Publications

Selected Publications (Recent Highlights)

Selected publications are listed below.

• Zhao, G., Furumai, H., Fujita, M.: Parallel hybrid ordinary differential equation for modeling biological phosphorus removal modified for enhanced predictive performance and physical interpretability, Journal of Environmental Management, 380, 124932, 2025.
• Saputra, H. K., Miura, N., Pokhrel, P., Zhao, G., Fujita, M.: Comprehensive assessment of multiple biomarker mechanisms in the brackish water clam Corbicula japonica exposed to polystyrene microplastics using structural equation modeling, Science of the Total Environment, 949, 175089, 2024.
• Zhao, G., Furumai, H., Fujita, M.: Supporting data–enhanced hybrid ordinary differential equation model for phosphate dynamics in municipal wastewater treatment, Bioresource Technology, 409, 131217, 2024.
• Zhao, G., Ohsu, K., Saputra, H. K., Okada, T., Suzuki, J., Kuwahara, Y., Fujita, M.: Enhancing interpretability of tree-based models for downstream salinity prediction: Decomposing feature importance using the Shapley additive explanation approach, Results in Engineering, 23, 102373, 2024.
• Akther, S., Sun, W., Suzuki, J., Fujita, M.: Tolerance of benthic foraminifer Calcarina gaudichaudii to polycyclic aromatic hydrocarbon pyrene: Effects on photosynthesis, Coral Reefs, 41, 1585–1594, 2022.
• Pokhrel, P., Mashiko, S., Akther, S., Suzuki, J., Fujita, M.: Antioxidant capacity and carbon-based scope for growth of brackish water clams Corbicula japonica under the combined effects of natural and anthropogenic factors, Environmental Pollution, 308, 119676, 2022.
• Deng, J., Zhao, G., Wang, F., Fujita, M.: A simulation of acetate consumption and electricity generation in a single microbial fuel cell considering the diversity of nonelectrogenic bacteria, Bioprocess and Biosystems Engineering, 45, 1857–1864, 2022.
• Akther, S., Suzuki, J., Pokhrel, P., Okada, T., Imamura, M., Enomoto, T., Kuwahara, Y., Fujita, M.: Assessment of heavy metal pollution in the coastal sediments of an urbanized atoll in the central Pacific: Majuro Atoll, the Marshall Islands, Environmental Monitoring and Assessment, 193, 843, 2021.
• Pokhrel, P., Suzuki, J., Akther, S., Fujita, M.: Physiological and biochemical responses of brackish-water clam Corbicula japonica under global-warming conditions: Water temperature, salinity, and food availability, Ecological Indicators, 129, 107866, 2021.
• Akther, S., Suzuki, J., Pokhrel, P., Okada, T., Imamura, M., Enomoto, T., Kitano, T., Kuwahara, Y., Fujita, M.: Behavior of eukaryotic symbionts in large benthic foraminifers Calcarina gaudichaudii and Baculogypsina sphaerulata under exposure to wastewater, Environmental Pollution, 265, 114971, 2020.

Full Publication List

The complete list of publications is provided below in chronological order. Articles in Japanese are indicated as (in Japanese).

• Hososhima Y., Zhao, G., Fujita, M.: Real-time estimation of nitrifying bacteria concentration by using ammonia sensors installed in circulating nitrification and denitrification process, Japanese Journal of JSCE, 81(25), 25-25004, 2026 (in Japanese).
• Sato, S., Fujita, M.: Estimation of saltwater intrusion in the downstream of urban river using long short-term memory, Japanese Journal of JSCE, 81(25), 25-25053, 2026 (in Japanese).
• Hayakawa, K., Fujita, M.: Responses of antioxidant markers and valve activity of the brackish water clam Corbicula japonica under single/combined exposures of polystyrene microplastics and thermal stress, Japanese Journal of JSCE, 81(17), 25-17163, 2025 (in Japanese).
• Sugawara, T., Fujita, M.: Effects of granulated coal ash used for sediment improvement on the brackish water clam Corbicula japonica, Japanese Journal of JSCE, 81(17), 25-17261, 2025 (in Japanese).
