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For solving the waste and pollution problem of cured urea-formaldehyde resin caused by multi¬ple reasons such as inappropriately operation, the industrial solid waste urea-formaldehyde resin was adopted and its degradation was analyzed under various treated factors based on reversible reaction characteristics of urea-formaldehyde resin. The result showed that the degradation rate of treated resin can reach 99 with a condition of strong acid ( pH*3 ) treatment environment, the maas ratio of formalde¬hyde solution to solid waste urea-formaldehyde resin 4:1,the treated temperature (70 -85) °C and 3 ratio penetrant. And it was continued to be used as part raw material for urea-formaldehyde resin synthesis with a content of 5 maas ratio, with which seven-layer plywood was produced according to industrial test, the results of bonding strength,formaldehyde release could meet the requirements of the standard in China. [ABSTRACT FROM AUTHOR]

In this paper, the threshold of the early warning of grassland fire disaster risk is determined by the optimal segmentation, and it can give a quantitative and objective classification and make a scientific result. GIS grid has both the display form of raster data and vector data's attribute information, it is the details of traditional vector data. Grid GIS technology combined was used in the spatial distribution of indicators of the constituency which will make space rating scale more accurate. With the optimal partitioning of the fire cases from 1994 to 2004, early warning threshold was identified and was divided into the blue, yellow, orange and red alarm. [ABSTRACT FROM AUTHOR]

As the informatization construction of troops further develops, military colleges students are the backbone for future military information construction. How well the students in military colleges are able to master and use informationization, is directly related to the effect of informatization construction of the army. This paper introduces the meaning and contents of information literacy, proposes specific methods and measures to cultivate the students' information literacy. [ABSTRACT FROM AUTHOR]