Results 91 to 100 of about 79,646 (225)

Regional price targets appropriate for advanced coal extraction [PDF]

open access: yes
A methodology is presented for predicting coal prices in regional markets for the target time frames 1985 and 2000 that could subsequently be used to guide the development of an advanced coal extraction system.
Terasawa, K. L., Whipple, D. M.
core   +1 more source

English for Study and Work: Coursebook in 4 books. Book 2 Obtaining and Processing Information for Specific Purposes [PDF]

open access: yes, 2015
Подано всі види діяльності студентів з вивчення англійської мови, спрямовані на розвиток мовної поведінки, необхідної для ефективного спілкування в академічному та професійному середовищах.
Зуенок, И. И.   +15 more
core  

Application Research of Cognitive Radio Technology in Coal Mine Underground

open access: yesGong-kuang zidonghua, 2010
In order to solve the problem of bad reliability of data transmission of wireless communication system of coal mine underground because the system's parameters such as carrier frequency,modulation mode are settled and so it ca't adapted to change of ...
TANG Liang, ZHANG Shen, GAN Ling, DU Ya
doaj  

Application of protection means against explosions in underground mines [PDF]

open access: yes, 2012
Underground coal mines explosions generally arise from the inflammation of a methane/air mixture. This explosion can also generate a subsequent coal dust explosion. Traditionally such explosions have being fought eliminating one or several of the factors
Garcia Torrent, Javier   +3 more
core  

Mining revival [PDF]

open access: yes, 2010
In relation to its size the United Kingdom (UK) is remarkably well-endowed with mineral resources as a result of its complex geological history. Their extraction and use have played an important role in the development of the UK economy over many years ...
Lusty, Paul
core  

Final geological and mining exploration and reasons for the brown coal mine Laško closure

open access: yesGeologija, 2003
Final surface and underground geological and mine exploration data of the brown coalmine LaŠko are presented. The data refer to the period between 1978 and 1990 when most intensive and systematic exploration took place.In more than 225 years of activity,
Ivan Strgar
doaj  

User guide for the BGS Methane and Carbon Dioxide from Natural Sources and Coal Mining Dataset for Great Britain [PDF]

open access: yes, 2011
This report presents a description and review of the methodology developed by the British Geological Survey (BGS) to produce an assessment of the potential hazard from Methane and Carbon Dioxide from Natural Sources and Coal Mining in Great Britain.
Appleton, J.D.
core  

Research of wired broadband information transmission of coal mine underground

open access: yesGong-kuang zidonghua, 2013
The paper pointed out that realization of unattended operation of fixed workplace of coal mine underground and limited worker operation of fully mechanized mining face and fully mechanized caving face needs to establish control system of coal mine with ...
SUN Ji-ping
doaj  

Assessment of the Dust in Underground Coal Mine

open access: yesApplied Sciences
This paper considers extreme dusty conditions at workplaces in underground coal mine. These extreme conditions stem from various physical factors that affect employees’ performance. The extreme effect of the dust can significantly contribute to permanent health damage or even the death of employees.
Eva Sventeková   +3 more
openaire   +2 more sources

An improved and advanced method for dehazing coal mine dust images

open access: yesScientific Reports
Due to the lack of underground space and lighting in coal mines, coal mine images suffer from low contrast, poor clarity and uneven brightness, which severely obstacles the visual task achievement in underground coal mines. Since the coal mine dust image
Pingping Cao   +4 more
doaj   +1 more source

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