β Scribed by Rollin, E. M.
No coin nor oath required. For personal study only.
Black porous disc atmometers were used to measure daily evaporation ( E ) at a distance of 4H (where H is barrier height) leeward of a medium porous hedge and in the open. The modification of E at the sheltered position was defined, in relative terms, as the percentage of the sheltered E to that in the open (relative E ) and in absolute terms as the difference between the open and sheltered E totals. Although relative E was found to vary as a linear function of the relative wind (RW), E differences varied also with the meteorological conditions influencing the 'evaporative climate', identified here by the weather parameters: cloud cover, relative humidity and wind speed. For a particular value of relative E , the E differences were greatest on days with no cloud, low humidity and moderate wind speed and least on cloudy, humid days with low wind speed.
π SIMILAR VOLUMES
The effect of an external stress on the barrier properties of natural, bromobutyl, and nitrile rubber were studied using a modified ASTM permeation method. Stress-induced changes such as a decrease in the breakthrough time with mechanical elongation was observed. Upon application of a small mechanic
## Abstract A oneβdimensional model for a porous fuel cell electrode using a liquid electrolyte with dissolved reactant is presented. The model consists of a Poisson, secondβorder ordinary differential equation, describing the effect of the electric field and a oneβdimensional; Fickian diffusion, s