Results 321 to 330 of about 6,854,353 (384)
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Electronic and vibronic optical excitations of a quarter-filled periodic octamer
Synthetic Metals, 1997Linear optical conductivity spectra of 1-D quarter-filled charge transfer crystals are interpreted on the basis of a periodic octamer and a Holstein-Hubbard model. It is shown how the low frequency spectral features are due to combined effects of electron correlations and of the dimerization of the system.
Luigino Feltre, Moreno Meneghetti
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Homoclinic connections and period doublings of a ship advancing in quartering waves
Chaos: An Interdisciplinary Journal of Nonlinear Science, 1996The large-amplitude motions of a ship running in waves are analyzed with a mathematical model reduced to a system of eight coupled nonlinear ordinary differential equations. Bifurcation analysis in relation to the surf-riding condition, with control parameter the angle of the rudder, shows the existence of a region of oscillatory behavior, containing ...
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Nonlinear dynamic analysis of a quarter vehicle system with external periodic excitation
International Journal of Non-Linear Mechanics, 2016Abstract In this paper, a nonlinear dynamic model of a quarter vehicle with nonlinear spring and damping is established. The dynamic characteristics of the vehicle system with external periodic excitation are theoretically investigated by the incremental harmonic balance method and Newmark method, and the accuracy of the incremental harmonic balance ...
Guiqiu Song +3 more
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Periodic paralysis in Quarter Horses: a sodium channel mutation disseminated by selective breeding
Nature Genetics, 1992We recently reported on a linkage study within a Quarter Horse lineage segregating hyperkalaemic periodic paralysis (HYPP), an autosomal dominant condition showing potassium-induced attacks of skeletal muscle paralysis. HYPP co-segregated with the equine adult skeletal muscle sodium channel alpha subunit gene, the same gene that causes human HYPP.
Sharon J. Spier +5 more
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Contrast enhanced quarter-Talbot images.
Journal of The Optical Society of America A-optics Image Science and Vision, 2017In this paper a rigorous mathematical approach to the near-field diffraction of 1D periodic structures at quarter-Talbot distances is presented. At the beginning of the paper, we present a mathematical investigation on the behavior of periodic functions ...
S. Rasouli, Davud Hebri
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Animal Genetics, 1996
SummaryThe pedigree origin of a base pair substitution in the horse muscle sodium channel gene that confers susceptibility to the muscle disease hyperkalemic periodic paralysis (HYPP) was investigated with a set of 978 Quarter Horses. The horses were chosen at random, based on a collection of blood samples taken between 1989 and 1991 to meet parentage ...
Sharon J. Spier +2 more
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SummaryThe pedigree origin of a base pair substitution in the horse muscle sodium channel gene that confers susceptibility to the muscle disease hyperkalemic periodic paralysis (HYPP) was investigated with a set of 978 Quarter Horses. The horses were chosen at random, based on a collection of blood samples taken between 1989 and 1991 to meet parentage ...
Sharon J. Spier +2 more
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HOW PUBLIC SERVICE LEADERSHIP IS STUDIED: AN EXAMINATION OF A QUARTER CENTURY OF SCHOLARSHIP
, 2016This exploratory study surveys the public service leadership literature from a selection of leading public administration journals over a 25-year period (1987–2012).
Carrie Chapman +5 more
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Caudal lumbar vertebral fractures in California Quarter Horse and Thoroughbred racehorses.
Equine Veterinary Journal, 2015REASONS FOR PERFORMING STUDY To gain insight into the pathophysiology of equine lumbar vertebral fractures in racehorses. OBJECTIVES To characterise equine lumbar vertebral fractures in California racehorses.
E. Collar +6 more
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High Directivity Quarter-Wave Microstrip Couplers with Periodic Floating-Conductors on Coupled Edges
2006 European Microwave Conference, 2006This paper presents a new quarter-wavelength microstrip coupler with high directivity, which consists of a periodic sequence of floating metal strips in the slots on the inner edges. After describing the characteristics of the coupled-line, a 15-dB coupler is designed and a high directivity of 30 dB or more in theory is obtained over a considerably ...
Y. Kokubo, Isao Ohta, T. Fujii
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IEEE Photonics Technology Letters, 1999
Degradation in wavelength accuracy and single-mode stability, incurred by random fluctuation of grating period, has been studied by an effective-index transfer matrix method in quarter wavelength shifted distributed-feedback lasers. The laser facets are assumed to be perfectly antireflection coated, and the period fluctuation is modeled as a Gaussian ...
Jae-Woong Han, Sang-Bae Kim, Jung-Ho Cha
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Degradation in wavelength accuracy and single-mode stability, incurred by random fluctuation of grating period, has been studied by an effective-index transfer matrix method in quarter wavelength shifted distributed-feedback lasers. The laser facets are assumed to be perfectly antireflection coated, and the period fluctuation is modeled as a Gaussian ...
Jae-Woong Han, Sang-Bae Kim, Jung-Ho Cha
openaire +2 more sources