Virtual reality (VR) training technology in the mining industry is a new field Air Diffusers of research and utilization.The successful application of VR training system is critical to mine safety and production.Through the statistics of the current research and applications of VR training systems in mining industry, all the input/output devices ar

Over the last quarter century, more than 532 genes have been put forward as regulatory targets of retinoic acid.In some cases this control is direct, driven by a liganded heterodimer of retinoid receptors bound to a DNA response element; in others, it is indirect, reflecting the actions of intermediate transcription factors, non-classical associati