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Öğe Öğe The effect of Eu-loading on the some physical features of CdO(Elsevier Sci Ltd, 2018) Turgut, G.; Aksoy, G.; Iskenderoglu, D.; Turgut, U.; Duman, S.The Eu-loaded CdO thin films were coated on the glass substrates with a sol-gel spin coating method by using Cd (CH3COO)(2)center dot H2O and EuCl3 center dot 6H(2)O salts. The effect of Eu-loading ratio varied from 0 to 4 at% in the step of 1 at% on the structural, morphological, electrical, and optical features of cadmium oxide had been evaluated with XRD, Raman study, SEM, AFM, Four Point Probe, and UV/VIS analysis. The coated films were polycrystalline with (111) preferential orientation and they had a cubic cadmium oxide structure. The granular-structure was observed from SEM and AFM images. The sizes of granules were in the range of 15-220 nm. It was observed that the homogeneity of granule distribution deteriorated with Eu-content. The RMS roughness value increased from 4.1nm to 284 nm with Eu-doping. The minimum sheet resistance was found to be 4.8 x 10(2) Omega for 2 at% Eucontent, but the maximum optical band gap was determined to be 2.61 eV for 1 at% Eu-content. The Urbach energy varied between 366 meV and 658 meV. As a result of this work, Eu-doping has an important effect on the properties of cadmium oxide.Öğe The influence of soft contact lenses on the intraocular pressure measurement(Nature Publishing Group, 2012) Firat, P. G.; Cankaya, C.; Doganay, S.; Cavdar, M.; Duman, S.; Ozsoy, E.; Koc, B.Purpose To evaluate the influence of silicone hydrogel contact lenses on the intraocular pressure (IOP) measurement using Goldmann applanation tonometry (GAT), non-contact tonometry (NCT), and Pascal dynamic contour tonometry (DCT). Methods We included in the study 40 eyes of 40 patients who did not have any ocular or systemic diseases or contraindications to contact lens use. We measured and recorded the IOP values of each patient using NCT without and with contact lenses (groups 1 and 2, respectively), using DCT without and with contact lenses (groups 3 and 4, respectively), and using GAT without contact lenses (group 5). Results The mean IOP value of group 1 was 14.55 +/- 2.95 mmHg and 13.92 +/- 2.58 mmHg in group 2. We detected no statistically significant difference between group 1 and group 2 (P = 0.053). The mean IOP values for group 3 and group 4 were 16.26 +/- 2.33 mmHg and 15.19 +/- 2.40 mmHg, respectively. We detected a statistically significant difference between groups 3 and 4 (P = 0.005). Group 5's mean IOP value was 12.97 +/- 2.65 mmHg. IOP values measured with DCT were statistically significantly higher compared with IOP values measured with NCT and GAT (P < 0.0001 and P < 0.0001, respectively). Additionally, IOP values measured with NCT were statistically significantly higher compared with IOP values measured with GAT (P < 0.0001). Conclusion According to the results of our study, silicone hydrogel soft contact lens use does not significantly affect IOP values measured with NCT, but it affects IOP values measured with DCT. Eye (2012) 26, 278-282; doi:10.1038/eye.2011.271; published online 11 November 2011Öğe Metaverse in paediatric dentistry(Springer, 2022) Duman, S.; Celik Ozen, D.; Duman, S. B.[Abstract Not Available]
