نتایج جستجو برای: s wave

تعداد نتایج: 908613  

2000
Hiroshi Masui Shigeyoshi Aoyama Kiyoshi Katō Kiyomi Ikeda

We study the effect of s-wave cross-sections in 4He+n and 9Li+n elastic scattering reactions by using the Jost function method (JFM). In 5He (4He+n), the s-wave pole of the S-matrix does not contribute so much to the total cross-section. On the other hand, in 10Li (9Li+n), the s-wave component can not be neglected due to a relatively strong attraction for the s-waves of the core+n potential. It...

Journal: :Physical review letters 2005
H J H Smilde A A Golubov Ariando G Rijnders J M Dekkers S Harkema D H A Blank H Rogalla H Hilgenkamp

We report on an ab anisotropy of Jc parallel b/Jc parallel a approximately/= 1.8 IcRn parallelb/IcRn parallel a approximately/= 1.2 and in ramp-edge junctions between untwinned YBa2Cu3O7 and s-wave Nb. For these junctions, the angle theta with the YBa2Cu3O7 crystal b axis is varied as a single parameter. The RnA(theta) dependence presents twofold symmetry. The minima in IcRn at theta approximat...

Farrokh Hojjat Kashani Habibollah Zolfkhani Jalil Rashed Mohassel

Modern microwave and millimeter wave phased array antennas are attractive because of their ability to steer wave beams in space without physically moving the antenna element. A typical phased array antenna may have several thousand elements fed by a phase shifter for every antenna, which can steer the resulting array beam to different directions. Their low loss, low cost and lightweight phase s...

2008
J. Nieves

We evaluate the p-wave K − N amplitudes from the chiral Lagrangians and from there construct the p-wave part of the K − nucleus optical potential plus a small s-wave part induced from the elementary p-wave amplitude and the nuclear Fermi motion. Simultaneously, the momentum and energy dependence of the s-wave optical potential, previously developed, are taken into account and shown to generate ...

2015
Dan Dan Sun Chuan Ju Hou Li Jun Yuan Yun You Duan Ying Hou Fang Ping Zhou

The aim of this study was to analyze the changes of the middle hepatic vein (MHV) spectra in patients with pulmonary hypertension (PH) caused by congenital heart disease (CHD) and determine the proper parameters of MHV to predict PH. Eighty patients with CHD were included, whose pulmonary artery pressure was measured via right heart catheterization, and the MHV spectra were detected via echocar...

To understand the mechanism of superconductivity in unconventional super onductors is one of the big challenges in the field of superconductivity. Based on the BCS theory, there is a direct relation between the pairing mechanism and the symmetry of the order parameter. Therefore, identification of the structure of the superconducting gap or the order parameter provides key information on the pa...

2017
Jongwon Jung Taeseo Ku Jaehun Ahn

Sand improvements using organic agents have shown promising results. Polyacrylamide is one possible organic agent, which has been shown to influence the shear strength, stiffness, soil remediation, and erosion resistance of geomaterials. In this study, we explored the shear wave velocity (S-wave) and water retention curves of unsaturated sands containing polyacrylamide solutions. The shear wave...

2008
Masatoshi Miyazawa Roel Snieder Anupama Venkataraman

We extract downward-propagating Pand S-waves from industrial noise generated by human and/or machine activity at the surface propagating down a borehole at Cold Lake, Alberta, Canada, and measure shear-wave splitting from these data. The continuous seismic data are recorded at eight sensors along a downhole well during steam injection into a 420–470-m-deep oil reservoir. We crosscorrelate the w...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علم و صنعت ایران - دانشکده مهندسی برق 1386

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