theoretical density
1.For the active filler?containing system, the theoretical density not only relates with the ceramic yield of the polymer and the density ratio between the pyrolysis product and polymer, but also relates with the reaction yield and density ratio of the active filler after reaction, and the volume shrinkage of the composite.
2.The DFT-B3LYP method, with basis set 6-31G*, is employed to optimize molecular geometries and electronic structures of a series of nitramines and nitro arenes. The averaged molar volume (V) and theoretical density (ρ) are estimated using the Monte-Carlo method based on 0.001 e·bohr-3 density space.
3.A new approach termed graded sintering under ultra high pressure (GSUHP) for fabricating functionally gradient material (FGM) that possesses escalated resistance distribution and large melting point difference was proposed and by which a 96% theoretical density of W/Cu FGM was successfully fabricated.
6.Theoretical calculation for AMX spin system with density operators is given and coincides with the results of experiments.
7.This article solves some theoretical problems of electrostatic suspension based on optoelectronic feedback control.The mechanism of electrostatic induction of conductive suspended objects (CSO) and electrostatic polarization of insulting suspended objects (ISO) was theoretical discussed.The equations of charge density on the surface of suspended object caused by electrostatic field were developed.We further provided the equations describing the quantitative relationship of electrostatic forces verses the electrode voltages,the electrode area,the suspending gap,and the electric characteristic of suspended object.These equations show that the inducted surface charge density of CSO is greater than the polarized surface charge density of ISO,as a result,the electrostatic force acting on CSO is larger than that acting on ISO,as already proved by the experimental results of measured electrostatic forces.This work provided the theoretical equations and the mathematical models for effectively realizing the optoelectronic feedback control of electrostatic suspension.
8.Theoretical Analysis of Coriolis Mass Flow Meter for on Line Continual Determination of Fluid Density
9.A theoretical method was proposed to extend a bridge density functional approximation (BDFA) for the non-uniform hard sphere fluid to the non-uniform Lennard-Jones (LJ) fluid.
10.The previous theoretical works on molecular crystals using ab initio methods (density functional theory, Hartree-Fock methods) and related semi-empirical methods have been reviewed.
