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Total number portability. Total number portability exists in Chile, so users can freely move from one service provider to another without losing their number, regardless of connection technology, whether land-line, mobile or VoIP. Therefore, a number beginning with "8" or "9" no longer denotes that it is a mobile phone number.
The Richardson number ( Ri) is named after Lewis Fry Richardson (1881–1953). [1] It is the dimensionless number that expresses the ratio of the buoyancy term to the flow shear term: [2] where is gravity, is density, is a representative flow speed, and is depth. The Richardson number, or one of several variants, is of practical importance in ...
This is a discussion of telephone numbers in Ukraine. The nation of Ukraine has country code +380. It switched to the European Union 's common dialing plan in 2009. Thus, Ukrainian phone numbers consist of a 2-digit zone code, an optional subzone code, an optional filler (zero to two "2 " 's), and the local phone number (five to seven digits).
Mobile telephone numbers. [1] [2] In Vietnam, mobile phone numbers follow the format 09x-xxxxxxx or new prefixes: 03x, 05x, 07x, 08x. The first 0 is the trunk code. The next 2 digits ( 3x, 5x, 7x, 8x or 9y) specify the mobile phone operator. Some mobile phone operators have been given more than one operator code. In Circular No. 22/2014/TT ...
The Reynolds number is the ratio of inertial forces to viscous forces within a fluid that is subjected to relative internal movement due to different fluid velocities. A region where these forces change behavior is known as a boundary layer, such as the bounding surface in the interior of a pipe.
When calling a Taiwan mobile phone number from outside of Taiwan, the 0 of 09X is omitted (e.g. +886 921234567). Format: (09X)XXXXXXX Mobile Phones with 090 range is mostly used for wireless data services (M2M). Toll-free and premium rate. Toll-free numbers begin with the prefix 0800 and 0809. Numbers in the 020x prefix are used for value-added ...
The Prandtl number ( Pr) or Prandtl group is a dimensionless number, named after the German physicist Ludwig Prandtl, defined as the ratio of momentum diffusivity to thermal diffusivity. [1] The Prandtl number is given as: where: ν {\displaystyle u } : momentum diffusivity ( kinematic viscosity ),
The Shannon number, named after the American mathematician Claude Shannon, is a conservative lower bound of the game-tree complexity of chess of 10 120, based on an average of about 10 3 possibilities for a pair of moves consisting of a move for White followed by a move for Black, and a typical game lasting about 40 such pairs of moves.