Browsing Makale Koleksiyonu by Title
Now showing items 3338-3357 of 5745
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Light-scattering determination of visco-elastic and electro-optic parameters of azo and anthraquinone dye-doped liquid crystal molecules and consistent neural network empirical physical formula construction for scattering intensities
(ELSEVIER SCIENCE BV, 2011)In this paper, we achieved two aims. Firstly, laser light-scattering intensities in methyl red (MR) azo and disperse red (DR) anthraquinone dye-doped nematic liquid crystal (NLC) molecules were measured versus scattering ... -
Light-scattering experiments in dye-doped liquid crystals both to determine crystal parameters and to construct consistent neural network empirical physical formulas for scattering amplitudes
(ELSEVIER SCIENCE BV, 2011)The aim of this paper is two-fold. Firstly, static laser light-scattering amplitude measurements in azo-dye doped nematic liquid crystals (NLCs) were made versus scattering angle, temperature and applied bias voltage. Three ... -
Lightning-related Death
(GALENOS YAYINCILIK, 2012)Lightning is one of the reasons for death due to environmental disasters. Lightning-related deaths occur rarely in Sivas. This study aims to make the medico-legal evaluation of rare specific findings can be observed on ... -
Lightweight Geopolymer Made of Pumice with Various Aluminum Powder Ratios
(POLISH ACAD SCIENCES INST PHYSICS, 2017)In this work, a lightweight geopolymer was prepared using various mass proportions of extra fine aluminum powder and pumice stone that is durable to heat and sound-proof. The effect of NaOH concentration, aluminum mass ... -
A ligneous periodontitis and conjunctival lesions in a patient with plasminogen deficiency
(MOSBY-ELSEVIER, 2007)Destructive membranous periodontal disease is a rare and poorly defined entity that is a part of a systemic disease due to accumulation of fibrin material. The disease is characterized by gingival enlargement and periodontal ... -
The limits of the family Evaniidae (Insects : Hymenoptera) and a new genus from Lebanese Amber
(BRILL ACADEMIC PUBLISHERS, 2002)The definition of the family Evaniidae is revised and Cretevaniidae are synonymised with Evaniidae based on evidence derived from recently described Mesozoic taxa and a new genus and species, Lebanevania azari, described ... -
Limnological studies on the transboundary Turkish soda lake: Lake Aktaş
(2008)Lake Aktaş is a small, shallow, and turbid soda lake located between Turkey and Georgia. During the survey, conductivity, pH, dissolved oxygen, turbidity, NO3-N, NH4-N, TP, SRP, silicate, major anions (Cl-, SO4-, HCO-3, ... -
Linear and nonlinear intersubband optical absorption coefficient and refractive index change in n-type delta-doped GaAs structure
(ELSEVIER SCIENCE BV, 2013)In the effective mass approximation, we have theoretically investigated the subband structure of single Si delta-doped GaAs by solving the Schrodinger and Poisson equations self-consistently. Both the linear and nonlinear ... -
The linear and nonlinear intersubband optical absorption coefficients and refractive index changes in a V-shaped quantum well under the applied electric and magnetic fields
(ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD, 2011)In this study, the changes in the optical absorption coefficients and the refractive index in a V-shaped quantum well have investigated theoretically. Within the effective mass approximation, the electronic structure of ... -
Linear and nonlinear intersubband optical absorption coefficients and refractive index changes in symmetric double semi-V-shaped quantum wells
(ELSEVIER SCIENCE BV, 2012)In this study, the changes in the refractive index and intersubband optical absorption coefficients in symmetric double semi-V-shaped quantum wells are investigated theoretically. The energy levels and the envelope wave ... -
Linear and nonlinear optical absorption coefficients and refractive index changes in double parabolic-square quantum well as dependent on intense laser field
(SPRINGER HEIDELBERG, 2015)In this study, for double parabolic-square quantum well (DPSQW) the linear and nonlinear intersubband optical absorption coefficients and the refractive index changes are calculated as dependent on the intense laser field ... -
Linear and nonlinear optical absorption in different graded quantum wells modulated by intense laser field
(ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD, 2012)The laser field dependence of the linear and nonlinear intersubband optical absorption in different graded quantum wells (GQWs) is investigated in the effective mass approximation. Results obtained show that the position ... -
Linear and nonlinear optical properties in a double inverse parabolic quantum well under applied electric and magnetic fields
(ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD, 2014)In the present work, the effects of electric and magnetic fields on the optical absorption coefficient and refractive index changes associated with intersubband transitions in a GaAs/AlxGa1-xAs double inverse parabolic ... -
Linear and nonlinear optical properties in a semiconductor quantum well under intense laser radiation: Effects of applied electromagnetic fields
(ELSEVIER SCIENCE BV, 2012)In this work we are studying the intense laser effects on the electron-related linear and nonlinear optical properties in GaAs-Ga1-xAlxAs quantum wells under applied electric and magnetic fields. The calculated quantities ... -
Linear and nonlinear optical properties in an asymmetric double quantum well under intense laser field: Effects of applied electric and magnetic fields
(ELSEVIER SCIENCE BV, 2016)In the present study, the effects of electric and magnetic fields on the linear and third-order nonlinear optical absorption coefficients and relative change of the refractive index in asymmetric GaAs/GaAlAs double quantum ... -
Linear and nonlinear optical properties in asymmetric double semi-V-shaped quantum well
(ELSEVIER SCIENCE BV, 2015)In this present work, the effects of the structure parameters such as the right-well width and the rightbarrier height on the linear, third-order nonlinear and total absorption and refractive index changes of asymmetric ... -
Linear and nonlinear optical properties in the terahertz regime for multiple-step quantum wells under intense laser field: Electric and magnetic field effects
(ELSEVIER SCIENCE BV, 2018)We present a theoretical study on the linear and nonlinear optical properties in AlrGa1-rAs/GaAs asymmetric multiple step quantum wells (AMSQW) under the effects of a non-resonant intense laser field (ILF), electric, and ... -
Linear and nonlinear optical properties of asymmetric triple quantum wells under intense laser field
(IOP PUBLISHING LTD, 2019)For asymmetric triple quantum wells (ATQW) the linear and nonlinear optical absorption coefficient (OAC) and the optical refractive index change (ORIC) are analyzed according to the intense laser field (ILF). The obtained ... -
Linear and total intersubband transitions in the step-like GaAs/GaAlAs asymmetric quantum well as dependent on intense laser field
(SPRINGER HEIDELBERG, 2015)In this study, for a step-like GaAs-Ga1-xAlxAs asymmetric quantum well (AQW) the linear and total intersubband optical absorption coefficients and the refractive index changes are calculated as dependent on the intense ...