http://dspace.beu.edu.tr:8080/xmlui/handle/123456789/13722 Thu, 23 Apr 2026 06:57:38 GMT 2026-04-23T06:57:38Z http://dspace.beu.edu.tr:8080/xmlui/handle/123456789/13777 A comprehensive study of 17F + 12C system at 60 MeV: cluster model, optical model and double folding model Aygün, Murat In the present study, we analyze the quasi-elastic scattering data of 17F + 12C reaction at 60 MeV using the cluster model, the optical model and the double folding model. We compare the theoretical results obtained for all the models with the experimental data. These comparison provide information about the similarities and differences of the models used in calculations. Wed, 01 Jan 2014 00:00:00 GMT http://dspace.beu.edu.tr:8080/xmlui/handle/123456789/13777 2014-01-01T00:00:00Z http://dspace.beu.edu.tr:8080/xmlui/handle/123456789/13776 Theoretical calculations of some new N-(α,β-Unsaturated acyl)sulfonamides and an investigation on correlations with those experimental values Hancı Musalli, Süreyya Previously some new N-(α,β-Unsaturated acyl)sulfonamides are prepared (i) by the N-acylation of sulfonamides with N-(α,β-unsaturated acyl)benzotriazoles in the presence of potassium tert-butoxide and (ii) by reactions of appropriate α,β-unsaturated carboxamides with sulfonylbenzotriazoles in the presence of sodium hydride. The reaction efficiency has been changed related to route i or ii. Certain theoretical properties of N-(α,β-Unsaturated acyl)sulfonamides and reactants were calculated in Gaussian09 program using DFT method at B3LYP/6-311+g(d,p) level of theory. The theoretical data was then compared with certain experimental results. Wed, 01 Jan 2014 00:00:00 GMT http://dspace.beu.edu.tr:8080/xmlui/handle/123456789/13776 2014-01-01T00:00:00Z http://dspace.beu.edu.tr:8080/xmlui/handle/123456789/13775 Internet addiction of students at the vocational high school of healthcare Önen, Cihan; Tunçdemir, Aygül; Özer, Ali The aim of this study is to survey the internet addiction level of the students of Adıyaman University Health Vocational High School and to define the factors that affects it. The scope of descriptive research consists of 371 students of Adiyaman University Vocational School of Health Services. After the necessary permission from the related institute, to collect information from 1 to 20 December 2013 data were collected through face to face interviews. As a means of data collection; personal questionnaire and Internet addiction scale was used. In terms of statistical analyzes, the "Mann-Whitney U" test and Kruskal-Wallis H test were used. In this study, the frequency of problematic Internet use was found as 3.5% (8 people). A statistically significant relationship between Internet addiction and participants' gender, smoking status, employment status, the internet connection tool and the purpose of using it has been identified. The frequency of the avaluated students’ internet addiction was understood to be low. Wed, 01 Jan 2014 00:00:00 GMT http://dspace.beu.edu.tr:8080/xmlui/handle/123456789/13775 2014-01-01T00:00:00Z http://dspace.beu.edu.tr:8080/xmlui/handle/123456789/13774 Population sizes and migration times of the White-headed Duck, Oxyura leucocephala (Scopoli, 1769), in Turkey Nergiz, Hümeyra; Tabur, Mehmet Ali; Ayvaz, Yusuf A study on migration times and population sizes of the white-headed duck (Oxyura leucocephala), which is one of Europe’s rarest birds, was conducted between January 2007 and August 2010 at Lake Burdur, the Lake Van Basin (Lake Erçek, Lake Sodalı (Arin), Lake Norşin) and the Sultan Marshes in Turkey. It was determined that the reason for the species to prefer Lake Burdur as a wintering area was the lack of dense reeds at the share of the lake and not freez completely. The results of our study showed that the maximum individual number was 1220 and an increase in the ratio of adult male during the last years was observed at Lake Burdur. Especially in the recent years, the species was not observed in the Sultan Marshes, because of the habitat degredation. The breeding period was about seven month (AprilOctober) in the Lake Van Basin. During this period it was determined that the species prefers to breed in habitats that have tall and dense reed beds (Phragmites spp. and Typha spp.) and which are far from human effects, providing shelter against wind and precipitation. Wed, 01 Jan 2014 00:00:00 GMT http://dspace.beu.edu.tr:8080/xmlui/handle/123456789/13774 2014-01-01T00:00:00Z