Through analyzing the constitution of crimes related to wastes,especially the crime of illegal disposal of solid waste and comparing and analyzing the three crimes we consider that the provisions of The Criminal Law need improvement.

The study to teenagers' non-penalty of the frontier rural area based on the the village community

The dispersion radius for the leak out of stored chlorine has been estimated by using of poisoning zone estimation method, and based on the estimated dispersion radius, the corresponding treatment method after chlorine leak out has been proposed.