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  • Maps  (91)
  • Other Sources  (27,958)
  • 2005-2009  (6,745)
  • 2000-2004  (20,658)
  • 1955-1959  (647)
  • 2008  (6,745)
  • 2003  (10,649)
  • 2002  (10,010)
  • 1959  (647)
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  • 1
    Call number: K 95.0020 / R6
    In: Geologische Karte der Republik Österreich
    Type of Medium: Map available for loan
    Pages: 1 Kt. : mehrfarb. ; 54 x 82 cm, gefaltet 12 x 21 cm + Erl.-H. (192 S., 2010) im Umschlag
    ISBN: 9783853160558
    Location: Upper compact magazine
    Branch Library: GFZ Library
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  • 2
    Map available for loan
    Map available for loan
    Associated volumes
    Call number: K 11.0087 / Fach 25
    In: Karte der oberflächennahen Rohstoffe der Bundesrepublik Deutschland
    Type of Medium: Map available for loan
    Pages: 1 Kt., gefaltet + Erl.-H. (119 S.)
    Edition: Stand 03/2007
    Location: Upper compact magazine
    Branch Library: GFZ Library
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  • 3
    Call number: K 06.0412 / R6
    Type of Medium: Map available for loan
    Pages: 1 Kt. + Erl.-H. (2009, 162 S.) im Umschlag , mehrfarb. , 79 x 68 cm, gef. 20 x 25 cm
    ISBN: 9783853160473 , 978-3-85316-047-3
    Series Statement: Bundesländerserie. Geologische Karten der österreichischen Bundesländer
    Location: Upper compact magazine
    Branch Library: GFZ Library
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  • 4
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    Augsburg : Bayerisches Landesamt für Umwelt
    Publication Date: 2008
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  • 5
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    Koblenz : Bundesanstalt für Gewässerkunde
    Publication Date: 2008
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  • 6
    Publication Date: 2008
    Description: Das Hochwasser im August 2002 hinterließ in einigen Regionen Deutschlands, besonders in den neuen Bundesländern, hohe Schäden in allen Bereichen des gesellschaftlichen Lebens. Neben den privaten Haushalten waren vor allem die gewerbliche Wirtschaft sowie die öffentliche Infrastruktur betroffen. Aus politischen Kreisen und von wirtschaftlicher Seite wurde befürchtet, dass der Aufbau Ost, das wichtigste Projekt der deutschen Wiedervereinigung, großen Schaden genommen hat, und der wirtschaftliche Umstrukturierungs- und Angleichungsprozess in den ostdeutschen Bundesländern um viele Jahre zurückgeworfen wurde. Kurzfristig wurden zahlreiche Hilfs- und Förderprogramme in Milliardenhöhe zum Schadensausgleich und zum Wiederaufbau der betroffenen Gebiete aufgestellt. Ein Jahr nach der Flutkatastrophe wurde untersucht, ob die Hochwasserprogramme den geschädigten Regionen geholfen und unter Umständen einen wirtschaftlichen Aufschwung über den Ist-Zustand vor der Katastrophe hinaus gebracht haben. Möglicherweise dienten einzelne Programme dazu, zukünftige wirtschaftliche Entwicklungen in eine gezielte Richtung zu lenken oder eventuelle frühere Fehlentscheidungen zu revidieren.
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  • 7
    Publication Date: 2008
    Description: Überschwemmungen werden durch konvektive, lokale Starkregenereignisse oder durch großflächige lang anhaltende Niederschläge ausgelöst. Die natürlichen Eigenschaften des Einzugsgebiets, aber auch die Veränderung der Landnutzung und flussbauliche Maßnahmen beeinflussen das Abflussgeschehen. Insbesondere aufgrund der hohen Siedlungsdichten in flussnahen Gebieten und der damit einhergehenden Ansammlung von Werten entstehen bei Überschwemmungen in Mitteleuropa immer wieder sehr hohe Schäden. Zur Begrenzung zukünftiger Schäden sind Maßnahmen des vorbeugenden Hochwasserschutzes und ein bewusster Umgang mit der Gefahr Überschwemmung erforderlich. | Floods are triggered by intense convective precipitation on a local scale or prolonged precipitation on a regional scale. The natural characteristics of the catchment and the change in land use and river engineering works have an impact on the run-off process. The high settlement density in areas near rivers and the attendant accumulation of values have resulted in floods persistently causing large losses in central Europe. If losses are to be restricted in the future, it is necessary to implement flood control measures and increase awareness in dealing with flood risk.
