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The Lingding channel appears as a quasi-linear dark-bright feature in a TerraSARX synthetic aperture radar (SAR) image acquired in the area of Pearl River Estuary (PRE), China on October 25, 2010. The tidal current in this area is almost parallel to the major axis of the Lingding channel. In this paper, researches on the SAR remote sensing imaging conditions of channel topography have been carried...
Blade which is one of the most important thin-walled parts is widely used in aviation, aerospace and automotive fields. At present, the manufacturing technology of blade has been developed towards a new direction of high efficiency, precision and multi-process composition. However, the production efficiency and machining precision of blade are greatly limited due to the elastic, residual stress deformation...
In hard disk drives (HDDs), the head-disk spacing needs to be reduced to less than 2 nm to achieve a target recording density of 4 Tbit/in2 [1]. At such a small spacing, liquid perfluoropolyether (PFPE) lubricant films coated on disk surfaces are more frequently subjected to shear confined between the head and the disk. Therefore, a detailed understanding of the shear phenomenon is essential for improving...
The study of growth model is a basic research in forest growth and yield modeling. Most of growth models were developed using ordinary regression method. It is assumed that the observations were independent and obey Gauss distribution. Those models reflect the average growth across different plots, but neglect the correlation and variance between individuals and plots. However, mixed-effects models...
The ultra rapid potassium current (IKur) is an attractive pharmacological target in atrial fibrillation (AF) management due to its atrial specific nature. An experimentally based 78% IKur reduction was incorporated into a human atrial action potential (AP) model under sinus rhythm (SR) and atrial fibrillation (AF) conditions. Its effects on cell and tissue level electrical activity were simulated...
This paper describes an automated in-vehicle field measurement systems that can be used to acquire 3D electric field distribution generated from wireless antenna sources placed within a passenger vehicle. One prototype is made out of metal and another Delrin. Comparisons between simulated and measured 2D field distribution within a simple cavity correlate well at 870 MHz. Measurements made within...
Slow conduction through the Purkinje-ventricular junction (PVJ) is thought to result in conduction block and ultimately re-entry under certain pathological conditions. The relationships between tissue structure, conduction velocity and the safety of conduction at such junctions however, are unknown. We developed an electrophysiologically detailed 3D model of the PVJ and varied the Purkinje fibre thickness...
We computationally evaluated the functional roles of atrial fibrillation induced electrical remodelling (AFER) on human atrial electrical excitations at cellular, tissue and whole organ levels. Our results show that AFER produced a dramatic reduction in action potential duration, slowing down of intra-atrial conduction, decrease in tissuepsilas temporal vulnerability, but remarkable increase in tissuepsilas...
We have developed a three-dimensional computational wedge model of canine cardiac ventricular wall electro-physiology that incorporates biophysically detailed, spatially heterogeneous excitation, and high-resolution geometry and fibre orientation. Isolated cell model electrophysiological characteristics reproduce the experimentally observed characteristics under control conditions, and under conditions...
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