Results 31 to 40 of about 23,792 (187)

Porous Phenazine‐bridged Tetraoxa[8]Circulenes for Selective Gold Recovery and Heterogeneous Catalysis

Angewandte Chemie, EarlyView.
Gold recycling from electronic waste using porous materials is an emerging concept to reduce the environmental impact of gold mining. In this work, we report the synthesis of a highly porous phenazine‐derived tetraoxa[8]circulene polymer and its utilization in gold capture and heterogeneous catalysis.
Patrick W. Fritz, Eylül Attar, Timur Ashirov, Krzysztof Piech, Ali Coskun   +4 more
wiley   +2 more sources

"Landschaft" - Quo vadis? [PDF]

Geographica Helvetica
No abstract available.
I. Schaller, V. Grandgirard
doaj   +1 more source

Field-induced ultrafast modulation of Rashba coupling at room temperature in ferroelectric α-GeTe(111)

Nature Communications, 2022
The ferroelectric material α-GeTe(111) is an excellent playground for spin-to charge conversion due to its strong Rashba coupling. Here, the authors reveal an ultrafast modulation of its Rashba coupling on the femtosecond timescale.
Geoffroy Kremer, Julian Maklar, Laurent Nicolaï, Christopher W. Nicholson, Changming Yue, Caio Silva, Philipp Werner, J. Hugo Dil, Juraj Krempaský, Gunther Springholz, Ralph Ernstorfer, Jan Minár, Laurenz Rettig, Claude Monney   +13 more
doaj   +1 more source

Strukturierter Überblick über kantonale Studien zum Fremdsprachenunterricht: Analytische Darstellung, inhaltliche und methodische Auswertung [PDF]

, 2014
Mit der Einführung von zwei Fremdsprachen ab der Primarstufe, die nach kantonalen Zeitplänen erfolgt(e), befindet sich der schulische Fremdsprachenunterricht in der Schweiz in einer Umbruchsphase.
Wiedenkeller, Eva Université de Fribourg
core  

Mechanoregulatory Effects of Cell‐Scale Microwells on Epithelial Cell Phenotype

Advanced Functional Materials, EarlyView.
In small polycaprolactone microwells, A549 epithelial cells span well edges, in contrast to cells growing on flat substrates. Focal adhesion sites (yellow) concentrate at topographic boundaries, while cytoskeletal tension (magenta stress fibers) is transmitted to the nucleus (blue), reducing nuclear sphericity.
Ruiwen He, Wang Sik Lee, Phattadon Yajan, Aaron Lee, Mauro Sousa de Almeida, Sandeep Keshavan, Jozef Adamcik, Céline Loussert‐Fonta, Dimitri Vanhecke, Barbara Rothen‐Rutishauser, Alke Petri‐Fink   +10 more
wiley   +1 more source

Vers un modèle théorique interdisciplinaire de Didactique d’Éducation à la Citoyenneté numérique

Schweizerische Zeitschrift für Bildungswissenschaften, 2023
L’institution scolaire de Suisse romande place l’éducation à la citoyenneté numérique et le développement d’une culture numérique comme nouvelles finalités éducatives.
Ania Tadlaoui-Brahmi, Lionel Alvarez, Jean-Charles Buttier   +2 more
doaj   +1 more source

Bio‐Inspired Magnetically Tunable Structural Colors from Elliptical Self‐Assembled Block Copolymer Microparticles

Advanced Functional Materials, EarlyView.
Cephalopod‐inspired photonic microparticles with dynamic structural coloration are fabricated via confined self‐assembly of linear block copolymers into ellipsoids containing stacked lamellae. Embedded superparamagnetic nanoparticles enable rapid magnetic alignment, restoring vivid, angle‐dependent color.
Gianluca Mazzotta, Simone Bertucci, Jose Mendoza‐Carreño, Agustín Mihi, Paola Lova, Davide Comoretto, Ullrich Steiner, Marco Lattuada, Andrea Dodero   +8 more
wiley   +1 more source

Penser l’éducation ouverte au prisme des capabilités : pourquoi les REL à l’ère des ia?

Médiations & Médiatisations
L’éducation ouverte (EO) et les ressources éducatives libres (REL) s’appuient sur des valeurs démocratiques auxquelles peu de personnes s’opposent dans le champ de l’éducation. En effet, il s’agit de s’engager pour le partage des ressources permettant le
Lionel Alvarez, Lucile Berset, Corinne Ramillon, Julien Bugmann, Jennifer Correia   +4 more
doaj   +1 more source

Color Routing and Beam Steering of Single‐Molecule Emission with a Spherical Silicon Nanoantenna

Advanced Functional Materials, EarlyView.
We experimentally demonstrate broadband directional emission from single molecules using a single spherical silicon nanoparticle assembled via DNA origami. By varying nanoparticle (NP) size and emitter position, we achieve unidirectional emission, beam steering, and color routing at the nanoscale, revealing modal interference as the underlying ...
María Sanz‐Paz, Nicole Siegel, Guillermo Serrera, Javier González‐Colsa, Fangjia Zhu, Karol Kołątaj, Minoru Fujii, Hiroshi Sugimoto, Pablo Albella, Guillermo P. Acuna   +9 more
wiley   +1 more source

Radicals in Stereoselective Synthesis and Electron Transfer Reactions

CHIMIA, 2013
This short historical review describes the work of the Giese group on radicals and radical ions that has led to the award of the Paracelsus prize in 2012.
Bernd Giese, Sonja Eckhardt
doaj   +1 more source