In this study, Cu50-Ni50 alloy were synthesized by mechanical alloying. The alloy was then reinforced by dispersion of multiwalled carbon nanotubes using a planetary high energy ball mill. X-ray diffraction, scanning electron microscopy and vibrating sample magnetometer were used to evaluate the effects of CNT addition on the characteristics of the nanocomposites. XRD results of Cu-Ni sample sh...

The stress wave propagation in a generalized thermoelastic polygonal plate of inner and outer cross sections is studied using the Fourier expansion collocation method. The wave equation of motion based on two-dimensional theory of elasticity is applied under the plane strain assumption of generalized thermoelastic plate of polygonal shape, composed of homogeneous isotropic material.  The freque...

This paper presents the influence of Hybrane H 1500 as a hyperbranched polymer on kinetic parameters of dyeing compounded fiber grade PET polyethylene terephthalate at boil temperature. C.I. Disperse Red 324 as a disperse dye was used for dyeing compounded fiber grade PET. The result was compared with corresponding properties of virgin PET. The dyeing rate constants and diffusion coefficients a...

We present a new technique for choosing spatial regions for X-ray spectroscopy, called " contour binning ". The method chooses regions by following contours on a smoothed image of the object. In addition we re-explore a simple method for adaptively smoothing X-ray images according to the local count rate, we term " accumulative smoothing " , which is a generalisation of the method used by FADAP...

Recently, combining radial velocities from Keck/HIRESéchelle spectra with published proper motion membership probabilities, Côté et al. (2002) observed a sample of 21 stars, probable members of Palomar 13, a globular cluster in the Galactic halo. Their projected velocity dispersion σp = 2.2 ± 0.4 km s −1 gives a mass-to-light ratio M/LV = 40 +24 −17 , about one order of magnitude larger than th...

The dispersion relation of plasma and plasma-dielectric photonic multilayer structures is approached in terms of a one-dimensional Particle-in-Cell simulation. It is first shown that the dispersion relation of a homogeneous plasma slab is well described by the cold-plasma model even at low pressures of 1 Pa. The study is extended to the simulation of plasma photonic crystals with a variety of c...

In this work, the problem of Rayleigh wave propagation is considered in the context of the theory of thermoelastic diffusion. The formulation is applied to a homogeneous isotropic thermoelastic half space with mass diffusion at the stress free, isothermal, isoconcentrated boundary. Using the potential functions and harmonic wave solution, three coupled dilatational waves and a shear wave is obt...

Submitted for the DFD10 Meeting of The American Physical Society Effect of inter-particle collision in particle-laden homogeneous isotropic turbulence OHJOON KWON, CHANGHOON LEE, Yonsei University — It has been known that Inter-particle collision of small spherical particles in particle laden homogeneous isotropic turbulence modifies the statistical characteristics of particle behaviour. For ex...

Thin and ultrathin films of polyethylene of variable thickness are obtained from aqueous dispersions of prefabricated nanoscale crystals by spin-coating. Continuous films with a thickness of only 15 nm, up to 220 rim, homogeneous over hundreds of pm, or assembled discontinuous monolayers of flat-on lamella particles were prepared, depending on the solids content of the dispersion employed, as r...

Despite recent exciting progress in catalysis by supported gold nanoparticles, there remains the formidable challenge of preparing supported gold catalysts that collectively incorporate precise control over factors such as size and size-distribution of the gold nanoparticles, homogeneous dispersion of the particles on the support, and the ability to utilize a wide range of supports that profoun...