Yayın tarihi için Fakülteler listeleme
Toplam kayıt 6446, listelenen: 141-160
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Squalius kottelati, a new cyprinid species (Teleostei: Cyprinidae) from Orontes River, Turkey
(Magnolia Press, 2009)Squalius kottelati, new species, is described from the Orontes, Ceyhan and Seyhan rivers in Turkey. It belongs to the S. lepidus group, characterized by a projecting lower jaw. It is distinguished from the other species ... -
Fatty acid and amino acid compositions of cultured and wild sea bass (Dicentrarchus labrax L., 1758) from different regions in Turkey
(2009)The main aim of this research is to determinate the fatty and amino acid alternations of cultured and wild sea bass (Dicentrarchus labrax) flesh obtained from different regions of Turkey. The major fatty acids of sea bass ... -
Fourier method for a quasilinear pseudo-parabolic equation with periodic boundary condition
(2009)A multidimensional mixed problem with Neuman type periodic boundary condition is studied for quasilinear pseudo-parabolic equation ?u/?ta2 ?2u/?x2 - ? ?3u/?t?x2 = f(t, x, u). The existence, uniqueness and also convergence ... -
Barbus niluferensis, a new species of barbel (Teleostei: Cyprinidae) from Nilüfer River, Turkey, with re-description of B. oligolepis
(Magnolia Press, 2009)Barbus niluferensis, new species, is described from the Nilüfer River, Marmara Sea drainage, Turkey, It is distinguished by a weaker last simple dorsal-fin ray, serrated along the proximal half of its posterior margin, a ... -
AC losses in a commercial Bi: 2223/Ag tape
(Institute of Physics Publishing, 2009)We have investigated the effect of temperature, field amplitude, frequency and orientation of the field on AC losses in a commercial Bi:2223/Ag tape. The measurements were performed using an AC susceptometer. The experimental ... -
Investigation of effect of x in Yb1-xGdxBa 2Cu3O7-y superconducting structures on upper critical magnetic field and coherence length
(Institute of Physics Publishing, 2009)The resistivity measurements of the Yb1-xGdxBa 2Cu3O7-y superconducting samples prepared by using the solid-state reaction technique for x=0.0, 0.2, 0.4, 0.6, 0.8 and 1.0 were performed in QD-PPMS system under different ... -
Development and situation of trout culture in turkey
(Jelgava : Latvia University of Agriculture, 2009)The production of rainbow trout (Oncorhynchus mykiss) is developing and it is most cultured finfish species in Turkey. It was first introduced in Turkey in the mid 1970s from Italy. In the following years, culture studies ... -
Anomalous ferromagnetic behaviour of Y2O3 and CuO nanoparticles in YBa2Cu3Oy superconductor
(Institute of Physics Publishing, 2009)Anomalous ferromagnetic behaviour of the Y2O3 and CuO components in YBa2Cu3Oy (Y123) was observed after severe reduction of particle size. The particle size reduction was performed in following way: Y2O3, BaCO3 and CuO ... -
The atlantic starfish, Asterias rubens Linnaeus, 1758 (Echinodermata: Asteroidea: Asteriidae) spreads in the Black sea
(Regional Euro-Asian Biological Invasions Centre, 2009)A single specimen of Asterias rubens was collected on 17 February 2009 off Karasu, Sakarya, Turkey. Its possible impact on Mytilus galloprovincialis beds in the Black Sea is discussed. © 2009 The Author(s). -
Synthesis of some new 1,3,4-thiadiazol-2-ylmethyl-1,2,4-triazole derivatives and investigation of their antimicrobial activities
(Elsevier, 2009)4-Amino-2-[(5-arylamino-4,5-dihydro-1,3,4-thiadiazol-2-yl)methyl]-5-(4-methylphenyl)-2,4-dihydro-3H-1,2,4-triazol-3-ones (3a-c) were obtained in acidic media via the formation of 2-[(4-amino-3-aryl-5-oxo-4,5-dihydro-1H-1 ... -
Relationships between vegetation zonation and edaphic factors in a salt-marsh community (Black Sea coast)
(2009)The effects of pH, electrical conductivity (EC), soluble cations (Na +, K +, Ca 2+, Mg 2+), and soluble anions (HCO 3 -, Cl -, SO 4 2-) on vegetation zonation in a salt-marsh community (Black Sea coast) were investigated ... -
A new DNA polymerase i from Geobacillus caldoxylosilyticus TK4: Cloning, characterization, and mutational analysis of two aromatic residues
(Springer, 2009)DNA polymerase I gene was cloned and sequenced from the thermophilic bacterium Geobacillus caldoxylosilyticus TK4. The gene is 2,634 bp long and encodes a protein of 878 amino acids in length. The enzyme has a molecular ... -
The effects of land-use changes on soil properties: The conversion of alder coppice to tea plantations in the Humid Northern Blacksea Region
(2009)Over the last century, the conversion of natural ecosystems to agricultural production is one of the primary factors in environmental degradation. As in most parts of the world, forest soils in the northeast of Turkey are ... -
Photochemistry of nitro-substituted (E)-2-azachalcones with theoretical calculations and biological activities
(Elsevier, 2009)Four new stereoselective dimerization products (4a-c, 5) of m- and p-nitro-substituted (E)-2-azachalcones (2 and 3) were synthesized and tested for antimicrobial and antioxidant activities. Compounds 1-3 showed very good ... -
Factors affecting quality of life in patients with coronary heart disease
(2009)Amaç: Günümüzde tüm dünyada kardiyovasküler hastalıklar en sık ölüm nedenidir ve yaşam kalitesinde ciddi azalmaya yol açmaktadır. Bu çalışmada ülkemizde, koroner arter hastalarında yaşam kalitesi ve yaşam kalitesini etkileyen ... -
Evaluation of cerebellar asymmetry in Alzheimer's disease: A stereological study
(Karger, 2009)Objectives: Alzheimer's disease (AD) is the most common cause of dementia and, as previous studies have indicated, degenerative changes in the cerebellum occur in AD. It is well known that the cerebellum does not have a ... -
Effects of organic and synthetic carotenoids on the sensory quality and chemical composition of rainbow trout (Oncorhynchus mykiss, W. 1792)
(2009)The chemical qualities and sensory properties of rainbow trout given diets containing red pepper (Oleoresin paprika) extract, gammarus powder, commercial astaxanthin and canthaxanthin over a 2 month period were compared ... -
The relationship between plasma homocysteine and early coronary collateral vessel development after acute myocardial infarction
(2009)Amaç: Homosisteinin endotelyal hücre proliferasyonunu inhibe ettiği bilinmektedir. Koroner kollateral dolaşımın gelişimini etkileyen faktörler iyi bilinmemektedir. Bu çalışmada plazma homosistein düzeylerinin akut miyokard ... -
Influence of annealing temperature on the microstructure and mechanical properties of MgB2
(Institute of Physics Publishing, 2009)We have investigated the effect of annealing temperature on the microstructure, magnetic and mechanical properties of MgB2 superconducting samples employing X-ray diffraction (XRD), scanning electron microscopy (SEM), ac ... -
Family of surface with a common null geodesic
(2009)We analyzed the problem of finding a surfaces family through a null curve with Cartan frame. We constructed a differential equation system such that a given null curve is an isogeodesic curve on a surface. In addition, ...
