The objectives of the thesis is: Determination of the concentration of the Naturally Occurring Radioactive Materials (NORM) in some building materials commonly used in Lao PDR such as cement, sand, etc. by gamma spectrometers using NaI(Tl) and HPGe detectors. | MINISTRY OF EDUCATION AND TRAINING VIETNAM ACADEMY OF SCIENCE AND TECHNOLOGY GRADUATE UNIVERSITY SCIENCE AND TECHNOLOGY ---------------------------- SONEXAY XAYHEUNGSY PROJECT NAME ASSESSMENT OF NATURAL RADIOACTIVITY IN SOME BUILDING MATERIALS USED IN LAOS PDR Major ATOMIC AND NUCLEAR PHYSICS Code 9440106 SUMMARY OF DOCTORAL THESIS OF MATERIALS SCIENCE HANOI - 2019 The doctoral thesis was completed at Institute of Physics Graduate University of Science and Technology Supervisors Prof. Dr. Le Hong Khiem Reviewer 1 Reviewer 2 Reviewer3 This doctoral thesis will be defensed at Graduate University of Science and Technology Vietnam Academy of Science and Technology on hour date . month year The dissertation can be referred at National Library of Vietnam LIST OF PUBLISTIONS 1. Sonexay Xayheungsy Le Hong Khiem. Measurement of natural radioactivity in some cements of Lao PDR by using NaI Tl gamma-ray spectrometer Advance in applied and engineering Physics IV Publishing House for Science and Technology 2016 231 2. Sonexay Xayheungsy Le Hong Khiem Phương pháp xác định hoạt độ của các nguyên tố phóng xạ tự nhiên bằng phổ kế gamma dùng detector NaI Tl Advance In Applied And Engineering Physics V Publishing House for Science and Technology 2018 295 3. S. Xayheungsy . Khiem . Nam Radiation dose estimation of cement samples used in Lao PDR Communications in Physics 27 No. 3 2017 193-203. 4. Sonexay Xayheungsy Le Hong Khiem Le Dai Nam. Assessment Of The Natual Radioactivity And Radiological Hazards In Lao Cement Samples. Radiation Protection Dosimetry 2018 Vol. 181 No. 3 208 213. 5. Sonexay Xayheungsy Le Hong Khiem. Natural Radioactivity In The Soil Of Thoulakhom District In Vietiane Province LaoPDR Tạp Chí Phát Triển Khoa Học Và Công Nghệ- Đại Học Quốc Gia TP. HCM ngày 21 tháng 3 năm 2018. 6. Assessment of Natural Radioactivity Levels and Radiation Hazards of Building Materials of Lao PDR. International Journal Of Modern Engineering Research .