Results 131 to 140 of about 1,414,094 (335)
Governing electricity in South Africa: wind, coal and power struggles [PDF]
, 2011 South Africa’s electricity policy is at a crossroads. Its historical dependence on cheap coal for approximately 90 per cent of its electricity generation is under threat.
Baker, Lucy
core
Interface Controlled Electric Field Swing Adsorption
Advanced Science, EarlyView.Swing adsorption of Ar, N2, and CO2 under moderate electric fields and elevated pressures at room temperature is investigated. Multiple charged conductor‐insulator interfaces enable a selective adsorption behavior of the three gases while CO2 shows a 10 fold increase in the effect over Ar and N2.
Silvio Heinschke, Jörg J. Schneider
wiley +1 more source
The effect of hard coal density on its flotation performance [PDF]
Acta Montanistica Slovaca, 2005 Hard coal flotation depends on many factors, one of which is the density of the grains floated. The heavier the grain, the greater the gravitational force that counteracts the force of adhesion between the grain and an air bubble, and the lower the ...
Ewa Małysa
doaj
Nihon Kikai Gakkai ronbunshu, 2015 This paper reports a numerical investigation of the motion of spherical and non-spherical particles with/without gas blowing-out in a vertical uniform flow. A sphere, spheroid and pulverized coal particle are targeted in this study.
Wei ZHANG +4 more
doaj +1 more source
The History of Anthracite Coal in Nature and Art [PDF]
, 1883 James S. Lippincott
openalex +1 more source
Coal-shale interface detector [PDF]
, 1980 A coal-shale interface detector for use with coal cutting equipment is described. The detector consists of a reciprocating hammer with an accelerometer to measure the impact of the hammer as it penetrates the ceiling or floor surface of a mine ...
Reid, H., Jr.
core +1 more source
Advanced Science, EarlyView.An invert‐structured vapor condensation device coupled with solar evaporators featuring special vertically aligned vapor diffusion channels is developed to target both high evaporation and water collection rates. By minimizing the optical loss caused by condensed water and speeding up the dropwise condensation process, it achieves a record‐high water ...
Bingxing Wu +6 more
wiley +1 more source
Grindability of Coal – the new approach [PDF]
Acta Montanistica Slovaca, 2005 The method of evaluation of grindability of hard coal and its blend is shown. The standard Hardgrove test is used as a base to work out this method. The essence of this method consists in the simulation of the milling process in a close circuit (mill ...
Barbara Tora
doaj
Distribution of certain minor elements in Alaskan coals [PDF]
, 1968 Seventy-five samples of coal from Northern Alaska, Jarvis Creek, Nenana, Matanuska, Kenai and Bering River Coal Fields were analyzed by quantitative spectrochemical procedures f o r lead, gallium, copper, barium, beryllium, nickel, titanium, vanadium ...
Rao, P.D.
core
Advanced Science, EarlyView.A supramolecular polymer network is constructed through the assembly of metal‐coordinated nanoparticles induced by the crosslinking of dynamic covalent disulfide bond. The resulting supramolecular adhesive exhibited excellent adhesion performance, including strong adhesion strength, exceptional solvent resistance, and distinct reversible adhesion ...
Yanyan Guo +3 more
wiley +1 more source