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  • 1
    Electronic Resource
    Electronic Resource
    Induced recombination and reversion of theCDC8 gene in relation to the cell cycle of yeast (1988)
    Springer
    Current genetics 13 (1988), S. 455-460 
    Details
    ISSN: 1432-0983
    Keywords: Yeast ; Gene conversion and mutation ; CDC8 locus ; Cell cycle
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The induction of mitotic recombination in theCDC8 locus was studied in a diploid strain heteroallelic forcdc8 mutations (cdc8-1/cdc8-3); mitotic reversion was studied in strainscdc8-1/cdc8-1 andcdc8-3/cdc8-3. Conversion and reversion did not occur in those cells blocked at the S stage of the cell cycle by exposure to a nonpermissive temperature. In stationary phase cells irradiated just prior to exposure to temperature stress, the induction of recombinants was rather low and the induction of revertants was minimal. Conversely, a significant induction ofcdc + occurred in logarithmic phase cells subjected to the same treatment. Irradiation of synchronously dividing cultures revealed that intragenic recombination occurs at all three stages of the cell cycle- G1, S and G2. It was also found that UV-induced gene reversion can occur during the S and G2 stages, but not during the G1 stage of the cell cycle.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02427750
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    Paper (German National Licenses)
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  • 2
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    Helicopter technology benefits and needs. Volume 1: Summary (1980)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: Present public service helicopter benefits and the potential benefits of an advanced public service rotorcraft (200 knots to 300 knots) are summarized. Past and future public service growth is quantified and assessed and needs, problem areas, and desired vehicle characteristics are defined. Research and technology recommendations are formulated and the costs and benefits of research options are assessed.
    Keywords: URBAN TECHNOLOGY AND TRANSPORTATION
    Type: NASA-CR-166469-VOL-1 , NAS 1.26:166469-VOL-1 , Public Service Helicopter Users'' Workshop; Jul 14, 1980 - Jul 16, 1980; Moffett Field, CA; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Helicopter technology benefits and needs. Volume 2: Appendices (1980)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: Vehicle design, avionics and flight systems; safety and reliability; navigation, guidance and flight control; propulsion; auxiliary systems; human factors; and monitoring and diagnostic systems are the technology areas involved in solving operational and technical problems related to the use of helicopters. Tables show the problems encountered and the proposed research and technology for helicopter use for search and rescue; emergency medical services; law enforcement; environmental control; fire fighting; and resource management.
    Keywords: URBAN TECHNOLOGY AND TRANSPORTATION
    Type: NASA-CR-166470-VOL-2 , NAS 1.26:166470-VOL-2 , Public Service Helicopter Users'' Workshop; Jul 14, 1980 - Jul 16, 1980; Moffett Field, CA; United States
    Format: application/pdf
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
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