Browsing by Subject "Optimal conditions"

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    Relationship between airborne fungal allergens and meteorological factors in Manisa City, Turkey
    (2010) Kalyoncu F.
    In this study, the effect of relative humidity, temperature, and wind on airborne fungal allergens in the 11 different districts of Manisa City was investigated from January 2004 to December 2005. The aim of this study was to conduct a survey to get to know the relation between wind, temperature, and relative humidity and population of allergenic fungal spores in the atmosphere. A total of 792 samples were observed by using the Merck MAS100 air sampler and 12,988 fungal colonies were counted. Fourteen fungal genera could be determined; Cladosporium that was generally found as the predominant genus followed by Penicillium, Aspergillus, and Alternaria. During the entire study, seasonal variation was found to be related to atmospheric conditions especially. The optimal conditions of meteorological factors for the fungi growth resulted in the increased number of mycoflora, qualitatively and quantitatively. © 2009 Springer Science+Business Media B.V.
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    Microstructural and mechanical properties of pure aluminunn, 5083 and 7075 alloys joined by friction stir welding
    (Carl Hanser Verlag, 2012) Yilmaz S.S.
    In this study, microstructural and mechanical properties of pure alu-minum, 5083 and 7075 alloys joined by friction stir welding were inves-tigated. Hardness, tensile, bending and impact tests were applied to the welded samples. In addition, optical and SEM tests were carried out. The effects of welding speed on microstructure and mechanical properties were investigated in these materials. Then, the optimal conditions for friction stir welding were determined for pure aluminum, 5083 and 7075 alloys. The maximum hardness was observed for 7075 while the minimum hardness was observed for pure aluminum. © Car Hanser Verlag, München.