The cause of the climactic transition has been unclear. Now a research team from China finds evidence that atmospheric oxidation led to Mars being cold and bipolar in its early history.

Fertilizers common to crop production in Indiana usually contain nitrogen in one or more of the following forms: nitrate, ammonia, ammonium or urea. Each form has specific properties that determine ...

Researchers at Colorado State University have identified an alternate method to study changes during the DNA replication ...

Sandra A. Banta-Wright, MN, RNC, NNP; Robert D. Steiner, MD Neonates with profound and prolonged hyperammonemia with coma due to urea cycle defect will have had a neurological insult to the brain ...

Foods which contain edible oils will spoil once exposed to oxygen from the air due to oxidation reactions. This chemical change results in a bad flavour and smell from the food. If left exposed to ...

Urine contains water, urea and salts. Urea is produced in the liver when excess amino acids are broken down. Urea is the main waste product removed in the urine, as it is not reabsorbed in the kidney.

A modern system includes a diesel oxidation catalyst that converts carbon ... unit that works with a urea-based diesel ...

Roberts, J.T. Thermal processing and native oxidation of silicon nanoparticles ... Winters; Design of Activated Carbon for Urea Adsorption. Presented at the 255th ACS National Meeting and Exposition, ...

For complete oxidation, pyruvate molecules generated in ... which is converted into urea and excreted. Deamination reactions in other organs form ammonia that is generally incorporated into ...

It provides a higher strength material compared to polyethylene-type polymers; however, polyacetal materials are susceptible to oxidation at elevated temperatures ... when mixed with suitable ...

It has been shown that silymarin is as active as quercetin and dihydroquercetin, and more active than quercitrin, in terms of antiperoxidant activity, independent of the experimental model used to ...

The erythrocyte sedimentation rate was 60 mm. per hour. The blood urea nitrogen was 5 mg., and the fasting blood sugar 94 mg. per 100 ml., and the serum electrolytes were normal. The serum was ...