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Pumped Storage Hydroelectric Project
Pumping may refer to: * The operation of a pump, for moving a liquid from one location to another **The use of a breast pump for extraction of milk * Pumping (audio), a creative misuse of dynamic range compression * Pumping (computer systems), the number of times data is transmitted per clock cycle * Pumping (oil well), injecting chemicals into a wellbore * Pumping (noise reduction), an unwanted artifact of some noise reduction systems * Pumping lemma, in the theory of formal languages * Gastric lavage, cleaning the contents of the stomach * Optical pumping Optical pumping is a process in which light is used to raise (or "pump") electrons from a lower energy level in an atom or molecule to a higher one. It is commonly used in laser construction to pump the active laser medium so as to achieve populat ..., in which light is used to raise electrons from a lower energy level to a higher one * Pump (skateboarding), accelerating without pushing off of the ground * "Pumping" (M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pump
A pump is a device that moves fluids ( liquids or gases), or sometimes slurries, by mechanical action, typically converted from electrical energy into hydraulic energy. Pumps can be classified into three major groups according to the method they use to move the fluid: ''direct lift'', ''displacement'', and ''gravity'' pumps. Mechanical pumps serve in a wide range of applications such as pumping water from wells, aquarium filtering, pond filtering and aeration, in the car industry for water-cooling and fuel injection, in the energy industry for pumping oil and natural gas or for operating cooling towers and other components of heating, ventilation and air conditioning systems. In the medical industry, pumps are used for biochemical processes in developing and manufacturing medicine, and as artificial replacements for body parts, in particular the artificial heart and penile prosthesis. When a casing contains only one revolving impeller, it is called a single-stage ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Breast Pump
A breast pump is a mechanical device that lactating women use to extract milk from their breasts. They may be manual devices powered by hand or foot movements or automatic devices powered by electricity. History On June 20, 1854, the United States Patent Office issued Patent No. 11,135 to O.H. Needham for a breast pump. ''Scientific American'' (1863) credits L.O. Colbin as the inventor and patent applicant of a breast pump. In 1921–23, engineer and chess master Edward Lasker produced a mechanical breast pump that imitated an infant's sucking action and was regarded by physicians as a marked improvement on existing hand-operated breast pumps, which failed to remove all the milk from the breast. The U.S. Patent Office issued for Lasker's breast pump. In 1956 Einar Egnell published his groundbreaking work, "Viewpoints on what happens mechanically in the female breast during various methods of milk collection". This article provided insight into the technical aspects of milk ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pumping (audio)
In audio, recording, and music, pumping or gain pumping is a creative misuse of compression, the "audible unnatural level changes associated primarily with the release of a compressor." There is no ''correct'' way to produce pumping, and according to Alex Case, the effect may result from selecting "too slow or too fast...or too, um, medium" attack and release settings.Case, Alex (2007). ''Sound FX'', p.160. Focal Press. Cited in Hodgson (2010), p.81. The technique is common in rock and electronic dance music. A celebrated example is Phil Selway's ( Radiohead) drum track on " Exit Music (For a Film)", and clear examples include the electro percussion loop in Radiohead's " Idioteque", Benny Benassi's "Finger Food", and the ride cymbals on Portishead's "Pedestal". Side-chain pumping is a more advanced technique using a compressor's ''side-chain'' feature which, "uses the amplitude envelope (dynamics profile) of one track as a trigger for a compressor used in another track." Wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pumping (computer Systems)
Pumping, when referring to computer systems, is an informal term for transmitting a data signal more than one time per clock signal. Overview Early types of system memory ( RAM), such as SDRAM, transmitted data on only the rising edge of the clock signal. With the advent of ''double data rate synchronous dynamic RAM'' or DDR SDRAM, the data was transmitted on both rising and falling edges. However, quad-pumping has been used for a while for the front-side bus (FSB) of a computer system. This works by transmitting data at the rising edge, peak, falling edge, and trough of each clock cycle. Intel computer systems (and others) use this technology to reach effective FSB speeds of 1600 MT/s (million transfers per second), even though the FSB clock speed is only 400 MHz (cycles per second). A phase-locked loop in the CPU then multiplies the FSB clock by a factor in order to get the CPU speed. Example: A Core 2 Duo E6600 processor is listed as 2.4 GHz with a 1066&nb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pumping (oil Well)
In the context of oil wells, pumping is a routine operation involving injecting fluids into the well. Pumping may either be done by rigging up to the kill wing valve on the Xmas tree or, if an intervention rig up is present pumping into the riser through a T-piece (a small section of riser with a connection on the side). Pumping is most routinely done to protect the well against scale and hydrates through the pumping of scale inhibitors and methanol. Pumping of kill weight brine may be done for the purposes of well kills and more exotic chemicals may be pumped from surface for cleaning the lower completion or stimulating the reservoir (though these types are jobs are more frequently done with coiled tubing for extra precision). Importance of knowing quantity Work involving wells is fraught with difficulties as there is often very little information about the real time condition of the completion. This lack of knowledge also covers potential damage and even loss of well integri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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