AT present, it is universally accepted that pegmatite can be crystallized from volatile-rich peraluminousresidual granitic melt in a relatively closed environme
Nd<sup>3+</sup> -doped double-clad fiber is a new type of fiber that has large N.A.and large receivingarea compared with single-clad rare-earth-doped fiber.So N
As is well known, the relatively low critical current density J_c and the serious flux motion limit a variety of applications of high-temperature superconductor
So far accelerator mass spectrometry (AMS) technique has been used for the determination of numbers of important long-lived radioisotopes, such as <sup>10</sup>Be
LET G be a connected linear simple Lie group. Knapp and Speht showed that if P=MAN is a cuspidal parabolic subgroup of G, then there exists a unique basic case
LET X=(X<sub>t</sub>,P<sup>x</sup>) be a right Markov process with state space (E,ε), semigroup (P<sub>1</sub>) andresolvent (U<sup>q</sup>). As in ref.[1, 2], we deno