The particle diameter and luminous intensity of aluminum powder were measured by laser analyzer and photo-effect tester. The luminous intensity of [Ba(NO3)2＋Al] illuminant were studied for different shape and diameter of aluminum powder as well as ultra-fine powder prepared by chemical method. The results show that the luminous intensity increases with particle size reduced, and luminous intensity of non-spherical aluminum is more than that of spherical aluminum. The change rate of luminous intensity increases rapidly when particle diameter was less than 2μm. It’s change rate in [0.6，2.13] is 4.37 times that in [2.13，4.24] interval.The ultra-fine aluminum powder and the submicron aluminum powder can effectively enhance the luminous performance of pyrotechnics.

The removal effect of nitrobenzene (NB) in water by VUV/O3/GAC synergetic catalyzing method in a nebulizing system was studied. In addition, the effects of the droplet size, the nebulization height, O3 flux, free radical scavengers and active carbon usage frequencies on the degradation of NB were investigated. In this study, a spray nozzle that could produce 10-micrometer droplets were adopted, a UV lamp that emitted 185nm VUV light was used as the light source and a layer of 0.5cm granular active carbon was laid at the bottom of the experimental apparatus. The results showed that, in the apparatus, when the NB concentration in deionized water was 200mg/L, the nebulization height was 1.3m, O3 flux was 150mg/L, the removal rate of NB reached 95.3%. Supercarbonate acted as a catalyst in the system.

Nanosized β-tricalcium phosphate (TCP) material was produced in this study using a wet precipitation method and characterized by transmission electron microscopy (TEM) and X-ray diffraction (XRD). Human ovarian sarcoma SKOV-3 cells were cultured and the influence of nanoscale β-TCP particles on SKOV-3 cell behavior was studied in vitro. As a result, β-TCP nanoparticles with average size of 100 nm were obtained. Cell growth of SKOV-3 cells was noticeably declined in the presence of β-TCP nanoparticles (200ng/ml). The distribution of cell cycle for SKOV-3 cells cultured with and without β-TCP nanomaterials was quite different. In G1 phase of cell cycle, the percentage of SKOV-3 cells cultured in the absence of β-TCP nanoparticles was significantly lower than that cultured in the presence of β-TCP nanoparticles (p<0.01). In S phase of cell cycle, on the other hand, the percentage of SKOV-3 cells cultured without β-TCP nanoparticles was noticeably increased compared with that cultured with β-TCP nanoparticles (p<0.01). Moreover, the expression of proliferating cell nuclear antigen (PCNA) in SKOV-3 cells cultured in medium containing 200ng/ml β-TCP nanopaticles was significantly lower than that in the cells cultured without β-TCP nanoparticles (p<0.01). In conclusion, the nanoscale β-TCP material synthesized in this study can exert anti-tumor effects on SKOV-3 cells through mechanisms of cell growth inhibition, downregulation of PCNA expression and cell cycle arrest at G1 phase.

TNT-RDX wastewater is hard to biodegrade and highly toxic. The self-made reactor was used to degrade the wastewater, spray and the conditions of droplet diameter, number of nozzle, spray height were clearly observed. The results show that the average COD removal rate of TNT-RDX wastewater was 69.6%.The spray conditions can improve the dispersion of the wastewater and increase the use of the residual ozone in gas phase. Keywords: Spray; TNT-RDX wastewater; ozone; UV; GAC