The purpose of this study was (a) to develop a valid and reliable attitude
toward science instrument for use with Arabic male students at the secondary
school level, (b) to determine the differences in their attitudes toward science and
in their achievement, and (c) to determine the relationship between measures...
A complete analytical model of radiative and convective heat
transfer to a horizontal tube in small and large particle gas fluidized
beds has been developed. In the model the bed of particles
consists of an emulsion phase and a bubble phase. The emulsion phase
is approximated by a series of...