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threshold velocity

Listing 1 - 2 from 2 for threshold velocity

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soil particles phototropic reaction soil surface vegetative barriers blowing soil phototropic bending bunsen roscoe law unsheltered distance glass window white light stable barrier reduce erosion soil transported avena coleoptiles surface creep conservation compliance

Controlling Soil Erosion From Wind
... detachment, transport, sorting, abrasion, avalanching, and deposition of soil particles. Turbulent winds above a threshold velocity (13 miles per hour at one foot above the ground) blowing over erodible soils ... particles, trapping soil particles creeping along the ground, and reducing wind speeds below the threshold velocity along the ground for a distance of ten times (10x) the barrier height. This ...
www.ext.colostate.edu

Botany online: Growth Movements - Phototropism
... certain minimal amount of light has to be present in order to trigger the reaction (threshold value), and an increase in light intensity does not always cause an increase in the ... not occur. The question how opposite walls of the same cell can grow with differing velocity remains. Changes of the turgor cannot explain it. © Peter v. Sengbusch - Impressum
www.biologie.uni-hamburg.de