total ammonia
3.The levels of serum alanine aminotransferase (ALT), aspartate aminotransferase (AST), total bilirubin (TBIL), ammonia, and PT were significantly low- er in Chinese medicine group and medical ozone group that those in control group (P < 0.05 or P < 0.01), and there were also notable difference between Chinese medicine group and medical ozone group (P < 0.05 or P < 0.01).
4.By the adoption of a colunm with highly effective bubblecapplates and float valves and the strict control of demineralized water consumption, the total amount of dilute aqua ammonia from the three sections of earbonation, final purification and synthesis is less than the quantity of dilute aqua ammonia required for the production of ammonium bicarbonate, with zero discharge of the dilute aqua ammonia, thus not only prolecting the environment but also realizing a cestain economic benefit.
5.Overall speaking, the quality of the ground water in most of the cities and regions in the entire country is very good, with point and non-point pollution in certain regions to certain extent and certain indicators exceeding the standards. The key pollution indicators include mineralization degree, total hardness, nitrate, sub-nitrate, ammonia nitrogen, iron, manganese, chloride, sulfate, fluoride and pH value.
8.This paper has technical and economic analyses about urea capacity enlargement from 60 kt/a to 100 kt/a by modifying main units of 60 kt/a total solution recycling urea plant, such as CO 2 compressor, liquid ammonia pump,primary ammonium aminoformic pump, urea converter and medium and low pressure absorption and decomposition systems.
