SCIENCE AND TECHNOLOGY OF METALS
ISSN 1859-4344 | Publishing licence No 1481/GP-BTTTT
Editor-in-Chief
Assoc. Prof. Dr. Dao Hong Bach
Editorial Board
Prof. Dr. Do Minh Nghiep
Dr. Nguyen Van Sua
Secretary of Editorial Office
Assoc. Prof. Dr. Trinh Van Trung
Scientific Board
Prof. Dr. Do Minh Nghiep (President); Dr. Dao Duy Anh; Assoc. Prof. Dr. Dao Hong Bach; Assoc. Prof. Dr. Duong Ngoc Binh; Assoc. Prof. Bidulsky Robert; Eng. Pham Chi Cuong; M.A. Nghiem Xuan Da; Prof. Dr. Nguyen Trong Giang; M.A. Chu Duc Khai; Prof. Kvackaj Tibor; Assoc. Prof. Dr. Tran Quoc Lap; Prof. Matsuda Kenji; Assoc. Prof. Dr. Dao Minh Ngung; Assoc. Prof. Dr. Doan Dinh Phuong; Assoc. Prof. Dr. Nguyen Hoanh Son; Dr. Nguyen Van Sua; Prof. Dr. Sc. Nguyen Van Thai; Prof. Dr. Truong Ngoc Than; Assoc. Prof. Dr. Tran Quoc Thang; Prof. Zaba Krzysztof

Issue 60

FACTS

2 VII Congress of VUSTA for term 2015-2020

5 Dao Hong Bach: Meeting and workshop in honor of the 49th anniversary of the Vietnam Science and Technology Association for Foundry and Metallurgy

NEWS

8 DHB: Beginning scena of metallurgy with metals and ores in the Neolithic period

16 Nuclear materials syllabus at Hanoi University of Science and Technology

19 Nguyen Van Sua: China – Vietnam Steel Trade

21 Truc Thon join-stock company: Effective investment to extend production scale and to improve product quality of the Truc Thon join-stock company

24 VFMSTA: News from the world’s steel market

28 Nguyen Van Sua: Viet nam steel industry in the first quarter of 2015

RESEARCH

37 Nguyen Van Dan, Nguyen Van Thuc, Luong Thi Quynh Anh: Effect of crystal size on magnetic properties of nano-ferrite Zn_0.64Ni_0.36Fe₂O₄

42 Pham Duc Thang, Le Hong Duyen, Ngo Huy Khoa, Nguyen Trung Kien, Do Nguyen Huy Tuan: Influence of processing factors on direct dissolving of Ni sten powder in sulphate solution at high temperature and under high pressure

ENVIRONMENT

48 Nguyen Duc Khien: Types of water pollution and its source