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Based on the analysis of long-range anti-ship precision strike process, this paper analyzed the effect factors of target acquisition probability of long-range anti-ship missile, deeply studied the effect of firing data error, auto-control endpoint dispersion error, target avoidance maneuver on the longrange anti-ship missile target acquisition probability by simulation. The simulation results show...
In this paper, cobalt ferrite nano-particles were rapidly prepared using a reverse coprecipitation method. The effects of pH value, aging time, aging temperature and calcination temperature were studied by VSM, XRD and TEM. The results presented that the conditions to obtain the cobalt ferrite nano-particles with a perfect cubic spinel ferrite type structure are the pH value of 12.00, aging time of...
Basing on analysising the importance of maintenance support process modeling and simulating, we have analysised the application characteristics of Petri model used in the process simulation. Then, aiming to some equipment system maintenance support process, we established the corresponding TTPN model. At last, by simulation we analysised indexes such as the ratio of resource using and the ratio of...
In order to improve the quality of the river water, raise constructed rapid infiltration(CRI) system was constructed. Practice shows that the location and layout of this ecological engineering conform to the source of pollution, and the system is a new technology which combines natural, social and economic systems in one. In effluent of CRI, the removal rates of CODcr, NH3-N, TN, BOD5, SS and TP are...
This article focused on the purification conditions of silica dust JiaYuGuan of GanSu. The best processing conditions turned out to be as following: calcinations temperature, 700°C; calcinations time, 120min; rate(m/m) of HCl solution(10%, by mass) and silica dust, 3.5:1; acid-dipping time, 5h. The silica dust that the percent of SiO2 was above 95%(by mass) were obtained.
The effect of preoxidation Yellow River with light polluted water by composite potassium permanganate process are studied in the text. The best adding quantity of composite potassium permanganate is 1.5-3.0 mg/l, PAC as the flocculant, the best adding quantity is 60 mg/l. Under these conditions, pretreat Yellow River with mic-polluted water which the results show that permanganate preoxidation obviously...
In order to draw a conclusion of the average longitudinal removal rate of variant forms organics and presents the influent concentration and the hydraulic load curve, the removal rate and form change of the organic pollutants with the different height of the CRI are analyzed. The results indicated that: Under this experimental condition, the reduction of the organics in the CRI mainly occurred within...
The mechanical properties, creep rupture strength, creep damage and failure characteristics of dissimilar metal welded joint (DMWJ) between martensitic (SA213T91) and bainitic heat-resistant steel (12Cr2MoWVTiB) have been investigated by means of pulsed argon arc welding, high temperature accelerated simulation, mechanical, creep rupture test, scanning electronic microscope (SEM). The results show...
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