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  • 8
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    Lüneburg : NLWKN
    In:  Zum Hochwasserschutz für Hitzacker und die Jeetzelniederung, No. 2
    Publication Date: 2008
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  • 9
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    In:  Journal of Flood Risk Management 1(2): 123-129
    Publication Date: 2008
    Description: In August 2002, Germany and particularly Saxony were hit by a severe flood affecting more than two-thirds of Saxony's territory. This disastrous flood event gave rise to reconsideration and redirection of flood protection and related disaster management in Saxony. A comprehensive strategic approach was developed. Primarily, any reconstruction and flood protection measure is based on Flood Protection Concepts, which have been developed for all relevant rivers till 2005. In these concepts, more than 1600 individual flood protection measures are proposed and 548 flood risk maps for all communities at risk are available. With a new methodology specially developed for this task, all measures were prioritised, and a Flood Protection Investment Programme with considerable financial resources was put into operation. Furthermore, the new state flood centre 'Landeshochwasser-zentrum' has been set up and became operational in 2004. It established an advanced full coverage forecast and alert system that has already demonstrated its reliable performance during recent floods.
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  • 10
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    In:  In: Warnsignal Klima: Gesundheitsrisiken - Gefahren für Pflanzen, Tiere & Menschen. J. Lozán, H. Graßl, G. Jendritzky, L. Karbe and K. Reise, University of Hamburg: 282-285
    Publication Date: 2008
    Description: Eichenprozessionsspinner seit Sommer 2003 in anhaltender Vermehrungs- und Ausbreitungsphase; stärkeres Auftreten in Berlin, Ostprignitz-Ruppin, Oberhavel, Landkreis Oder-Spree, Potsdam-Mittelmark sowie in der nördl. Hälfte Sachsen-Anhalts; Blauer Kiefernprachtkäfer seit Ende 1940er Jahre bedeutenster Kiefernstammschädling im NO-dt. Tiefland; Trockenheit verbessert Nahrungsqualität, mindert Abwehrkraft des Wirtsbaumes, höhere Temperaturen stimulieren Eiablage; Zweifleckiger Eichenprachtkäfer als Ursache des Eichensterbens in N-Dtl.; trocken-warme Sommer und milde, feuchte Winter begünstigen Schäden durch Pilz Sphaeropsis sapinea an Kieferntrieben KATASTER-BESCHREIBUNG: KATASTER-DETAIL:
    Keywords: Insekten ; Forst
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  • 11
    Publication Date: 2008
    Description: sehr allgemeine Aussagen darüber, wie sich der Klimawandel auf den Wald auswirken wird (Trockenheit, Wind, Stoffhaushalt, Schaderreger, Leistung); nicht regional spezifiziert KATASTER-BESCHREIBUNG: KATASTER-DETAIL:
    Keywords: Forst ; Klima
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  • 12
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    In:  In: Lozán, J.L.; Graßl, H.; Jendritzky, G.; Karbe, L.; Reise, K. (Hrsg.) Warnsignal Klima: Gesundheitsrisiken. Gefahren für Pflanzen, Tiere und Menschen.Wissenschaftliche Auswertungen, Hamburg, 159-164
    Publication Date: 2008
    Description: klimabedingte Verbreitung von Vektoren im Zusammenhang mit Chagas-Krankheit, Chikungunya-Viruskrankheit, Dengue, Fleckfieber, Läuse-Rückfallfieber, Leismaniose, Lyme-Borreliose, Malaria KATASTER-BESCHREIBUNG: KATASTER-DETAIL:
    Keywords: Umweltmedizin ; Infektionskrankheiten
