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  • SPACE RADIATION  (633)
  • ASTROPHYSICS
  • Analytical Chemistry and Spectroscopy
  • Humans
  • Mice
  • 1970-1974  (640)
  • 1965-1969  (293)
Collection
Keywords
Publisher
Years
Year
  • 1
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    Pioneer 10 observations of the solar wind interaction with Jupiter (1974)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: Detailed analysis of the Pioneer 10 plasma analyzer experiment flight data during the Jupiter flyby in late November and early December 1973 has been performed. The observations show that the interaction of Jupiter's magnetic field with the solar wind is similar in many ways to that at earth, but the scale size is over 100 times larger. Jupiter is found to have a detached standing bow shock wave of high Alfven Mach number. Like the earth, Jupiter has a prominent magnetopause that deflects the magnetosheath plasma and excludes its direct entry into the Jovian magnetosphere. Unlike that of the earth, the sunward hemisphere of Jupiter's outer magnetosphere is found to be highly inflated with thermal plasma and a high-beta region that is highly responsive to changes in solar wind dynamic pressure.
    Keywords: SPACE RADIATION
    Type: Journal of Geophysical Research; 79; Sept. 1
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Pioneer 10 observations of the solar wind interation with Jupiter (1974)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Pioneer 10 Plasma Analyzer experiment flight data during the Jupiter flyby are presented. The observations show that the interaction of Jupiter's magnetic field with the solar wind is similar in many ways to that at earth, but the scale size is over 100 times larger. Jupiter is found to have a detached standing bow shock wave of high Alfven Mach number. Jupiter has a prominent magnetopause which deflects the magnetosheath plasma and excludes its direct entry into the Jovian magnetosphere. The sunward hemisphere of Jupiter's outer magnetosphere is found to be highly inflated with thermal plasma and a high beta region which is highly responsive to changes in solar wind dynamic pressure. Observational arguments are presented which tend to discount a thin disklike magnetosphere but, rather, favor a Jovian magnetosphere, albeit probabily considerably flattened as compared to the earth's magnetosphere, yet still with reasonable thickness. Results concerning the shock jump conditions, the magnetosheath flow field and inferred internal magnetospheric plasma are presented.
    Keywords: SPACE RADIATION
    Type: NASA-TM-X-62357
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Composition of interplanetary particles at energies from 0.1 to 150 MeV/nucleon, part B (1972)
    In:  CASI
    Details
    Publication Date: 2005-11-30
    Description: During the Apollo 16 mission, a solar flare produced an enormous amount of low-energy nuclei, many orders of magnitude greater than the level inferred from studies of tracks in the window of the Apollo 12 spacecraft during a time when the sun was quiet. The differential energy spectrum of nuclei with Z less than or equal to 6 falls by seven orders of magnitude over the interval from 0.1 to 20 MeV/nucleon, then remains almost flat up to approximately 100 MeV/nucleon. The two parts correspond to contributions from the sun and from galactic cosmic rays. Any maximum in the spectrum occurs below the lowest energy studied.
    Keywords: SPACE RADIATION
    Type: NASA. Lyndon B. Johnson Space Center Apollo 16 Prelim. Sci. Rept.; 8 p
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    Preliminary comparison of solar wind plasma observations in the geomagnetospheric wake at 1000 and 500 earth radii. (1969)
    In:  Other Sources
    Details
    Publication Date: 2011-08-12
    Description: Solar wind plasma observations in geomagnetospheric wake compared at 1000 and 500 earth radii, considering ion energy spectra and geomagnetic tail
    Keywords: SPACE RADIATION
    Type: ; ADEMIE DES SCIENCES
    Format: text
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    NASA TECHNICAL REPORTS
  • 5
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    On the e-process - Its components and their neutron excesses (1974)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: The pattern of abundances within the iron-abundance peak of the solar system is analyzed for various Cr, Fe, and Ni abundances, and a method is developed for finding the best fit to a given set of abundances with a chosen number of zones, i.e., mass contributions characterized by differing values of eta. This material can be synthesized by a superposition of e-process compositions in a low-eta region (eta = 0.003) and a high-eta region (eta = 0.065 -0.080) with at least 85% coming from the low-eta region. Addition of a third eta zone is unproductive. The applicability of the particle-poor freeze out is discussed in the light of these abundances, and the results of employing different numbers and types of zones are interpreted as an indication of the relative abundances themselves. Ejection of the low-eta zones is of great interest in gamma-ray astronomy and for empirical testing of theories of nucleosynthesis. The distribution of high zones should give important information about the formation of collapsed remnants.
