Masafumi FUJITAProfessor
■Researcher basic information
Organization
- College of Engineering Department of Urban and Civil Engineering
- Graduate School of Science and Engineering（Master's Program） Major in Urban and Civil Engineering
- Graduate School of Science and Engineerin（Doctoral Program） Major in Society's Infrastructure Systems Science
- Global and Local Environment Co-creation Institute
- Faculty of Applied Science and Engineering Domain of Urban and Civil Engineering
Research Areas
- Social infrastructure (civil Engineering, architecture, disaster prevention), Civil engineering (environmental systems), Water and environmental engineering
- Environmental science/Agricultural science, Environmental load reduction/restoration technology, Environmental engineering and reduction of environmental burden
- Environmental science/Agricultural science, Environmental load/risk assessment, Modeling and technologies for environmental conservation and remediation
- Environmental science/Agricultural science, Environmental impact assessment
Educational Background
- Apr. 1998 - Sep. 2001, The University of Tokyo, Graduate School of Engineering, Department of Urban Engineering
- Apr. 1996 - Mar. 1998, Ibaraki University, Graduate School of Science and Engineering, Department of Urban and Civil Engineering
- Apr. 1992 - Mar. 1996, Ibaraki University, College of Engineering, Department of Urban and Civil Engineering
Career
- Apr. 2024 - Present, The Open University of Japan, Part-time Lecturer
- Apr. 2022 - Present, Ibaraki University, Global and Local Environment Co-creation Institute, Deputy Director
- Apr. 2022 - Present, Ibaraki University, Global and Local Environment Co-creation Institute, Professor
- Apr. 2018 - Mar. 2022, Ibaraki University, Department of Urban and Civil Engineering, Associate Professor
- Apr. 2010 - Mar. 2018, Ibaraki University, Department of Urban and Civil Engineering, Associate Professor
- Sep. 2012 - Aug. 2013, The University of Auckland, School of Environment, Visiting Researcher
- Apr. 2011 - Mar. 2013, Center for Environmental Science in Saitama, Visiting Researcher
- Apr. 2008 - Mar. 2010, Ibaraki University, Department of Urban and Civil Engineering, Lecturer
- Apr. 2008 - Mar. 2009, University of Yamanashi, Department of Civil and Environmental Engineering, Adjunct Lecturer
- Apr. 2007 - Mar. 2008, University of Yamanashi, Department of Civil and Environmental Engineering, Assistant Professor
- Apr. 2003 - Mar. 2007, University of Yamanashi, Department of Civil and Environmental Engineering, Research Associate
- Oct. 2001 - Mar. 2003, Toyohashi University of Technology, Department of Ecological Engineering, Postdoctoral Fellow
External link
■Research activity information
Award
Paper
- Real-time estimation of nitrifying bacteria concentration by using ammonia sensors installed in circulating nitrification and denitrification process (in Japanese)
Yusuke Hososhima; Guang-yao Zhao; Masafumi Fujita
Japanese Journal of JSCE, Jan. 2026, [Reviewed] - Estimation of saltwater intrusion in the downstream of urban river using long short-term memory (in Japanese)
Sosuke Sato; Masafumi Fujita
Japanese Journal of JSCE, Jan. 2026, [Reviewed] - Responses of antioxidant markers and valve activity of the brackish water clam Corbicula japonica under single/combined exposures of polystyrene microplastics and thermal stress (in Japanese)
Keisuke Hayakawa; Masafumi Fujita
Japanese Journal of JSCE, Nov. 2025, [Reviewed] - Effects of granulated coal ash used for sediment improvement on the brackish water clam Corbicula japonica (in Japanese)
Takuro Sugawara; Masafumi Fujita
Japanese Journal of JSCE, Nov. 2025, [Reviewed] - Parallel hybrid ordinary differential equation for modeling biological phosphorus removal modified for enhanced predictive performance and physical interpretability
Guang-yao Zhao; Hiroaki Furumai; Masafumi Fujita
Journal of Environmental Management, Apr. 2025, [Reviewed] - Comprehensive assessment of multiple biomarker mechanisms in the brackish water clam Corbicula japonica exposed to polystyrene microplastics using structural equation modeling