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  • 13
    Publication Date: 2008
    Description: Studie basierend auf Daten aus der längsten Pollendatenreihe für die Schweiz (Basel 1969-2006), eine der längsten in Europa KATASTER-BESCHREIBUNG: Birkenpollenflug im Untersuchungszeitraum um ca. 15 Tage vorverschoben durch Verschiebung des Beginns der Blüte, Trend zu höheren jährlichen Birkenpollenmengen, Anstieg der höchsten Tagesmittelwerte von Pollenkonzentrationen KATASTER-DETAIL:
    Keywords: Europa ; 1969-2006 ; Umweltmedizin ; Phänologie
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  • 14
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    In:  Kappas, M. (Hrsg): Klimawandel und Hautkrebs, Interdisziplinäre Projektgruppe CLIMAderm, Stuttgart, ibidem-Verlag, 25-51
    Publication Date: 2008
    Keywords: Deutschland ; Umweltmedizin ; UV-Strahlung
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  • 15
    Publication Date: 2008
    Description: Untersuchungen über das Auftreten von Phoma an Raps und die Verbreitung nordwärts in Grossbritanien in der Vergangenheit und Projektionen über den zukünftigen Krankheitsbefall KATASTER-BESCHREIBUNG: Kombination von 2 Modellen (HADCM3 und HADRM3, Wetterdaten mit LARS-WG, 2 CO2-Szenarien), Phoma-Modell um den Befall von Raps im Herbst und Frühjahr mit Phoma für die Zukunft abzuschätzen KATASTER-DETAIL: Delta T (HADCM3, regionales Modell LARS-WG mit high- and low CO2-Konzentrationen laut IPCC, Nakicenovic 2000), dann Phoma-Befall auf Blättern im Herbst etwa 5-10, bzw. 10-15 Tage eher, im Frühhahr sogar bis zu 80 Tagen eher (2020-50 gegenüber 1960-91), Ausbreitung nach Norden
    Keywords: Grossbritanien ; 1960-90, 2021-2050 ; Pflanzenkrankheit ; Raps
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  • 16
    Publication Date: 2008
    Description: Nadelschäden, Überlebensrate, Höhenwachstum 1-jähriger Kiefern im Laborexperiment unter verschiedenen Frösten. Bei genereller Zunahme der mittleren Jahrestemperatur nimmt die Empfindlichkeit gegenüber Frösten zu KATASTER-BESCHREIBUNG: KATASTER-DETAIL:
    Keywords: Kiefer ; Klima ; Temperatur ; Witterungsextreme
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  • 17
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    In:  Archiv für Forstwesen und Landschaftsökologie 42(1): 8-15
    Publication Date: 2008
    Description: siehe Kätzel 2008 KATASTER-BESCHREIBUNG: KATASTER-DETAIL:
    Keywords: Stressindikator ; Forst ; Kiefer ; Trockenheit ; Wassermangel ; Witterungsextreme
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  • 18
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    In:  In: Lozán, J.L.; Graßl, H.; Jendritzky, G.; Karbe, L.; Reise, K. (Hrsg.) Warnsignal Klima: Gesundheitsrisiken. Gefahren für Pflanzen, Tiere und Menschen.Wissenschaftliche Auswertungen, Hamburg, 132-135
    Publication Date: 2008
    Description: Klimaveränderungen und Veränderung von Pollen, Pollensaison, -flug, -konzentration, -arten (zB. Ambrosia) KATASTER-BESCHREIBUNG: Auswirkungen des rezenten Klimawandels: verfrühte und verlängerte Pollensaison, zT. Zunahme der Gesamtpollenzahl (CO2-Konzentrationen / Landnutzungsänderung), Auftreten neuer Pollen (Arealverschiebungen / Invasion), führt zur Zunahme von Häufigkeit und schweregrad allergischer Atemwegserkrankungen KATASTER-DETAIL:
    Keywords: Deutschland, Europa ; Umweltmedizin ; Phänologie
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  • 19
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    In:  Allgemeine Forst Zeitschrift für Wald und Forstwirtschaft (7)
