967 research outputs found
Resin composition
The invention relates to an incombustible resin composition produced by blending a compound with a specific ester bond and imide bond in a combustible resin
Fast transform decoding of nonsystematic Reed-Solomon codes
A Reed-Solomon (RS) code is considered to be a special case of a redundant residue polynomial (RRP) code, and a fast transform decoding algorithm to correct both errors and erasures is presented. This decoding scheme is an improvement of the decoding algorithm for the RRP code suggested by Shiozaki and Nishida, and can be realized readily on very large scale integration chips
Ferroelectricity in the Dion-Jacobson CsBiNbO from first principles
We have studied ferroelectricity in Dion-Jacobson CsBiNbO from first
principles. Using group-theoretical analysis and first-principles density
functional calculations of the total energy and phonons, we perform a
systematic study of the energy surface around a paraelectric prototypic phase.
Our results suggest that CsBiNbO is a ferroelectric with a polarization
of P=40C cm. We propose further experiments to clarify this
point
Out-of-phase oscillation between superfluid and thermal components for a trapped Bose condensate under oscillatory excitation
The vortex nucleation and the emergence of quantum turbulence induced by
oscillating magnetic fields, introduced by Henn E A L, et al. 2009 (Phys. Rev.
A 79, 043619) and Henn E A L, et al. 2009 (Phys. Rev. Lett. 103, 045301), left
a few open questions concerning the basic mechanisms causing those interesting
phenomena. Here, we report the experimental observation of the slosh dynamics
of a magnetically trapped Rb Bose-Einstein condensate (BEC) under the
influence of a time-varying magnetic field. We observed a clear relative
displacement in between the condensed and the thermal fraction center-of-mass.
We have identified this relative counter move as an out-of-phase oscillation
mode, which is able to produce ripples on the condensed/thermal fractions
interface. The out-of-phase mode can be included as a possible mechanism
involved in the vortex nucleation and further evolution when excited by time
dependent magnetic fields.Comment: 5 pages, 5 figures, 25 reference
Green leaf volatiles affect the resveratrol production stimulated by ultraviolet C irradiation in grape leaf discs
The effect of green leaf volatiles (GLVs; cis-3-hexenol and trans-2-hexenal) on the resveratrol production stimulated and nonstimulated by ultraviolet C (UV-C) irradiation was elucidated in the leaf discs of ‘Delaware’ grapes. Each GLV treatment slightly reduced resveratrol levels in the leaf discs. Pretreatment with cis-3-hexenol inhibited the resveratrol accumulation stimulated by UV-C irradiation irrespective of the concentration. On the other hand, pretreatment with trans-2-hexenal at low concentration augmented the levels of resveratrol increased by UV-C irradiation. These results suggest that trans-2-hexenal had a priming effect on the resveratrol accumulation stimulated by UV-C irradiation in grape leaf discs. The highest priming effect of trans-2-hexenal was found at 2.58 μM for 24 h exposure. Exposure times, from 2 to 24 h, of 4.3 μM trans-2-hexenal did not change the priming effect.
Photoassociative ionization of Na inside a storage ring
Motivated by recent interest in low dimensional arrays of atoms, we
experimentally investigated the way cold collisional processes are affected by
the geometry of the considered atomic sample. More specifically, we studied the
case of photoassociative ionization (PAI) both in a storage ring where
collision is more unidirectional in character and in a trap with clear
undefinition of collision axis. First, creating a ring shaped trap (atomotron)
we investigated two-color PAI dependence with intensity and polarization of a
probing laser. The intensity dependence of the PAI rate was also measured in a
magneto-optical trap presenting equivalent temperature and density conditions.
Indeed, the results show that in the ring trap, the value of the PAI rate
constant is much lower and does not show evidences of saturation, unlike in the
case of the 3D-MOT. Cold atomic collisions in storage ring may represent new
possibilities for study.Comment: 5 pages, 5 figures; Accepted by Optics Communicatio
Distribution of Connectin (Titin) and Transverse Tubules at Myotendinous Junctions
The ends of muscle fibers form many longitudinal projections which are further divided into numerous processes and attach to the collagen fibrils of tendons to form myotendinous junctions (MTJs). Immunocytochemical and electron microscopic observations on pectoralis muscles of the chicken revealed the presence of an elastic filamentous protein, connectin (titin), within the terminal sarcomere on the side adjacent to the terminal Z bands, and the absence of connectin and myosin and the presence of actin at the apical sarcoplasmic region of MTJ processes between the terminal Z band and the MTJ sarcolemma. Intermediate voltage electron microscopy showed that T tubules in the terminal sarcomere were absent at the level of the A-I junction on the MTJ side in the rat vastus intermedius, and at the level of the terminal Z band or under the MTJ subsarcolemmal densities in the chicken pectoralis
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