Henry Kasmanhadi Saputra; Nanami Miura; Preeti Pokhrel; Guang-yao Zhao; Masafumi Fujita
Science of the Total Environment, Nov. 2024, [Reviewed] - Supporting data–enhanced hybrid ordinary differential equation model for phosphate dynamics in municipal wastewater treatment
Guang-yao Zhao; Hiroaki Furumai; Masafumi Fujita
Bioresource Technology, Oct. 2024, [Reviewed] - Enhancing interpretability of tree-based models for downstream salinity prediction: Decomposing feature importance using the Shapley additive explanation approach
Guang-yao Zhao; Kenji Ohsu; Henry Kasmanhadi Saputra; Teruhisa Okada; Jumpei Suzuki; Yuji Kuwahara; Masafumi Fujita
Results in Engineering, Sep. 2024, [Reviewed] - Antioxidant activity of conventional activated sludge in a municipal wastewater treatment plant
Jia-hao Deng; Feng-yu Wang; Guang-yao Zhao; Masafumi Fujita
Journal of Water and Environment Technology, Feb. 2024, [Reviewed] - Integrated biomarker responses of a brackish water clam to global warming conditions
Preeti Pokhrel; Jumpei Suzuki; Masafumi Fujita
Journal of Water and Environment Technology, Dec. 2022, [Reviewed] - Machine learning estimation of biodegradable organic matter concentrations in municipal wastewater
Guang-yao Zhao; Shunya Suzuki; Jia-hao Deng; Masafumi Fujita
Journal of Environmental Management, Dec. 2022, [Reviewed] - Tolerance of benthic foraminifer Calcarina gaudichaudii to polycyclic aromatic hydrocarbon pyrene: Effects on photosynthesis
Shumona Akther; Wenzhao Sun; Jumpei Suzuki; Masafumi Fujita
Coral Reefs, Nov. 2022, [Reviewed] - Effects of sediment composition on valve opening-closing responses of brackish water clam Corbicula japonica (in Japanese)
Nanami Miura; Jia-hao Deng; Qingxu Wu; Jumpei Suzuki; Masafumi Fujita
Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering), Nov. 2022, [Reviewed] - Antioxidant capacity and carbon-based scope for growth of brackish water clams Corbicula japonica under the combined effects of natural and anthropogenic factors
Preeti Pokhrel; Sayaka Mashiko; Shumona Akther; Jumpei Suzuki; Masafumi Fujita
Environmental Pollution, Sep. 2022, [Reviewed] - A simulation of acetate consumption and electricity generation in a single microbial fuel cell considering the diversity of nonelectrogenic bacteria
Jia-hao Deng; Guang-yao Zhao; Feng-yu Wang; Masafumi Fujita
Bioprocess and Biosystems Engineering, Sep. 2022, [Reviewed] - Assessment of heavy metal pollution in the coastal sediments of an urbanized atoll in the central Pacific: Majuro Atoll, the Marshall Islands
Shumona Akther; Jumpei Suzuki; Preeti Pokhrel; Teruhisa Okada; Masahiro Imamura; Tadao Enomoto; Yuji Kuwahara; Masafumi Fujita
Environmental Monitoring and Assessment, Nov. 2021, [Reviewed] - Physiological and biochemical responses of brackish-water clam Corbicula japonica under global-warming conditions: Water temperature, salinity, and food availability
Preeti Pokhrel; Jumpei Suzuki; Shumona Akther; Masafumi Fujita
Ecological Indicators, Oct. 2021, [Reviewed] - Evaluation of downsizing and sustainability of water distribution network in a middle sized-city (in Japanese)
Masafumi Fujita; Yuji Kuwahara; Kaoru Kobayashi; Toru Masuzawa
Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research), Sep. 2021, [Reviewed] - Effects of water pollution due to wastewater on photosynthetic activity and oxidative stress of large benthic foraminifera (in Japanese)
Nanami Miura; Linna Li; Wenzhao Sun; Shumona Akther; Masafumi Fujita
Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research), Sep. 2021, [Reviewed] - Antioxidant responses of a brackish water clam to sediment composition and water quality: A field experiment
Preeti Pokhrel; Hiroki Machida; Shumona Akther; Jumpei Suzuki; Masafumi Fujita
Journal of Water and Environment Technology, Aug. 2021, [Reviewed] - An assessment of photosynthetic activity in large benthic foraminifers and the optimization of light Intensity for lab-scale cultivation
Shumona Akther; Wenzhao Sun; Preeti Pokhrel; Jumpei Suzuki; Masafumi Fujita
Journal of Water and Environment Technology, Jun. 2021, [Reviewed] - The responses of oxidative stress and scope for growth of Corbicula japonica exposed to wastewater (in Japanese)
