Quadruplex may refer to:
*
Quadruplex (New Orleans)
City Park, a public park in New Orleans, Louisiana, is the 87th largest and 20th-most-visited urban public park in the United States. City Park is approximately 50% larger than Central Park in New York City, the municipal park recognized by Ame ...
, a softball complex in New Orleans City Park
*
Quadruplex telegraph
The Quadruplex telegraph is a type of electrical telegraph which allows a total of four separate signals to be transmitted and received on a single wire at the same time (two signals in each direction). Quadruplex telegraphy thus implements a fo ...
, an improvement on the electrical telegraph patented in 1874 by Thomas Edison
* Two-inch
quadruplex videotape
2-inch quadruplex videotape (also called 2" quad video tape or quadraplex) was the first practical and commercially successful analog recording video tape format. The format uses magnetic tape and was developed and released for the broadcast t ...
, the first practical and commercially successful videotape format
*
G-quadruplex
In molecular biology, G-quadruplex secondary structures (G4) are formed in nucleic acids by sequences that are rich in guanine. They are helical in shape and contain guanine tetrads that can form from one, two or four strands. The unimolecular ...
, a four-stranded nucleic acid structure rich in guanine
* C-quadruplex, a four-stranded nucleic acid structure rich in cytosine, found in
I-motif DNA
i-motif DNA, short for intercalated-motif DNA, are cytosine-rich four-stranded quadruplex DNA structures, similar to the G-quadruplex structures that are formed in guanine-rich regions of DNA.
History
This structure was first discovered in 1993 ...
* Quadruplex, a building split into four apartments, similar to a
duplex
*
Quadruplex locomotive
A multiplex locomotive is a steam locomotive that Divided drive (locomotive), divides the driving force on its wheels by using multiple pairs of cylinders to drive multiple driving wheel set groups. Such a locomotive will necessarily articulated lo ...
, a locomotive with four sets of driving wheels
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