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A signal acquisition system for the number of projectiles in the fire control system based on Proteus’s AT89C51 single-chip microcomputer is proposed. Take 89C51 microcontroller as the control core, Tested and analyzed the projectile signal of a tank gun with its rich peripheral interface and I/O resources. Then, the amount of initial velocity reduction is determined according to the number of projectiles of each type of artillery. The system has completed the collection, storage and calculation of a certain type of tank gun projectile signal, and has an interface for communication with the host computer. It can complete the information transmission with the fire control computer, and has the advantages of small size, simple structure and easy implementation. It has certain application value for the automatic correction of the initial velocity reduction of tank guns. It also provides some reference for the system design of the military department.

The thermal properties of concrete and steel were concerned. Specific heat, thermal conductivity, density and thermal contact conductance at the steel-concrete interface were compared from different researchers. Different ways of calculation method of heat transfer were summarized. A finite element method (FEM) procedure was suggested to calculate temperature distribution of concrete filled steel tube reinforced concrete (CFSTRC) column with suitable thermal properties of concrete and steel. The results showed that different models of thermal properties of concrete and steel dispersed widely. The dispersion of thermal properties of steel was smaller than that of concrete. Moisture and aggregate type had some influence on specific heat of concrete, and aggregate type had some influence on thermal conductivity of concrete. Thermal conductivity of reinforcing steel and stainless steel showed a reverse trend with temperature increasing. The influence of temperature on density of concrete and steel was slightly. Cross-sectional type had some influence on thermal contact conductance at the steel-concrete interface in some models, but constant values have been used extensively by different researchers. According to experimental validation, the FEM procedure was capable of predicting temperature distribution of CFSTRC columns with an accuracy that was sufficient for design purposes.

Based on the problems appeared in some infantry fighting vehicle's actual training, this paper combines the advantages of virtual maintenance, proceeds from aspect of system engineering, takes demand of actual training into account, uses Solidworks, 3ds max and EON synthetically, chooses the form of desktop, set up a virtual maintenance training system of the equipment.

According to the current circumstances, the cultivating and training of the newest armored equipments maintenance support personnel is difficult to meet army's demand all the time, and can't meet the needs of equipments development either, we researched the maintenance training simulation system which is basic to half-practicality and virtual reality technology in chief. We made the overall design of the armored equipments weapon, which is aimed at the weapen system, and developed the half-practicality maintenance training subsystem according to the reform of simulator, and the virtual maintenance training subsystem and teachinging board to show the control principles, what these thing we do is very important to open up means of maintenance training and improve the level of maintenance support personnel, and provide maintenance training experience for the others weapon equipments.

In order to understand the MMP-2 and TIMP-2 expression of sclera and scleral fibroblasts after posterior sclera reinforcement, three-week-old rabbits were monocularly performed by eyelid suturation randomly to prepare experimental myopia eye. After 60 days, the experimental myopia eyes were treated by posterior scleral reinforcement. After 6 months the posterior pole sclera tissue and scleral fibroblasts were obtained for detection by immunohistochemistry and ELISA method. The results show that the MMP-2 expressions of sclera tissue and scleral fibroblasts were decreased after PSR, and the scleral fibroblasts of transition tissue had less MMP-2 expression than sclera, there was no change of TIMP-2 expressions on cellular and tissue level. It was indicated that the balance of MMP-2 and TIMP-2 expression play an important role in the process of treating high myopia with PSR surgery.

In order to improve the precision and reliability of prediction of deformation monitoring data, radial basis function artificial neural network is used in deformation monitoring data processing. The prediction result of this method is compared with the prediction result of BP neural network prediction methods, and it is concluded that through the radial basis function artificial neural network better prediction result can be obtained.

The whole life-cycle cost management is a concept of modern project management. Combined with China's national conditions, this article has put forward a basic strategy of the whole life-cycle cost management of civil engineering projects, given some basic analysis and calculation methods of the whole life-cycle cost management, introduced an overview of the integrated management system for the development of the whole life-cycle cost management of civil engineering projects, expatiated information flow management and risk management elements in life cycle cost management and designed a framework of whole life cycle risk management.

The effects of cyclic stretch on apoptosis of human squamous carcinoma of tongue cell line Tca8113 were studied by Flexercell-4000 strain unit, examined and analyzed by flow cytometry.Tca8113 cells were grown on six-well culture plates and loaded by different regimen(different waveform and elongation amplitude). Results: The apoptosis rate increased significantly in experimental groups when compared with the control group and the apoptosis rate increased significantly with the stretch amplitude (P

There are internal and external reasons for the occurrence of landslip. Through the analysis on a large number of investigation materials of landslip, the growth inducements of landslip are found out. By use of theories in blur maths, we conduct order arrangement of these inducements in accordance their significance, put forward blur judgment rule of landslip estimation and present applicable examples.