Search results for "SHED"

Structure of longitudinal chromomagnetic fields in high energy collisions

2014

We compute expectation values of spatial Wilson loops in the forward light cone of high-energy collisions. We consider ensembles of gauge field configurations generated from a classical Gaussian effective action as well as solutions of high-energy renormalization group evolution with fixed and running coupling. The initial fields correspond to a color field condensate exhibiting domain-like structure over distance scales of order the saturation scale. At later times universal scaling emerges at large distances for all ensembles, with a nontrivial critical exponent. Finally, we compare the results for the Wilson loop to the two-point correlator of magnetic fields.

Pattern Dystrophy of the Macula in a Case of Steinert Disease

2013

<b><i>Introduction:</i></b> Myotonic dystrophies are typically associated with ocular complications like ptosis, weakness of the ocular muscle and cataracts, but also with less recognized retinal changes. <b><i>Case Report:</i></b> A 41-year-old female with type 1 myotonic dystrophy complained of progressive vision loss. Slit lamp examination revealed the presence of typical bilateral polychromatic cataract with posterior subcapsular component. Dilated fundus examination was remarkable for bilateral macular depigmented changes. Multimodal imaging analysis of the macula suggested the presence of a butterfly-shaped pattern dystrophy. <b>&l…

Hugh MacDiarmid’s Typescript ‘Hugh MacDiarmid and the Scottish Landscape, by Valda Trevlyn’ : Landscape as Sign

2013

International audience; In a 1911 letter, the young Hugh MacDiarmid told his professor, George Ogilvie, of his love of mountaineering: “I am constantly crossing mountains, by unutterably rocky tracks”, foretelling his life-long fascination for the Scottish landscape. MacDiarmid’s nationalist use of the Scottish scenery has already been much commented upon. However, we would like to introduce an unpublished typescript entitled “Hugh MacDiarmid and the Scottish Landscape, by Valda Trevlyn” . The text was undoubtedly written by MacDiarmid himself, not by his wife, Valda, in 1939. Projected as “a study of the descriptive elements” of his “vision of Scotland”, this chaotic prose work mostly cons…

Tres artistas en el exilio: Max Aub, Félix Candela y Josep Renau

2020

Three artists in exile focuses on the historical diaspora provoked by the Spanish civil war (1936- 1939), and how it influenced three prominent figures of the cultural scene of that period: the writer and typographer Max Aub Mohrenwitz (Paris, 1903-Ciudad de Mexico, 1972); the architect Félix Candela Outeriño (Madrid, 1910-Raleigh, US, 1977); and the artist Josep Renau Berenguer (Valencia, 1907-Berlín, 1982). They are the three protagonists of this article, who were simultaneously living in Mexico during the exile and who made notable contributions in the fields of arts and humanities (Max Aub), architecture (Félix Candela), and graphic design and photomontage (Josep Renau). While they were…

SHEDDING OF ANGIOGENIC FACTORS BY BRAIN CELLS

2007

Extracellular membrane vesicles can mediate intercellular transfer of molecules

2012

Many eukaryotic cell types, including neural cells, release into the extracellular environment vesicles of different sizes and composition. Neurons and astrocytes shed extracellular vesicles which contain FGF2 and VEGF and could be involved in interaction with endothelial cells, to form the blood-brain barrier. Also brain tumor cells, such as glioblastomas, release vesicles in the extracellular space. Microvesicles (MVs) shed from G26/24 oligodendro¬glioma cells were previously reported to contain FAS-L and to cause a reproducible, dose-dependent, inhibitory effect on neurite outgrowth, and neuronal apoptosis, when added to primary cultures of rat cortical neurons. More recently, they were …

MAIFINITO

2014

Grandi quantità di edifici mai completati hanno prodotto speciali paesaggi extra-urbani, ma anche in alcuni casi interni a contesti urbani consolidati. Edifici che subiscono una condizione insita nel costruire: un atto che richiede una quantità di tempo – appunto di "costruzione" – dalla concezione alla realizzazione fino all’inizio del loro ciclo di vita, quindi mai immediato. Un edificio incompleto rimane lì dove è stato pensato e costruito, a volte per molti decenni, a differenza di un progetto, che come tanti, può rimanere in un cassetto. Il territorio di osservazione di partenza di questo libro è l’Italia del Sud e la Sicilia degli ultimi 50 anni, dove il fenomeno degli edifici "maifin…

The effects of α-secretase ADAM10 on the proteolysis of neuregulin-1

2009

Although ADAM10 is a major alpha-secretase involved in non-amyloidogenic processing of the amyloid precursor protein, several additional substrates have been identified, most of them in vitro. Thus, therapeutical approaches for the prevention of Alzheimer's disease by upregulation of this metalloproteinase may have severe side effects. In the present study, we examined whether the ErbB receptor ligand neuregulin-1, which is essential for myelination and other important neuronal functions, is cleaved by ADAM10. Studies with beta- and gamma-secretase inhibitors, as well as with the metalloproteinase inhibitor GM6001, revealed an inhibition of neuregulin-1 processing in human astroglioma cell …

NOVEL ROUTES OF CELL TO CELL COMUNICATIONS AMONG BRAIN CELLS

2006

Influence of anthropogenic activity on the lead isotope signature of Thau Lake sediments (southern France): origin and temporal evolution

2000

Lead concentrations and isotopic compositions were determined on both bulk sediments deposited in the Thau lake in southern France during the last 200 years, and leachates derived from a series of sequential leachings of the sediments, making it possible to identify the sources, natural (i.e. indigenous lithologic) or anthropogenic, and to quantify the different inputs of Pb. Two distinct inputs of Pb could be distinguished. One of these corresponds to the terrigenous material entering the basin, representative of the local natural Pb ‘background’. Its supply remained steady most of the time with 206Pb/207Pb ratios of 1.200±0.003, except at the time of heavy storms producing voluminous and …