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  • METEOROLOGY AND CLIMATOLOGY  (5)
  • Inorganic Chemistry  (3)
  • Polymer and Materials Science  (2)
  • 1975-1979  (10)
  • 1955-1959
Collection
Keywords
Publisher
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    Schadstoff-Kontrolle und industrielle Konzentrationsmessungen mit neuen potentiostatischen MeßanordnungenVortrag auf der ACHEMA, Ausstellungstagung für Chemisches Apparatewesen, 20. bis 26. Juni 1976 in Frankfurt/M. (1977)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 49 (1977), S. 665-665 
    Details
    ISSN: 0009-286X
    Keywords: Kleinanalysatoren ; Wasseranalytik ; Sauerstoff (-Spuren) ; Ozon ; Schadstoffkontrolle ; Cyanide ; Hydrazin ; Kesselspeisewasser ; Trinkwasser ; Bier ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330490817
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  • 2
    Electronic Resource
    Electronic Resource
    Schadstoffanalyse mit potentiostatischen MeßverfahrenVortrag von B. Kropp auf der Tagung der GDCh-Fachgruppe „Angewandte Elektrochemie“, 4. bis 6. Okt. 1978 in Berlin. (1979)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 51 (1979), S. 628-634 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330510611
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  • 3
    Electronic Resource
    Electronic Resource
    Darstellung und Kristallstruktur von Gold-Barium-Thiostannat(lV), Au2,BaSnS4 (1978)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 445 (1978), S. 193-201 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Preparation and crystal Structure of Gold Barium Thiostannate(IV), Au2,BaSnS4Preparation and properties of the hitherto unknown Au2,BaSnS4 are reported. The single crystal X-ray analysis shows that the crystals form mosaic blocks. The units cell has orthorhombic symmetry with a = 1098.2 ± 0.4; b = 1109.3 ± 0.4; c = 665.2 ± 0.4 pm and contains Z = 4 formula units. Space group: D23—P21212 (No. 18). The crystal structure is discussed in respect of those of Cu2BaSnS4 [1] and Ag2BaSnS4 [2, 3] known from our earlier communications.
    Notes: Es wird über die Darstellung und die Eigenschaften der neuen Verbindung Au2,BaSnS4 berichet. Die Strukturanalyse mit Röntgeneinkristalldaten ergibt eine Blockstruktur mit: a = 1098,2 ± 0,4; b= 1109,3 ± 0.4; c = 665,2 ± 0,4 pm, Raumgruppe D23—P21212 (Nr. 18) orthorhombisch und Z = 4 Formeleinheiten pro Elementarzelle. Die Kristallstruktur von Au2,BaSnS4 wird beschrieben und zusammen mit den Ergebnissen früherer Untersuchungen an Cu2BaSnS4[1] und Ag2,BaSnS4 [2, 3] diskutiert.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19784450124
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  • 4
    Electronic Resource
    Electronic Resource
    Darstellung und Kristallstruktur von Cu2SrSnS4 (1976)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 419 (1976), S. 67-76 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Preparation and Crystal Structure of Cu2SrSnS4Cu2SrSnS4 was prepared from a mixture of the three binary sulfides at 620-700° C. The structure analyses by single crystal X-ray investigations yields a trigonal C-symmetrie for the unit of the structure with a = 6.290 and c = 15.578 Å and three formula units. Space group: C32-P31 (No. 144). Copper and tin have tetrahedral surrounding of S2-. The neighbourhood of Sr2+ has the shape of a deformed archimedic antiprisma.
    Notes: Cu2SrSnS4 wurde aus einem Gemisch der drei binären Sulfide bei 620-700°C dargestellt. Die Strukturanalyse mit Einkristall-Röntgenbeugungsdaten ergab trigonale C-Symmetrie mit a = 6,29o und c = 15,578 Å und drei Formeleinheiten pro Elementarzelle. Raumgruppe: C32-P31 (Nr. 144). Kupfer und Zinn sind tetraedrisch von S2- umgeben. Das Sr2+ hat 8 nächste Schwefelnachbarn in der Anordnung eines verzerrten archimedischen Antiprismas.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19764190112
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  • 5
    Electronic Resource
    Electronic Resource
    Präparative und röntgenographische Untersuchung am System Cu2-xAgxBaSnS4 (1976)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 426 (1976), S. 281-287 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Experimental and X-ray Investigations of the System Cu2-xAgxBaSnS4A description of the preparation, properties and the x-ray investigations of Cu2BaSnS4 (A) and Ag2BaSnS4 (B) is given. (A) crystallizes trigonal. Space group: C32-P31, a = 6.367 and c= 15.833 Å. (A) is isotypic with Cu2SrSnS4 [1]. (B) has an orthorhombic unit cell: a = 7.127, b = 8.117, c = 6.854 Å. The x-ray investigation of the system Cu2-xAgxBaSnS4 (0 ≤ x ≤ 2) yields a homogenity range of (0 ≤ x ≤ 0.65) for (A) and for (B) (1.7 〈 x ≤ 2).
