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  • GEOPHYSICS  (226)
  • Inorganic Chemistry  (40)
  • ASTROPHYSICS
  • ENERGY PRODUCTION AND CONVERSION
  • Life and Medical Sciences
  • 1980-1984
  • 1970-1974  (338)
  • 1945-1949
  • 1940-1944
  • 1925-1929
  • 1974  (338)
Collection
Publisher
Years
  • 1980-1984
  • 1970-1974  (338)
  • 1945-1949
  • 1940-1944
  • 1925-1929
Year
  • 1
    Publication Date: 2016-06-07
    Description: Extensive geological and geophysical surveys were carried out at the Marysville geothermal area during 1973 and 1974. The area has high heat flow (up to microcalories per square centimeter-second, a negative gravity anomaly, high electrical resistivity, low seismic ground noise, and nearby microseismic activity. Significant magnetic and infrared anomalies are not associated with the geothermal area. The geothermal anomaly occupies the axial portion of a dome in Precambrian sedimentary rocks intruded by Cretaceous and Cenozoic granitic rocks. The results from a 2.4-km-deep test well indicate that the cause of the geothermal anomaly is hydrothermal convection in a Cenozoic intrusive. A maximum temperature of 95 C was measured at a depth of 500 m in the test well.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: JPL Proc. of the Conf. on Res. for the Develop. of Geothermal Energy Resources; p 98-110
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  • 2
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    In:  CASI
    Publication Date: 2019-06-27
    Description: Preliminary findings are presented and applications derived from ERTS-1 satellite imagery of the nearshore coastal processes of the California coast. The objectives were to analyze nearshore currents, sediment transport, and estuarine and river discharges along the California coast through the use of synoptic and repetitive imagery from ERTS as well as aircraft underflights and surface data. The major conclusions are: (1) Distinct seasonal patterns for sediment transport as a function of the oceanic current systems and coastal morphology have been identified. (2) Large scale sediment plumes from intermittent streams and rivers extend offshore to previously unanticipated ranges. (3) Computer generated contouring of radiance levels from computer-compatible tapes result in charts that can be used for determination of surface and nearsurface suspended sediment distribution. (4) Flying spot scanner enhancements result in details of nearshore features. (5) Data is providing significant information for coastal planning and construction projects.
    Keywords: GEOPHYSICS
    Type: PAPER-M7 , NASA. Goddard Space Flight Center 3d ERTS-1 Symp., Vol. 1, Sect. B; p 1413-1466
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  • 3
    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
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  • 4
    Publication Date: 2019-06-27
    Description: The variability of stratospheric meridional winds is examined in both space and time. Height-latitude sections for January along 70 deg E and 90 deg W show a divergence zone above 50 km near 60 deg N and an intense convergence zone 40 km near 50 deg N over North America. This latter structure, with southward winds in the Arctic and northward winds at mid-latitudes over North America, persists from October through April. Tidal winds dominate all other circulation features in summer at all latitudes, and throughout the year at low latitudes. To help understand the observed patterns of variability, long-term periodic features are analyzed. The quasi-biennial oscillation, annual wave, and four-month wave have amplitudes of about 10, 20, and 10 m/sec respectively in the Arctic near 45 km. The phase of the annual wave changes by nearly 180 deg in a narrow zone near 45 deg N. The semiannual wave has an amplitude of 10 m/sec. 50 deg N above 50 km equinoctial phase dates in the region of maximum amplitude. This polar semiannual wave corresponds closely to that previously found in the zonal wind.
    Keywords: GEOPHYSICS
    Type: NASA-CR-114744 , RR-1
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  • 5
    Publication Date: 2019-07-13
    Description: There are no author-identified significant results in this report.
    Keywords: GEOPHYSICS
    Type: E74-10692 , NASA-CR-139225
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  • 6
    Publication Date: 2019-07-13
    Keywords: GEOPHYSICS
    Type: International Conference on Structure, Composition and General Circulation of the Upper and Lower Atmospheres and Possible Anthropogenic Perturbations; Jan 14, 1974 - Jan 25, 1974; Melbourne; Australia
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  • 7
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 409 (1974), S. 345-352 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On the Existance of Mn (OCOCH3)2 · 2H2OThe existence of manganous acetate dihydrate is predicted and the conditions for its equilibrium existence are proved.The polyterms of solubility of the systems Mn(OCOCH3)2-H2O and Mn(OCOCH3)2- CH3COOH-H2O are studied at 40 and 60°C. The fields of equilibrium existence are determined for the acid manganous acetates of the composition 2 Mn(OCOCH3)2 · CH3COOH · 6H2O and Mn(OCOCH3)2 · CH3COOH · 1.5 H2O at 40°C as well as the fields of the acid salt of the composition Mn((OCOCH3)2 · CH3COOH · H2O a t 60°C. The crystallisation fields of Mn(OCOCH3)2 · 2H2O and Mn(OCOCH3)2 are determined a t 60°C. The results obtained are confirmed by X-ray investigation. The compositions of the solid phases are also determined from thermogravimetric studies.
