IR this paper the high energy expansion introduced in our previous paper is i used to describe to the problem of beamstrahlung due to an extended pulse with an elliptical cross section of arbitrary eccentricity. We show that the transverse . geometry of the pulse enters in a remarkably simple scaling manner. This case _ is of interest because the radiative energy loss can be markedly reduced wh...

This paper presents the design equations for lower band-edge frequency for all the regular shapes of printed monopole antennas with various feed positions. The length of the feed transmission line is a critical design parameter of these monopole antennas. Design curves for the length of the feed transmission line for various lower band-edge frequencies for all these regular shaped monopoles hav...

OBJECTIVE To describe the sonographic appearances of cysticercosis. METHODS Sonography was performed with both convex and linear array transducers in 4 patients with different symptoms. RESULTS In 2 patients, an intramuscular fluid collection was seen with a cysticercus cyst in it. In 1 patient, an irregular cyst with a small fluid collection on 1 side was seen. In the last patient, multipl...

Exciton-polariton condensation can be regarded as a self-organization phenomenon, where phase ordering is established among particles in the system. In such condensed systems, further ordering can occur in the particle density distribution, under particular experimental conditions. In this work we report on spontaneous pattern formation in a polariton condensate under nonresonant optical pumpin...

The use of an optical-fibre polarimeter as a chemical sensor is demonstrated. The compound to be detected is allowed to adsorb onto a decladded 5 cm length of the fibre. The fibre is polarization maintaining with an elliptical fibre core and a D-shaped geometry. The overall retardation stability of this fibre polarimeter is x0.5 x 2x rad m-’ K-‘. With this sensor adsorption processes of protein...

We report on experimental observations of chaotic and regular motion of ultracold atoms confined by a billiard-shaped optical dipole potential induced by a rapidly scanning laser beam. To investigate the dynamics of the atoms confined by such an "atom-optics" billiard we measure the decay of the number of trapped atoms through a hole on the boundary. A fast and purely exponential decay, the cle...

The segmentation performance of any clustering algorithm is very sensitive to the features in an image, which ultimately restricts their generalisation capability. This limitation was the primary motivation in our investigation into using shape information to improve the generality of these algorithms. Fuzzy shape-based clustering techniques already consider ring and elliptical profiles in segm...

Abstract In this work, we investigate the epitaxial growth of InAs quantum dots (QDs) on Ge substrates. By varying parameters temperature, deposition thickness and rate InAs, high density (1.2 × 10 11 cm −2 ) self-assembled QDs were successfully epitaxially grown substrates by solid-source molecular beam epitaxy capped layers. Pyramid- polyhedral-shaped embedded in matrices revealed, which are ...

Augmentation of the SUPS formulation was introduced earlier and successfully applied to solving incompressible NavierStokes equations for both two dimensional and three dimensional problems. Fictitious boundary methods (FBM) is a new methodology that aid the study of flow descriptions around solid obstacles on fixed Cartesian product grids that do not require body confirming meshes. FBM has bee...

The generation of arbitrarily shaped nonspherical laser-induced cavitation bubbles is demonstrated with a optical technique. The nonspherical bubbles are formed using laser intensity patterns shaped by a spatial light modulator using linear absorption inside a liquid gap with a thickness of 40 microm. In particular we demonstrate the dynamics of elliptic, toroidal, square, and V-shaped bubbles....