Urea metabolism and its significance in the nitrogen cycle in the euphotic layer of lake biwa japan i. in situ measurement of nitrogen assimilation and urea decomposition. Archiv fuer Hydrobiologie 107(1): 23-52, 1986
Urea metabolism and its significance in the nitrogen cycle in the euphotic layer of lake biwa japan iv. regeneration of urea and ammonia. Archiv fuer Hydrobiologie 107(4): 425-440, 1986
Urea metabolism and its significance in the nitrogen cycle in the euphotic layer of Lake Biwa. 4. Regeneration of urea and ammonia. Archiv fuer Hydrobiologie, 1074: 425-440, 1986
Urea metabolism and its significance in the nitrogen cycle in the euphotic layer of lake biwa japan iii. influence of the environmental parameters on the response of nitrogen assimilation. Archiv fuer Hydrobiologie 107(3): 281-300, 1986
Seasonal changes of dissolved organic carbon nitrogen phosphorus and urea concentrations in lake biwa japan. Archiv fuer Hydrobiologie 91(1): 1-14, 1981
Urea metabolism and its significance in the nitrogen cycle in the euphotic layer of lake biwa japan ii. half saturation constant for nitrogen assimilation by fractionated phytoplankton in different trophic areas. Archiv fuer Hydrobiologie 107(2): 167-182, 1986
A method for estimating uptake and production rates for urea in seawater using carbon 14 urea and nitrogen 15 urea. Canadian Journal of Fisheries & Aquatic Sciences 46(2): 198-202, 1989
Sedimentation rate and sedimentary anomaly in the surface layer of the bottom of Lake Biwa. Chikei = Transactions - Japanese Geomorphological Union 9(3): 220-221, 1988
Urea decomposition by a freshwater red tide phytoplankton in Lake Biwa. Memoirs of Osaka Kyoiku University Series III Natural Science & Applied Science 41(1): 25-33, 1992
Uptake of urea carbon and urea nitrogen by the coastal marine diatom thalassiosira pseudonana. Limnology & Oceanography 33(4 PART 1): 528-537, 1988
Carbon to nitrogen to phosphorus ratios of seston in lake biwa japan as indicators of nutrient deficiency in phytoplankton and decomposition process of hypolimnetic particulate matter. Japanese Journal of Limnology 46(4): 239-246, 1985
Utilization of urea nitrogen by lactating cows depending on rate frequency of urea intake. Zhivotnov"dni Nauki 26(6): 51-57, 1989
In situ measurement of the urea decomposition rate and its turnover rate in the pacific ocean. Marine Biology 58(2): 147-152, 1980
Kinetics of the decomposition of 14C-urea in soil in relation to rate of application of urea, microbial activity and soil type. Agrokhimiya (9): 23-27, 1972
The uptake and utilization by plant roots of carbon from C14-iabelled urea (Part 3). Differences in carbon uptake between upland and waterlogged sous and between urea and bicarbonate carbon. J. Sci. Soil. Tokyo, 30: 427-468, 1959