Güncel Gönderiler: Fen Edebiyat Fakültesi
Toplam kayıt 731, listelenen: 261-280
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Removal of Carcinogenic Azo Dyes from Water by New Cyclodextrin-Immobilized Iron Oxide Magnetic Nanoparticles
(Springer, 2013)In this study, beta-cyclodextrin was functionalized with [3-(2,3-epoxypropoxy)propyl] trimethoxysilane to obtain a new silica-based beta-cyclodextrin in order to provide a binding side for immobilization onto iron oxide ... -
Optoelectronic investigation of Cu2FeSnS4 quaternary functional photodiodes with IR detection capabilities
(Elsevier, 2021)Cu2FeSnS4 semiconductor used in the preparation of quaternary photodiodes was synthesized using hydrothermal synthesis. The nanoparticles were then spin coated on a silicon substrate. Nanoparticles were characterized using ... -
Photoelectrical properties of solar sensitive CuO doped carbon photodiodes
(Elsevier, 2020)The CuO doped carbon thin films were produced by using electrochemical deposition and the surface characteristics of the photodiodes were investigated using the scanning electron microscopy and infrared (IR) spectroscopy. ... -
MATHEMATICAL MODELING OF COVID-19 PHENOMENON; THE CASES: GERMANY, ISRAEL AND CANADA
(Parlar Scientific Publications (P S P), 2020)Epidemic diseases are described as a pandemic that affects the enormous majority of the world, spreads rapidly among people, and causes deaths. Negative effects, the number of casualties, rates of spread, and the duration ... -
Significant role of the specific prime number p = 257 in the improvement of cryptosystems
(Bulgarian Acad Science, 2020)Cryptology is the significant science which is inseparable from the means of communication of secrets. In a safe manner, it has the main objective of transmitting (potentially sensitive) information between two interlocutors. ... -
Impact of the Covid-19 pandemic on perinatal mental health (Riseup-PPD-COVID-19): protocol for an international prospective cohort study
(Bmc, 2021)BackgroundCorona Virus Disease 19 (COVID-19) is a new pandemic, declared a public health emergency by the World Health Organization, which could have negative consequences for pregnant and postpartum women. The scarce ... -
Novel water soluble 7-oxy-4-(pyridine-3-yl) coumarin substituted phthalocyanines as potential photosensitizers for photodynamic therapy
(Elsevier Science Sa, 2019)The new phthalonitriles (1 and 2) and zinc, indium, magnesium metalled tetrasubstituted phthalocyanines bearing 7-oxy-4-(pyridine-3-yl) coumarin substituents in the peripheral (1a-c)/non-peripheral (2a-c) positions were ... -
Photophysical, photochemical and BSA binding/BQ quenching properties of quaternizable coumarin containing water soluble zinc phthalocyanine complexes
(Pergamon-Elsevier Science Ltd, 2011)The non-peripherally (np-QZnPc) and peripherally (p-QZnPc) tetrakis-[7-oxo-(3-[(2-diethylaminomethyliodide)ethyl)]-4-methylcoumarin]-Phthalocyaninatozinc complexes have been prepared by quaternization of non-peripherally ... -
Synthesis and electrochemical properties of crown ether functionalized coumarin substituted cobalt and copper phthalocyanines
(Elsevier Science Sa, 2011)The synthesis of novel 6,7-[15-crown-5]-3-[p-(3,4-dicyanophenoxy)phenyl]coumarin (1)/6,7-[15-crown-5]-3-[p-(2,3-dicyanophenoxy)phenyl]coumarin (2) and their peripherally/non-peripherally cobalt and copper phthalocyanine ... -
Chromenone 12-crown-4 substituted zinc phthalocyanine complexes: Investigation of spectral, photophysical and photochemical properties
