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  • 42.75
  • AERODYNAMICS
  • FLUID MECHANICS AND HEAT TRANSFER
  • Seismology
  • 2020-2024  (2)
  • 1970-1974
  • 1950-1954  (18)
  • 2024  (2)
  • 1952  (18)
Collection
Keywords
Publisher
Language
Years
  • 2020-2024  (2)
  • 1970-1974
  • 1950-1954  (18)
Year
  • 1
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    Homogenization of magnitudes of the ISC Bulletin (2024)
    Oxford Academic
    Details
    Publication Date: 2024-04-05
    Description: This article has been accepted for publication in Geophysical Journal International ©:The Author(s) 2023. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.Uploaded in accordance with the publisher's self-archiving policy. All rights reserved.
    Description: We implemented an automatic procedure to download the hypocentral data of the online Bulletin of the International Seismological Centre (ISC) in order to produce in near real-time a homogeneous catalogue of the Global and EuroMediterranean instrumental seismicity to be used for forecasting experiments and other statistical analyses. For the interval covered by the reviewed ISC Bulletin, we adopt the ISC locations and convert the surface wave magnitude (Ms) and short-period body-wave magnitude (mb) as computed by the ISC to moment magnitude (Mw), using empirical relations. We merge the so obtained proxies with real Mw provided by global and EuroMediterranean moment tensor catalogues. For the most recent time interval (about 2 yr) for which the reviewed ISC Bulletin is not available, we do the same but using the preferred (prime) location provided by the ISC Bulletin and converting to Mw the Ms and mb provided by some authoritative agencies. For computing magnitude conversion equations, we use curvilinear relations defined in a previous work and the chi-square regression method that accounts for the uncertainties of both x and y variables.
    Description: H2020 EU project RISE contract n. 821115
    Description: Published
    Description: 1771-1785
    Description: OST2 Deformazione e Hazard sismico e da maremoto
    Description: JCR Journal
    Keywords: Statistical methods ; Statistical seismology ; Earthquake source observations ; Seismology
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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    PAPER (OA)
  • 2
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    Hamburg in der Novemberrevolution von 1918/19 (2024)
    transcript Verlag | transcript Verlag
    Details
    Publication Date: 2024-05-13
    Description: Die Novemberrevolution von 1918/19 erschütterte die Tiefenschichten der politischen und gesellschaftlichen Ordnung der Metropole Hamburg. Diese vielschichtige Transformation wird anhand ausgewählter Akteur*innen, Institutionen und Ereignisse mit Beiträgen aus der neueren Revolutions-, Konflikt- und Kriegsforschung sowie aus der Kulturwissenschaft, der Geschichts- und Sozialwissenschaft nachgezeichnet. Die Beiträger*innen des Bandes durchleuchten die Dynamiken des revolutionären Wandels im umfassenden Dispositiv der urbanen Machtverhältnisse in ihren diskursiven Formationen: im Geschlechterverhältnis, in den Klassenverhältnissen, in der Wirtschaft, im Bildungswesen, im Film, in den Utopien und Vorstellungen der Menschen der Zeit. Die Beschreibung der dynamischen Umbrüche schließt die Nachbarstadt Altona und die Region ein und verbindet somit Lokales mit Nationalem und Globalem.
    Keywords: Revolution 1918/19 ; Hamburg ; Politik ; Gesellschaft ; Norddeutschland ; Wahlen 1919 ; Film ; Weimarer Republik ; Globalgeschichte ; Deutsche Geschichte ; Bismarck ; Metropole ; Seismologie ; Kulturgeschichte ; Geschlecht ; Stadt ; Sozialgeschichte ; Europäische Geschichte ; Geschichte des 20. Jahrhunderts ; Geschichtswissenschaft ; Politics ; Society ; North Germany ; Elections 1919 ; Weimar Republic ; Global History ; German History ; Seismology ; Cultural History ; Gender ; City ; Social History ; European History ; History of the 20th Century ; History ; thema EDItEUR::N History and Archaeology::NH History::NHD European history ; thema EDItEUR::N History and Archaeology::NH History::NHT History: specific events and topics::NHTB Social and cultural history
    Language: German
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    E-BOOK
  • 3
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    Seismische Bodenunruhe und Wetter (1952)
    In:  Umschau, Milano, California Institute of Technology Pasadena, vol. 52, no. 6, pp. 646-648, pp. L24306, (ISBN: 0534351875, 2nd edition)
    Details
    Publication Date: 1952
    Keywords: Seismology ; NOISE ; Meteorology
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    BIBLIOGRAPHY SEISMOLOGY
  • 4
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    Waves from blasts recorded in Southern California (1952)
    In:  Trans., Am. Geophys. Union, Milano, California Institute of Technology Pasadena, vol. 33, no. 6, pp. 427-431, pp. L24306, (ISBN: 0534351875, 2nd edition)
    Details
    Publication Date: 1952
    Keywords: Waves ; Seismometer ; Seismology ; EOS
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    BIBLIOGRAPHY SEISMOLOGY
