Meslek Yüksekokulları
Vocational Schools
https://hdl.handle.net/20.500.12294/1384
2024-03-19T11:49:31Z
2024-03-19T11:49:31Z
Assessment of Be-7, Pb-210 and Po-210 Activities in Airborne Particulate Matter Over Istanbul, Turkiye
Ayan, Esin
Sezer, Narin
Sikdokur, Ercan
Kilic, Onder
Belivermis, Murat
https://hdl.handle.net/20.500.12294/4059
2024-02-16T15:31:26Z
2024-01-01T00:00:00Z
Assessment of Be-7, Pb-210 and Po-210 Activities in Airborne Particulate Matter Over Istanbul, Turkiye
Ayan, Esin; Sezer, Narin; Sikdokur, Ercan; Kilic, Onder; Belivermis, Murat
Airborne particulate matter is one of the air pollutants which can have detrimental health effects in the human body. Radionuclides adsorb onto air particles and make their way to humans primarily through inhalation. Naturally-occurring radionuclides, 210Pb and 210Po, are of notable health concern due to their relatively elevated ingestion and inhalation doses. In the current study, activity concentrations of 7Be, 210Pb and 210Po were determined in air particulate matter (PM). PM2.5 was collected on the European side, while PM10 was collected on the Anatolian side of Istanbul. Be-7, 210Pb and 210Po activities were found to be 5.17 ± 2.35, 0.96 ± 0.42; 0.25 ± 0.14 mBq m− 3 in Anatolian side, respectively. Be-7, 210Pb and 210Po activities were found to be 3.81 ± 2.27, 0.62 ± 0.29, 0.29 ± 0.26, mBq m− 3 in European side, respectively. The ratio of 210Po/210Pb was found to be higher (0.47 ± 0.31 for PM2.5 and 0.34 ± 0.27 for PM10) than the global average of 0.1. This result can be explained by the fact that Po is more volatile than Pb and enhanced in the air by the combustion process. Inhalation dose rates of 210Pb and 210Po due to PM10 exposure were calculated to be 7.70 ± 3.30 and 4.05 ± 2.31 µSv year− 1, respectively. Pb-210 bioaccessibility was assessed by the extraction of the particles in simulated lung fluids. Approximately 24.8% of inhaled 210Pb was estimated to be bioaccessible. This study suggests that 210Po and 210Pb activities are partially enhanced in the air particles in Istanbul and should be regularly monitored. © 2024, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.
2024-01-01T00:00:00Z
Destination attributes on attendance at away football games
Ozdemir, Meltem Altinay
Cakici, Celil
Tombas, Zeynep
https://hdl.handle.net/20.500.12294/4000
2023-12-25T15:31:22Z
2023-01-01T00:00:00Z
Destination attributes on attendance at away football games
Ozdemir, Meltem Altinay; Cakici, Celil; Tombas, Zeynep
This study aims to explain destination attributes that affect football fans' attendance at away games using a sequential method design. The research developed a scale through a six-phase process, including item pool preparation, expert opinion, first pilot test, second pilot test, third pilot test, and fourth pilot test. Firstly, a 17-item pool was comprised. Secondly, the item pool was applied to sports experts, and refined. Thirdly, EFA and CFA were conducted, and a 13-item pool was obtained in a four-dimensional structure. These factors were named as attractions, prices, basic services, and ease of transportation. In the fourth, fifth, and sixth studies, this dimensional structure was confirmed. The study found that ease of transportation, basic services, prices, and attractions of destinations affect fans' participation in away football games, respectively. This research contributes to football theory and sports tourism, highlighting the term 'tourist-fan', a term rarely examined in previous studies.
2023-01-01T00:00:00Z
Po-210 activity concentrations in wild and farmed fish from the Aegean Sea and Sea of Marmara and dose assessment to consumers
Sezer, Narin
Nural, Eren
Kesiktas, Mert
Yemisken, Emre
Gonulal, Onur
Eryilmaz, Lutfiye
Carvalho, Fernando P.
