NASDAQ-100
The NASDAQ-100 (^NDX) is a stock market index made up of 107 equity securities issued by 100 of the largest non-financial companies listed on the NASDAQ. It is a modified capitalization-weighted index. The stocks' weights in the index are based on their market capitalizations, with certain rules capping the influence of the largest components. It is based on exchange, and it is not an index of U.S.-based companies. It does not have any financial companies, since these were put in a separate index. Both of those criteria differentiate it from the Dow Jones Industrial Average, and the exclusion of financial companies distinguishes it from the S&P 500.
History
The NASDAQ-100 began on January 31, 1985 by the NASDAQ, trying to promote itself in the shadow of the New York Stock Exchange. It did so by creating two separate indices: this index, which consists of Industrial, Technology, Retail, Telecommunication, Biotechnology, Health Care, Transportation, Media and Service companies, and the NASDAQ Financial-100, which consists of banking companies, insurance firms, brokerage houses and mortgage companies. By creating these two indices, the NASDAQ hoped that options and futures contracts would be created on them, and mutual funds would adopt them as their benchmarks.
Diadenosine hexaphosphate hydrolase (ATP-forming)
Diadenosine hexaphosphate hydrolase (ATP-forming) (EC 3.6.1.61, Ndx1) is an enzyme with system name P1,P6-bis(5'-adenosyl)hexaphosphate nucleotidohydrolase (ATP-forming). This enzyme catalyses the following chemical reaction
The enzyme requires the presence of the divalent cations (Mn2+, Mg2+, Zn2+, and Co2+).
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Barrow
Barrow may refer to:
Places
United Kingdom
- Borough of Barrow-in-Furness, local authority encompassing the wider area
- Barrow and Furness, UK parliament constituency
United States
The Moon
People
Art, entertainment, and media
Sports
Other uses
Barrow (Lake District)
Barrow is small fell in the English Lake District in the county of Cumbria which reaches a height of 455 metres (1,494 feet). It is situated in the quiet and picturesque Newlands Valley just 4 kilometres south west of the town of Keswick. Although modest in height, Barrow commands a fine all round view, with the vales of Keswick and Newlands being well seen. The name of the fell originates from the Anglo Saxon language meaning a hill or long ridge.
Topography
Barrow is a slender ridge climbing south west from Braithwaite. At the summit it turns due west across the depression of Barrow Door, diverted by the valley of Stonycroft Gill. Beyond the col are Stile End and Outerside. The valley of Coledale lies to the north west and Newlands Beck forms the eastern boundary.
Ascents
Ascents of the fell are usually started from either the Newlands Valley or Braithwaite, both giving an enjoyable short ramble which can be combined with the adjoining higher fell of Outerside. The climb from Newlands starts at the hamlet of Stair and utilises an old mine road up Stonycroft Gill up to a height of 350 metres before veering back east to attain the summit. There are two paths from Braithwaite, one follows the northern ridge of the fell while the other approaches up the valley of Barrow Gill.
Tumulus
A tumulus (plural tumuli) is a mound of earth and stones raised over a grave or graves. Tumuli also are known as barrows, burial mounds, or kurgans, and may be found throughout much of the world. A cairn, which is a mound of stones built for various purposes, might also originally have been a tumulus.
Tumuli are often categorized according to their external apparent shape. In this respect, a long barrow is a long tumulus, usually constructed on top of several burials, such as passage graves. A round barrow is a round tumulus, also commonly constructed on top of burials. The internal structure and architecture of both long and round barrows has a broad range, the categorization only refers to the external apparent shape.
The method of inhumation may involve a dolmen, a cist, a mortuary enclosure, a mortuary house, or a chamber tomb. Examples of barrows include Duggleby Howe and Maeshowe.
The word tumulus is Latin for 'mound' or 'small hill', which is derived from the Proto-Indo-European root *teuh2- with extended zero grade *tum-, 'to bulge, swell' also found in tumor, thumb, thigh, and thousand.
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