SHORT COMMUNICATION : THE EFFECT OF OXYGEN IN CARBON DIOXIDE FORMING OF METHANE OVER A RH ( 5 WT % ) / Al2O3CATALYST

2002 ◽  
Vol 7 (3) ◽  
pp. 185-189
Author(s):  
Ho-Jun Seo
Keyword(s):  
Carbon Dioxide ◽  
Short Communication ◽  
Effect Of Oxygen

Radiolysis of aqueous 2,2,2-tribromoethanol solutions

1970 ◽  
Vol 48 (16) ◽  
pp. 2542-2548 ◽  
Author(s):  
V. G. Sorensen ◽  
V. M. Bhale ◽  
K. J. McCallum ◽  
R. J. Woods
Keyword(s):  
Carbon Dioxide ◽  
Dose Rate ◽  
Glycolic Acid ◽  
Hydrogen Bromide ◽  
Photochemical Decomposition ◽  
Bromide Ion ◽  
Presence And Absence ◽  
Effect Of Oxygen

Hydrogen bromide, glycolic acid, and carbon dioxide have been identified as products of the γ-radiolysis of aqueous 2,2,2-tribromoethanol solutions. The effect of oxygen, tribromoethanol concentration, and dose rate upon the yields of bromide ion and acid have been determined, and partial radiolysis mechanisms are proposed for reaction in the presence and absence of oxygen. Dibromoacetaldehyde, reported to be a product of the photochemical decomposition of tribromoethanol solutions, was not detected in the radiolysis experiments or in tribromoethanol solutions exposed to sunlight.

The behaviour of plants in various gas mixtures

1971 ◽  
Vol 179 (1056) ◽  
pp. 177-188
Keyword(s):  
Carbon Dioxide ◽  
Gas Exchange ◽  
Partial Pressure ◽  
Higher Plants ◽  
Dry Mass ◽  
Carbon Dioxide Partial Pressure ◽  
Ambient Oxygen ◽  
Leaf Dry Mass ◽  
Rate Of Photosynthesis ◽  
Effect Of Oxygen

The effects of the composition and pressure of the ambient gas mixture on the diffusive gas exchange of leaves, and the effects of carbon dioxide and oxygen on respiration and photosynthesis are described. When photosynthesis is limited by the rate at which carbon dioxide reaches the chloroplasts, the net rate of photosynthesis of many (but not all) plant species depends on the ambient oxygen partial pressure. The effect of oxygen may be principally to stimulate a respiratory process rather than to inhibit carboxylation. However, when photosynthesis is not limited by the carbon dioxide supply, this respiratory process seems to be suppressed. The gas exchange of plant communities responds to the aerial environment in the way expected from measurements on single leaves, but the growth response to a given difference in gas composition is smaller than expected because of adaptation, notably in the ratio of leaf dry mass to leaf area. It is concluded that the growth rate of higher plants in given illumination will be independent of the partial pressure of oxygen and of other gases likely to be used to dilute it, provided that the carbon dioxide partial pressure is so adjusted (probably to not more than 2 mbar (200 Pa)) that the rate of photosynthesis is not limited by the rate of diffusion to the chloroplasts.

Effect of Oxygen Contamination on Inhibition Studies in Carbon Dioxide Corrosion

CORROSION ◽  
2005 ◽  
Vol 61 (11) ◽  
pp. 1086-1097 ◽  
Author(s):  
E. Gulbrandsen ◽  
J. Kvarekvål ◽  
H. Miland
Keyword(s):  
Carbon Dioxide ◽  
Carbon Dioxide Corrosion ◽  
Oxygen Contamination ◽  
Effect Of Oxygen ◽  
Inhibition Studies

A note on the effect of oxygen-compared with nitrogen-ventilated hay on energy retention of steers

1971 ◽  
Vol 13 (3) ◽  
pp. 557-560
Author(s):  
K. H. Menke ◽  
W. Schneider
Keyword(s):  
Carbon Dioxide ◽  
Oxygen Consumption ◽  
Heat Production ◽  
Energy Retention ◽  
Effect Of Oxygen

SUMMARYVentilation of hay with oxygen increased oxygen consumption (P< 0·001) and carbon dioxide formation (P<0·01) of two steers, when compared with nitrogen-ventilated hay. Heat production was about 5% higher in the oxygen-hay period than in the nitrogen-hay period (P< 0·001). No difference in digestibility of nutrients was observed between these treatments.

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