Sonic crystals consisting of three-dimensional arrays of units which exhibit localized resonances have been discovered recently. Here, it is shown that their two-dimensional counterparts behave in a similar manner. Particularly, it is observed that the transmittance spectra show very asymmetric peaks which are explained as a Fano-like interference phenomenon. A finite difference time domain met...

In an attempt to facilitate the processing of meat which is a daily nutritional food requirement of man, a meat slicing machine has been developed. The machine consists of a cutting blade, a meat feeder, a meat tray, a meat clamp, the crank mechanism and a control unit. The machine was designed to enhance the hygienic slicing of meat for both domestic and commercial consumption and it can accom...

Bleeding from oesophageal varices is the commonest cause of significant upper gastrointestinal bleeding in Sri Lanka. Endoscopic band ligation is an effective method in the management of varices. But the cost of banding equipment is high, unaffordable for a majority of our patients. We have devised a cheap method to carry out banding of varices. Banding of varices using this technique was carri...

Megan Gaffney is Coordinator, Interlibrary Loan and Document Delivery Services, at the University of Delaware Library; e-mail: [email protected]. © Megan Gaffney Several studies have researched the reasons and patterns for academic library users’ interlibrary loan requests for materials already available at their college or university library. This study examines interlibrary loan statistics at...

A method for homogenization of an elastic composite with periodic microstructure is presented, focusing on the Floquet-type elastic waves. The resulting homogenized frequency-dependent elasticity and mass density then automatically satisfy the overall conservation laws and by necessity produce the exact dispersion relations. It is also shown that the dispersion relations and the associated fiel...

Preparation of silver immobilized TiO2-Hectorite and its application in phenol photooxidation and Eschericia coli bacteria desinfection has been conducted. Material was obtained by two steps of synthesis: preparation of TiO2-Hectorite and silver immobilization into TiO2-Hectorite. Physico-chemical characterization to the prepared material compared to raw hectorite was conducted by X-ray Diffrac...