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  • Anisotropic problems  (1)
  • Gonad development  (1)
  • Resolution enhancement by folding  (1)
  • 1
    ISSN: 1432-2242
    Keywords: Japanese quail ; Diallel cross ; Heterosis ; Gonad development ; Sexual dimorphism
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The influence of growth on the extent of heterosis for juvenile body weight and gonad development was studied in a diallel cross among two lines of Japanese quail differing in adult body size. A total of 1,096 birds (563 males and 533 females) was slaughtered between 25 and 49 days of age. Reciprocal cross differences were non-significant. Heterosis showed a curvilinear course with age peaking during early growth (body weight) and during sexual maturity (gonad percentage). Overall advanced physiological development of the crossbreds probably begins as early as during the embryonic stages and results in earlier sexual maturity. In females, heterosis for percentage gonads was biased strongly by the presence of a hard-shelled egg in the uterus.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 0749-1581
    Keywords: Resolution enhancement by folding ; Folding in the hetero-dimension ; Proton detected heteronuclear NMR ; HMQC resolution in the hetero-dimension ; HMBC resolution in the hetero-dimension ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Limited resolution in indirect detected frequency dimensions (evolution periods) in multi-dimensional spectroscopy is a common problem, especially in the carbon dimension of heteronuclear experiments. Folding of signals in empty regions can overcome these problems. To record the spectra in a pure phase certain conditions have to be fulfilled to account for unavoidable deviations from zero time of the zero increment. A new slight variation of inverse heteronuclear correlation pulse sequences is proposed to allow pure phase spectra. Practical applications are given.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Computing 50 (1993), S. 127-148 
    ISSN: 1436-5057
    Keywords: 65F10 ; 65N20 ; 65N30 ; Anisotropic problems ; block-Gauss-Seidel iteration ; Gauss-Seidel iteration ; hierarchical basis ; multigrid methods ; partial differential equations ; point-oriented methods ; semidefinite system ; sparse grids
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Description / Table of Contents: Zasammenfassung Wir stellen gitterorientierte und neu entwickelte punktorientierte robuste Multilevelverfahren für Voll- und Dünngitterdiskretisierungen vor. Besonders die punktorientierten Multilevelmethoden sind sehr gut zu parallelisieren und erweisen sich als robust für anisotrope Modellprobleme. Sie erlauben eine einfache Erweiterung auf gebietsorientierte Multilevelmethoden mit denselben Eigenschaften. Wir berichten die Ergebnisse numerischer Experimente für die Reduktionszahlen dieser neuen Algorithmen.
    Notes: Abstract We present grid-oriented and newly developed point-oriented robust multilevel methods for full and sparse grid discretizations. Especially the point-oriented multilevel methods are very well suited for parallelization and behave robust for anisotropic model problems. They can be generalized easily to domain-oriented multilevel methods with the same properties.
    Type of Medium: Electronic Resource
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