Search Results - "Xavier, J C"

Finite-size corrections of the entanglement entropy of critical quantum chains by Xavier, J. C., Alcaraz, F. C.

“…Using the density matrix renormalization group, we calculated the finite-size corrections of the entanglement alpha -Renyi entropy of a single interval for…”
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Influence of age, sex and breeding status on mercury accumulation patterns in the wandering albatross Diomedea exulans by Tavares, S., Xavier, J.C., Phillips, R.A., Pereira, M.E., Pardal, M.A.

“…Although mercury bio-amplifies through the food chain and accumulates in top predators, mercury concentrations in tissues of the wandering albatross are…”
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Dwarf males of giant warty squid Kondakovia longimana and a description of their spermatophores by Laptikhovsky, V., Xavier, J. C.

“…Antarctic squids are widely known to play an important role in the diet of various Antarctic predators, although the biology of those squids and how that…”
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Cephalopods habitat and trophic ecology: historical data using snares penguin as biological sampler by Guímaro, H. R., Thompson, D. R., Paiva, V. H., Ceia, F. R., Cunningham, D. M., Moors, P. J., Xavier, J. C.

“…In the Southern Ocean and adjacent waters, early stages of cephalopods play an important role in food webs as prey to top predators, but few is known regarding…”
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Seasonal prey switching in non-breeding gentoo penguins related to a wintertime environmental anomaly around South Georgia by Xavier, J. C., Velez, N., Trathan, P. N., Cherel, Y., De Broyer, C., Cánovas, F., Seco, J., Ratcliffe, N., Tarling, G. A.

“…Information is needed on how anomalous environmental conditions affect important Antarctic ecological sentinels during the winter. Using a non-invasive method…”
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Distribution, habitat and trophic ecology of Antarctic squid Kondakovia longimana and Moroteuthis knipovitchi: inferences from predators and stable isotopes by Seco, J., Roberts, J., Ceia, F. R., Baeta, A., Ramos, J. A., Paiva, V. H., Xavier, J. C.

“…Cephalopods have a key role in the marine environment though knowledge of their distribution and trophic ecology is limited by a lack of observations. This is…”
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Eastern rockhopper penguins Eudyptes filholi as biological samplers of juvenile and sub-adult cephalopods around Campbell Island, New Zealand by Xavier, J. C., Cherel, Y., Ceia, F. R., Queirós, J. P., Guimarães, B., Rosa, R., Cunningham, D. M., Moors, P. J., Thompson, D. R.

“…Early life-history stages of cephalopods are known to play an important role as prey in food webs of the Southern Ocean, but little information is available…”
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A comparison between the Iosipescu and off-axis shear test methods for the characterization of Pinus Pinaster Ait by Xavier, J.C., Garrido, N.M., Oliveira, M., Morais, J.L., Camanho, P.P., Pierron, F.

“…In this work, the applicability of the Iosipescu and off-axis test methods for the shear characterization of clear wood was investigated. Wood of maritime pine…”
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Seasonal changes in the diet and feeding behaviour of a top predator indicate a flexible response to deteriorating oceanographic conditions by Xavier, J. C., Louzao, M., Thorpe, S. E., Ward, P., Hill, C., Roberts, D., Croxall, J. P., Phillips, R. A.

“…Shifts in the diet of top predators can be linked to changes in environmental conditions. In this study, we tested relationships between environmental…”
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Determining prey distribution patterns from stomach-contents of satellite-tracked high-predators of the Southern Ocean by Xavier, J. C., Tarling, G. A., Croxall, J. P., Rahbek, Carsten

“…The distribution of many cephalopod, crustacean and fish species in the Southern Ocean, and adjacent waters, is poorly known, particularly during times of the…”
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Choosing the future of Antarctica by Rintoul, S. R., Chown, S. L., DeConto, R. M., England, M. H., Fricker, H. A., Masson-Delmotte, V., Naish, T. R., Siegert, M. J., Xavier, J. C.

“…We present two narratives on the future of Antarctica and the Southern Ocean, from the perspective of an observer looking back from 2070. In the first…”
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Predator-prey interactions: why do larger albatrosses eat bigger squid? by Xavier, J. C., Croxall, J. P.

“…The relationship between predator sizes and prey sizes is well documented for terrestrial but rarely for marine ecosystems. We show that wandering albatrosses,…”
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Dimerization induced by the RKKY interaction by Xavier, J C, Pereira, R G, Miranda, E, Affleck, I

“…We report the presence of spin dimerization in the ground state of the one-dimensional Kondo lattice model at quarter filling. The emergence of this new phase…”
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Interannual variation in the diets of two albatross species breeding at South Georgia: implications for breeding performance by Xavier, J. C., Croxall, J. P., Reid, K.

“…The diet and breeding performance of Grey‐headed Albatrosses Thalassarche chrysostoma and Black‐browed Albatrosses Diomedea melanophris breeding at Bird…”
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Foraging ecology and interactions with fisheries of wandering albatrosses (Diomedea exulans) breeding at South Georgia by Xavier, J. C., Trathan, P. N., Croxall, J. P., Wood, A. G., Podestá, G., Rodhouse, P. G.

“…Knowledge about the areas used by the foraging wandering albatross, Diomedea exulans, its prey and overlap with longline fisheries is important information not…”
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Applying new tools to cephalopod trophic dynamics and ecology: perspectives from the Southern Ocean Cephalopod Workshop, February 2-3, 2006 by Jackson, G. D, Bustamante, P, Cherel, Y, Fulton, E. A, Grist, E. P. M, Jackson, C. H, Nichols, P. D, Pethybridge, H, Phillips, K, Ward, R. D, Xavier, J. C

“…A two day workshop on Southern Ocean cephalopods was held in Hobart, Tasmania, Australia prior to the triennial 2006 Cephalopod International Advisory Council…”
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Feeding strategies and diets of breeding grey-headed and wandering albatrosses at South Georgia by Xavier, J. C, Croxall, J. P, Trathan, P. N, Wood, A. G

“…The foraging areas and diets of the grey-headed albatross Thalassarche chrysostoma and wandering albatross Diomedea exulans were studied in March/April 2000 at…”
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Entanglement entropies in conformal systems with boundaries by Taddia, L., Xavier, J. C., Alcaraz, F. C., Sierra, G.

“…We study the entanglement entropies in one-dimensional open critical systems, whose effective description is given by a conformal field theory with boundaries…”
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N -leg spin- S Heisenberg ladders: A density-matrix renormalization group study by Ramos, F. B., Xavier, J. C.

“…We investigate the N-leg spin-S Heisenberg ladders by using the density matrix renormalization group method. We present estimates of the spin gap Delta sub(s)…”
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Entanglement entropy of the low-lying excited states and critical properties of an exactly solvable two-leg spin ladder with three-spin interactions by Eloy, D., Xavier, J. C.

“…In this work, we investigate an exactly solvable two-leg spin ladder with three-spin interactions. We obtain analytically the finite-size corrections of the…”
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