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  • Ertrag  (10)
  • AERODYNAMICS
  • Aerodynamics
  • Animals
  • EARTH RESOURCES AND REMOTE SENSING
  • 1980-1984
  • 1955-1959
  • 1925-1929  (13)
  • 1926  (13)
Collection
Keywords
Years
  • 1980-1984
  • 1955-1959
  • 1925-1929  (13)
Year
  • 1
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    Über Beziehungen zwischen der Witterung und den Ernteerträgen in Preußen (1926)
    In:  Landwirtschaftl. Jahrbuch 64:241-296
    Details
    Publication Date: 1926
    Description: Zusammenhang zwischen Niederschlag, Temperatur und Erträgen. Untersucht wurden Winterweizen, Winterroggen, Sommergerste, Sommerroggen, Kartoffeln, Futterpflanzen und Wiesen KATASTER-BESCHREIBUNG: Einfluss der Witterungsfaktoren Niederschlag und Temperatur auf die Ernteerträge KATASTER-DETAIL: Delta Nied +, dann Erträge (Halmfrüchte und Kartoffeln) + und später -; Delta T -, dann Erträge +,
    Keywords: Deutsches Reich (östl. u. westl. Provinzen, Hannover, Sachsen, Rheinland) ; 1899-1913 ; Ertrag ; Getreide ; Rangordnungsmethode ; Witterung ; Hackfrüchte
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  • 2
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    Korrelation zwischen Getreideernten und Monatssummen der Niederschläge in Baden (1926)
    In:  Diss.; Freiburg
    Details
    Publication Date: 1926
    Description: Abhängigkeit der Getreideerträge von Witterungseinflüssen mithilfe der Korrelationsmethode in 11 orographisch abgegrenzen Gebieten KATASTER-BESCHREIBUNG: Korrelation zwischen der Abweichung vom 11, bzw. 30jährigen monatlichen Mittel (April-Juli) der Niederschläge und dem Ertrag von Getreidearten (Weizen, Dinkel, Roggen, Gerste, Hafer) KATASTER-DETAIL: Nied 〉 (11, bzw. 30jährigen monatlichen Mittel von 1888-1898 und 1888-1917 im Monat Mai, je nach Region 55-158mm), dann höchste Übereinstimmung der Korrelationskoeffienten für die Ertragszunahme über alle Kulturen
    Keywords: Baden ; 1888-1898 und 1888-1917 ; Ertrag ; Getreide ; Korrelationsmethode ; Niederschlag ; Temperatur ; Witterung
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  • 3
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    Studien über den Nutzwert von Gräsern und Kleearten unter dem Einfluss von Klima und Boden. (1926)
    In:  Landwirtschaftl. Jahrbuch (64)817-930.
    Details
    Publication Date: 1926
    Description: Zusammenhang Klima, Witterung und Ertrag von Gräsern und Klee KATASTER-BESCHREIBUNG: KATASTER-DETAIL:
    Keywords: Deutschland ; Boden ; Ertrag ; Klima ; Landwirtschaft
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  • 4
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    Die Phänologie und ihre Bedeutung unter besonderer Berücksichtigung der phänol. Beobachtungen am Winterroggen in Bayern während der Jahre 1917-1923 (1926)
    In:  Naturw. und Landw. Heft 8 Freising-München, F.P. Datterer & cle
    Details
    Publication Date: 1926
    Description: Diskussion über die Geschichte, Entwicklung und Anwendbarkeit von phänologischen Studien, Zusammenfassung, teilweise Details über den Einfluss der Sorte, der Düngung, des Bodens, Klimas, Längengrades, Krankheiten und anderer Faktoren auf die Erträge von Winterroggen in Bayern KATASTER-BESCHREIBUNG: KATASTER-DETAIL:
    Keywords: Bayern ; 1917-1923 ; Botanik ; Ertrag ; Klima ; Niederschlag ; Pflanzenschädling ; Phänologie ; Roggen ; Düngung ; Frost
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  • 5
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    Wie beeinflußt die Witterung den Stärkegehalt der Kartoffeln? (1926)
    In:  Die Kartoffel, S. 66
    Details
    Publication Date: 1926
    Description: Zusammenhang zwischen der Witterung und der Stärkeeinlagerung bei Kartoffeln KATASTER-BESCHREIBUNG: KATASTER-DETAIL:
    Keywords: Kartoffeln ; Ertrag ; Witterung
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  • 6
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    Sur la non-correlation en France entire les plumies et de Recoltes (1926)
    In:  Métérologie 2: 412-414
    Details
    Publication Date: 1926
    Description: Diskussion über den Zusammenhang von Niederschlag, Temperatur und Ertrag KATASTER-BESCHREIBUNG: KATASTER-DETAIL:
    Keywords: Frankreich ; 1900-1925 ; Ertrag ; Landwirtschaft ; Niederschlag ; Temperatur
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  • 7
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    Untersuchungen über Beziehungen zwischen Witterung und Ernteertrag in der Landwirtschaft (1926)
    In:  Zeitschrift für Pflanzenernährung, Düngung, Bodenkunde 16.
