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Delta Delta Delta. Delta Delta Delta ( ΔΔΔ ), also known as Tri Delta, is a global [2] women's fraternity and Greek life organization founded on November 27, 1888 at Boston University by Sarah Ida Shaw, Eleanor Dorcas Pond, Isabel Morgan Breed, and Florence Isabelle Stewart. With over 200,000 living initiates at 141 chapters and over $450M ...
Delta IV was a group of five expendable launch systems in the Delta rocket family introduced in the early 2000s. Originally designed by Boeing 's Defense, Space and Security division for the Evolved Expendable Launch Vehicle (EELV) program, the Delta IV became a United Launch Alliance (ULA) product in 2006. The Delta IV was primarily a launch ...
Delta ratio. Delta ratio, or " delta-delta ", is a formula that can be used to assess elevated anion gap metabolic acidosis and to evaluate whether a mixed acid–base disorder ( metabolic acidosis) is present. The anion gap (AG) without potassium is calculated first and if a metabolic acidosis is present, results in either a high anion gap ...
In thermal engineering, the logarithmic mean temperature difference ( LMTD) is used to determine the temperature driving force for heat transfer in flow systems, most notably in heat exchangers. The LMTD is a logarithmic average of the temperature difference between the hot and cold feeds at each end of the double pipe exchanger.
Delta operates the world's largest fleets of the Airbus A220, Boeing 717, and Boeing 757, the largest passenger fleet of the Boeing 767, and the largest Airbus A330 fleet of any US airline. Delta has historically preferred purchasing or leasing used aircraft or using older-generation models to keep initial acquisition costs down.
Delta N. The Delta N or Thor-Delta N was an American expendable launch system used for nine orbital launches between 1968 and 1972. It was a member of the Delta family of rockets, and the last Delta to be given an alphabetical designation - subsequent rockets were designated using a four digit numerical code . The Delta N consisted of two stages.
Survivors. 78. Delta Air Lines Flight 1989 was a regularly scheduled flight offering nonstop morning service on September 11, 2001, from Logan International Airport to Los Angeles International Airport on a Boeing 767-300ER aircraft. This flight was one of several flights considered as possibly hijacked, but landed safely at Cleveland Hopkins ...
Satellite image of the Amazon Delta captured by NASA in 2005. NASA satellite photograph of the Nile Delta (shown in false color) A river delta is a landform shaped like a triangle, created by the deposition of sediment that is carried by a river and enters slower-moving or stagnant water. [1] [2] This occurs at a river mouth, when it enters an ...