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  • 1995-1999  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    Expression of the stay-green character introgressed into Lolium temulentum Ceres from a senescence mutant of Festuca pratensis (1999)
    Springer
    Theoretical and applied genetics 99 (1999), S. 92-99 
    Details
    ISSN: 1432-2242
    Keywords: Key words Leaf ; Chlorophyll ; Carotenoid ; Protein ; LHCPII ; Cytochrome f ; PSAD
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  A mutant allele at the nuclear locus sid confers indefinite greenness on senescing leaves of the pasture grass Festuca pratensis. Via the bridging species Lolium multiflorum and a programme of backcrossing and selfing, the mutant allele (designated sid y ) was introgressed into Lolium temulentum Ceres. The latter is a fast-growing, annual, inbreeding model grass with many advantages over the slower, perennial, genetically heterogeneous outbreeder F. pratensis. Analyses of photosynthetic pigments, total leaf proteins and individual plastid polypeptide components in senescing attached and detached leaves of yy, yY and YY plants confirmed that the stay-green phenotype of yy F. pratensis had been successfully introduced into the L. temulentum background.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001220051212
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    Paper (German National Licenses)
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  • 2
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    Sensitivity Analysis and Optimization of Aerodynamic Configurations with Blend Surfaces (1997)
    In:  CASI
    Details
    Publication Date: 2019-07-20
    Description: A novel (geometrical) parametrization procedure using solutions to a suitably chosen fourth order partial differential equation is used to define a class of airplane configurations. Inclusive in this definition are surface grids, volume grids, and grid sensitivity. The general airplane configuration has wing, fuselage, vertical tail and horizontal tail. The design variables are incorporated into the boundary conditions, and the solution is expressed as a Fourier series. The fuselage has circular cross section, and the radius is an algebraic function of four design parameters and an independent computational variable. Volume grids are obtained through an application of the Control Point Form method. A graphic interface software is developed which dynamically changes the surface of the airplane configuration with the change in input design variable. The software is made user friendly and is targeted towards the initial conceptual development of any aerodynamic configurations. Grid sensitivity with respect to surface design parameters and aerodynamic sensitivity coefficients based on potential flow is obtained using an Automatic Differentiation precompiler software tool ADIFOR. Aerodynamic shape optimization of the complete aircraft with twenty four design variables is performed. Unstructured and structured volume grids and Euler solutions are obtained with standard software to demonstrate the feasibility of the new surface definition.
    Keywords: Aerodynamics
    Type: NASA-CR-203841 , NAS 1.26:203841
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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