Temperature and respiratory gas (CO2 and O2) concentrations were measured in the foraging tunnels of burrows naturally inhabited by two species of southern African mole-rats, the Cape mole-rat Georhychus capensis and the Damaraland mole-rat Cryptomys damarensis. Both species are completely fossorial and inhabit closed burrow systems. Tunnels of G. capensis burrows had a mean diameter of 8.7 cm ...

Studies were undertaken to investigate the effect of different modified atmospheric packaging (MAP) gaseous combinations on Campylobacter and the natural microflora on poultry fillets. Skinless chicken fillets were stored in gaseous mixtures of 10%, 30%, 50%, 70% and 90% CO2 balanced with N2, 80:20% O2:N2 and 40:30:30% CO2:O2:N2 and control conditions (air) at 2 °C. Samples were analysed period...

Measurement of gases entrapped in clean ice from basal portions of the Taylor Glacier, Antarctica, revealed that CO2 ranged from 229 to 328 ppmv and O2 was near 20% of the gas volume. In contrast, vertically adjacent sections of the sediment laden basal ice contained much higher concentrations of CO2 (60,000 to 325,000 ppmv), whereas O2 represented 4 to 18% of the total gas volume. The deviatio...

This paper addresses the experimental investigation of coal combustion characteristics (ignition, burnout and NO formation) under oxy-steam conditions. Two coals are selected in order to compare effect rank: bituminous sub-bituminous ones. The experiments have been conducted an electrically-heated entrained flow reactor for a set O2/N2, O2/CO2 O2/H2O/CO2 atmospheres, with O2 concentrations up 3...

The influences of storage temperature and modified O2 and CO2 concentrations in the atmosphere on the post-cutting life and quality of fresh-cut pineapple (Ananas comosus) were studied. Temperature was the main factor affecting post-cutting life, which ranged from 4 days at 10 ◦C to over 14 days at 2.2 and 0 ◦C. The end of post-cutting life was signaled by a sharp increase in CO2 production fol...

Hill, Donna R., Marianne E. Brunner, Deborah C. Schmitz, Catherine C. Davis, Janine A. Flood, Patrick M. Schlievert, Sherry Z. Wang-Weigand, and Thomas W. Osborn. In vivo assessment of human vaginal oxygen and carbon dioxide levels during and post menses. J Appl Physiol 99: 1582–1591, 2005. First published June 2, 2005; doi:10.1152/japplphysiol.01422.2004.—Previous in vitro and in vivo animal s...

The aim of the present study was to assess the feasibility of measuring combined arterial oxygen saturation measured by pulse oximetry (Sp,O2) and cutaneous carbon dioxide tension (Pc,CO2) to monitor ventilation and quantify change in Pc,CO2 during bronchoscopy. Combined Sp,O2 and Pc,CO2 were measured at the ear lobe in 114 patients. In four patients, the ear-clip slipped and they were excluded...