Qingxu Wu; Miki Tsuchiyama; Jumpei Suzuki; Masafumi Fujita
Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research), Dec. 2020, [Reviewed] - Behavior of eukaryotic symbionts in large benthic foraminifers Calcarina gaudichaudii and Baculogypsina sphaerulata under exposure to wastewater
Shumona Akther; Jumpei Suzuki; Preeti Pokhrel; Teruhisa Okada; Masahiro Imamura; Tadao Enomoto; Takashi Kitano; Yuji Kuwahara; Masafumi Fujita
Environmental Pollution, Oct. 2020, [Reviewed] - Enhancement of power generation in sediment microbial fuel cell for brackish condition (in Japanese)
Emiko Urasaki; Feng-yu Wang; Yuka Miyafusa; Masafumi Fujita
Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering), Oct. 2020, [Reviewed] - Investigation of valve opening-closing responses of brackish water clam Corbicula japonica exposed to environmental stress (in Japanese)
Miki Tsuchiyama; Qingxu Wu; Jumpei Suzuki; Masafumi Fujita
Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering), Oct. 2020, [Reviewed] - Development of wastewater treatment technology with power generation in sewer pipeline for an application to the Pacific atoll nations (in Japanese)
Masafumi Fujita; Thanh Hai Bui; Zeng Li; Jia-hao Deng; Feng-yu Wang; Yuji Kuwahara
Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research), Sep. 2020, [Reviewed] - Investigation of foraminifera habitat using UAV-image at Eneko island in the Majuro atoll, Marshall Islands (in Japanese)
Miho Abe; Tadao Enomoto; Jumpei Suzuki; Masafumi Fujita; Yuji Kuwahara
Journal of Coastal Zone Studies, Mar. 2020, [Reviewed] - Assessing a polluted river environment by oxidative stress biomarker responses in caddisfly larvae
Jumpei Suzuki; Daisuke Nakano; Masahiro Imamura; Ryosuke Yamamoto; Masafumi Fujita
Science of the Total Environment, Dec. 2019, [Reviewed] - Effects of components of municipal wastewater on scope for growth based on carbon mass balance in Corbicula japonica (in Japanese)
Qingxu Wu; Miki Tsuchiyama; Jumpei Suzuki; Masafumi Fujita
Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering), Oct. 2019, [Reviewed] - Utilization of a silicone rubber membrane for passive oxygen supply in a microbial fuel cell treating carbon and nitrogen from synthetic coke-oven wastewater
Feng-yu Wang; Hirokazu Matsubara; Tadashi Nittami; Masafumi Fujita
Applied Biochemistry and Biotechnology, Sep. 2019, [Reviewed] - A river monitoring based on classification of flow condition images for turbidity of river water by deep learning: Intended to the Sawatari river in Mito, Ibaraki prefecture (in Japanese)
Shoichiro Hanawa; Masafumi Fujita; Yuji Kuwahara
Journal of Japan Society of Civil Engineers, Ser. G (Environment), Sep. 2019, [Reviewed] - Oxidative stress response of caddisfly Stenopsyche marmorata larvae to abrupt hypoxia–normoxia shift
Jumpei Suzuki; Masahiro Imamura; Masafumi Fujita
Aquatic Toxicology, Jun. 2019, [Reviewed] - Oxidative stress responses to feeding activity and salinity level in brackish water clam Corbicula japonica
Preeti Pokhrel; Junko Akashi; Jumpei Suzuki; Masafumi Fujita
Science of the Total Environment, May 2019, [Reviewed] - Effects of anion surfactant on acetate removal and power generation in air-cathode microbial fuel cell (in Japanese)
Feng-yu Wang; Masafumi Fujita
Journal of Water and Waste, Mar. 2019, [Reviewed] - Change in oxidative stress biomarkers in stream caddisfly, Hydropsyche spp., larvae depending on size and season (in Japanese)
Jumpei Suzuki; Daisuke Nakano; Masahiro Imamura; Masafumi Fujita
Journal of Japan Society on Water Environment, Jan. 2019, [Reviewed] - Impacts of future climate variability on hydrological processes in the upstream catchment of Kase River basin, Japan
Preeti Pokhrel; Koichiro Ohgushi; Masafumi Fujita
Applied Water Science, Jan. 2019, [Reviewed] - Effects of water quality at the formation of hypoxic water mass on antioxidant responses of brackish water bivalve, Corbicula japonica (in Japanese)
Miki Tsuchiyama; Jumpei Suzuki; Masafumi Fujita
Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering), Oct. 2018, [Reviewed] - Development of ‘scope for growth’ assay based on carbon mass balance for brackish water bivalve Corbicula japonica (in Japanese)
