Güncel Gönderiler: Fen Fakültesi
Toplam kayıt 1146, listelenen: 661-680
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In vitro antioxidant, anticholinesterase and antimicrobial activity studies on three Agaricus species with fatty acid compositions and iron contents: A comparative study on the three most edible mushrooms
(Pergamon-Elsevier Science Ltd, 2011)The fatty acids of Agaricus essettei, Agaricus bitorquis and Agaricus bisporus were investigated by using GC and GC-MS. The dominant fatty acids were found to be linoleic (61.82-67.29%) and palmitic (12.67-14.71%) acids ... -
High resolution short focal distance Bent Crystal Laue Analyzer for copper K edge x-ray absorption spectroscopy
(Amer Inst Physics, 2011)We have developed a compact short focal distance Bent Crystal Laue Analyzer (BCLA) for Cu speciation studies of biological systems with specific applications to cancer biology. The system provides high energy resolution ... -
Synthesis and Spectroscopic Properties of a Novel Perylenediimide Derivative
(Chem Soc Pakistan, 2011)A novel symmetric 3,4,9,10-perylenetetracarboxylic acid derivative (PDI1) dye based on thiophene donor group was synthesized and characterized by FT-IR and H-1 NMR. Cyclic Voltammetry analysis is performed to determine the ... -
A collocation method using Hermite polynomials for approximate solution of pantograph equations
(Pergamon-Elsevier Science Ltd, 2011)In this paper, a numerical method based on polynomial approximation, using Hermite polynomial basis, to obtain the approximate solution of generalized pantograph equations with variable coefficients is presented. The ... -
Screening of the antioxidant, antimicrobial and DNA damage protection potentials of the aqueous extract of Asplenium ceterach DC
(Academic Journals, 2011)In this study, in vitro antioxidant, antimicrobial and DNA damage protection potentials of the aqueous extract of Asplenium ceterach was firstly evaluated in addition to its total phenolic and flavonoid contents. Antioxidant ... -
Highly Soluble Polyoxyethylene-Perylene diimide: Optical, Electrochemical and Photovoltaic Studies
(Chem Soc Pakistan, 2011)The synthesis and optical properties of a new dye molecule [PERKAT] were reported. The molecular structure of PERKAT was characterized by FT-IR and H-1 NMR. Optical properties of PERKAT were investigated by UV-Vis absorption, ... -
Determination of Mercury, Cadmium, Lead, Zinc, Selenium and Iron by ICP-OES in Mushroom Samples from Around Thermal Power Plant in Mugla, Turkey
(Springer, 2011)Scleroderma verrucosum, Stropharia coronilla, Lactarius deterrimus, Chroogomphus rutilus, Russula delica, Laccaria laccata, Clitocybe odora var. alba, Lyophyllum decastes, Coprinus comatus, Helvella leucomelaena, Melanoleuca ... -
Novel chitosan-poly(N,n-dimethylaminoethyl methacrylate) semi-IPN gels: the synthesis and the antibacterial activities
(Current Biology Ltd, 2011) -
Biochemistry of volatile compounds during the processing of table olives
(Current Biology Ltd, 2011) -
Metal concentration of wild edible mushrooms in Soguksu National Park in Turkey
(Elsevier Sci Ltd, 2011)Twelve varieties of fruiting bodies of wild edible mushrooms collected in 2002 from Soguksu National Park, Ankara, Turkey were analysed for Pb, Cd, Zn, Fe, Mn, Cu, Cr, Ni, and Co contents by inductively coupled plasma ... -
Non-isotropic angular distribution of Yb L alpha(1) and L alpha(2) lines following photoionization by linearly polarized radiation
(Iop Publishing Ltd, 2011)The angular distribution of Yb L alpha(1) and L alpha(2) lines after photoionization by a linearly polarized monochromatic photon beam from synchrotron radiation has been measured. The experiment was performed using a 5 x ... -
A Chebyshev Polynomial Approach for High-Order Linear Fredholm-Volterra Integro-Differential Equations
(Gazi Univ, 2012)The purpose of this study is to present a method for solving high order linear Fredholm-Volterra integrodifferential equations in terms of Chebyshev polynomials under the mixed conditions. The method is based on the ... -
Biocentri-voltammetry for the enzyme assay: a model study
(Royal Soc Chemistry, 2012)This work constitutes the first biocentri-voltammetric application for acetylcholinesterase (AChE) activity assay. After the optimization of working conditions like reaction time, centrifugation speed and time and enzyme ... -
Event-Oriented, Model-Based GUI Testing and Reliability Assessment-Approach and Case Study
(Elsevier Academic Press Inc, 2012)It is widely accepted that graphical user interfaces (GUIs) highly affect-positive or negative-the quality and reliability of human-machine systems. However, quantitative assessment of the reliability of GUIs is a relatively ... -
Conduction Mechanism of an Infrared Emitting Diode: Impedance Spectroscopy and Current-Voltage Analysis
(Maik Nauka/Interperiodica/Springer, 2012)The bias dependent complex impedance spectra of a conventional GaAs based infrared emitting diode have been studied in the temperature range 150-300 K. It is found that for bias voltages lower than 0.7 V, the device behaves ... -
The visibility of IQHE at sharp edges: experimental proposals based on interactions and edge electrostatics
(Iop Publishing Ltd, 2012)The influence of the incompressible strips on the integer quantized Hall effect (IQHE) is investigated, considering a cleaved-edge overgrown (CEO) sample as an experimentally realizable sharp edge system. We propose a set ... -
The effect of disorder on integer quantized Hall effect
(Elsevier, 2012)We study the effects of disorder on the integer quantized Hall effect within the screening theory, systematically. The disorder potential is analyzed considering the range of the potential fluctuations. The short-range ... -
Screening theory based modeling of the quantum Hall based quasi-particle interferometers, defined at quantum dots
(Elsevier Science Bv, 2012)In this work, we investigate the spatial distributions and the widths of the incompressible strips, i.e. the edge-states. The incompressible strips that correspond to nu = 1,2 and 1/3 filling factors are examined in the ... -
Perylene Monolayer Protected Gold Nanorods: Unique Optical, Electronic Properties and Self-Assemblies
(Amer Chemical Soc, 2012)Here we report the synthesis and characterization of organosoluble perylene monolayer protected gold nanorods. From H-1 NMR, FT-IR, and differential scanning calorimetry experiments, the successful thiol exchange and ... -
A Bessel collocation method for numerical solution of generalized pantograph equations
(Wiley, 2012)This article is concerned with a generalization of a functional differential equation known as the pantograph equation which contains a linear functional argument. In this article, we introduce a collocation method based ...