  • 5
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    SV and SH (1952)
    In:  Trans., Am. Geophys. Union, Milano, California Institute of Technology Pasadena, vol. 33, no. 6, pp. 573-584, pp. L24306, (ISBN: 0534351875, 2nd edition)
    Details
    Publication Date: 1952
    Keywords: Waves ; SV waves ; Shear waves ; Seismology ; SH waves ; EOS
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    BIBLIOGRAPHY SEISMOLOGY
  • 6
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    Surface motion in SV and SH (1952)
    In:  Bull. Geol. Soc. Am., Los Angeles California, 1 p., California Institute of Technology Pasadena, vol. 63, no. 6, pp. 1353, pp. L24306, (ISBN: 0534351875, 2nd edition)
    Details
    Publication Date: 1952
    Keywords: Surface waves ; Waves ; Seismology ; Shear waves
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    BIBLIOGRAPHY SEISMOLOGY
  • 7
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    Wave velocities in the outer part of the earth's mantle (1952)
    In:  Nature, Milano, California Institute of Technology Pasadena, vol. 170, no. 6, pp. 289-290, pp. L24306, (ISBN: 0534351875, 2nd edition)
    Details
    Publication Date: 1952
    Keywords: Velocity analysis ; Seismology ; earth mantle
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    BIBLIOGRAPHY SEISMOLOGY
  • 8
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    Earthquakes in California (1952)
    In:  Looking Forward, Bull. of The Humanists, Los Angeles California, 1 p., California Institute of Technology Pasadena, vol. 1, no. 6, pp. 9-11, pp. L24306, (ISBN: 0534351875, 2nd edition)
    Details
    Publication Date: 1952
    Keywords: Seismology ; Seismicity
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    BIBLIOGRAPHY SEISMOLOGY
  • 9
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    Progress report, Seismological Laboratory, California Institute of Technology, 1951 (1952)
    In:  Trans., Am. Geophys. Union, Los Angeles California, 1 p., California Institute of Technology Pasadena, vol. 33, no. 6, pp. 759-762, pp. L24306, (ISBN: 0534351875, 2nd edition)
    Details
    Publication Date: 1952
    Keywords: Seismology ; Project report/description ; EOS
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    BIBLIOGRAPHY SEISMOLOGY
  • 10
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    Seismizität der Erde (1952)
    Springer
    In:  Professional Paper, Landolt Börnstein (6. Edition) III. Band: Astronomie und Geophysik, Berlin, Springer, vol. 7, no. XVI:, pp. 369-375, (ISBN: 3-540-23712-7)
    Details
    Publication Date: 1952
    Keywords: Seismology ; Seismicity
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    BIBLIOGRAPHY SEISMOLOGY
  • 11
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    Earthquakes: past and future (1952)
    In:  Engineers and Architects Sphere, Milano, California Institute of Technology Pasadena, vol. 1, no. 6, pp. 9-11, pp. L24306, (ISBN: 0534351875, 2nd edition)
    Details
    Publication Date: 1952
    Keywords: Seismology ; Seismicity
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    BIBLIOGRAPHY SEISMOLOGY
  • 12
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    Erdbebenwellen (1952)
    Springer
    In:  Professional Paper, Landolt Börnstein (6. Edition) III. Band: Astronomie und Geophysik, Berlin, Springer, vol. 7, no. XVI:, pp. 375-384, (ISBN: 3-540-23712-7)
    Details
    Publication Date: 1952
    Keywords: Seismology ; Waves
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    BIBLIOGRAPHY SEISMOLOGY
  • 13
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    Arvin-Tehachapi earthquake, July 21, 1952 (1952)
    California Division of Mines San Francisco
    In:  Mineral Information Service, New York, California Division of Mines San Francisco, vol. 5, no. Nov., pp. 1-8, pp. L03601, (ISSN: 1340-4202)
    Details
    Publication Date: 1952
    Keywords: Seismology ; Earthquake
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    BIBLIOGRAPHY SEISMOLOGY
  • 14
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    Bibliography of microseisms (1952)
    Division of Earthsciences, Seismological Laboratory, California Institute of Technology
    In:  Contract AF 19(122)436, Pasadena, Division of Earthsciences, Seismological Laboratory, California Institute of Technology, vol. 10, no. GL-TR-89-0230, pp. 1-94, (ISBN 3-933346-037)
    Details
    Publication Date: 1952
    Keywords: Handbook of geophysics ; Seismology ; Seismicity
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    BIBLIOGRAPHY SEISMOLOGY
  • 15
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    Method for estimating pitching-moment interference of wing-body combinations at supersonic speed (1952)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Keywords: AERODYNAMICS
    Type: NACA-RM-A52B06
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 16
