Results 71 to 80 of about 5,400,490 (233)

Observation of a two-dimensional Fermi gas of atoms

open access: yes, 2010
We have prepared a degenerate gas of fermionic atoms which move in two dimensions while the motion in the third dimension is "frozen" by tight confinement and low temperature.
Makhalov, Vasiliy   +2 more
core   +1 more source

Hydrodynamic nucleation of vortices and solitons in a resonantly excited polariton superfluid [PDF]

open access: yes, 2010
We present a theoretical study of the hydrodynamic properties of a quantum gas of exciton-polaritons in a semiconductor microcavity under a resonant laser excitation.
Carusotto, Iacopo   +2 more
core   +5 more sources

Compton Profiles for Atoms and Molecules: Compton Defects [PDF]

open access: yesZeitschrift für Naturforschung A, 1993
Abstract A series expansion applied to the Born propagator present in the differential cross-section allows one to obtain successive corrections to the impulse approximation. The first and second corrections explain the essential features of the Compton defects.
F. Gasser, M. Roeth
openaire   +1 more source

Complete Delocalization in a Defective Periodic Structure [PDF]

open access: yes, 2017
We report on the existence of stable, completely delocalized response regimes in a nonlinear defective periodic structure. In this state of complete delocalization, despite the presence of the defect, the system exhibits in-phase oscillation of all units
Daraio, Chiara, Yousefzadeh, Behrooz
core   +3 more sources

Pathophysiological Defects and Transcriptional Profiling in the RBM20-/- Rat Model

open access: yesPLoS ONE, 2013
Our recent study indicated that RNA binding motif 20 (Rbm20) alters splicing of titin and other genes. The current goals were to understand how the Rbm20(-/-) rat is related to physiological, structural, and molecular changes leading to heart failure. We quantitatively and qualitatively compared the expression of titin isoforms between Rbm20(-/-) and ...
Wei Guo   +3 more
openaire   +4 more sources

Diagnostics of Internal Defects in Composite Overhead Insulators Using an Optic E-Field Sensor

open access: yesSensors
Composite insulators for high-voltage overhead lines have better performances and are lighter than traditional designs, especially in heavily polluted areas.
Damiano Fasani   +7 more
doaj   +1 more source

Railway Subgrade Defect Automatic Recognition Method Based on Improved Faster R-CNN

open access: yesScientific Programming, 2018
Railway subgrade defect is the serious threat to train safety. Vehicle-borne GPR method has become the main railway subgrade detection technology with its advantages of rapidness and nondestructiveness.
Xinjun Xu, Yang Lei, Feng Yang
semanticscholar   +1 more source

6d surface defects from massive type IIA

open access: yesJournal of High Energy Physics, 2018
We present a new BPS flow within minimal N=1 $$ \mathcal{N}=1 $$ supergravity in seven dimensions describing a warped AdS3 background supported by a “dyonic” profile of the three-form.
Giuseppe Dibitetto, Nicolò Petri
doaj   +1 more source

Propagation of time-truncated Airy-type pulses in media with quadratic and cubic dispersion

open access: yes, 2015
In this paper, we describe analytically the propagation of Airy-type pulses truncated by a finite-time aperture when second and third order dispersion effects are considered.
Besieris, Ioannis M.   +3 more
core   +1 more source

Depth Profiling of Defects in He Implanted SiO2

open access: yesActa Physica Polonica A, 2008
Thin layer of SiO2 thermally grown on p-type Si was implanted with He ions at 30 keV with a dose of 5× 10 ions/cm. SiO2/Si samples were depth profiled by Doppler broadening positron annihilation spectroscopy to identify induced defects in the silicon oxide, at the interface and in the Si substrate. In one sample the silicon dioxide layer was removed by
Mariazzi, Sebastiano   +5 more
openaire   +3 more sources

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