    Publication Date: 2008
    Description: Häufung von Sturmschäden und Zunahme von Schadholz seit Mitte des 20. Jhd. als Folge der Häufung von extremen Wettereignissen, die der globalen Erwärmung zugeordnet wird KATASTER-BESCHREIBUNG: KATASTER-DETAIL:
    Keywords: Forst ; Sturmschaden ; Wind
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  • 20
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    In:  Allgemeine Forst Zeitschrift für Wald und Forstwirtschaft 63(23): 1254-1255
    Publication Date: 2008
    Description: keine Angaben zu WIE Klimaveränderungen auf den Wald wirken, sondern nur WAS diesbezüglich getan werden muss KATASTER-BESCHREIBUNG: KATASTER-DETAIL:
    Keywords: Forst ; Klima
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  • 21
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    In:  Allgemeine Forst Zeitschrift für Wald und Forstwirtschaft 63(15): 800-803
    Publication Date: 2008
    Description: Diskussion der Eignung von Klimahüllen zur Bewertung der Anpassungsfähigkeit von Bäumen unter Bedingungen des Klimwandels KATASTER-BESCHREIBUNG: KATASTER-DETAIL:
    Keywords: Forst ; Klima
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  • 22
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    In:  Gatower Gespräche 2007: Waldbau und Forstökonomie im Zeichen des Klimawandels
    Publication Date: 2008
    Description: hauptsächlich Stress und Schäden durch zukünftigen Klimawandel KATASTER-BESCHREIBUNG: KATASTER-DETAIL:
    Keywords: Stressindikator ; Forst ; Kiefer ; Temperatur ; Trockenheit ; Wassermangel ; Witterungsextreme
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  • 23
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    In:  Archiv für Forstwesen und Landschaftsökologie 42(3)
    Publication Date: 2008
    Description: Bewertung von 47 Waldbaumarten hinsichtlich ihrer Eignung unter Bedingungen des Klimawandels; Bewertung der Toleranz gegenüber Trockenheit und Frost auf 4 Standorten unterschiedlicher Wasserversorgung KATASTER-BESCHREIBUNG: KATASTER-DETAIL:
    Keywords: Buche ; Eiche ; Fichte ; Forst ; Kiefer ; Klima
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  • 24
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    In:  In: Gostomzyk, J.G.; Enke, M. (Hrsg.): Globaler Klimawandel und Gesundheit. Schriftenreihe der Landeszentrale für Gesundheit in Bayern, Band 19, München, 2008, 105-111
    Publication Date: 2008
    Description: Auswirkung der Hitzewelle 2003 auf die Sterblichkeit in Bayern KATASTER-BESCHREIBUNG: Annahme des „harvesting“-Effekts KATASTER-DETAIL:
    Keywords: Bayern ; 2000-2003 ; Umweltmedizin ; Temperatur
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  • 25
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    In:  In: Lozán, J.L.; Graßl, H.; Jendritzky, G.; Karbe, L.; Reise, K. (Hrsg.) Warnsignal Klima: Gesundheitsrisiken. Gefahren für Pflanzen, Tiere und Menschen.Wissenschaftliche Auswertungen, Hamburg, 211-214
    Publication Date: 2008
    Description: Sandmücken als Krankheitserreger und deren Ausbreitung, autochthone Leishmaniose in Deutschland KATASTER-BESCHREIBUNG: bereits infizierte Hunde als bestehendes Erregerreservoir könnte durch klimabedingte Ausbreitung der Sandmücken als Überträger nach Norden zum Risiko werden KATASTER-DETAIL:
    Keywords: Deutschland, Europa ; Umweltmedizin ; Infektionskrankheiten
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  • 26
