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Search Results: 1 - 10 of 172 matches for " Kivan? Vural "
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Comparison of Macroeconomic Performance of Selected Asian Countries. An Econometric Analysis of China Economic Growth and Policy Implications
Hasret Benar Balcioglu,KivanVural
Theoretical and Applied Economics , 2009,
Abstract: This paper compares the key macroeconomics indicators for the selected countries: China, Malaysia, Indonesia, Korea, Rep. and India and also makes an econometric analysis for China for the period 1961-2007. These countries are chosen on the basis of comparability of data and time without measurement errors. This study also investigates six hypotheses considering the impact of several key macroeconomic variables such as domestic saving rate, domestic investment rate, and volatility of savings, volatility of inflation, growth rate of exports and growth rate of real GNP. By using suitable statistical and econometric tests, this paper finds that prevailing performance of China depends on its superior rates of domestic saving and exports. Policies are also suggested from the differentials between the economic performances of China and other chosen Asian countries.
Preliminary characterization of Rhizobium strains isolated from chickpea nodules
Kü ük, M Kivan
African Journal of Biotechnology , 2008,
Abstract: A total of 28 Rhizobium strains from chickpea nodules were characterized on the basis of morphological, cultural and biochemical characteristics. Most strains produced abundant extracellular polysaccharides, were tolerant to 0.5 M NaCI (53%) and a temperature of 40oC (75%). The majority of the strains showed an intrinsic resistance to the antibiotics (ìg ml-1) streptomycin (100), kanamycin (50), erytromycin (30), chloramphenicol (200) and penicilin (25). In vitro antibiosis assays indicated that Rhizobium strains from chickpea nodules exercised an antagonism against Ascocyhta rabiei the agent of ascocyhta blight disease of chickpea.
Müjgan KIVAN
Journal of Central European Agriculture , 2006,
Abstract: To investigate the effect of azadirachtin on different stages of the sunn pest, Eurygaster integriceps Put. (Het., Scutelleridae) in the laboratory, a commercial neem insecticide (NeemAzal T/S) was applied at dose of 0.5 % by dipping insects. No effect was observed for 1. instar nymphs at 1 day after application, although adults had slightly effect (20 %). Adults and nymphs were infl uenced 7 days after the treatment and mortality rates for adults and nymphs were recorded 44.0 and 51.9 %, respectively. The hatching of treated eggs was reduced than control. These results indicate that NeemAzal T/S may be used in integrated sunn pest management, but should be evaluated for fi eld efficacy.
Isolation of gallic acid-producing microorganisms and their use in the production of gallic acid from gall nuts and sumac
NY Sari zlü, M Kivan
African Journal of Biotechnology , 2009,
Abstract: A total number of eighty gallic acid producing strains were isolated from forest soil or plant samples. Among these strains, thirteen isolates were selected for gallic acid production and these isolates were Aspergillus niger 1, A. niger 2, A. niger 3, Penicillium canescens (3), P. frequentans (2), P. spinulosum (2), P. purpurogenum (2), and P. zacinthae. By using eight of these strains and reference strain of A. niger NRRL 321, the production of gallic acid from oak tree (Quercus infectoria) gall nuts or sumac (Rhus coriaria) leaves were investigated. Maximum gallic acid yields from gall nuts were obtained for A. niger 3 (91.3%) and P. spinulosum (93.2%). In the case of sumac leaves, the reference strain A. niger NRRL 321 (46.1%) and P. zacinthae (48.2%) gave the highest gallic acid yields. To date, this study is the first report on production of gallic acid by these newly isolated Penicillium strains. Particularly, A. niger 3, P. spinulosum, P. purpurogenum and P. canescens may be used not only for gallic acid but also tannase production from tannin rich plant materials such as gall nuts. Their high yields and short incubation periods are also remarkable.
Anadolu University Journal of Science and Technology - C. Life Sciences and Biotechnology , 2012,
Abstract: Depending on the changing world trends has been increasing interest in colored products. In the textile industry, to give the blue color to the textiles the heavily used Ambifiks Blue H5R (Blue 13) dye. This dye has been given from plants in the environment of the receiving water to results from the toxic effects. For reduction of this toxic effect has been isolated Aspergillus niveus and Fusarium moniliforme from porsuk Stream were invastigated because of decolorizasyon capabilities with different physiological conditions (pH, temprature, agitate condition). For A. niveus results have been obtained up to nearly %95 at pH 3, 35°C and 120-150 rpm. For F. moniliforme results have been obtained up to nearly %95 at pH 7, 20°C ve 120 rpm. For A. niveus decolorisation results were close to dead cells and live cells.Dead cells decolorisation were about %90 for F. moniliforme and live cells decolorisation were about %75.
