Transmission properties through sharp rectangular waveguide bends are investigated to determine the cut-off bending angles of the wave propagation. We show that a simple metallic diaphragm at the bending corner with properly devised sub-wavelength defect apertures of C-slits would be readily to turn on the transmissions with scarce reflections of the propagating modes, while preserving the inte...

Debris formation is a crucial aspect that determines the lifespan of prosthetic joints. The wearing contact between ultra-high molecular weight polyethylene (UHMWPE) and Ti alloy surface has been studied in literature. However, when measuring mass loss, potential errors can arise due to very small values involved (on order some units 0.1 mg experiments lasting several hours) be caused by absorp...

The assembly of colloids in nematic liquid crystals via topological defects has been extensively studied for spherical particles, and investigations of other colloid shapes have revealed a wide array of new assembly behaviors. We show, using Landau-de Gennes numerical modeling, that nematic defect configurations and colloidal assembly can be strongly influenced by fine details of colloid shape,...

INTRODUCTION Presence of vermiform appendix (non-inflamed or inflamed) in inguinal hernia is called Amyand's hernia in honor to surgeon C. Amyand who published the first case of perforated appendicitis within inguinal hernia in a boy caused by ingested pin. This presentation of foreign body Amyand's hernia appendicitis is very rare, and here we present such a case. CASE PRESENTATION A 6-year-...

A design of compact ultra wideband (UWB) microstrip bandpass filter (BPF) with tunable notch response of wireless communication system is presented in this paper. The five order bandpass filter was designed using optimum distributed highpass integrated with Defected Microstrip Structure (DMS). The bandpass filter was designed at wideband frequency from 2.96 GHz to 10.1 GHz. The insertion loss a...

A continuous soft X-ray system with a semi-conductor detector was used to detect foreign materials in food samples. Basic properties of transmitted and reflected soft X-ray for some metallic and non-metallic materials were measured using the Si-PIN sensor equipped with a multi-channel analyzer. Soft X-ray spectra in photon energy were obtained for copper, galvanized iron, acrylic, vinyl chlorid...