Parası kalmadığı için otobüse binemiyordur ailesi porno izle ona daha yeni para gönderdiği için tekrar porno istemeye utanınca mecburen otostop çekmek için youporn çantasını alarak yol kenarına gelir etekli porno liseli türk kız yol kenarında dururken yanına yaklaşan porno kibar bir gencin onu gideceği yere kadar bırakmak porno izle istemesine çok mutlu olur arabaya bindiklerinde gideceği yer ile porno arabayı kullanan adamın gittiği yer arasında çok mesafe sex izle farkı olduğunu anlayan türk kız bu yaptığı porno indir iyilik karşısında arabada ona memelerini açar porno sapıklaşan adam yol kenarındaki hotelde durarak porno izle üniversiteli otostop çeken türk kızına odada sakso çektirip sikerAssessment of Natural Radioactivity in Clay Samples of Tiruvannamalai Dist, Tamilnadu, India and their Associated Radiation Hazards| Abstract

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Abstract

Assessment of Natural Radioactivity in Clay Samples of Tiruvannamalai Dist, Tamilnadu, India and their Associated Radiation Hazards

Author(s): Y. Raghu, R. Ravisankar, A. Chandrasekaran, P. Vijayagopal and B. Venkatraman

Due to increased global demand for clay, the present work involves the use of gamma ray spectrometry for the measurement of concentrations of natural radionuclides in clay samples. The activity concentration of 226Ra, 232Th and 40K were determined in 32 clay samples collected from Tiruvannamalai district, Tamilnadu by using NaI(TI) detector. The activity concentration of these radio nuclides is compared with world average values. The radiation exposure risk due to natural radionuclides, as a result of the use of clay as raw materials in construction, the radiation hazard indices such as radium equivalent activity (Raeq), criteria formula (CF) and the external hazard index (Hex) due to internal exposure to radio nuclides distributed in clay samples have been computed. From the analysis, clay samples could be used as a raw material for brick industry and clay data are useful to those dealing with clay applications.


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