However, considerable difficulties emerge in case of urea used, which consist in high hygroscopicity and caking, reduction of the amide nitrogen proportion in the product due to decomposition of urea at relatively low temperatures during granulation and drying, and complexity of the technological process because of heavy clogging of equipment [10, 11].
Weight loss was accompanied by loss of whole body nitrogen in proportion to the overall loss of body mass.
The proportions with greater amounts of food waste had higher concentrations of mineral matter, higher peak temperature, and a better initial carbon-to-nitrogen ratio, while the proportion containing 70% of bulking agent lacked odors and leachate generation and showed a low nitrogen loss.
The active medium of a CO2 laser is a mixture of CO2, helium and nitrogen gases, in proportions 8:7:1.
Domestic sewage/manure was a major contributor to river nitrogen with the proportions of 76.4 ± 6.0% and 62.8 ± 2.1% in residence and farmland-residence zones, respectively.
All products were packed under a modified atmosphere consisting of carbon dioxide and nitrogen in different proportions, and had a shelf life of up to 10 days.
The total nitrogen increased in proportion to the peanut shell compost used.
This showed clear effects of nitrogen on the relative proportions, with increases in the proportion of ω-5 gliadins and decreases in the proportions of ω-(1 + 2) gliadins (Fig. 3).
The final increase in the relative proportions of nitrogen in the least aromatic AS fraction during microbial transformation could be related to protein formation inside the bioreactor.
In the mid-nineteenth century, following the work of the German chemist Justus von Liebig, it was thought that all plants really needed from the soil was the correct quantities and proportions of nitrogen, phosphorus, and potassium: the N-P-K ratios that you see on bags of garden fertilizer.