• Zhao, G., Furumai, H., Fujita, M.: Parallel hybrid ordinary differential equation for modeling biological phosphorus removal modified for enhanced predictive performance and physical interpretability, Journal of Environmental Management, 2025.
• Saputra, H. K., Miura, N., Pokhrel, P., Zhao, G., Fujita, M.: Comprehensive assessment of multiple biomarker mechanisms in the brackish water clam Corbicula japonica exposed to polystyrene microplastics using structural equation modeling, Science of the Total Environment, 949, 175089, 2024.
• Zhao, G., Furumai, H., Fujita, M.: Supporting data–enhanced hybrid ordinary differential equation model for phosphate dynamics in municipal wastewater treatment, Bioresource Technology, 409, 131217, 2024.
• Zhao, G., Ohsu, K., Saputra, H. K., Okada, T., Suzuki, J., Kuwahara, Y., Fujita, M.: Enhancing interpretability of tree-based models for downstream salinity prediction: Decomposing feature importance using the Shapley additive explanation approach, Results in Engineering, 23, 102373, 2024.
• Deng, J., Wang, F., Zhao, G., Fujita, M.: Antioxidant activity of conventional activated sludge in a municipal wastewater treatment plant, Journal of Water and Environment Technology, 22(1), 53-60, 2024.
• Pokhrel, P., Suzuki, J., Fujita, M.: Integrated biomarker responses of a brackish water clam to global warming conditions, Journal of Water and Environment Technology, 20(6), 238-247, 2022.
• Zhao, G., Suzuki, S., Deng, J., Fujita, M.: Machine learning estimation of biodegradable organic matter concentrations in municipal wastewater, Journal of Environmental Management, 323, 116191, 2022.
• Akther, S., Sun, W., Suzuki, J., Fujita, M.: Tolerance of benthic foraminifer Calcarina gaudichaudii to polycyclic aromatic hydrocarbon pyrene: Effects on photosynthesis, Coral Reefs, 41, 1585-1594, 2022.
• Miura, N., Deng, J., Wu, Q., Suzuki, J., Fujita, M.: Effects of sediment composition on valve opening-closing responses of brackish water clam Corbicula japonica, Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering), 78(2), I_781-I_786, 2022 (in Japanese).
• Pokhrel, P., Mashiko, S., Akther, S., Suzuki, J., Fujita, M.: Antioxidant capacity and carbon-based scope for growth of brackish water clams Corbicula japonica under the combined effects of natural and anthropogenic factors, Environmental Pollution, 308, 119676, 2022.
• Deng, J., Zhao, G., Wang, F., Fujita, M.: A simulation of acetate consumption and electricity generation in a single microbial fuel cell considering the diversity of nonelectrogenic bacteria, Bioprocess and Biosystems Engineering, 45, 1857-1864, 2022.
• Akther, S., Suzuki, J., Pokhrel, P., Okada, T., Imamura, M., Enomoto, T., Kuwahara, Y., Fujita, M.: Assessment of heavy metal pollution in the coastal sediments of an urbanized atoll in the central Pacific: Majuro Atoll, the Marshall Islands, Environmental Monitoring and Assessment, 193, 843, 2021.
• Pokhrel, P., Suzuki, J., Akther, S., Fujita, M.: Physiological and biochemical responses of brackish-water clam Corbicula japonica under global-warming conditions: Water temperature, salinity, and food availability, Ecological Indicators, 129, 107866, 2021.
• Fujita, M., Kuwahara, Y., Kobarashi, K., Masuzawa, T.: Evaluation of downsizing and sustainability of water distribution network in a middle sized-city, Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research), 77(5), I_325-I_330, 2021 (in Japanese).
• Miura, N., Li, L., Sun, W., Akther, S., Fujita, M.: Effects of water pollution due to wastewater on photosynthetic activity and oxidative stress of large benthic foraminifera, Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research), 77(5), I_133-I_138, 2021 (in Japanese).
• Pokhrel, P., Machida, H., Akther, S., Suzuki, J., Fujita, M.: Antioxidant responses of a brackish water clam to sediment composition and water quality: A field experiment, Journal of Water and Environment Technology, 19(4), 240-250, 2021.
