high-density systems
1High-density polyethylene — HDPE has SPI resin ID code 2 High density polyethylene (HDPE) or polyethylene high density (PEHD) is a polyethylene thermoplastic made from petroleum. It takes 1.75 kilograms of petroleum (in terms of energy and raw materials) to make one… …
2High Density DVD — Speichermedium HD DVD Allgemeines Typ Optisches Speichermedium Kapazität 15 GB[1] (Single Layer), 30 GB (Dual Layer), 51 GB (dreilagig, 17 GB pro Schich …
3Video High Density — (VHD) is a videodisc format which was marketed predominantly in Japan by JVC. There was also an audio only variant, Audio High Density (AHD). Technology VHD discs are 25cm (9 5/6 inches) in diameter, though the user never sees them as they are… …
4High-speed rail — is a type of passenger rail transport that operates significantly faster than the normal speed of rail traffic. Specific definitions include 200 km/h (124 mph) and faster depending on whether the track is upgraded or new by the European Union,… …
5Systems Engineering Laboratories — (also called SEL) was a manufacturer of minicomputers in Fort Lauderdale, Florida. It was one of the first 32 bit realtime computer system manufacturers. Realtime computers are used for process control and monitoring; to accommodate these… …
6High-temperature superconductivity — Unsolved problems in physics What causes superconductivity at temperatures above 50 kelvin? High temperature superconductors (abbreviated high Tc or HTS) are materials that have a superconducting transition temperature (Tc) above 30 K… …
7High-occupancy vehicle lane — HOV redirects here. For other uses, see HOV (disambiguation). A permanent, separated high occupancy vehicle lane on I 91 near Hartford, Connecticut …
8High Voltage Differential — Das Small Computer System Interface (SCSI, gesprochen [ˈskʌzi][1]) ist eine standardisierte parallele Schnittstelle für die Verbindung und Datenübertragung zwischen Peripheriegeräten und dem Computer Bus. Im Vergleich zu ATA/ATAPI ist ein… …
9High-performance liquid chromatography — An HPLC. From left to right: A pumping device generating a gradient of two different solvents, a steel enforced column and an apparatus for measuring the absorbance. Acronym HPLC Classification Chromatography …
10High-speed rail in Europe — High speed rail is emerging in Europe as an increasingly popular and efficient means of transportation. The first high speed rail lines in Europe, built in the 1980s and 1990s, improved travel times on intra national corridors. Since then,… …