    Notes: Es wird über die Darstellung, die Eigenschaften und die röntgenographische Untersuchung von Cu2BaSnS4 (A) und Ag2BaSnS4 (B) berichtet. (A) kristallisiert trigonal,  -  Raumgruppe C32-P31 mit a = 6,367 und c = 15,833 Å  -  und ist mit Cu2SrSnS4 [1] isotyp. (B) hat eine orthorhombische Elementarzelle: a = 7,127, b = 8,117 und c = 6,854 Å. Die röntgenographische Systemuntersuchung an Cu2-xAgxBaSnS4 ( o ≤ x ≤ 2) ergibt die Phasenbreite: ( 0 ≤ x ≤ 0,65) für (A) und für (B) (1,7 〈 〈 x ≤ 2).
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19764260308
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  • 6
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    Model predictions of wind and turbulence profiles associated with an ensemble of aircraft accidents (1977)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The feasibility of predicting conditions under which wind/turbulence environments hazardous to aviation operations exist is studied by examining a number of different accidents in detail. A model of turbulent flow in the atmospheric boundary layer is used to reconstruct wind and turbulence profiles which may have existed at low altitudes at the time of the accidents. The predictions are consistent with available flight recorder data, but neither the input boundary conditions nor the flight recorder observations are sufficiently precise for these studies to be interpreted as verification tests of the model predictions.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: NASA-CR-2884 , M-225
    Format: application/pdf
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  • 7
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    Turbulent transport model of wind shear in thunderstorm gust fronts and warm fronts (1978)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: A model of turbulent flow in the atmospheric boundary layer was used to simulate the low-level wind and turbulence profiles associated with both local thunderstorm gust fronts and synoptic-scale warm fronts. Dimensional analyses of both type fronts provided the physical scaling necessary to permit normalized simulations to represent fronts for any temperature jump. The sensitivity of the thunderstorm gust front to five different dimensionless parameters as well as a change from axisymmetric to planar geometry was examined. The sensitivity of the warm front to variations in the Rossby number was examined. Results of the simulations are discussed in terms of the conditions which lead to wind shears which are likely to be most hazardous for aircraft operations.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: NASA-CR-3002 , ARAP-327
    Format: application/pdf
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  • 8
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    Turbulent transport model of a thunderstorm gust front (1977)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: A second-order closure turbulent model is adopted to predict complex fluid flows; few a priori assumptions about the internal turbulent and mean flow structures are required. The flow simulations are applied to the analysis of local gust fronts generated by rain-cooled outflows from severe thunderstorms. Results of the simulations provide a means for discussing the behavior of an aircraft passing through a thunderstorm-related downdraft.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: Conference on Severe Local Storms; Oct 18, 1977 - Oct 21, 1977; Omaha, NE
    Format: text
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  • 9
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    Micrometeorological applications of a second-order closure model of turbulent transport (1979)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Recent applications of the turbulent transport model originally developed by Donaldson to some problems of practical importance in micrometeorology are discussed. Four particular examples considered are the local boundary layer gust front emanating from a thunderstorm; the low-level wind and turbulent distributions of a tornado; the transport of momentum, heat and species within a surface layer canopy, and longitudinal roll vortices in the unstable planetary boundary layer. Results for the last example are discussed in some detail. Comparisons are made between a one-dimensional and a two-dimensional computation of this phenomenon.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: Symposium on Turbulent Shear Flows; Jul 02, 1979 - Jul 04, 1979; London
    Format: text
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  • 10
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    The prediction of turbulence and wind shear associated with thunderstorm gust fronts (1978)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: The parametric dependence of storm simulation is explored on the basis of the previously reported (1977) second-order closure model of turbulence designed to simulate a thunderstorm gust front. The model simulation results are intended for extrapolation to the conditions considered most hazardous to aircraft operation. It is shown that the presistence and strength of the gust front are enhanced significantly by increasing the spread of the downdraft shaft and the velocity at the top of the domain. Turbulence develops in the regions of high shear and is most intense near the corner and within the gust front itself. While the center shaft is certainly an area to be avoided, the gust front region is probably more critical because it may extend over a large region far from the center of the downdraft, in a highly transient state.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: Conference on Atmospheric Environment of Aerospace Systems and Applied Meteorology; Nov 14, 1978 - Nov 16, 1978; New York, NY
    Format: text
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