ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Other Sources  (299)
  • 1980-1984
  • 1925-1929  (299)
  • 1929  (161)
  • 1925  (138)
  • 1
    facet.materialart.
    Unknown
    Gustav Fischer
    In:  Veröffentlichungen der Reichsanstalt für Erdbebenforschung in Jena, Jena, Gustav Fischer, vol. 3, no. 3, pp. 29-48 + 18 S. Tafeln, pp. L24306, (ISBN: 0534351875, 2nd edition)
    Publication Date: 1925
    Keywords: Earthquake ; Seismology
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 2
    facet.materialart.
    Unknown
    In:  Zeitschrift für Geophysik, Jena, Gustav Fischer, vol. 1, no. 3, pp. 165-166, pp. L24306, (ISBN: 0534351875, 2nd edition)
    Publication Date: 1925
    Keywords: NOISE ; Seismology
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 3
    facet.materialart.
    Unknown
    In:  Abhandlungen der Senckenbergischen Naturforschenden Gesellschaft, Jena, Gustav Fischer, vol. 40, no. 3, pp. 57-88, pp. L24306, (ISBN: 0534351875, 2nd edition)
    Publication Date: 1925
    Keywords: Earthquake catalog ; Seismology ; Earthquake
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 4
    facet.materialart.
    Unknown
    In:  Internationale Bergwirtschaft, Jena, Gustav Fischer, vol. 1, no. 3, pp. 52-53, pp. L24306, (ISBN: 0534351875, 2nd edition)
    Publication Date: 1925
    Keywords: Applied geophysics
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 5
    facet.materialart.
    Unknown
    In:  Gerlands Beiträge zur Geophysik, Milano, Gustav Fischer, vol. 24, no. 3, pp. 76, pp. L24306, (ISBN: 0534351875, 2nd edition)
    Publication Date: 1929
    Keywords: Geothermics
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 6
    facet.materialart.
    Unknown
    Bornträger
    In:  Berlin, 8 + 168 S., Bornträger, vol. 3, no. Subvol. b, pp. 220, (ISBN 0-12-305355-2)
    Publication Date: 1925
    Keywords: Textbook of geophysics ; Seismology ; Earth model, also for more shallow analyses !
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 7
    facet.materialart.
    Unknown
    Bornträger
    In:  Professional Paper, Handbuch der Geophysik, Volume 4: Erdbeben (finished), 12 + 1202 S., Berlin, Bornträger, vol. 3, no. VIIa, pp. 151-263, (ISBN: 3-540-23712-7)
    Publication Date: 1929
    Keywords: Review article ; Seismology ; Instruments ; Seismometer
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 8
    facet.materialart.
    Unknown
    In:  Zeitschrift für Geophysik, Jena, Gustav Fischer, vol. 1, no. 3, pp. 260-262, pp. L24306, (ISBN: 0534351875, 2nd edition)
    Publication Date: 1925
    Keywords: TIDES ; NOISE
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 9
    facet.materialart.
    Unknown
    In:  Physikalische Zeitschrift, Jena, Gustav Fischer, vol. 26, no. 3, pp. 258-260, pp. L24306, (ISBN: 0534351875, 2nd edition)
    Publication Date: 1925
    Keywords: Earth model, also for more shallow analyses ! ; Seismology
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 10
    facet.materialart.
    Unknown
    In:  Die Naturwissenschaften, Jena, Gustav Fischer, vol. 13, no. 3, pp. 360-362, pp. L24306, (ISBN: 0534351875, 2nd edition)
    Publication Date: 1925
    Keywords: Earth model, also for more shallow analyses ! ; Seismology ; Velocity analysis
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 11
    facet.materialart.
    Unknown
    In:  Scientia, Milano, Gustav Fischer, vol. 23, no. 3, pp. 375-384, pp. L24306, (ISBN: 0534351875, 2nd edition)
    Publication Date: 1929
    Keywords: Seismology ; Geothermics ; Seismicity ; Tectonics
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 12
    facet.materialart.
    Unknown
    In:  Gerlands Beiträge zur Geophysik, Milano, Gustav Fischer, vol. 23, no. 3, pp. 22-34, pp. L24306, (ISBN: 0534351875, 2nd edition)
    Publication Date: 1929
    Keywords: Earthquake
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 13
    facet.materialart.
    Unknown
    In:  Physikalische Zeitschrift, Milano, Gustav Fischer, vol. 30, no. 3, pp. 230-231, pp. L24306, (ISBN: 0534351875, 2nd edition)
    Publication Date: 1929
    Keywords: Seismology ; Elasticity ; Waves ; Inelastic ; Fluids
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 14
    facet.materialart.
    Unknown
    In:  Gerlands Beiträge zur Geophysik, Milano, Gustav Fischer, vol. 22, no. 3, pp. 100-102, pp. L24306, (ISBN: 0534351875, 2nd edition)
    Publication Date: 1929
    Keywords: Seismology ; Seismometer ; Nearfield
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 15
    facet.materialart.
    Unknown
    In:  Natur und Museum, Milano, Gustav Fischer, vol. 59, no. 3, pp. 477-487, pp. L24306, (ISBN: 0534351875, 2nd edition)
    Publication Date: 1929
    Keywords: Tectonics ; Earth model, also for more shallow analyses !
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 16
    Publication Date: 1929
    Description: Ergebnisse (Rangordungs- und Korrelationsmethode) der Beziehung zwischen Witterung und Ertrag vieler Kulturen eingeteilt nach Monaten KATASTER-BESCHREIBUNG: Einfluss der Temperatur und des Niederschlags auf den Ertrag folgender Kulturpflanzen: Winterweizen, Winterroggen, Dinkel, Sommerweizen, Sommerroggen, Sommergerste, Hafer, Hopfen, Luzerne, Rotklee, Wiesen, Kartoffeln) KATASTER-DETAIL: Delta T (Vegetationszeit) -, dann Ertrag (Winter- und Sommergetreide) +; Delta T (Winter, Juni und Juli) -, dann Ertrag (Sommergetreide) +; Delta Nied (Winter) +, dann Ertrag (Getreide) -; Delta T (September) - und Delta Nied (Vegetationszeit) +, dann Ertrag (Futterpflanzen) +; Details für einzelne Kulturpflanzen: siehe Artikel
    Keywords: Württemberg ; 1899-1913 ; Ertrag ; Hafer ; Korrelationsmethode ; Niederschlag ; Rangordnungsmethode ; Temperatur ; Weizen ; Witterung
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 17
    facet.materialart.
    Unknown
    In:  Wisss.Arch. Landw. Abt. A, Pflanzenbau 1:273-329.
