Cytogenetic effects of (99)technetium on meristematic cells of root tips of Vicia faba L. andstatistical comparison

WOS: 000358644500006In this study, cytogenetic effects of (99)technetium (Tc-99) on meristematic cells of root tips belonging to Vicia faba L. have been investigated. Seeds of the plant were prepared and kept in Tc-99 standard for different time periods: 1/12, 1/4, 1/2, 1, 2, 3, 4, 5, 6 and 12 h. Seeds treated with Tc-99 were sprouted and the root tips obtained were prepared for microscopic examination. Some abnormalities e.g. chromosome breaking, chromosome dispersion, bridge chromosomes, chromosome adherence and ring chromosomes were observed. Abnormalities seen for each treatment depended on the time period. The variety and number of abnormalities usually increased with increased treatment time. The results obtained were evaluated statistically

The evaluation of urine activity and external dose rate from patients receiving radioiodine therapy for thyroid cancer

The aim of this study was to determine the external dose rate of iodine retention as a function of time in the bodies of thyroid cancer patients during their isolation period in the hospital. Urine samples were collected at 6th, 12th, 18th, 24th h and 2nd, 3rd, 4th, 5th d from 83 patients after oral administration of I-131 and counted. The external dose rates were also simultaneously determined at the same time points. Then, it was expressed as retained radioiodine body activity versus dose rate. Effective half life calculated from urine sample measurements was found as 18.41.8 h within the first 24 h and 642.7 h between 48 and 120 h. According to this results, the external dose rate (20 Sv h(1)), which patients could be discharged, was achieved after 48 h for 3700 and 5550 MBq, and after 72 h for 7400 MBq of I-131 treatments

Determination of radioactivity levels in Akhisar, Gordes, Golmarmara and Sindirgi regions, Western Turkey

WOS: 000330780800008In this study, radioactivity measurements in the environment of Akhisar, Golmarmara, Gordes and Sindirgi regions in Western Turkey were investigated in order to evaluate the implications of any excess radioactivity in the environment of geological formation. The radioactivity concentrations of K-40, U-238 and Th-232 radionuclides in the soil samples were measured by a NaI(Tl) gamma spectrometer system, and the radium activity concentrations in the water samples were also analyzed by an ZnS(Ag) alpha counter by the collector chamber method. The radioactivity of K-40, U-238 and Th-232 in soils ranged 2.80-2,347.77, 9.90-256.19 and 9.66-106.53 Bq kg(-1), respectively. The activity of Ra-226 in the water samples ranged from 0.03 Bq L-1 (0.89pCi/L) to 0.80 Bq L-1 (21.58pCi/L). In addition, the external terrestrial gamma dose rate in air (nGy h(-1)), annual effective dose rate (mSv year(-1)) and radium equivalent activity (Bq kg(-1)) were calculated and compared with international standard values.Celal Bayar University Scientific Research Projects Coordination (BAP)Celal Bayar University [2010/10]In this study, Celal Bayar University Scientific Research Projects Coordination (BAP) No. 2010/10 with the Project is supported