A process for the polymerization of olefin's, including: introducing an olefin and a polymerization catalyst into a polymerization reactor to form a polyolefin, the polymerization reactor including: a fluidized bed region having a top and a bottom; and a motive bed region; wherein a first end ...
PURPOSE:To judge the propriety of coins based on the maximum frequency due to the sum of inductances of the both coils, by locating one pair of coils forming high frequency magnetic field opposingly to the both sides of inspected coin in series but in opposite phase connection. CONSTITUTION:...
Ta2NiS5 晶体 Ta2NiS5 是一种窄带隙半导体 (Eg~0.39 eV),具有可疑的激子绝缘体行为,如在其姊妹化合物TA2NISE5中观察到的。激子绝缘体是表现出相关电子相的新型材料系统。当激子结合能 (Eb) 大于带隙 (Eg) 时,激子会凝聚到其基态。半导体中的激子凝聚通过 Bose-Einstein 凝聚过程发生,而半金属中的凝聚通过 ...