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Castro, Maria,Losch, Pit,Park, Woojin,Haouas, Mohamed,Taulelle, Francis,Loerbroks, Claudia,Brabants, Gert,Breynaert, Eric,Kirschhock, Christine E. A.,Ryoo, Ryong,Schmidt, Wolfgang American Chemical Society 2018 Chemistry of materials Vol.30 No.8
<P>A case study on the understanding of the formation of hierarchical Beta zeolites using gemini-type piperidine based multiammonium surfactant (N<SUB>6</SUB>-diphe) is reported. Complementary techniques were used to investigate N<SUB>6</SUB>-diphe’s structure-directing effect at the molecular level. Combining characterization of the resulting zeolite materials with the toolboxes herein developed for studying clear solutions and dense gels discloses self-assembly processes that govern the growth (and growth inhibition) of nano-Beta zeolite crystals. In clear solution, small-angle X-ray scattering and liquid-state NMR provide insights about the formation of nanoparticles and their degree of order. <SUP>14</SUP>N and <SUP>1</SUP>H-DOSY NMR probe the dynamics and mobility of soluble species. In a dense gel, on the other side, <SUP>27</SUP>Al- and <SUP>29</SUP>Si-(MAS) NMR elucidate the varying local connectivity between initial nano-objects and the final solid products. It has been found that cylindrical micelles control the transformation of solubilized silica and alumina during the formation of zeolite nuclei and guide their crystal growth to nano-Beta rods with bimodal mesoporosity. The predominant smaller mesopores (6 to 8 nm) originate from the template’s hydrophobic alkyl chains, while larger mesopores (10 to 30 nm) are supposed to result from a spinodal decomposition-type segregation of phases consisting of as-formed hydrophobic zeolite rods and an aqueous solution.</P> [FIG OMISSION]</BR>
Accompanying Learning in Dance Classes in Quebec Schools through Movement Observation-Analysis (MOA)
Nicole Harbonnier,Caroline Raymond,Stéphanie Connors,Hélène Duval,Christine Brabant 상명대학교 글로벌문화예술교육연구소 2023 Research in Dance and Physical Activity Vol.7 No.3
As a school discipline in Quebec, dance is heir to the Modern Educational Dance (MED) movement, founded by Rudolf Laban (1948, 1976), better known in Quebec as creative dance (Raymond, 2014, p. 22). About ten years ago, Movement Observation-Analysis (MOA) (Harbonnier, Dussault, Ferri, 2021) was introduced into the artistic and pedagogical training of school dance teachers in Quebec. With the aim of revising ministerial programs for teaching dance in Quebec schools, which are over twenty years old, we wondered how MOA concepts were useful to dance teachers in Quebec schools. To this end, we asked ten school dance teachers to describe their use of OAM in their teaching, using the technique of the explicitation interview (Vermersch, 1994). With regard to the pedagogical function of school dance teachers, the results of our research, through the case study of teacher Suzie, show that MOA provides an enriched and clarified conceptual framework and lexicon to refine movement observation activities (diagnostic function), improve pedagogical communication (physical demonstration and verbal instructions), and provide knowledge about movement to share with students, fostering their autonomy in learning (learning support function).