In this experiment,downconversion nanocrystalline powders Y2O3 codoped with Tb3+ and Yb3+ have been prepared by chemical coprecipitation method.The suitable con
Cost effective method to get controllable high quality graphene is meaningful for the basic research and industry application.Graphene with mobility 25000 cm2V
As the neutron and γ-ray yields in high power takamaks,such as HL-2A and EAST,neutron energy and space distribution measurements will play a important role in