Results 111 to 120 of about 70,133 (264)

Rock magnetic and geochemical evidence for authigenic magnetite formation via iron reduction in coal-bearing sediments offshore Shimokita Peninsula, Japan (IODP Site C0020) [PDF]

open access: yes, 2017
Sediments recovered at Integrated Ocean Drilling Program (IODP) Site C0020, in a fore‐arc basin offshore Shimokita Peninsula, Japan, include numerous coal beds (0.3–7 m thick) that are associated with a transition from a terrestrial to marine ...
Clyde, William C.   +6 more
core   +1 more source

The \u3csup\u3e13\u3c/sup\u3eC-NMR Solid State Spectroscopy of Various Classes of Coals [PDF]

open access: yes, 1978
The 13C-NMR spectra of various classes of coal obtained in the solid state show two resonances, one of which is assigned to aromatic carbon and the other to aliphatic carbon. The resonances are very broad with the high field resonance centered at about 7
Haworth, Daniel T., Wilkie, Charles A.
core   +1 more source

Catalytic Hydroconversion of Model Compounds over Ni/NiO@NC Nanoparticles

open access: yesMolecules
The conversion of lignite into aromatic compounds by highly active catalysts is a key strategy for lignite valorization. In this study, Ni/NiO@NC nanocomposites with a high specific surface area and a vesicular structure were successfully prepared via a ...
Ting Liu   +7 more
doaj   +1 more source

A STATISTICAL ANALYSIS OF THE NORTH DAKOTA LIGNITE ENERGY INDUSTRY'S CONTRIBUTION TO THE STATE ECONOMY FOR 1997 AND PROJECTED FOR 1998 [PDF]

open access: yes
This report provides estimates of the lignite industry's contribution to the North Dakota economy, using key economic indicators such as retail trade activity, personal income, total business activity, employment, and tax revenues.
Coon, Randal C., Leistritz, F. Larry
core   +1 more source

Topographic Development History of the Alaska Range [PDF]

open access: yes, 2013
he overall goal of this project is to use variations in sediment source through time as a proxy for deciphering the uplift history of the Alaska Range (Fig. 1).
Davis, Kailyn
core  

Analiza wrażliwości wielkości i parametrów wyrobiska docelowego kopalni węgla brunatnego na zmianę ceny bazowej węgla [PDF]

open access: yes
Sensitivity analysis of lignite ultimate pit size and its parameters on change of lignite base price The influence of lignite base price on the size of ultimate pit (lignite supply) and decrease of lignite quality (decrease of calorific value and ...
Jurdziak, Leszek, Kawalec, Witold
core   +1 more source

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