The effects of plasticization of poly(methyl methacrylate) glass on the boson peaks observed by Raman and neutron scattering are compared. In plasti-cized glass the cohesion heterogeneities are responsible for the neutron boson peak and partially for the Raman one, which is enhanced by the composition heterogeneities. Because the composition heterogeneities have a size similar to that of the co...

Separation and capture of carbon dioxide (CO2) has become a very hot topic discussion recently. The increasing amount in the environment makes environmental pollution significant. Membrane technology is one alternative separation processes that are increasingly demand, because membrane provides excellent advantages terms energy requirements used, capital investment invested, ease operating equi...

This paper presents the concept of metal expansion joints manufacturing using a mechanically assisted laserforming hybrid method. The are made tube an appropriate diameter and wall thickness with combined bellow-lens shape. assumes CO2 laser to implement such joints. beam heats selected area rotating tube, mounted on swivel handle one side actuator other end. After reaching plasticising tempera...