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A Closed-Loop Model of the Respiratory System: Focus on Hypercapnia and Active Expiration
Respiratory System Focus on Hypercapnia
2014/12/12
Breathing is a vital process providing the exchange of gases between the lungs and atmosphere. During quiet breathing, pumping air from the lungs is mostly performed by contraction of the diaphragm du...
The influence of hypercapnia and the infaunal brittlestar Amphiura filiformis on sediment nutrient flux – will ocean acidification affect nutrient exchange?
hypercapnia brittlestar Amphiura filiformis sediment nutrient flux ocean acidification
2010/1/21
Rising levels of atmospheric carbon dioxide and the concomitant increased uptake of this by the oceans is resulting in hypercapnia-related reduction of ocean pH. Research focussed on the direct effect...
Physiological stresses related to hypercapnia during patrols on submarines
submarine CO2 carbon dioxide hypercapnia Physiological
2009/7/17
Physiological studies on hypercapnic effects carried out on 13 Polaris patrols are summarized. The average CO2 concentrations ranged from 0.7-1% CO2; CO2 was identified as the only environmental conta...
Ventilatory and occlusion-pressure responses to hypercapnia in divers and non-divers
pulmonary human divers non-divers
2009/7/16
Ventilatory (VE/PCO2) and occlusion-pressure (P0.1/PCO2) responses to progressive hypercapnia (rebreathing method of Read (1)) were estimated in 20 normal subjects and 22 scuba divers. Indexes of CO2 ...
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...
Modification of oxygen tolerance in rats by adaptation to combined hypoxia and hypercapnia
pulmonary hypoxia oxygen toxicity hypercapnia carbon dioxide animal rat
2009/6/12
Tolerance to 100% O2 or to O2 with 60 torr PICO2 (O2-CO2) was determined at pressures of 1.0-4.0 atm abs in normal rats and in rats adapted to combined hypoxia and hypercapnia (HHA) before O2 or O2-CO...
Moderate hypercapnia：cardiovascular function and nitrogen elimination
CO2 carbon dioxide nitrogen elimination hypercapnia
2009/3/26
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 po...
Modification of oxygen tolerance in rats by adaptation to combined hypoxia and hypercapnia
pulmonary hypoxia oxygen toxicity hypercapnia carbon dioxide animal rat
2009/3/26
Tolerance to 100% O2 or to O2 with 60 torr PICO2 (O2-CO2) was determined at pressures of 1.0-4.0 atm abs in normal rats and in rats adapted to combined hypoxia and hypercapnia (HHA) before O2 or O2-...