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In this work the dielectric response of three commonly used polymeric insulating materials, namely polyvinyl chloride (PVC), polytetrafluoroethylene (PTFE) and high-density polyethylene (HDPE), was measured after applying combined action of UV-radiation and condensation (humidity and heat) in an Accelerated Weathering Tester apparatus. Test samples were planar with a 2 mm thickness. For both aged...
Solar global irradiance received at a horizontal level on the earth varies significantly over short intervals due to diffuse radiation changes. Experimental data on global irradiance profiles received by fast data recording systems show that the global irradiance may be enhanced for a few minute periods by as much as 40%. The diffuse radiation is intensified by dry air mass formations, airborne nanoparticles,...
Preparation and characterization of CdSe thin film semiconductors, prepared by cathodic electrodeposition from an acid sulfate solution (CdSO4 - SeO2), were investigated. The effect of the bath temperature and how it affects the CdSe deposits was studied. The formation of compact barrier layers of zinc blende CdSe was attained. X-ray diffraction (XRD) and scanning electron microscopy (SEM) tests present...
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