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Synthetic-based fluid poses the same environmental and analysis problems as oil-based fluid. [ 7 ] On a drilling rig , mud is pumped from the mud pits through the drill string, where it jets out of nozzles on the drill bit, thus clearing away cuttings and cooling the drill bit in the process.
When filling the workspace of the pumping pistons from "inside" (e.g., over a hollow shaft) it is called an inside impinged (but outside braced) radial piston pump (picture 1). If the workspace is filled from "outside" it's called an outside impinged radial piston pump (but inside braced) (picture 2) .
In light of concerns about food security, human population growth and dwindling land suitable for agriculture, sustainable intensive farming practises are needed to maintain high crop yields, while maintaining soil health and ecosystem services. The capacity for ecosystem services to be strong enough to allow a reduction in use of non-renewable ...
[W 20] "New pages patrol" is a process where newly created articles are checked for obvious problems. [ W 21 ] In 2003, economics PhD student Andrea Ciffolilli argued that the low transaction costs of participating in a wiki created a catalyst for collaborative development, and that features such as allowing easy access to past versions of a ...
Leonard Peltier (born September 12, 1944) is a Native American activist and a member of the American Indian Movement (AIM) who was convicted of two counts of first degree murder in the deaths of two Federal Bureau of Investigation (FBI) agents in a June 26, 1975, shooting on the Pine Ridge Indian Reservation in South Dakota.
Unit 731 (Japanese: 731部隊, Hepburn: Nana-san-ichi Butai), [note 1] short for Manchu Detachment 731 and also known as the Kamo Detachment [3]: 198 and the Ishii Unit, [5] was a covert biological and chemical warfare research and development unit of the Imperial Japanese Army that engaged in lethal human experimentation and biological weapons manufacturing during the Second Sino-Japanese War ...
[77] [79] After this, he became qualified for many types of aircraft, from single-engined light aircraft to multiengine jets. [ 20 ] [ 9 ] [ 77 ] [ 80 ] Kaye received a type rating in a Learjet , and he was named vice president of the Learjet Company by Bill Lear as an honorary title (he had no line responsibility at the company). [ 81 ]
US Airways Flight 1549 was a regularly scheduled US Airways flight from New York City's LaGuardia Airport to Charlotte and Seattle, in the United States.On January 15, 2009, the Airbus A320 serving the flight struck a flock of birds shortly after takeoff from LaGuardia, losing all engine power.