Güncel Gönderiler: Fen Edebiyat Fakültesi
Toplam kayıt 2923, listelenen: 741-760
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Some fixed-circle theorems on metric spaces
(Malaysian Mathematical Sciences Soc, 2019)The fixed-point theory and its applications to various areas of science are well known. In this paper, we present some existence and uniqueness theorems for fixed circles of self-mappings on metric spaces with geometric ... -
Solid phase extraction and preconcentration of some metal ions using Schiff base immobilised silica gel followed by ICP-OES
(Taylor and Francis Ltd, 2019)In this study, a simple and efficient solid phase extraction procedure was developed for simultaneous separation and preconcentration of Ba, Cd, Co, Cu, Mn and Ni. The methodology was based on preconcentration of the target ... -
Seasonal dynamics of the zooplankton community in the temperate eutrophic Çaygören reservoir (Balıkesir), Turkey related to certain physicochemical parameters of water
(Central Fisheries Research Inst, 2019)Seasonal dynamics in the zooplankton community and its relationships with certain physicochemical parameters (water temperature, Secchi disk transparency, conductivity, nitrate-nitrogen (NO3-N), phosphate (PO4), pH, ... -
Rotation speed induced properties of quaternary FeNiCrCd thin films easy-prepared from a single magnetron sputtering
(Natl Inst Optoelectronics, 2019)A series of quaternary FeNiCrCd thin films were sputtered on commercial flexible acetate substrates from Fe51.07Ni13.42Cr12 Cd-.67(22).74 (at.%) source under the rotation speed (0, 15, 30 and 45 rpm) of the substrates. The ... -
Proposing an agricultural belt to protect a city's semi-rural characteristics: The example of Bartin, Turkey
(Routledge Journals, 2019)Urban sprawl, a type of urban expansion, is perceived as a global problem due to changes in land conversions and landscape patterns. Farms, forests and shores have been converted into urban areas; this transformation affects ... -
Prodrugs for nitroreductase based cancer therapy-2: Novel amide/Ntr combinations targeting PC3 cancer cells
(Elsevier France-Editions Scientifiques Medicales Elsevier, 2019)The use of nitroreductases (NTR) that catalyze the reduction of nitro compounds by using NAD(P)H in GDEPT (Gene-directed enzyme prodrug therapy) studies which minimize toxicity at healthy cells and increases concentration ... -
Organic vapor sensing properties and characterization of alpha-naphthylmethacrylate LB thin films
(Taylor and Francis Inc, 2019)Determination of organic vapor sensing properties of alpha-Naphthylmethacrylate (alpha-NMA) monomer based Langmuir-Blodgett (LB) thin films was aimed in this study. LB thin film fabrication was performed on quartz glass ... -
On cosymplectic-like statistical submersions
(Springer Basel AG, 2019)We study cosymplectic-like statistical submersions. It is shown that for a cosymplectic-like statistical submersion, the base space is a Kahler-like statistical manifold and each fiber is a cosymplectic-like statistical ... -
New fixed-point theorems on an S-metric space via simulation functions
(MDPI, 2019)In this paper, we prove new fixed-point theorems using the set of simulation functions on an S-metric space with some illustrative examples. Our results are stronger than some known fixed-point results. Furthermore, we ... -
Methodological and theoretical approaches to material culture in folklore
(Milli Folklor Dergisi, 2019)Material culture, centered on objects to understand social and cultural relations of societies, focuses on what objects are made of, what methods and technics are used in the making and who makes them. Through objects, ... -
Magnetic nanocomposites decorated on multiwalled carbon nanotube for removal of Maxilon Blue 5G using the sono-Fenton method
(Nature Publishing Group, 2019)Herein, multiwalled carbon nanotube-based Fe3O4 nano-adsorbents (Fe3O4@MWCNT) were synthesized by ultrasonic reduction method. The synthesized nano-adsorbent (Fe3O4@MWCNT) exhibited efficient sonocatalytic activity to ... -
ESR spectroscopic investigation of gamma-irradiated lithium trifluoromethanesulfonate
(Taylor and Francis Ltd, 2019)The effect of gamma radiation on lithium trifluoromethanesulfonate (LiTf) was investigated in detail using electron spin resonance (ESR) spectroscopy. The experimental spectra consisted of complex overlapped signals. ... -
Equilibrium, kinetics, and thermodynamic of adsorption of enzymes on diatomite clay materials
(Springer, 2019)In adsorption experiments, enzymes and diatomite clay minerals that have been used lately are of great importance due to their biological and physicochemical properties. For this purpose, in this study, the adsorption and ... -
Emulsification liquid-liquid microextraction method based on a deep eutectic solvent for separation and preconcentration of lead from environmental water samples
(Iwa Publishing, 2019)In this paper, a novel emulsification liquid-liquid microextraction method based on deep eutectic solvents (DESs) for the preconcentration of lead from water samples and its determination by flame atomic absorption ... -
Direct theorems of trigonometric approximation for variable exponent Lebesgue spaces
(Union Matematica Argentina, 2019)Jackson type direct theorems are considered in variable exponent Lebesgue spaces L-p(x) with exponent p(x) satisfying 1 <= ess inf(x is an element of[0,2 pi]) p(x), ess sup(x is an element of[0,2 pi]) p(x) < infinity, and ... -
Development of carbazole-bearing pyridopyrimidine-substituted urea/thiourea as polyphenol oxidase inhibitors: synthesis, biochemistry, and theoretical studies
(Taylor and Francis Ltd, 2019)Polyphenol oxidase (Tyrosinase, PPO) has received considerable attention, since it is the key enzyme in melanin biosynthesis. In this study, we investigated prepared novel carbazole-containing pyridopyrimidine-substituted ... -
C-parallel and c-proper slant curves of S-manifolds
(Univ Nis, 2019)In the present paper, we define and study C-parallel and C-proper slant curves of S-manifolds. We prove that a slant curve gamma in an S-manifold of order r >= 3, under certain conditions, is C-parallel or C-parallel in ... -
Complete rewriting system and growth series for extended generalized hecke groups
(Islamic Azad Univ, 2019)In this paper, we obtain a complete rewriting system for monoid presentation of generalized extended Hecke group (H) over bar (p,q), which is firstly defined in [8]. It gives an algorithm for getting normal form of elements ... -
Chen inequalities for statistical submanifolds of Kahler-Like statistical manifolds
(MDPI, 2019)We consider Kahler-like statistical manifolds, whose curvature tensor field satisfies a natural condition. For their statistical submanifolds, we prove a Chen first inequality and a Chen inequality for the invariant delta(2,2). -
Approximation by nonlinear fourier basis in generalized holder spaces
(Yildiz Technical Univ, 2019)In this paper, the value of deviation of a function f from its nth generalized de la Vallee-Poussin mean V-n(alpha)(lambda, f) with respect to the nonlinear trigonometric system is estimated for the classes of 2 pi-periodic ...