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    Preliminary Investigation of Cyclic De-Icing of an Airfoil Using an External Electric Heater (1952)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: An investigation was conducted in the NACA Lewis icing research tunnel to determine the characteristics and requirements of cyclic deicing of a 65,2-216 airfoil by use of an external electric heater. The present investigation was limited to an airspeed of 175 miles per hour. Data are presented to show the effects of variations in heat-on and heat-off periods, ambient air temperature, liquid-water content, angle of attack, and. heating distribution on the requirements for cyclic deicing. The external heat flow at various icing and heating conditions is also presented. A continuously heated parting strip at the airfoil leading edge was found necessary for quick, complete, and consistent ice removal. The cyclic power requirements were found to be primarily a function of the datum temperature and heat-on time, with the other operating and meteorological variables having a second-order effect. Short heat-on periods and high power densities resulted in the most efficient ice removal, the minimum energy input, and the minimum runback ice formations. The optimum chordwise heating distribution pattern was found to consist of a uniform distribution of cycled power density in the impingement region. Downstream of the impingement region the power density decreased to the limits of heating which, for the conditions investigated, extended from 5.7 percent chord on the upper surface of the airfoil to 8.9 percent chord on the lower surface. Ice removal did not take place at a heater surface temperature of 32 F; surface temperatures of approximately 50 to 100 F were required to effect removal. Better de-icing performance and greater energy savings would be possible with a heater having a higher thermal efficiency.
    Keywords: FLUID MECHANICS AND HEAT TRANSFER
    Type: NACA-RM-E51J30
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    NASA TECHNICAL REPORTS
  • 17
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    General Correlation of Temperature Profiles Downstream of a Heated Air Jet Directed at Various Angles to Air Stream (1952)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: An experimental investigation was conducted to determine the temperature profiles downstream of heated air jets directed at angles of 90 deg, 60 deg, 45 deg, and 30 deg to an air stream. The profiles were determined at two positions downstream of the jet as a function of jet diameter, jet density, jet velocity, free-stream density, free-stream velocity, jet total temperature, orifice flow coefficient, and jet angle. A method is presented which yields a good approximation of the temperature profile in terms of the flow and geometric conditions.
    Keywords: FLUID MECHANICS AND HEAT TRANSFER
    Type: NACA-TN-2855
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    NASA TECHNICAL REPORTS
  • 18
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    Preliminary Results of Cyclical De-Icing of a Gas-Heated Airfoil (1952)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: An NACA 65(sub 1)-212 airfoil of 8-foot chord was provided with a gas-heated leading edge for investigations of cyclical de-icing. De-icing was accomplished with intermittent heating of airfoil segments that supplied hot gas to chordwise passages in a double-skin construction. Ice removal was facilitated by a spanwise leading-edge parting strip which was continuously heated from the gas-supply duct. Preliminary results demonstrate that satisfactory cyclical ice removal occurs with ratios of cycle time to heat-on period (cycle ratio) from 10 to 26. For minimum runback, efficient ice removal, and minimum total heat input, short heat-on periods of about 15 seconds with heat-off periods of 260 seconds gave the best results. In the range of conditions investigated, the prime variables in the determination of the required heat input for cyclical ice removal were the air temperature and the cycle ratio; heat-off period, liquid water content, airspeed, and angle of attack had only secondary effects on heat input rate.
    Keywords: FLUID MECHANICS AND HEAT TRANSFER
    Type: NACA-RM-E51J29
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    NASA TECHNICAL REPORTS
  • 19
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    Impingement of Water Droplets on an NACA 65(sub 1) -212 Airfoil at an Angle of Attack of 4 Deg (1952)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: The trajectories of droplets in the air flowing past an NACA 651-212 airfoil at an angle of attack of 40 were determined. The collection efficiency, the area of droplet impingement, and the rate of droplet impingement were calculated from the trajectories and are presented herein.
    Keywords: FLUID MECHANICS AND HEAT TRANSFER
    Type: NACA-RM-E52B12
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    NASA TECHNICAL REPORTS
  • 20
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    Simple graphical solution of heat transfer and evaporation from surface heated to prevent icing (1952)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Keywords: FLUID MECHANICS AND HEAT TRANSFER
    Type: NACA-TN-2799
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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