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  • 1980-1984  (15)
  • 1935-1939  (4)
  • 11
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    Midlatitude Pi2 pulsations: AFGL and ISEE magnetometer observations correlated (1982)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: The ISEE observations of the pi2 magnetic pulsations occuring substorm onset in the inner magnetosphere are discussed. One of these events which was also detected as a pi2 event by the AFGL midlatitude magnetometers is considered. The event occurred when the foot of the ISEE field line was over North America. The ground and satellite signals are remarkably similar: they start and stop at the same time, have the same period and can be correlated cycle by cycle. The waves are detected in the electric field data from ISEE 1 and in the magnetic field data from both ISEE 1 and ISEE 2. Calculation of the Poynting vector at ISEE 1 shows that the energy flowed mainly westward, but that there was also a component towards the nearer (southern) ionospheric foot of the field line. The phases between the various field components measured by ISEE 1 and 2 indicate that this is a standing hydromagnetic oscillation.
    Keywords: ASTROPHYSICS
    Type: NASA-TM-84763 , NAS 1.15:84763
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 12
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    Magnetospheric pulsations observed by ISEE 1 and 2 satellites (1984)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: The ISEE 1 and 2 spacecraft studied whether observed amplitude variations in hydromagnetic waves were due to the motion of the spacecraft through a time stationary structure or were due to temporal changes. The data provide evidence for spatially limited standing hydromagnetic wave resonant regions. The standing wave harmonic and Poynting vector were deduced from the simultaneous observations of the wave magnetic and electric field.
    Keywords: GEOPHYSICS
    Type: ESA Achievements of the Intern. Magnetospheric Study (IMS); p 619-623
    Format: text
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    NASA TECHNICAL REPORTS
  • 13
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    Multisatellite observations of resonant hydromagnetic waves (1982)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Long period geomagnetic pulsations with periods between about 10 and 600 s have been observed by ground magnetometers for over 100 years. Dungey (1954) suggested that these pulsations might be hydromagnetic waves resonating on geomagnetic field lines. One of the most recent techniques employed to examine pulsations and to test pulsation theory has been that of multispacecraft observations. A review is attempted to show how multisatellite observations have been used to provide new insight in the generation mechanisms, propagation characteristics, and resonant properties of magnetospheric pulsations. Some studies show how measurements of the plasma environment both in the vicinity of the waves and elsewhere have enabled tests of resonance theory in ways which were not previously possible with single satellite measurements.
    Keywords: GEOPHYSICS
    Format: text
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    NASA TECHNICAL REPORTS
  • 14
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    Endurance tests with large-bore tapered-roller bearings to 2.2 million DN (1981)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Endurance life tests were run with standard-design bearings of vacuum-melted AISI 4320 and CBS-1000M at 12,500 rpm, and high-speed bearings of CBS-1000M and trough-hardened AISI M-50 at 18,500 rpm. Both sets of bearings were of 120.65 mm bore-tapered roller type, and were run under heavy combined radial and thrust loads until either fatigue failure or a preset cutoff time of 1100 hours was reached. It was found that: (1) the CBS-1000M standard-design bearings ran to a 10% life approximately six times that of the rated catalog life; (2) twelve identical bearings of AISI 4320 ran to ten times rated catalog life without failure; (3) cracking and fracture of the cones of AISI M-50 high-speed design bearings occurred at 18,500 rpm due to high tensile hoop stresses; and (4) four CBS 1000M high-speed bearings ran to twenty-four times rated catalog life without spalling, cracking or fracture failures.