    Publication Date: 1929
    Description: Untersuchungen zum Zusammenhang zwischen Klima und Landwirtschaft KATASTER-BESCHREIBUNG: Einfluss der Temperatur, Sonnenscheindauer, Niederschlag und Wind auf das Pflanzenwachstum KATASTER-DETAIL: Delta T -, dann Ertrag -; Delta Nied +, dann Ertrag (Hafer) +; Delta Sonn (September) +, dann Zuckergehalt (Rüben) +; Delta Nied - und Delta T +, Roggenanbaufläche 〉 Haferanbaufläche; Delta Nied (Sommer) +, dann Qualität Getreide -; Delta Nied (Juni, Juli) +, dann Ertrag (Kartoffeln) +; Delta T (Frühjahr) -, dann Saatkartoffeln +; Delta Nied +, dann Umfang Kleeflächen +;
    Keywords: Schlesien ; 1910-1914 ; Landwirtschaft ; Niederschlag ; Temperatur ; Wind ; Sonnenscheindauer
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 18
    facet.materialart.
    Unknown
    In:  Weinbau und Kellerwirtschaft, 8. Jahrgang, Nr. 19, p. 183-186
    Publication Date: 1929
    Description: Bericht über die Beobachtungen zur Frostresistenz von Insekten KATASTER-BESCHREIBUNG: Frosteinwirkung scheint die Entwicklung der Insekten nicht zu behindern KATASTER-DETAIL: -
    Keywords: Baden ; 1928-1929 ; Insekten ; Forst ; Pflanzenschädling
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 19
    Publication Date: 1925
    Description: Beobachtungen zum Befall von Winterroggen durch Puccinia coronifera Kleb. und Überlegungen für mögliche Gründe KATASTER-BESCHREIBUNG: Aufgrund der starken Trockenheit verliert der Roggen seine Immunität gegenüber Puccinia coronifera KATASTER-DETAIL: Delta Nied (Herbst) -, dann Befall von Puccinia coronifera +
    Keywords: Kamennaja Step, Russland ; 1924 ; Pflanzenkrankheit ; Roggen ; Trockenheit
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 20
    facet.materialart.
    Unknown
    In:  Deutsche Landwirtschaftliche Presse, Jahrgang 52, Nr. 38, p. 450
    Publication Date: 1925
    Description: Allgemeine Beobachtungen zum Rostbefall von Weizen im Jahr 1925 trotz langer Trockenperioden KATASTER-BESCHREIBUNG: Einfluss des Niederschlags auf die Infektion; auch kurze starke Niederschläge zwischen langen Trockenperioden sind ausreichend um einen großflächigen Befall zu bewirken. KATASTER-DETAIL: Delta Nied +, dann Infektion +;
    Keywords: Deutschland ; 1925 ; Anbautermine ; Niederschlag ; Pflanzenkrankheit ; Trockenheit ; Weizen
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 21
    facet.materialart.
    Unknown
    In:  Bad. Blätt. Schädlingsbek. 1, p. 67-68
    Publication Date: 1925
    Description: Allgemeine Beobachtungen zur Biologie und zum Auftreten des Getreidehähnchens sowie Möglichkeiten zu dessen Bekämpfung KATASTER-BESCHREIBUNG: - KATASTER-DETAIL: -
    Keywords: Baden-Württemberg ; 1924-1925 ; Hafer ; Mais ; Pflanzenschädling ; Weizen ; Gerste
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 22
    facet.materialart.
    Unknown
    In:  Die kranke Pflanze 2, p. 117-119
    Publication Date: 1925
    Description: Allgemeine Beobachtungen zum Auftreten und zur Wanderung des Getreidelaufkäfers und dessen Larven; Nennung von Möglichkeiten zur Bekämpfung des Insekts KATASTER-BESCHREIBUNG: Abhängigkeit der Stärke des Auftretens von der Temperatur KATASTER-DETAIL: Delta T+, dann Auftreten der Larven +
    Keywords: Sachsen ; Beginn 20. Jahrhundert ; Insekten ; Boden ; Ertrag ; Getreide ; Landwirtschaft ; Pflanzenschädling ; Roggen ; Temperatur ; Weizen
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 23
    Publication Date: 1929
    Description: Einfluss der Witterung ist Gattungs- teils sortenabhängig, und wechselt mit der Lage der Orte. Trockenheit im Vorjahr begünstigt die Ernteerträge, KATASTER-BESCHREIBUNG: Trockenheit im Vorjahr begünstigt verbunden mit hoher Temperatur, geringer Luftfeuchtigkeit und langer Sönnenscheindauer, mit niedriger Temperatur, hoher Luftfeuchte, kurzer Sonnenscheindauer im Erntejahr, wirkt positiv auf die Ernteerträge für bestimmte Apfel - und Birnensorten, umgekehrte Beziehung insbesondere bei Früh-, Herbst- und Winterbirnensorten KATASTER-DETAIL:
    Keywords: Niedersachsen ; 1900-1923 ; Apfel ; Ertrag ; Trockenheit ; Witterung ; Obst ; Birne
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 24
    Publication Date: 1929
    Description: vgl. Neustädt KATASTER-BESCHREIBUNG: Zusammenhang Witterungsfaktoren in wachstumsrelevanten Zeitspannen mit dem Ertrag verschiedener Kulturen KATASTER-DETAIL: Delta Nied (Oktober bis März) -, dann Erträge (Roggen) +; Delta Nied (Januar) -, dann Erträge (Roggen) ++; Delta Nied (Februar) +, dann Erträge (Roggen) +; Delta Nied (Mai) +, dann Erträge (Roggen) +; Delta Nied (Mai) 〉 1,5x Mittel, dann Erträge -; Delta Sonn (Mai, im Bezirk Köthen) +, dann Erträge (Roggen) -; Delta Nied (Januar, März, April) -, dann Erträge (Sommergerste) +; Delta Nied (Februar, Mai bis Ernte) +, dann Erträge (Sommergerste) +; Delta Nied (Mai) +, dann Erträge (Sommergerste) ++; (Informationen zu den weiteren landwirtschaftlicher Kulturpflanzen: siehe Artikel)
    Keywords: Mitteldeutschland ; 1900-1926 ; Kartoffeln ; Ertrag ; Niederschlag ; Roggen ; Temperatur ; Witterung ; Hackfrüchte
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 25
    Publication Date: 1929
    Description: Einfluß der Witterung auf die Qualität von Weizen KATASTER-BESCHREIBUNG: Witterungsverhältnisse der letzten 5 bis höchstens 10 Tage vor der Gelbreife sind von entscheidendem Einfluss, Backqualität nimmt von kontinentalem zum maritimen Klima ab KATASTER-DETAIL: Tmit+, Sonn+, Nied-, dann gute Qualität Nied+, dann Tausendkorngewicht + aber Nied**, dann Tausendkorngewicht - und N-Gehalt +
    Keywords: Mitteldeutschland ; 1900-1925 ; Ertrag ; Korrelationsmethode ; Landwirtschaft ; Niederschlag ; Temperatur ; Trockenheit ; Weizen ; Witterung ; Sonnenscheindauer
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 26
    facet.materialart.
    Unknown
    In:  Artikel; Philosophical Transactions of the Royal Society of London. Series B, Containing Papers of a Biological Character 213(402-410): 89-142.