Sayaka Mashiko; Jumpei Suzuki; Masafumi Fujita
Journal of Japan Society on Water Environment, Sep. 2018, [Reviewed] - Effects of water turbidity and different temperatures on oxidative stress in caddisfly (Stenopsyche marmorata) larvae
Jumpei Suzuki; Masahiro Imamura; Daisuke Nakano; Ryosuke Yamamoto; Masafumi Fujita
Science of the Total Environment, Jul. 2018, [Reviewed] - Total antioxidant responses in whole soft tissues and gills of brackish water bivalve, Corbicula japonica, exposed to municipal wastewater (in Japanese)
Yu Ikeda; Hiroki Machida; Jumpei Suzuki; Masafumi Fujita
Journal of Japan Society on Water Environment, Nov. 2017, [Reviewed] - Effects of water pollution in brackish lake on total antioxidant capacity of Corbicula japonica (in Japanese)
Yu Ikeda; Jumpei Suzuki; Masafumi Fujita
Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering), Oct. 2017, [Reviewed] - Effects of different carbon sources on enhanced biological phosphorus removal and “Candidatus Accumulibacter” community composition under continuous aerobic condition
Tadashi Nittami; Masayuki Mukai; Keisuke Uematsu; Li Wan Yoon; Sarah Schroeder; Adeline Seak May Chua; Junji Fukuda; Masafumi Fujita; Robert J. Seviour
Applied Microbiology and Biotechnology, Oct. 2017, [Reviewed] - Nitrification technique by the passive oxygen supply with gas-permeable membrane: Examination of the coke-oven wastewater treatment by two-chamber microbial fuel cell (in Japanese)
Hirokazu Matsubara; Feng-yu Wang; Masafumi Fujita
Journal of Water and Waste, Jun. 2017, [Reviewed] - Oxidative stress responses of Corbicula japonica to environmental factors in brackish lakes (in Japanese)
Yu Ikeda; Junko Akashi; Hiroki Machida; Jumpei Suzuki; Masafumi Fujita
Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering), Nov. 2016, [Reviewed] - Effects of microbial community structure on sediment oxygen consumption with anoxic water in Tokyo Bay (in Japanese)
Masanori Endo; Yukio Koibuchi; Masafumi Fujita; Akira Iimura
Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering), Nov. 2016, [Reviewed] - Water quality conservation measure by pollutant removal in the lagoon of Funafuti Atoll, Tuvalu (in Japanese)
Daiki Asahara; Mikiko Eguchi; Daisaku Sato; Masafumi Fujita; Hiromune Yokoki
Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research), Aug. 2016, [Reviewed] - Analysis of the chemical form of iron in water pipes using XAFS measurements
Iori Mishima; Yoshiyuki Ishiwatari; Takeshi Kato; Masafumi Fujita
Water Science and Technology: Water Supply, Mar. 2016, [Reviewed] - Investigation of underwater camera images and suspended solid composition in lined water pipes and polyvinyl chloride pipes (in Japanese)
Yoshiyuki Ishiwatari; Takeshi Kato; Iori Mishima; Masafumi Fujita
Journal of Japan Society on Water Environment, Feb. 2016, [Reviewed] - Characteristics of suspended solids and presence of bacteria observed in mortar lined pipes in a water distribution system (in Japanese)
Yoshiyuki Ishiwatari; Takeshi Kato; Masafumi Fujita
Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research), Nov. 2015, [Reviewed] - Assessment of heavy metal contamination of coastal sediments in Tuvalu and investigation of their removal method using an existing septic tank system (in Japanese)
Feng-yu Wang; Yoshiyuki Ishiwatari; Masafumi Fujita
Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research), Dec. 2014, [Reviewed] - Behavior of particulate elements and bacteria in a water distribution system (in Japanese)
Junko Akashi; Yoshiyuki Ishiwatari; Masafumi Fujita
Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research), Dec. 2014, [Reviewed] - Analysis of N2O production potential on nitrification process in full-scale wastewater treatment plants (in Japanese)
Iori Mishima; Yukihito Yoshida; Masafumi Fujita
Journal of Japan Society on Water Environment, Jun. 2014, [Reviewed] - Relationship between the lining materials and service ages of water pipes and the elemental composition of suspended solids in running water (in Japanese)
