نتایج جستجو برای: dispersion wave

تعداد نتایج: 273423  

In this study, waves instability in free electron laser with background plasma, under the influence of self-electric and self-magnetic fields, are analyzed. A dispersion relation in the Raman regime for free electron laser with a helical wiggler magnetic field and an axial magnetic field derived in which all possible wave modes can have unstable couplings with each other. This dispersion relati...

2010
G. T. Caneba C. Dutta V. Agrawal M. Rao

A double ultrasonic source has been shown to dramatically increase dispersion efficiency of carbon nanotubes. Thermal measurements of dispersing fluid only show temperature rises commensurate with the power levels of the two ultrasonic sources; which is validated by predictions of statistical energy analysis (SEA) based on wave superposition principles. In this paper, nonlinear wave resonance c...

2004
A. Pradhan S. K. Samal N. C. Mahanti

Dispersion of Love waves is studied in a self-reinforced layer lying over an elastic non-homogeneous half space. The wave velocity equation is found to be in perfect agreement with the corresponding classical result when the anisotropic elastic parameters tend to zero. Dispersion curves for the shear wave velocity ratio and the effect of anisotropy and heterogeneity have been shown graphically....

In this paper, the collisional filamentation instability of an electron beam-weakly magnetized and ionized plasma has been investigated in the presence of background plasma, using the fluid description. By describing the equilibrium configuration in the presence of binary collision terms between charged and neutral particles and using the local approximation method, the dispersion relation (DR)...

Journal: :Cardiovascular research 1996
P F Kirchhof C L Fabritz M Zabel M R Franz

INTRODUCTION The induction of ventricular fibrillation (VF) by T-wave shocks has been related to dispersion of repolarisation, but only indirect evidence of this hypothesis exists. The effects of drugs prolonging repolarisation like d-sotalol on the vulnerability to T-wave shocks remain unknown. METHODS In 9 isolated rabbit heart, 7 monophasic action potentials (MAPs) and an ECG were recorded...

Journal: :American journal of physiology. Heart and circulatory physiology 2013
Marmar Vaseghi Kentaro Yamakawa Arjun Sinha Eileen L So Wei Zhou Olujimi A Ajijola Robert L Lux Michael Laks Kalyanam Shivkumar Aman Mahajan

Left stellate or right stellate ganglion stimulation (LGSG or RSGS, respectively) is associated with ventricular tachyarrhythmias; however, the electrophysiological mechanisms remain unclear. We assessed 1) regional dispersion of myocardial repolarization during RSGS and LSGS and 2) regional electrophysiological mechanisms underlying T-wave changes, including T-peak to T-end (Tp-e) interval, wh...

Journal: :Circulation journal : official journal of the Japanese Circulation Society 2013
Yen-Wen Wu Chii-Ming Lee Yen-Bin Liu Shoei-Shen Wang Hui-Chun Huang Wei-Kung Tseng Hsiang-Yiang Jui Shan-Ying Wang Herng-Er Horng Hong-Chang Yang Chau-Chung Wu

BACKGROUND Electrophysiological information as well as anatomic information are important for the detection of coronary artery lesions. The aim of this study was to assess the efficacy of resting magnetocardiography (MCG) in stable coronary artery disease (CAD) and cardiac allograft vasculopathy (CAV). METHODS AND RESULTS MCG and coronary angiography were performed within 1 month in 75 patien...

Journal: :Ultrasound in Medicine & Biology 2012

Journal: :ACM Transactions on Graphics 2016

Journal: :Physical Review Letters 2000

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