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Hematology. Hereditary pyropoikilocytosis (HPP) is an autosomal recessive form of hemolytic anemia characterized by an abnormal sensitivity of red blood cells to heat and erythrocyte morphology similar to that seen in thermal burns or from prolonged exposure of a healthy patient's blood sample to high ambient temperatures.
Hypophosphatasia (/ ˌhaɪpoʊˈfɒsfeɪtˌeɪʒə /; also called deficiency of alkaline phosphatase, phosphoethanolaminuria, [ 5 ] or Rathbun's syndrome; [ 1 ] sometimes abbreviated HPP[ 6 ]) is a rare, and sometimes fatal, inherited [ 7 ] metabolic bone disease. [ 8 ] Clinical symptoms are heterogeneous, ranging from the rapidly fatal ...
Manning formula. The Manning formula or Manning's equation is an empirical formula estimating the average velocity of a liquid in an open channel flow (flowing in a conduit that does not completely enclose the liquid). However, this equation is also used for calculation of flow variables in case of flow in partially full conduits, as they also ...
Tetrakis (hexahydropyrimidinopyrimidine)ditungsten (II), known as ditungsten tetra (hpp), is the name of the coordination compound with the formula W 2 (hpp) 4. This material consists of a pair of tungsten centers linked by the conjugate base of four hexahydropyrimidopyrimidine (hpp) ligands. It adopts a structure sometimes called a Chinese ...
Hypothalamic–pituitary hormones are hormones that are produced by the hypothalamus and pituitary gland. Although the organs in which they are produced are relatively small, the effects of these hormones cascade throughout the body. They can be classified as a hypothalamic–pituitary axis (HP axis) of which the adrenal (HPATooltip ...
Pore water pressure (sometimes abbreviated to pwp) refers to the pressure of groundwater held within a soil or rock, in gaps between particles (pores). Pore water pressures below the phreatic level of the groundwater are measured with piezometers. The vertical pore water pressure distribution in aquifers can generally be assumed to be close to ...
A triangle with sides a, b, and c. In geometry, Heron's formula (or Hero's formula) gives the area of a triangle in terms of the three side lengths Letting be the semiperimeter of the triangle, the area is 1. It is named after first-century engineer Heron of Alexandria (or Hero) who proved it in his work ...
For a hammer powered by water, see Trip hammer. Effect of a pressure surge on a float gauge. Hydraulic shock (colloquial: water hammer; fluid hammer) is a pressure surge or wave caused when a fluid in motion is forced to stop or change direction suddenly: a momentum change. It is usually observed in a liquid but gases can also be affected.