Search results for "TYR"

Pd nanoparticles formation inside porous polymeric scaffolds followed by in situ XANES/SAXS

2015

International audience; Simultaneous time-resolved SAXS and XANES techniques were employed to follow in situ the formation of Pd nanoparticles from palladium acetate precursor in two porous polymeric supports: polystyrene (PS) and poly(4-vinyl-pyridine) (P4VP). In this study we have investigated the effect of the use of different reducing agents (H-2 and CO) from the gas phase. These results, in conjunction with data obtained by diffuse reflectance IR (DRIFT) spectroscopy and TEM measurements, allowed us to unravel the different roles played by gaseous H-2 and CO in the formation of the Pd nanoparticles for both PS and P4VP hosting scaffolds

Perpètua de Cartago i Camar de Tunis. Sobre algunes fonts del Curial accessibles a Itàlia

2016

Resum: Els estudiosos del Curial han relacionat facilment l’enamorament de l’africana Camar amb els amors –tambe africans– d’Enees i Dido. Tanmateix, els ha passat desapercebuda la figura de la martir romana Perpetua de Cartago, jove estudiosa de l’ Eneida, que fou lligada a un pal i exposada als lleons, entre altres aspectes biografics relacionables amb el personatge curialesc de Camar. La revisio de les Actes del martiri (versions A i B, divulgades ensems) i de la novel·lada Passio Perpetuae (segle III) permet detectar coincidencies argumentals i connexions intertextuals amb la novel·la cavalleresca del segle XV. El fet que aquestes fonts foren facilment accessibles a Italia (Mila, Napols…

L'histoire des Martyrs (1554-1619) de Jean Crespin : un témoignage du légalisme juridique de la minorité protestante

2020

Dès les débuts de la Réforme française, la justice s’est imposée comme un obstacle dans la mesure où les évangéliques furent très tôt inquiétés par les autorités. Entre 1525 et 1564, 422 hérétiques sont condamnés et effectivement exécutés sur le bûcher, soit un septième du total européen (près de 3 000 exécutés). Puisque le taux d’exécution oscille entre 5 et 10 % des poursuivis, on peut estimer que près de 5 000 Français ont été devant les tribunaux pour des opinions hétérodoxes. Malgré la d...

Calvin et la politique du martyre

2008

Dans les années 1550, Calvin doit réagir face aux persécutions qu’endurent ses coreligionnaires français. Doit-il inviter les fidèles à se soumettre, quitte à ce qu’ils dissimulent leur foi, au nom de l’obéissance à l’autorité civile ou au contraire à se rebeller en vertu de la souveraineté exclusive du Seigneur ? Il tranche par la valorisation du martyre, très présent dans sa correspondance privée et publique. Le martyre s’avère, en effet, un outil spirituel pour contrôler les communautés naissantes et un outil politique pour instiller la subversion dans une stratégie demeurant légaliste à l’égard de Henri II. Cette «prudence» excède ainsi la résistance passive par la célébration des héro…

Heurs et malheurs d’un tyran: le cas de Hiéron de Syracuse, in Pallas 79, 2009, 81-103

2009

The analysis focuses on the figure of Hieron, a Syracusan tyrant who met with mixed fortune in scholarly studies. Often compared with his brother Gelon, the second of the Deinomenides was seen as a rapacious and violent tyrant. We here reconsider the testimonies on Hieron in order to find out to what extent that judgement actually corresponds to the image which the tradition of Antiquity gave of the tyrant. The case of Hieron offers above all an opportunity to examine the lines which oriented the studies on tyranny in Sicily and to provide an outline of the latest prospects of research. L’analyse se concentre sur la figure de Hiéron, tyran de Syracuse, qui eut une fortune diverse dans les é…

Modeling Tyrosinase and Catecholase Activity Using New m-Xylyl-Based Ligands with Bidentate Alkylamine Terminal Coordination

2012

Chemical model systems possessing the reactivity aspects of both tyrosinase and catechol oxidase are presented. Using two m-xylyl-based ligands providing bidentate alkylamine terminal coordination, 1,3-bis[(N,N-dimethylaminoethyl)aminomethyl]benzene (L(H,H)) and 1,3-bis[(N,N,N'-trimethylaminoethyl)aminomethyl]benzene (L(Me,Me)), four new dicopper(I) complexes, [Cu(I)(2)(L(H,H))(MeCN)(4)][ClO(4)](2) (1), [Cu(I)(2)(L(H,H))(PPh(3))(2)(MeCN)(2)][ClO(4)](2) (2), [Cu(I)(2)(L(Me,Me))(MeCN)(2)][ClO(4)](2) (3), and [Cu(I)(2)(L(Me,Me))(PPh(3))(2)][ClO(4)](2) (4), have been synthesized and characterized. Complex 2 has been structurally characterized. Reaction of the dicopper(I) complex 3(2+) with diox…

Kalmbergin kartasto R IV : List 9

1855

Synthesis and Antileukemic Activity of New 3-(5-Methylisoxazol-3-yl) and 3-(Pyrimidin-2-yl)-2-styrylquinazolin-4(3H)-ones.

2003

3-(3-Methylisoxazol-5-yl) and 3-(pyrimidin-2-yl)-2-styrylquinazolin-4(3H)-ones 8a–l and 9a,c–e,h–l were synthesized by refluxing in acetic acid the corresponding 2-methylquinazolinones 6 and 8 with the opportune benzoic aldehyde for 12 h. The synthesized styrylquinazolinones 8a–l and 9a,c–e,h–l were tested in vitro for their antileukemic activity against L-1210 (murine leukemia), K-562 (human chronic myelogenous leukemia) and HL-60 (human leukemia) cell lines showing in some cases good activity.

Fluorescence Quenching in Hybrid Solar Cells Based on Electrodeposited ZnO

2013

A study about fluorescence phenomena in hybrid donor-acceptor interfaces based on electrodeposited zinc oxide (e-ZnO) having different architectures is performed. In particular ITO/ZnO/P3HT and ITO/ZnO/P3HT:PCBM are investigated and their photoluminescence responses are compared with those of ITO/P3HT and ITO/P3HT:PCBM. As expected, ITO/ZnO/P3HT:PCBM and ITO/P3HT:PCBM present higher exciton quenching than ITO/ZnO/P3HT and ITO/P3HT respectively. Furthermore, the hybrid configuration ITO/ZnO/P3HT:PCBM displays a higher quenching percentage in a wider wavelength range than ITO/P3HT:PCBM, indicating a better photo-induced charge separation in e-ZnO based hybrid devices.

C,N-chelated dicyclopentadienylzirconium complexes and their possible use as hydrogenation catalysts

2010

Abstract In situ generated Cp2Zr(n-Bu)Cl (6) reacts with {2-[(CH3)2NCH2]C6H4}2Pb to form exclusively {2-[(CH3)2NCH2]C6H4}Cp2ZrCl (7), [(CH3)2NCH2]C6H5, butene and elemental lead. The further derivatization of chloride (7) to fluoride (8), hydride (9), methyl derivative (10), and a reduction of 7 are also described. The crystal structures of 7–10 were determined. The catalytic activity of 9 and 10 in hydrogenation of styrene was also preliminarily tested.