Makale Koleksiyonu: Recent submissions
Now showing items 781-800 of 5200
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Intersubband transitions in coupled triple-graded quantum wells under an electric field
(WILEY-V C H VERLAG GMBH, 2005)The intersubband transitions were calculated in three different shaped triple-graded quantum wells. The investigation involved changing the depth of the central well potential under an electric field applied parallel to ... -
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 absorption coefficient and electronic features of triple GaAlAs/GaAs and GaInAs/GaAs quantum wells depending on barrier widths
(ELSEVIER GMBH, 2019)In the present work, the effect of the barrier widths (BWs) on the linear and nonlinear optical absorption coefficient (OAC) and the electronic features of asymmetric triple Ga1-xAlxAs/GaAs (A structure) and Ga1-xInxAs/GaAs ... -
Comparison of the diagnosis of plain radiography ultrasonography and magnetic resonance imaging in early diagnosis of acute osteomyelitis experimentally formed on rabbits
(ELSEVIER IRELAND LTD, 2005)Purpose: We have compared the sensitivities of MRI, US and radiography which are some of the radiologic modalities used in the early diagnosis of acute osteomyelitis. Materials and methods: After 1 week care and research ... -
Uranyl ion binding properties of poly(hydroxamic acid) hydrogels
(SPRINGER-VERLAG, 2001)Poly(hydroxamic acid) (PHA) hydrogels, obtained from the synthesis of crosslinked poly(acrylamide) (PAAm) gels have been prepared, and their uranyl ion binding properties from two different sources were investigated. ... -
Adsorption of bovine serum albumin onto radiation-crosslinked poly(acrylamide/acrylic acid)
(MULTI SCIENCE PUBL CO LTD, 2004)Poly(acrylamide/acrylic acid) (AAm/AAc) hydrogels were prepared at initial acrylic acid compositions of 70, 80 and 85 mol%, respectively. Mixtures of AAm and AAc monomers were irradiated in a Co-60 gamma-ray source at a ... -
Magmatic processes and mixing origin of andesite: Miocene Karamagara volcanics, central Anatolia, Turkey
(WILEY-BLACKWELL, 2005)The Miocene Karamagara volcanics (KMV) crop out in the Saraykent region (Yozgat) of Central Anatolia. The KMV include four principal magmatic components based on their petrography and compositional features: basaltic ... -
Effect of the High-Frequency Laser Radiation on the Nonlinear Optical Properties of n-Type Double delta-Doped GaAs Quantum Wells
(AMER SCIENTIFIC PUBLISHERS, 2019)In the present work, the effect of non-resonant intense laser field on the nonlinear optical rectification and second and third harmonic generation of n-type double delta-doped GaAs quantum well is studied in detail. The ... -
Ocular Findings in Patients with Crimean-Congo Hemorrhagic Fever
(ELSEVIER SCIENCE INC, 2009)PURPOSE: To describe ocular findings of patients with Crimean-Congo hemorrhagic fever (CCHF). DESIGN: Prospective, interventional, consecutive case series. METHODS: This study was conducted in Sivas, a city located in the ... -
Neural network consistent empirical physical formula construction for neutron-gamma discrimination in gamma ray tracking
(PERGAMON-ELSEVIER SCIENCE LTD, 2013)Gamma ray tracking is an efficient detection technique in studying exotic nuclei which lies far from beta stability line. To achieve very powerful and extraordinary resolution ability, new detectors based on gamma ray ... -
Relationship between capillary angiogenesis, fiber type, and fiber size in chronic systemic hypoxia
(AMER PHYSIOLOGICAL SOC, 2001)Whether chronic hypoxia causes angiogenesis in skeletal muscle is controversial. Male Wistar rats, 5-6 wk of age, were kept at constant 12% O-2 for 3 wk, and frozen sections of their postural soleus (SOL), phasic extensor ... -
Theoretical investigation on the vibrational and electronic spectra of three isomeric forms of dicobalt octacarbonyl
(ELSEVIER SCIENCE BV, 2014)Three isomeric forms of dicobalt octacarbonyl, [Co-2(CO)(8)], with C-2v, D-3d and D-2d point group were optimized by using density functional theory (DFT/B3LYP) method with LANL2DZ basis set for the cobalt atoms and 6-31G(d) ... -
Existence of a solution of integral equations via fixed point theorem
(SPRINGEROPEN, 2013)In this paper, we establish a solution to the following integral equation: u(t) = integral(T)(0) G(t, s)f(s, u(s)) ds for all t is an element of [0,T], (1) where T > 0, f : [0, T] x R -> R and G : [0, T] x [0, T] -> [0, ... -
Effect of Surfactant Types on the Size of Tin Oxide Nanoparticles
(POLISH ACAD SCIENCES INST PHYSICS, 2017)In this study, tin oxide (SnO2) nanoparticles were synthesized by hydrothermal method in the presence of hydrazine and ammonia by adding surfactant for 12 h in a Teflon autoclave at 100 degrees C reaction temperature. ... -
Thermodynamics and Kinetics of Biosorption of Vanadium with Macrofungus (Hypholoma fasciculare) and Determination by GFAAS
(PERKIN-ELMER CORP, 2018)In the present study, a macrofungus, Hypholoma fasciculare (H. fasciculare), was employed for the biosorption of vanadium from aqueous solutions. The characterization of H. fasciatlare was conducted using the FT-IR and ... -
Effect of conjunctival structure and inflammatory cell counts on intraocular pressure after trabeculectomy
(KARGER, 1999)Purpose: To evaluate the conjunctival structure and inflammatory cell counts and to determine the predictive value of these histological parameters for postoperative intraocular pressure (IOP) levels after trabeculectomy. ... -
The Effect of Nutritional and Physical Activity Interventions on Nutritional Status and Obesity in Primary School Children: A Cluster Randomized Controlled Study
(KUWAIT MEDICAL ASSOC, 2017)Objectives: Obesity is a major public health problem, alarming especially among children and adolescents. The aim of this study is to measure the effect of intervention on preventing and reducing obesity by teaching healthy ... -
Monitoring students' goal setting and metacognitive knowledge in technology-enhanced learning with metacognitive prompts
(PERGAMON-ELSEVIER SCIENCE LTD, 2013)The purpose of this study is to analyse individual students' goal setting and metacognitive knowledge using the learning platform developed for the "Electricity in Our Lives" unit. A descriptive case study was applied in ... -
Treatment of pretreated coke wastewater by electrocoagulation and electrochemical peroxidation processes
(ELSEVIER SCIENCE BV, 2015)In this study, treatment of pretreated real coke wastewater by Electrocoagulation process (EC) and Electrochemical Peroxidation process (ECP) using direct pulse current was investigated. Air stripping process of ammonia ... -
Fatty acid composition of Oncorhynchus mykiss during embryogenesis and other developmental stages
(SPRINGER, 2006)Fatty acid compositions of rainbow trout Oncorhynchus mykiss (Walbaum, 1792) was determined during embryogenesis, yolk-sac fry, swim up fry and fry stages. Embryonic and yolk-sac development of fertilized eggs were followed ...