A RBF-Network was applied to study the relationships between the pK_a of 13 kinds of inorganic binary hydride and the structural parameters.

Using least square fitting, the observed walues of 13 single central inorganic hydride are correlated with their C, the equation is pK_a=-21.

Finding a theoretical calculation method to obtain the accurate solvation free energy and pK_a value so as to verify or complement the experimental data has long been an important aspect for many theoretical chemists.

Discussion on Cost Reduction Ways in Coal Enterprises;

Ways for Promoting the Coaxal Precision of Trunked Hole in Finishing Boring;

The Way for Quick Excavation in Rock Roadway;

Analysis of approach on reducing medium consumption in dense medium preparation plant;

The basic approach of safety management on high gas mine;

Available Approach Preventing Top of Oil Tank from Losing Stability;