Search results for "PEI"
showing 10 items of 367 documents
Nutraceutical properties of extra-virgin olive oil: a natural remedy for age-related disease?
2013
The health benefits of the Mediterranean diet can be largely ascribed to the nutraceutical properties of extra-virgin olive oil (EVOO). Mono-unsaturated fatty acids and various phenolic compounds, such as oleocanthal, oleuropein, hydroxytyrosol, and tyrosol, are the main nutraceutical substances of EVOO. These substances have been suggested to have the ability to modulate aging-associated processes. In experimental models, it has been shown that EVOO with high concentrations of polyphenols has anti-inflammatory and anti-oxidant properties. Indeed, it was observed that hydroxytyrosol and oleocanthal inhibit the cyclooxygenases (COX-1 and -2) responsible for prostaglandin production; oleurope…
Per una lettura socio-economica dei contesti abitativi: L’insula I del Quartiere ellenistico-romano di Agrigento. La domus I A – I B
2021
In linea con le ultime ricerche organizzate dal Parco Archeologico Regionale Valle dei Templi di Agrigento, il cui scopo è la conoscenza dell'antica città di Akragas/Agrigentum come sistema integrato e unitario, si è dedicata nuova attenzione alle forme dell'abitare, in particolare nell'area del cosiddetto "Quartiere ellenistico-romano". Quest'area fu scavata negli anni '50 e '60 del secolo scorso, ma è con la pubblicazione di E. De Miro, avvenuta solo nel 2009, che è stato possibile conoscere i risultati delle indagini. In questo contributo ci si vuole concentrare sull'isolato I del Quartiere, contraddistinto da due grandi abitazioni (I A/B e I E/F) che dominano l'area pubblica dell'agorà.…
Perusjoukon kokonaissumman estimointi Coxin regressiolla ja logistisella regressiolla : sovellus rakennusten aloitustilastoon
2012
« Actualités d’Alphonse Legros »
2018
National audience; Né à Dijon en 1837, Alphonse Legros gagne Paris où il suit les cours de la Petite école de dessin de Jean-Hillaire Belloc. En 1854, il commence à copier les œuvres du Louvre, en 1855 il s’inscrit à l’Académie des beaux-arts. Dès 1857, il expose au Salon son Portrait du père de l’artiste, avant de s’installer à Londres en 1863. Il est nommé professeur de gravure à la South Kensington School of Art, puis, en janvier 1876, à la mort d’Edward Poynter, Slade Professor à UCL jusqu’en 1892. Membre fondateur en 1862 de la Société des Aquafortistes, puis en 1880 de la Society of Painters-Etchers, dont l’influence sur le renouveau de la gravure et de l’art du livre illustré est not…
Segmentation and differential post-rift uplift at the Angola margin as recorded by the transform-rifted Benguela and oblique-to-orthogonal-rifted Kwa…
2010
29 pages; International audience; We analyse tectonic and sedimentary field and subsurface data for the Angola onshore margin together with free-air gravity anomaly data for the offshore margin. This enables us to characterize the mode of synrift tectonism inherited from the Precambrian and its impact on the segmentation of the Angola margin. We illustrate that segmentation by the progressive transition from the Benguela transform-rifted margin segment to the oblique-rifted South Kwanza and orthogonal-rifted North Kwanza margin segments. The spatial variation in the intensity of post-rift uplift is demonstrated by the study of a set of geomorphic markers detected in the post-rift succession…
Oxidative stability of virgin olive oils
2001
An investigation was carried out on virgin olive oils of the Gentile (Larino), Gentile (Colletorto), Coratina, and Leccino varieties, harvested at different times, to assess their oxidation stability. The olive oils were analyzed by means of peroxide, K-232, and K 270 values at 1, 6, 12, and 18 mon of storage in green bottles, in the dark, at temperatures ranging from a mean of 6degreesC in winter to 12degreesC in summer. A subsample was also oven-tested at 75degreesC and then analyzed on a weekly basis using the same oxidative parameters. The less ripe the olives (harvested in the same area, during 1 mon), the more resistant the olive oils were to forced oxidation. The amount of total phen…
Alternariol-induced cytotoxicity in Caco-2 cells. Protective effect of the phenolic fraction from virgin olive oil.
2014
The extra virgin olive oil (EVOO) has been associated to antioxidant effects. The mycotoxin alternariol (AOH) can contaminate olives. The aims of this work were to determine the cytotoxic effects and reactive oxygen species (ROS) produced by AOH, tyrosol and oleuropein (two polyphenols of olive oil) and a real EVOO extract in Caco-2 cells. The MTT assay and the ROS production by the H2-DCFDA probe were used. Results demonstrated that AOH reduces cellular proliferation depending on concentration, whereas tyrosol and oleuropein did not (12.5-100 μM). The combination of AOH + oleuropein (50 μM) increased cell proliferation (24%) whereas, AOH + tyrosol decreased (47%) it. Besides, AOH increased…
Solvent-free microwave-assisted extraction of polyphenols from olive tree leaves: Antioxidant and antimicrobial properties
2017
International audience; Response surface methodology (RSM) and artificial neural networks (ANN) were evaluated and compared in order to decide which method was the most appropriate to predict and optimize total phenolic content (TPC) and oleuropein yields in olive tree leaf (Olea europaea) extracts, obtained after solvent-free microwave- assisted extraction (SFMAE). The SFMAE processing conditions were: microwave irradiation power 250-350 W, extraction time 2-3 min, and the amount of sample 5-10 g. Furthermore, the antioxidant and antimicrobial activities of the olive leaf extracts, obtained under optimal extraction conditions, were assessed by several in vitro assays. ANN had better predic…
Ecología de los crustáceos dominantes en los lagos de la Antártida marítima
2016
La presente tesis aborda el estudio ecológico de los dos crustáceos más abundantes en los lagos de La Península Byers (Islas Shetland del Sur, Antártida), el anostráceo Branchinecta gaini y el copépodo Boeckella poppei. Esta región es considerada una de las zonas con mayor interés desde el punto de vista limnológico dentro del continente antártico. Los estudios realizados en los sistemas acuáticos de esta región son relativamente recientes aunque amplios, no obstante existe todavía un sesgo de carencia en lo que respecta al conocimiento de la ecología de estos crustáceos. Las condiciones climáticas de la Antártida marítima, menos severas que las de la región continental, conllevan la existe…
New insights to assess the consolidation of stone materials used in built heritage: the case study of ancient graffiti (Tituli Picti) in the archaeol…
2020
AbstractTituli Picti are an ancient form of urban graffiti very common in the archaeological site of Pompeii (Naples, South—Italy). They are generally made of red pigments applied on walls of Campanian ignimbrite. This paper deals with a scientific investigation aimed to their conservation. This is a challenging task since it requires a multidisciplinary approach that includes restorers, archaeologists and conservation scientists. The study has provided suggestions on the proper way to conserve Tituli Picti over time. In the present work, several specimens of Campanian ignimbrite were painted with red earth pigment; lime and Arabic gum have been used as binders as well. Such painted stones …