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The classic essential text on anatomy...

PHA

The Lymphatic System

V F Murphy< a> Friday 10th April 2009

Structure, distribution, function The lymphatic system forms a one way flow system towards the heart. Through this system flows lymph, which starts from blind ended capillaries. The capillaries are very permeable, and feature a loose overlap feature, where with the aid of small anchoring filaments the vessel can take large particles and stay open where the external pressure is greater. This causes problems however, as the vessel also carries large particles, such as viruses, pathogens, and cell…

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Dealing with Amputee Phantom Pain

Larry Gardner Friday 24th September 2004

This is a personal account of one person 's experience with dealing with Amputee Phantom Pain

Larry is someone who knows a lot about dealing with Phantom Pain, something which he has had to come to terms with for many years.

"Whenever I meet another amputee, the subject of phantom pain eventually comes up. It seems most amputees have suffered through these pains in various forms and intensity.

"There are also some beliefs and misbeliefs about phantom pain, phantom sensation, and stump…

Phantom Pain

Ahmed Bilal Friday 24th September 2004

While prosthetics is essentially a scientific field dealing primarily with helping amputees regain their ease of movement and ability, there is much research and interest in dealing with the psychological effects of amputation. From cutting-edge research in cognitive patterns of amputees to help quicken the rehabilitation process to helping patients deal with residual issues such as the constant realization that they ve permanently lost a part of themselves, prosthetics is as much a science as i…

Wheelchair steered by brainpower

Based on the BBC Sunday 27th July 2003

The BBC reports today upon ongoing research by the Dalle Molle Institute for Perceptual Artificial Intelligence into the use of EEG (electroencephalography) for navigation of wheelchairs.

The technology relies upon improvements in EEG to allow a greater signal to noise ratio to be obtained.

Read the full article BBC …

Pancreatic tissue engineering

V F Murphy< a> Tuesday 27th May 2003

Define the design requirements and constraints for an immuno-isolation membrane to encapsulate isolated islets of Langerhans for pancreatic tissue engineering.

The design requirements and constraints must spring from the function of the immuno-isolation membrane. The membrane serves to isolate the islets without exposing them to the immune system, but still permitting them to work with certain other nutrients within the bloodstream.

The function we are concerned with is the detection of g…

EEG Applications in Modern Medicine

A J Michael< a> Thursday 1st January 1970

Electroencephalography (EEG) or brain imaging has come a long way since its inception more than 100 years ago. English physician Richard Caton discovered the existence of electrical currents in 1875 and later in the 1920s, Hans Berger was the first who recorded brain activity and coined the word electroencephalogram to describe brain electric potentials in humans. Four types of brainwaves are recorded according to frequencies alpha, beta, theta and delta. EEG is used primarily in studying the pr…

Polyhydroxyalkanoates for tissue engineering

Anne John Michael Thursday 1st January 1970

Polyhydroxyalkanoates (PHA), polyesters produced by microorganisms under unbalanced growth conditions (Doi 2002) have potential applications for medical and pharmaceutical purposes. The primary factor is because of their biodegradability. Nevertheless other favorable qualities such as their adaptability to suit the requirements of different applications, non-toxicity and thermoprocessibility properties have propelled their uses as tissue engineering biomaterials. Polyhydoxyalkanoates (PHA) and i…