In order to accurately predict the risk level of coal mine gas explosion accidents, based on the feature vector in line with the actual situation, the particle swarm optimization probabilistic neural network (RWPSO-PNN) is improved to realize the prediction model of gas explosion risk level.Firstly, the cause of coal mine gas explosion accident is
Bio-leaching is a non-invasive, relatively affordable and environmentally friendly method through which toxic compounds are decomposed with the help of microorganisms and with the help of enzymatic reactions.This study was conducted in order to use biological leaching in order to rehabilitate soil contaminated and resistant to biological decomposit
Avaliou-se a cromatografia em camada delgada (CCD) como método de diagnóstico toxicológico para os casos de intoxicação por aldicarb em cães e gatos, utilizando-se 50 amostras de conteúdo gástrico obtidas durante a necropsia e 50 amostras de alimentos utilizados como iscas para intoxicar criminalmente os animais.Todas as amostras resultaram