In Dec.5,1988,we successfully developedsome high J<sub>c</sub> Y-Ba-Cu-O superconductortape on a nickel substrate by means of powderrolling.The tape is 0.94mm<s
In the presence of ethyl alcohol or emulsifier OP,molybdenum(Ⅵ) forms 1∶1∶1’water soluble colored coordination com-pound with both of 2-(2-thiazolylazo)-5-d