Based on the experimental research and production practice of ore in Liumei gold mine,the following technical measures to enhance the dressing recovery rate were discussed,such as more crushing and less grinding,rational ball loading in ball mill,strengthening and activation,to ensure the flotation period.

The survey results accord with its activity intensity, so radon surveying can be regarded as a method for fault activity evaluation.

Aiming at the resource-located problems and free-riding phenomenon during sharing P2P information in large scale network, this paper proposes a semantic community establishing method based on consideration of semantic similarity degree, trust degree and active strength, which improves the structural and resource-located veracity of P2P resource organization.

Finally,the influence mechanism of combustion temperature to strength activity with pulverized strontium slag was analyzed through X-ray spectrum and XRD.