Results 131 to 140 of about 23,252 (283)

A method to search for topological signatures in the angular distribution of cosmic objects

, 2005
We present a method to search for large angular-scale correlations, termed topological signatures, in the angular distribution of cosmic objects, which does not depend on cosmological models or parameters and is based only on the angular coordinates of ...
A. Bernui, Bernui, Bernui, de Oliveira-Costa, de Oliveira-Costa, Ellis, Fagundes, Friedmann, Gomero, Gomero, Gomero, Gomero, Lachièze-Rey, Lehoucq, Lemaître, Starobinsky, T. Villela, Uzan   +17 more
core   +1 more source

The coelurosaur theropods of the Romualdo formation, early Cretaceous (Aptian) of Brazil: Santanaraptor placidus meets Mirischia asymmetrica

The Anatomical Record, EarlyView.
Abstract The upper carbonate concretion levels of the Romualdo Formation (Aptian, Brazil) have yielded several theropod dinosaur remains, including spinosaurids and the coelurosaurs Santanaraptor placidus and Mirischia asymmetrica, the phylogenetic affinities of which are controversial.
Rafael Delcourt, Orlando Nelson Grillo, Christophe Hendrickx, Maximilian Kellermann, Max Cardoso Langer   +4 more
wiley   +1 more source

Simultaneous two hemisphere observations of the presence of polar patches in the nightside ionosphere

Annales Geophysicae
The presence of polar patches as observed simultaneously in the same magnetic meridian of opposite nightside ionospheres by coherent and incoherent scatter radars are described.
A. S. Rodger, M. Pinnock, J. R. Dudeney, J. Waterman, O. de la Beaujardiere, K. B. Baker   +5 more
doaj  

Overview of the 2015 St. Patrick’s day storm and its consequences for RTK and PPP positioning in Norway

Journal of Space Weather and Space Climate, 2016
The 2015 St. Patrick’s day storm was the first storm of solar cycle 24 to reach a level of “Severe” on the NOAA geomagnetic storm scale. The Norwegian Mapping Authority is operating a national real-time kinematic (RTK) positioning network and has in ...
Jacobsen Knut Stanley, Andalsvik Yngvild Linnea   +1 more
doaj   +1 more source

Water ice at low to midlatitudes on Mars

, 2011
In this paper, we analyze water ice occurrences at the surface of Mars using near-infrared observations, and we study their distribution with a climate model. Latitudes between 45{\deg}S and 50{\deg}N are considered.
Aharonson, Bibring, Bibring, Byrne, Carr, Carrozzo, Christensen, Christensen, Clifford, Costard, Dickson, Dickson, Dundas, Farrell, Feldman, Forget, Forget, Forget, François Forget, Haberle, Head, Hecht, Heldmann, Hourdin, Hourdin, John Mustard, Joshi, Joshi, Jouglet, Kieffer, Kossacki, Kreslavsky, Kreslavsky, Langevin, Langevin, Lemmon, Levrard, Madeleine, Malin, Mangold, Mathieu Vincendon, Mischna, Mohlmann, Montmessin, Morozova, Mustard, Neukum, Niles, Parente, Pavlov, Price, Putzig, Schmitt, Schon, Schorghofer, Schorghofer, Smith, Spiga, Spiga, Spinrad, Squyres, Vincendon, Vincendon, Vincendon, Vincendon, Williams, Williams, Zorzano   +67 more
core   +1 more source

Re‐evaluation of a soft crested Edmontosaurin, with implications for hadrosaurid life appearance and diversity

The Anatomical Record, EarlyView.
Abstract Hadrosaurid dinosaurs are generally regarded as “crested” or “non‐crested” depending on the presence or absence of a bony cranial crest. At least one supposedly “non‐crested” hadrosaur is known to have possessed a soft tissue cranial crest (or comb), based on an exceptionally preserved “mummified” specimen. Here we redescribe this specimen and
Henry S. Sharpe, Phil R. Bell, Ian Baylatry, Robin Sissons, Corwin Sullivan   +4 more
wiley   +1 more source

Topological and geometric decomposition of nematic textures

, 2012
Directional media, such as nematic liquid crystals and ferromagnets, are characterized by their topologically stabilized defects in directional order. In nematics, boundary conditions and surface-treated inclusions often create complex structures, which ...
G. E. Volovik, G. E. Volovik, I. E. Dzyaloshinskii, M. Kleman, O. D. Lavrentovich, P. G. de Gennes, Simon Čopar, Slobodan Žumer   +7 more
core   +1 more source

Oldest well‐preserved euprimate petrosal, from the early Eocene of India (Vastan Lignite Mine, Gujarat)

The Anatomical Record, EarlyView.
Abstract An exquisitely preserved, isolated partial petrosal with associated fragmentary stapes is described from the Vastan Lignite Mine (Gujarat, India), dated to the early Eocene (~54.5 Ma). Several anatomical traits (e.g., large petrosal plate; posterolateral entry of the internal carotid artery to the tympanic cavity; bony tubes surrounding the ...
Mary T. Silcox, Kenneth D. Rose, Rachel H. Dunn, Kishor Kumar, Rajendra S. Rana, Ashok Sahni, Lachham Singh, Thierry Smith, Jordan W. Crowell   +8 more
wiley   +1 more source

Effect of Polar Cap Patches on the High‐Latitude Upper Thermospheric Winds

Journal of Geophysical Research: Space Physics
AbstractThis study focuses on the poorly known effect of polar cap patches (PCPs) on the ion‐neutral coupling in the F‐region. The PCPs were identified by total electron content measurements from the Global Navigation Satellite System (GNSS) and the ionospheric parameters from the Defense Meteorological Satellite Program spacecraft.
L. Cai, A. Aikio, S. Oyama, N. Ivchenko, H. Vanhamäki, I. Virtanen, S. Buchert, M. L. Mekuriaw, Y. Zhang   +8 more
openaire   +3 more sources

Production, characterization and immobilization of protease produced by Periconia byssoides

Biofuels, Bioproducts and Biorefining, EarlyView.
Abstract The present work sought to broaden the repertoire of proteolytic biocatalyst formulations by producing, purifying, characterizing, and identifying suitable immobilization carriers for an extracellular protease from the filamentous fungi Periconia byssoides.
Juliana Mota de Oliveira, Pedro Fernandes, Luís Fernando Pascholati Gusmão, Sandra Aparecida de Assis   +3 more
wiley   +1 more source