    Details
    Publication Date: 1926
    Description: Beziehungen zwischen Witterung und Ernteertrag KATASTER-BESCHREIBUNG: KATASTER-DETAIL:
    Keywords: Hohenheim (Baden-Württemberg) ; 1914-25 ; Ertrag ; Witterung
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  • 8
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    Die Beziehung zwischen Ernte und Witterung in der Landwirtschaft (1926)
    In:  Landw. Jahrbuch Berlin 63(1):1-81
    Details
    Publication Date: 1926
    Description: Auszug aus der Diss. KATASTER-BESCHREIBUNG: Beziehungen zwischen Witterung (Temperatur und Niederschlag)und Ernte KATASTER-DETAIL:
    Keywords: Göttingen ; 1901-1922 ; Ertrag ; Korrelationsmethode ; Niederschlag ; Temperatur ; Witterung ; Hackfrüchte ; Erbsen
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  • 9
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    Die "kritischen Zeiten" und das "ökologische Optimum" der Witterungsfaktoren, ein Mittel zur Bestimmung der Ernteertäge (1926)
    In:  Zeitschrift für Acker- und Pflanzenbau 3:330-334.
    Details
    Publication Date: 1926
    Description: Angabe von Niederschlagsmengen und Durchschnittstemperaturen für das ökologische Optimum bestimmter Sorten, kritische Zeiten (vor und nach der Blüte) sind hierfür entscheidend KATASTER-BESCHREIBUNG: Einfluss von Wasser und Wärme, bzw. Niederschlag und Temperatur auf den Ertrag KATASTER-DETAIL: Roggen, Weizen: Delta Nied (Beginn Blütezeit)-, dann Ertrag +; Hafer, Gerste, Kartoffel: Delta T (Beginn der Blüte) -, dann Ertrag +; Bohne: Delta T (gesamte Wachstumszeit)+ und Delta Nied (gesamte Wachstumszeit) +, dann Ertrag +
    Keywords: Göttingen ; 1901-22 ; Kartoffeln ; Ertrag ; Getreide ; Hafer ; Klima ; Korrelationsmethode ; Niederschlag ; Roggen ; Temperatur ; Weizen ; Witterung ; Hackfrüchte ; Erbsen
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  • 10
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    Über einige Zusammenhänge zwischen Klima und Boden in Europa (1926)
    In:  In: Chemie der Erde, Jena
    Details
    Publication Date: 1926
    Description: Beziehung zwischen Klima, Boden und Ertragsfähigkeit allgemein KATASTER-BESCHREIBUNG: KATASTER-DETAIL:
    Keywords: Europa ; letzten 2000 Jahre ; Boden ; Ertrag ; Forst ; Klima
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  • 11
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    Lattice arrangements for rapid convergence (1926)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: A simple, systematic, optimized vortex-lattice approach is developed for application to lifting-surface problems. It affords a significant reduction in computational costs when compared to current methods. Extensive numerical experiments have been carried out on a wide variety of configurations, including wings with camber and single or multiple flaps, as well as high-lift jetflap systems. Rapid convergence as the number of spanwise or chordwise lattices are increased is assured, along with accurate answers. The results from this model should be useful not only in preliminary aircraft design but also, for example, as input for wake vortex roll-up studies and transonic flow calculations.
    Keywords: AERODYNAMICS
    Type: NASA. Langley Res. Center Vortex-Lattice Utilization; p 325-342
    Format: application/pdf
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  • 12
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    Inertia Factors of Ellipsoids for Use in Airship Design (1926)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: This report is based on a study made by the writer as a member of the Special Committee on Design of Army Semirigid Airship RS-1 appointed by the National Advisory Committee for Aeronautics. The increasing interest in airships has made the problem of the potential flow of a fluid about an ellipsoid of considerable practical importance. In 1833 George Green, in discussing the effect of the surrounding medium upon the period of a pendulum, derived three elliptic integrals, in terms of which practically all the characteristics of this type of motion can be expressed. The theory of this type of motion is very fully given by Horace Lamb in his "Hydrodynamics," and applications to the theory of airships by many other writers. Tables of the inertia coefficients derived from these integrals are available for the most important special cases. These tables are adequate for most purposes, but occasionally it is desirable to know the values of these integrals in other cases where tabulated values are not available. For this reason it seems worth while to assemble a collection of formulae which would enable them to be computed directly from standard tables of elliptic integrals, circular and hyperbolic functions and logarithms without the need of intermediate transformations. Some of the formulae for special cases (elliptic cylinder, prolate spheroid, oblate spheroid, etc.) have been published before, but the general forms and some special cases have not been found in previous publications. (author)
    Keywords: Aerodynamics
    Type: NACA-TR-210
    Format: application/pdf
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  • 13
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    Water Model Tests for Semirigid Airships (1926)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: The design of complicated structures often presents problems of extreme difficulty which are frequently insoluble. In many cases, however, the solution can be obtained by tests on suitable models. These model tests are becoming so important a part of the design of new engineering structures that their theory has become a necessary part of an engineer's knowledge. For balloons and airships water models are used. These are models about 1/30 the size of the airship hung upside down and filled with water under pressure. The theory shows that the stresses in such a model are the same as in the actual airship. In the design of the Army Semirigid Airship RS-1 no satisfactory way was found to calculate the stresses in the keel due to the changing shape of the bag. For this purpose a water model with a flexible keel was built and tested. This report gives the theory of the design, construction, and testing of such a water model.
    Keywords: Aerodynamics
    Type: NACA-TR-211
    Format: application/pdf
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