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Flat slab subduction is characterized by a low subduction angle (<30 degrees to horizontal) beyond the seismogenic layer and a resumption of normal subduction far from the trench. [1] A slab refers to the subducting lower plate. A broader definition of flat slab subduction includes any shallowly dipping lower plate, as in western Mexico.
An abductor wedge is designed to separate the legs of a patient. It is often used after hip surgery to prevent the new hip from "popping out".. It can also be used to support the legs of an individual with spinal cord injury or severe physical or neurological disabilities in abduction (legs apart position) while seated in a wheelchair.
In medicine, Fowler's position is a standard patient position in which the patient is seated in a semi-sitting position (45–60 degrees) and may have knees either bent or straight. Variations in the angle are denoted by high Fowler , indicating an upright position at approximately 90 degrees and semi-Fowler , 30 to 45 degrees; and low Fowler ...
Focus first on a given k, emitting (phase) wavefronts whose stationary position w.r.t. the boat assemble to the standard shock wedge tangent to all of them, cf. Fig.12.3. As indicated above, the openings of these chevrons vary with wavenumber, the angle θ between the phase shock wavefront and the path of the boat (the water) being θ = arcsin ...
A flying wedge (also called flying V or wedge formation, or simply wedge) is a configuration created from a body moving forward in a triangular formation. This V-shaped arrangement began as a successful military strategy in ancient times when infantry units would move forward in wedge formations to smash through an enemy's lines.
The single standard watch of 4 hours (two double hours) was divided into 60 time-degrees (ush). One double hour had 30, and one complete stellar day, 360 (12 times 30). [19] This assignment was the creation of the 360-degree circle, as the degree went from being a time division to an angular distance of rotation.