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An Externally-coupled Transcutaneous Energy Transmission System for Totally Implantable Artificial Hearts—Detection of Abnormal Coupling Caused by Misalignment and Air Gap in the Ferrite Core Junction of the Transcutaneous Transformer
artificial heart externally-coupled transcutaneous energy transmission system abnormal coupling sensor coil hall device
2009/6/9
It is typical to supply energy using a transcutaneous transformer for driving implantable artificial hearts. Producing an abnormal coupling in the transcutaneous transformer causes the temperature of...
Probabilistic gas and bubble dynamics models of decompression sickness occurrence in air and nitrogen-oxygen diving
Gerth,WA Vann,RD
2009/6/8
Probabilistic models of the occurrence of decompression sickness (DCS) with instantaneous risk defined as the weighted sum of bubble volumes in each of three parallel-perfused gas exchange compartment...
Pharmacologic modulation of pulmonary vascular permeability during air embolism
pulmonary animal rat embolism AGE Pharmacologic air
2009/6/8
Pulmonary air embolism induces the generation of vasoactive and cytotoxic substances leading to lung injury. In the present study we investigated, in isolated and perfused rat lungs, the involvement o...
Compressed air tunneling and caisson work decompression procedures: development, problems, and solutions
decompression commercial air
2009/6/8
Multinational experience over many years indicates that all current air decompression schedules for caisson and compressed air tunnel workers are inadequate. All of them, including the Occupational Sa...
Effect of dysoxia and moderate air-hyperbarism on red-green color sensitivity
eye flicker HBO nitrogen hypoxia hyperbaric
2009/6/8
The effect of acute air-hyperbarism (maximal 520 kPa), normobaric low and high FIO2 levels (minimal 0.1, maximal 1.0) and hyperbaric oxygen (HBO2) on the red-green sensitivity ratio (rgSR) and on colo...
Computer simulation of microscopic cerebral air emboli absorption during cardiac surgery
nitrogen model cerebral blood flow air air emboli
2009/6/8
Microscopic cerebral arterial air emboli (MCAAE) cause neurologic injury during cardiac surgery. We used a mathematical model of gas absorption to gain a preliminary assessment of what physical or phy...
We investigated the effects of an elevated ambient air pressure of 0.6 MPa on verbal memory performance. Twenty-four experienced divers were compressed in a dry hyperbaric chamber to pressures equival...
Influence of gender and menstrual cycle on a cold air tolerance test and its relationship to thermosensitivity
cold women menstrual air gender thermal
2009/6/5
This investigation evaluated the influence of gender and phase of menstrual cycle [follicular (FOL): Days 2-6) and luteal (LUT: Days 19-24)] on a cold air tolerance test (CATT: 90-min of exposure to 5...
Effects of breathing air at 4 atm abs:evidence for a change in strategy
hyperbaric air breathing
2009/6/5
The effect of breathing air at 4 atm abs on two tasks was investigated. For the recognition memory task, subjects learned a list of symbols in anticipation of a recognition test. The second task was a...
Ocular tear film bubble counts after recreational compressed air diving
dry air bubble count Ocular tear film recreational dive
2009/6/5
Other authors have demonstrated an increase in tear film bubble counts following dry, compressed air dives. We examined the lower tear film meniscus for the presence of bubbles in 42 divers after comp...
The effect of air bubbles on rabbit blood brain barrier
animal Rabbit Blood-Brain Barrier drug effects Brain drug effects
2009/6/5
Several investigators have claimed that the blood brain barrier (BBB) may be broken by circulating bubbles, resulting in brain tissue edema. The aim of this study was to examine the effect of air bubb...
Effect of air diving exposure generally encountered by recreational divers:oxidative stress?
Biological Markers Breath Tests Diving adverse effects physiology human Malondialdehyde
2009/6/5
Long term effects on respiratory function have been found in air divers and have indicated the development of small-airway disease. These effects have been attributed to oxygen toxicity or to venous g...
Microdialysis in cisterna magna during cerebral air embolism in swine
Animal swine Brain blood supply Cisterna Magna Embolism
2009/6/5
Arterial gas embolism may occur as a consequence of lung rupture, decompression sickness, following operative procedures or as accidental infusion of gas during various diagnostic procedures. It can l...
Health outcome following multi-day occupational air diving
Analysis of Variance Decompression Sickness Disease Susceptibility Health Status
2009/6/4
Acclimatization to decompression stress has been reported in caisson workers and helium-oxygen divers; however the alternative notion that the risk of decompression sickness increases with successive ...
Measurement of fatigue following 18 msw dry chamber dives breathing air or enriched air nitrox
Analysis of Variance air Atmosphere Exposure Chambers Atmospheric Pressure Attention Decompression
2009/6/4
Many divers report less fatigue following diving breathing oxygen rich N2-O2 mixtures compared with breathing air. In this double blinded, randomized controlled study 11 divers breathed either air or ...