• Akther, S., Sun, W., Pokhrel, P., Suzuki, J., Fujita, M.: An assessment of photosynthetic activity in large benthic foraminifers and the optimization of light intensity for lab-scale cultivation, Journal of Water and Environment Technology, 19(3), 120-129, 2021.
• Wu, Q., Tsuchiyama, M., Suzuki, J., Fujita, M.: The responses of oxidative stress and scope for growth of Corbicula japonica exposed to wastewater, Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research), 76(7), III_113-III_119, 2020 (in Japanese).
• Akther, S., Suzuki, J., Pokhrel, P., Okada, T., Imamura, M., Enomoto, T., Kitano, T., Kuwahara, Y., Fujita, M.: Behavior of eukaryotic symbionts in large benthic foraminifers Calcarina gaudichaudii and Baculogypsina sphaerulata under exposure to wastewater, Environmental Pollution, 265, 114971, 2020.
• Urasaki, E., Wang, F., Miyafusa, Y., Fujita, M.: Enhancement of power generation in sediment microbial fuel cell for brackish condition, Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering), 76(2), I_991-I_995, 2020 (in Japanese).
• Tsuchiyama, M., Wu, Q., Suzuki, J., Fujita, M.: Investigation of valve opening-closing responses of brackish water clam Corbicula japonica exposed to environmental stress, Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering), 76(2), I_1051-I_1055, 2020 (in Japanese).
• Fujita, M., Bui, T. H., Li, Z., Deng, J., Wang, F., Kuwahara, Y.: Development of wastewater treatment technology with power generation in sewer pipeline for an application to the Pacific atoll nations, Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research), 76(5), I_353-I_359, 2020 (in Japanese).
• Abe, M., Enomoto, T., Suzuki, J., Fujita, M., Kuwahara, Y.: Investigation of foraminifera habitat using UAV-image at Eneko Island in the Majuro Atoll, Marshall Islands, Journal of Coastal Zone Studies, 32(4), 61-65, 2020 (in Japanese).
• Suzuki, J., Nakano, D., Imamura, M., Yamamoto, R., Fujita, M.: Assessing a polluted river environment by oxidative stress biomarker responses in caddisfly larvae, Science of the Total Environment, 696, 134005, 2019.
• Wu, Q., Tsuchiyama, M., Suzuki, J., Fujita, M.: Effects of components of municipal wastewater on scope for growth based on carbon mass balance in Corbicula japonica, Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering), 75(2), I_1135-I_1139, 2019 (in Japanese).
• Wang, F., Matsubara, H., Nittami, T., Fujita, M.: Utilization of a silicone rubber membrane for passive oxygen supply in a microbial fuel cell treating carbon and nitrogen from synthetic coke-oven wastewater, Applied Biochemistry and Biotechnology, 189(1), 217-232, 2019.
• Hanawa, S., Fujita, M., Kuwahara, Y.: 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, Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research), 75(5), I_297-I_306, 2019 (in Japanese).
• Suzuki, J., Imamura, M., Fujita, M.: Oxidative stress response of caddisfly Stenopsyche marmorata larvae to abrupt hypoxia–normoxia shift, Aquatic Toxicology, 211, 66-72, 2019.
• Pokhrel, P., Akashi, J., Suzuki, J., Fujita, M.: Oxidative stress responses to feeding activity and salinity level in brackish water clam Corbicula japonica, Science of the Total Environment, 665, 191-195, 2019.
• Wang, F., Fujita, M.: Effects of anion surfactant on acetate removal and power generation in air-cathode microbial fuel cell, Journal of Water and Waste, 2019 (in Japanese).
• Suzuki, J., Nakano, D., Imamura, M., Fujita, M.: Change in oxidative stress biomarkers in stream caddisfly, Hydropsyche spp., larvae depending on size and season, Journal of Japan Society on Water Environment, 42(1), 1-8, 2019 (in Japanese).
• Pokhrel, P., Ohgushi, K., Fujita, M.: Impacts of future climate variability on hydrological processes in the upstream catchment of Kase River basin, Japan, Applied Water Science, 9, 17, 2019.
