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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 ...
Hydraulic roughness is the measure of the amount of frictional resistance water experiences when passing over land and channel features. [1] One roughness coefficient is Manning's n-value. [2] Manning's n is used extensively around the world to predict the degree of roughness in channels. Flow velocity is strongly dependent on the resistance to ...
Manning is from an old Norse word — manningi — meaning a brave or valiant man; and one of the first forms of the name was Mannin; another cartography was Mannygn. [1] One historian gives a Saxon origin for the family, which he calls "ancient and noble". According to him, Manning was the name of a town in Saxony, and from it the surname sprang.
Robert Manning (22 October 1816 – 9 December 1897) was an Irish hydraulic engineer best known for creation of the Manning formula. Manning was born in Normandy, France, the son of a soldier who had fought the previous year at the Battle of Waterloo. In 1826 he moved to Waterford, Ireland and in time worked as an accountant.
Biophysical profile. A biophysical profile (BPP) is a prenatal ultrasound evaluation of fetal well-being involving a scoring system, [1] with the score being termed Manning's score.[2] It is often done when a non-stress test (NST) is non reactive, or for other obstetrical indications. The "modified biophysical profile" consists of the NST and ...
Counterion condensation. Counterion condensation is a phenomenon described by Manning's theory (Manning 1969), which assumes that counterions can condense onto polyions until the charged density between neighboring monomer charges along the polyion chain is reduced below a certain critical value. In the model the real polyion chain is replaced ...
Manning's formula is a modified Chézy formula that combines many of his aforementioned contemporaries' work. [ 6 ] [ 7 ] Manning's modifications to the Chézy formula allowed the entire similarity parameter to be calculated by channel characteristics rather than by experimental measurements. [ 1 ]
Manning rule. The term Manning rule is the informal name for a financial industry rule in the United States: Financial Industry Regulatory Authority (FINRA) regulation, Rule 5320. It prohibits a FINRA member firm from placing the firm's interest before/above the financial interests of a client. For example, when a securities firm is holding a ...