Search

Our field research in Van province during 2008–2009 resulted in collection of 3766 lichen samples from 55 sites, and identification of 229 lichen taxa, including two subspecies and three varieties, in 108 genera of Ascomycota. We found 182 new records for Van province. These include four new records for Turkey, namely Bibbya ruginosa, Buellia subalbula, Caloplaca tenuatula and Rimularia gibbosa. Lists of species and collection sites are provided. Acarospora (11 species), Lecidea (9 species), Verrucaria (8 species), Caloplaca, Physcia and Rinodina (7 species for each), and Aspicilia, Lecanora and Polyozosia (6 species for each) are the genera richest in species in the study area. Of the identified species, 163 are crustose, 43 are foliose, 7 are fruticose, 13 are squamulose and 3 are leprose. 101 species colonise on calcareous rocks, 86 on siliceous rocks, 23 on various trees (epiphytic), 10 on soil, 12 on moss and 17 on other lichens (lichenicolous). Sites 16, 19 are the richest with 55 identified taxa, followed by sites 52, 34, and 6 with 51, 49 and 44 taxa, respectively. The poorest sites are 40 and 42 with 6 identified taxa, followed by sites 5, 7, and 21 with 8, 8, and 9 taxa, respectively. [ABSTRACT FROM AUTHOR]

In this study, the Chi Square that is used to determine whether there is a relationship between variables and the co-efficiency of relationship (association measures) that is used to determine if there is a direction and a degree will be emphasized. Moreover, decreasing the prediction mistakes and the relationship co-efficiencies with ordinal co-efficiencies and the scalar co-efficiencies with Eta co-efficiencies will be analyzed. The factors which affect the achievement of the students of the Faculty of Economical and Administrative Sciences, Cumhuriyet University were analyzed for this study. The relation co-efficiencies were determined by considering measurement levels and all the variations related to the students. Furthermore, it is determined whether the factors, what are considered to affect achievement of the students, affect the variations and the dosage of the effects and the direction of the effect. [ABSTRACT FROM AUTHOR]

The purpose of the this study is concerned with logistic regression analysis, which is able to define the relation between dichotomous outcome variable and the set of independent variables that contains both continuous and discrete variables. The factors that force housewives in Sivas to request assistant for house work was established by applying logistic regression analysis to relevant survey data. The final model has been confirmed that it can be used to determine the factors that influence housewives to request assistant for house work, since it's correct classification ratio is good enough. [ABSTRACT FROM AUTHOR]

This paper presents general information on simulation with Pareto distribution and introduces an algorithm to generate random numbers by simulation method. A computer code has been developed for this algorithm by using Delphi programming language. Ten thousand random numbers for Pareto distribution have been generated using this program, and the chi-square goodness-of-fit at five percent significance level has been performed. [ABSTRACT FROM AUTHOR]

This study was carried out in the province of Artvin, district of Murgul. A total of 94 species in 41 genera belonging to Ascomycetes were found, two of which are varieties and three are subspecies. Eight of these species are new records for Turkey. [ABSTRACT FROM AUTHOR]

The aim of this study was to investigate the effects of methanol, acetone, n-hexane and ether extracts obtained from Pseudovernia furfuracea on genotoxicity and total antioxidant capacity (TAC) in cultured human blood cells intoxicated with aflatoxin B 1 (AFB1). Sister chromatid exchange (SCE) and micronucleus (MN) tests were used for genotoxic influences estimation. In both the test systems, it was observed that P. furfuracea extracts suppressed the mutagenic effects of AFB1 due to the type of extracts added to the cultures. Furthermore, a significant reduction in plasma TAC was observed after AFB 1 treatment. Interestingly, the methanol and acetone extracts of the lichen recovered AFB1-induced TAC inhibition. The order of extracts of anti-genotoxicity efficacy against AFB1 was methanol, acetone, ether and n-hexane, respectively. In conclusion, P. furfuracea has been shown to modulate the adverse effects of AFB1 in human blood cells for the first time. [ABSTRACT FROM PUBLISHER]