Başlık için Fen Edebiyat Fakültesi listeleme
Toplam kayıt 1429, listelenen: 1135-1154
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Shape-preserving properties of the limit q-Durrmeyer operator
(Elsevier, 2024)The present work aims to establish the shape-preserving properties of the limit q-Durrmeyer operator, Dq for 0<q<1. It has been proved that the operator is monotonicity- and convexity-preserving. What is more, it maps a ... -
Silorane-based composite: Depth of cure, surface hardness, degree of conversion, and cervical microleakage in class II cavities
(Wiley, 2011)Objective: The purpose of this study was to determine the depth of cure, degree of conversion (DC), hardness, and cervical sealing ability of silorane-based composite (Filtek Silorane [FS; 3M, Seefeld, Germany]) and to ... -
A simple and efficient synthesis of benzimidazoles containing piperazine or morpholine skeleton at C-6 position as glucosidase inhibitors with antioxidant activity
(Academic Press Inc Elsevier Science, 2018)A novel 2-(aryl)-6-morpholin-4-yl(or 4-methylpiperazin-1-yl)-1H-benzimidazole derivatives were designed and expeditiously synthesized starting from 5-morpholin-4-yl(or 4-methylpiperazin-1-yl)-2-nitroaniline with various ... -
A simple and efficient synthesis of novel inhibitors of alpha-glucosidase based on benzimidazole skeleton and molecular docking studies
(Academic Press Inc Elsevier Science, 2016)A novel series of benzimidazole derivatives were prepared starting from o-phenylenediamine and 4-nitro-o-phenylenediamine with iminoester hydrochlorides. Acidic proton in benzimidazole was exchanged with ethyl bromoacetate, ... -
A simple neuro-Heuristic computational intelligence algorithm for thin film flow equation arising in physical models
(Ieee, 2017)In this study, computational method are used for finding the approximation in the solution of thin film flow problem using stochastic solver like genetic algorithm (GA) and pattern search (PS). the mathematical model is ... -
A simplified neutrosophic multiplicative set-based TODIM using water-filling algorithm for the determination of weights
(Wiley, 2020)Due to the technological developments around the world, the amount of information that researchers work on increases continuously. This information density contains incomplete and uncertain data that cannot be fully expressed ... -
Simulation and efficiency studies of optical photon transportation and detection with plastic antineutrino detector modules
(Elsevier Science Bv, 2018)In this work, the simulation of optical photons is carried out in an antineutrino detector module consisting of a plastic scintillator connected to light guides and photomultipliers on both ends, which is considered to be ... -
Simultaneous separation and preconcentration of Cd(II), Co(II), and Ni(II) ions in environmental samples by carrier element-free coprecipitation method prior to their flame atomic absorption spectrometric determination
(Taylor & Francis Inc, 2015)In the present study, Cd(II), Co(II), and Ni(II) ions were separated and preconcentrated via carrier element-free coprecipitation (CEFC) method by using an organic coprecipitating agent, 1,2-bis-(2-tosyl ethoxy) benzene ... -
Single-molecule-resolution ultrafast near-field optical microscopy via plasmon lifetime extension
(AIP Publishing, 2021)Metal nanostructures support plasmon oscillations on their surfaces, which normally decay very quickly. Nevertheless, the lifetime of these oscillations can be extended near a longer lifetime particle, e.g., a molecule. ... -
Sipping tests for the irradiated fuel elements of the TR-2 research reactor
(Carl Hanser Verlag, 2011)Sipping tests have been performed for fuel elements of the TR-2 reactor at Çekmece Nuclear Research and Training Center (CNRTC), in order to find out which one failed in the core. A sipping assembly has been constructed ... -
The size effect on the magnetic levitation force of MgB2 bulk superconductors
(Elsevier Sci Ltd, 2016)In this study, the size effect on the magnetic levitation performance of disk-shaped MgB2 bulk superconductors and permanent magnets was investigated. MgB2 samples with varying diameters of 13 mm, 15 mm and 18 mm, each of ... -
A skeletochronological study of age, growth and longevity of Rana macrocnemis populations from four locations at different altitudes in Turkey
(Koninklijke Brill NV, 2011)We examined life-history traits such as population age structure, growth and longevity of Iranian Long-Legged frogs (Rana macrocnemis) from 4 different locations at different altitudes in Turkey by skeletochronology performed ... -
A skeletochronological study of the smooth newt Lissotriton vulgaris (Amphibia: Urodela) from an island and a mainland population in Turkey
(Taylor & Francis Ltd, 2014)To understand the effects of island and mainland on life history traits (e. g. longevity, age at maturity, body size and body mass) of the smooth newt Lissotriton vulgaris (Linnaeus, 1758), we generated data on age and ... -
Sm-doped CdS thin films prepared by spray pyrolysis: a structural, optical, and electrical examination
(Springer, 2018)Virgin and Sm-doped CdS thin films were prepared by spray pyrolysis route on glass substrates. the influences of Sm-doping amount on structural, topographical, optical and electrical properties were examined. It was found ... -
Sn diffusion coefficient and activation energy determined by way of XRD measurement and evaluation of micromechanical properties of Sn diffused YBa2Cu3O7-x superconducting ceramics
(Springer, 2013)This study manifests not only the effect of Sn diffusion on physical, electrical, mechanical, structural and superconducting properties of the bulk YBa2Cu3O7-x (Y123) superconductors prepared by the conventional solid-state ... -
Solution of a mixed problem with periodic boundary condition for a Quasi-linear Euler-Bernoulli equation
(Hacettepe University, 2010)In this paper, the existence and uniqueness of the weak generalized solution of a mixed problem with periodic boundary condition for a quasi-linear Euler-Bernoulli equation are examined, and an estimation of the differences ... -
Solvent free utilization and selective coupling of epichlorohydrin with carbon dioxide over zirconium metal-organic frameworks
(Elsevier Science Bv, 2017)Ui0 type zirconium metal-organic frameworks (MOFs) have been successfully applied to the synthesis of cyclic carbonates from CO2 and epoxides without using any solvent. All prepared MOFs are good catalysts for the cycloaddition ... -
Solvent-free synthesis of novel phthalocyanines containing triazole derivatives under microwave irradiation
(Pergamon-Elsevier Science Ltd, 2013)An efficient microwave processing method has been developed for the synthesis of novel metal-free phthalocyanine and metallophthalocyanines containing 1,2,4-triazole-3-one derivatives under microwave irradiation in ... -
Solvothermal synthesis and characterization of coordination polymers of cobalt(II) and zinc(II) with succinic acid
(Springer, 2012)The complexes [Co(C 4H 4O 4)] n (1) and [Zn(im)2- (C 4H 4O 4)] n (2) (C 4H 4O 4 = succinate dianion, suc; im = imidazole) have been synthesized solvothermally and characterized by elemental analysis, IR, TG-DTA, and ... -
Some azo compounds containing black tea processing waste catechins as antioxidant and urease enzyme inhibitory
(TUBİTAK Scientific & Technical Research Council Turkey, 2022)Although a lot of azo compounds containing some natural origin catechins had been synthesized and determined their dyeing properties for various textile products, the azo compounds containing black tea processing waste ...
