搜索结果: 16-30 共查到“军事医学与特种医学 nitrogen”相关记录35条 . 查询时间(0.201 秒)
Moderate hypercapnia:cardiovascular function and nitrogen elimination
CO2 carbon dioxide nitrogen elimination hypercapnia nitrogen cardiovascular
2009/6/12
Elevated carbon dioxide concentrations frequently encountered in diving operations may have cardiovascular effects. If so, changes in nitrogen loading and elimination may be induced. To study this pos...
Exercise effects on central venous nitrogen tensions after simulated non-decompression dives
saturation exercise air dive
2009/6/12
In five subjects we examined the effect of exercise on the pattern of central venous (right atrial) N2 tensions (PVN2) after ascent from simulated non-decompression dives. The dives consisted of expos...
Dissociation of the behavioral and subjective components of nitrogen narcosis and diver adaptation
nitrogen narcosis hyperbaric chamber adaptation
2009/6/12
We investigated adaptation to nitrogen narcosis by compressing 11 highly experienced divers in a hyperbaric chamber to the equivalent of 54.6 meters of seawater once a day for 5 consecutive days. The ...
The authors developed a new apparatus for extracting nitrogen or other inert gases from blood by flushing (sparging) the specimen with another gas. To investigate the utility of the new methodology, t...
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...
Change in strategy of solving psychological tests:evidence of nitrogen narcosis in shallow air-diving
Analysis of Variance Atmospheric Pressure Atmosphere Exposure Chambers Diagnosis
2009/6/4
The depths from 10 to 30 m are usually not considered narcotic in scuba air-diving, and evidence of psychomotor disturbances attributable to nitrogen narcosis at these depths is weak and contradictory...
Tissue nitrogen elimination in oxygen-breathing pigs is enhanced by fluorocarbon-derived intravascular micro-bubbles
Algorithms Analysis of Variance Fluorocarbons administration dosage animal Microbubbles
2009/6/3
The present study tested the hypothesis that intravascular micro bubbles generated by i.v. infusion of a 2 % dodecafluoropentane (DDFP) emulsion will enhance tissue denitrogenation during oxygen breat...
The effect of endurance training on the rate of nitrogen elimination in women
DIVERS nitrogen elimination aerobic capacity Decompression Sickness chronic training nitrogen oxygen interval training heart rate exercise
2009/6/2
INTRODUCTION: The rate of nitrogen elimination may be an important factor in evaluating the risk of DCS following dives. The present study determined the reproducibility of a method for evaluating nit...
Hyperbaric nitrogen and pentobarbital on synaptosomal membrane lipids and free fatty acids
anesthetic pentobarbital lipid monolayer enzyme synaptosomal membrane phospholipid free fatty acid animal Rats,Wistar
2009/6/2
Nitrogen at high pressures and anesthetics increase lipid monolayer surface pressure and in turn modulates monolayer associated lipolytic enzyme activity that could alter membrane lipids. We tested th...
Negative pressure oxygen breathing and head-down tilt increase nitrogen elimination
hyperbaric Human Negative pressure breathing nitrogen elimination cardiac output venous return head down tilt Hyperoxia physiopathology hyperoxia prebreathing decompression
2009/6/2
Negative pressure breathing (NPB) increases the rate of nitrogen elimination, which is thought to be due to an increase in cardiac output due to augmented venous return to the heart. Hyperoxia, howeve...
Effects of NMDA administration in the substantia nigra pars compacta on the striatal dopamine release before and after repetitive exposures to nitrogen narcosis in rats
hyperbaric nitrogen nitrogen narcosis striatal dopamine release repetitive exposure animal rat NMDA receptor Dopamine
2009/6/2
Hyperbaric nitrogen-oxygen exposure developed in rats a decrement of the striatal dopamine release, which was reversed by repetitive exposures. This dopamine decrease could be the result of the antago...
Intravenous perfluorocarbon emulsion increases nitrogen washout after venous gas emboli in rabbits
Intravenous perfluorocarbon emulsion Decompression Sickness gas embolism GAS EXCHANG (BIOLOGY) perfluorocarbon venous gas emboli bubble arterial gas emboli Animal rabbit Oxygent
2009/6/2
Intravenous perfluorocarbon emulsion (IV-PFC) has been shown to provide hemodynamic protection from gas embolism (Venous-VGE or arterial-AGE). The objective of this study was to investigate the mechan...
Isolated inner ear decompression illness following a nitrogen/oxygen dive: the difficulty in differentiating inner ear decompression illness and inner ear barotrauma.
Decompression illness diving technical diving inner ear decompression illness barotrauma
2009/5/13
Inner ear decompression illness is typically associated with deep dives involving helium/oxygen mixtures, usually when gas switching to air during ascent. It is most commonly associated with other sym...
Effect of brief, repeated hyperbaric exposures on susceptibility to nitrogen narcosis
nitrogen narcosis hyperbaric chamber adaptation
2009/3/30
We investigated the effect of brief, repetitive exposures to 5.5 ATA (148 fsw) in a hyperbaric chamber on adaptation to nitrogen narcosis. A standing-steadiness task, which measures body sway, was adm...
Exercise effects on central venous nitrogen tensions after simulated non-decompression dives
saturation exercise air
2009/3/28
In five subjects we examined the effect of exercise on the pattern of central venous (right atrial) N2 tensions (PVN2) after ascent from simulated non-decompression dives. The dives consisted of expos...