background: the purpose of this study is to investigate the relationship between the cognitive impairment and naa/cr and cho/cr ratios in the proton magnetic resonance spectroscopy (1hmrs), and to assess the importance of 1hmrs in the early diagnosis of cognitive impairment in patients with ischemic white matter lesions (wmls). materials and methods: a total of 45 patients (23males and 22 femal...

Beam splitters are primarily used for applications like avionic displays, optical storage, fluorescence applications, interferometry, semiconductor instrumentation where some of the information needs to be reflected as well transmitted. They operate on principle light being and transmitted by various interfaces it is split percentage overall intensity or wavelength. In this study, design fabric...

A least-squares linear fixed-interval smoothing algorithm is derived to estimate signals from uncertain observations perturbed by additive white noise. It is assumed that the Bernoulli variables describing the uncertainty are only correlated at consecutive time instants. The marginal distribution of each of these variables, specified by the probability that the signal exists at each observation...

in this paper, the stability of a functionally graded magneto-electro-elastic (fg-mee) micro-beam under actuation of electrostatic pressure is studied. for this purpose euler-bernoulli beam theory and constitutive relations for magneto-electro-elastic (mee) materials have been used. we have supposed that material properties vary exponentially along the thickness direction of the micro-beam. gov...

Abstract Remote Laser Welding (RLW) of Aluminium alloys has significant importance in lightweight manufacturing to decrease the weight body white. It is critical understand physical process transport phenomena during welding which highly related mechanical performance joints. To investigate underlying physics and influence beam oscillation on heat transfer, fluid flow material mixing a transien...

Boundary migration during recrystallization in the heterogeneous microstructure near a hardness indent lightly rolled pure Al was followed 3D. The after multiple steps of ex-situ annealing examined using synchrotron white-beam differential-aperture X-ray microscopy, supplemented by scanning electron microscopy. Heterogeneous boundary observed and analyzed terms driving force characteristics. re...

We have used scanning white beam x-ray microdiffraction to study microstructural evolution during an in-situ electromigration experiment on a passivated Al(Cu) test line. The data show plastic deformation and grain rotations occurring under the influence of electromigration, seen as broadening, movement, and splitting of reflections diffracted from individual metal grains. We believe this defor...

In this paper, the Lyapunov exponent and moment exponents of two degrees-of-freedom linear systems subjected to white noise parametric excitation are investigated. The method regular perturbation is used determine explicit asymptotic expressions for these in presence small intensity noises. important characteristics determining both almost-sure stability a stochastic dynamic system. As an examp...

Foot pathology is a common and important health concern in captive rhinoceroses worldwide, but osteopathologies are rarely diagnosed, partly because of a lack of radiographic protocols. Here, we aimed to develop the first radiographic protocol for rhinoceros feet and describe the radiographic anatomy of the white rhinoceros (Ceratotherium simum) hind foot (pes). Computed tomographic images were...

recently, a large amount of studies have been related to nonlinear systems with multi-degrees of freedom as well as continuous systems. the purpose of this paper is to optimize passive vibration absorbers in linear and nonlinear states for an euler-bernoulli beam with a nonlinear vibratory behavior under concentrated moving load. the goal parameter in the optimization is maximum deflection of t...