Results 1 to 10 of about 14,293 (81)

Worldwide Developments in UCG and Indian Initiative [PDF]

Procedia Earth and Planetary Science, 2015
Concept of converting coal in-situ into gas has existed for many years. Basically it involves drilling a pair of wells into a coal seam and injecting gasifying agent like oxygen or air and steam through the Injector and after ignition and gasification of
Singh, R.P., Vyas, D.U.
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A Discussion on CO2 Sequestration in the UCG Space Based upon the Review of the UCG Residue Physicochemical Properties

Minerals, 2023
The strategic goal of “carbon peaking and carbon neutrality” has promoted further reform of the global energy system. Additionally, coal is still the dominate form of energy consumption. Underground coal gasification, which changes the method of coal utilization, is an important way to execute clean coal development and clean utilization, and is also ...
Run Chen, Fengrong Lv, Yunxia Bao, Fu Chen, Tianzheng Dou, Guanglong Tu   +5 more
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The Control of UCG Grammars [PDF]

, 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, Bès, Gabriel G.   +1 more
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Auxiliaries and clitics in French UCG grammar [PDF]

Proceedings of the third conference on European chapter of the Association for Computational Linguistics -, 1987
French auxiliaries and clitics have been analysed in the frame of U.C.G. (Unification Categorial Grammar). Concatenation of a functor sign and an adjacent argument sign is the basic operation of the model; unification allows (a) to verify if constraints on concatenation are respected; (b) to produce a flow of information between the functor sign and ...
Kray-Baschung, Karine, Bès, Gabriel G., Corluy, Annick, Guillotin, Thierry   +3 more
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Recent Development on Underground Coal Gasification and Subsequent CO2 Storage [PDF]

, 2015
Underground coal gasification (UCG) is the in-situ conversion of deep underground coal to synthesis gas for heating, chemical manufacturing and power generation. UCG has been the subject of extensive pilot testing but technical and environmental concerns
Böckenholt, U., Goldstein, D., Johnson, J., Russo, J., Schulte-Mecklenbeck, M., Sullivan, N., Willemsen, M.   +6 more
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Machine translation using isomorphic UCGs [PDF]

Proceedings of the 12th conference on Computational linguistics -, 1988
This paper discusses the application of Unification Categorial Grammar (UCG) to the framework of Isomorphic Grammars for Machine Translation pioneered by Landsbergen. The Isomorphic Grammars approach to MT involves developing the grammars of the Source and Target languages in parallel, in order to ensure that SL and TL expressions which stand in the ...
Pete Whitelock, John L. Beaven
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APPROACHES TO THE GAS CONTROL IN UCG

Acta Polytechnica, 2017
Underground Coal Gasification represents an alternative for conventional coal mining. This technology is also less expensive than traditional mining. It is expected that coal will be an important energy source in the coming decades. In requirement to improve the gasification process we must ensure that the combustion reactions generated enough energy ...
Karol Kostur, Jan Kacur
openaire   +4 more sources

Efficient Quantum Circuits for Schur and Clebsch-Gordan Transforms [PDF]

, 2004
The Schur basis on n d-dimensional quantum systems is a generalization of the total angular momentum basis that is useful for exploiting symmetry under permutations or collective unitary rotations. We present efficient (size poly(n,d,log(1/\epsilon)) for
Aram W. Harrow, C. Moore, Dave Bacon, Isaac L. Chuang, J. J. Sakurai, M. Hayashi, M. A. Nielsen, P. W. Shor, R. Beals, R. Goodman   +9 more
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Marginal AMP Chain Graphs [PDF]

, 2014
We present a new family of models that is based on graphs that may have undirected, directed and bidirected edges. We name these new models marginal AMP (MAMP) chain graphs because each of them is Markov equivalent to some AMP chain graph under ...
Jose M Pena, Jose M. Peña
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Perturbation evolution in cosmologies with a decaying cosmological constant [PDF]

, 1997
Structure formation models with a cosmological constant are successful in explaining large-scale structure data, but are threatened by the magnitude-redshift relation for Type Ia supernovae.
A. Albrecht, A. D. Linde, A. Dekel, A. E. Evrard, A. G. Riess, A. H. Guth, A. Nusser, A. R. Liddle, A. R. Liddle, A. R. Liddle, A. R. Liddle, Andrew R. Liddle, B. Chaboyer, B. Chaboyer, B. E. Schaefer, B. P. Schmidt, B. Ratra, B. Ratra, C. Hill, C. Hill, C. J. Copi, C. J. Copi, C. L. Bennett, C. S. Kochanek, C. Wetterich, C. Wetterich, D. A. Buote, D. A. White, D. Branch, D. Branch, D. Wands, E. F. Bunn, E. F. Bunn, E. L. Wright, E. M. Lifshitz, F. Bernardeau, F. C. Adams, F. Lucchin, G. F. Smoot, H. Kodama, H. Kodama, H. Kodama, I. N. Reid, J. A. Frieman, J. Carvalho, J. D. Barrow, J. Hwang, J. Hwang, J. Hwang, J. Hwang, J. Hwang, J. Hwang, J. Hwang, J. Hwang, J. M. Bardeen, J. M. Bardeen, J. Mould, J. P. Ostriker, K. Coble, K. Freese, K. Freese, L. F. Abbott, L. F. Bloomfield-Torres, L. M. Krauss, L. M. Krauss, M. Birkel, M. Hamuy, M. Reuter, M. S. Turner, M. Salaris, M. W. Feast, M. Özer, N. R. Tanvir, N. Sugiyama, N. Sugiyama, N. Weiss, P. J. E. Peebles, P. J. Steinhardt, P. Ruiz-Lapuente, P. T. P. Viana, Pedro T. P. Viana, R. Jimenez, R. Jimenez, R. Stompor, S. D. M. White, S. M. Carroll, S. Perlmutter, S. Weinberg, V. F. Mukhanov, W. Chen, W. L. Freedman, Y. Yoshii   +91 more
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