Yoshiyuki Ishiwatari; Norihiko Utsuno; Iori Mishima; Takeshi Kato; Masafumi Fujita
Journal of Japan Water Works Association, May 2014, [Reviewed] - Effect of ageing of pipe and lining materials on elemental composition of suspended particles in a water distribution system
Masafumi Fujita; Yoshiyuki Ishiwatari; Iori Mishima; Norihiko Utsuno; Takeshi Kato
Water Resources Management, Mar. 2014, [Reviewed] - Heavy metal contamination of coastal lagoon sediments: Fongafale Islet, Funafuti Atoll, Tuvalu
Masafumi Fujita; Yoichi Ide; Daisaku Sato; Paul S. Kench; Yuji Kuwahara; Hiromune Yokoki; Hajime Kayanne
Chemosphere, Jan. 2014, [Reviewed] - Anthropogenic impacts on water quality of the lagoonal coast of Fongafale Islet, Funafuti Atoll, Tuvalu
Masafumi Fujita; Jumpei Suzuki; Daisaku Sato; Yuji Kuwahara; Hiromune Yokoki; Hajime Kayanne
Sustainability Science, Mar. 2013, [Reviewed] - Diagnosis of the ageing of water pipe systems by water quality and structure of iron corrosion in supplied water
Yoshiyuki Ishiwatari; Iori Mishima; Norihiko Utsuno; Masafumi Fujita
Water Science and Technology: Water Supply, Feb. 2013, [Reviewed] - Proposal of the selection method of a priority region for land protection on Majuro Atoll, Marshall Islands (in Japanese)
Yuki Eda; Yuji Kuwahara; Daisaku Sato; Masafumi Fujita; Hiromune Yokoki
Journal of Coastal Zone Studies, Dec. 2012, [Reviewed] - Run-off mechanism of domestic wastewater into lagoon-side coast on Funafuti Atoll, Tuvalu (in Japanese)
Masafumi Fujita; Ryutaro Inoue; Daisaku Sato; Yuji Kuwahara; Hiromune Yokoki
Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research), Sep. 2012, [Reviewed] - Water pollution in lagoon-side coast on Funafuti Atoll, Tuvalu (in Japanese)
Masafumi Fujita; Daisaku Sato; Yuji Kuwahara; Hiromune Yokoki
Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research), Sep. 2011, [Reviewed] - Improving the accuracy of the geographic information components for selection of the priority district of protection measure on the South Pacific islands (in Japanese)
Yuji Kuwahara; Takatoshi Nakano; Yuki Eda; Hiromune Yokoki; Masafumi Fujita; Daisaku Sato
Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research), Sep. 2011, [Reviewed] - Evaluation of the characteristics of microorganisms that contribute to denitrification in the paddy drainage treatment apparatus by quinone composition measurement
Koji Hamada; Asa Miura; Masafumi Fujita; Tadayoshi Hitomi; Tomijiro Kubota; Eisaku Shiratani
Journal of Water and Environment Technology, Dec. 2010, [Reviewed] - Sediment oxygen consumption and microbial community structure in Tokyo Bay (in Japanese)
Masanori Endo; Yukio Koibuchi; Masafumi Fujita; Jumpei Suzuki; Hisako Ogura; Akira Iimura; Satoshi Ohata; Masahiko Isobe
Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering), Nov. 2010, [Reviewed] - Development of Ecosystem Model for Brackish Lakes Considering Dynamics of Suspended Bacteria (in Japanese)
Yumiko Oyama; Masafumi Fujita; Hisamichi Nobuoka; Nobuo Mimura
Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering), Nov. 2010, [Reviewed] - Evaluation of aquifer salinization in the atoll islands by using electrical resistivity
Satoshi Nakada; Hiroya Yamano; Yu Umezawa; Masafumi Fujita; Masao Watanabe; Makoto Taniguchi
Journal of The Remote Sensing Society of Japan, Nov. 2010, [Reviewed] - Temporal variation in maximum cell-specific nitrification rate
Masafumi Fujita; Koji Tsuji; Akira Akashi
Water Science and Technology, Apr. 2010, [Reviewed] - Acetate uptake efficiency of polyphosphate-accumulating organisms under exposure to surfactants
Koji Tsuji; Masafumi Fujita; Hiroaki Furumai
Water Science and Technology, Dec. 2009, [Reviewed] - Behaviour and characteristics of suspended solids in Hinuma Lake (in Japanese)
Yumiko Oyama; Masafumi Fujita; Hisamichi Nobuoka; Nobuo Mimura
Journal of Japan Society of Civil Engineers, Ser. B2, Coastal Engineering, Nov. 2009, [Reviewed] - Rapid increase in acetate uptake rate of glycogen-accumulating organisms under shift in enhanced biological phosphate removal activity (in Japanese)
Koji Tsuji; Kaoru Yamada; Masafumi Fujita
