Search results for "radical"
showing 10 items of 1401 documents
INDAGINE SPERIMENTALE SULLA DISTRIBUZIONE SPAZIALE DELLA DENSITÀ RADICALE DI PIANTE DI OLIVO (OLEA EUROPEA, L.) IRRIGATE A GOCCIA
2009
DNA damage by peroxynitrite characterized with DNA repair enzymes.
1996
The DNA damage induced by peroxynitrite in isolated bacteriophage PM2 DNA was characterized by means of several repair enzymes with defined substrate specificities. Similar results were obtained with peroxynitrite itself and with 3-morpholinosydnonimine (SIN-1), a compound generating the precursors of peroxynitrite, nitric oxide and superoxide. A high number of base modifications sensitive to Fpg protein which, according to HPLC analysis, were mostly 8-hydroxyguanine residues, and half as many single-strand breaks were observed, while the numbers of oxidized pyrimidines (sensitive to endonuclease III) and of sites of base loss (sensitive to exonuclease III or T4 endonuclease V) were relativ…
Histone carbonylation occurs in proliferating cells
2012
12 páginas, 10 figuras (que no es encuentran en este documento, se pueden ver en: http://www.sciencedirect.com/science/article/pii/S0891584912000664)
Oxidative DNA cleavage by copper ternary complexes of 1,10-phenanthroline and ethylenediamine-sulfonamide derivatives
2009
Abstract Ternary copper(II) complexes (1–3) of 1,10-phenanthroline and ethylenediamine-R-sulfonamide derivatives (R = benzene, toluene and naphthalene rings) have been synthesized and characterized with the aid of X-ray diffraction and spectroscopic and electrochemical techniques. The crystal structures of the complexes show that the coordination polyhedron around copper(II) is distorted square planar. Both 1,10-phenanthroline and ethylenediamine-R-sulfonamide act as bidentate ligands. The three structures are stabilized by π–π stacking interactions. The interaction of the complexes with calf thymus DNA has been investigated by thermal denaturation studies which indicated that DNA was stabi…
Polysaccharides from Pleurotus eryngii var. elaeoselini (Agaricomycetes), a New Potential Culinary-Medicinal Oyster Mushroom from Italy.
2020
Three water-soluble glucans (PELPS-A1, PELPS-A2, and PELPS-A3) purified from the hot water extract of the basidiomata of an edible mushroom Pleurotus eryngii var. elaeoselini by chromatography on DEAE-cellulose 32 and Sephadex G-100 column were found to consist of only D-glucose as monosaccharide constituent. Structural investigation was carried out by acid hydrolysis, periodate oxidation, and NMR experiments (1H-NMR, 13C-NMR, DQF-COSY, TOCSY, ROESY, HMQC, and HMBC). On the basis of these experiments, the structures of the repeating unit of the three isolated polysaccharides were established as follows: (1) PELPS-A1: {[→3)-α-D-Glcp-(1→]3→4)-α-D-Glcp-(1→2)-α-D-Glcp-(1→6)-α-D-Glcp-(1[→6)-β-D-…
Isolation and identification of new anthraquinones from Rhamnus alaternus L and evaluation of their free radical scavenging activity
2018
From the butanolic and the ethyl acetate extracts of Rhamnus alaternus L root bark and leaves, three new anthraquinone glycosides, alaternosides A-C (1,4,6,8 tetrahydroxy-3 methyl anthraquinone 1-O-ß-D-glucopyranosyl-4,6-di-O-α-L-rhamnopyranoside (1); 1,2,6,8 tetrahydroxy-3 methyl anthraquinone 8-O-ß-D-glucopyranoside (2) and 1, 6 dihydroxy-3 methyl 6 [2′-Me (heptoxy)] anthraquinone (3)) were isolated and elucidated together with the two known anthraquinone glycosides, Physcion-8-O-rutinoside (4) and emodin-6-O-α-L-rhamnoside (5) as well as with the known kaempferol-7-methylether (6), β-sitosterol (7) and β-sitosterol-3-O-glycoside (8). Their chemical structures were elucidated using spectr…
Co-Design of an Online Campaign for an Inclusive Community: Languages, Images and Participation
2022
This volume shows how communication matters in building our perception and imaginary about groups of people that are different form “us”. The difference between “us” and “others” is totally cultural and represents an obstacle to integration. To avoid the extreme effects of radicalisation, we can promote social campaigns based on two important features: participation and awareness about (counter-)narratives. This book discusses the good practices built in the European project Oltre, devoted to preventing the radicalisation in second generation Muslim youth. It will serve to push the reader beyond common sense and prejudice, towards the future citizenship of Italy, Europe and the whole world.
Endocrine disrupter compounds removal in wastewater using microalgae: Degradation kinetics assessment
2018
[EN] This paper describes a study carried out to determine the removal kinetics of four micropollutants (4-tert-octylphenol (OP), technical-nonylphenol (t-NP), 4-nonylphenol (4-NP) and bisphenol-A (BPA)) usually found in wastewater streams. The kinetic experiments were carried out in batch reactors containing the effluent of an Anaerobic Membrane BioReactor (AnMBR) in the presence of light, oxygen and microalgae. As the degradation process of the studied micropollutants obeyed a pseudo-first-order kinetics, the second-order kinetics for each micropollutant was then calculated. The second order rate constants for the hydroxyl radical (k.(OH)) ranged from 7.0.10(+10) to 6.6.10(+12) L.mol(-1).…
Disidencias sexuales, estéticas Museari, procesos críticos en el aula y ritos online mediante el proyecto Arteari.
2019
[ES] El potencial del entorno online para impulsar políticas culturales e innovaciones educativas está en conexión con nuestra habilidad para redefinir las relaciones entre la escuela, el museo y la universidad (Sancho, Hernández y Rivera, 2016). Por su parte, el arte contemporáneo y la educación artística están tomando una deriva social que tiene entre sus frentes más activos la lucha por los derechos humanos (Deleuze y Guattari, 2004). Conscientes de la necesidad de implicarnos en estos avances de orden tecnológico y de equilibrio social, se creó Museari, un museo online en el que se desarrollan proyectos para mejorar la situación de los colectivos LGTB, coordinando actividades a través d…
La sabiduría trágica y la fragilidad de la democracia
2019
[ES] El objetivo de este trabajo es buscar respuestas a la actual crisis de la democracia. Uno motivos que nos han llevado a esta situación es el olvido de que la democracia no es érgon, un producto acabado, sino que es constitutivamente enérgeia, la permanente acción de producirla. La no resolución de este conflicto permanente ha ocasionado la decepción de la democracia al descubrir su vulnerabilidad. Precisamente, dicha vulnerabilidad nos conmina a recuperar la filosofía trágica para indagar sobre esta situación que tiene como base un conflicto con difícil resolución. Es sintomático que en el mundo moderno la tragedia pugne de nuevo por abrirse camino cuando parecía ya socavada por una es…