About KOBA KEISUKE
About 京大 生態学研究セ
About 海洋化学研究
About nitrogen cycle
About dinitrogen oxide
About isotopic ratio
About stable isotope
About denitrification(soil)
About nitrification
About mass spectrometry
About groundwater
About surface course
About oxidation
About ammonia
About nitrous acid
About dissolved component
About reduction(reaction)
About ammonia oxidation
About 亜硝酸酸化
About marine surface layer
About oxygen stable isotope ratio
About nitrogen stable isotope ratio
About isotope ratio mass spectrometry
About dissolved nitrogen
About Geochemistry of hydrosphere and biosphere
About Influence of environmental factors in general
About 窒素化合物
About 窒素
About 酸素安定同位体比
About 窒素循環
About 解析
About N2O