    Keywords: MECHANICAL ENGINEERING
    Type: ASME PAPER 81-LUB-56 , Joint Lubrication Conference; Oct 05, 1981 - Oct 07, 1981; New Orleans, LA
    Format: text
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    NASA TECHNICAL REPORTS
  • 15
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    Handels-, Industrie- und Verkehrspolitik: Otto Philipp: Die Wiederherstellung der privaten Wohnbautätigkeit (Book Review) (1936)
    Wien : Periodicals Archive Online (PAO)
    Journal of economics/Zeitschrift für Nazionalökonomie. 7:5 (1936:Dez. 20) 697 
    Details
    ISSN: 0931-8658
    Topics: Economics
    Description / Table of Contents: Volkswirtschaftspolitik
    Notes: Einzelbesprechungen
    URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:4223-1936-007-05-000011
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    Paper (German National Licenses)
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  • 16
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    Karl Langer: Standortsrisiken im Einzelhandel. Franz Krusche: Betriebsdichte im Wiener Einzelhandel (Book Review) (1936)
    Wien : Periodicals Archive Online (PAO)
    Journal of economics/Zeitschrift für Nazionalökonomie. 7:5 (1936:Dez. 20) 701 
    Details
    ISSN: 0931-8658
    Topics: Economics
    Description / Table of Contents: Privatwirtschaftslehre
    Notes: Einzelbesprechungen
    URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:4223-1936-007-05-000017
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    Paper (German National Licenses)
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  • 17
    Electronic Resource
    Electronic Resource
    Feldstärkeberechnung mit Hilfe von Flächenladungen und Flächenströmen (1984)
    Springer
    Electrical engineering 67 (1984), S. 309-316 
    Details
    ISSN: 1432-0487
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Description / Table of Contents: Contents The paper deals with a numerical method for the computation of threedimensional electric fields. An integral equation method is applied which uses an areal source distribution situated on the field boundaries. In the case of electrostatic fields these sources are surface charges, in the case of slow-variable electric fields surface currents. In the presented contribution the field components are determined by means of an analytical differentiation of the potential coefficients. The integration over areal sources which have a great distance from the field point is solved by a numerical method, for source points situated near the field point by an analytical calculation. The method is illustrated by means of two examples.
    Notes: Übersicht Der Aufsatz beschreibt ein numerisches Verfahren zur Berechnung dreidimensionaler elektrischer Felder. Es wird eine Integralgleichungsmethode verwendet, die auf der Berandung des Feldes eine flächenhafte Quellenverteilung benutzt. Im Fall von elektrostatischen Feldern sind diese Quellen Flächenladungen, im Fall von langsam veränderlichen elektrischen Feldern Flächenströme. Im vorliegenden Beitrag werden die Feldstärkekomponenten durch analytische Differentiation der Potentialkoeffizienten ermittelt, wobei die notwendige Integration über die Flächenquellen in großer Entfernung vom Aufpunkt numerisch durchgeführt wird, in der Nähe des Aufpunktes jedoch über eine analytische Rechnung. Das Verfahren wird anhand von zwei Anwendungsbeispielen erläutert.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01579787
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  • 18
    Electronic Resource
    Electronic Resource
    Co-operative nature of N-glycosylation of proteins at multiple sites: evidence from studies with tunicamycin (1983)
    Springer
    Bioscience reports 3 (1983), S. 331-336 
    Details
    ISSN: 1573-4935
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The pattern of glycosylation of newly synthesized human and routine immunoglobulin μ-chains varies according to the degree of inhibition of N-glycosylation effected by using the antibiotic tunicamycin. Tunicamycin, at high concentrations, can apparently block N-glycosylation of μ-chains completely as judged by SDS-PAGE analysis of the biosynthetically labelled products. At lower concentrations of tunicamycin, fully giycosy]ated and totally non-glycosylated chains were the predominant molecular species. The paucity of the predicted partially glycosylated μ-chains leads us to suggest that the addition of oligosaccharides to the appropriate acceptor sites is a cooperative process. Long exposure of fluorographs reveals each of the predicted intermediately glycosylated forms of the μ-chain, and counting the number of bands on such fluorographs may prove useful in the preliminary determination of the number of N-linked oligosaccharides in a given glycoprotein.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01122897
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  • 19
    Electronic Resource
    Electronic Resource
    Einzelbesprechungen (1936)
    Springer
    Journal of economics 7 (1936), S. 686-707 
    Details
    ISSN: 1617-7134
    Source: Springer Online Journal Archives 1860-2000
    Topics: Economics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01316646
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    Paper (German National Licenses)
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