Middle East Technical University – Defocusing Beam Line (METU-DBL) project is an irradiation facility providing 15 MeV to 30 MeV kinetic energy protons for testing various high radiation level applications, ranging from Hi-Lumi LHC upgrade, space electronic components to nuclear material research. The project located inside the premises of the TAEA (Turkish Atomic Energy Agency) SANAEM (Saraykoy Nuclear Education and Research Center) close to Ankara, provides users a wide selectable flux menu (105–1010 p/cm2/s). The facility is now being commissioned and the facility will be providing a large test area (20 cm x 15 cm) for material, detector and electronics tests. The proton beam is monitored along the beamline using aluminum oxide screens and the flux and uniformity is measured using three detectors attached to the robotic system for cross- checks. A fiber scintillator detector scans the large irradiation area while small area diamond detector and Timepix3 detector are used for spot checks for calibration. Several samples can be radiated simultaneously inside the irradiation area and the robotic system provides 5 separate holders for samples which can be moved in or out, providing users flexibility for the desired fluence. This talk will first introduce METU- DBL as a radiation test facility, then discuss the radiation monitoring of the beam area and the radiation room, while highlighting how this facility can be used for future testing of materials for radiation tolerance.
The current study presents the results of the activity of radionuclides in spa waters, and evaluates their radiological influences on the population consuming these waters in the Central and Eastern Black Sea regions of Turkey. Since these waters are used for therapy and consumption purposes unconsciously, their radiological impact on the people was computed by taking into consideration the annual intake through ingestion of Ra,Th, K,Cs and Rn. The mean activities were estimated to be 11.35 for gross alpha, 6.23 for gross beta, 2.96 forRa, 0.42 for Th, 0.069 forCs, 0.19 for K, and 267 Bq L for Rn, respectively. The estimated effective doses from spa water were found to be 49.77 µSv a (Ra), 5.95 µSv a (Th), 0.07 µSv a (Cs), 0.83 µSv a (K) and 56.03 µSv a (Rn). These values were evaluated and compared with related verified values from literature. Also, physico-chemical characterizations of spa water samples considered in the current study were investigated. This study would be useful for consumers and official authorities for the assessment of radiation exposure risk due to usage of the considered spa waters.
This descriptive study was conducted to identify the motivation levels of university students, factors affecting their motivation, and students' opinions concerning their professions. The study sample consisted of 211 students attending the Vocational School of Health Services. Data were assembled using a "Questionnaire Form" and the "Motivation Sources and Problems Scale". Frequency, percentage, arithmetic mean values, and the chi-square, independent group Student t-test, Mann Whitney U, ANOVA, and Kruskal Wallis tests were used for data analysis. Students' mean scores were 41.06 ± 7.17 on the intrinsic motivation sub-dimension, 20.27±3.15 on the extrinsic motivation sub-dimension, and 25.08 ± 6.76 on the negative motivation sub-dimension, with a mean overall score of 86.41 ± 12.73. It is found that 91.5% of students had chosen their profession of their own volition and that 66.4% regarded their profession as important. In conclusion, students' intrinsic and extrinsic motivation levels were high, while negative motivation was low. Helping others, ease of finding employment, and selecting their professions of their own volition affect students' professional motivation. Students also thought that the working hours were not excessively demanding and wished to engage in their professions after graduation.
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