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maan 17 Jun 19
برنامج رائع ومهم جداضياء 12 Feb 20
جيدmokhtar 2 Apr 20
اتمنى ان استطيع كسف الانتحال في رسالتيMERVAT 12 Aug 20
الله يكرمك انا عايزة اشتريه لو حد يعرف يوصلنيصعوبة في التحميل 10 Nov 20
privateرباح حسن 2 Jan 21
برنامج رائعحيدر 27 Mar 21
هلوarbi 15 Jun 21
bienاوجد مدلول عباس 30 Jan 22
شكراً جزيلاً لكمعلي سالم احمد 3 Apr 22
used materialsnuclear trace detector
A soft, thin sponge was used to close the nozzle of the cup in order to prevent the arrival of thoron gas with a short half-life to the detector, and leave the radon gas to reach the detector at a height of 150 cm, the average height of the individual for a month, after which it is lifted from the measurement site to note that when alpha particles fall from the decomposition of alpha particles Radon gas on these plastic detectors, it creates traces or points on them that are not seen with the naked eye, so these reagents are subjected to chemical treatment with sodium hydroxide of a specific concentration and heated for a certain period until they grow up and the effects left by alpha particles appear and can be counted by microscope. Where 13 detectors were in the city of Tuz Khurmatu1