An Mn/Ce@red mud (RM) catalyst was prepared from RM via a doping–calcination method. Scanning electron microscopy, X-ray diffraction, and photoelectron spectroscopy were used to characterize the surface morphology, crystal elemental composition of Mn/Ce@RM catalyst, respectively. In addition, preparation catalytic ozonation conditions optimized, mechanism discussed. Lastly, fuzzy analytic hiera...

Platinum nanocubes (PtNCs) were deposited onto a fluorine-doped tin oxide glass by electrochemical deposition (ECD) method and utilized as a counter electrode (CE) for dye-sensitized solar cells (DSSCs). In this study, we controlled the growth of the crystalline plane to synthesize the single-crystal PtNCs at room temperature. The morphologies and crystalline nanostructure of the ECD PtNCs were...

We report dynamic alternation of the redox chemistry of the Fe/ Fe couple in magnetite during high temperature water−gas shift reaction in Cu codoped Mmodified ferrite catalysts. Various hematitic solid solutions of the type Fe2O3−MxOy−CuOx with M = Cr, Ce, Ni, Co, Mn, and Zn are synthesized using the industrially economical and environmentally friendly coprecipitation method. Interestingly, Cu...

Nioboaeschynite-(Ce), ideally Ce(NbTi)O(6) [cerium(III) niobium(V) titanium(IV) hexa-oxide; refined formula of the natural sample is Ca(0.25)Ce(0.79)(Nb(1.14)Ti(0.86))O(6)], belongs to the aeschynite mineral group which is characterized by the general formula AB(2)(O,OH)(6), where eight-coordinated A is a rare earth element, Ca, Th or Fe, and six-coordinated B is Ti, Nb, Ta or W. The general st...

Summarization of electronic discussion fora is a unique challenge; techniques that work startlingly well on monolithic documents tend to fare poorly in this informal setting. Additionally, conventional techniques ignore much of the structures that have the potential to serve as valuable features in the summarization task. We present several novel examples of such features, including the catalys...

La théorie des réseaux de Petri est née de la thèse de Carl Adam Petri [PE 62]. Mais, bien d’autres chercheurs ont contribué à ce qui est devenu “les réseaux de Petri”. Certains sont explicitement partis des travaux de Carl Adam Petri, les ont légèrement modifiés et ont développé les notions que ce dernier avait introduites. D’autres ont menés indépendamment des travaux sur la représentation et...

Résumé : Dans une ontologie de domaine, une association sémantique entre deux entités (concepts, attributs d’un concept) est une représentation d’un chemin ou d’un lien sémantique (LS) indirect entre elles. Un défi prometteur pour le Web sémantique est de développer des méthodes pour découvrir des données fortement liées dans un nombre important d’associations sémantiques rassemblées à partir d...