999 - 2000 Investigation of environmental pollution in Southeast Asia
1999 - 2000 Development of fluorescence microscopic image analyzing system for rapid detection of bacterial cells
1998 - 1999 Research on physiology and ecology of pathogenic bacteri in viable but nonculturable state
1993 - 1993 GUI環境下の遺伝子解析ソフトウェアの作成
1991 - 1991 モデル生物のゲノム解析の整理システムの検討
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Papers (178)：
Yoshihiko Koizumi, Tomoaki Ichijo, Kimiko Uchii, Masao Nasu. Changes in bacterial diversity and community structure in drinking water distribution system revealed by high throughput sequencing. Journal of Microorganism Control. 2023. 28. 1. 27-34
Mayumi Mimura, Yoshihiko Koizumi, Masashi Wada, Tomoaki Ichijo, Kimiko Uchii, Masao Nasu. Microbial Water Quality Assessment of Private Wells Using 16S rRNA Gene Amplicon Sequencing with a Nanopore Sequencer. Biol. Pharm. Bull. 2023. 46. 2. 263-271
Tomoaki Ichijo, Kimiko Uchii, Kazuma Sekimoto, Takashi Minakami, Takashi Sugita, Masao Nasu, Takashi Yamazaki. Bacterial bioburden and community structure of potable water used in the International Space Station. Scientific Reports. 2022. 12. 1. 16282
M. Mimura, T. Baba, M. Wada, M. Furuuchi, M. Nasu. Suspension of Fine Particles in Air and their Removal by Ventilation in an Indoor Environment as a Model of a Pharmaceutical Manufacturing Facility. Pharmaceutical and Medical Device Regulatory Science. 2021. 52. 8. 657-661
