In this paper,thermoelectric polycrystalceramic materials were prepared by a new ce-ramic technology.The p-type 72% Sb<sub>2</sub>Te<sub>3</sub>+25%Bi<sub>2</su
The multiple-scattering theory has been apower ful tool in determining the effectire physical propertiesof inhomogeneous media.This paper is concerned with thed
Cement is a kind of colloid material. This paper introduces a model of raw material proportion and quadratic programming for solving the model when three kinds