Güncel Gönderiler: Fizik Bölümü Koleksiyonu
Toplam kayıt 189, listelenen: 101-120
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Preparation and Characterization of Urea/Formaldehyde/Rosa Canina sp. Seeds Composites
(Polish Acad Sciences Inst Physics, 2014)Urea-formaldehyde (UF) resin which is one of the most important wood adhesives is a polymeric condensation product of the chemical reaction of formaldehyde with urea, and considered as the most important type of adhesive ... -
Synthesis and Characterization of Phenol/Urea/Formaldehyde and Clay Composites
(Polish Acad Sciences Inst Physics, 2014)Recently, so-called "phenol-formaldehyde-urea resins", which are generally made only by mechanical blending of UF resin and alkaline type PF resins, have been used as adhesives for the manufacturing of wood products. Faster ... -
Investigation of meta- and in-stability effects in hydrogenated microcrystalline silicon thin films by the steady-state measurement methods
(Canadian Science Publishing, Nrc Research Press, 2014)Metastability effects because of atmospheric exposure, high purity gasses, and deionized water in hydrogenated microcrystalline silicon thin films with different crystalline volume fractions were studied using well accepted ... -
Investigation of metastability and instability effects on the minority carrier transport properties of microcrystalline silicon thin films by using the steady-state photocarrier grating technique
(Canadian Science Publishing, Nrc Research Press, 2014)Metastability effects in hydrogenated microcrystalline silicon thin films due to air, high purity nitrogen, helium, argon, and oxygen were investigated using temperature-dependent dark conductivity, photoconductivity, and ... -
Reversible and irreversible effects after oxygen exposure in thick (> 1 mu m) silicon films deposited by VHF-PECVD on glass substrates investigated by dual beam photoconductivity
(Canadian Science Publishing, Nrc Research Press, 2014)Metastability and instability effects due to oxygen exposure in thick intrinsic hydrogenated microcrystalline silicon films deposited by very high frequency plasma enhanced chemical vapour deposition on smooth glass ... -
Atmospheric aging and light-induced degradation of amorphous and nanostructured silicon using photoconductivity and electron spin resonance
(Canadian Science Publishing, Nrc Research Press, 2014)Previous studies indicate that the dark conductivity in amorphous and microcrystalline silicon may increase or decrease with exposure to deionized water (DIW) or pure oxygen at 80 degrees C but always decreases with light ... -
Texture transformations and thermo-optical properties of nematic mesogen at nematic-isotropic liquid phase transition
(Elsevier, 2014)Study of the thermo-morfologic, thermotropic and thermo-optical properties of monomorphic nematic mesogen has been carried out. Temperature behavior of the mean the refractive index n, ordinary n(0) and extraordinary n(e) ... -
Structural, Electrical, and Magnetic Properties of High-Temperature-Sintered La1-xNaxMnO3 (0.05 <= x <= 0.35) Compounds
(Springer, 2015)The structural, electric, and magnetic properties of La1-xNaxMnO3 (0.05 <= x <= 0.35) compounds have been investigated. The compounds were prepared by a standard sol-gel method then sintered at 1400 degrees C for 24 h. The ... -
THERMOTROPIC, REFRACTING AND THERMO-OPTICAL PROPERTIES IN THREE HOMOLOGS OF 4-N-ALKYL-4 '-CYANOBIPHENYLS
(Lithuanian Physical Soc, 2015)Investigations of temperature behaviour of the mean refractive index n, ordinary n(o) and extraordinary n(e) refractive indices, and birefringence Delta n have been carried out for three homologues of 4-n-alkyl-4'-cyanobiphenyls ... -
PV outdoor tests and 12 years of Mugla experiences
(Wiley-V C H Verlag Gmbh, 2015)In this paper, the electricity yield of photovoltaic power plant applications in the main campus of Mugla Sitki Kocman University, Turkey is presented. There are four small scale grid connected photovoltaic power plants ... -
Multiple Energy Synchrotron Biomedical Imaging System- Preliminary Results
(Springer Int Publishing Ag, 2015)The drive to improve and expand the amount of information extracted from various imaging modalities has led to the use of multiple (usually two) x-ray photon energies in computed tomography clinical systems. With the use ... -
Phase formation characteristics and magnetic properties of bulk Ni2MnGe Heusler alloy
(Elsevier Science Sa, 2015)We have systemically studied the effects of annealing temperature and alloy composition on the structural and magnetic properties of bulk Ni2MnGe and Ni2.1Mn0.9Ge Heusler alloys. We have observed that both annealing ... -
Magnetic properties of La0.65Ca0.30Pb0.05Mn0.9B0.1O3 (B = Co, Ni, Cu and Zn)
(Elsevier Science Sa, 2015)The La0.65Ca0.30Pb0.05Mn0.9B0.1O3 (A = Co, Ni, Cu and Zn) manganites have been prepared via sol-gel method and sintered at 1100 degrees C for 24 h. The aim of the study was to investigate B-site cation doping effects on ... -
Anchoring transitions in nematic-discotic lyotropic mesophase under magnetic field
(Natl Inst Optoelectronics, 2015)Magneto-morphologic and orientational properties of the lyotropic nematic-discotic N-D mesophase have been studied by the polarizing optical microscopy technique. Texture transformations from the schlieren texture to the ... -
Investigation of Thermal Properties of PUF/colored Organoclay Nanocomposites
(Polish Acad Sciences Inst Physics, 2015)Recently PF resins can be also prepared by the addition of urea because urea accelerates cure process of PF resin, reduces the cost and improves its strength performance. Clays have long been used as inorganic fillers in ... -
Study of mesomorphism, thermotropic properties and pitch in new chiral smectogenic imine compounds
(Elsevier, 2015)We report the thermotropic, thermo-morphologic and structural properties of four homologs of (S)-5-alkyloxy-2-[{4-(2-methylbutoxy)phenylimino}methyl]phenol liquid crystalline salicylaldimine compounds, which are firstly ... -
A different approach to solar cell simulation
(Pergamon-Elsevier Science Ltd, 2015)Zero barrier height inhomogeneity in the device is generally assumed to conform to Gaussian distribution in the literature. In this study, zero barrier height inhomogeneity has been adopted to obey random distribution. ... -
Temperature dependent symmetry to asymmetry transition in wide quantum wells
(Elsevier, 2015)Quasi-two dimensional electron systems exhibit peculiar transport effects depending on their density profiles and temperature. A usual two dimensional electron system is assumed to have a 6 like density distribution along ... -
Comparative investigations of the thermotropic and optical refractive properties in micellar isotropic phase and nematic-calamitic mesophase of hexadecyltrimethyl ammonium bromide/water and hexadecyltrimethyl ammonium bromide/water/1-decanol lyotropic liquid crystalline systems
(Springer, 2015)We report the thermotropic properties and measurements of the temperature and concentration dependences of the refractive index in isotropic micellar L (1) phase and nematic-calamitic N (C) mesophase of the hexadecyltrimethyl ... -
Shading effect on the energy rating of two identical PV systems on a building facade
(Pergamon-Elsevier Science Ltd, 2015)The first BIPV system of Turkey was installed on the facade and two towers of the Staff's Block of Education Faculty building of Mugla Sitki Kocman University in February 2008. The PV systems cover 405 m(2) (60 tilted ...
