Search results for "Meri"
showing 10 items of 7596 documents
The variation of the law applicable to the family property regime in EU regulations n. 2016/1103 and 1104
2021
The essay examines the discipline of EU regulations n. 2016/1103 and 1104 concerning the identification of the law applicable to the family property regime. Specifically, the work reflects on problems arising after a change, during the relationship, of the substantial law applicable to the couple?s property regime.
Synthetic and natural polymer nanoparticles as bio-imaging and therapeutic agent vectors
2014
A library of monoalkenylsilsesquioxanes as potential comonomers for synthesis of hybrid materials
2018
In this paper we demonstrate a facile and efficient synthesis of monoalkenylsubstituted POSS compounds, i.e., R7(Si8O12)-alkenyl and R7(Si8O12)(OSiMe2)-alkenyl with a functional alkenyl group of chain length (from vinyl to dec-9-enyl, with or without additional –OSiMe2– spacer between the silsesquioxane core and alkenyl moiety) and with five types of inert groups (Et, iBu, iOc, Cy, Ph) at the POSS core. These compounds constitute a library of monosubstituted POSS systems, including thorough spectroscopic and thermal characteristics. These findings could be especially useful for material chemists applying the compounds as modifiers or comonomers for copolymerization reaction, e.g., with olef…
Carboxylate catalyzed isomerization of β,γ‐unsaturated N-acetylcysteamine thioesters
2022
We demonstrate herein the capacity of simple carboxylate salts – tetrametylammonium and tetramethylguanidinium pivalate – to act as catalysts in the isomerization of β,γ-unsaturated thioesters to α,β-unsaturated thioesters. The carboxylate catalysts gave reaction rates comparable to those obtained with DBU, but with fewer side reactions. The reaction exhibits a normal secondary kinetic isotope effect ( k 1H / k 1D = 1.065±0.026) with a β,γ−deuterated substrate. Computational analysis of the mechanism provides a similar value ( k 1H / k 1D = 1.05) with a mechanism where γ-reprotonation of the enolate intermediate is rate determining. peerReviewed
Oxidation-responsive and "clickable" poly(ethylene glycol) via copolymerization of 2-(methylthio)ethyl glycidyl ether
2016
Poly(ethylene glycol) (PEG) is a widely used biocompatible polymer. We describe a novel epoxide monomer with methyl-thioether moiety, 2-(methylthio)ethyl glycidyl ether (MTEGE), which enables the synthesis of well-defined thioether-functional poly(ethylene glycol). Random and block mPEG-b-PMTEGE copolymers (Mw/Mn = 1.05-1.17) were obtained via anionic ring opening polymerization (AROP) with molecular weights ranging from 5 600 to 12 000 g·mol-1. The statistical copolymerization of MTEGE with ethylene oxide results in a random microstructure (rEO = 0.92 ± 0.02 and rMTEG E = 1.06 ± 0.02), which was confirmed by in situ 1H NMR kinetic studies. The random copolymers are thermorespon…
On the effectiveness of numerical simulation in the prediction of profile distorsion in extrusion
2005
The conflicting historical issues and their school approach: a Spanish example
2017
En este estudio se analiza la forma en que los “tiempos difíciles” de la reciente historia española (la Guerra Civil y la dictadura franquista, 1936-1975) han sido tratados tanto en los manuales escolares de historia como en el interior de las aulas, estableciendo, por una parte, los avances historiográficos y didácticos conseguidos y, por otra, las actuales insuficiencias y deficiencias de tales planteamientos desde la perspectiva de un tratamiento realmente democrático y reconciliatorio de los mismos. Los avances han sido muy lentos, tanto en las representaciones sociales del conjunto de la sociedad española como en su presentación escolar. Todo ello permite afirmar que esta cuestión sigu…