WordNet

increase by a factor of two; "doubling with a computer took no time at all"
raising the stakes in a card game by a factor of 2; "I decided his double was a bluff" (同)double

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2016/07/25 21:53:00」(JST)

Doubling may refer to:

Multiplication by 2
100% increase
Doubling the cube, a geometric problem
Doubling time, the period of time required for a quantity to double in size or value
Doubling map
Period-doubling bifurcation

The composition or performance of a melody with itself or itself transposed at a constant interval such as the octave, third, or sixth, Voicing (music)#Doubling
The assignment of a melody to two instruments in an arrangement
The playing of two (or more) instruments alternately by a single player, e.g. Flute, doubling piccolo
- Musicians who play more than one woodwind instrument are called Woodwind Doublers or Reed Players
Doubletracking, a recording technique in which a musical part (or vocal) is recorded twice and mixed together, to strengthen or "fatten" the tone.

Doubling (psychodrama) is a technique of provoking a protagonist by a participant, for effect.
Doubling in the theatre is where one actor plays more than one part in the same performance.
Doubling (textiles) is the process where six slivers of cotton are fed into a draw frame, stetched and together to improve the uniformity of the roving before it is spun
Doubling (naval tactic) was a means of focusing gunfire in formations of sailing warships maneuvering as a line of battle.
Double knitting is the process of combining two or more lengths of yarn into a single thread.
Doubling in two-way radio, where two or more transmitters transmit at once on the same frequency, interfering with one another and garbling all messages.
Syntactic doubling is a phenomenon consisting in the lengthening (gemination) of the initial consonant of certain words
When more than one round is fired in a semiautomatic gas powered rifle with only one pull of the trigger, also known as a slam fire.

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Fate, distribution, and contrasting temporal trends of perfluoroalkyl substances (PFASs) in Lake Ontario, Canada.

Myers AL, Crozier PW, Helm PA, Brimacombe C, Furdui VI, Reiner EJ, Burniston D, Marvin CH.SourceOntario Ministry of the Environment, 125 Resources Road, Toronto, Ontario, Canada. anne.myers@ontario.ca
Environment international.Environ Int.2012 Sep;44:92-9. Epub 2012 Mar 9.
Lake Ontario water and sediment collected from tributary, nearshore, and open lake sites were analyzed for perfluoroalkyl substances (PFASs), namely perfluoroalkyl carboxylic acids (PFCAs, F(CF(2))(n)CO(2)(-); n=6-11,13) and perfluoroalkane sulfonic acids (PFSAs, F(CF(2))(n)SO(3)(-); n=6,8,10). Surv
PMID 22406021

Reduction of misleading ("false") positive results in mammalian cell genotoxicity assays. II. Importance of accurate toxicity measurement.

Fowler P, Smith R, Smith K, Young J, Jeffrey L, Kirkland D, Pfuhler S, Carmichael P.SourceUnilever, Safety and Environmental Assurance Centre, Colworth Science Park, Sharnbrook, Bedfordshire MK44 1LQ, UK; Covance Laboratories Limited, Otley Road, Harrogate HG3 1PY, UK.
Mutation research.Mutat Res.2012 Aug 30;747(1):104-17. Epub 2012 May 15.
In a previous publication, Fowler et al. [4] demonstrated that the seemingly high rate of false or misleading positive results obtained in in vitro cytogenesis assays for genotoxicity - when compared with in vivo genotoxicity or rodent carcinogenicity data - was greater when rodent cell lines were u
PMID 22595317

de Fine Licht S, Schmidt LS, Rod NH, Schmiegelow K, Lähteenmäki PM, Kogner P, Träger C, Stokland T, Schüz J.SourceInstitute of Cancer Epidemiology, Danish Cancer Society, Copenhagen, Denmark. sofielie@cancer.dk.
International journal of cancer. Journal international du cancer.Int J Cancer.2012 Aug 15;131(4):E555-61. doi: 10.1002/ijc.27351. Epub 2012 Jan 3.
Little is known about the etiology of hepatoblastoma. Because of the young age at diagnosis, several studies have looked at various birth characteristics. The purpose of our study was to investigate the incidence of hepatoblastoma in the Nordic countries and the association between selected birth ch
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Evaluation of thermal resistance of carbon nanotube film fabricated using an improved slope control of temperature profile growth

Kawabata Akio,Murakami Tomo,Nihei Mizuhisa,Yamabe Kikuo,Yokoyama Naoki
Jpn. J. Appl. Phys. 54(4), 045101, 2015-03-06
… We succeeded in doubling the CNT density over the conventional method by optimizing the raw material supply and temperature slope during the reaction-limited and supply-limited periods. …
NAID 150000110509

A cavity-dumped and regenerative amplifier system for generating high-energy, high-repetition-rate picosecond pulses

Peng ZhiGang,Chen Meng,Yang Chao,Chang Liang,Li Gang
Jpn. J. Appl. Phys. 54(2), 028001, 2015-01-08
… After frequency doubling, 0.5 mJ pulses are obtained with a wavelength of 532 nm. …
NAID 150000110151

HONDA Aoi,OKAZAKI Yoshiaki,SATO Hiroshi
Kyushu Journal of Mathematics 69(1), 173-194, 2015
… In this paper we name Λp(f) a Shepp space and discuss the problems in the case of p = 2 by defining an inner approximation Λ02(f) and an outer approximation Λφ2(f) of Λ2(f), and we give a necessary and sufficient condition for Λ02(f) = Λφ2(f) in terms of doubling dimension. …
NAID 130005076155