    Publication Date: 1925
    Description: Langjährige Feldversuche und Wetteraufzeichnungen der Versuchstation, Korrelationen zwischen Niederschlag und Ernteerträgen KATASTER-BESCHREIBUNG: Einfluss des Niederschlags auf den Ertrag KATASTER-DETAIL: Delta Nied -, dann Erträge +
    Keywords: Rothamsted (England) ; 1854-1918 ; Ertrag ; Niederschlag ; Weizen ; Düngung
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 27
    facet.materialart.
    Unknown
    In:  Buch von: Höhne, E., (1919): Landwirtschaftlich-klimatologische Untersuchung des Gebietes zwiwchen mittlerer Saale und Pleiße und Einteilung in klimatische Unterbezirke auf Grund der Beziehungen zwischen Witterungsfaktoren und Ernteerträgen
    Publication Date: 1929
    Description: Untersuchung zur Beziehung zwischen Witterungsfaktoren und Ernteerträgen in verschiedenen Untersuchungsgebieten mittels Rangordnungsdifferenzen. Betrachtet wurden die Erträge von Roggen, Winterweizen, Sommergerste, Hafer, Sommerweizen, Zuckerrübe, Kartoffel und Erbse KATASTER-BESCHREIBUNG: Einfluss der Witterung (Niederschlag, Temperatur, Sonnenschein) auf die Erträge KATASTER-DETAIL: Delta Nied (Oktober bis März) -, dann Erträge (Roggen) +; Delta Nied (Januar) -, dann Erträge (Roggen) ++; Delta Nied (Februar) +, dann Erträge (Roggen) +; Delta Nied (Mai) +, dann Erträge (Roggen) +; Delta Nied (Mai) 〉 1,5x Mittel, dann Erträge -; Delta Sonn (Mai, im Bezirk Köthen) +, dann Erträge (Roggen) -; Delta Nied (Januar, März, April) -, dann Erträge (Sommergerste) +; Delta Nied (Februar, Mai bis Ernte) +, dann Erträge (Sommergerste) +; Delta Nied (Mai) +, dann Erträge (Sommergerste) ++; Köthen (Nied 15-30mm im März), (Delta T- im April/Juni, besonders im Mai), dann Winterweizenertrag++ (weitere Informationen zu den weiteren landwirtschaftlicher Kulturpflanzen und Regionen: siehe Artikel)
    Keywords: Sachsen und Thüringen ; 1899-1926 ; Boden ; Ertrag ; Getreide ; Klima ; Korrelationsmethode ; Landwirtschaft ; Niederschlag ; Roggen ; Temperatur ; Weizen ; Globalstrahlung ; Hackfrüchte
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 28
    facet.materialart.
    Unknown
    In:  Zeitschrift für Pflanzenernährung, Düngung, Bodenkunde 8:425-458
    Publication Date: 1929
    Description: Auswirkungen über gestaffelte Stickstoff-Düngung auf den Ertrag von Weizen, Gerste, Roggen und Hafer. Angaben zu Temperatur und Niederschlag während der Vegetationszeit, Hinweise auf Zusammenhang zwischen Witterung und Ertrag und Wirkung der Düngung, Bedeutung eines längeren Zeitraums für die Beobachtungen KATASTER-BESCHREIBUNG: Einfluss von Niederschlag und Temperatur auf den Ertrag von Hafer KATASTER-DETAIL: Delta Nied (nach der Saat) +, dann t(Aufgang) - (später); Delta Nied (Ende des Wachstum) -, dann Erträge (Hafer) -; Delta T (20 Tage nach dem Aufgang) +: T 〉 11°C, dann Ertrag (Hafer) -;
    Keywords: Bayern ; 1924-28 ; Ertrag ; Getreide ; Hafer ; Niederschlag ; Roggen ; Temperatur ; Weizen ; Düngung ; Gerste
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 29
    facet.materialart.
    Unknown
    In:  Arb. der Biol. Reichsanstalt Land. und Forstwissenschaft 17:423-434.
    Publication Date: 1929
    Description: Zusammenhang zwischen Temperatur, Sonnenscheindauer und Niederschlag und die Auswirkungen auf Parasiten im Obstbau KATASTER-BESCHREIBUNG: KATASTER-DETAIL:
    Keywords: Niederelbe ; 1896-1928 ; Niederschlag ; Pflanzenkrankheit ; Pflanzenschädling ; Temperatur ; Obst ; Parasit
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 30
    facet.materialart.
    Unknown
    In:  Nachrichtenbl. Deut. Pflanzenschutzdienst 5 (4):25-26.
    Publication Date: 1925
    Description: Schäden an Obst durch Spätfröste im März nach mildem Januar und Februar KATASTER-BESCHREIBUNG: KATASTER-DETAIL:
    Keywords: Berlin-Dahlem ; 1924 ; Forst ; Obst
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 31
    facet.materialart.
    Unknown
    In:  Pflanzenbau, Halbmonatsschrift für Saatwesen, Anbau und Pflege der Kulturpflanzen. II. Jahrgang 1925/26 S.106-108.
    Publication Date: 1925
    Description: Einfluss der Trockenheit im Sommer auf Getreide, Leguminosen und Zuckerrüben KATASTER-BESCHREIBUNG: Einfluss der Temperatur und des Niederschlags auf den Ertrag KATASTER-DETAIL: Delta T (Vorjahreswinter) + und Delta Nied (Sommer) -, dann Pflanzenschädlinge (Erbsenwickler, Fritfliege) +; Delta T (Vorjahreswinter) + und Delta Nied (Sommer) -, dann Ertrag (Kartoffeln) +; Delta T (Vorjahreswinter) + und Delta Nied (Sommer) -, dann Ertrag (Sommergerste) -;
    Keywords: Pommern ; 1925 ; Ertrag ; Getreide ; Niederschlag ; Trockenheit
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 32
    facet.materialart.
    Unknown
    In:  Zeitschr. Zuckerindus Chechsolovak Republic 49:299-305, 307-312.
    Publication Date: 1925
    Description: Korrelation von 6200 Proben zum Zuckergehalt (6200 Proben) und der Niederschlagshöhe an verschiedenen Standorten über einen Beobachtungszeitraum von 5 Jahren KATASTER-BESCHREIBUNG: KATASTER-DETAIL:
    Keywords: Tschechien ; 1918-23 ; Zuckerrüben ; Korrelationsmethode ; Niederschlag
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 33
    facet.materialart.
    Unknown
    In:  Landw. Jahrbuch 68:537-558
    Publication Date: 1929
    Description: Untersuchungen der Beziehungen zwischen Pferdebohne (Vicia faba L.) und der Witterung. Einteilung des Wachstums in Abschnitte KATASTER-BESCHREIBUNG: Einfluss der Witterung auf die Entwicklung und den Ertrag der Pferdebohne KATASTER-DETAIL: Delta T + und Delta Sonn +, dann Reife + (früher); Delta T +, dann 1. Wachstumsabschnitt (vom Auflaufen bis zum Blütebeginnn) - (kürzer); Delta T + und Delta Sonn +, dann 3. Wachstumsabschnitt (Reifezeit) - (kürzer); Delta T +, dann Gesamtwachstumszeit +; Delta Nied +, dann Gesamtwachstumszeit -; Delta T (Gesamtwachstumszeit,Jugendzeit) +, dann Kornzahl +; Delta Sonn (Blütezeit) +, dann Kornzahl +; Delta Nied +, dann Kornzahl -; Delta T (Reifezeit) - und Delta Nied (Reifezeit) +, dann Pilzbefall + und somit Kornzahl -; Delta T +, dann Kornschwere -; Delta Nied (10 Tage vor bis 10 Tage nach Blütenende) +, dann Kornschwere +; Delta T +, dann Hülsenzahl +; Delta Nied +, dann Hülsenzahl -; Delta Nied (alle Wachstumszeiten) + und Delta T (bis zum Blütenende) + und Delta Sonn -, dann Strohgewicht +;
    Keywords: Freising, Bayern ; 1921-1926 ; Ertrag ; Witterung ; Gemüse
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 34
    facet.materialart.
