Results 101 to 110 of about 93,370 (205)
Reversal of fortune in a small, open economy: regional GDP in Belgium, 1896-2000. [PDF]
In this paper we present estimates of regional GDP per capita for certain benchmark years during the first half of the 20th century using the method proposed by Geary and Stark (2002).
Buyst, Erik
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California Methanol Assessment; Volume II, Technical Report [PDF]
, 1983 A joint effort by the Jet Propulsion Laboratory and the California Institute of Technology Division of Chemistry and Chemical Engineering has brought together sponsors from both the public and private sectors for an analysis of the prospects for methanol
Dutzi, E. +5 more
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EnergiesFast microwave pyrolysis technology can effectively convert brown coal into hydrogen-rich syngas. However, the unique pyrolysis behaviour of brown coal under microwave conditions is not fully understood in comparison with conventional pyrolysis.
Quan Sun +3 more
doaj +1 more source
Fossil resource depletion and climate change emissions: the role of physical constrictions [PDF]
In terms of global warming, early peak forecasts in oil and natural gas seem reasonably good news because most emissions arise from fossil fuel burning. However, this can be misleading if coal resources are as enormous as some estimations report because ...
Jordi Roca, Stephane Salaet
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Coal pump development phase 3 [PDF]
Techniques for achieving continuous coal sprays were studied. Coazial injection with gas and pressure atomization were studied. Coal particles, upon cooling, were found to be porous and fragile.
Gerbracht, F. G. +3 more
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Main factors that control roadway damage when a steeply dipping coal seam crosses a fault
Geomatics, Natural Hazards & RiskWhen the working face of a steeply dipping coal seam crosses a fault, the dynamic disturbance caused by the mining load induces fault activation, causing large deformation and failure of the roadway.
Hongwei Wang +5 more
doaj +1 more source
Gasification of Pine Wood Chips with Air-Steam in Fluidized Bed [PDF]
, 2015 Tato práce studovala vliv použití vzduchu a páry jako zplynovacího činidla ve zkapalňovacím generátoru plynu na vlastnosti vyprodukovaného plynu (oxid uhelnatý, vodík, obsah dehtu a nízká výhřevnost). Tato studie byla založena na experimentech které byly
Salami, Najdat
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Moving Beyond Concentrations: The Challenge of Limiting Temperature Change [PDF]
The UN Framework Convention on Climate Change shifted the attention of the policy community from stabilizing greenhouse gas emissions to stabilizing atmospheric greenhouse gas concentrations.
Manne, Alan S. +2 more
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Thermal transfer performance of downhole electric heaters for in-situ pyrolysis in tar-rich coal
Bulletin of the Polish Academy of Sciences Technical SciencesThe paper investigates the performance of a large-size helical baffle heater in an in-situ operation using a numerical simulation method. The study reveals that the fluid in the shell retains a spiral flow, and the output flow velocity is higher than in the surrounding area. However, the pitch design is big, resulting in a low-velocity flow zone on the
Ying Tang +7 more
openaire +1 more source
Problems and possibilities for East African economic integration [PDF]
, 1970 Presented at the Thirteenth Annual Meeting of the African Studies Association, Boston, MA -- October 21-24 ...
Seidman, Ann
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