Results 21 to 30 of about 2,258,641 (273)
A simple analytical expression has been derived to calculate the characteristics of a wave that reflects at a stent implanted in a uniform vessel. The stent is characterized by its length and the wave velocity in the stented region. The reflected wave is proportional to the time derivative of the incident wave.
Crespo Martínez, Antonio +2 more
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Introduction The concept of re-reflections of blood pressure waves at the heart has been neglected in most models and is only poorly understood so far.
Bernhard Hametner +2 more
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Wave reflection in semiconductor nanostructures
: Based on nonlocal thermoelastic theory, this article studies the reflection of waves in nanometer semi-conductor media. Firstly, the governing equations are established based on coupled nonlocal elasticity theory, plasma diffusion equation, and moving ...
Feixiang Tang, Yaqin Song
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An Image Processing Method for Extraction of the Stress Wave Reflection Period
The stress wave reflection method is widely used in the detection of structure size and integrity due to its advantages of low environmental impact and convenience.
Panpan Gong +4 more
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Strong shock waves can be generated by pulse discharge in water, and the characteristics due to the shock wave normal reflection from rigid walls have important significance to many fields, such as industrial production and defense construction.
Dong Yan, Jinchang Zhao, Shaoqing Niu
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Reflected waves and quantum gravity
In the context of canonical quantum gravity, we consider the effects of a non-standard expression for the gravitational wave function on the evolution of inflationary perturbations. Such an expression and its effects may be generated by a sudden variation in the (nearly constant) inflaton potential.
Leonardo Chataignier +3 more
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A ferrofluid layer separates into numerous subscale crests, which is referred to as Rosensweig instability, whose shape and size depend on the field condition and the composition of the ferrofluid. A ferrofluid consisting of nanoscale magnetite particles
Yan-Hom Li, Kuo-Lung Huang
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ObjectivesAugmentation index (AIx) is widely used as a measure of wave reflection. We compared the relationship between AIx and age, height and sex with 'gold standard' measures of wave reflection derived from measurements of pressure and flow to ...
Alun D Hughes +6 more
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Physical Experimental Study on the Wave Reflection and Run-Up of a New Ecological Hollow Cube
Implementing quadrangular hollow blocks on breakwaters is a common method for wave mitigation and ocean disaster prevention. In order to improve the wave-damping performance of conventional quadrangular hollow blocks, a new quadrangular hollow block is ...
Haitao Zhao +7 more
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3D simulation of stress wave propagation in jointed rock mass with filling joint
In order to study the propagation characteristics of stress wave in rock mass with filling joints, the Three- Dimension Distinct Element Code was used to explore the influence of different occurrence joints on the penetration and reflection rules of P ...
DING Yingxun +2 more
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