    Unknown
    In:  Jahrb. Wis. Bot. 65:98-124.
    Publication Date: 1925
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 35
    facet.materialart.
    Unknown
    In:  Pflanzenbau, Halbmonatsschr. Saatwesen, Anbau und Pflege der Kultur-Pflanzen 2 (7):109-110.
    Publication Date: 1925
    Description: Beobachtungen zu Ertragsausfällen verschiednener Kulturen aufgrund von Trockenheit, Auswertung von Versuchen mit unterschiedlichem Reihenabstand in Hafer, Bedeutung von wasserkonservierender Bodenbearbeitung KATASTER-BESCHREIBUNG: negativer Einfluss von Trockenheit auf den Ertrag KATASTER-DETAIL: Delta Nied (April, Mai, Juni) -, dann Ertrag -;
    Keywords: Sachsen-Anhalt ; 1925 ; Ertrag ; Niederschlag ; Trockenheit
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 36
    Publication Date: 1929
    Description: Auswirkungen des Frostes auf Süsskirschen KATASTER-BESCHREIBUNG: KATASTER-DETAIL:
    Keywords: Mitteldeutschland ; 1928-29 ; Frost ; Obst
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 37
    Publication Date: 1929
    Description: Einfluss der Witterungsfaktoren auf verschiedene Kulturen und die Betriebssysteme KATASTER-BESCHREIBUNG: KATASTER-DETAIL:
    Keywords: Deutschland ; Witterung
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 38
    facet.materialart.
    Unknown
    In:  Bot. Arch. 9: 112-124
    Publication Date: 1925
    Description: Gefäßversuche unterschiedlicher Farbe mit Erden unterschiedlicher Herkünfte und Farben bei variierenden Wassergehalten um den Einfluss auf den Ertrag von Senf zu bestimmen, gute Literaturübersicht zu den bisher dazu durchgeführten Versuchen KATASTER-BESCHREIBUNG: Zusammenhang zwischen dem Ertrag eines Bodens und der Farbe sowie der Wasserkapazität KATASTER-DETAIL: Dunkelheit des Bodens +, dann Temperatur + und somit Ertrag +; Wasserkapazität des Bodens +, dann Temperatur - und Ertrag ++
    Keywords: Königsberg, Preußen ; 1920-1924 ; Boden ; Ertrag ; Globalstrahlung
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 39
    Publication Date: 1929
    Description: Der Autor schildert beobachtete Falter, Puppen, Raupen und Eier aus dem Jahr 1929 und kommt durch ihr häufiges Auftreten zu dem Schluß, daß der extrem kalte Winter keine schädigende Wirkung auf diese hatte. KATASTER-BESCHREIBUNG: KATASTER-DETAIL:
    Keywords: Oberschlesien, Falkenberg ; 1929
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 40
    facet.materialart.
    Unknown
    In:  Arbeiten aus der biologischen Bunbdesanstalt für Land- und Forstwirtschaft 14, Heft 1; Parey, Springer, Berlin; p.1-76
    Publication Date: 1925
    Description: Detaillierte Auflistung des Maikäferauftretens verschiedener Jahre aus dem Zeitraum 1900-1920 aus ganz Deutschland in Bezirks- teilw. sogar Gemeindeauflösung wird gegeben. Der Einfluß der Temperatur in Form von 9°C Mitteltemperatur als Grenze für die Generationenanzahl der beiden Maikäferarten Melolontha melolontha L. und Melolontha hippocastani F. wird diskutiert. Eine Karte über die Generationsdauer der beiden Maikäferarten im deutschen Reich, teilweise auf Bezirksebene, ist enthalten. KATASTER-BESCHREIBUNG: KATASTER-DETAIL:
    Keywords: Deutschland ; 1855-1923 ; Forst ; Pflanzenschädling
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 41
    facet.materialart.
    Unknown
    In:  Deutsche Landwirtschaftliche Presse, 56. Jahrgang, Nr. 37, p. 528-529
    Publication Date: 1929
    Description: Allgemeine Beobachtungen zum Verlauf der Krankheit sowie Beschreibung des Schadbildes KATASTER-BESCHREIBUNG: - KATASTER-DETAIL: -
    Keywords: Kempen, Nordrhein-Westfalen ; 1929 ; Ertrag ; Hafer ; Pflanzenkrankheit
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 42
    Publication Date: 1929
    Description: Einfluß der Witterung auf das Auftreten von Rübenaaskäfer, Zwergzikade, Ackerschnecke, Weizenhalmfliege, Getreideblumenfliege KATASTER-BESCHREIBUNG: KATASTER-DETAIL:
    Keywords: Deutschland, regional aufgelöst ; 1893-1927 ; Getreide ; Pflanzenschädling ; Hackfrüchte
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 43
    facet.materialart.
    Unknown
    In:  Zeitschr. Pflanzenbau 2.
    Publication Date: 1925
    Description: Zusammenhang Witterung und Knollenansatz und -gewicht bei Kartoffeln KATASTER-BESCHREIBUNG: KATASTER-DETAIL:
    Keywords: Kartoffeln ; Ertrag ; Witterung
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 44
    facet.materialart.
    Unknown
    In:  Kühn-Archiv 20:140-222.
    Publication Date: 1929
    Description: Untersuchungen an Ernteergebnissen mittels Rangordnungs- und Korrelationsmethode zur Abhängigkeit von den Witterungsfaktoren. Untersucht wurden die Erträge von Weizen, Roggen, Sommergerste, Hafer, Erbsen und Zuckerrüben KATASTER-BESCHREIBUNG: Einfluss der Witterung (Temperatur, Niederschlag, Sonnenscheindauer) auf die Erträge der Kurlturpflanzen KATASTER-DETAIL: Delta T (Oktober, November) - und Delta T (Januar, Februar) +, dann Erträge (Weizen) +; Delta Nied (April, Mai) + und Delta Nied (Februar, März) -, dann Erträge (Weizen) +; Delta Sonn (März) +, dann Erträge (Weizen) +; Delta Nied (Mai - Zeit des Schossens) +, dann Erträge (Roggen) +; Delta T (November) -, dann Erträge (Roggen) +; Delta Nied (April, Juni) + und Delta T (April, Juni) -, dann Erträge (Sommergerste) +; Nied (April, Juni) 〉 180mm, dann Erträge (Sommergerste) -; Delta Sonn (März, April) + und Delta Sonn (Mai) -, dann Erträge (Sommergerste) +; Delta Nied (April bis Juni) +, dann Erträge (Hafer) +; Delta Sonn (März, April) +, dann Erträge (Hafer) +; Delta T (Juni) -, dann Erträge (Hafer) +; Delta Nied (Juni, September) +, dann Erträge (Zuckerrübe) +; Delta Nied (August) +, Zuckergehalt +; Delta T (Juni) +, dann Erträge (Zuckerrübe) +; Delta Sonn (September) +, Qualität der Ernte +; Delta Sonn (März, April) + und Delta Sonn (Mai, Juni) -, dann Erträge (Getreide) +;
    Keywords: Mansfelder See- und Saalkreis, Kreis Querfurt, Kreis Merseburg ; 1900-1925 ; Zuckerrüben ; Hafer ; Niederschlag ; Roggen ; Temperatur ; Weizen ; Witterung ; Sonnenscheindauer ; Gerste ; Erbsen
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 45
    facet.materialart.