(Pergamon-Elsevier Science Ltd, 2011)The synthesis of novel 6,7-[(12-crown-4)-3-[p-(3,4-dicyanophenoxy)phenyl]coumarin (1), 6,7-[(12-crown-4)-3-[p-(2,3-dicyanophenoxy)phenyl]coumarin (2), and their corresponding tetra-(chromenone 12-crown-4)-substituted zinc ... -
Synthesis and properties of crown ether functionalized coumarin substituted zinc phthalocyanine
(Pergamon-Elsevier Science Ltd, 2011)The novel 6,7-[15-crown-5]-3-[p-(2,3-dicyanophenoxy)phenyl]coumarin (1) and its non-peripherally substituted zinc phthalocyanine complex (2) have been prepared and characterized by elemental analysis, H-1 NMR (for compound ... -
Synthesis and characterization of metallo phthalocyanines bearing 7-oxy-3-(4-pyridyl)coumarin substituents and their supramolecular structures with vanadyl bis(acetylacetonate)
(Pergamon-Elsevier Science Ltd, 2012)The synthesis of novel zinc and cobalt metallo phthalocyanines with four 7-oxy-3-(4-pyridyl)coumarin dye groups on the periphery/non-periphery were prepared by cyclotetramerization of 7-(3,4-dicyanophenoxy)-3-(4-pyridyl)coumarin ... -
Tetrasubstituted copper phthalocyanines: Correlation between liquid crystalline properties, films alignment and sensing properties
(Elsevier Science Sa, 2017)Copper phthalocyanines (CuPc) containing alkylthio (-S(CH2)(n)CH3, n = 7 and 15), alkyloxy- (-O(CH2)(n)CH3, n = 7 and 15) and polyoxo [-O(CH2CH2O)(3)CH3 and S(CH2CH2O)(3)CH3] substituents were synthesized and investigated ... -
Synthesis, characterization, and swelling behavior of poly(N-hydroxymethylacrylamide) grafted poly(vinyl alcohol)
(Wiley, 2020)In this study, the graft copolymerization of N-hydroxymethylacrylamide (NHMAAm) with poly(vinyl alcohol) (PVA) was carried out by using potassium persulfate/N,N,N,N-tetramethylethylenediamine (K2S2O8) to improve physicochemical ... -
A Note on the Structure of Certain Real Quadratic Number Fields
(Springer International Publishing Ag, 2017)The aim of this paper is to determine the general forms of the continued fraction expansions of the quadratic irrational number w(d) which is integral basis element of Z [1+root d/2] also determine t(d); u(d) which are the ... -
Some results on a special type of real quadratic fields
(Karaganda State Univ, 2019)In this paper, we determine the real quadratic fields Q(root d) coincide with positive square-free integers d including the continued fraction expanison form of w(d) - [a(0);7,7,...7,a(l)/l-1]. Furthermore, we deal with ... -
Some new Hermite-Hadamard type inequalities for s-convex functions and their applications
(Springeropen, 2019)In this paper, we establish some new integral inequalities of Hermite-Hadamard type for s-convex functions by using the Holder-iscan integral inequality. We also compare our new results with the known results and show that ... -
HERMITE-HADAMARD TYPE INEQUALITIES FOR m-CONVEX AND (alpha, m)-CONVEX STOCHASTIC PROCESSES
(Etamaths Publ, 2019)In this paper, the concepts of m-convex and (alpha, m)-convex stochastic processes are introduced. Several new inequalities of Hermite-Hadamard type for differentiable m-convex and (alpha, m)-convex stochastic processes ... -
Analytical exact solutions for the Razavy type potential
(Wiley, 2020)A quantum system with Razavy type potential which transforms to single or double well potential according to negative or positive potential parameterk, is solved analytically by using extended form of Nikiforov-Uvarov (NU) ... -
Determination of the Some Results for Coupled Fixed Point Theory in C*- Algebra Valued Metric Spaces
(Indonesian Mathematical Soc, 2020)In the present paper, we introduce the coupled fixed point theorem in C*-algebra valued metric spaces. We get a C*-algebra valued metric space which get values in noncomutative operators. We demonstrate existance and ...
