Results 31 to 40 of about 59,238 (279)

Population coding of figure and ground in natural image patches by V4 neurons.

PLoS ONE, 2020
Segmentation of a natural scene into objects and background is a fundamental but challenging task for recognizing objects. Investigating intermediate-level visual cortical areas with a focus on local information is a crucial step towards understanding ...
Yukako Yamane, Atsushi Kodama, Motofumi Shishikura, Kouji Kimura, Hiroshi Tamura, Ko Sakai   +5 more
doaj   +1 more source

Pentacyclic Triterpene Profile and Its Biosynthetic Pathway in Cecropia telenitida as a Prospective Dietary Supplement

Molecules, 2021
Promising research over the past decades has shown that some types of pentacyclic triterpenes (PTs) are associated with the prevention of type 2 diabetes (T2D), especially those found in foods.
Gustavo Gutiérrez, Laura Marcela Valencia, Deisy Giraldo-Dávila, Marianny Y. Combariza, Elkin Galeano, Norman Balcazar, Aram J. Panay, Alejandra Maria Jerez, Guillermo Montoya   +8 more
doaj   +1 more source

Direct observation of the washboard noise of a driven vortex lattice in a high-temperature superconductor, Bi2Sr2CaCu2Oy

, 2000
We studied the conduction noise spectrum in the vortex state of a high-temperature superconductor, Bi2Sr2CaCu2Oy, subject to a uniform driving force. Two characteristic features, a broadband noise (BBN) and a narrow-band noise (NBN), were observed in the
A. E. Koshelev, A. M. Troyanovski, A. Maeda, A. Maeda, A. Schilling, A. T. Fiory, Atsutaka Maeda, C. J. Olson, D. Domínguez, E. Zeldov, F. Pardo, G. Blatter, G. Grüner, G. Grüner, G. W. Crabtree, H. Matsukawa, H. Pastoriza, Haruhisa Kitano, J. A. Fendrich, J. M. Harris, J. R. Clem, K. Moon, Katsuya Iwaya, L. Balents, L. Balents, L. Balents, P. Le Doussal, Ryuichi Abiru, S. Ryu, T. Giamarchi, T. Giamarchi, T. Giamarchi, T. Hanaguri, T. Matsuda, T. Nattermann, T. Sasagawa, T. Tsuboi, T. Tsuboi, U. Welp, U. Yaron, Yoshihiko Togawa   +40 more
core   +1 more source

New periodic variable stars coincident with ROSAT sources discovered using SuperWASP [PDF]

, 2007
We present optical lightcurves of 428 periodic variable stars coincident with ROSAT X-ray sources, detected using the first run of the SuperWASP photometric survey. Only 68 of these were previously recognised as periodic variables.
A. Collier Cameron, A. J. Norton, Akerlof, Alekseev, Alekseev, B. Enoch, Bejgman, Boller, Bouvier, Bouvier, Bouvier, Brancewicz, Brelstaff, C. A. Haswell, C. Hellier, Chrastina, Collier Cameron, Collier Cameron, D. J. Christian, D. M. Wilson, D. Pollacco, Deeter, Dempsey, Engle, Evans, Feast, Gershberg, Hall, Hall, Hartmann, I. Skillen, J. Irwin, J. P. Nicholas, Jeffries, K. Horne, Koen, Loomis, M. Gallaway, Meinunger, Monet, N. Parley, Neuhauser, P. J. Wheatley, Pallavicini, Pettersen, Pizzolato, Pribulla, Qian, R. A. Street, R. G. West, R. Ryans, Rosner, S. R. Kane, Schmidt, Schmidt, Selam, Skillen, Stanishev, Strassmeier, T. A. Lister, Tamuz, Turner, Vilhu, W. I. Clarkson, Walter, Wegner, Wheatley, Zhang   +67 more
core   +3 more sources

Thermal phase diagrams of columnar liquid crystals

, 1998
In order to understand the possible sequence of transitions from the disordered columnar phase to the helical phase in hexa(hexylthio)triphenylene (HHTT), we study a three-dimensional planar model with octupolar interactions inscribed on a triangular ...
A. Caillé, A. Caillé, D. Sénéchal, E. F. Gramsbergen, E. Fontes, G. Lamoureux, G. Yan, H.-Y. Choi, M. B. Walker, M. Collins, M. Cotrait, M. Hébert, M. Hébert, M. Hébert, M. Hébert, M. L. Plumer, M. Pesquer, P. Bak, S. Chandrasekhar, S. Redner, T. Horiguchi, W. M. Saslow, W. Selke   +22 more
core   +1 more source

X-ray diffraction of a disordered charge density wave [PDF]

, 2003
We study the X-ray diffraction spectrum produced by a collectively pinned charge density wave (CDW), for which one can expect a Bragg glass phase. The spectrum consists of two asymmetric divergent peaks. We compute the shape of the peaks, and discuss the
Giamarchi, Thierry, Rosso, Alberto
core   +2 more sources

ARE SPATIAL FREQUENCY CUES USED FOR WHISKER-BASED ACTIVE DISCRIMINATION?

Frontiers in Behavioral Neuroscience, 2014
Rats are highly skilled in discriminating objects and textures by palpatory movements of their whiskers. If they used spatial frequency cues, they would be able to optimize performance in a stimulus dependent way - by moving their whisker faster or ...
Petya eGeorgieva, Dominik eBrugger, Cornelius eSchwarz   +2 more
doaj   +1 more source

Position location and data collection system and method Patent [PDF]

, 1969
Development of telemetry system for position location and data ...
Hilton, G. E., Hollenbaugh, R. C., Laughlin, C. R., Jr., Lavigne, R. C.   +3 more
core   +1 more source

Structural Phase Transitions in SrRh2As2

, 2011
SrRh2As2 exhibits structural phase transitions reminiscent to those of BaFe2As2, but crystallizes with three polymorphs derived from the tetragonal ThCr2Si2-type structure. The structure of \alpha-SrRh2As2 is monoclinic with a = 421.2(1) pm, b = 1105.6(2)
Dusek, M., Johrendt, D., Petricek, V., Zinth, V.   +3 more
core   +1 more source

HILBERT MODULES—SQUARE ROOTS OF POSITIVE MAPS [PDF]

Quantum Probability and Related Topics, 2011
We reflect on the notions of positivity and square roots. We review many examples which underline our thesis that square roots of positive maps related to *-algebras are Hilbert modules. As a result of our considerations we discuss requirements a notion of positivity on a *-algebra should fulfill and derive some basic consequences.
openaire   +3 more sources