1. (F)Tran Thi Minh Hoan minhhoan3017@gmail.com; HCM Univ. of Science 2. (F) Nguyễn Thi Minh Hien, Researcher at Center for Application of Nuclear Technique in Industry, Dalat 3. Nguyen Phu Huy, 2nd-year student at Univ. of Science and Technology of Hanoi 4. Huynh Quốc Thang, 2nd-year student at Univ. of Science and Technology of Hanoi 5. Dang Quoc Trieu, Researcher at Center for Application of Nuclear Technique in Industry, Dalat 6. (F) Nguyễn Thu Hang, 2nd-year master student at HCM Univ. of Education 7. Le Ba Thach, Bachelor of Nuclear Tech. from Hanoi Univ. of Science - Vietnam National University 8. (F) Nguyễn THi Nhung, Bachelor of Science from HCM Univ. of Science - Vietnam National University 9. (F) Nguyễn Thi Yên Binh, 2nd-year student at Univ. of Science and Technology of Hanoi 10. Nguyễn Duc Phu, 3rd-year student at Fulbright Univ., HCM 11. (F) Trinh Hoang Dieu Ngan, 2nd-year student at Univ. of Science and Technology of Hanoi