56016 research outputs found
Sort by
SO2 resistance of Cu-based catalyst for Selective Catalytic Reduction of NOx with NH3 by loading WS2
No full textWide Temperature Window Catalyst for NH3-SCR by Interaction between Vanadium and Tungsten oxides
No full textEnhanced Role of Convection in Future Hourly Rainfall Extremes Over South Korea
No full textA convection-permitting regional climate model (CPRCM) with 2.5 km resolution has been simulated over South Korea for current and future conditions, and the role of convection in the scaling of hourly extreme precipitation (EP) with temperature is examined. It is found that the CPRCM can reproduce the observed super Clausius-Clapeyron (C-C) scaling for hourly EP. Precipitation type estimated based on the convective available potential energy reveals the important role of convection in the super C-C scaling. Fraction of convective rainfall events increases rapidly with temperature, and the contribution of convection becomes dominant in future simulations under high-emission scenarios. In the late 21st century, as temperature ranges shift to warmer conditions, unprecedented hourly extreme rainfall events are projected to occur particularly during the late summer season. Future changes in hourly extreme events are found to be affected much by boundary conditions from different global climate models
Benzenehexol-based 2D MOF as high-performance electrocatalyst for oxygen reduction reaction
No full textTwo-dimensional (2D) conductive metal-organic frameworks (MOFs) were an emerging class of potential oxygen reduction reaction (ORR) electrocatalysts to replace platinum-containing electrode materials. Herein, by first -principles calculations, we systematically studied the structural stability, electronic properties and ORR catalytic activity of metal-hexahydroxybenzene nanosheets, M-3(C6O6), M = 3d and 4d transition metals. Based on formation energy, phonon spectrum and ab-initio molecular dynamics analyses, eight monolayer M3(C6O6) (M = Cr, Mn, Fe, Co, Cu, Zn, Ru and Rh) show superior thermodynamic, kinetic and thermal stabilities. Further ORR catalytic activity evaluation shown Cu-3(C6O6) and Rh-3(C6O6) had promising applications in catalyzing ORR 4e(-)pathway, with limiting potentials 0.76 and 0.80 V, respectively. The linear relationship between integrated crystal orbital Hamilton population (ICOHP) and delta G(OH* )explains the suitable adsorption energy of OH* on the catalyst, resulting in the excellent ORR activity of Cu3(C6O6) and Rh3(C6O6). Our study on M-3(C6O6) provides references for the research of other 2D MOFs as ORR catalysts
Consumer Culture and Reflexive Modernity in Korea
No full textLa meta de la investigaci??n es trazar el papel del consumo popular en el proceso de transici??n de la modernidad cl??sica hacia la modernidad tard??a. Mi an??lisis est?? dirigido a entender las formas de consumo que instrumentalizan los conceptos de herencia y tradici??n. Partiendo de la concepction de "la invenci??n de la tradici??n, sostengo que estas mercanc??as tienen apariencia tradicional pero tienen origen en la modernidad, y son ??tiles para la reproducci??n de identidades sociales modernas. El an??lisis que presento parte de mi estudio etnogr??fico sobre la carne de ballena, un producto comestible tradicional en la ciudad surcoreana de Ulsan donde actualmente radico
