نتایج جستجو برای: waves

تعداد نتایج: 113311  

M Kaur, R Kumar, S.C Rajvanshi

The present investigation is concerned with the reflection and transmission coefficients of plane waves at the interface of generalized thermoelastic solid half space and heat conducting micropolar fluid half- space. The amplitude ratios of various reflected and transmitted waves with various angle of incidence have been computed numerically and depicted graphically. Micropolarity and thermal r...

Introduction: Today concerns about the somatic and mental-emotional effects of exposure to electromagnetic waves have been raised. Although early thermal effects can not be attributed to these waves, It is necessary to investigate the long-term and side effects of these waves. One of the devices that has the most connection with electromagnetic waves is cell phones. In the pres...

A Mandi, P Chandra Pal P Pati S Kundu

In this work, attempts are made to study the dispersion of Love waves in dry sandy layer sandwiched between fiber reinforced layer and inhomogeneous half space.Inhomogeneity in half space associated with density and rigidity and considered in exponential form. Displacement components for fiber reinforced layer, dry sandy layer and inhomogeneous half-space have been obtained by using method of s...

P Sharma R Kumar,

In this paper the propagation of harmonic plane waves in a homogeneous anisotropic magneto-piezothermoelastic diffusive body with fractional order derivative is studied. The governing equations for a homogeneous transversely isotropic body in the context of the theory of thermoelasticity with diffusion given by Sherief et al. [1] are considered as a special case. It is found that three types of...

ژورنال: مهندسی دریا 2009
نقی پور, مرتضی, ولی نتاج, مسعود, کتابداری, محمدجواد,

Waves exert one of the most important forces on offshore and coastal structures as well as floating vessels. However, due to the random nature of waves, estimation of their hydrodynamic forces on marine structures is very complicated. Morison's semi-empirical model, is one of the models capable of estimating wave forces on slender cylindrical elements of marine structures. In this research usin...

Babak Banijamali, Mahmood Reza Akbarpour Jannat, Omid Reza Safiyari,

Investigation of the waves generated by underwater disturbances gives precious insight into the effect of man-made underwater explosions as well as natural phenomena, such as underwater volcanoes or oceanic meteor impact. On the other hand, prediction of the effects of such waves on the coastal installations and structures is required for preparation worthwhile criteria for coastal engineers to...

One of the new methods for powering low-power electronic devices employed in the sea, is using of mechanical energies of sea waves. In this method, piezoelectric material is employed to convert the mechanical energy of sea waves into electrical energy. The advantage of this method is based on not implementing the battery charging system. Although, many studies have been done about energy harves...

قادری پاکدل , فیروز, حسین پور, مینا , شهابی, پرویز, صدیقی الوندی, مینا , غمخواری‌نژاد, غزاله ,

Background & Aims: The changes of brain waves eventually sub-bands power incidence in the form of clinical protests. Regarding the use of multi-walled carbon nanotubes in neuroscience, the alpha/ theta power ratio is a reliable scale to measure the disorders associated with learning. The present study aimed to examine the effect of this substance examined on brain waves and investigated its...

S Karmakar S.A Sahu,

A Mathematical model has been considered to study the reflection and refraction phenomenon of plane wave at the interface of an isotropic liquid medium and a triclinic (anisotropic) half-space. The incident plane qP wave generates three types of reflected waves namely quasi-P (qP), quasi-SV (qSV) and quasi-SH (qSH) waves in the tric...

2010
C. Y. Seo M. Takahashi

This paper estimates separately the components of scattering waves generated in cylinder-body model for body area networks. For the evaluation, scattering field formulations in relation to uniform cylinderand slab-body models are provided, and the reliability of the analyses is testified by the comparison with results computed by the finite-difference time-domain (FDTD) method. Creeping waves, ...

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