    Unknown
    In:  Sächs. Landw. Zeitschr. 77; p.34-35
    Publication Date: 1929
    Description: Allgemeine Diskussion über die Abhängigkeit verschiedener Schadinsekten von meteorologischen Faktoren.es werden bekannte Informationen zusammengefasst und erklärt. KATASTER-BESCHREIBUNG: KATASTER-DETAIL:
    Keywords: Sachsen ; 1900-1928 ; Pflanzenschädling
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 46
    facet.materialart.
    Unknown
    In:  Der Kartoffelbau, Nr. 69
    Publication Date: 1925
    Description: Zusammenhang der Witterungselemente, insbesondere der Sommerniederschläge zum Ertrag bei Kartoffeln KATASTER-BESCHREIBUNG: KATASTER-DETAIL:
    Keywords: Breslau ; 1901-1921 ; Kartoffeln ; Ertrag ; Witterung
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 47
    facet.materialart.
    Unknown
    In:  Kühn-Archiv:53-78.
    Publication Date: 1925
    Description: Einführung der Rangordnungs- und Korrelationsmethode anhand langjähriger Beobachtungen, Einfluss des Niederschlages und der Temperatur auf den Ertrag von Erbsen, Kartoffeln, Weizen, Hafer und Roggen KATASTER-BESCHREIBUNG: Einfluss der Witterung (Temperatur und Niederschlag) auf den Ertrag KATASTER-DETAIL: Delta T (März und April) + und Delta Nied (März und April) -, dann Erträge (Erbsen) +; Delta T (Mai und Juni) - und Delta Nied (Mai und Juni) +, dann Erträge (Erbse) +; Delta T (Oktober Vorjahr) +, dann Erträge (Kartoffel) +; Delta T (März) + und Delta T (Mai und Juni) -, dann Erträge (Winterweizen) +; Delta Nied (Januar bis März)-, dann Erträge (Hafer) +; Delta Nied (Januar bis März)-, dann Erträge (Winterroggen) +;
    Keywords: Halle ; 1893-25 ; Kartoffeln ; Ertrag ; Fichte ; Hafer ; Korrelationsmethode ; Niederschlag ; Rangordnungsmethode ; Roggen ; Temperatur ; Weizen ; Witterung
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 48
    facet.materialart.
    Unknown
    In:  Diss., Göttingen
    Publication Date: 1925
    Description: Ergebnisse ( Korrelationsmethode) der Bezeihung zwischen Witterung und Ertrag vieler Kulturen eingeteilt nach Monaten KATASTER-BESCHREIBUNG: Beziehungen zwischen Witterung (Temperatur und Niederschlag)und Ernte KATASTER-DETAIL: Delta Nied (erste 10 Blütetage) -, dann Ertrag (Roggen) +; Delta Nied (Beginn der Blüte bis 10 tage nach Ende der Blüte)-, dann Ertrag (Winterweizen) +; Delta Nied (während der 20 Tage nach Beginn der Blüte) -, dann Ertrag (Sommerweizen) +; Delta Tmit (während der 20 Tage nach dem Aufgang) -, dann Ertrag (Hafer) +; Delta Tmin (während der 20 Tage nach dem Aufgang) -, dann Ertrag (Gerste) +; Delta Tmit (während der 20 Tage nach Beginn der Blüte) -, dann Ertrag (Kartoffeln) +; Delta Nied (vom Aufgang bis zum Beginn der Blüte) -, dann Ertrag (Erbsen) +; Delta Nied +, dann Ertrag (Vietsbohnen) +;
    Keywords: Göttingen ; 1901-1922 ; Kartoffeln ; Ertrag ; Hafer ; Korrelationsmethode ; Niederschlag ; Temperatur ; Weizen ; Witterung ; Erbsen
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 49
    facet.materialart.
    Unknown
    In:  Mitt. Deut. Landw. Gesell. 40:950-55.
    Publication Date: 1925
    Description: Zusammenhang zwischen Weizenqualität und den klimatischen Verhältnissen, Schwerpunkt auf die Physiologie des Samens und Qualität (Backfähigkeit) KATASTER-BESCHREIBUNG: KATASTER-DETAIL:
    Keywords: Europa ; letzten100 Jahre ; Ertrag ; Getreide ; Klima ; Niederschlag ; Temperatur ; Weizen
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 50
    facet.materialart.
    Unknown
    In:  Sächs. Landw. Zeitschr. 73, p.614
    Publication Date: 1925
    Description: Beschreibung der Schäden und Erscheinungsformen des Weizenhalmtöters und der Weizenhalmfliege im Jahre 1926 in Sachsen. Nur bedingte Verknüpfung mit klimatischen Parametern. KATASTER-BESCHREIBUNG: KATASTER-DETAIL:
    Keywords: Sachsen ; 1926 ; Getreide ; Pflanzenschädling ; Weizen
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 51
    facet.materialart.
    Unknown
    In:  Intern. Agrik.-Wiss. Rundsch. N.F. 1;p.406-424
    Publication Date: 1925
    Description: Der Autor fasst in einer Literaturstudie Forschungsergebnisse und -erkenntnisse von Studien zum Zusammenhang zwischen klimatischen Parametern und dem Auftreten verschiedener Pflanzenkrankheiten aus Feldversuchen zusammen und vergleicht diese mit eigenen Beobachtungen aus Indien. Aus dem Literaturstudium gewonnene Kardinalwerte für verschiedene Pflanzenkrankheiten sind enthalten. Schwerpunkte der Sammlung an Erkenntnissen stellen Indien und die USA dar. KATASTER-BESCHREIBUNG: KATASTER-DETAIL:
    Keywords: Indien, USA, Welt ; 1900-1925 ; Pflanzenkrankheit ; Witterung
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 52
    Publication Date: 1929
    Description: Lage der Hochs nördlich und südlich des 50. Breitengrades und ihre Bedeutung für die Witterung und Ernteerträge in Mitteldeutschland KATASTER-BESCHREIBUNG: KATASTER-DETAIL: Tmit+ (Janurar, Februar, März, Mai und Dezember) durch Abnahem der barometrischen Nordlagen Tmit- (August, September) durch Zunahme der barometrischen Nordlagen Nied+ (Janurar, Apri,, Mai, August, September, Dezember) durch Abnahmen der barometrischen Nordlagen (entspricht Zunahmen der Südlagen!) Nied- (Februar, März, Oktober und November) durch Abnahmen der barometrischen Nordlagen (entspricht Zunahmen der Südlagen!)