Journal of Japan Society on Water Environment, Apr. 2009, [Reviewed] - Real-time PCR analysis of Candidatus ‘Accumulibacter phosphatis’ in A/O activated sludge enhancing phosphate release activity (in Japanese)
Koji Tsuji; Masafumi Fujita; Akira Akashi; Toshikazu Fukushima; Hiroaki Furumai
Journal of Japan Society on Water Environment, Feb. 2009, [Reviewed] - Anaerobic organic matter uptake by phosphate-accumulating organisms in activated sludge treating municipal wastewater supplemented with laundry detergent (in Japanese)
Koji Tsuji; Masafumi Fujita; Hiroaki Furumai; Yasushi Sakamoto
Journal of Japan Society on Water Environment, Dec. 2008, [Reviewed] - Response of maximum cell-specific nitrite oxidation rate to hysteresis of nitrite oxidation by nitrite-oxidizing bacteria (in Japanese)
Koji Tsuji; Masafumi Fujita; Tetsuo Yamashita; Takashi Mino; Akira Akashi
Journal of Japan Society on Water Environment, Nov. 2008, [Reviewed] - Dynamic behavior of a quinone biomarker in leachate from a final landfill site for municipal solid waste (in Japanese)
Masafumi Fujita; Kentaro Imai; Koji Tsuji; Yasushi Sakamoto
Journal of the Japan Society of Waste Management Experts, Sep. 2008, [Reviewed] - Microbial response to benthic environment in trench and flat seabed sediments in Tokyo Bay, Japan
Masafumi Fujita; Yukio Koibuchi; Udin Hasanudin; Koichi Fujie
Journal of Coastal Research, Jan. 2008, [Reviewed] - Temporal variation in maximum cell-specific nitrification rates in municipal wastewater treatment plant and controlling factors (in Japanese)
Masafumi Fujita; Koji Tsuji; Naohiro Takeda; Mie Minakawa; Mariko Nakamura; Takashi Mino; Akira Akashi
Journal of Japan Society on Water Environment, Dec. 2007, [Reviewed] - Usability of quinone biomarker as a stability index of final landfill sites for municipal solid waste (in Japanese)
Masafumi Fujita; Kentaro Imai; Koji Tsuji; Yasushi Sakamoto
Environmental Engineering Research, Nov. 2007, [Reviewed] - Diurnal behavior of LAS in domestic wastewater from residential district on fine-weather day (in Japanese)
Koji Tsuji; Masafumi Fujita; Weonjae Kim; Satoshi Managaki; Fumiyuki Nakajima; Hiroaki Furumai
Journal of Japan Society on Water Environment, Oct. 2007, [Reviewed] - Contributions of surface soil waters to changes in nitrate and dissolved organic carbon concentration in riparian wetland streams (in Japanese)
Hirokazu Haga; Kei Nishida; Masafumi Fujita; Yasushi Sakamoto
Journal of Japan Society on Water Environment, Apr. 2007, [Reviewed] - Calibration of ASM3 with enhanced biological phosphate removal module using response batch experiments (in Japanese)
Masafumi Fujita; Koji Tsuji; Masumi Wada; Hiroaki Furumai
Journal of Water and Waste, Mar. 2007, [Reviewed] - Environmental factors affecting nitrifier inhabitation in a riverhead area (in Japanese)
Masafumi Fujita; Hiromi Yoshino; Hirokazu Haga; Kei Nishida; Yasushi Sakamoto
Proceedings of Hydraulic Engineering, Mar. 2007, [Reviewed] - Uptake of organic matter by EBPR activated sludge under exposure of surfactant in anaerobic condition (in Japanese)
Koji Tsuji; Masafumi Fujita; Hiroaki Furumai
Environmental Engineering Research, Nov. 2006, [Reviewed] - Application of a quinone biomarker for the analysis of hillslope runoff
Masafumi Fujita; Hirokazu Haga; Kei Nishida; Yasushi Sakamoto
Journal of Hydroscience and Hydraulic Engineering, Nov. 2006, [Reviewed], [Invited] - Control of refractory pollutants as useful resources by hydrothermal reaction coupled with biological treatment methods
Kyoungrean Kim; Masafumi Fujita; Hiroyuki Daimon; Koichi Fujie
Water Practice and Technology, Sep. 2006, [Reviewed] - Analysis of streamflow-generating mechanisms based on rainfall-runoff responses at a hillslope (in Japanese)
Hirokazu Haga; Kei Nishida; Masafumi Fujita; Yasushi Sakamoto
Proceedings of Hydraulic Engineering, Mar. 2006, [Reviewed] - Study on unsaturated vertical flow, antecedent precipitation index and discharge of forest slope on the basis of water content of soil (in Japanese)
Yasushi Sakamoto; Hirokazu Haga; Natsuko Igei; Masafumi Fujita; Kei Nishida
Proceedings of Hydraulic Engineering, Mar. 2006, [Reviewed] - Biological phosphate removal using a degradable carbon source produced by hydrothermal treatment of excess sludge
