Modelling air flow and ambient temperature effects on the biological self-heating of compost piles

2010 ◽  
Vol 5 (4) ◽  
pp. 609-618 ◽  
Author(s):  
T. Luangwilai ◽  
H. S. Sidhu ◽  
M. I. Nelson ◽  
X. D. Chen
1975 ◽  
Vol 53 (6) ◽  
pp. 679-685 ◽  
Author(s):  
J. B. Holter ◽  
W. E. Urban Jr. ◽  
H. H. Hayes ◽  
H. Silver ◽  
H. R. Skutt

Six adult white-tailed deer (Odocoileus virginianus borealis) were exposed to 165 periods of 12 consecutive hours of controlled constant ambient temperature in an indirect respiration calorimeter. Temperatures among periods varied from 38 to 0 (summer) or to −20C (fall, winter, spring). Traits measured were energy expenditure (metabolic rate), proportion of time spent standing, heart rate, and body temperature, the latter two using telemetry. The deer used body posture extensively as a means of maintaining body energy equilibrium. Energy expenditure was increased at low ambient temperature to combat cold and to maintain relatively constant body temperature. Changes in heart rate paralleled changes in energy expenditure. In a limited number of comparisons, slight wind chill was combatted through behavioral means with no effect on energy expenditure. The reaction of deer to varying ambient temperatures was not the same in all seasons of the year.


Life Sciences ◽  
1966 ◽  
Vol 5 (20) ◽  
pp. 1887-1896 ◽  
Author(s):  
Mohamed K. Yousef ◽  
Larry Z. McFarland ◽  
Wilbor O. Wilson

2015 ◽  
Vol 3 ◽  
pp. 3123-3127 ◽  
Author(s):  
Nazi Faisal A. Chowdhury

2005 ◽  
Author(s):  
Gerald L. Morrison ◽  
Pardeep Brar

The flow field inside gas pipeline meter run is numerically simulated to determine the affects of upstream piping and temperature differences between the meter run pipe and the gas upon the flow. At bulk averaged velocities below 0.6 m/s (2 ft/s) significant changes in the velocity field are present which may alter the response of any flow meter mounted in the meter run. Examples for a bulk average velocity of 0.15 m/s (1/2 ft/s) and temperature differences with magnitudes of 27.7°C (50°F) are presented.


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