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27 799 (0,093s)

Výsledek výzkumu

The extraction probe for the coal powder sampling from the coal powder supply line

The extraction probe was developed for the continuous coal powder sampling from the coal supply line. The sample can be used for on-line or off-line determination of the size distribution function. The extraction p...

JE - Nejaderná energetika, spotřeba a užití energie

  • 2011
  • Gfunk
Výsledek výzkumu

Application of microwave radiation at coal treatment processes

This article presents a new approach to evaluation of coal with implementation microwave extraction of powders. Coal is the most abundant hydrocarbon resource on earth in Slovakia. The microwave extraction of Handl...

DM - Tuhý odpad a jeho kontrola, recyklace

  • 2014
  • Jx
Výsledek výzkumu

NMR analysis og extract of altered coals

The article deals with 1H a 13C NMR analysis of extracts of coals modified naturally or in laboratory. In the extracts, aliphatic and aromatic hydrocarbons and carboxylic acids were found....

CB - Analytická chemie, separace

  • 2001
  • Jx
Výsledek výzkumu

Extraction of Inorganic Species of Coal: a Review.

The review "Extraction of inorganic species of coal" covers: a) new information concerning the water soluble mineralization, ions adsorbed on the coal surface, chemical elements bonded in organic and mineral parts of co...

DD - Geochemie

  • 2011
  • C
Výsledek výzkumu

Effect of the Mechanochemical Activation for the Extraction of Diterpenes from the Brown Coal

Effect of the Mechanochemical Activation for the Extraction of Diterpenes from the Brown Coal...

CB - Analytická chemie, separace

  • 2007
  • Jx
Výsledek výzkumu

Experimental and Mathematical Modelling of a Geohydraulic changes Prognosis due to Coal Extraction.

Original scientific paper dealing with Experimental and Mathematical Modelling of a Geohydraulic changes Prognosis due to Coal Extraction....

DA - Hydrologie a limnologie

  • 1999
  • D
Výsledek výzkumu

Sequential extraction of coal and unburned carbon from circulating fluidised-bed power stations

This work deals with modes of occurrence of Cu, Co, As, Ni, Pb, As and Se in coal and unburned carbon - waste material present in ash after coal combustion at fluidised-bed power stations. Associations of these elements were determi...

DH - Báňský průmysl včetně těžby a zpracování uhlí

  • 2007
  • Jx
Výsledek výzkumu

Extraction Processes in Isolation of Diterpenes from Coal

The paper deals with the extraction of a tetracyclic diterpene from Slovak sub-bituminous coal. The extraction procedures used were Soxhlet, microwave-assisted to determine the efficiency of extraction procedures. ...

CC - Organická chemie

  • 2013
  • Jx
Výsledek výzkumu

THE USE OF COAL GAS AS A FUEL SOURCE FOR METALLURGY

Coal is the largest source of fossil fuels on Earth. In the Czech Republic there are rich deposits of coal and methane, geologically verified in Beskydy. Currently in the Czech Republic it is considered the possibility of extrac...

JG - Hutnictví, kovové materiály

  • 2013
  • D
Výsledek výzkumu

The method of assessment of failure of the rigid strata overlying extracted coal seams with support of geoinformation technologies

extraction of minerals is mostly accompanied by deformations of the strata overlying extracted coal seams. Deformations of overlying layers run up to the surface where from the processes that take place in the strata overl...

DH - Báňský průmysl včetně těžby a zpracování uhlí

  • 2014
  • B
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