Blivermis, Murat
Kilic, Onder
https://hdl.handle.net/20.500.12294/3966
2023-11-07T15:31:12Z
2023-01-01T00:00:00Z
Po-210 activity concentrations in wild and farmed fish from the Aegean Sea and Sea of Marmara and dose assessment to consumers
Sezer, Narin; Nural, Eren; Kesiktas, Mert; Yemisken, Emre; Gonulal, Onur; Eryilmaz, Lutfiye; Carvalho, Fernando P.; Blivermis, Murat; Kilic, Onder
Polonium (Po-210) is the major contributor (with approximately 90%) to the radiation dose from radionuclides contained in the human diet, and it is mostly associated with seafood. This study presents Po-210 activity concentrations in the tissues of 16 fish species from the Aegean Sea and Sea of Marmara. Among all species investigated, the highest Po-210 activity concentration was 4450 & PLUSMN; 33 Bq kg(-1) dry weight (dw) in the digestive tract of anchovy (Engraulis encrasicolus), and the lowest Po-210 activity concentration was 1.3 & PLUSMN; 0.6 Bq kg(-1) (dw) in the muscle tissue of the thornback ray (Raja clavata). Significant differences in Po-210 concentrations were consistently found among the tissues of fish (P < 0.05). In general, the prominent accumulation of Po-210 was observed in the digestive tract and liver while the muscle tissue generally displayed the lower concentrations. Polonium concentrations in the internal organs, such as muscle and liver, were related to the feeding ecology of fish and thus are a consequence of Po-210 transfer in the food chain rather than Po-210 uptake from water. The average Po-210 concentration in fish filet was 54.1 Bq kg(-1) dw and to attain the recommended limit for the annual committed effective dose (1 mSv year(-1)) would require the consumption of 1024 kg of mixed fish filet in 1 year, which is unlikely to happen. The highest Po-210 activity concentration in the edible part of fish (filet) was determined in the anchovy (E. encrasicolus) but to reach the 1 mSv year(-1) limit would require still the consumption of 7.1 kg year(-1) of anchovy filet. Similar size specimens of wild and farmed fish, Dicentrarchus labrax and Sparus aurata, were analyzed to assess the differences in Po-210 concentrations. Polonium concentrations in the wild fish were several-fold higher than in farmed specimens, these ones fed with fish feed with Po-210 content lower than natural food in the sea. Therefore, the current trend of increasing the consumption of seafood from aquaculture seems to be reducing the radiation exposure to Po-210 in the human diet that is considered beneficial to public health.
2023-01-01T00:00:00Z
Validity and Reliability of the Turkish Version of the Spirituality Instrument-27 (SpI-27©)
Bingol, Berfin
Yilmaz, Medine
Weathers, Elizabeth
https://hdl.handle.net/20.500.12294/3965
2023-11-07T07:46:28Z
2023-01-01T00:00:00Z
Validity and Reliability of the Turkish Version of the Spirituality Instrument-27 (SpI-27©)
Bingol, Berfin; Yilmaz, Medine; Weathers, Elizabeth
Introduction: This methodological study aimed to adapt the Spirituality Instrument-27 (SpI-27©) to the Turkish language and culture. Design: The psychometric study was carried out with 267 individuals who were hospitalized in the cardiology clinic and who were diagnosed with a chronic disease. Data collection tools were the demographic questionnaire and the SpI-27©. The Statistical Package for Social Sciences was used for data analysis and confirmatory factor analysis. Results: The Kaiser–Meyer–Olkin index was 0.848 and Bartlett's test of sphericity was statistically significant (p = 0.000). The root mean square error of approximation was 0.05, the standardized root mean squared residual was 0.04, the adjusted goodness-of-fit index was 0.87, the goodness-of-fit index was 0.92, the nonformed fit index was 0.91, and the comparative fit index was 0.90. Connectedness with others accounted for 38.24 of the total variance, self-transcendence accounted for 11.71, self-cognizance accounted for 10.56, and conservationism and belief accounted for 9.82 of the total variance (total variance was 70.34%). The highest item factor loading of the scale was 0.812 and the lowest one was 0.398. Cronbach's alpha coefficient of the scale was 0.927. Conclusion: This measurement tool will enable researchers to plan and implement nursing interventions accurately and effectively by assessing the spiritual needs of individuals with nonmalignant chronic diseases. The use of this tool in different languages can help diagnose the spiritual needs of nurses working with multicultural and multilingual patients. © The Author(s) 2023.
2023-01-01T00:00:00Z