• Tsuchiyama, M., Suzuki, J., Fujita, M.: Effects of water quality during hypoxic water mass formation on antioxidative capacity of Corbicula japonica in a brackish lake, Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering), 74(2), I_1255-I_1260, 2018 (in Japanese).
• Mashiko, S., Suzuki, J., Fujita, M.: Establishment of a growth evaluation method based on carbon budget for brackish water clam Corbicula japonica, Journal of Japan Society on Water Environment, 41(5), 123-128, 2018 (in Japanese).
• Suzuki, J., Imamura, M., Nakano, D., Yamamoto, R., Fujita, M.: Effects of water turbidity and different temperatures on oxidative stress in caddisfly (Stenopsyche marmorata) larvae, Science of the Total Environment, 630, 1078-1085, 2018.
• Ikeda, Y., Machida, H., Suzuki, J., Fujita, M.: Total antioxidant responses in whole soft tissues and gills of brackish water bivalve Corbicula japonica exposed to municipal wastewater, Journal of Japan Society on Water Environment, 40(6), 255-260, 2017 (in Japanese).
• Ikeda, Y., Suzuki, J., Fujita, M.: Effects of water pollution in brackish lake on total antioxidant capacity of Corbicula japonica, Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering), 73(2), I_1219-I_1224, 2017 (in Japanese).
• Nittami, T., Mukai, M., Uematsu, K., Wan Yoon, L., Schroeder, S., Seak May Chua, A., Fukuda, J., Fujita, M., Seviour, R. J.: Effects of different carbon sources on enhanced biological phosphorus removal and “Candidatus Accumulibacter” community composition under continuous aerobic condition, Applied Microbiology and Biotechnology, 101, 8607-8619, 2017.
• Matsubara, H., Wang, F., Fujita, M.: Nitrification technique by passive oxygen supply with gas-permeable membrane: Examination of coke-oven wastewater treatment by two-chamber microbial fuel cell, Journal of Water and Waste, 59(6), 453-459, 2017 (in Japanese).
• Ikeda, Y., Akashi, J., Machida, H., Suzuki, J., Fujita, M.: Oxidative stress responses of Corbicula japonica to environmental factors in brackish lakes, Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering), 72(2), I_1351-I_1356, 2016 (in Japanese).
• Endo, M., Koibuchi, Y., Fujita, M., Iimura, A.: Effects of microbial community structure on sediment oxygen consumption with anoxic water in Tokyo Bay, Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering), 72(2), I_1297-I_1302, 2016 (in Japanese).
• Asahara, D., Eguchi, M., Sato, D., Fujita, M., Yokoki, H.: Water quality conservation measure by pollutant removal in the lagoon of Funafuti Atoll, Tuvalu, Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research), 72(5), I_173-I_178, 2016 (in Japanese).
• Mishima, I., Ishiwatari, Y., Kato, T., Fujita, M.: Analysis of the chemical form of iron in water pipes using XAFS measurements, Water Science and Technology: Water Supply, 16(4), 1094-1101, 2016.
• Ishiwatari, Y., Kato, T., Mishima, I., Fujita, M.: Investigation of underwater camera images and suspended solid composition in lined water pipes and polyvinyl chloride pipes, Journal of Japan Society on Water Environment, 39(2), 43-50, 2016 (in Japanese).
• Ishiwatari, Y., Kato, T., Fujita, M.: Characteristics of suspended solids and presence of bacteria observed in mortar lined pipes in a water distribution system, Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research), 71(7), III_421-III_425, 2015 (in Japanese).
• Wang, F., Ishiwatari, Y., Fujita, M.: Assessment of heavy metal contamination of coastal sediments in Tuvalu and investigation of their removal method using an existing septic tank system, Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research), 70(7), III_509-III_515, 2014 (in Japanese).
• Akashi, J., Ishiwatari, Y., Fujita, M.: Behavior of particulate elements and bacteria in a water distribution system, Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research), 70(7), III_33-III_38, 2014 (in Japanese).
