An approach of generating broadband Bessel beams is presented. The broadband Bessel beams are produced by a gradient index (GRIN) metamaterial lens illuminated by broadband waveguide antenna. The metamaterial lens is constructed with multi-layered structure and each layer is composed of GRIN metamaterials. The metamaterials are designed as dielectric plates printed with metallic patterns in the...

Magnesium (Mg) has the advantage of being resorbed in vivo, but its resorption rate is difficult to control. With uncontrolled resorption, Magnesium as a bone fixation material has minimal clinical value. During resorption not only is the strength rapidly weakened, but rapid formation of metabolite also occurs. In order to overcome these disadvantages, hydroxyapatite (HA) surface coating of pur...

In this work we deal with the determination of membership probabilities for stars in the eld of the southern open cluster NGC2516 via the determination of their relative proper motions, colours and magnitudes. To reach this goal we used plates taken with four diierent southern telescopes. A reliable membership determination is achieved for stars down to apparent magnitude B 16.5, which, at the ...

In a former work, we built a VLP (Vehicle License Plates) reader using computer vision. To test other methods, we decided to implement a whole new system from scratch. In this communication, we summarize the methods that we have tested and the results we have obtained. Plate location is based on mathematical morphology and character recognition is implemented using Hausdorff distance. Results a...

A modified version of the standard A.L.F DNA sequencer (Pharmacia, Uppsala) is described that allows the separation of up to 1000 bases per clone. Fragments were resolved at single peak resolution up to 700 bases. The raw data accuracy was >99.7%, resulting in an overall error rate of <0.01% for the final sequence after sequencing both DNA strands. The modifications include 60 cm thermostatic a...

The difference of the thermal Casimir forces at different temperatures between real metals is shown to increase with a decrease of the separation distance. This opens new opportunities for the demonstration of the thermal dependence of the Casimir force. Both configurations of two parallel plates and a sphere above a plate are considered. Different approaches to the theoretical description of t...

Recent advances in the design of photostimulable phosphor (PSP) plates for computed radiography (CR) systems have made it possible to manufacture plates made of BaFI:Eu phosphor material in the cassette form. The image quality of this plate, six BaF(Br,I):Eu plates, and one BaFBr:Eu plate were evaluated in terms of presampling modulation transfer function (MTF), normalized Wiener spectra (WSN),...

INTRODUCTION Noncontact transfer devices are demanded when silicon wafers or glass plates are carried in clean environment. Because contact of such products with a conveyer belt damaged their surface, non-contact transfer devices are needed for the use in clean environment. Many transfer devices using ultrasonic, electromagnetic or electrostatic levitation have been proposed. The authors also h...

We have experimentally observed uphill solitary waves in the surface flow on a granular material. A heap is constructed by injecting sand between two vertical glass plates separated by a distance much larger than the average grain size, with an open boundary. As the heap reaches the open boundary, solitary fluctuations appear on the flowing layer and move "up the hill" (i.e., against the direct...