GLORIA

GEOMAR Library Ocean Research Information Access

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Online Resource
    Online Resource
    Computed Electron Micrographs and Defect Identification. (1973)
    San Diego :Elsevier Science & Technology,
    Details
    Keywords: Metals -- Defects -- Data processing. ; Electron microscopy -- Data processing. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (413 pages)
    Edition: 1st ed.
    ISBN: 9780444601476
    URL: https://ebookcentral.proquest.com/lib/geomar/detail.action?docID=1179946
    Language: English
    Note: Front Cover -- Computed Electron Micrographs and Defect Identification -- Copyright Page -- Table of Contents -- Preface -- CHAPTER 1. INTRODUCTION -- CHAPTER 2. INTRODUCTION TO THE BASIC THEORY -- 2.1. Introduction -- 2.2. The diffraction of electrons by a crystal -- 2.3. The two-beam dynamical equations -- 2.4. The absorption parameters -- 2.5. The deviation of the crystal from the Bragg reflecting position -- 2.6. The extinction distance -- 2.7. The displacement vector R -- 2.8. The foil normal F -- CHAPTER 3. EXPERIMENTAL TECHNIQUES -- 3.1. Introduction -- 3.2. Image-diffraction pattern rotation -- 3.3. Crystal tilting technique -- 3.4. Specific indexing of the orientation map and diffracting vectors -- 3.5. Determination of beam direction Β -- 3.6. Determination of defect line direction u -- 3.7. Determination of foil normal F -- 3.8. Extinction distance -- 3.9. Determination of w -- 3.10. Determination of foil thickness -- 3.11. Anomalous absorption coefficient -- CHAPTER 4. PRINCIPLES OF ONEDIS -- 4.1. Introduction -- 4.2. The two basic principles -- 4.3. Modifications to the generalised cross-section to accomodate experimental situations -- 4.4. Program geometry -- 4.5. The grey scale and printing the micrograph -- CHAPTER 5. MATCHING WITH ONEDIS -- 5.1. Introduction -- 5.2. Aluminium -- 5.3. β-brass -- CHAPTER 6. PRINCIPLES OF TWODIS -- 6.1. Introduction -- 6.2. The two basic principles -- 6.3. The operation of the program -- 6.4. Program geometry and arrangement of the calculation -- 6.5. Extension of the program to more complex configurations -- CHAPTER 7. MATCHING WITH TWODIS -- 7.1. Introduction -- 7.2. Example 1, defect A -- 7.3. Example 2, defect Β -- CHAPTER 8. APPLICATIONS OF THE TECHNIQUE -- 8.1. Introduction -- 8.2. Influence of elastic anisotropy on the invisibility of dis locations. , 8.3. Effective invisibility of images due to large values of w -- 8.4. Diffraction contrast from lines of dilation -- 8.5. Apparent anomalous absorption -- 8.6. Nature of stacking faults -- 8.7. Identification of bent dislocations -- 8.8. A dissociation reaction in β-brass -- 8.9. Contrast from partial dislocations -- 8.10. Dissociated Frank dislocations -- 8.11. Growth of Frank loops by fault climb -- 8.12. Dislocation dipoles in nickel -- 8.13. Contrast from overlapping faults -- 8.14. Analysis of partial dislocations and stacking faults on closely spaced planes -- CHAPTER 9. DISCUSSION OF THE APPLICATIONS AND LIMITATIONS OF THE TECHNIQUE -- 9.1. Introduction -- 9.2. Uniqueness and the amount of information necessary to identify defects -- 9.3. Optimisation of the technique -- 9.4. Limitations in the theory -- 9.5. Restrictions inherent in the programs -- CHAPTER 10. COMPUTER PROGRAMS -- 10.1. Introduction -- 10.2. Program ONEDIS for one dislocation and cubic crystals -- 10.3. Subroutines -- 10.4. Special test version of program ONEDIS -- 10.5. Subroutine HALFTN -- 10.6. Programs for other crystal systems -- 10.7. Isotropic elasticity -- 10.8. Modification DELUGE -- 10.9. Program TWODIS for cubic crystals -- 10.10. Dark field pictures -- APPENDIX -- A.1. Introduction -- A.2. Single dislocations -- A.3. Single stacking faults -- A.4. Relations between dislocation-stacking fault images -- A.5. The symmetry of dislocation dipole images -- A.6. The effect of elastic symmetry on dislocation images -- REFERENCES -- SUBJECT INDEX.
