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  • Analytical Chemistry and Spectroscopy  (1)
  • BIOTECHNOLOGY  (1)
  • STRUCTURAL MECHANICS  (1)
  • 1970-1974  (3)
  • 1965-1969
Collection
Keywords
Publisher
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    Die Massenspektren der Nikotin-N-Oxide und der mit Ihnen Verwandten Tetrahydrooxazine (1973)
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 7 (1973), S. 839-843 
    Details
    ISSN: 0030-493X
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The mass spectra of the three nicotine-N-oxides are discussed, together with the spectra of tetrahydrooxazines. The compounds with an N-oxide function in the five membered ring partly rearrange thermally before electron-impact fragmentation.
    Notes: Die massenspektren der drei Nikotin-N-oxide werden zusammen mit den Spektren von Tetrahydrooxazinen diskutiert. Die Verbindungen mit N-Oxide-Ffunktion im 5-gliedrigen Ring lagern sich vor der Fragmentierung durch Elektronenstoß z.T. thermisch um.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/oms.1210070708
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    Paper (German National Licenses)
    Fulltext
  • 2
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    Unknown
    Scatter factor and reliability of aircraft structures (1972)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The concept of time to first failure is utilized to perform a parameter study of scatter factors of aircraft structures. The Weibull distribution is used for estimation of characteristic and certifiable lives. Scatter factors for various Weibull-shaped parameters, fleet sizes and level of reliabilities are calculated. It is concluded that the currently used range of scatter factors (2 through 4) is too narrow for the estimation of a safe life and that a safe and economical design for structural materials with shape parameters less than 2 does not seem feasible except for very small fleet sizes and low levels of reliability.
    Keywords: STRUCTURAL MECHANICS
    Type: NASA-CR-2100
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Unknown
    ASRDI Oxygen Technology Survey. Volume 2: Cleaning Requirements, Procedures, and Verification Techniques (1972)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The oxygen system cleaning specifications drawn from 23 industrial and government sources are presented along with cleaning processes employed for meeting these specifications, and recommended postcleaning inspection procedures for establishing the cleanliness achieved. Areas of agreement and difference in the specifications, procedures, and inspection are examined. Also, the lack of clarity or specificity will be discussed. This absence of clarity represents potential safety hazards due to misinterpretation. It can result in exorbitant expenditures of time and money in satisfying unnecessary requirements.
    Keywords: BIOTECHNOLOGY
    Type: NASA-SP-3072
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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