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The Chernobyl Nuclear Power Plant (CNPP) accident occurred on April 26 of 1986, it is still an episode of interest, due to the large amount of radionuclides dispersed in the atmosphere. Caesium-137 ( 137 Cs) is one of the main radionuclides emitted during the Chernobyl accident, with a half-life of 30 years, which can be accumulated in humans and animals, and for this reason the impacts on population are still monitored today. One of the main parameters in order to estimate the exposure of population to 137 Cs is the concentration in the air, during the days after the accident, and the deposition at surface. The transport and deposition of 137 Cs over Europe occurred after the CNPP accident has been simulated using the WRF-HYSPLIT modeling system. Four different vertical and temporal emission rate profiles have been simulated, as well as two different dry deposition velocities. The model simulations could reproduce fairly well the observations of 137 Cs concentrations and deposition, which were used to generate the ‘Atlas of Caesium deposition on Europe after the Chernobyl accident’ and published in 1998. An additional focus was given on 137 Cs deposition and air concentrations over Turkey, which was one of the main affected countries, but not included in the results of the Atlas. We estimated a total deposition of 2–3.5 PBq over Turkey, with 2 main regions affected, East Turkey and Central Black Sea coast until Central Anatolia, with values between 10 kBq m − 2 and 100 kBq m − 2 . Mean radiological effective doses from simulated air concentrations and deposition has been estimated for Turkey reaching 0.15 mSv/year in the North Eastern part of Turkey, even if the contribution from ingestion of contaminated food and water is not considered, the estimated levels are largely below the 1 mSv limit indicated by the International Commission on Radiological Protection. [ABSTRACT FROM AUTHOR]

Background: Depression screening can improve identification and subsequent treatment of depression in general practice. Response of Turkish and Moroccan elderly is unknown., Objectives: (1) To assess the response of elderly Turkish and Moroccan general practice patients on a postal depression screening. (2) To trace reasons for non-response., Method: At 14 different primary care centres, elderly (55+) were screened with GDS-15. Turkish and Moroccan elderly were telephonically and house-to-house approached for tracing the reasons for non-response., Results: Response rate Dutch elderly (n=6060; 62%), Turks (n= 39; 31%) and Moroccans (n=117; 34%). Most important reason for non-response among Turkish elderly was "temporary other place of staying" (Turkey). Among Moroccans it was "illiteracy"., Conclusion: Response is very low by elderly migrants compared to Dutch elderly. The reasons for non-response implicate that other means to approach migrants' sub-populations should be sought.