About ITO Ryusei
About International Inst. Water and Environmental Engineering (2iE), Ouagadougou, BFA
About ITO Ryusei
About Hokkaido Univ., Sapporo, JPN
About TAKAHASHI Eri
About Hokkaido Univ., Sapporo, JPN
About FUNAMIZU Naoyuki
About Hokkaido Univ., Sapporo, JPN
About Environmental Technology
About Urine
About nitrogen fertilizer
About 13C NMR
About sulfuric acid
About pH
About urea fertilizer
About precipitation (sedimentation)
About spectrum
About useful material recovery
About aliphatic aldehyde
About urea compound
About NMR spectra
About sustained release
About excreta
About excretory substance
About メチレン尿素
About Raw sewage treatment
About Recycling of resources
About Fertilizer preparation and reservation
About Formaldehyde
About Urea
About 尿
About 徐放性
About 窒素肥料