Lilian H. Haraguchi; Masafumi Fujita; Hiroyuki Daimon; Koichi Fujie; Mohamed R. Sadeg
Brazilian Journal of Chemical Engineering, Mar. 2006, [Reviewed] - Evaluation of hydrological processes in a mountainous small basin using a quinone biomarker
Masafumi Fujita; Hirokazu Haga; Kei Nishida; Yasushi Sakamoto
Water Science and Technology, Jan. 2006, [Reviewed] - Flow paths, rainfall properties, and antecedent soil moisture controlling lags to peak discharge in a granitic unchanneled catchment
Hirokazu Haga; Yoshitaka Matsumoto; Jun Matsutani; Masafumi Fujita; Kei Nishida; Yasushi Sakamoto
Water Resources Research, Dec. 2005, [Reviewed] - Dynamic changes in environment condition and microbial community structure in trench and flat seabed sediments of Tokyo Bay, Japan
Udin Hasanudin; Masafumi Fujita; Yukio Koibuchi; Koichi Fujie
Water Science and Technology, Nov. 2005, [Reviewed] - Effect of physical environment on microbial community structure in the head of Ariake Bay (in Japanese)
Yukio Koibuchi; Masafumi Fujita; Tetsuya Abe; Masahiko Isobe
Proceedings of Coastal Engineering, Oct. 2005, [Reviewed] - Enhancement of bio-P removal using excess sludge treated by hydrothermal reaction (in Japanese)
Masafumi Fujita; Kyoungrean Kim; Hiroyuki Daimon; Koichi Fujie
Journal of Japan Sewage Works Association, Oct. 2005, [Reviewed] - Dynamic analysis of quinone biomarker on hillslope runoff processes (in Japanese)
Masafumi Fujita; Hirokazu Haga; Kei Nishida; Yasushi Sakamoto
Proceedings of Hydraulic Engineering, Mar. 2005, [Reviewed] - River environment evaluation using multivariate analysis with integrated water quality and river flow type indices based on fish data (in Japanese)
Takayuki Hayakawa; Masafumi Fujita; Hirokazu Haga; Yasushi Sakamoto
Proceedings of Hydraulic Engineering, Mar. 2005, [Reviewed] - Temporal change and spatial distribution of water content and infiltration rate of surface unsaturated soil surrounding a single tree (in Japanese)
Yasushi Sakamoto; Yoshihisa Sanjo; Hirokazu Haga; Masafumi Fujita
Proceedings of Hydraulic Engineering, Mar. 2005, [Reviewed] - Application of hydrothermal reaction for excess sludge reuse as carbon sources in biological phosphorus removal
Kyoungrean Kim; Masafumi Fujita; Hiroyuki Daimon; Koichi Fujie
Water Science and Technology, 2005, [Reviewed] - Dynamic analysis of microbial community structure and identification of refractory chemical-decomposing bacteria by combination of quinone-profiling method and PCR-DGGE technique (in Japanese)
Tadao Kunihiro; Masafumi Fujita; Hong-ying Hu; Koichi Fujie
Proceedings of the Institute of Statistical Mathematics, Dec. 2004, [Reviewed] - Field experiment of improving oxygen deficient water by micro bubble aeration system (in Japanese)
Yukio Koibuchi; Masahiko Isobe; Jun Sasaki; Masafumi Fujita; Michio Gomyo; Akio Kurihara; Masashi Tanaka; Mohammad Islam; Toshiyuki Suzuki
Proceedings of Coastal Engineering, Oct. 2004, [Reviewed] - Biodegradability improvement and structural conversion of polyvinyl alcohol (PVA) by sub- and supercritical water reaction
Kyoungrean Kim; Masafumi Fujita; Hiroyuki Daimon; Koichi Fujie
Journal of Chemical Engineering of Japan, Sep. 2004, [Reviewed] - The effect of clams (Tapes philippinarum) on changes in microbial community structure in tidal flat sediment mesocosms, based on quinone profiles
Udin Hasanudin; Masafumi Fujita; Tadao Kunihiro; Koichi Fujie; Teruaki Suzuki
Ecological Engineering, May 2004, [Reviewed] - Change of monochloroacetic acid to biodegradable organic acids by hydrothermal reaction
Kyoungrean Kim; Masafumi Fujita; Hiroyuki Daimon; Koichi Fujie
Journal of Hazardous Materials, Apr. 2004, [Reviewed] - Quinone profile analysis of activated sludge during start-up phase in anaerobic/oxic sequencing batch reactor (in Japanese)
Masafumi Fujita; Hiroaki Furumai; Fumiyuki Nakajima
Journal of Japan Society on Water Environment, Mar. 2004, [Reviewed] - Application of quinone biomarker to the analysis of hillslope runoff (in Japanese)
Masafumi Fujita; Hirokazu Haga; Yoshitaka Matsumoto; Yasushi Sakamoto; Kei Nishida; Jun Matsutani
