0 a substance found in urine and also made from ammonia, used in fertilizers, animal feed, and in the plastics industry -- 尿素
Individual oligomers produced in heating experiments on urea-amino acid mixtures were analysed using a liquid chromatograph mass spectrometer.
As a result, seven fields were not planted and, in a further seven fields, not all the required urea was applied.
The price of urea has been used as a base value for the estimation of these prices.
After urea application, one field was not harvested due to the death of the far mer, and another due to drought.
Many elderly patients are admitted to hospital with a raised urea, usually considered to be caused by dehydration.
The high grain ration initially comprised 50 % rolled sorghum and 50 % feedlot meal mix (lucerne, sorghum, barley, molasses, macronutrients, no urea or antibiotics).
Managing crop residue with green manure, urea, and tillage in a rice-wheat rotation.
They were fed with rice straw treated with 50 g urea/l as the source of roughage throughout the experiments.
