Search results for "dam"

Ab initio modeling of radiation damage in MgF2 crystals

2014

Abstract MgF2 with a rutile structure is important radiation-resistant material with numerous applications due to its transparency from vacuum ultraviolet to infrared range of photon energies. We present and discuss the results of calculations for basic radiation defects in this crystal. The study is based on the large scale ab initio DFT calculations using hybrid B3PW exchange–correlation functional and atomic basis set. We analyzed the electronic structure, atomic displacements, charge density distribution as well as defect formation energies using large supercells. We compared properties of close and well separated F−H (Frenkel) defect pairs as well as individual defects. We simulated al…

Radiation damage in zircon

2003

A single, zoned, Sri Lankan zircon exhibits a range of microstructures from crystalline to nearly amorphous that are the result of radiation damage over a dose range of 2.1–10.1·1015 α-decay events/mg (0.16–0.47 dpa). The zones in the crystal were examined at a variety of length scales using optical microscopy, micro-Raman spectroscopy, electron microprobe analysis, and transmission electron microscopy. Birefringence varies linearly with dose: birefringence = −4.71·10−18 /g· D α + 4.86·10−2. Full width at half maximum (FWHM) measurements of the B1g(ν3) peak, as determined by micro-Raman spectroscopy, were used to estimate the extent of radiation damage in each zone. The radiation dose (calc…

<title>Heavy-ion induced damage and reduction of dislocation mobility in LiF single crystals</title>

2006

Ion-induced reduction of dislocation mobility in LiF crystals irradiated with swift heavy (U) and light (Ni) ions of a specific energy of 11 MeV per nucleon at fluences between 106 and 1011 ions/cm2 was studied. The arm length of dislocation rosettes produced by indentation on (100) irradiated surface was measured. It has been found that in the case of heavy ions the threshold fluence (106 ions/cm2) for impeding of dislocation arms is about 3 orders of magnitude lower than that for light ions. The results indicate that ion-induced defect aggregates play the dominating role in the impeding of dislocations. Heavy ions, which produce defect aggregates in the track core, cause also a stronger e…

Déclaration et vérification des créances. Annulation d'une sentence arbitrale pour méconnaissance de la règle d'ordre public d'extinction des créance…

2012

International audience; (Civ. 1re, 28 septembre 2011, n° 10-18.320, arrêt n° 873 F-P+B+I, Carrefour proximité France c/ Sté le Castel, D. 2011. 2410, obs. X. Delpech ; Rev. sociétés 2011. 732, obs. P. Roussel Galle)

Déclaration et vérification des créances. Jugement de condamnation de la caution. Autorité de la chose jugée. Extinction postérieure de la créance pr…

1999

International audience; (Com. 23 juin 1998, Pegeot c/ Crédit Lyonnais ; CA Versailles, 1re ch. A., 29 oct. 1998, Banque Parisienne de Crédit c/ Franco)

Déclaration et vérification des créances. La poursuite et la condamnation de la caution devant le juge du cautionnement sont possibles avant la décla…

2009

International audience; (Com. 16 sept. 2008, pourvoi n° 07-16.499, arrêt n° 866 F-D, Sté Bred Banque populaire c/ Cts Y., Rev. proc. coll. 2008, n° 4, p. 57, note P.-M. Le Corre)

Créance d'astreinte. L'astreinte prononcée à l'occasion d'une condamnation antérieure au jugement d'ouverture, même liquidée après le jugement d'ouve…

2003

International audience; (Com. 21 janv. 2003, Gimenez c/Guigue, pourvoi n° 01-01-761, arrêt n° 143 FS-P+B, D. 2003.421, obs. A. Lienhard)

Déclaration et vérification des créances. Un créancier n'ayant pas déclaré sa créance au passif de la procédure collective d'un codébiteur peut pours…

2009

International audience; (Com. 16 sept. 2008, pourvoi n° 07-15.646, arrêt n° 860 F-D, Mme Chaponnais c/ Caisse d'épargne de Basse-Normandie, Gaz. proc. coll. 2008, n° 4, p. 56, note P.-M. Le Corre)

¿De disidentes a vasallos?

2003

Drowned Landscapes: The Rediscovered Archaeological Heritage of the Mosul Dam Reservoir

2023

Like natural catastrophes or armed conflicts, resource extraction projects herald the alteration or destruction of natural and cultural landscapes alike. Dam construction is a major threat to cultural heritage in Western Asian archaeology. One event may result in obliterating hundreds of sites, most of which never reappear or do so only sporadically following cyclical water fluctuation. Destruction of sites remains ongoing, necessitating constant assessment of damage and the establishment of strategies of documentation and maintenance. This paper proposes a new paradigm for future safeguarding and, more widely, a new tool for managing contiguous terrestrial and lacustrine cultural zones. It…