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  • High-Energy Accelerators and Colliders  (1)
  • MECHANICAL ENGINEERING  (1)
  • repetitive element  (1)
  • retrotransposon  (1)
Collection
Keywords
Publisher
Years
  • 1
    Electronic Resource
    Electronic Resource
    Ty1-copia-retrotransposon Behavior in a Polyploid Cotton (2000)
    Springer
    Chromosome research 8 (2000), S. 73-76 
    Details
    ISSN: 1573-6849
    Keywords: evolution ; genome ; Gossypium ; polyploidization ; repetitive element ; retrotransposon
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Retrotransposons constitute a ubiquitous and dynamic component of plant genomes. Intragenomic and intergenomic comparisons of related genomes offer potential insights into retrotransposon behavior and genomic effects. Here, we have used fluorescent in-situ hybridization to determine the chromosomal distributions of a Ty1-copia-like retrotransposon in the cotton AD-genome tetraploid Gossypium hirsutum and closely related putative A- and D-genome diploid ancestors. Retrotransposon clone A108 hybridized to all G. hirsutum chromosomes, approximately equal in intensity in the A- and D-subgenomes. Similar results were obtained by hybridization of A108 to the A-genome diploid G. arboreum, whereas no signal was detected on chromosomes of the D-genome diploid G. raimondii. The significance and potential causes of these observations are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1009239522541
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    Paper (German National Licenses)
    Fulltext
  • 2
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    Unknown
    Conceptual design and modeling of a six-dimensional bunch merging scheme for a muon collider (2016)
    American Physical Society (APS)
    Details
    Publication Date: 2016-03-10
    Description: Author(s): Yu Bao, Gail Hanson, Robert B. Palmer, and Diktys Stratakis A high luminosity muon collider requires single, intense, muon bunches with small emittances: just one of each sign. An efficient front end and a cooling channel have been designed and simulated within the collaboration of the Muon Accelerator Program. The muons are first bunched and phase rotated i… [Phys. Rev. Accel. Beams 19, 031001] Published Wed Mar 09, 2016
    Keywords: High-Energy Accelerators and Colliders
    Electronic ISSN: 1098-4402
    Topics: Physics
    Published by American Physical Society (APS)
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    PAPER CURRENT
  • 3
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    Unknown
    On the design and development of a miniature ceramic gimbal bearing (1990)
    In:  CASI
    Details
    Publication Date: 2013-08-31
    Description: A review is made of a program to develop ceramic gimbal bearings for a miniaturized missile guidance system requiring nonmagnetic properties and higher load capacity than possible with conventional AISI 440C stainless steel bearings. A new gimbal design concept is described which utilizes the compressive strength and nonmagnetic properties of silicon nitride (Si3N4) ceramics for the gimbal bearing. Considerable manufacturing development has occurred in the last 5 years making ceramic bearings a viable option in the gimbal design phase. A preliminary study into the feasibility of the proposed design is summarized. Finite element analysis of the brittle ceramic bearing components under thermal stress and high acceleration loading were conducted to ensure the components will not fail catastrophically in service. Finite element analysis was also used to optimize the adhesive joint design. Bearing torque tests run at various axial loads indicate that the average running torque of ceramic bearings varies with load similarly to that of conventional steel bearings.
    Keywords: MECHANICAL ENGINEERING
    Type: NASA, John F. Kennedy Space Center, The 24th Aerospace Mechanisms Symposium; p 289-300
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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