Low temperature phase barium metaborate β-BaB2O4 (BBO) is an important nonlinear optical material. Up to now, the BBO single crystals with large size and good
The present paper presents a new experimental method to measure the deceleration time history of projectiles penetrating into concrete in full-size test. The ex
In this paper,the Cauchy problem of Boltzmann-Poisson system with the relaxation term is considered.The global existence and uniquessness of the smooth solution