Yayıncı "Pergamon-Elsevier Science Ltd" Fen Edebiyat Fakültesi için listeleme
Toplam kayıt 30, listelenen: 1-20
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Application of the H-N method to the critical slab problem for reflecting boundary conditions
(Pergamon-Elsevier Science Ltd, 2004)The recently developed H-N method is used to solve the critical slab problem for a slab which is surrounded by a reflector. In the special case: for R = 0 (the reflection coefficient) the problem reduces to the one under ... -
A certain subclass of analytic functions involving operators of fractional calculus
(Pergamon-Elsevier Science Ltd, 1998)Making use of certain operators of fractional calculus, we introduce a new class T-mu(n,lambda,alpha) of functions which are analytic and univalent in the open unit disk U and obtain a necessary and sufficient condition ... -
Chiral phosphine oxide aziridinyl phosphonate as a Lewis base catalyst for enantioselective allylsilane addition to aldehydes
(Pergamon-Elsevier Science Ltd, 2015)A series of chiral Lewis bases, phosphine oxide ferrocenyl aziridinyl methanol 1-4, phosphinyl aziridinyl phosphonates 5 and 6, and phosphine oxide aziridinyl phosphonates 7 and 8 were screened for allylsilane additions ... -
Comparison of fission barrier and level density models for (alpha,f) reaction of some heavy nuclei
(Pergamon-Elsevier Science Ltd, 2014)In this work, alpha induced fission reactions for some heavy nuclei (Th-232, U-235, U-238, Np-237 and Pu-238) are calculated based on both fission barrier models and level density models by using the TALYS 1.2 code. The ... -
Copper-catalyzed asymmetric conjugate addition of diethylzinc to substituted chalcones using a chiral phosphine ligand
(Pergamon-Elsevier Science Ltd, 2011)A series of chiral phosphine PFAM and phosphine oxide POFAM ligands were studied for the copper-catalyzed asymmetric diethylzinc addition to enones. One of these ligands, PFAM2, was an efficient catalyst with a variety of ... -
Coupled fixed point theorems for contractions in fuzzy metric spaces
(Pergamon-Elsevier Science Ltd, 2010)In the present work, we prove a coupled fixed point theorem for contractive mappings in complete fuzzy metric spaces. (C) 2009 Elsevier Ltd. All rights reserved. -
Determination of zinc, cadium, cobalt and nickel by flame atomic absorption spectrometry after preconcentration by poly(ethylene terephthalate) fibers grafted with methacrylic acid
(Pergamon-Elsevier Science Ltd, 2000)A method for the determination of Zn, Cd, Co and Ni by flame atomic absorption spectrophotometry after preconcentrating on poly(ethylene terephthalate) fibers grafted with methacrylic acid has been developed. The batch ... -
Effects of thermal and deformation on martensitic transformation and magnetic properties in Fe-17%Mn-4.5%X (X = Co and Mo) alloys
(Pergamon-Elsevier Science Ltd, 2017)In this study, the Co and Mo addition to Fe-Mn based alloys was investigated to observe its effect on martensitic phase transformation. Two types of martensite structure occurred from the surface observations made by SEM ... -
Electron paramagnetic resonance of gamma-irradiated single crystals of 3-nitroacetanilide
(Pergamon-Elsevier Science Ltd, 2008)The electron paramagnetic resonance of single crystals of 3-nitroacetanilide has been observed and analyzed for different orientations of the crystal in the magnetic field, after being damaged at 300 K by gamma-irradiation. ... -
Enhancing metacognitive awareness of undergraduates through using an e-educational video environment
(Pergamon-Elsevier Science Ltd, 2019)Video portfolios provide students with opportunities of self-monitoring, evaluating and reflecting on their own performance, and receiving feedback from others such as their peers and teachers. However, the literature was ... -
Equilibrium and pre-equilibrium calculations of neutron production in medium-heavy targets irradiated by protons up to 100 MeV
(Pergamon-Elsevier Science Ltd, 2008)In this study, by using equilibrium and pre-equilibrium reaction mechanisms, the (p,xn) cross-sections of the spallation neutron target nuclei Cr-50,Cr-52,Cr-53,Cr-54 and Cu-63,Cu-65 were investigated for incident proton ... -
Fixed point and common fixed point theorems on ordered cone metric spaces
(Pergamon-Elsevier Science Ltd, 2010)In the present work, some fixed point and common fixed point theorems for self-maps on ordered cone metric spaces, where the cone is not necessarily normal, are proved. (C) 2009 Elsevier Ltd. All rights reserved. -
A generalization of Szasz-Mirakyan operators based on q-integers
(Pergamon-Elsevier Science Ltd, 2008)In this paper, we introduce a generalization of Szasz-Mirakyan operators based on q-integers, that we call q-Szasz-Mirakyan operators. Depending on the selection of q, these operators are more flexible than the classical ... -
The HN method for half-space Albedo and constant source problems for isotropic and anisotropic scattering kernels
(Pergamon-Elsevier Science Ltd, 2007)The H-N method, which is developed recently, is used to solve the half-space albedo and the half-space constant source problems for both isotropic and extremely anisotropic scattering kernels. It has been shown that the ... -
Investigation of the nuclear structure of the Be, Cr and Cu isotopes
(Pergamon-Elsevier Science Ltd, 2009)The Root-Mean-Square (RMS) nuclear charge, neutron and proton radii, charge, neutron and proton densities, neutron skin thickness and total binding energy per particle were calculated using the Hartree-Fock method with ... -
Investigation of the properties of the nuclei used on the new generation reactor technology systems
(Pergamon-Elsevier Science Ltd, 2008)The main application fields of the fast neutrons are accelerator-driven subcritical systems (ADS) and fusion-fission (hybrid) reactor systems for fission energy production. Thorium (Th) and uranium (U) are nuclear fuels ... -
Level density parameter dependence of the fission cross sections of some subactinide nuclei induced by protons with the incident energy up to 250 MeV
(Pergamon-Elsevier Science Ltd, 2009)This study aims to show the dependence on the choice of the ratio of the level density parameters a(f) and a(n) corresponding to the saddle point of fission and equilibrium deformation of nucleus, respectively, of the ... -
Monte Carlo studies in accelerator-driven systems for transmutation of high-level nuclear waste
(Pergamon-Elsevier Science Ltd, 2008)A spallation neutron source was modeled using a high energy proton accelerator for transmutation of Pu-239, minor actinides Np-237, Am-241 and long-lived fission products Tc-99, I-129, which are created from the operation ... -
New calculation of excitation functions of proton-induced reactions in some medical isotopes of Cu, Zn and Ga
(Pergamon-Elsevier Science Ltd, 2007)The new calculations on the excitation functions of Ni-61(p,n)Cu-61, Ni-62(p,n)Cu-62, Ni-64(p,n)Cu-64, Cu-61(p,2n)Zn-62, Cu-63(p,n)Zn-63, Cu-65(p,n)Zn-65, Zn-66(p,n)Ga-66, Zn-67(p,2n)Ga-66, Zn-67(p,n)Ga-67 and Zn-68(p,n)Ga-68 ... -
A note on bi-periodic Fibonacci and Lucas quaternions
(Pergamon-Elsevier Science Ltd, 2016)Motivated by the our recent work in Tan et al., 2016, related to the bi-periodic Fibonacci quaternions, here we introduce the bi-periodic Lucas quaternions that gives the Lucas quaternions as a special case. We give the ...