• Mishima, I., Yoshida, Y., Fujita, M.: Analysis of N₂O production potential on nitrification process in full-scale wastewater treatment plants, Journal of Japan Society on Water Environment, 37(6), 219-227, 2014 (in Japanese).
• Ishiwatari, Y., Utsuno, N., Mishima, I., Kato, T., Fujita, M.: Relationship between the lining materials and service ages of water pipes and the elemental composition of suspended solids in running water, Journal of Japan Water Works Association, 83(5), 2-8, 2014 (in Japanese).
• Fujita, M., Ishiwatari, Y., Mishima, I., Utsuno, N., Kato, T.: Effect of ageing of pipe and lining materials on elemental composition of suspended particles in a water distribution system, Water Resources Management, 28, 1645-1653, 2014.
• Fujita, M., Ide, Y., Sato, D., Kench, P. S., Kuwahara, Y., Yokoki, H., Kayanne, H.: Heavy metal contamination of coastal lagoon sediments: Fongafale Islet, Funafuti Atoll, Tuvalu, Chemosphere, 95, 628-634, 2014.
• Fujita, M., Suzuki, J., Sato, D., Kuwahara, Y., Yokoki, H., Kayanne, H.: Anthropogenic impacts on water quality of the lagoonal coast of Fongafale Islet, Funafuti Atoll, Tuvalu, Sustainability Science, 8, 381-390, 2013.
• Ishiwatari, Y., Mishima, I., Utsuno, N., Fujita, M.: Diagnosis of the ageing of water pipe systems by water quality and structure of iron corrosion in supplied water, Water Science and Technology: Water Supply, 13(1), 178-183, 2013.
• Eda, Y., Kuwahara, Y., Sato, D., Fujita, M., Yokoki, H.: Proposal of the selection method of a priority region for land protection on Majuro Atoll, Marshall Islands, Journal of Coastal Zone Studies, 25(3), 53-64, 2012 (in Japanese).
• Fujita, M., Inoue, R., Sato, D., Kuwahara, Y., Yokoki, H.: Run-off mechanism of domestic wastewater into lagoon-side coast on Funafuti Atoll, Tuvalu, Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research), 68(5), I_121-I_125, 2012 (in Japanese).
• Fujita, M., Sato, D., Kuwahara, Y., Yokoki, H.: Water pollution in lagoon-side coast on Funafuti Atoll, Tuvalu, Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research), 67(5), I_205-I_210, 2011 (in Japanese).
• Kuwahara, Y., Nakano, T., Eda, Y., Yokoki, H., Fujita, M., Sato, D.: Improving the accuracy of the geographic information components for selection of the priority district of protection measure on the South Pacific islands, Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research), 67(5), I_239-I_246, 2011 (in Japanese).
• Hamada, K., Miura, A., Fujita, M., Hitomi, T., Kubota, T., Shiratani, E.: Evaluation of the characteristics of microorganisms that contribute to denitrification in the paddy drainage treatment apparatus by quinone composition measurement, Journal of Water and Environment Technology, 8(4), 421-427, 2010.
• Endo, M., Koibuchi, Y., Fujita, M., Suzuki, J., Ogura, H., Iimura, A., Ohata, S., Isobe, M.: Sediment oxygen consumption and microbial community structure in Tokyo Bay, Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering), 66(1), 1036-1040, 2010 (in Japanese).
• Oyama, Y., Fujita, M., Nobuoka, H., Mimura, N.: Development of ecosystem model for brackish lakes considering dynamics of suspended bacteria, Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering), 66(1), 1141-1145, 2010 (in Japanese).
• Nakada, S., Yamano, H., Umezawa, Y., Fujita, M., Watanabe, M., Taniguchi, M.: Evaluation of aquifer salinization in atoll islands by using electrical resistivity method, Journal of The Remote Sensing Society of Japan, 30(5), 317-330, 2010 (in Japanese).
• Fujita, M., Tsuji, K., Akashi, A.: Temporal variation in maximum cell-specific nitrification rate, Water Science and Technology, 61(8), 2069-2073, 2010.
• Tsuji, K., Fujita, M., Furumai, H.: Acetate uptake efficiency of polyphosphate-accumulating organisms under exposure to surfactants, Water Science and Technology, 60(11), 2775-2780, 2009.