    Keywords: Deutschland ; 1900-1925 ; Luftfeuchte ; Ertrag ; Getreide ; Landwirtschaft ; Niederschlag ; Temperatur ; Trockenheit ; Witterung ; Sonnenscheindauer
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 53
    facet.materialart.
    Unknown
    In:  Georgine, Jahrgang 102, Nr. 68, p. 806-807
    Publication Date: 1925
    Description: Biologie und Bekämpfung von Fritfliege, Getreideblumenfliege, scheckige oder gelbe Halmfliege, Weizenfliege, Hessenfliege KATASTER-BESCHREIBUNG: Einfluss der Witterung (Temperatur, Niederschlag und Wind) auf die Schädlinge KATASTER-DETAIL: Delta T (Winter) +, Anzahl Maden der Halmfliege +; Delta Nied (September) + und Delta Wind (September) +, dann Hessenfliege -
    Keywords: Deutschland ; 1903-1925 ; Insekten ; Anbautermine ; Boden ; Ertrag ; Getreide ; Hafer ; Niederschlag ; Pflanzenschädling ; Temperatur ; Vegetationsperiode ; Weizen ; Wind ; Witterung ; Düngung ; Gerste
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 54
    facet.materialart.
    Unknown
    Bornträger
    In:  Berlin, Bornträger, vol. 12, 189 S., no. Subvol. b, pp. 220, (ISBN 0-12-305355-2)
    Publication Date: 1929
    Keywords: Handbook of geophysics
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 55
    facet.materialart.
    Unknown
    Bornträger
    In:  Professional Paper, Handbuch der Geophysik, Volume 4: Erdbeben (finished), 12+ 1202 S., Berlin, Bornträger, vol. 3, no. VIIa, pp. 264-298, (ISBN: 3-540-23712-7)
    Publication Date: 1929
    Keywords: Seismology ; NOISE
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 56
    facet.materialart.
    Unknown
    Bornträger
    In:  Professional Paper, Handbuch der Geophysik, Volume 4: Erdbeben (finished), 12 + 1202 S., Berlin, Bornträger, vol. 3, no. VIIa, pp. 1-150, (ISBN: 3-540-23712-7)
    Publication Date: 1929
    Keywords: Review article ; Seismology ; Waves ; Wave propagation
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 57
    facet.materialart.
    Unknown
    In:  CASI
    Publication Date: 2018-06-05
    Description: This work covers the literatme published from January 1, 1920, to December 31, 1921, and continues the work of the Smithsonian Institution issued as Volume 55 of the Smithsonian Miscellaneous Collections, which covered the material published prior to June 30, 1909, and the work of Lhe National Advisory Committee for Aeronautics as published in the Bibliography of Aeronautics for the years 1909 to 1916 and 1917 to 1919. As in the Smithsonian volume and in the Bibliography of Aeronautics for the years 1909 to 1916 and 1917 to 1919, citations of the publications of all nations have been included in the languages in which these publications originally appeared. The arrangement is in dictionary form with author and subject entry and one alphabetical arrangement. Detail in the matter of subject reference has been omitted on account of the cost of presentation, but an attempt has been made to give sufficient cross reference for research in special lines. The National Advisory Committee for Aeronautics will next present a bibliography for the year 1922.
    Keywords: Aeronautics (General)
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 58
    facet.materialart.
    Unknown
    In:  CASI
    Publication Date: 2019-06-28
    Description: The purpose of this treatise is, first of all, the determination of the effect of variously loaded spars on one another, since the neglect of this effect would present an economically very unfavorable computation method. The system of spars and cross-bars alone (whether solid or built-up) does not matter at first, the original assumption being that the spars are rigidly braced by the cross-bars.
    Type: NACA-TM-325
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 59
    Publication Date: 2019-06-28
    Description: In this article, the phenomena of the upward component in the case of flat surfaces will be referred to as the "Lilienthal effect." The Lilienthal effect will be distinguished from the Knoller-Betz effect which is explained by means of vertical wind oscillations, at the basis of which, however, there lie air motions which the Lilienthal effect could not produce. It will be shown that the same cause, which can produce the Lilienthal effect on flat airfoils, considerably strengthens the thrust due to the Knoller-Betz effect.
    Type: NACA-TM-324
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 60
    Publication Date: 2019-06-28
    Description: This report presents the results of various experiments carried out at the Gottingen Aerodynamic Institute. These include: experiments with Joukowski wing profiles; experiments on an airplane model with a built-in motor and functioning propeller; and the rotating cylinder (Magnus Effect).
    Type: NACA-TM-323
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 61
    facet.materialart.
    Unknown
    In:  CASI
    Publication Date: 2019-06-28
    Description: The "Bulletin Technique", of March, 1919, gave the results of tests and studies made up to that date in connection with airplane parachutes. This work has been continued.
    Type: NACA-TM-322
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 62
    facet.materialart.
    Unknown
    In:  CASI
    Publication Date: 2019-06-28
    Description: This report presents various methods for increasing the power of engines such as supercharging and turbocharging.
    Type: NACA-TM-321
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 63
    facet.materialart.
    Unknown
    In:  CASI
    Publication Date: 2019-06-28
    Description: Commander Le Prieur, whose flight experience in a low-speed seaplane we related in our number of September 27, 1924, invented, four years ago, an instrument destined to render very great service to aviators, namely, the "navigraph", designed to correct errors of orientation due to the effect of the winds during flight.
    Type: NACA-TM-320
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 64
    Publication Date: 2019-06-28
    Description: The object of this article is to set forth the particular properties of swiftly-moving air, how these affect the installation of a wind tunnel, the experimental results already obtained, the possible applications of such a tunnel, and what can be easily accomplished at the present time.
    Type: NACA-TM-318
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 65
    Publication Date: 2019-06-28
    Description: The following pages present a review of the air transportation activities of England, France, Germany and Holland, based on an inspection trip during the summer of 1924.
    Type: NACA-TM-319
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 66
    facet.materialart.
    Unknown
    In:  CASI
    Publication Date: 2019-06-28
    Description: We are undertaking the task of computing the air forces on a slightly cambered airfoil in the absence of friction and with an infinite aspect ratio. We also assume in advance that the leading edge is very sharp and that its tangent lies in the direction of motion.
    Type: NACA-TM-317
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 67
    facet.materialart.
    Unknown
    In:  CASI
    Publication Date: 2019-06-28
    Description: During the months of June to September, 1924, I personally visited the principal airports of Europe and traveled as a passenger some 6500 air miles on English, French, Romanian, Polish, German and Dutch air lines in order to investigate the development of commercial aviation abroad. The results of the investigation are embodied in a series of reports, of which a summary of the general findings is given below.
