As gradual improvement of living environment and indoor decoration form diversification,the indoor air pollution has become the"invisible killer"harming human h
The level of emergency ability directly reflects response effect of an area to emergency.Taking Central Plains Economic Zone as research object,by documents ret
As a carrier for food production,protection of arable land quantity and quality is the basis of quality and high yield agriculture. In recent years,with the acc
To ascertain the effect mechanism of high temperature after anthesis on rice quality,the experiment was conducted with two rice lines,the heat-tolerant line 996
Piggery wastewater contains high concentrations of organic matter and ammonia nitrogen, and it is difficult to treat it and make the discharged wastewater to me