Proceedings of Hydraulic Engineering, Mar. 2004, [Reviewed] - Recovery of natural fibers from pineapple leaves by steam explosion
Muhammad Faisal; Masafumi Fujita; Armando T. Quitain; Hiroyuki Daimon; Koichi Fujie
Jurnal Rekayasa Kimia dan Lingkungan, 2004, [Reviewed] - Biodegradability improvement of wastewater containing vegetable proteins by hydrothermal treatment
Masafumi Fujita; Kyoungrean Kim; Hiroyuki Daimon; Koichi Fujie
Kagaku Kogaku Ronbunshu, Jan. 2004, [Reviewed] - The contribution of clams on tidal flat purification capacity
Udin Hasanudin; Tadao Kunihiro; Masafumi Fujita; Hong-Ying Hu; Koichi Fujie; Teruaki Suzuki
Journal of Water and Environment Technology, 2004, [Reviewed] - Evaluation of the usability of excess sludge treated by hydrothermal reaction as carbon sources for enhanced biological phosphate removal (in Japanese)
Masafumi Fujita; Kyoungrean Kim; Hiroyuki Daimon; Koichi Fujie
Environmental Engineering Research, Nov. 2003, [Reviewed] - Analysis of relationship between water quality and sediment microbial community in Tokyo Bay (in Japanese)
Masafumi Fujita; Yukio Koibuchi; Udin Hasanudin; Hisako Ogura; Koichi Fujie; Masahiko Isobe
Proceedings of Coastal Engineering, Oct. 2003, [Reviewed] - Application of hydrothermal reaction to biodegradability improvement of refractory pollutants: Structural conversion of di- and trichloroacetic acid to biodegradable products
Kyoungrean Kim; Masafumi Fujita; Hiroyuki Daimon; Koichi Fujie
Journal of Water and Environment Technology, 2003, [Reviewed] - Quinone profile analysis of fractionated EBPR activated sludge treating municipal wastewater by centrifugation in sucrose solution (in Japanese)
Masafumi Fujita; Hiroaki Furumai; Fumiyuki Nakajima
Journal of Japan Society on Water Environment, Dec. 2002, [Reviewed] - Fractionation of organic compounds in domestic wastewater based on settleability and their characterization by oxygen uptake rate (OUR), nitrate uptake rate (NUR) and phosphorus release rate (PRR) of activated sludge (in Japanese)
Petch Pengchai; Hiroaki Furumai; Fumiyuki Nakajima; Masafumi Fujita
Journal of Japan Sewage Works Association, Jul. 2001, [Reviewed] - Modeling effect of remaining nitrate on phosphorus removal in SBR
Absar A. Kazmi; Masafumi Fujita; Hiroaki Furumai
Water Science and Technology, Feb. 2001, [Reviewed] - Model analysis for biological phosphorus removal in SBR activated sludge process: Effects of organic substrate composition and remaining nitrate at mixing phase (in Japanese)
Masafumi Fujita; Hiroaki Furumai; Fumiyuki Nakajima
Environmental Engineering Research, Nov. 1999, [Reviewed] - Modeling long term nutrient removal in a sequencing batch reactor
Hiroaki Furumai; Absar A. Kazmi; Masafumi Fujita; Yuji Furuya; Kosei Sasaki
Water Research, Aug. 1999, [Reviewed]
Books and other publications
- 日本インフラの体力診断
土木学会インフラ体力診断小委員会, Contributor
丸善出版, Apr. 2025
9784810611250 - Elsevier Reference Collection in Life Sciences
Shumona Akther; Takashi Kitano; Masafumi Fujita, Contributor
Elsevier, Sep. 2023 - 自然災害からのサバイブ
酒井宗寿; 平山太市; 若月泰孝; 藤田昌史; 小林薫; 武田茂樹; 桑原祐史; 伊藤哲司; 齋藤芳徳; 熊澤貴之; 田中耕市, Joint work
ゆたり出版, Aug. 2023
9784990993825 - 日本インフラの体力診断 Vol.2（地域公共交通・都市鉄道・下水道）
土木学会インフラ体力診断小委員会, Contributor
土木学会, Jul. 2022 - バイオエネルギー再燃
新田見匡; 藤田昌史; 田中孝国, Contributor
シーエムシー出版, Nov. 2021
9784781316215 - 水再生利用学－持続可能社会を支える水マネジメント，第25章 水再生・水再利用のための計画
古米弘明; 春日郁朗; 栗栖太; 藤田昌史, Joint translation
技報堂出版, Nov. 2010
9784765534451 - 活性汚泥モデル－ASM1，ASM2，ASM2D，ASM3－
味埜俊; 糸川浩紀; 大石亮; 小原卓巳; 後藤雅子; 庄司仁; 藤田昌史, Joint translation
環境新聞社, Jan. 2005
4860180690 - Advances in Water and Wastewater Treatment Technology
Furumai H; Fujita M; Nakajima F, Contributor
Elsevier, Sep. 2001
0444505636
Affiliated academic society
Industrial Property Rights
- 特許5999598号, 特開2014-91099, 特願2012-244045, 海水を利用した下排水処理方法
藤田昌史, 横木裕宗, 桑原祐史, 佐藤大作 - 特許5255818号, 特開2009-112924, 特願2007-287694, シミュレーション方法
山下哲生, 竹田尚弘, 皆川美絵, 竹崎潤, 藤田昌史, 辻幸志, 赤司昭 - 特許5049748号, 特開2008-142704, 特願2007-294618, 生物学的水処理のシミュレーション方法およびシミュレーション装置
中村摩理子, 竹田尚弘, 山下哲生, 赤司昭, 藤田昌史, 辻幸志 - 特許4278701号, 特願2008-160929, シミュレーション方法，シミュレーション装置，生物処理方法，ならびに，生物処理装置
山下哲生,竹田尚弘,皆川美絵,竹崎潤, 藤田昌史,辻幸志,赤司昭
