The variational regulation of inclusions and total oxygen in the IF Molten Steel during the RH refining process after deoxidization was studied. The results show that the relationship between total oxygen content and time is in accord with the following equation, T.O=271.25e-1.53t+23.49, R2=...
The total phenolic content ranged from (10 ± 0.2 to 53.33 ± 1.38 mgEq GAE/g DW), and the total flavonoid concentrations varied from (13.66 ± 0.33 to 95.33 mg RE/gDW). Ethanolic extract ofVitex agnus-castusleaves has shown the highes...
C.Reagents (a)Oxygen.—Ultrahighpurity(99.995%),extradry(<5mg/L H 2 O). (b)Nitrogen-freewater.—<0.1µgnitrogen/mL.Useforalldilutions. (c)Urea.—ACSreagentgrade;driedat60°Covernightand cooledtoroomtemperatureindesiccator. (d)Externalcontrol.—Aqueoussodiumnitritesolutionwithcer- tified...
证明完成在程序控制之下和通过使用物理控制。 [translate] aAt least I had 至少我有 [translate] aThe total reserve of liquid oxygen, nitrogen and argon all exceed several ten thousand normal cubic meters. 液氧总储备,氮气和氩全部超出几一万法线立方米。 [translate] ...
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Equation(10)is a model for abiotic oxidation of organics. Because we rarely know what compounds are present in water, a chemical procedure in which the amount of oxygen required to carry out the reaction ofEq. (10a) is determined. The oxygen consumed is called the COD and is reported in ...
Total antioxidant activity, metal chelation, radical scavenging (DPPH) effects and reducing power as well as activities destructive to active oxygen species such as the superoxide anion radical, hydroxyl radical, and hydrogen peroxide are widely used for this purpose (Shimada et al., 1992). In ...
and nonspecific measure of water quality. The hike in the levels of TOC is because of escalating microorganism's growth, soil biota, root exudates as well as decomposition of plant and animal residues, leading to the depletion of oxygen supplies increasing the organic content in the water source...
surface “boil” (Fig. 6A). This method destroys or prevents thermal stratification; therefore, it is not feasible in sites where deep cold water is necessary to maintain coldwater fish populations. It is, however, a good solution to potential oxygen depletion problems for warmwater fish ...