• Oyama, Y., Fujita, M., Nobuoka, H., Mimura, N.: Behaviour and characteristics of suspended solids in Hinuma Lake, Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering), 65(1), 1231-1235, 2009 (in Japanese).
• Tsuji, K., Yamada, K., Fujita, M.: Rapid increase in acetate uptake rate of glycogen-accumulating organisms under shift in enhanced biological phosphorus removal activity, Journal of Japan Society on Water Environment, 32(4), 191-196, 2009 (in Japanese).
• Tsuji, K., Fujita, M., Akashi, A., Fukushima, T., Furumai, H.: Real-time PCR analysis of Candidatus Accumulibacter phosphatis in activated sludge during enhancement of phosphorus release activity, Journal of Japan Society on Water Environment, 32(2), 87-91, 2009 (in Japanese).
• Tsuji, K., Fujita, M., Furumai, H., Sakamoto, Y.: Anaerobic organic matter uptake by phosphate-accumulating organisms in activated sludge treating municipal wastewater supplemented with laundry detergent, Journal of Japan Society on Water Environment, 31(12), 755-762, 2008 (in Japanese).
• Tsuji, K., Fujita, M., Yamashita, T., Ajino, S., Akashi, A.: Response of maximum nitrite oxidation rate to nitrogen oxidation history of nitrite-oxidizing bacteria, Journal of Japan Society on Water Environment, 31(11), 693-699, 2008 (in Japanese).
• Fujita, M., Imai, K., Tsuji, K., Sakamoto, Y.: Dynamics of quinone biomarkers in leachate from municipal solid waste landfill, Journal of the Japan Society of Waste Management Experts, 19(5), 347-351, 2008 (in Japanese).
• Fujita, M., Koibuchi, Y., Hasanudin, U., Fujie, K.: Microbial response to benthic environment in trench and flat seabed sediments in Tokyo Bay, Japan, Journal of Coastal Research, 24(1), 146-150, 2008.
• Fujita, M., Tsuji, K., Takeda, N., Minagawa, M., Nakamura, M., Ajino, S., Akashi, A.: Variation in maximum cell-specific nitrification rate in municipal wastewater treatment plants and its influencing factors, Journal of Japan Society on Water Environment, 30(12), 723-729, 2007 (in Japanese).
• Fujita, M., Imai, K., Tsuji, K., Sakamoto, Y.: Applicability of quinone biomarkers as an indicator for stabilization of municipal solid waste landfill, Journal of Environmental Engineering Research, 44, 499-504, 2007 (in Japanese).
• Tsuji, K., Fujita, M., Kim, W., Managaki, S., Nakajima, N., Furumai, H.: Behavior of linear alkylbenzene sulfonate (LAS) in domestic wastewater discharged from residential area on a sunny day, Journal of Japan Society on Water Environment, 30(10), 579-583, 2007 (in Japanese).
• Haga, H., Nishida, T., Fujita, M., Sakamoto, Y.: Contribution of surface soil water to variations in nitrate nitrogen and dissolved organic carbon concentrations in riparian wetland surface water, Journal of Japan Society on Water Environment, 30(4), 213-218, 2007 (in Japanese).
• Fujita, M., Tsuji, K., Wada, M., Furumai, H.: Calibration of ASM3 incorporating biological phosphorus removal process using disturbance response experiments, Journal of Water and Waste, 49(3), 50-58-230, 2007 (in Japanese).
• Fujita, M., Yoshino, H., Haga, H., Nishida, K., Sakamoto, Y.: Environmental factors affecting nitrifier inhabitation in a riverhead area, Proceedings of Hydraulic Engineering, 51, 1201-1205, 2007 (in Japanese).
• Tsuji, K., Fujita, M., Furumai, H.: Uptake of organic matter by EBPR activated sludge under exposure of surfactant in anaerobic condition, Environmental Engineering Research, 43, 333-342, 2006 (in Japanese).
• Fujita, M., Haga, H., Nishida, K., Sakamoto, Y.: Application of a quinone biomarker for the analysis of hillslope runoff, Journal of Hydroscience and Hydraulic Engineering, 24(2), 15-23, 2006.
