Search results for "Spall"
showing 10 items of 69 documents
Riga experience in spallation neutron target related investigations
2002
Abstract Mercury has awakened interest as a potential material for spallation neutron source targets. Institute of Physics, University of Latvia has a 30 years experience of investigations in mercury. As specially projected building includes a 350 m2 experimental hall. The largest loop, containing 5×103 kg of Hg, can be transferred for solution of different tasks. As the first example results are presented when integral developed pressure and local (distribution of void fraction) characteristics of a two-phase mercury/gas riser were investigated. Second example – investigation of velocity fields and heat transfer conditions close to the beam entrance window in the SINQ target thermohydrauli…
Imaging con risonanza magnetica delle neuropatie da intrappolamento della spalla
2010
Obiettivi didattici: Descrivere e caratteristiche alla risonanza magnetica (RM) delle neuropatie da intrappolamento comuni della spalla: - sindrome di Parsonage-Turner - sindrome del quadrilatero (neuropatia ascellare) - sindrome del nervo soprascapolare Introduzione: Le neuropatie da intrappolamento sono caratterizzate da alterazione della funzionalità dei nervi secondaria alla compressione da parte di forze meccaniche o dinamiche. La compressione può essere acuta, cronica o intermittente. Non di rado neuropatie compressive sono dovute a lesioni occupanti spazio, come tumori, cisti, processi infiammatori, o condizioni post-traumatiche. Descrizione: L'aspetto RM della sindrome di Parsonage-…
Sabella spallanzanii mucus contain a galactose-binding lectin able to agglutinate bacteria. Purification and characterization
2019
Lectins are present in almost all living organisms and are involved in several biological processes, including immune responses. In the present study, a calcium dependent galactose-binding lectin exhibiting an apparent MW of 43 kDa has been characterized and purified from the mucus of the polychaete Sabella spallanzanii by using both affinity chromatography and high-pressure liquid chromatographic methods. Its agglutinating activity towards rabbit erythrocytes was significantly modified by the addition of calcium or EDTA. The activity was optimal at temperature values comprised between 4 and 18 °C, maintain a 50% of activity between 20 and 37 °C, was significant deleted after exposure at 50…
Study of immunotoxicity responses of Sabella spallanzanii exposed to copper sulphate
2022
Attività antibatterica e agglutinante nel muco di Sabella Spallanzanii (Annelida, Polychaeta)
2009
Tendinopatie calcifiche di spalla: Trattamento con onde d’urto extracorporee.
2009
Imaging integrato della spalla in medicina sportiva. Atti del Forum mediterrano di Medicina dello Sport - Attualità cliniche in Medicina dello Sport …
2007
Microinstabilità di spalla
2009
Simulation of abrasion–corrosion at high temperatures by in situ pulsed laser spallation of oxide films
1999
Abstract A pulsed Nd:YAG laser combined with a thermogravimetric cell has been used to spall in situ the oxide films grown on a Fe–2.25Cr–1Mo steel at high temperature in oxidizing media. This technique allows to define the oxidation rate of bare metal surfaces, which can be used to simulate the corrosion-dominated regime during slurry–erosion tests.
Water vapor effect on high-temperature oxidation behavior of Fe3Al intermetallics
2009
Fe3Al intermetallics (Fe3Al, Fe3Al-Zr, Fe3Al-Zr,Mo and Fe3Al-Zr, Mo, Nb) were oxidized at 950 °C in dry and humid (11 vol% water) synthetic air. Thermogravimetric measurements showed that the oxidation rates of the tested intermetallics were lower in humid air than in dry air (especially for Fe3Al-Zr, Mo and Fe3Al-Zr, Mo, Nb). The addition of small amounts of Zr, Mo or Nb improved the kinetics compared with that of the undoped Fe3Al. Fe3Al showed massive spallation, whereas Fe3Al-Zr, Fe3Al-Zr, Mo and Fe3Al-Zr, Mo, Nb produced a flat, adherent oxide layer. The rapid transformation of transient alumina into alpha alumina may explain the decrease in the oxidation rate in humid air.