This paper presents an empirical investigation on the performance of body implant communication using radio frequency (RF) technology. In body implant communication, the electrical properties of the body influence the signal propagation in several ways. We use a Perspex body model (30 cm diameter, 80 cm height and 0.5 cm thickness) filled with a liquid that mimics the electrical properties of t...

A full matrix capture technique is presented that allows for real-time imaging through a non-planar surface where the geometry is known. For an identified geometry the point of incidence at the refractive interface is calculated using Fermat’s principle and iterative techniques for each possible transducer position which is pre-processed ahead of the inspection. This information is combined wit...

The base sledge microtome presents a hazard to the operator due to the length of blade that is exposed. Manipulation of the carriage requires hand movements close to the knife edge and serious lacerations may result. A simple, effective guard has been devised, suitable for knives which have screw holes for handles at both ends. It consists of two perspex end-pieces (Fig. I), attached to the kni...

Naïve, hatchery-reared Atlantic salmon Salmo salar parr were paired with demonstrators that had been pre-trained to accept live prey from the surface or from the benthos. After 6 days of observing demonstrators through a clear perspex partition the naïve fish’s benthic foraging skills were tested. The results revealed that hatchery-reared Atlantic salmon can be taught to target benthic prey ite...

Sounds of Solitaire is a novel interface for musical expression based on an extended peg solitaire board as a generator of live musical composition. The classic puzzle game, for one person, is extended by mapping the moves of the game through a self contained system using Arduino and Raspberry Pi, triggering both analogue and digital sound. The solitaire board, as instrument, is presented as a ...

Micro-contact printing (μCP) is a rapid, simple and well-established method of microscale biochemical patterning. However, there is a lack of inexpensive and accessible tools for accurately controlling contact during the printing process. In this paper, controlled μCP using hydraulic actuation is demonstrated. Complete printing systems, including a substrate placed at a calibrated height above ...

This paper presents a portable total reflection X-ray fluorescence system composed of a 15 W X-ray tube, with a gold anode, a waveguide constituted by two Perspex(®) parallel plates, a Si PIN detector and a quartz optical flat. The critical angle of the total reflection system was experimentally determined by measuring a zinc solution (100 mg/L). The accuracy of the system was checked using SRM...

park with accustomed difficulty, the three brakes tugging ineffectually on the wheel rims and our feet scuffing the gravel until we eventually wobbled to a halt. In matching army issue shorts, and rugby shirts and with our in flight entertainment of Sony Walkman and twin head-sets dangling from the front wicker basket, we felt slightly out of place. Standing by the hotel wall was an anorexic lo...

Introduction Travelling wave (TW) MRI is a relatively new imaging technique. An antenna is used to generate a TW which then propagates through the bore. This excites all the spins in the subject, allowing large volumes to be imaged simultaneously and reducing B1 field inhomogeneities. So far, most TW studies have used a patch antenna to create the TW, as they are simple in design and can be con...

In this paper, methods of surface modification of different supports, i.e. glass and polymeric beads for enzyme immobilisation are described. The developed method of enzyme immobilisation is based on Schiff’s base formation between the amino groups on the enzyme surface and the aldehyde groups on the chemically modified surface of the supports. The surface of silicon modified by APTS and GOPS w...