    Type: NACA-TM-316
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 68
    Publication Date: 2019-06-28
    Description: Any measuring device, which immediately indicates the rate of fuel consumption in the desired units, has the advantage of saving considerable time and fuel, besides facilitating the adjustment of the carburetor. The Schiske "Konsummeter" (made by the "PS-Vergaser and Apparatebau A. G.") was designed from the above viewpoint.
    Type: NACA-TM-315
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 69
    Publication Date: 2019-06-28
    Description: Attempts by other countries to develop patents for alloys similar to duralumin are presented. Duralumin is aluminum alloyed with 3.5-4.5% copper, 0.5% magnesium, and 0.25-1% of manganese.
    Type: NACA-TM-314
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 70
    Publication Date: 2019-06-28
    Description: This article is based on the experience of the Schute-Lanz Airship Company in light construction. The object is to stimulate the employment of these methods in other fields of industry.
    Type: NACA-TM-313
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 71
    facet.materialart.
    Unknown
    In:  CASI
    Publication Date: 2019-06-28
    Type: NACA-TM-312
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 72
    facet.materialart.
    Unknown
    In:  CASI
    Publication Date: 2019-06-28
    Description: This report begins with a review and analysis of the work being done to develop light airplanes in the U.S. and abroad. A technical discussion of the construction and innovations in light airplanes is then presented.
    Keywords: Aircraft Design, Testing and Performance
    Type: NACA-TM-311
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 73
    facet.materialart.
    Unknown
    In:  CASI
    Publication Date: 2019-06-28
    Description: The phenomenon of the Magnus effect consists in the fact that a revolving body moving relatively to the surrounding fluid (air) is subjected not only to drag (i.e., a force acting in a direction opposite to that of the direction of motion), but also to a lift.
    Type: NACA-TM-310
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 74
    facet.materialart.
    Unknown
    In:  CASI
    Publication Date: 2019-06-28
    Description: It has frequently been stated and written that in order to popularize light aircraft the first essential is the production of a reliable engine capable of being easily maintained and having a long life, at the same time selling at a low figure. It is desired to point out the difficulties in the way of realizing this ideal before remarking on the claims of the various types for adoption.
    Type: NACA-TM-309
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 75
    Publication Date: 2019-06-28
    Description: Into the leading edge of a wing with arbitrary cross-section, there is introduced a cylinder, which can be rotated by an electric motor by means of a cord. Observations were made in the wind tunnel on how the lift at different wind velocities was affected by rotating this cylinder.
    Type: NACA-TM-307
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 76
    facet.materialart.
    Unknown
    In:  CASI
    Publication Date: 2019-06-28
    Description: This report details the procedure followed in establishing a general formula enabling the calculation of the maximum altitude attainable statically.
    Type: NACA-TM-306
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 77
    Publication Date: 2019-06-28
    Description: The proof of the validity of the Reynolds law of similitude for the surface resistance of planes has been developed with an accuracy hitherto unattained and for a large range of lengths and speeds. It has been shown that, in addition to the form resistance, the resistance of the longitudinal edges must be taken into account.
    Type: NACA-TM-308 , International Congress on Applied Mechanics ( 1924 : Delft, Holland)
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 78
    facet.materialart.
    Unknown
    In:  CASI
    Publication Date: 2019-06-28
    Description: Suggestions are presented for the establishment of lecture courses on aviation.
    Type: NACA-TM-304
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 79
    Publication Date: 2019-06-28
    Description: The calculation of wing spars of constant cross-section and load has been thoroughly treated by a large number of authors. Such is not the case,however, regarding the calculation of wing spars whose section and linear load diminish toward the ends, as in wings of trapezoidal contour and decreasing section.
    Type: NACA-TM-305
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 80
    facet.materialart.
    Unknown
    In:  CASI
    Publication Date: 2019-06-28
    Description: The economic costs and benefits of speed on airship traffic are calculated and different factors are considered.
    Type: NACA-TM-302
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 81
    Publication Date: 2019-06-28
    Description: Descriptions of different models of airplanes that took part in the "Tour of France" cross-country race are listed.
    Type: NACA-TM-301
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 82
    Publication Date: 2019-06-28
    Description: On the occasion of the formulation of the rules for testing the efficiency of ventilators and compressors, experiments were instituted by the subcommittee on ventilators for the production of suitable tubes for velocity and pressure measurements.
    Type: NACA-TM-303
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 83
    facet.materialart.
    Unknown
    In:  CASI
    Publication Date: 2019-06-28
    Description: The method of determining the pressure distribution on the fuselage is described, with special attention to how it is affected by the presence of the wings.
    Type: NACA-TM-300
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 84
    Publication Date: 2019-06-28
    Description: Two series of experiments were tried, in order to determine the ignition point at any desired pressure, the first series at constant and the second at varying pressure. The results differ greatly and indicate that testing under pressure, in the investigation of liquid fuels, can be done best in the laboratory and that the determination of the ignition points in an open vessel furnishes no certain indication of the behavior of the fuel in the engine.
    Type: NACA-TM-299
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 85
    facet.materialart.
    Unknown
    In:  CASI
    Publication Date: 2019-06-28
    Description: This report gives the results of a recent series of experiments performed on a wing designed for a cantilever monoplane. Both wings were trapezial in their ground plan, with their tips rounded elliptically. These wing sections combine all known devices for increasing the lift, namely, the slot, the increased camber and angle of attack by means of an aileron running the whole length of the span. The last advance included in the wing section was an increase in wing area by means of an auxiliary wing adjusted by a sort of rectangular joint.
    Type: NACA-TM-298
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 86
    facet.materialart.
    Unknown
    In:  CASI
    Publication Date: 2019-06-28
    Type: NACA-TM-297
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 87
    Publication Date: 2019-06-28
    Description: For several kinds of wire gauze the difference in static, dynamic and total or absolute pressure in front of and behind the gauze were determined for comparison with the pressure drop caused by an airplane radiator, such gauze being used on airplane models to represent the radiator.
    Type: NACA-TM-296
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 88
    facet.materialart.
    Unknown
    In:  CASI
    Publication Date: 2019-06-28
    Description: In reality, the principle of similitude is not applicable to the hulls, the designing of which increases in difficulty with increasing size of the seaplanes. In order to formulate, at least in a general way, the basic principles of calculation, we must first summarize the essential characteristics of a hull with reference to its gradual enlargement. In this study, we will disregard hulls with wing stubs, as being inapplicable to large seaplanes.
    Type: NACA-TM-295
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 89
    facet.materialart.
