Gaz Türbini Pallerindeki Akış Ayrılmasına İz Ve Pürüzlülük Etkilerinin DNS Yöntemiyle İncelenmesi

Konferans Bildirisi -- Teorik ve Uygulamalı Mekanik Türk Milli Komitesi, 2013Conference Paper -- Theoretical and Applied Mechanical Turkish National Committee, 2013Bu çalışmada, düşük-basınçlı gaz türbini pallerinin emme yüzeyindeki akışa benzer, düz bir levhada ters-basınç etkisiyle oluşan laminer ayrılma bölgesine, yüzey pürüzlülüğünün ve bir önceki kanadın ardizinin etkisi direk sayısal çözümleme yöntemi ile incelenmiştir. İz ve pürüzlülük etkilerinin birlikte incelendiği durum için alınan sonuçlara göre laminar ayrılma baloncuklarının boyutlarında düşüş olduğu görülmektedir. Fakat, bu iki etkinin sınır tabaka gelişimine etkisi iz ve pürüzlülüğün ayrı ayrı etkilerinin yanında ihmal edilecek kadar düşük kaldığı görülmektedir. Anahtar Kelimeler : Direk Sayısal Benzetim, Ters Basınç Gradyeni, Akış Kontrol, TürbülansIn this study, the combined effects of surface roughness and wake passing frequency to the laminar seperated region in a flat plate, similar to the suction side of the low pressure turbine blade, are investigated using Direct Numerical Simulation approach with adverse pressure gradient. For the case of the combined effects of surface roughness and wake passing frequency a decrease is observed in the size of the laminar separated bubble. However, the combined effects of the surface roughness and wake passing frequency to the development of the boundary layer is negligible compared to the individual effects of surface roughness and wake passing frequency. Keywords: Direct Numerical Simulation, Adverse Pressure Gradient, Flow Control, Turbulenc

Investigations on pests, diseases and present early warning system of apple orchards in Isparta, Turkey

As a result of three year surveys performed in the apple orchards in Isparta region, 19 pest species belonging to 4 orders were determined and it was found that the main pest was codling moth. Most of the predators and parasitoids were effective against aphids and they were mostly found in the orchards where selective pesticides were used. Apple scab and powdery mildew were the most common and important diseases. Biology of codling moth and apple scab in the region were investigated. By using the obtained data, proper application times were given and some recommendations regarding integrated pest management program in apple orchards, were summarized

Evaluation of in vitro antifungal activity of potassium bicarbonate on Rhizoctonia solani AG 4 HG-I, Sclerotinia sclerotiorum and Trichoderma sp.

The effect of increased concentrations of potassium bicarbonate (KHCO3) as a possible alternative to synthetic fungicides for controlling Rhizoctonia solani AG 4 HG-I and Sclerotinia sclerotiorum was evaluated in vitro, in this study. In addition, the effect of potassium bicarbonate on Trichoderma sp., a natural antagonist on R. solani AG 4 HG-I and S. sclerotiorum was determined. Potassium bicarbonate substantially inhibited (P<0.05) the growth of the three fungal strains. Mycelial growth of R. solani AG 4 HG-I significantly decreased as the concentration of bicarbonate increased, especially at concentrations greater than 200 mM. Similarly, mycelial growth of both S. sclerotiorum and Trichoderma sp. dramatically reduced in increasing concentrations of KHCO3. Mycelial growth of either fungi was completely inhibited when exposed to 100 mM bicarbonate. In addition, KHCO3 concentrations higher than 10 mM caused significant (P<0.05) reduction of the sclerotium formation of S. sclerotiorum. Also, sclerotium germination and de novo sclerotium formation were significantly inhibited as the concentrations of KHCO3 increased. As a result, it was concluded that potassium bicarbonate was an alternative chemical agent for  controlling R. solani AG 4 HG-I and S. sclerotiorum. Also, KHCO3 was found to have negative effects on Trichoderma sp.Key words: Antifungal effect, KHCO3, soil borne pathogens, sclerotium germination

Flea beetles (Coleoptera: Chrysomelidae: Alticinae) collected by malaise trap method in Gölcük Natural Park (Isparta, Turkey), with a new record for Turkish fauna

This study is based on Alticinae (Coleoptera: Chrysomelidae) material collected by Malaise trapping which is different from other standardized collecting methods. A total of 19 flea beetle species belonging to 6 genera were collected from Gölcük Natural Park, Isparta (Turkey) during 2009. The species are listed in a table together with distributional data in Turkey. Among them, Longitarsus curtus (Allard, 1860) is recorded for the first time in Turkey. L. monticola Kutschera, 1863 and L. curtus are recently separated synonyms and thus all data referring to the distribution of both species are currently important. Hence, the zoogeographical distribution of the new record is reviewed with some remarks; habitus and genitalia are illustrated

Laboratory Genetic Testing in Clinical Practice 2016.

WOS: 000392526600001PubMed ID: 2813360

Laboratory genetic testing in clinical practice 2014.

WOS: 000352434200001PubMed ID: 2587902

Evolution of Genetic Techniques: Past, Present, and Beyond.

Genetics is the study of heredity, which means the study of genes and factors related to all aspects of genes. The scientific history of genetics began with the works of Gregor Mendel in the mid-19th century. Prior to Mendel, genetics was primarily theoretical whilst, after Mendel, the science of genetics was broadened to include experimental genetics. Developments in all fields of genetics and genetic technology in the first half of the 20th century provided a basis for the later developments. In the second half of the 20th century, the molecular background of genetics has become more understandable. Rapid technological advancements, followed by the completion of Human Genome Project, have contributed a great deal to the knowledge of genetic factors and their impact on human life and diseases. Currently, more than 1800 disease genes have been identified, more than 2000 genetic tests have become available, and in conjunction with this at least 350 biotechnology-based products have been released onto the market. Novel technologies, particularly next generation sequencing, have dramatically accelerated the pace of biological research, while at the same time increasing expectations. In this paper, a brief summary of genetic history with short explanations of most popular genetic techniques is given