Modarreszadeh and Bruce (J. Appl. Physiol. 76: 2765-2775, 1994) proposed that continuous random disturbances in arterial PCO2 are more likely to elicit ventilatory oscillation patterns that mimic periodic breathing in normoxia than in hyperoxia. To test this hypothesis experimentally, in nine awake humans we applied pseudorandom binary inspired CO2 fraction stimulation in normoxia and hyperoxia...

In this work, an evaluation and quantification of the impact using mixtures based on supercritical carbon dioxide “s-CO2” (s-CO2/COS, s-CO2/H2S, s-CO2/NH3, s-CO2/SO2) are made as a working fluid in simple complex recompression Brayton s-CO2 power cycle configurations that have pressure drops their components. These cycles coupled with solar thermal plant parabolic-trough collector (PTC) technol...

Abstract Syngas production from catalytic gasification of polystyrene and pinewood in CO2 atmosphere was investigated over Ni-Mg/Al2O3 catalyst a fixed-bed reactor at 900 °C. A quasi situ method adopted for wherein the placed downstream feedstock same used enhanced syngas production. The effect on evolutionary behavior, cumulative yield, composition, cold gas efficiency systematically analyzed....

Between June 2010 and June 2011, the National Institute of Standards and Technology (NIST) gravimetrically prepared a suite of 20 carbon dioxide (CO2) in air primary standard mixtures (PSMs). Ambient mole fraction levels were obtained through six levels of dilution beginning with pure (99.999%) CO2. The sixth level covered the ambient range from 355 to 404 μmol/mol. This level will be used to c...

Understanding the interactions between the land surface and the atmosphere is key to modelling boundarylayer meteorology and cloud formation, as well as carbon cycling and crop yield. In this study we explore these interactions in the exchange of water, heat and CO2 in a cropland– atmosphere system at the diurnal and local scale. To that end, we couple an atmospheric mixed-layer model (MXL) to ...

Tankersley, Clarke G., and Karl W. Broman. Interactions in hypoxic and hypercapnic breathing are genetically linked to mouse chromosomes 1 and 5. J Appl Physiol 97: 77–84, 2004. First published February 20, 2004; 10.1152/japplphysiol.01102.2003.—The genetic basis for differences in the regulation of breathing is certainly multigenic. The present paper builds on a well-established genetic model ...

This paper presents results from stability analysis and testing on high pressure CO2 centrifugal compressors, beginning by a preliminary analysis conducted on an academic institution. It includes results of stability tests that were carried out in manufacturer facilities. The tests were done on two different compressor designs, both operating with high content of CO2 in super critical condition...

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Context The CO2CRC is involved in research, development and demonstration of a number of different methods for the large scale capture of carbon dioxide. The Engineering Development Group within the CO2CRC is involved with assessing and optimization the process designs associated with the capture of CO2. The Engineering Development Group recently assessed a number of capture methods for air blo...