No. 2 (2025): Năm thứ XXXIV

View No. 2 (2025): Năm thứ XXXIV

Published: 2025-05-28

MINING

Application of analytical hierarchy method (AHP) and fuzzy theory in selecting methods for mining of medium-thick steep coal seames

Ngoc Van Ngo, Dong Wang, Thang Duc Pham

4-12

MINERAL BENEFICIATION AND PROCESSING

Experimental use artifical sand from mines waste rocks combined with fly ash of thermal power plant in concrete manufacuring for construction and development of circulating economy

Nhan Thi Pham, Linh Chi Pham

13-21

MECHANICAL ENGINEERING, ELECTRICITY- ELECTRONICS - AUTOMATION

Improved method of manufacturing automotive cooling fan blades by centrifugal casting method

Dinh Vu Dang, Lien Thi Dang

22-32
Research on design of centrifugal pump with head up to 100 m mounted on CAD773E chassis, using hydraulic motor, serving water spraying to suppress dust in Quang Ninh coal area

Tuan Minh Nguyen, Tuan Quoc Nguyen

33-40
Calculation method for gear milling when the number of teeth isa prime number on 5 types of gear hobbing machine

Hai Ngoc Tran

41-47
Research on harmonic wave suppression model of underground mine local fan output using permanent magnet synchronous motor

Phuc Huu Tran, Tuyen Thanh Tran, Phan Huu Tran

48-57

VENTILATION, SAFETY AND ENVIRONMENTAL PROTECTION

Building the map of the distribution of some air quality parameters in Quang Ninh province from Sentinel 5P TROPOMI satellite data

Hung Le Trinh

58-65

GEOMECHANICS, GEOMATICS, GEOLOGY, GEODESY

The role of geological factors in controlling primary gold ore in the Tam Ky - Phuoc Son belt

Khang Quang Luong, Truong Le Xuan, Thanh Xuan Ngo, Hien Thu Bui

66-73
Proposed method to determine the center and axis of mine shaft for monitoring deformation and geometric parameter inside the shaft

Dung Ngoc Vo

74-77

ECONOMICS, MANAGEMENT

Some challenges in implementing the national energy master plan – Referring to experiences from APEC countries

Huy Quoc Phung

78-86