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  • 1
    Electronic Resource
    Electronic Resource
    Effect of exogenous histone H5 on integration of histone H1 in rat liver chromatin. Correlations with aberrant -N-methylation of histone H1
    Amsterdam : Elsevier
    Biochimica et Biophysica Acta (BBA)/Gene Structure and Expression 867 (1986), S. 163-175 
    Details
    ISSN: 0167-4781
    Keywords: (Rat liver) ; Aberrant methylation ; Histone ; Histone methylation ; Nucleosome
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Medicine , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0167-4781(86)90076-X
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    Paper (German National Licenses)
    Fulltext
  • 2
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    KC-135 winglet program overview (1982)
    In:  CASI
    Details
    Publication Date: 2006-02-14
    Description: A joint NASA/USAF program was conducted to accomplish the following objectives: (1) evaluate the benefits that could be achieved from the application of winglets to KC-135 aircraft; and (2) determine the ability of wind tunnel tests and analytical analysis to predict winglet characteristics. The program included wind-tunnel development of a test winglet configuration; analytical predictions of the changes to the aircraft resulting from the application of the test winglet; and finally, flight tests of the developed configuration. Pressure distribution, loads, stability and control, buffet, fuel mileage, and flutter data were obtained to fulfill the objectives of the program.
    Keywords: AERODYNAMICS
    Type: KC-135 Winglet Program Rev.; p 1-46
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Vortex attenuation flight experiments (1977)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: Flight tests evaluating the effects of altered span loading, turbulence ingestion, combinations of mass and turbulence ingestion, and combinations of altered span loading turbulance ingestion on trailed wake vortex attenuation were conducted. Span loadings were altered in flight by varying the deflections of the inboard and outboard flaps on a B-747 aircraft. Turbulence ingestion was achieved in flight by mounting splines on a C-54G aircraft. Mass and turbulence ingestion was achieved in flight by varying the thrust on the B-747 aircraft. Combinations of altered span loading and turbulence ingestion were achieved in flight by installing a spoiler on a CV-990 aircraft and by deflecting the existing spoilers on a B-747 aircraft. The characteristics of the attenuated and unattenuated vortexes were determined by probing them with smaller aircraft. Acceptable separation distances for encounters with the attenuated and unattenuated vortexes are presented.
    Keywords: AERODYNAMICS
    Type: Wake Vortex Minimization; p 369-403
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    Wake vortex technology (1978)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: A brief overview of the highlights of NASA's wake vortex minimization program is presented. The significant results of this program are summarized as follows: (1) it is technically feasible to reduce significantly the rolling upset created on a trailing aircraft; (2) the basic principles or methods by which reduction in the vortex strength can be achieved have been identified; and (3) an analytical capability for investigating aircraft vortex wakes has been developed.
    Keywords: AERODYNAMICS
    Type: CTOL Transport Technol., 1978; p 757-771
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 5
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    Flight test techniques for wake-vortex minimization studies (1977)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: Flight test techniques developed for use in a study of wake turbulence and used recently in flight studies of wake minimization methods are discussed. Flow visualization was developed as a technique for qualitatively assessing minimization methods and is required in flight test procedures for making quantitative measurements. The quantitative techniques are the measurement of the upset dynamics of an aircraft encountering the wake and the measurement of the wake velocity profiles. Descriptions of the instrumentation and the data reduction and correlation methods are given.
    Keywords: AERODYNAMICS
    Type: Wake Vortex Minimization; p 193-220
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 6
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    Ground-based measurements of the wake vortex characteristics of a B747 aircraft in various configurations (1977)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: A Boeing 747 aircraft flew 54 passes at low level over ground-based sensors. Vortex velocities were measured by a laser-Doppler velocimeter, an array of monostatic acoustic sounders, and an array of propeller anemometers. Flow visualization of the wake was achieved using smoke and balloon tracers. Preliminary results were obtained on the initial downwash field, the time for merging of the multiple vortices, the velocity fields, vortex decay, and the effects of spoilers and differential flap settings on the dissipation and structure of vortices.
    Keywords: AERODYNAMICS
    Type: AIAA PAPER 77-9 , Aerospace Sciences Meeting; Jan 24, 1977 - Jan 26, 1977; Los Angeles, CA
    Format: text
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    NASA TECHNICAL REPORTS
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