نتایج جستجو برای: dust acoustic wave

تعداد نتایج: 330408  

2013
Abdulwaheed Musa S. O. Bashir

Department of Electrical and Computer Engineering, Faculty of Engineering, International Islamic University Malaysia. Corresponding Author: Abdulwaheed Musa ___________________________________________________________________________ Abstract The effects of dust storms on propagation of electromagnetic wave at millimeter wave band are investigated. The propagation at millimeter wave band is affe...

Journal: :Physical Review 1922

Underwater acoustics is widely used in many applications, such as oceanography, marine biology, hydrography, fishery, etc. Different models are introduced to simulate the underwater acoustic propagation in the oceans and the seas. In this study, the Ray Theory model is used to simulate the acoustic wave propagation in a shallow-freshwater river (Gono River) located in western part of Japan. The...

Journal: :Nature communications 2014
Yangbo Xie Wenqi Wang Huanyang Chen Adam Konneker Bogdan-Ioan Popa Steven A Cummer

Metasurfaces are a family of novel wavefront-shaping devices with planar profile and subwavelength thickness. Acoustic metasurfaces with ultralow profile yet extraordinary wave manipulating properties would be highly desirable for improving the performance of many acoustic wave-based applications. However, designing acoustic metasurfaces with similar functionality to their electromagnetic count...

2002
A. V. Fedorov N. N. Fedorova

The dust explosion prevention in mines and dusted industries has been an important issue for years. During this time, many experimental and theoretical investigations have been carried out. Nevertheless, up to now nobody can declare that all the mechanisms are clear and the comprehensive mathematical model is constructed taking into account all the details of this complicated process. The gas-d...

ژورنال: پوست و زیبایی 2013
رجبی استرآبادی, علی , زرتاب, حامد , فانیان, فریال , فیروز, علیرضا , وریجی, زینب ,

There are different ways to treat local obesity and cellulite including invasive and noninvasive methods. Due to the fact that noninvasive methods have significantly lower rates of adverse effects, they become more popular. One of these methods is acoustic wave therapy (AWT) or shock wave therapy (SWT). In addition to treating cellulite, SWT has been found useful for some other conditions. In t...

2014
Abdulwaheed Musa Saad O. Bashir Aisha H. Abdalla

Electromagnetic wave propagation in arid and semi-arid regions is influenced by sand and dust storms. Meagre information has hitherto been reported as to the effect of storms on telecommunication systems operating in such regions. This paper presents a survey of current understanding of the wave propagation during storms. In this first part of the review—Part I, detailed parametric assessment o...

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