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The hepatopancreatic cell culture of the kuruma prawn, Litopenaeusvannamei, was conducted to identify the effects of zinc on cell division. The culturesystem consists of medium 199 (M 199) supplemented with 0.060 mol/L NaCl,1.011g/L glucose, 1000 UI/ml penicillin, 1000 μg/ml treptomycin, 20% heatinactivated fetal calf serum (FCS) for primary cells and 10 % for subculture cells. TheRNA/DNA ratio in cultured cells was measured. The results show that the celldivision of cultured hepatopancreas cells in L. vannamei was increased by the optimalconcentration of Zn2+, 80 μg/L.

The equilibria phase of the ternary systems NaCl-CsCl-H2O was studied at 50°C by the isothermal evaporation method. The equilibrium phase diagrams were plotted in line with the experimental data. It suggest that the phase diagram of NaCl-CsCl-H2O is the simple eutectic type where one invariant point is found to have the compositions of 12.3% NaCl, 54.1% CsCl and 33.6% H2O by mass, respectively. The study provide fundamental thermodynamic data of brine system that contains sodium and cesium, and has practical significance for the brine’s comprehensive utilization.

With the widely research of Photocatalytic titanium dioxide, researchers have found another way of managing air quality. As an excellent photocatalyst material, nanometer titanium dioxide has begun to be used in road engineering in recent years. In this paper, at first, different content of titanium dioxide were dispersed evenly and separately in a kind of silane solvent to make the coating material with photocatalytic performance. The results show that nanometer titanium dioxide is able to decompose CO, HC, NO and CO2 after being dispersed in silane solvent. The results also show that a certain content oftitanium dioxide can be chosen after considering effect, workability and economic factors in practical application. Then the brushing method and the decomposition effect of the photocatalytic paint are discussed. The tests indicate that proper content of nanometer titanium dioxide with suitable brushing method can maximize catalytic efficiency. At last, in order to study the decomposition mechanism, using ion chromatography and chemical titration to analyze the decomposition products separately, the results prove that nanometer titanium dioxide can decompose NO, HC, CO and other harmful gases into nitrate and carbonate.

With the widely research of nano-TiO2, researchers have found another way of managing air quality. As an excellent photocatalyst material, nanometer titanium dioxide has begun to be used in road engineering in recent years. In this paper, substantial gas decomposition tests are performed utilizing the self-designed sealed container and UV aging box. At first, the catalytic efficiencies of nanometer titanium dioxide dispersed in silane solvent and in asphalt mixture were compared. The results show that nanometer titanium dioxide is able to decompose CO, HC and NO after being dispersed in silane solvent and asphalt mixture. To achieve the same catalytic efficiency, the amount of the nanometer titanium dioxide dispersed in silane solvent is much less than that in asphalt mixture. For asphalt mixture, high void fraction may mean high catalytic efficiency. Then the long-term decomposition of asphalt mixture was discussed. The asphalt mixture still has good catalytic decomposition effect after six months. The catalytic effect of asphalt mixture does not diminish over time and the effect of decomposing HC has improved after six months. At last, for cement paint, the catalytic effect of decomposing NO and HC does not diminish over time, but the effect of decomposing CO reduces.

Studies have shown that nanometer Titanium dioxide is an excellent photocatalyst material, which owns environmental protection function of decomposing car exhaust, and it begins to be used in road works in recent years. In this paper, firstly a representative concentration ratio of each component in exhaust gas is reached according to statistical result from a large number of vehicle exhaust samples, and simulated gas used in laboratory test is prepared according to the ratio. Then substantial gas- decomposition tests are performed utilizing the self-designed sealed container and UV aging box. Applying ion chromatography to analyze the decomposition products, it is proved that nano-titanium dioxide can decompose NOx, HC, CO and other harmful gases into nitrate and carbonate. Subsequently, an excellent concrete protection materials- anticorrosive of silane solvent is selected as dispersion solvent, and a certain amount of titanium dioxide is dispersed evenly in the solvent to make the coating material with photocatalytic performance, the brushing method and decomposition effect of the coating material are discussed. In the end, a brushing method with better decomposition effect is applied on cement collision wall on middle ring in Pudong district, while nano-titanium is also contained in the surface layer of pavement; Field measurement results show that the decomposition of car exhaust effect is obvious.

The effects of linoleic acid on hepatopancreatic cell culture of the kuruma prawn, Penaeus vannamei were conducted. The culture system consists of 199 media (M 199) supplemented with 0.060 mol/L NaCl, 1.011g/L glucose, 1000 UI/ml penicillin, 1000 μg/ml treptomycin, 20% heat inactivated fetal calf serum (FCS) for primary cells and 10 % for subculture cells. The content of phosphorus in cultured cells was measured. The results show that the growth condition of cultured hepatopancreas cells in P. vannamei was significantly improved by added 160 μmol/L linoleic acid.