low-flow channel
41100-year flood — For other uses, see 100 year flood (disambiguation). A one hundred year flood is calculated to be the level of flood water expected to be equaled or exceeded every 100 years on average. The 100 year flood is more accurately referred to as the 1%… …
42Mechanical fan — Household electric box fan with a propeller style blade A mechanical fan is a machine used to create flow within a fluid, typically a gas such as air. A fan consists of a rotating arrangement of vanes or blades which act on the air. Usually, it… …
43Fox-Wisconsin Waterway — The Fox Wisconsin Waterway is a waterway formed by the Fox and Wisconsin Rivers. First used by European settlers in 1673 during the expedition of Marquette Joliet, it was one of the principal routes used by travelers between the Great Lakes and… …
44turbine — /terr bin, buyn/, n. any of various machines having a rotor, usually with vanes or blades, driven by the pressure, momentum, or reactive thrust of a moving fluid, as steam, water, hot gases, or air, either occurring in the form of free jets or as …
45continental landform — ▪ geology Introduction any conspicuous topographic feature on the largest land areas of the Earth. Familiar examples are mountains (including volcanic (volcanism) cones), plateaus, and valleys. (The term landform also can be applied to… …
46Brahmaputra River — Coordinates: 25°13′24″N 89°41′41″E / 25.22333°N 89.69472°E / 25.22333; 89.69472 …
47Monolithic HPLC column — A monolithic HPLC column is a special type of column used in HPLC with porous channels rather than beads. High performance liquid chromatography (HPLC) is the third most widely used laboratory instrument, surpassed only by analytical balances and …
48Sewage treatment — The objective of sewage treatment is to produce a disposable effluent without causing harm to the surrounding environment, and also prevent pollution.[1] Sewage treatment, or domestic wastewater treatment, is the process of removing contaminants… …
49Porosity — or void fraction is a measure of the void (i.e., empty ) spaces in a material, and is a fraction of the volume of voids over the total volume, between 0–1, or as a percentage between 0–100%. The term is used in multiple fields including… …
50Yangtze River — Chinese Chang Jiang or Ch ang Chiang River, China. Rising in the eastern Kunlun Mountains in western China, it flows southeast, continuing east across Yunnan province and then across the rest of south central China to the East China Sea near… …
