Search results for "4R*"
showing 10 items of 71956 documents
Ternary transition metals sulfides in hydrotreating catalysis.
2007
International audience; Pure microcrystalline barium molybdate BaMoO4 and barium tungstate BaWO4 materials were prepared by molten flux reaction using alkali metal nitrates as reaction media. The obtained crystals have rhombic shape and expose mostly (111) crystallographic planes. Their mean size depends on the flux temperature and the nature of the alkali metal cation. Monomeric molybdate and tungstate used as precursors yield target products already at 673 K whereas if polymerized ammonium oxosalts were used, then higher temperatures were necessary to obtain barium salts. The optimal temperature for the preparation of pure crystals with well defined shape was found to be near 773 K. UV–vi…
Rapid evaluation of notch stress intensity factors using the peak stress method with 3D tetrahedral finite element models: Comparison of commercial c…
2022
The peak stress method (PSM) allows a rapid application of the notch stress intensity factor (NSIF) approach to the fatigue life assessment of welded structures, by employing the linear elastic peak stresses evaluated by FE analyses with coarse meshes. Because of the widespread adoption of 3D modeling of large and complex structures in the industry, the PSM has recently been boosted by including four-node and ten-node tetrahedral elements of Ansys FE software, which allows to discretize complex geometries. In this paper, a Round Robin among eleven Italian Universities has been performed to calibrate the PSM with seven different commercial FE software packages. Several 3D mode I, II and III …
Affective matching of odors and facial expressions in infants: shifting patterns between 3 and 7 months.
2016
Recognition of emotional facial expressions is a crucial skill for adaptive behavior. Past research suggests that at 5 to 7 months of age, infants look longer to an unfamiliar dynamic angry/happy face which emotionally matches a vocal expression. This suggests that they can match stimulations of distinct modalities on their emotional content. In the present study, olfaction-vision matching abilities were assessed across different age groups (3, 5 and 7 months) using dynamic expressive faces (happy vs. disgusted) and distinct hedonic odor contexts (pleasant, unpleasant and control) in a visual-preference paradigm. At all ages the infants were biased toward the disgust faces. This visual bias…
CCDC 1844063: Experimental Crystal Structure Determination
2018
Related Article: Fabian Brunner, Azin Babaei, Antonio Pertegás, José M. Junquera-Hernández, Alessandro Prescimone, Edwin C. Constable, Henk J. Bolink, Michele Sessolo, Enrique Ortí, Catherine E. Housecroft|2019|Dalton Trans.|48|446|doi:10.1039/C8DT03827A
CCDC 607533: Experimental Crystal Structure Determination
2007
Related Article: A.Hoffmann-Roder, E.Schweizer, J.Egger, P.Seiler, U.Obst-Sander, B.Wagner, M.Kansy, D.W.Banner, F.Diederich|2006|ChemMedChem|1|1205|doi:10.1002/cmdc.200600124
CCDC 245910: Experimental Crystal Structure Determination
2006
Related Article: R.Frohlich, T.C.Rosen, O.G.J.Meyer, K.Rissanen, G.Haufe|2006|J.Mol.Struct.|787|50|doi:10.1016/j.molstruc.2005.10.033
Phosphorous doping and drawing effects on the Raman spectroscopic properties of O=P bond in silica-based fiber and preform.
2012
International audience; We report an experimental study of the doping and drawing effects on the Raman activities of phosphorus (P)-doped silica-based optical fiber and its related preform. Our data reveal a high sensitivity level in the full width at half maximum value of the 1330 cm−1 (O = P) Raman band to the P-doping level. Its increase with the P doping level does not clash with an increase in the disorder of the O = P surrendering matrix. In addition, we observe that in the central core region of the sample (higher doping level), the drawing process decreases the relative band amplitude. We tentatively suggest that this phenomenon is due to the change in the first derivate of the bond…
CCDC 1478715: Experimental Crystal Structure Determination
2016
Related Article: Toni Mäkelä, Anniina Kiesilä, Elina Kalenius and Kari Rissanen|2016|Chem.-Eur.J.|22|14264|doi:10.1002/chem.201602362
CCDC 956381: Experimental Crystal Structure Determination
2013
Related Article: Adrian Y. Houghton, Virve A. Karttunen, Warren E. Piers, Heikki M. Tuononen|2014|Chem.Commun.|50|1295|doi:10.1039/C3CC48796B
CCDC 968508: Experimental Crystal Structure Determination
2013
Related Article: Filippo Monti, Florian Kessler, Manuel Delgado, Julien Frey, Federico Bazzanini, Gianluca Accorsi, Nicola Armaroli, Henk J. Bolink, Enrique Ortí, Rosario Scopelliti, Md. Khaja Nazeeruddin, and Etienne Baranoff|2013|Inorg.Chem.|52|10292|doi:10.1021/ic400600d