Poly urea-formaldehyde was synthesized simply and rapidly from urea and formaldehyde by condensation polymerization and studied for the sorption of trace acid blue from aqueous solution. The optimum pH value for sorption of the acid blue was 4. Experimental results showed that the sorption capacity of poly urea-formaldehyde for acid blue was determined. The synthetic polymer can be reused for 5...

Recent findings have shown that microbial nitrogen flow and digestible energy of diets are increased when urea is combined with a slow-release urea (SRU) in diets with a starch to acid detergent fibre ratio (S:F) 4:1. This affect is attributable to enhanced synchrony between ruminal N availability for microbial growth and carbohydrate degradation. To verify the magnitude of this effects on lamb...

Urea is one of the final products of protein metabolism. In clinical analysis and dairy industry urea is a very significant parameter as excess in blood serum from its permissible range causes dysfunction of the kidney. Hence, its analysis is significant and is carried out frequently in various laboratories [1, 2]. Urea is an omnipresent compound present in blood and various organic fluids. It ...

In order to investigate the effect of urea, Azocompost and cutting on growth characteristics of Oregano, a factorial split-plot experiment was conducted based on randomized complete block design with three replications at Yazd and Mashhad, Iran, during 2012-2013 growing season. Four urea levels and four Azocompost levels (to provide 0, 40, 80 and 120 kg N.ha-1 each) for Yazd location )0, 43.5, ...

Methanol oxidation (MOR) and urea (UOR) have been considered for new types of fuel cells, but the lack highly active nonnoble metal catalysts restricts such cells. A NiCo-modified biomass carbon (milk as source)-based catalyst with a 3D structure is synthesized by using salt templates. The results show that 3D-C-NiCo (1:1) exhibits excellent MOR UOR properties potential 1.33 V vs. RHE 1.35 at 1...

Poly urea-formaldehyde was synthesized simply and rapidly from urea and formaldehyde by condensation polymerization and studied for the sorption of trace acid blue from aqueous solution. The optimum pH value for sorption of the acid blue was 4. Experimental results showed that the sorption capacity of poly urea-formaldehyde for acid blue was determined. The synthetic polymer can be reused for 5...

9 Sustainable management of toilet waste must prevent disease transmission but allow reuse of plant 10 nutrients. Inactivation of uterus-derived Ascaris suum eggs was studied in relation to ammonia in 11 source-separated urine without additives and in human faeces to which urea had been added, in order to 12 evaluate ammonia-based sanitation for production of safe fertilisers from human excreta...

We aimed to identify the early stress response and plant performance of Medicago truncatula growing in axenic medium with ammonium or urea as the sole source of nitrogen, with respect to nitrate-based nutrition. Biomass measurements, auxin content analyses, root system architecture (RSA) response analyses, and physiological parameters were determined. Both ammonium and ureic nutrition severely ...

9 Sustainable management of toilet waste must prevent disease transmission but allow reuse of plant 10 nutrients. Inactivation of uterus-derived Ascaris suum eggs was studied in relation to ammonia in 11 source-separated urine without additives and in human faeces to which urea had been added, in order to 12 evaluate ammonia-based sanitation for production of safe fertilisers from human excreta...