    Unknown
    In:  CASI
    Publication Date: 2019-06-28
    Description: Part I describes vibration tests, in a wind tunnel, of simple airfoils and of the tail plane of an M0-1 airplane model; it also describes the air flow about this model. From these tests are drawn inferences as to the cause and cure of aerodynamic wing vibrations. Part II derives stability criteria for wing vibrations in pitch and roll, and gives design rules to obviate instability. Part III shows how to design spars to flex equally under a given wing loading and thereby economically minimize the twisting in pitch that permits cumulative flutter. Resonant flutter is not likely to ensue from turbulence of air flow along past wings and tail planes in usual flying conditions. To be flutterproof a wing must be void of reversible autorotation and not have its centroid far aft of its pitching axis, i. e., axis of pitching motion. Danger of flutter is minimized by so proportioning the wing's torsional resisting moment to the air pitching moment at high-speed angles that the torsional flexure is always small. (author)
    Type: NACA-TR-285
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 90
    Publication Date: 2019-06-28
    Description: This report deals with an experimental investigation of the aerodynamical characteristics of airfoils at high speeds. Lift, drag, and center of pressure measurements were made on six airfoils of the type used by the air service in propeller design, at speeds ranging from 550 to 1,000 feet per second. The results show a definite limit to the speed at which airfoils may efficiently be used to produce lift, the lift coefficient decreasing and the drag coefficient increasing as the speed approaches the speed of sound. The change in lift coefficient is large for thick airfoil sections (camber ratio 0.14 to 0.20) and for high angles of attack. The change is not marked for thin sections (camber ratio 0.10) at low angles of attack, for the speed range employed. At high speeds the center of pressure moves back toward the trailing edge of the airfoil as the speed increases. The results indicate that the use of tip speeds approaching the speed of sound for propellers of customary design involves a serious loss in efficiency.
    Type: NACA-TR-207
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 91
    Publication Date: 2019-06-28
    Description: This report deals with the application of the airfoil and twisted wing theory to the calculation of the lift and rolling moment of airplane wings. Most of the results arrived at are strictly true only for wings of elliptic plan form. The investigation aims to give some indications of the accuracy with which the results can be applied to the wing forms in actual use.
    Type: NACA-TR-200
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 92
    facet.materialart.
    Unknown
    In:  CASI
    Publication Date: 2019-06-28
    Description: These experiments were made at the request of the Bureau of Aeronautics, Navy Department, to investigate the velocity of the air in the slipstream in horizontal and climbing flight to determine the form of expression giving the slipstream velocity in terms of the airspeed of the airplane. The method used consisted in flying the airplane both on a level course and in climb at full throttle and measuring the slipstream velocity at seven points in the slipstream for the whole speed range of the airplane in both conditions. In general the results show that for both condition, horizontal and climbing flights, the slipstream velocity v subscript 3 and airspeed v can be represented by straight lines and consequently the equations are of the form: v subscript s = mv+b where m and b are constant. (author)
    Type: NACA-TR-194
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 93
    Publication Date: 2019-06-28
    Description: This report contains those results of the theory of wings and of wing sections which are of immediate practical value. They are proved and demonstrated by the use of the simple conceptions of "kinetic energy" and "momentum" only, familiar to every engineer; and not by introducing "isogonal transformations" and "vortices," which latter mathematical methods are not essential to the theory and better are used only in papers intended for mathematicians and special experts.
    Keywords: Aerodynamics
    Type: NACA-TR-191
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 94
    Publication Date: 2019-06-28
    Description: The general purpose in this study was to determine the stresses in a wooden member subjected to combined beam and column action. What may be considered the specific purpose, as it relates more directly to the problem of design, was to determine the particular stress that obtains at maximum load which, for combined loading, does not occur simultaneously with maximum stress.
    Type: NACA-TR-188
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 95
    Publication Date: 2019-06-28
    Description: In this report, the induced yawing moment, due to the rolling moment produced by the ailerons, is computed. This induced yawing moment is the greatest part of the entire yawing moment encountered by the wings.
    Type: NACA-TR-197
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 96
    Publication Date: 2019-06-28
    Description: The purpose of the investigation covered by this report was the examination of the degree of approach which may be anticipated between laboratory tests on model airplane propellers and results computed by the airfoil theory, based on tests of airfoils representative of successive blade sections. It is known that the corrections of angles of attack and for aspect ratio, speed, and interference rest either on experimental data or on somewhat uncertain theoretical assumptions. The general situation as regards these four sets of corrections is far from satisfactory, and while it is recognized that occasion exists for the consideration of such corrections, their determination in any given case is a matter of considerable uncertainty. There exists at the present time no theory generally accepted and sufficiently comprehensive to indicate the amount of such corrections, and the application to individual cases of the experimental data available is, at best, uncertain. While the results of this first phase of the investigation are less positive than had been hoped might be the case, the establishment of the general degree of approach between the two sets of results which might be anticipated on the basis of this simpler mode of application seems to have been desirable.
    Type: NACA-TR-196
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 97
    facet.materialart.
    Unknown
    In:  CASI
    Publication Date: 2019-06-28
    Description: The tests described in this report were made in the 5-foot atmospheric wind tunnel of the National Advisory Committee for Aeronautics, at Langley Field. The primary objective of collecting data on the characteristics of this tunnel for comparison with those of others throughout the world, in order that, in the future, the results of tests made in all the principle laboratories may be interpreted, compared, and coordinated on a basis of scientifically established relationships, a process hitherto impossible due to the lack of comparable data. The work includes tests of a disk, spheres, cylinders, and airfoils, explorations of the test section for static pressure and velocity distribution, and determination of the variations of air flow direction throughout the operating range of the tunnel. (author)
    Type: NACA-TR-195
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 98
    Publication Date: 2019-06-28
    Description: This report discusses the relation between the temperature of the air at the entrance to the carburetor and the power developed by the engine. Its scope is limited to a consideration of the range of temperatures likely to result from changes of season, locality, or altitude, since its primary aim is the finding of a satisfactory basis for correcting power measurements to a standard temperature. The tests upon which this report is based were made upon aviation engines in the Altitude Laboratory of the Bureau of Standards. From the results of over 1,600 tests it is concluded that if calculations be based on the assumption that the indicated horsepower of an engine varies inversely as the square root of the absolute temperature of the carburetor air the values obtained will check closely experimental measurements. The extent to which this relationship would be expected from theoretical considerations is discussed and some suggestions are given relative to the use of this relationship in correcting horsepower measurements. (author)
    Type: NACA-TR-190
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 99
    Publication Date: 2019-06-28
    Description: For aircraft engines the three principal operating conditions are idling speed, cruising speed, and diving with the engine stopped. In what follows, we will discuss a method which affords a good idea of the course of pressure for the above mentioned operating conditions. The pressures produced in the driving gear are of three kinds; namely, the pressure due to gases, the pressure due to the inertia of the rotating masses, and the pressure due to the inertia of the reciprocating masses.
    Type: NACA-TM-543
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 100
    Publication Date: 2019-06-28
    Description: In order to understand the numerical relations between the air velocity, temperature of the cylinder walls, heat dissipation, cylinder dimensions and type of construction an experimental plant was installed in the Siemens and Halske laboratory. The experimental cylinder was exposed to the air stream of a wind tunnel. The compression chamber was heated by an electrically heated oil bath kept constantly in motion by a stirrer. The wall temperatures were measured by thermocouples. The air stream was produced a seven-watt blower. The air flowed through a current rectifier (honeycomb), diffuser, air chamber with quieting sieves and a nozzle.
    Type: NACA-TM-540
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...