Quantification and presence of human ancient DNA in burial place remains of Turkey using real time polymerase chain reaction
HC Vural
African Journal of Biotechnology , 2009,
Abstract: Archaeometry and forensic laboratories are increasingly confronted with problematic samples from the scene of samples, containing only minute amounts of deoxyribonucleic acid (DNA), which may include polymerase chain reaction (PCR) inhibiting substances. Efficient DNA extraction procedures, as well as accurate DNA quantification methods, are critical steps involved in the process of successful DNA analysis of such samples. Genomic DNA was extracted automatically by using EZ1 Automatic Nucleic Acid Isolation System (Qiagen, Germany) with investigator kit (Qiagen, Ilden, Germany) from ancient bones. This method is a sensitive for the extraction of DNA from a wide variety of forensic samples, although it is known to be laborious compared with single tube extraction methods. The relatively high DNA recovery and the quality of the extracted DNA speak for itself. For reliable and sensitive DNA quantitation, the application of real time PCR is described. A published real-time PCR assay, which allows for the combined analysis of nuclear or ancient DNA and mitochondrial DNA, was modified. This approach can be used for recovering DNA from the surface of fossil bone remains in Turkey via a simple procedure that permits a direct quantitative and qualitative assessment of molecular markers. Using quantitative RT-PCR, the available sources of total aDNA was shown to consists of intact DNA that is virtually free of RNA, resulting in a more accurate representation of gene expression using RTPCR and PCR amplification methods. In this study, the results demonstrate that RT-PCR method can be useful for the improved ancient DNA extraction in anthropology and archeology.
We built the first public radial angiography laboratory contrary to the hesitation that conventional coronary angiography could have been performed in Erzincan
Mutlu Vural
Anadolu Kardiyoloji Dergisi , 2011,
Suggestions for definition and classification of double right coronary artery, which is frequently seen in Turkey despite its rarity in the literature
Mutlu Vural
Anadolu Kardiyoloji Dergisi , 2008,
Zeitschrift für die Welt der Türken , 2012,
Abstract: The history of Turkish Military Band is as old as Turkish history. These bands have been developed with different cadres and names until today. This band was named after "Mehter" in Ottoman period and it has gained the organizational structure which a source of inspiration of world military bands. In this study, which has been exhibited that organization of Mehter and Mehter's historical adventure, it has been emphasized that this band's structure in the light of information obtained literature research.
The differences between the strengths of qualty levels of weld imperfections given in ISO 5817
M. Vural
Journal of Achievements in Materials and Manufacturing Engineering , 2006,
Abstract: Purpose: ISO 5817 “Arc-welded joints in steel-Guidence on quality levels for imperfections” is a widely used international standard for evaluating of the weld imperfections in arc welded joints. In this study, in order to see the differences between the quality levels given in ISO 5817, the welded joints of B, C and D levels are subjected to the same load and the differences of maximum stresses at the joints are analysed by FEM.Design/methodology/approach: The welded joints with the quality levels of the weld imperfections given in ISO 5817 are modeled by a Solidworks FEM program, and they are subjected to static loading in order to determine the maximum stresses at the cross-sections of the joints.Findings: The stress values at the welded joints generally increases from the quality level of “B” to “D”. Exceptions of this behavior are the imperfections defined as “fillet welds having the throat thickness greater than nominal value”, “excessive penetration” and “excessive asymmetry fillet weld”. In these imperfections, the cross-sections carrying the force increases from “B” to “D”. Because of static force, a greater cross-section forms a smaller stress value. Thus, it must be given in the ISO 5817 whether the welded joint is subjected to a static or dynamic load.Research limitations/implications: Three dimensional models can be investigated and the effect of 3D weld imperfections on the behavior of a more realistic model can be calculated.Practical implications: The results show that some imperfections like “excessive penetration” and “excessive asymmetry filet weld” have less importance compared to the others.Originality/value: ISO 5817 is a worldwide used Standard for evaluating the weld imperfections. The quality levels of weld imperfections are compared with each other with FEM. The Standard includes 57 different quality levels and this paper compared all these levels with each other.
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