Diffusion-controlled reference material for VOC emissions testing: effect of temperature and humidity

Indoor Air ◽  
2013 ◽  
Vol 24 (3) ◽  
pp. 283-291 ◽  
Author(s):  
Z. Liu ◽  
C. Howard-Reed ◽  
S. S. Cox ◽  
W. Ye ◽  
J. C. Little
Indoor Air ◽  
2010 ◽  
Vol 20 (5) ◽  
pp. 424-433 ◽  
Author(s):  
S. S. Cox ◽  
Z. Liu ◽  
J. C. Little ◽  
C. Howard-Reed ◽  
S. J. Nabinger ◽  
...  

2014 ◽  
Vol 64 (4) ◽  
pp. 468-480 ◽  
Author(s):  
Cynthia Howard-Reed ◽  
Zhe Liu ◽  
Steven Cox ◽  
Dennis Leber ◽  
Dan Samarov ◽  
...  

2013 ◽  
Vol 47 (22) ◽  
pp. 12946-12951 ◽  
Author(s):  
Zhe Liu ◽  
Xiaoyu Liu ◽  
Xiaomin Zhao ◽  
Steven S. Cox ◽  
John C. Little

1971 ◽  
Vol 49 (3) ◽  
pp. 240-262 ◽  
Author(s):  
E. E. Daniel ◽  
Kathleen Robinson

The uptake and efflux of 22Na was studied in isolated rat uterine horns (both fresh and Na-rich) at 5, 15, 25, and 37 °C. Reduction of temperature from 37 °C to 25 or to 15 °C reduced 22Na uptake into, and efflux from, both the extracellular space and cells to the degree expected of a diffusion-controlled process (Q10 < 2). Reduction of the temperature to 5 °C during uptake into Na-rich horns revealed that a substantial fraction of cellular sodium became less exchangeable. At 5 °C, 22Na efflux was also markedly reduced, more than from ouabain or ATP depletion. Analysis of this change by curve-peeling and by reducing the temperature at various stages of efflux suggested that the main cause was a shift of 22Na from the larger, faster cellular fraction (No. 2) to the slower cellular fraction (No. 3). Bound 22Na was also markedly increased. The rate coefficients from curve-peeling for both cellular fractions were decreased. Radioactivity still in fraction 2 at 5 °C emerged at a rate of about half that at 15 °C. However, an overall coefficient for efflux of 22Na which would have emerged in fraction 2 at 15 or 25 °C showed that the Q10 for 22Na efflux between 5 and 15 °C was about 15. Tissues did not swell when they gained sodium at 5 °C. The effects of ouabain to increase 22Na influx and 42K efflux were eliminated at 5 °C. The effects of ATP depletion by iodoacetate and dinitrophenol to decrease 22Na efflux and to increase 22Na uptake, K loss, and swelling were reduced at 5 °C. Prior ATP depletion altered but did not prevent the marked reduction of efflux by cooling to 5 °C. Efflux of lithium, but not of potassium, was markedly slowed at 5 °C. K-free solutions still increased 22Na uptake at 5 °C. A model involving pinocytotic vesicles to explain these and earlier results was postulated.


AIHAJ ◽  
1987 ◽  
Vol 48 (7) ◽  
pp. 639-645 ◽  
Author(s):  
R. NIELSEN ◽  
A.R. GWOSDOW ◽  
L.G. BERGLUND ◽  
A.B. DuBOIS

2006 ◽  
Vol 65 (3) ◽  
pp. 606-628 ◽  
Author(s):  
Annop Suriyasomboon ◽  
Nils Lundeheim ◽  
Annop Kunavongkrit ◽  
Stig Einarsson

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