Materials Literature
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Abstract The new title compounds are synthesized in excess liquid Ga from mixtures of Yb, Pd, Ga, and Ge in the atomic ratio 3:2:30:6 (alumina crucible in an evacuated silica tube, 1123 K, 48 h).
Linear low density polyethylene (PE-LLD) and cast polypropylene (PPcast) films were exposed to γ- irradiation. The irradiation dose varied from 0 kGy (nonirradiated samples) to 200 kGy. A manometric method was used to investigate oxygen permeability of polyolephines. Structural changes were studied by differential sca…
Abstract Review: 36 refs.
Abstract Review: 261 refs.
Les copolymeres a blocs contenant une partie souple et une partie dure constituent aujourd'hui une classe de materiaux tres attractifs en raison de leurs proprietes resultant de la combinaison de deux homopolymeres de nature differente. Dans le cadre des copolymeres a blocs a forte teneur en polydimethylsiloxane (PDMS…
Abstract Review: ca. 100 refs.
A method to study how proteins behave in solution has gotten a major upgrade. Researchers can now perform amide hydrogen-deuterium exchange mass spectrometry (HDXMS) without jury-rigging and can analyze reams of data rapidly, thanks to hardware and software the instrumentation company Waters developed for the techniqu…
Objetivo deste estudo foi preparar, caracterizar e estudar materiais tipo perovskita (Ba3BB‟2O9 e Ba2BB‟O6) como catalisadores para reacao de conversao de NOX em N2 e CO em CO2, buscando desenvolver conversores cataliticos alternativos. Os compostos foram preparados pelo metodo do precursor polimerico, calcinados a 50…
In this work, shape memory polymer neurovascular stent prototypes based on a previously proposed design were thermo-mechanically characterized to expand on the clinical efficacy of the device. The stents were made by dip-coating pins in a thermoplastic polymer solution and subsequently covalently crosslinking the poly…
This work deals with mimicking structural features found in nacre to fabricate composite materials as a tough ceramic material and to explore the mechanical properties. It is part of the work package D9 ôBiomimetic Ceramicsö of the Collaborative Research Centre 599 ôSustainable bioresorbable and permanent implants of…
Nuclear quadrupole resonance measurements have shown evidences that the heavy fermion compound CeRhIn$_5$ exhibits a coexistent phase with commensurate antiferromagnetism and d-wave superconductivity. In order to clarify the nature of the spin-excitations in the coexistent phase, we have applied the RPA method to an i…
The thesis is focused on the investigation of ligand exchange reactions of currently used MRI contrast agents (GdDTPA, GdBOPTA and Gd(DTPA-BMA)) with TTHA, and the physico-chemical characterization of gadolinium(III) complexes formed with novel macrocyclic polyamino polycarboxylate ligands (bp12c42- and L1= oxa-triaza…
International audience
Defects in graphene greatly affect its properties1-3. Radiation induced-defects may reduce the long-term survivability of graphene-based nano-devices. Here, we expose few-layer graphene to extreme ultraviolet (EUV, 13.5nm) radiation and show there is a power-dependent increase in defect density. We also show that expo…
International audience
The application of the factor analysis to the studies of the nonlinear elasticity of the piezoceramic materials is presented. All physical properties of these materials are strongly nonlinear dielectric, elastic and unelastic. Moreover, all these properties manifest creep. Simultaneous measurements of all these charac…
International audience
International audience
International audience
During hyperbaric decompression, the absolute ambient pressure is reducing; microbubbles may be generated from pre-existing gas nuclei. An accurate monitoring of the size and of the density of the bubble population will provide a valuable means to understand the nucleation and growth processes in tissues. In this aim,…