    Notes: Die Existenz von Mn(OCOCH3)2 · 2 H2O wird vorausgesagt und die Bedingungen für seine Existenz im Gleichgewicht werden bestimmt.Untersucht werden die Löslichkeitsisothermen des Zweistoffsystems Mn(OCOCH3)2-H2O und des Dreistoffsystems Mn(OCOCH3)2-CH3COOH-H2O bei 40 und 60°C. Dabei werden Kristallisationsfelder saurer Acetate folgender Zusammensetzung festgestellt : 2 Mn(OCOCH3)2 · CH3COOH · 6H2O und Mn(OCOCH3)2 · CH3COOH · 1,5 H2O bei 40°C, sowie Mn(OCOCH3)2 · CH3COOH · H2O bei 60°C; bei 60°C ferner Kristallisationsfelder von Mn(OCOCH3)2 · 2H2O und Mn(OCOCH3)2. Diese Ergebnisse wurden auch röntgenographisch und thermogravimetrisch bestätigt.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 409 (1974), S. 106-114 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Katalytische Oxydation von Wasserstoff an NickeloxidenDie katalytische Oxydation von Wasserstoff an hochdispersen sowie gesinterten Nickeloxiden wurde mit einer statischen Methode untersucht und das Vorhandensein zweier verschiedener kinetischer Bereiche festgestellt. Zwischen 0 und 100°C war die anfängliche katalytische Aktivität nicht stationär, und eine stark vergiftende Wirkung des Reaktionsproduktes wurde bei allen Temperaturen bis zu 250°C beobachtet. Die Aktivierungsenergie der Reaktion, die auf den anfänglichen Reaktionsgeschwindigkeiten auf frisch entgasten Oxidoberflächen basiert, wies den kleinen Wert von 1-2 kcal . mol-1 bei beiden Präparaten auf. Im Temperaturbereich zwischen 250 und 350°C wurde eine stationär katalytische Aktivität beobachtet, und die Aktivierungsenergie der Reaktion lag bedeutend höher bei 12-15 kcal . mol-1.Der Wechsel in der Aktivierungsenergie wird mit der Wirkung von unterschiedlichen Sauerstoffarten der Katalysatoroberfläche, die in beiden Temperaturbereichen verschiedene Aktivitäten bei der Reaktion aufweisen, diskutiert. Eine Analogie zwischen der Kohlen- oxid- nnd Wasserstoffoxydation an Nickeloxid wird festgestellt sowie ein Kompensationseffekt für eine Reihe von Oxydationsreaktionen gezeigt.
    Notes: The catalytic oxidation of hydrogen on highly-dispersed and sintered nickel oxides has been studied by a static method and the existence of two different kinetic rcgions established. Between 0 and 100°C the initial catalytic activity was not ionary and a strong poisoning effect of the reaction product was observed at all temperatnres up to 250°C. The activation energy of the reaction based on the initial reaction rates on freshly- outgassed oxide surfaces had a low value of 1-2 kcal. mole-1 with both preparations. Between 250 and 350°C stationary catalytic activity was observed and the activation energy of the reaction was significantly higher, 12-14 kcal . mole-1.The change of the activation energy is discussed in terms of the participation in the reaction of oxygen species in the catalyst surface layer which have different reactivities in the two temperature regions. A close analogy is noted between the carbon monoxide and hydrogen oxidation reactions on nickel oxide and a compensation effect is illustrated for a series of oxidation reactions on the oxide.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
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  • 9
    Publication Date: 2011-08-16
    Description: Consideration of the use of remote sensing technology applied from satellites to obtain information for the rapid and continuing assessment of the hydrologic cycle. A detailed account is given of the hydrological information made available through the activities of the ERTS-1 satellite, an experimental satellite entirely devoted to earth resources observations, and the NOAA-2 satellite, a high-resolution operational environmental satellite. Following a description of the satellites and their payloads, it is shown how with their aid information can be obtained regarding atmospheric moisture, surface water and snow cover, glaciers, potential flood situations, and subsurface water fluctuations. In addition, the use of the ERTS-1 and NOAA-2 satellites in watershed characterization and modeling and in monitoring water quality is discussed.
    Keywords: GEOPHYSICS
    Type: vol. 55; July 197
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  • 10
    Publication Date: 2011-08-16
    Description: The charged particle observations proposed for the new low altitude weather satellites, TIROS-N, are described that will provide the capability of routine monitoring of the instantaneous total energy deposition into the upper atmosphere by the precipitation of charged particles from higher altitudes. Estimates are given to assess the potential importance of this type of energy deposition. Discussion and examples are presented illustrating the importance in distinguishing between solar and geomagnetic activity as possible causative sources.
    Keywords: GEOPHYSICS
    Type: NASA. Goddard Space Flight Center Possible Relationships between Solar Activity and Meteorol. Phenomena; p 250-257
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