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Hydrophobic soil is a soil whose particles repel water. The layer of hydrophobicity is commonly found at or a few centimeters below the surface, parallel to the soil profile. [ 1 ] This layer can vary in thickness and abundance and is typically covered by a layer of ash or burned soil.
Water on hydrophobic surfaces will exhibit a high contact angle. Examples of hydrophobic molecules include the alkanes, oils, fats, and greasy substances in general. Hydrophobic materials are used for oil removal from water, the management of oil spills, and chemical separation processes to remove non-polar substances from polar compounds. [2]
Treasured Earth (Hungarian: Talpalatnyi föld) is a 1948 Hungarian drama film directed by Frigyes Bán and starring Ági Mészáros, Ádám Szirtes and Tibor Molnár. It is based on a novel by Pál Szabó. It is also known by the alternative title The Soil Under Your Feet.
September 17 2007 - Soil de-listed from good article status due to lack of breadth and a bias towards soil science. February 10 2007 - Soil achieves good article status. September 15 2006 - Soil is tagged as a Class A article for Wikipedia version 0.5 by Titoxd.
Hardpan - Headland (agriculture) - Hesco bastion - Hilo (soil) - History of soil science - Histosol - Houdek (soil) - Hume (soil) - Humin - Humus - Hydraulic conductivity - Hydric soil - Hydro axe mulching - Hydrological transport model - Hydropedology - Hydrophobic soil
The hydrophobic soil particle is coated in a wax-like lipid compound with a hydrophilic head is attached to the individual particle and the hydrophobic tail is surrounding the outside of the particle. This hydrophobic tail shields any water from being absorbed by soil particles when many are affected.
Hydrophobins are characterised by the presence of 8 conserved cysteine residues that form 4 disulphide bonds. [15] They are able to reverse the wettability of surfaces by spontaneous self-assembly of the monomeric proteins into amphipathic monolayers at hydrophobic:hydrophilic surfaces.
A gleysol or gley soil is a hydric soil that unless drained is saturated with groundwater for long enough to develop a characteristic gleyic colour pattern. The pattern is essentially made up of reddish, brownish, or yellowish colours at surfaces of soil particles and/or in the upper soil horizons mixed with greyish/blueish colours inside the ...