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It is important to build in an air gap in a wicking bed, between the water and the soil, with only 5-10% of the area crossing that boundary for wicking. This stops the soil from getting too sodden and helps prevent an odorous anaerobic decomposition from occurring. A badly constructed wicking bed may even have organic matter in the reservoir ...
Wicking bed, an agricultural irrigation system used in arid countries where water is scarce Wicking fabric, used for moisture management in layered clothing Wiking (disambiguation)
In geology, a graded bed is a bed characterized by a systematic change in grain or clast size from bottom to top of the bed. Most commonly this takes the form of normal grading, with coarser sediments at the base, which grade upward into progressively finer ones. Such a bed is also described as fining upward. [1]
Beds of lava flows exposed on the island of La Gomera. Bed thickness is a basic and important characteristic of beds. Besides mapping stratigraphic units and interpreting sedimentary facies, the analysis of bed thickness can be used to recognize breaks in sedimentation, cyclic sedimentation patterns, and gradual environmental changes. [10]
Sometimes the term moon pool is used to mean the complete chamber, not just the opening in the bottom and the air–water interface. The alternative to a moon pool in an underwater habitat is the lock-out chamber , which is essentially like a fixed submarine , maintaining internal air pressures lower than ambient sea pressure down to one ...
Raised-bed gardening is a form of gardening in which the soil is raised above ground level and usually enclosed in some way. Raised bed structures can be made of wood, rock, concrete or other materials, and can be of any size or shape. [ 1 ]
An osier bed is an area where willows were formerly planted and coppiced to produce withies which were used for basket making, fish-traps, and other purposes. The willow species salix viminalis was typically grown for this purpose. Willow rods (cuttings) would be planted, which root easily in moist ground, and the growth of the willow withies ...
A box-bed is a bed having the form of a large box with wooden roof, sides, and ends, opening in front with two sliding panels or shutters; often used in cottages in Scotland: sometimes also applied to a bed arranged to fold up into a box. A brass bed has a frame constructed from brass. A brass-plated bed is a cheaper bed of iron with a thin ...