نتایج جستجو برای: asymmetric fields

تعداد نتایج: 309308  

Journal: :Neurocomputing 2006
X. Yu James J. Knierim I. Lee Harel Z. Shouval

Spatial firing fields (place fields) of rat hippocampal cells undergo changes when the rat runs stereotyped routes. Previously, Mehta et al. [Experience-dependent asymmetric shape of hippocampal receptive fields, Neuron 25 (2000) 700–715] indicated that spike timingdependent plasticity (STDP) might explain the observed shift of the place field center of mass and the development of skewness. In ...

1998
Dong Lai Yong-Zhong Qian

In proto-neutron stars with strong magnetic fields, the cross section for νe (ν̄e) absorption on neutrons (protons) depends on the local magnetic field strength due to the quantization of energy levels for the e (e+) produced in the final state. If the neutron star possesses an asymmetric magnetic field topology in the sense that the magnitude of magnetic field in the north pole is different fro...

2004
J. CRAIG

Spectropolarimetry of core collapse supernovae has shown that they are asymmetric and often, but not universally, bi-polar. The Type IIb SN 1993J and similar events showed large scatter in the Stokes parameter plane. SN 2002ap which showed very high photospheric velocities in early phases revealed that the dominant axes associated with hydrogen, with oxygen, and with calcium were all oriented s...

1998
Dong Lai Yong-Zhong Qian

In proto-neutron stars with strong magnetic fields, the cross section for νe (ν̄e) absorption on neutrons (protons) depends on the local magnetic field strength due to the quantization of energy levels for the e (e+) produced in the final state. If the neutron star possesses an asymmetric magnetic field topology in the sense that the magnitude of magnetic field in the north pole is different fro...

Journal: :Science 2008
David A Nicewicz David W C MacMillan

Photoredox catalysis and organocatalysis represent two powerful fields of molecule activation that have found widespread application in the areas of inorganic and organic chemistry, respectively. We merged these two catalysis fields to solve problems in asymmetric chemical synthesis. Specifically, the enantioselective intermolecular alpha-alkylation of aldehydes has been accomplished using an i...

Journal: :Annals of Applied Probability 2021

We consider the fluctuation fields of multi-species weakly-asymmetric zero-range interacting particle systems in one dimension, where mass density each species is conserved. Although such have been studied with a single species, setting much less understood. Among other results, we show that when system starts from stationary states particular property, scaling limits fields, seen characteristi...

Journal: :Science 2001
C L Van Dover S E Humphris D Fornari C M Cavanaugh R Collier S K Goffredi J Hashimoto M D Lilley A L Reysenbach T M Shank K L Von Damm A Banta R M Gallant D Gotz D Green J Hall T L Harmer L A Hurtado P Johnson Z P McKiness C Meredith E Olson I L Pan M Turnipseed Y Won C R Young R C Vrijenhoek

Within the endemic invertebrate faunas of hydrothermal vents, five biogeographic provinces are recognized. Invertebrates at two Indian Ocean vent fields (Kairei and Edmond) belong to a sixth province, despite ecological settings and invertebrate-bacterial symbioses similar to those of both western Pacific and Atlantic vents. Most organisms found at these Indian Ocean vent fields have evolutiona...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2009
M Castro A Hernández-Machado R Cuerno

We formulate a phase-field description of step dynamics on vicinal surfaces that makes use of a single dynamical field, at variance with previous analogous works in which two coupled fields are employed, namely, a phase-field proper plus the physical adatom concentration. Within an asymptotic sharp interface limit, our formulation is shown to retrieve the standard Burton-Cabrera-Frank model in ...

2001
A. V. Smilga

We study the structure of the tenacious (existing for all values of masses of the matter fields) BPS domain walls interpolating between different chirally asymmetric vacua in supersymmetric QCD in the limit of large masses. We show that the wall consists in this case of three layers: two outer layers form a “coat” with the characteristic size ∼ Λ SYM and there is also the core with width ∼ m−1....

Journal: :Physical review letters 2005
P Blomqvist Kannan M Krishnan H Ohldag

X-ray photoemission electron microscopy is used to probe the remnant magnetic domain structure in high quality, single-crystalline, exchange-biased Fe/MnPd bilayers. It is found that the induced unidirectional anisotropy strongly affects the overall magnetic domain structure. Real space images of the ferromagnetic domains provide direct evidence for an asymmetric magnetization reversal process ...

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