Coal mining

Xem 1-6 trên 6 kết quả Coal mining

Summary of PhD thesis Mechanics gynamics engineering: Study on the effects of some factors on longevity of cutting teeth on the drum of shearer used in underground coal mining in Quang Ninh area

Studying, analyzing and evaluating the basic factors affecting the wear resistance of the shear cutting drum, such as coal strength, the geometry of the cutting teeth, materials of cutting teeth, the cutting angle. Cutting depth, cutting feed and cutting speed are the basis for selecting the appropriate factors in fabrication, using the cutting teeth of the shearer.

27p closefriend09 16-11-2021 20 2 Download

Doctoral thesis summary Economic management: Research in innovaton of planification of coal mining companies in Vietnam national industries holding corporation limited

Build a feasible and scientific basis for the contents of inovation of planification of coal mining companies in Vinacomin in the current context.

27p trinhthamhodang1217 14-01-2021 25 4 Download

Summary of Doctor thesis: Research on improving economic - Technical efficiency of prop equipment using in underground coal mining in Quang Ninh area

Building basis of science and reality for economic - technical efficiency of PE using solutions in CM in Quang Ninh area, to make contribution to increase efficiency of coal production and coal business.

27p cothumenhmong6 17-07-2020 35 4 Download
Executive summary of PhD Dissertation: Accounting of fixed assets in coal mining enterprises of Vinacomin

The PhD thesis studies the theoretical and practical issues of fixed asset accounting in coal mining enterprises of Vinacomin. In particular, the thesis focuses on studying the principles of measuring, recording, presenting and providing information on fixed assets as well as the method to collect, process, analyze and provide information in respond to requirements of fixed asset management. The thesis studies the application of these principles in the practice of fixed asset accounting in Vinacomin's coal mining enterprises.

32p dungmaithuy 18-09-2019 25 3 Download
Đề tài : Electricity Pricing for North Vietnam

The rapid economic growth in Vietnam has resulted in an increasing demand for electricity. This in turn translates to a higher rate of coal resource extraction and consequent rise in pollution of water and land resources. This study estimated the environmental costs associated with the electricity demand requirements of the coal electricity sector, as a component of the long-run marginal opportunity cost (LR-MOC) of electricity production.

0p hailedangbs 02-05-2013 100 24 Download
Báo cáo lâm nghiệp: " Selected physical properties of initial soils on the outside spoil bank of the Bełchatów brown coal mine"

Tuyển tập những bài báo cáo nghiên cứu khoa học hay nhất được đăng trên tạp chí JOURNAL OF FOREST SCIENCE đề tài: Selected physical properties of initial soils on the outside spoil bank of the Bełchatów brown coal mine...

6p toshiba3 09-09-2011 34 4 Download