    Keywords: ASTROPHYSICS
    Type: Astrophysical Journal; 193; Oct. 1
    Format: text
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    NASA TECHNICAL REPORTS
  • 6
    Electronic Resource
    Electronic Resource
    Mass spectrometry of synthetic oligopeptides N, O-permethylated, N-acetylated derivativesAbbreviation: DMF = dimethylformamide. (1974)
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 1 (1974), S. 175-189 
    Details
    ISSN: 1052-9306
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Mass spectra of a series of stable isotope derivatives aided a structure elucidation study of an amino acid amide (Tyr-NH2) and the following family of synthetic oligopeptides: Gly-Tyr-NH2, Gly-Gly-Tyr-NH2, Gln-Gly-Gly-Tyr-NH2, Gln-Gln-Gly-Gly-Tyr-NH2, Ala-Gln-Gln-Gly-Gly-Tyr-NH2, Ser-Ala-Gln-Gln-Gly-Gly-Tyr-NH2 and Lys-Ser-Ala-Gln-Gln-Gly-Gly-Tyr-NH2. This series of peptides was synthesized by classical methods. N,O-permethylated, N-acetylated derivatives were synthesized to provide sufficient volatility for mass spectrometry. Various combinations of stable isotope derivatives (CH3CO + CH3, CD3CO + CH3, CH3CO + CD3, CD3CO + CD3) confirmed proposed fragmentation pathways and corroborated hypothetical ion structures. This family of oligopeptides corresponds to the C-terminus of scotophobin.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bms.1200010307
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  • 7
    Electronic Resource
    Electronic Resource
    Multiple ion detection by accelerating voltage alternation in conjunction with voltage sweeping (1974)
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 1 (1974), S. 418-422 
    Details
    ISSN: 1052-9306
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: An analog multiple ion detection system has been developed for magnetic sector mass spectrometers based on accelerating voltage alternation in conjunction with the accurate maintenance of focusing by means of voltage sweeping, using a superimposed a.c. sine wave voltage. This multiple ion detector voltage sweep system is easily constructed, inexpensive and produces analytical data of much greater precision than that reported from conventional systems. The application of the multiple ion detector voltage sweep system to biomedical problems is illustrated by the development of a method for the determination of stable isotope enrichment in blood glucose and alanine in children infused with tetradeuterio-L-alanine and dideuterioglucose to study gluconeogenesis and glucose utilization in vivo.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bms.1200010610
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  • 8
    Electronic Resource
    Electronic Resource
    The field ionization spectra of some natural coumarins (1974)
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 1 (1974), S. 5-9 
    Details
    ISSN: 1052-9306
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The field ionization and electron impact mass spectra of eleven coumarins have been compared. In the field ion spectra the molecular ions were the base peaks and structurally diagnostic fragment ions formed by direct cleavage were present, whereas the molecular ions were weak in the electron impact spectra and fragment ions formed by rearrangement were dominant. Crude coumarin mixtures obtained from natural sources have been successfully examined using field ionization and gas chromatography + field ionization mass spectrometry.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bms.1200010104
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  • 9
    Electronic Resource
    Electronic Resource
    NMR studies of sulphur heterocycles. IIFor Part I, see Ref. 1. - substituent effects in the thieno[2,3-b] [1]benzothiophene and thieno[3,2-b] [1]benzothiophene systems (1974)
    Chichester : Wiley-Blackwell
    Organic Magnetic Resonance 6 (1974), S. 293-297 
    Details
    ISSN: 0030-4921
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Substituent chemical shifts for the title systems have been determined at infinite dilution in CDCl3 from a study of 40 derivatives. An excellent correlation is found between the ortho effect of substituents in the thiophene ring and the corresponding effects in thiophene itself, indicating negligible perturbation by the fused rings. Long range effects of 2- and 3-substituents on the 5- and 6-protons are electronic in origin, but cannot be interpreted in terms of simple resonance theory. These long range effects correlate linearly with σp°. An O, S-cis conformation for the formyl group in 2-formyl-thieno[2,3-6][1]benzothiophene is adduced on the basis of chemical shifts.
    Additional Material: 5 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mrc.1270060512
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  • 10
    Electronic Resource
    Electronic Resource
    Stéréochimie en pentacoordination. Apport des réactifs inducteurs de déplacement chimique à l'etude de spirophosphoranes à liaison P—H (1974)
    Chichester : Wiley-Blackwell
    Organic Magnetic Resonance 6 (1974), S. 340-345 
    Details
    ISSN: 0030-4921
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The NMR spectra of eight spirophosphoranes bearing a P—H bond have been recorded in the presence of europium NMR shift reagent. The spectra are simplified by addition of the europium chelate. The observed displacements in the proton NMR lines allow the assignment of the endo and exo signals in some cases. By addition of the NMR shift reagent, one observes a displacement in the phosphite-spirophosphorane equilibrium in some cases.
    Notes: Le spectre de Résonance Magnétique Nucléaire de huit spirophosphoranes à liaison P—H a été enregistré en présence de chélate d'europium. L'addition du complexe d'europium amène la levée partielle ou totale de dégénérescence des spectres. Les modifications observées dans les déplacements chimiques permettent de proposer une attribution de position endo ou exo de certains signaux. L'addition du complexe d'europium entraîne, dans certains cas, une modification de l'équilibre entre les formes phosphites et spirophosphoranes.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mrc.1270060609
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