Yayıncı "Pergamon-Elsevier Science Ltd" Fen Fakültesi için listeleme
Toplam kayıt 36, listelenen: 1-20
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Antimicrobial and antioxidant activities of Russula delica Fr.
(Pergamon-Elsevier Science Ltd, 2009)Russula delica Fr. is a well known macrofungi which is used as a food in Turkey. The ethanolic extract of R. delica exhibited antimicrobial activity against some of the tested foodborne and spoilage bacteria. The phenolic ... -
Antioxidant activities, metal contents, total phenolics and flavonoids of seven Morchella species
(Pergamon-Elsevier Science Ltd, 2009)Seven Morchella species were analyzed for their antioxidant activities in different test systems namely beta-carotene/linoleic acid, DPPH, reducing power, chelating effect and scavenging effect (%) on the stable ABTS(center ... -
Application of Centri-voltammetry to Cytosensors: Cyto-centrivoltammetry
(Pergamon-Elsevier Science Ltd, 2016)In this work, a centri-voltammetric cytosensor suitable for the for detection of folate receptor positive cervical cancer (HeLa) cells was developed for the first time. In order to see the effect of centrifugation, developed ... -
Chemical composition of the essential oil and hexane extract of Salvia chionantha and their antioxidant and anticholinesterase activities
(Pergamon-Elsevier Science Ltd, 2010)The essential oil and methyl ester of hexane extract of Salvia chionantha Boiss. were analysed by GC and GC-MS. Totally, 54 components were detected in the essential oil and all of them were fully determined. Germacrene D ... -
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 ... -
The combined effects of gibberellic acid and salinity on some antioxidant enzyme activities, plant growth parameters and nutritional status in maize plants
(Pergamon-Elsevier Science Ltd, 2008)The combined effects of salt stress and gibberellic acid (GA(3)) on plant growth and nutritional status of maize (Zea mays L. cv., DK 647 Fl) were studied in a pot experiment. Treatments were (1) control (Q: nutrient ... -
A comparison of the effect of CdCl2 and MgCl2 processing on the transport properties of n-CdS/p-CdTe solar cells and a simple approach to determine their back contact barrier height
(Pergamon-Elsevier Science Ltd, 2016)A simple approach, which can estimate the barrier height of non-Ohmic back contacts for CdS/CdTe solar cell by using its temperature dependent forward biased current-voltage data, is explained. The method involves modelling ... -
Derivation of an efficiency-calibration simulation for a well-type HPGe detector using the Monte Carlo approach and analytical techniques
(Pergamon-Elsevier Science Ltd, 2015)Simulation is a simple method that allows for facile estimation of a detector response function when the specifications of the investigated sample and the sample-detector geometry are known. In this study, the dependence ... -
A different approach to solar cell simulation
(Pergamon-Elsevier Science Ltd, 2015)Zero barrier height inhomogeneity in the device is generally assumed to conform to Gaussian distribution in the literature. In this study, zero barrier height inhomogeneity has been adopted to obey random distribution. ... -
The effects of calcium sulphate on growth, membrane stability and nutrient uptake of tomato plants grown under salt stress
(Pergamon-Elsevier Science Ltd, 2007)A pot experiment was carried out with tomato (Lycopersicon esculentum Mill.) cv. "Target F1" in a mixture of peat, perlite, and sand (1:1: 1) to investigate the effects of supplementary calcium sulphate on plants grown at ... -
Evaluation of metal concentration and antioxidant activity of three edible mushrooms from Mugla, Turkey
(Pergamon-Elsevier Science Ltd, 2010)This study is designed for the determination of metal concentrations, antioxidant activity potentials and total phenolics of Amanita caesarea, Clitocybe geotropa and Leucoagaricus pudicus. Concentrations of four heavy ... -
Forward and reverse current-voltage-temperature characteristics of a typical BPW34 photodiode
(Pergamon-Elsevier Science Ltd, 2006)The dark forward and reverse current-voltage characteristics of a typical BPW34 silicon photodiode have been investigated in the temperature range 80-300 K. We propose that tunnelling enhanced recombination at or close to ... -
Improved salt tolerance of melon (Cucumis melo L.) by the addition of proline and potassium nitrate
(Pergamon-Elsevier Science Ltd, 2007)A pot experiment was carried out under glasshouse conditions with melon (Cucumis melo) cv. "Tempo F1" in a mixture of peat, perlite and sand (1:1:1) to investigate the effects of external proline and potassium nitrate ... -
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 ... -
Investigation of datasheet provided temperature coefficients of photovoltaic modules under various sky profiles at the field by applying a new validation procedure
(Pergamon-Elsevier Science Ltd, 2020)In this study, datasheet provided temperature coefficients of commercially available photovoltaic modules were investigated by taking into account the actual performance parameters (output peak power, short-circuit current ... -
Lattice vibrations of pure and doped GaSe
(Pergamon-Elsevier Science Ltd, 2006)The Bridgman method is used to grow especially undoped and doped single crystals of GaSe. Composition and impurity content of the grown crystals were determined using X-ray fluorescence (XRF) method. X-ray diffraction, ... -
Metal complexes and solvent extraction properties of isonitrosoacetophenone 2-aminobenzoylhydrazone
(Pergamon-Elsevier Science Ltd, 2006)Three types of copper complexes as well as an oximate-bridged nickel complex with isonitrosoacetophenone 2-aminobenzoylhydrazone (H2L) have been prepared in ethanolic solution and characterized by elemental analyses, IR, ... -
New method for computing single diode model parameters of photovoltaic modules
(Pergamon-Elsevier Science Ltd, 2018)The objective of this paper is to calculate the single diode model parameters (A, R-s, R-sh, I-L, and I-0) of photovoltaic modules in most straightforward way no using iterative techniques and an additional information of ... -
A new method to simulate photovoltaic performance of crystalline silicon photovoltaic modules based on datasheet values
(Pergamon-Elsevier Science Ltd, 2017)Determination of photovoltaic performance based on single diode model and various methods requires iterative techniques, additional mandatory information and users with a certain level of knowledge. Further, the most of ... -
Numerical solutions of systems of linear Fredholm integro-differential equations with Bessel polynomial bases
(Pergamon-Elsevier Science Ltd, 2011)In this paper, a numerical matrix method based on collocation points is presented for the approximate solution of the systems of high-order linear Fredholm integro-differential equations with variable coefficients under ...