http://dspace.beu.edu.tr:8080/xmlui/handle/123456789/13733 2026-04-23T06:51:37Z http://dspace.beu.edu.tr:8080/xmlui/handle/123456789/13872 Effect of deformation on gamow-teller strength and electron capture cross-section for isotopes of chromium Ullah, Asim; Riaz, M.; Nabia, Jameel-Un; Boyukatab, Mahmut; Çakmak, Necla In this work, we explore the role of deformation parameter (β) on the calculated Gamow-Teller (GT) strength distributions and electron capture cross-sections (ECC) for 46,48,50Cr isotopes within the formalism of the proton neutron-quasi-particle random phase approximation (pn-QRPA). Three different β parameters were used in the present study. Two of them were calculated by using the interacting boson model (IBM) and the macroscopic-microscopic (Mac-mic) models. The third one is the experimental β values obtained by employing its relation with the experimental B(E2)↑ values. The GT strength distributions were widely dispersed among all the daughter states of the given isotopes. They were found to have inverse relation with β parameter i.e decreasing with increasing the β value. The ECC were computed as a function of β parameter and the results suggest that the calculated ECC decreased with decreasing value of the β for the selected cases. 2020-01-01T00:00:00Z http://dspace.beu.edu.tr:8080/xmlui/handle/123456789/13870 Radon concentration measurements in surface water samples from Van Lake, Turkey using CR-39 detectors Kayakökü, Halime; Doğru, Mahmut In this study, radon concentration was examined in surface water samples taken from Van Lake in spring and autumn. The samples were taken along the coastline from Tatvan, where the active fault line lies, until Erciş. Analyses were performed by using CR-39 solid nuclear track detectors and RadoSYS radon measurement system. Radon measurement parameters (CRn, Es, Em and ECRa) were calculated with the data obtained. The results of this study were compared with the limit values given for radon in water and the results obtained in similar studies. 2020-01-01T00:00:00Z http://dspace.beu.edu.tr:8080/xmlui/handle/123456789/13868 The effects of changing story number and structural footprint area on building performance in reinforced-concrete buildings Işık, Ercan; Sayın, Nursima; Ulu, Ali Emre Structural footprint area and number of stories occupy an important place among the factors affecting the behavior of buildings under earthquake effects. In this study, footprint area and number of stories are considered as two different variables. A sample reinforced-concrete building with all values such as structural system elements, dimensions, materials, material models and loading status is selected same in all different structural models. The structural analyzes were made for a single direction since the structure was chosen symmetrically. In each building model, the axle clearance has been increased by one meter in both directions. As the second variable, four different story numbers were chosen as 5, 6, 7 and 8. Eigenvalue and static pushover analyzes were performed for the each structural model. Target displacement for damage estimation, period, stiffness and base shear force values were obtained for all models, respectively. Both, Eurocode 8-Part 3 and Turkish Seismic Design Code-2018 were considered in the analysis. As the building footprint area and number of story increase, period, displacement and target displacement increase for both codes. 2020-01-01T00:00:00Z http://dspace.beu.edu.tr:8080/xmlui/handle/123456789/13866 Effects of commonly used pesticides (demond, granland and safacol) on non-targeted organisms (wheat plant, soil nematodes, microfungi and aerobic mesophilic bacteria) in Muş Province, Turkey Koç, İbrahim; Urgan, Emrullah; Güven, Ayşenur; Ilıkhan, Birgül Chemical drugs (pesticides) that are xenobiotic to the nature of agricultural agro-ecosystems affect the target organism and non-target factors. The efficiency and reliability of agricultural areas are important not only for living creatures in the environment, but also for community. This study was carried out to determine the effects of Demond EC 2.5 (insecticide), Granland DF (herbicide) and Safacol 70 WP (fungicide) pesticides, which are widely used in the agricultural areas of Muş, on the development of nontarget wheat plant, free-living nematodes, microfungi and aerobic mesophilic bacteria communities. The study was performed in three replicates in the variance analysis method for repeated measurements in laboratory conditions. Pesticides were applied by spraying to the pots including one kg of soil as recommended and upper doses, respectively, with the help of an injector. Repeated Measurement ANOVA and Profile Analysis Technique were used in the comparison of treatments in terms of nematode, bacteria and microfungi numbers (before-after), and the Analysis of Means (ANOM) Technique in comparing treatments in terms of plant parameters. As a result of the experiments; While the effect of only periods is important for the bacteria combination (P=0.001); for the microfungi community, both period (P=0.004) and Period × Treatment interaction were found significant (P=0.050). Periodic × Treatment interaction was statistically significant for plant-parasitic, omnivore-predator, bacterivore and total nematodes respectively (P=0.002; P=0.004; P=0.001; P=0.000). As a result; the pesticides used had more or less positive effects on the microfungi community, while they had a negative effect on the bacteria community; According to trophic levels, soil nematodes and plant parameters were found to have a positive / negative effect. It is thought that pesticides should be used in the last resort and recommended dosage, without forgetting that the soil is complex and all living things share this environment. 2020-01-01T00:00:00Z