Performance of a salt gradient solar pond with reflective covered surface and derivation of analytic functions for air and soil temperatures for isparta region

6th International Conference of the Balkan-Physical-Union -- AUG 22-26, 2006 -- Istanbul, TURKEYWOS: 000246647900188In this study, salt gradient solar pond having a surface area of 3.5x3.5 m(2) and depth of 2 m has been constructed in Isparta/Turkiye and a computer software, capable of giving the temporal temperature variation at any point inside or outside a insulated solar pond at any time is presented. Hourly average values of air temperature and daily average soil temperature for the site were used as input parameters. These parameters have been calculated from analytical functions derived by using the hourly and daily temperature values for air and soil data obtained from the local meteorological station in Isparta region, respectively. The results obtained using analytic functions were in good agreement with the experimental results. Performance of the pond has been investigated theoretically and experimentally.Balkan Phys Union, Turkish Phys Soc, Istanbul Univ, Yildiz Tech Univ, Bogaz Univ, Dogus Univ, European Phys Soc, Govt Istanbul, Istanbul Metropolitan Municipal, Turkish Atomic Energy Author, Sci & Technol Res Council Turkey, United Natl Educ Sci & Cultutal Org, NEL Electroni

Characteristic Properties of Dy-Eu-Ag co-Doped TiO2 Nanoparticles Prepared by Electrospinning Processes

International Conference on Computational and Experimental Science and Engineering (ICCESEN) -- OCT 25-29, 2014 -- Antalya, TURKEYWOS: 000363011700088TiO2 with high photoactive wide band gap energy semiconductor has been studied intensively for its attractive applications as photo catalyst and solar cell. TiO2 has three kinds of different crystal structures; anatase, brookite and rutile. TiO2-nanoparticles could become valuable light emitting materials when they are doped with highly luminescent rare earth ions. In this study, Dy-Eu-Ag co-doped TiO2 nano particles were prepared by electrospinning method. The crystal structures of nanofibers were determined X-Ray Diffraction device (XRD), morphology of the samples were analyzed by scanning electron microscope (SEM), and the optical properties of the samples were determined by ultraviolet/visible spectrometer (UV/VIS) measurements. Electrical and electronic properties of the sampled were determined using the data obtained from four point prob technique (FPPT).Turkish Scientific and Technologic Research Council [TUBITAK] [110M344]; Afyon Kocatepe University [10.MUH.04]This work was supported by Turkish Scientific and Technologic Research Council [TUBITAK PROJECT-110M344] and Afyon Kocatepe University via Scientific Research Projects (No: 10.MUH.04