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PDMS
PDMS may refer to: * Palm Desert Middle School, a middle school in Palm Desert, California * Plant Design Management System * Plasma desorption mass spectrometry * Point-Defence Missile System * Polydimethylsiloxane, a silicon-based organic polymer {{disambig ja:艦対空ミサイル#個艦防空ミサイル ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polydimethylsiloxane
Polydimethylsiloxane (PDMS), also known as dimethylpolysiloxane or dimethicone, belongs to a group of polymeric organosilicon compounds that are commonly referred to as silicones. PDMS is the most widely used silicon-based organic polymer, as its versatility and properties lead to many applications. It is particularly known for its unusual rheological (or flow) properties. PDMS is optically clear and, in general, inert, non-toxic, and non-flammable. It is one of several types of silicone oil (polymerized siloxane). Its applications range from contact lenses and medical devices to elastomers; it is also present in shampoos (as it makes hair shiny and slippery), food (antifoaming agent), caulk, lubricants and heat-resistant tiles. Structure The chemical formula of PDMS is , where ''n'' is the number of repeating monomer units.Mark, J. E.; Allcock, H. R.; West, R. “Inorganic Polymers” Prentice Hall, Englewood, NJ: 1992. . Industrial synthesis can begin from dimethyldichloro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plant Design Management System
PDMS (Plant Design Management System) as it is known in the 3D CAD industry, is a customizable, multi-user and multi-discipline, engineer controlled design software package for engineering, design and construction projects in offshore and onshore. The Computer-Aided Design Centre (or CADCentre as it was more commonly referred to, and later formally became) was created in Cambridge, England, UK in 1967 by the UK Ministry of Technology. Its mission was to develop computer-aided design techniques and promote their take-up by British industry. The centre carried out much pioneering CAD research, and many of its early staff members went on to become prominent in the worldwide CAD community, such as brothers Dick Newell and Martin Newell. Dick Newell oversaw the creation of the Plant Design Management System (PDMS) for 3D process plant design. He later co-founded two software companies – Cambridge Interactive Systems (CIS) which was known for its Medusa 2D/3D CAD system, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plasma Desorption Mass Spectrometry
An ion source is a device that creates atomic and molecular ions. Ion sources are used to form ions for mass spectrometers, optical emission spectrometers, particle accelerators, ion implanters and ion engines. Electron ionization Electron ionization is widely used in mass spectrometry, particularly for organic molecules. The gas phase reaction producing electron ionization is :M + e^- -> M^ + 2e^- where M is the atom or molecule being ionized, e^- is the electron, and M^ is the resulting ion. The electrons may be created by an arc discharge between a cathode and an anode. An electron beam ion source (EBIS) is used in atomic physics to produce highly charged ions by bombarding atoms with a powerful electron beam. Its principle of operation is shared by the electron beam ion trap. Electron capture ionization Electron capture ionization (ECI) is the ionization of a gas phase atom or molecule by attachment of an electron to create an ion of the form A−•. The reaction ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Palm Desert Middle School
The Desert Sands Unified School District (DSUSD) is a public school district with main offices located in La Quinta, California. The district was founded in 1964, after the California Department of Education consolidated all Indio public schools. As of 2017, DSUSD serves 28,958 students in Indio, La Quinta, Palm Desert, Indian Wells, Bermuda Dunes, and parts of Rancho Mirage and Coachella. History In the 1930s and 1940s, Indio Public Schools consisted of Washington, Roosevelt, Jackson, Lincoln and Hoover schools, with the Jefferson school the sole junior high-level facility. In 1966, voters approved the consolidation of the Indio Elementary School District and the Coachella Valley Joint Union High School District, with some smaller elementary districts, into one, 760 square mile, district called Desert Sands Unified School District. The district initially served about 6,600 students. In 2010, using funds provided by the Magnet Schools Assistance Program, two elementary school ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Point-Defence
Point defence (or point defense; see spelling differences) is the defence of a single object or a limited area, e.g. a ship, building or an airfield, now usually against air attacks and guided missiles. Point defence weapons have a smaller range in contrast to area-defence systems and are placed near or on the object to be protected. Point defence may include: * short-ranged interceptor aircraft * Close-in weapon systems on ship * land-based short-ranged anti-aircraft guns or surface-to-air missile systems * Active protection systems on tanks or other armoured fighting vehicles Coastal artillery to protect harbours is similar conceptually, but is generally not classified as point defence. Similarly, passive systems—electronic countermeasures, decoys, chaff, flares, barrage balloons—are not considered point defence. Examples * Bachem Ba 349 ''Natter'' – vertical take-off rocket powered crewed interceptor (prototypes only) * Messerschmitt Me 163 – World War II-era operati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parliamentary Document Management System
A parliamentary system, or parliamentarian democracy, is a system of democratic governance of a state (or subordinate entity) where the executive derives its democratic legitimacy from its ability to command the support ("confidence") of the legislature, typically a parliament, to which it is accountable. In a parliamentary system, the head of state is usually a person distinct from the head of government. This is in contrast to a presidential system, where the head of state often is also the head of government and, most importantly, where the executive does not derive its democratic legitimacy from the legislature. Countries with parliamentary systems may be constitutional monarchies, where a monarch is the head of state while the head of government is almost always a member of parliament, or parliamentary republics, where a mostly ceremonial president is the head of state while the head of government is regularly from the legislature. In a few parliamentary republics, among ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Permanent Downhole Monitoring System , Buddhist concept
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Permanent may refer to: Art and entertainment * ''Permanent'' (film), a 2017 American film * ''Permanent'' (Joy Division album) * "Permanent" (song), by David Cook Other uses *Permanent (mathematics), a concept in linear algebra *Permanent (cycling event) *Permanent wave, a hairstyling process See also *Permanence (other) *''Permanently'', a 2000 album by Mark Wills *Endless (other) *Eternal (other) *Forever (other) *Impermanence Impermanence, also known as the philosophical problem of change, is a philosophical concept addressed in a variety of religions and philosophies. In Eastern philosophy it is notable for its role in the Buddhist three marks of existence. It is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Profile Data Management System
Profile or profiles may refer to: Art, entertainment and media Music * ''Profile'' (Jan Akkerman album), 1973 * ''Profile'' (Githead album), 2005 * ''Profile'' (Pat Donohue album), 2005 * ''Profile'' (Duke Pearson album), 1959 * '' ''Profiles'' (Nick Mason and Rick Fenn album)'', a 1985 album by Nick Mason and Rick Fenn * ''Profiles'' (Gary McFarland album), a 1966 live album by Gary McFarland * ''Profile'' (Misako Odani album), 1997 * ''Profile'' (Wolfe Tones album) Film and television * ''Profile'' (2018 film), a film directed by Timur Bekmambetov * Profile (1954 film), British thriller film * ''Profile'' (1955 TV series) (1955–1957), a Canadian biographical television series * ''Profiles'' (TV series) (1979–1980), a Canadian biographical television series * ''Profile'' (2018 TV series), an American streaming television talk show Other art, entertainment and media * Profile (Marvel Comics), a Marvel Comics character * ''Profile'' (novel), a 2009 novel by Chri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