• Kim, K., Fujita, M., Daimon, H., Fujie, K.: Control of refractory pollutants as useful resources by hydrothermal reaction coupled with biological treatment methods, Water Practice and Technology, 1(3), wpt2006063, 2006.
• Haga, H., Nishida, K., Fujita, M., Sakamoto, Y.: Analysis of streamflow-generating mechanisms based on rainfall–runoff responses at a hillslope, Proceedings of Hydraulic Engineering, 50, 331-336, 2006 (in Japanese).
• Sakamoto, Y., Haga, H., Igei, N., Fujita, M., Nishida, K.: Study on unsaturated vertical flow, antecedent precipitation index and discharge of forest slope on the basis of soil water content, Proceedings of Hydraulic Engineering, 50, 247-252, 2006 (in Japanese).
• Haraguchi, L. H., Fujita, M., Daimon, H., Fujie, K., Mohamed, R. S.: Biological phosphate removal using a degradable carbon source produced by hydrothermal treatment of excess sludge, Brazilian Journal of Chemical Engineering, 23(1), 29-35, 2006.
• Fujita, M., Haga, H., Nishida, K., Sakamoto, Y.: Evaluation of hydrological processes in a mountainous small basin using a quinone biomarker, Water Science and Technology, 53(2), 93-99, 2006.
• Haga, H., Matsumoto, Y., Matsutani, J., Fujita, M., Nishida, K., Sakamoto, Y.: Flow paths, rainfall properties, and antecedent soil moisture controlling lags to peak discharge in a granitic unchanneled catchment, Water Resources Research, 41(12), W12410, 2005.
• Hasanudin, U., Fujita, M., Koibuchi, Y., Fujie, K.: Dynamic changes in environment condition and microbial community structure in trench and flat seabed sediments of Tokyo Bay, Japan, Water Science and Technology, 52(9), 107-114, 2005.
• Koibuchi, Y., Fujita, M., Abe, T., Isobe, M.: Effect of physical environment on microbial community structure in the head of Ariake Bay, Proceedings of Coastal Engineering, 52, 946-950, 2005 (in Japanese).
• Fujita, M., Kim, K., Daimon, H., Fujie, K.: Enhancement of biological phosphorus removal using excess sludge treated by hydrothermal reaction, Journal of Japan Sewage Works Association, 42(516), 117-125, 2005 (in Japanese).
• Fujita, M., Haga, H., Nishida, K., Sakamoto, Y.: Dynamic analysis of quinone biomarker on hillslope runoff processes, Proceedings of Hydraulic Engineering, 49, 121-126, 2005 (in Japanese).
• Hayakawa, T., Fujita, M., Haga, H., Sakamoto, Y.: River environment evaluation using multivariate analysis with integrated water quality and river flow type indices based on fish data, Proceedings of Hydraulic Engineering, 49, 1531-1536, 2005 (in Japanese).
• Sakamoto, Y., Sanjo, Y., Haga, H., Fujita, M.: Temporal change and spatial distribution of water content and infiltration rate of surface unsaturated soil surrounding a single tree, Proceedings of Hydraulic Engineering, 49, 61-66, 2005 (in Japanese).
• Kim, K., Fujita, M., Daimon, H., Fujie, K.: Application of hydrothermal reaction for excess sludge reuse as carbon sources in biological phosphorus removal, Water Science and Technology, 52(10-11), 533-541, 2005.
• Kunihiro, T., Fujita, M., Hu, H.-Y., Fujie, K.: Dynamic analysis of microbial community structure and identification of refractory chemical-decomposing bacteria by combination of quinone-profiling method and PCR-DGGE technique, Proceedings of the Institute of Statistical Mathematics, 52(2), 329-342, 2004 (in Japanese).
• Koibuchi, Y., Isobe, M., Sasaki, J., Fujita, M., Gomyo, M., Kurihara, A., Tanaka, M., Islam, M., Suzuki, T.: Field experiment of improving oxygen deficient water by micro bubble aeration system, Proceedings of Coastal Engineering, 51, 1156-1160, 2004 (in Japanese).
