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Titlebook: New Trends in Coal Science; Yuda Yürüm Book 1988 Kluwer Academic Publishers 1988 Photochemistry.catalysis.chemistry.combustion.extraction

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楼主: Clique
发表于 2025-3-25 06:09:10 | 显示全部楼层
Aral Olcaybetroffenen Personen- und BerufsgruppenMit dem Universitätsstudiengesetz von 1997 sind die Weichen für eine umfassende und tiefgreifende Reform der Studien an den österreichischen Universitäten gestellt worden. Das Gesetz begnügt sich mit der Vorgabe von Rahmenbedingungen und überläßt die nähere Reg
发表于 2025-3-25 10:21:17 | 显示全部楼层
Aral Olcayäten gestellt worden. Das Gesetz begnügt sich mit der Vorgabe von Rahmenbedingungen und überläßt die nähere Regelung des Studienrechts den Studienplänen, die auf der Ebene der Universitäten und Fakultäten autonom zu beschließen sind. Künftig können der Aufbau und Inhalt desselben Studiums von Univer
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The Origin of Coalsor marsh. Coal formation has been a rare event in geological time, the principal eras in Europe and North America having been about 300 m. and 50–100m. years B.P. Major changes in plant anatomy took place between these two periods..The results of a recent multi-disciplinary study of profiles of five
发表于 2025-3-25 23:52:23 | 显示全部楼层
The Nature and Origins of Coal Maceralsinite maceral groups are discussed and compared to the corresponding liptinite macerals. The importance of separating macerals is considered, and some recent results using the density gradient centrifugation method of maceral separation is briefly reviewed. It is demonstrated that vitrinites are com
发表于 2025-3-26 03:22:55 | 显示全部楼层
Solid State 13C NMR in Coal Research: Selected Techniques and Applicationgic-angle spinning with high-power decoupling, dipolar dephasing, sideband suppression at high magnetic fields, dynamic nuclear polarization and combined rotation and multiple pulse spectroscopy. The quantitative reliability of .C NMR aromaticity measurements is also discussed. Results from recent s
发表于 2025-3-26 05:52:33 | 显示全部楼层
A New Approach for Quantitative 13C NMR Spectroscopy of Coalopy of coals and the use of samarium(II) iodide as a reagent for the realization of more quantitative spectroscopic results through the selective removal of organic free radicals from coal are discussed.
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发表于 2025-3-26 15:09:28 | 显示全部楼层
Estimating Thermophysical Properties of Coal Liquids Using NMR Spectraters, average molecular structures and functional group concentrations can all be calculated based on NMR data. The NMR data can find much broader application, however, than merely characterizing structure. This paper reviews some of the basic methods for applying NMR to the problem of property esti
发表于 2025-3-26 18:18:53 | 显示全部楼层
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