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    GEOMAR EBL
  • 2
    Electronic Resource
    Electronic Resource
    Multiplication modulon (1980)
    Springer
    BIT 20 (1980), S. 115-116 
    Details
    ISSN: 1572-9125
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01933594
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    A New Form for a Giant Radio Telescope (1957)
    [s.l.] : Nature Publishing Group
    Nature 179 (1957), S. 692-693 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE usual type of general-purpose radio telescope X is a steerable parabolic reflector. For operation at the important hydrogen line (1,420 Me./s.) the parabola must not deviate from its theoretical shape by more than one inch, and with parabolas of 250-ft. diameter or larger under construction or ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/179692a0
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Fatigue of Metals under Random Loads (1956)
    [s.l.] : Nature Publishing Group
    Nature 177 (1956), S. 1176-1177 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Many tests of Miner's rule have been made with an applied stress which is sinusoidal and the amplitude of which is varied at intervals during the test. These have shown that Miner's predicted fatigue life may differ from that measured by factors up to 30. However, to our knowledge, there had not ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/1771176a0
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Explicit Galois resolvents for sextic equations (1987)
    New York, NY : Wiley-Blackwell
    International Journal of Quantum Chemistry 31 (1987), S. 345-359 
    Details
    ISSN: 0020-7608
    Keywords: Computational Chemistry and Molecular Modeling ; Atomic, Molecular and Optical Physics
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Several techniques for calculating the Galois resolvents of polynomial equations are discussed and implemented. In particular, the method of power sums, in conjunction with the symbolic algebra program muMATH, is used to derive a complete set of explicit algebraic resolvents for the general sextic equation. A simple example, drawn from the theory of crystal elasticity, illustrates the utility of these results in answering the question “When is a polynomial equation (with multinomial coefficients) solvable?”.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/qua.560310306
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    The Galois unsolvability of the sextic equation of anisotropic elasticity (1979)
    Springer
    Journal of elasticity 9 (1979), S. 9-20 
    Details
    ISSN: 1573-2681
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract By an approximate numerical application of Galois theory it is proved that the sextic equation of anisotropic elasticity for cubic symmetry is in general unsolvable in radicals, elementary transcendental functions, or elliptic modular functions and that its group is the full symmetric group. This implies the same unsolvability for tetragonal, orthorhombic, monoclinic, and triclinic symmetry. A separate investigation proves the same unsolvability for trigonal symmetry. Special cases of cubic symmetry which might have solvable equations are examined. Directions restricted to {111} or {112} planes give unsolvable equations, in contrast to {100} and {110} planes. Three additional classes of elastic constants which give solvable equations are found but only two limiting cases are physically possible. An extensive survey suggests that any further special elastic constants are rather unlikely.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00040976
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    The monodromic Galois groups of the sextic equation of anisotropic elasticity (1979)
    Springer
    Journal of elasticity 9 (1979), S. 321-324 
    Details
    ISSN: 1573-2681
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract It has previously been shown that the conventional algebraic Galois group of the sextic equation of anisotropic elasticity for cubic crystals is the symmetric group and the equation is therefore algebraically unsolvable in radicals. As an equation with four parameters it has also 15 monodromic Galois groups corresponding to different, relaxed, meanings of solvability in radicals. Three of these are appropriate, to solve explicitly for the functional dependence of the roots on the two directional parameters or on the two elastic parameters or on all four parameters. From the definition of a monodromic group as the root permutations induced by all complex circuits of the relevant parameters, it is shown numerically that these three monodromic groups must be either the alternating or the symmetric. The equation is therefore also unsolvable for these weaker and more appropriate meanings of solvability.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00041102
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...