The results showed that when concentration of H 2S and content of oxygen were 1500-2500 mg/m3 and 5% respectively, Fe 2+, Zn 2+ and Mn 2+ had action of catalytic oxidation for purification of H 2S on liquid phase, their catalytic property in order from large to small was Fe 2+>Zn 2+>Mn 2+, and the catalytic property of Fe 2+ was larger greatly than two other ions.
It also shows that the minimum content of oxygen reaches 10. 7×10-6, with an average of 15. 9×10-6;
Amorphous AlN can be changed into crystalline AIN at 1450℃ with particle size less than 250nm, a geometric standard deviation (GSD) less than 1.3, content of nitrogen greater than 33.5％, content of oxygen, chlorine and metallics less than 1.0％, 0.1％, 1.5×10~(-2)％ respectively.
The measures adopted to reduce the content of oxygen in steel are introduced, such as catching carbon, raising rate of one-time turning down, lowering tapping temperature, controlling slag amount, white refining slag deoxidizing and etc. The content of oxygen came down from 50.04×10-6 in 2001 to 19.13×10-6 in Feb. 2004, distinguished effect got, quality of steels improved.
The statistic results showed that with using 4.46 high basicity slag series,deoxidant containing 32.8% Al,VD vacuum treatment for 25 min and controlling ≤0.030%,the oxygen content in GCr15 bearing steel was ≤8×10~(-6).
GCr15轴承钢钢包精炼时采用碱度为4.46的高碱度渣系,用含32.8%Al的脱氧剂,并进行25 min VD真空处理,保持[Als]≤0.030%,统计结果表明GCr15轴承钢的氧含量≤8×10-6。
Experimental conditions were selected as follows: coal particle size was smaller than 63 μm; reaction temperature was 1 100°C, 1 250°C and 1 400°C respectively; oxygen content was 20% and 50% respectively.
Increasing temperature leads to the formation of more PM; varied oxygen content leads to much change of emitted PM.
It is suggested that ascorbic acid is capable of supporting the system of energy supply to cells in hypoxia caused by reduced oxygen content or treatment with sodium nitrite.
Most likely, low oxygen content in water, high resuspension of fine sediment particles rich in dead organic matter, and high content of contaminants accumulated in muddy sediments are the main factors of decelerated growth of scallops on muddy sites.
Investigation of carotenoid conformations in myelin nerve upon changes in oxygen content
The coordinated oxygen contents in the oxygenated complexes were also determined by weight method.
We studied the magnetic field-tuned superconductor-insulator transition (SIT) in amorphous In-O films with different oxygen contents and, hence, different electron densities.
Temperature dependences of the resistivity tensor components ρab and ρc were measured for YBa2Cu3O7-x single crystals with different oxygen contents.
Symmetry analysis is carried out for the ordered phases of cubic monoxide TiOy with relative oxygen contents y>amp;lt;1 and y>amp;gt;1.
A strong oxygen deficit in the summer was recorded after cold winters, when early freezing suppressed the vertical mixing, and/or in the years of a significant inflow of salt waters from the Baltic Sea with low oxygen contents.
The following environmental factors were determined: the level of photosynthetically active radiation (PAR) penetrating the water column; the water temperature; and the content of oxygen, nitrogen, phosphorus, and dissolved organic substance.
A further increase in the content of oxygen vacancies stabilizes the antiferromagnetic charge-disordered state.
GaN:O solid solution films with various content of oxygen were obtained by the vapor phase deposition method using pyrolytic decomposition of gallium monoammine chloride in the presence of water vapors on substrates of crystalline quartz and silicon.
The content of oxygen, electrical conductivity, and thermal electromotive force were measured for ferrite Sr3Fe2O6+δ over the oxygen partial pressure range 10-4-0.5 atm at 650-950°C.
The differences in the magnetic and transport properties of single crystals grown in argon and oxygen are explained by the various content of oxygen vacancies and by their possible ordering.
It is shown that the irradiation in vacuum, with subsequent exposure to air (5 days, 300 K) or oxygen (30 min, 1 × 10-1 Pa) at the irradiation temperature, resulted in an increase in the oxygen content in beryllium.
The yield of the desired product increases with an increase in the oxygen content in the course of heat treatment of the targets.
An impedancemetry method is employed to investigate a porous gold electrode in contact with a solid oxygen-conducting electrolyte on the basis of zirconium dioxide of the same cationic composition, whose samples differ in the oxygen content.
The specific feature of the phases revealed is an unusually pronounced deformation of the crystal lattice (with an increase in the oxygen content in the specimen, the lattice parameter increases by 0.5-0.6%).
It is demonstrated that the oxygen content in the films increases with an increase in the oxygen pressure P(O2) at a fixed substrate temperature Tsub and decreases with an increase in the substrate temperature Tsub at a fixed oxygen pressure P(O2).