Results 41 to 50 of about 27,111 (219)
Innovative aspects of underground coal gasification technology in mine conditions [PDF]
, 2018 Purpose. Development of innovative approaches in technological and technical solutions improvement for coal seam gasification. Methods. Carrying-out of native and world experience in the coal reserves development by underground gasification technology ...
Dychkovskyi, R +4 more
core +1 more source
, 1992 This article suggests that linguistic observations can be captured by an axiomatic system ; modelssatisfying the axioms can be compared with sentences specified by the grammars in order to controltheir descriptive adequacy. The authors show how this can be performed with a UCG type grammar.
Jurie, Pierre-François +1 more
openaire +2 more sources
Unifying Gaussian LWF and AMP Chain Graphs to Model Interference
, 2019 An intervention may have an effect on units other than those to which it was administered. This phenomenon is called interference and it usually goes unmodeled.
Peña, Jose M.
core +1 more source
Sensitivity analysis on UCG–CCS economics
International Journal of Greenhouse Gas Control, 2014 Abstract Underground coal gasification (UCG) facilitates the utilization of deep-seated coal seams that are economically not exploitable via conventional mining. A techno-economic model was developed to examine UCG cost effectiveness converting coal into a synthesis gas to fuel a combined cycle gas turbine power plant (CCGT) with subsequent CO2 ...
Nakaten, N., Azzam, R., Kempka, T.
openaire +4 more sources
AÇÃO DA MINERAÇÃO NA COBERTURA VEGETAL DE PIRENÓPOLlS
Revista do Instituto Florestal, 1992 Pirenópolis é um dos principais centros turísticos do Estado de Goiás, porém, a atividade econômica predominante neste município é a mineração, especificamente a explotação do quartzito.
Eliane Lopes
doaj +1 more source
Mixed RG Flows and Hydrodynamics at Finite Holographic Screen
, 2011 We consider quark-gluon plasma with chemical potential and study renormalization group flows of transport coefficients in the framework of gauge/gravity duality.
A Sever +38 more
core +2 more sources
A hashtag movement for independence: using Twitter to teach history
AtoZ: Novas Práticas em Informação e Conhecimento, 2015 Introduction: There are difficulties in understanding historical time. It is necessary that students stop seeing historic events in a one-dimensional way and see them by means of the actor's tale instead.
María Mercedes Zerega-Garaycoa
doaj +1 more source
Acta Scientiarum: Animal Sciences, 2008 O experimento foi conduzido com o objetivo de avaliar a degradabilidade in situ da matéria seca (MS), da fibra em detergente neutro (FDN) e da fibra em detergente ácido (FDA) do material original de quatro genótipos de sorgo (ATF53*9929036; ATF54*9929036;
Roberto Toledo de Magalhães +7 more
doaj +1 more source
Scientific Reports, 2023 Underground Coal Gasification (UCG) requires monitoring of the gasification area because the gasification process is invisible and the reaction temperature exceeds 1000 °C.
Akihiro Hamanaka +8 more
doaj +1 more source
Evaluation of Structural Changes in the Coal Specimen Heating Process and UCG Model Experiments for Developing Efficient UCG Systems [PDF]
Energies, 2013 In the underground coal gasification (UCG) process, cavity growth with crack extension inside the coal seam is an important phenomenon that directly influences gasification efficiency. An efficient and environmentally friendly UCG system also relies upon the precise control and evaluation of the gasification zone.
Faqiang Su +4 more
openaire +2 more sources