New polyimide polymer has excellent processing characterisitcs with improved thermo-oxidative and hydrolytic stabilities

Polyimide P10P and its processing technique apply to most high temperature plastic products, devices and castings. Prepolymer, when used as varnish, impregnates fibers directly and is able to be processed into advanced composities. Material may also be used as molding powder and adhesive

Effects of Transportation Planning on Urban Areas

Author Institution: Department of Urban Studies, The University of AkronThe greatest effects of the Federal Aid highway-oriented policy have been social, economic, and environmental. People have been displaced, neighborhoods have been changed, business patterns have been altered, the air has been polluted, and our cities even look very different—primarily as a result of building urban highways and freeways. A study of a freeway under construction in Akron, OH illustrates some of these effects of highway-oriented transportation planning. This particular freeway, although only partially finished, has had numerous social, economic, environmental effects and if finished will have many more. Some of the effects have either tended to perpetuate or aggravate already existing problems, with the result that the overall quality of life has been impacted thereby

Calculating the Complex Permittivity of Powdered Crystalline Material at Infrared and Terahertz Frequencies

In this paper we calculate the complex permittivity of a crystalline material supported in a non-absorbing medium. To do this we have developed a software package, PDielec, which post processes solid state quantum mechanical and molecular mechanical calculations of the phonons and dielectric response of the crystalline material. Using an effective medium approximation, the package calculates the internal electric field arising from different particle morphologies and calculates the resulting shift in absorption frequency and intensity arising from the coupling between each phonon mode and the resultant internal field