Since the discovery of BiSrCaCuO superconductor, for stabilizing and promoting the formation of high T<sub>c</sub> 2223 phase substituting a part of Bi with Pb
Ⅰ. INTRODUCTIONConsider the differential operators■and(a<sub>jk</sub>)is a symmetric real matrix.L<sub>x</sub> is a second order homogeneous left invariant op
The atom force microscope (AFM)can be used to investigate surface structures of different kinds of materials including organic molecules, and without any requir
Ⅰ. INTRODUCTIONThirty organic superconductors have been synthesized since the first organic superconductor (TMTSF)<sub>2</sub>PF<sub>6</sub> was synthesized in 1
Recrystallization of f. c. c. metals is traditionally assumed as a process of nucleation and grain growth, and the recrystallization mechanism can be mainly des
After Doll presented the well-known geometrical factor theory, Moran et al. fully discussed the propagation effect of electromagnetic waves in formation media a
Studies show that retaining water and infiltrating rainfall into soil by constructing artificial vegetation on the slope land of the loess rolling and gullied r
The ceramic workpiece is a kind of sinter with the higher hardness and brittleness so it is difficult to do machining. Because of its special physical, chemical
Duck hepatitis B virus (DHBV) and its prototype human hepatitis B virus (HBV) are members of the hepadnavirus family. They have several characteristics in commo