electro-thermo-elastic stress analysis of piezoelectric polymeric thick-walled cylinder reinforced by boronnitride nanotubes (bnnts) subjected to electro-thermo-mechanical fields is presented in this article. the electro-thermo-elastic properties of piezoelectric fiber reinforced composite (pefrc) was studied by a modified xy micromechanical model capable of exhibiting full coupling relation be...

Abstract In this paper, we extend our previous study on the Lemaitre–Tolman (LT) model showing how prediction of changes when equation state (EoS) parameter ( w ) dark energy (DE) is modified. study, it was considered that DE merely constituted by cosmological constant. as in also took into account effect angular momentum and dynamical friction J η LT model) modifies evolution a perturbation, i...

Objective: It is essential to have a suitable instrument for accurate assessments of pain and disability outcomes during interventions and to guide hand surgery and rehabilitation programs in distal radius or scaphoid fracture. This study was designed to evaluate the psychometric features of the Patient-rated Wrist Evaluation (PRWE) questionnaire in Iranian persons with a history of scaphoid an...

One can solve the Jeans equation analytically for equilibrated dark matter structures, once given two pieces of input from numerical simulations. These inputs are 1) a connection between phase-space density and radius, and 2) a connection between velocity anisotropy and density slope, the α − β relation. The first (phase-space density v.s. radius) has already been analysed through several diffe...

TheHIPPARCOSsatellite hasmeasured trigonometric parallaxes for 20 white dwarfs. With the exception of one each of the spectral types DZ, DC, DB, DQ, the majority are of spectral type DA. We compare the parallaxes with the most recent ground-based determinations. Froma spectroscopic analysis of new optical observations we determine atmospheric parameters Teff and log g. From the angular diameter...

Background: Expansion of bone marrow cavity and decreased cortical and trabecular bone tissues and osteoporosis are resulted from beta-thalassemia. The aim of this study was to assess bone mineral density (BMD) in patients with β thalassemia major and intermedia, and to determine their biochemical and hormonal profiles that may affect BMD. Materials and Methods: In a cross sectional study from ...

One can solve the Jeans equation analytically for equilibrated dark matter structures, once given two pieces of input from numerical simulations. These inputs are 1) a connection between phase-space density and radius, and 2) a connection between velocity anisotropy and density slope, the α − β relation. The first (phase-space density v.s. radius) has already been analysed through several diffe...

The effects of fabricational variations on the gain spectra of quantum wires are calculated within the limits of first order perturbation theory. Gain spectra and density of states for 50 A radius and 150 A radius cylindrical quantum wires are calculated and plotted for several different fabrication tolerances. The wave functions for a finite, cylindrical potential are calculated and a quasi-cr...

The thermal structure of neutron stars with magnetized envelopes is studied using modern physics input. The relation between the internal (Tint) and local surface temperatures is calculated and fitted by analytic expressions for magnetic field strengths B from 0 to 10 G and arbitrary inclination of the field lines to the surface. The luminosity of a neutron star with dipole magnetic field is ca...

Modern instrumentation makes it possible to measure the mass to radius ratio for main sequence stars in open clusters from gravitational redshifts. For stars where independent information is available for either the mass or the radius, this application of general relativity directly determines the other quantity. Applicable examples are: 1) measuring the radii of solar metallicity main sequence...