Search results for "Radical"
showing 10 items of 1401 documents
New charge transfer salts of two organic π-donors of the tetrathiafulvalene type with the paramagnetic [Cr(NCS)6]3- anion
2003
cited By 9; International audience; The electrochemical combination of the paramagnetic anion [Cr(NCS)6]3- with the organic π-donors bis(ethylenedithio)tetrathiafulvalene (ET) and 4,5-bis(2-hydroxyethylthio) -4′,5′-ethylenedithiotetrathiafulvalene (DHET-EDTTTF) leads to two new radical cation salts, namely (ET)4 [Cr(NCS 6]·PhCN 1 and (DHET-EDTTTF)2 (NEt4)[Cr(NCS)6] 2. Both have been characterized by X-ray crystallography, magnetic and resistivity measurements. The structure of 1 consists of alternating inorganic layers generated by the anions and organic layers in which the PhCN molecules are inserted; the organic sub-lattice is built up from four different ET units, three of them with a ch…
Oxysterols Incorporate in Primary Porcine Retinal Pigment Epithelial Cells and Induce Inflammation and Oxidative Stress
2006
International audience; Purpose: : Aging is associated with an accumulation of cholesterol in the Bruch’s membrane. Cholesterol is prone to undergo oxidation and to generate oxysterols that have cytotoxic properties. The aim of this study was to evaluate the effects of oxysterols on cell viability, oxidative stress and inflammation and to measure oxysterol incorporation in primary porcine retinal pigment epithelial (RPE) cell cultures. Methods: : Porcine RPE cells were incubated with oxysterols (24S–hydroxycholesterol, 24OH ; 25–hydroxycholesterol, 25OH and 7–ketocholesterol, 7K) (100µg, 50µM) for 24 and 48h. Cell viability was evaluated by measuring mitochondrial succinate dehydrogenase (S…
CCDC 1945945: Experimental Crystal Structure Determination
2019
Related Article: Suchithra Ashoka Sahadevan, Alexandre Abhervé, Noemi Monni, Pascale Auban-Senzier, Joan Cano, Francesc Lloret, Miguel Julve, Hengbo Cui, Reizo Kato, Enric Canadell, Maria Laura Mercuri, Narcis Avarvari|2019|Inorg.Chem.|58|15359|doi:10.1021/acs.inorgchem.9b02404
Silseskwioksany i ich zastosowanie w syntezie materiałów polimerowych
2015
Artykuł stanowi przegląd literatury dotyczącej syntezy oraz charakterystyki materiałów polimerowych zawierających silseskwioksany (POSS). Przedstawiono metody otrzymywania hybrydowych materiałów polimerowych z udziałem funkcjonalizowanych POSS na drodze click chemistry, polikondensacji, poliaddycji, metatezy z otwarciem pierścienia ipolimeryzacji rodnikowej zarówno konwencjonalnej, jak i kontrolowanej (ATRP).
Grafting of polymer chains on the surface of carbon nanotubes via nitroxide radical coupling reaction
2016
Poly(butylene succinate)/MWCNTs nanocomposites with improved dispersion and with nanotubes embedded/immobilized into the polymer matrix were here prepared by an alternative "grafting to" method based on thenitroxide radical coupling reaction. Poly(butylene succinate) (PBS) was grafted on the surface of TEMPO (2,2,6,6-tetramethyl-1-piperidinyloxy) modified multi-walled carbon nanotubes (MWCNTs) via a nitroxide radical coupling reaction. TEMPO functionalized MWCNTs (MWCNTs-g-TEMPO) were synthesized using the Cu(I)-catalyzed azide/alkyne click chemistry approach and the covalent bond of the nitroxide moieties onto the MWCNTs was confirmed via electron paramagnetic resonance (EPR) spectroscopy.…
Block copolymers from ionic liquids for the preparation of thin carbonaceous shells
2017
This paper describes the controlled radical polymerization of an ionic-liquid monomer by RAFT polymerization. This allows the control over the molecular weight of ionic liquid blocks in the range of 8000 and 22000 and of the block-copolymer synthesis. In this work we focus on block copolymers with an anchor block. They can be used to control the formation of TiO2 nanoparticles, which are functionalized thereafter with a block of ionic-liquid polymer. Pyrolysis of these polymer functionalized inorganic nanoparticles leads to TiO2 nanoparticles coated with a thin carbonaceous shell. Such materials may, e.g., be interesting as battery materials.
Análisis ideológico-discursivo de la nueva derecha radical. El caso de Vox y el nativismo
2022
Durante las últimas décadas ha ido desarrollándose un nuevo auge de la ultraderecha a nivel mundial que está protagonizado por unas formaciones de derecha radical nacidas en el contexto sociopolítico actual y que persiguen unos intereses y emplean unos discursos populistas que no coinciden con las directrices profundamente antidemocráticas que seguían tradicionalmente las organizaciones que representaban este espacio del espectro ideológico desde los años treinta, pero que actualmente ha quedado dividido en dos grandes familias: la vieja y, en la que se centra este trabajo, la nueva. España, al igual que la mayoría de los países europeos, no se ha librado del auge de esta nueva familia, pue…
Review of Recanati’s “Literal Meaning”,
2005
La necesaria rehabilitación del sistema representativo en las propuestas de reforma democrática
2010
In the debates on deliberative democracy it’s a common idea that the defenders of this theory argue for the direct participation of the citizens in the political issues and for the transformation of our current representative devices. However, in this work I argue that this conception is misguided, and that it’s the minority who defends the direct participation. The majority of the writers acknowledges the necessity of a representative device, although based on different premises to the liberal system. The deliberative democracy supports a responsible and compromised citizenship, against the model of self interested citizenship.<br><br>En los debates sobre la democracia delibera…
Planning as evolution: radical pedagogy, creative methods and urban research
2022
Beyond reductionist thought, looking at a theoretical framework that embrace a complex dimension of knowledge, the urban planning discipline is going through a radical change. An attitude well expressed by a large group of intellectuals who recognize the fragility of the discipline and re-think themselves in opposition to the excess of specialization of the modern world to grasp the vital interconnection between things, the intersection spaces, on disciplinary boundaries, where concepts become images, symbols, practices, processes. In this ongoing change of paradigm, sensitive approaches and aesthetic rationalities arouse interest within urban and territorial studies. Starting from the inte…