DIVERSITY OF MICROFUNGI ON FAGACEAE IN ULUDAG FORESTS

WOS: 000363091600042Forests ecosystems are sources of oxygen and wood products, also they prevent soil erosion, improve water and air quality, serve as homes for wildlife; and therefore, they preserve and increase biodiversity. Forests can host a diverse community of fungal species with various effects on their host trees. In this research, trees of Fagaceae family of Uludag forests of Bursa province were investigated between the years of 2002 and 2008. By microscopic examination we identified 38 microfungi species in 27 genera belongs to Ascomycota and 1 microfungus species in 1 genus belongs to Basidiomycota. The taxa belong to 15 families: Botryosphaeriaceae, Diaporthaceae, Diatrypaceae, Dothioraceae, Erysiphaceae, Gnomoniaceae, Incertae sedis, Melanconidaceae, Microstromataceae, Nectriaceae, Pseudovalsaceae, Rhytismataceae, Trichosphaeriaceae, Valsaceae and Xylariaceae. The distribution of species by trophic groups revealed a dominance of xylotrophic species. With this study, fungal diversity of Fagaceae family in Uludag forests was identified and included in the mycobiota of Turkey

Investigation of the correlation of performance parameters with rock brittleness concepts on diamond wire cutting

ISRM International Symposium - EUROCK 2012 --28 May 2012 through 30 May 2012 -- --138890Effective usage of the diamond wire in a marble quarry is important to get high production rates and low production costs. In a quarry, cutting rate of the wire and wear of the diamond beads on wire are the performance parameters for the diamond wire cutting operation. In this study, the effects of the rock brittleness on the efficiency of diamond beads are examined by investigating cutting rate and unit wear values. Until now, the effect of the rock brittleness on diamond wire cutting has not been put forward by any researchers. Therefore, it is aimed to correlate the relationships between performance parameters and some brittleness concepts proposed by Hunca & Das (1974) (B1 and B2), Altindag (1974) (B3) and Yarali & Soyer (2011) (B4). These brittleness concepts were used to investigate the relationships between performance parameters in diamond wire cutting, which include bead wear and cutting rate, and rock brittleness. This study was performed on nine different rocks, composed of seven marble samples and two limestone samples. As a result of this study it is found out that unit wear values increase with increasing brittleness concepts B1, B2, B3 and B4. It is also found out that cutting rate values decrease with increasing brittleness concepts B1, B2, B3 and B4. © BeFo and ISRM, 2012

The effects of freeze–thaw cycles on the gloss values of polished stone surfaces

Natural stones, each with particular physical, mechanical, chemical and mineralogical and petrographic properties, are used as covering or pavement materials and thus are important because of their practical uses. The physical and mechanical properties of these materials used as the pavement of buildings in open areas are affected by temperature variations especially in cold regions. In construction projects, particularly in areas exposed to temperature variations, gloss value is one of the most essential physical features of natural stones that will be used as covering or pavement materials. Wetting-drying, heating-cooling, and freezing-thawing are environmental factors of considerable importance in the aging of natural stones. In order to determine the stone which is most suitable for use in the areas exposed to temperature variation under non-stable climatic conditions, gloss value (the surface brightness of the polished natural stones after freezing-thawing) was investigated using a thermostatic chamber. In this study, the effect of temperature variation on the surface brightness of polished natural stones (gloss value) and the relationship between gloss value and some physical, mechanical properties of natural stone samples and also calcite grain size were elucidated. As a result, it is revealed that natural stone samples except limestone used in the study are not suitable for outdoor applications in cold regions due to high variations in their gloss values

A Study of nozzle angle in stone surface treatment with water jets

The stone surface treatment with water jet is a recently introduced method. It is used to increase the roughness to improve its antislip properties while preserving esthetic appearance of the stone without having thermal shock, mechanical stress and the production of fumes and dust. Nozzle angle is one of the important parameters affecting treatment of surface. This study is an attempt to assess the effect of nozzle angle on surface treatment quality with water jet and to determine the most suitable nozzle angle value. For this purpose, surfaces of Sardinian Basalt samples are treated with pure water jet in six different nozzle angles (15 degrees, 30 degrees, 45 degrees, 60 degrees, 75 degrees and 90 degrees). The roughness is measured on all the treated surfaces by various roughness parameters. The experimental studies showed that treatment with nozzle angle between 30 degrees and 75 degrees gives the surfaces with similar regular variation

Diversity of microfungi on fagaceae in uludag forests

Forests ecosystems are sources of oxygen and wood products, also they prevent soil erosion, improve water and air quality, serve as homes for wildlife; and therefore, they preserve and increase biodiversity. Forests can host a diverse community of fungal species with various effects on their host trees. In this research, trees of Fagaceae family of Uludag forests of Bursa province were investigated between the years of 2002 and 2008. By microscopic examination we identified 38 microfungi species in 27 genera belongs to Ascomycota and 1 microfungus species in 1 genus belongs to Basidiomycota. The taxa belong to 15 families: Botryosphaeriaceae, Diaporthaceae, Diatrypaceae, Dothioraceae, Erysiphaceae, Gnomoniaceae, Incertae sedis, Melan-conidaceae, Microstromataceae, Nectriaceae, Pseudovalsaceae, Rhytismataceae, Trichosphaeriaceae, Valsaceae and Xylariaceae. The distribution of species by trophic groups revealed a dominance of xylotrophic species. With this study, fungal diversity of Fagaceae family in Uludag forests was identified and included in the mycobiota of Turkey. © 2015, Scibulcom Ltd. All rights reserved