• Kim, K., Fujita, M., Daimon, H., Fujie, K.: Biodegradability improvement and structural conversion of polyvinyl alcohol (PVA) by sub- and supercritical water reaction, Journal of Chemical Engineering of Japan, 37(6), 744-750, 2004.
• Hasanudin, U., Fujita, M., Kunihiro, T., Fujie, K., Suzuki, T.: The effect of clams (Tapes philippinarum) on changes in microbial community structure in tidal flat sediment mesocosms, based on quinone profiles, Ecological Engineering, 22(3), 185-196, 2004.
• Kim, K., Fujita, M., Daimon, H., Fujie, K.: Change of monochloroacetic acid to biodegradable organic acids by hydrothermal reaction, Journal of Hazardous Materials, 108(1-2), 133-139, 2004.
• Fujita, M., Furumai, H., Nakajima, F.: Quinone profile analysis of activated sludge during start-up phase in anaerobic/oxic sequencing batch reactor, Journal of Japan Society on Water Environment, 27(3), 189-194, 2004 (in Japanese).
• Fujita, M., Haga, H., Matsumoto, Y., Sakamoto, Y., Nishida, K., Matsutani, J.: Application of quinone biomarker to the analysis of hillslope runoff, Proceedings of Hydraulic Engineering, 48, 343-348, 2004 (in Japanese).
• Faisal, M., Fujita, M., Quitain, A. T., Daimon, H., Fujie, K.: Recovery of natural fibers from pineapple leaves by steam explosion, Jurnal Rekayasa Kimia dan Lingkungan, 3(1), 14-18, 2004.
• Fujita, M., Kim, K., Daimon, H., Fujie, K.: Biodegradability improvement of wastewater containing vegetable proteins by hydrothermal treatment, Kagaku Kogaku Ronbunshu, 30(1), 87-90, 2004 (in Japanese).
• Hasanudin, U., Kunihiro, T., Fujita, M., Hu, H.-Y., Fujie, K., Suzuki, T.: The contribution of clams on tidal flat purification capacity, Journal of Water and Environment Technology, 2(2), 83-90, 2004.
• Fujita, M., Kim, K., Daimon, H., Fujie, K.: Evaluation of the usability of excess sludge treated by hydrothermal reaction as carbon sources for enhanced biological phosphate removal, Environmental Engineering Research, 40, 23-28, 2003 (in Japanese).
• Fujita, M., Koibuchi, Y., Hasanudin, U., Ogura, H., Fujie, K., Isobe, M.: Analysis of relationship between water quality and sediment microbial community in Tokyo Bay, Proceedings of Coastal Engineering, 50, 996-1000, 2003 (in Japanese).
• Kim, K., Fujita, M., Daimon, H., Fujie, K.: Application of hydrothermal reaction to biodegradability improvement of refractory pollutants: Structural conversion of di- and trichloroacetic acid to biodegradable products, Journal of Water and Environment Technology, 1(2), 217-224, 2003.
• Fujita, M., Furumai, H., Nakajima, F.: Quinone profile analysis of fractionated EBPR activated sludge treating municipal wastewater by centrifugation in sucrose solution, Journal of Japan Society on Water Environment, 25(12), 757-761, 2002 (in Japanese).
• Pengchai, P., Furumai, H., Nakajima, F., Fujita, M.: 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, Journal of Japan Sewage Works Association, 38(465), 97-110, 2001 (in Japanese).
• Kazmi, A. A., Fujita, M., Furumai, H.: Modeling effect of remaining nitrate on phosphorus removal in SBR, Water Science and Technology, 43(3), 175-182, 2001.
• Fujita, M., Furumai, H., Nakajima, F.: Model analysis for biological phosphorus removal in SBR activated sludge process: Effects of organic substrate composition and remaining nitrate at mixing phase, Environmental Engineering Research, 36, 155-165, 1999 (in Japanese).
• Furumai, H., Kazmi, A. A., Fujita, M., Furuya, Y., Sasaki, K.: Modeling long term nutrient removal in a sequencing batch reactor, Water Research, 33(11), 2708-2714, 1999.

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