The Geoff Egan Memorial Lecture 2011. Artefacts, art and artifice: reconsidering iconographic sources for archaeological objects in early modern Europe

A first systematic analysis of historic domestic material culture depicted in contemporaneous Western painting and prints, c.1400-1800. Drawing on an extensive data set, the paper proposes to methodologies and hermeneutics for historical analysis and archaeological correspondence

Roche lobe effects on the atmospheric loss of "Hot Jupiters"

Observational evidence of a hydrodynamically evaporating upper atmosphere of HD209458b (Vidal-Madjar et al. 2003; 2004) and recent theoretical studies on evaporation scenarios of ``Hot Jupiters'' in orbits around solar-like stars with the age of the Sun indicate that the upper atmospheres of short-periodic exoplanets experience hydrodynamic blow-off conditions resulting in loss rates of the order of about 10^10 - 10^12 g s^-1 (Lammer et al. 2003; Yelle 2004; Baraffe et al. 2004; Lecavlier des Etangs et al. 2004; Jaritz et al. 2005, Tian et al. 2005; Penz et al. 2007). By studying the effect of the Roche lobe on the atmospheric loss from short-periodic gas giants we found, that the effect of the Roche lobe can enhance the hydrodynamic evaporation from HD209458b by about 2 and from OGLE-TR-56b by about 2.5 times. For similar exoplanets which are closer to their host star than OGLE-TR-56b, the enhancement of the mass loss can be even larger. Moreover, we show that the effect of the Roche lobe raises the possibility that ``Hot Jupiters'' can reach blow-off conditions at temperatures which are less than expected (< 10000 K) due to the stellar X-ray and EUV (XUV) heating.Comment: 4 pages, 2 figures, submitted to A&

The Black Alpine Pig – Rescue and Breeding

All breeds not meeting the new standards of performance disappeared. This was especially with pigs. Until recently everybody was convinced of the total loss of all autochthonous Alpine pig breeds! But in 2013 representatives of the Veterinary Faculty at Parma University found in a School Farm one last group of Valtellina pigs (also called Grison pig). The Alpine Network Pro Patrimonio Montano* continued the breed and found after extensive search tours two other relict groups to include and avoid inbreeding. The three provenances form today a “gene pool”, representing all alpine pig breeds. Three years after, there are again 73 breeding animals in 27 breeding groups in three countries. Earlier the black and spotted Alpine pigs were spread in the mountains of central and south-eastern Alpine regions from Switzerland to northwest Slovenia. Yet, no scientific data are available, but studies are currently undertaken.Tutte le razze che non hanno rispettato gli standard produttivi sono scomparse. Ciò è accaduto in particolare nell’ambito suinicolo. Fino a poco tempo fa erano tutti convinti della completa perdita di tutte le razze suine alpine autoctone! Ma nel 2013 alcuni membri della Facoltà di Medicina Veterinaria di Parma hanno trovato, in una fattoria didattica, un ultimo gruppo di maiali Valtellinesi (chiamato anche maiale Grigione). La rete alpina Pro Patrimonio Montano* ne ha continuato l’allevamento e ha trovato, dopo intense ricerche, altri due gruppi residui da includere ed evitarne la consanguineità. Questi tre gruppi, con diversa provenienza, costituiscono oggi il pool genetico che rappresenta tutte le razze suine alpine. Dopo tre anni, ci sono di nuovo 73 animali allevati distribuiti in 27 gruppi di allevamento in tre paesi. Precedentemente il Suino Nero e maculato delle Alpi era diffuse tra le montagne delle regioni centrali e sud-orientali delle Alpi Svizzere a nord-ovest della Slovenia. Eppure non sono ancora disponibili dati scientifici ma gli studi sono attualmente intraprese

Roche lobe effects on expanded upper atmospheres of short-periodic giant exoplanets

Theoretical studies and recent observational evidence of the expansion of the atmospheres of short-periodic exoplanets show that the atmospheres extend up to several planetary radii. This indicates that the atmospheres experience blow-off conditions. Because of the short orbital distance to their host stars, the expansion of the upper atmosphere is no longer radially symmetric, but depends on the direction to the central body, resulting in a deformation of the expanded atmosphere. We show the connection between atmospheric expansion, tidal forces and effects of the Roche potential and find that HD 209458 b, OGLE-TR-10 b and OGLE-TR-111 b are most likely in a state of classical hydrodynamical blow-off, because the distance where blow-off can occur is less than the distance to the Lagrangian point L1. On the other hand, OGLE-TR-56 b, OGLE-TR-113 b, OGLE-TR-132 b and TreS-1 experience a geometrical blow-off defined by the Roche lobe as proposed by Lecavelier des Etangs et al. (2004, A&A, 418, L1). Our results have important implications for the evolution of short periodic gas giants, because the Roche lobe overflow of the atmosphere can lead to lower mass loss rates over the exoplanets history, compared to gas giants which experience hydrodynamic expansion and loss unaffected by this boundary. Thus, massive exoplanets like OGLE-TR-56 b in very close orbital distances are subject to geometrical blow-off conditions, this results in a total mass loss for this particular exoplanet of the order of about 3 $\times$ 10-2 Mpl over the planets age, even if current mass loss rates of about 2 $\times$ 1011 g s-1 are calculated. If the exoplanet effected by the geometrical blow-off is more massive, the mass loss rate is even lower. However, giant exoplanets like HD 209458 b, OGLE-TR-10 b and OGLE-TR-111 b at orbital distances of about 0.05 AU may experience classical hydrodynamic blow-off conditions, which can result in higher mass loss rates. Thus, such planets may shrink to their core sizes during the X-ray and EUV active periods of their host stars as proposed by Lammer et al. (2003, ApJ, L121, 598) and Baraffe et al. (2004, A&A, 419, L13)

Exploring the role of sphingolipid machinery during the epithelial to mesenchymal transition program using an integrative approach

10.18632/oncotarget.7947Oncotarget71622295-2232