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A deep-diving system has been designed for use with colonies of small rodents at pressures up to 170 ATA. The system consists of a triple-envelope arrangement in which a modular habitat serves as the ...
System for the passive measurement and analysis of high pressure nervous syndrome tremor in animals
System passive measurement analysis high pressure nervous syndrome tremor animals
2009/7/20
System for the passive measurement and analysis of high pressure nervous syndrome tremor in animals.
Chamber-based system for physiological monitoring of submerged exercising subjects
human equipment exercise immersion
2009/7/17
A system has been designed which allows for measurement of cardiorespiratory parameters in the fully submerged subject performing graded exercise. It consists of a horizontal wet chamber; a waterproof...
Ultrasonic imaging system for the study of decompression-induced gas bubbles
Ultrasonic Imaging equipment bubble
2009/7/17
An high-resolution pulse echo ultrasonic imaging system has been developed to study decompression-induced gas bubbles. It was considered necessary that the system be capable of detecting gas bubbles w...
A system for pharmacological studies in small animals at high pressure
pharmacological animal rat
2009/7/16
A four-liter pressure chamber was constructed for pharmacological experiments in rats; it consisted of the following: 1) a system for repeated, accurate injection; 2) an alternative single-dose inject...
Operator performance in the one-atmosphere diving system JIM in water at 20 degrees C and 30 degrees C
human one-atmosphere Operator
2009/7/16
Performance and physiology of five operators of the one-atmosphere diving system JIM were assessed when diving JIM in mild (20 degrees C) and warm (30 degrees C) water. Each operator completed a minim...
Central nervous system reactions during heliox and trimix dives to 31 ATA
human trimix heliox Central nervous system
2009/7/16
Two groups of divers were compressed to 300 msw (984 fsw) with heliox (n = 3) and trimix (n = 3). Neuropsychological/neurological testing was performed repeatedly during the compression and on reachin...
Central nervous system reactions during heliox and trimix dives to 51 ATA, DEEP EX 81
nitrogen human heliox trimix
2009/7/15
Two groups of divers were compressed to 500 msw with heliox (n = 3) and trimix (n = 3). They were followed with repeated neuropsychological and neurological tests during compression, at stable interme...
Central nervous system oxygen toxicity in closed circuit scuba divers II
human oxygen toxicity Central nervous system
2009/7/14
Central nervous system oxygen toxicity is currently the limiting factor in underwater swimming/diving operations using closed-circuit oxygen equipment. A dive series was conducted at the Navy Experime...
Blood glucose as a predictive measure for central nervous system oxygen toxicity in conscious rats
hyperbaric oxygen toxicity rats Blood glucose
2009/7/14
Blood glucose concentration was measured during continuous electrocorticographic (ECoG) recording in conscious rats exposed to 3 and 5 atmosphere absolute oxygen (ATA O2). The preconvulsive oxygen-ind...
Central nervous system oxygen toxicity in the resting rat: postponement by intermittent oxygen exposure
pulmonary oxygen toxicity seizure hyperbaric outcomes nitrox
2009/7/14
Intermittent O2 breathing is a proven means of delaying pulmonary O2 toxicity during exposure to hyperbaric oxygen. The effect of an intermittent exposure in the pressure range toxic to the CNS was st...
Central nervous system decompression sickness:latency of 1070 human cases
decompression sickness neurological hyperbaric human spinal cord
2009/7/10
Many aspects of central nervous system (CNS) decompression sickness (DCS) are poorly understood, including the temporal pattern of its presentation and the pathogenic mechanisms involved in the develo...
A chamber system for maintaining a hyperbaric environment for long-term animal studies
noise hyperbaric chamber animal studies method
2009/7/8
An experimental hyperbaric chamber system is described whereby animals, including nonhuman primates, can be cared for under altered environmental conditions for periods in excess of 1 wk. The chamber ...
A system for saturating in vitro preparations with high pressure O2,He,H2,and mixtures
saturation hydrogen hyperbaric chamber method
2009/7/8
Saturation of a liquid with gas before perfusing a tissue or cellular preparation under pressure can be achieved by bubbling the gas through the liquid. A container for this purpose that is housed in ...
Evaluation of a hyperbaric system to be used in conjunction with a fluorometer
chamber fluorometer Evaluation
2009/6/12
A high-pressure chamber that can be used inside the sample chamber of a spectrofluorometer is described and some performance characteristics are presented. The chamber body, constructed of 316 stainle...