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    In:  In: Lozán, J.L.; Graßl, H.; Jendritzky, G.; Karbe, L.; Reise, K. (Hrsg.) Warnsignal Klima: Gesundheitsrisiken. Gefahren für Pflanzen, Tiere und Menschen.Wissenschaftliche Auswertungen, Hamburg, 190-197
    Publication Date: 2008
    Description: Auswirkungen des Klimawandels auf Stechmücken-übertragene Arboviren in Mitteleuropa KATASTER-BESCHREIBUNG: (Wieder-)Auftreten vektorübertragener Erkrankungen hauptsächlich durch politische und ökonomische Veränderungen und entsprechende menschliche Aktivitäten, klimatische Veränderungen dabei derzeit nur als ein weiterer möglicher Faktor unter vielen nicht näher bestimmbar KATASTER-DETAIL:
    Keywords: Deutschland, Europa ; Umweltmedizin ; Infektionskrankheiten
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  • 27
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    In:  JDDG - Journal der Deutschen Dermatologischen Gesellschaft, 2008, 6(8), 632-639
    Publication Date: 2008
    Description: Klärung der Studienlage zum potentiellen Einfluss des Klimawandels auf die Prävalenz von Haut- und Allergieerkrankungen in Deutschland KATASTER-BESCHREIBUNG: klimabedingte Veränderungen vor allem bei allergischen Erkrankungen, Hautkrebs und einzelnen erregerbedingten Dermatosen KATASTER-DETAIL:
    Keywords: Deutschland ; Umweltmedizin ; Phänologie ; UV-Strahlung
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  • 28
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    In:  WHO Regional Office for Europe, Copenhagen
    Publication Date: 2008
    Keywords: Europa
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  • 29
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    In:  In: Lozán, J.L.; Graßl, H.; Jendritzky, G.; Karbe, L.; Reise, K. (Hrsg.) Warnsignal Klima: Gesundheitsrisiken. Gefahren für Pflanzen, Tiere und Menschen.Wissenschaftliche Auswertungen, Hamburg, 121-125
    Publication Date: 2008
    Description: Fallbeispiel Sommer 2003 KATASTER-BESCHREIBUNG: Zunahme von Ozon in der Troposphäre bei stationären sommerlichen Hochdruckwetterlagen mit hohen Lufttemperaturen und intensiver Sonneneinstrahlung, indirekt Zunahme von Feinstaub bei Hitze (〉30°C) und Ozonbelastung (〉200 Mikrogramm pro Kubikmeter) KATASTER-DETAIL:
    Keywords: Deutschland ; Umweltmedizin ; Luftverunreinigungen
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  • 30
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    In:  Kappas, M. (Hrsg): Klimawandel und Hautkrebs, Interdisziplinäre Projektgruppe CLIMAderm, Stuttgart, ibidem-Verlag, 1-11
    Publication Date: 2008
    Description: UV-Strahlungsbeeinflussende Faktoren Azimutwinkel, Bewölkung, Aerosole, stratosphärisches Ozon, biologische Wirkung in Abhängigkeit vom Hauttyp und Sensibilisierung (Jahreszeit) KATASTER-BESCHREIBUNG: Einfluss klimatischer Veränderungen auf die Häufigkeit von Hautkrebserkrankungen sehr wahrscheinlich, bei vermutlich hoher Bedeutung des (thermisch motivierten) Expositionsverhaltens KATASTER-DETAIL:
    Keywords: Deutschland ; Umweltmedizin ; UV-Strahlung
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  • 31
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    In:  In: Lozán, J.L.; Graßl, H.; Jendritzky, G.; Karbe, L.; Reise, K. (Hrsg.) Warnsignal Klima: Gesundheitsrisiken. Gefahren für Pflanzen, Tiere und Menschen.Wissenschaftliche Auswertungen, Hamburg, 165-168
    Publication Date: 2008
    Description: von 2700 v.Chr. bis 1970 KATASTER-BESCHREIBUNG: europaweite Abnahme bis zu Erlöschen autochthoner Malaria (Deutschland seit 1954)nicht klimatisch, sondern kulturell bedingt (Trockenlegungen, Abwassersysteme, Lebensweise, Hygiene) KATASTER-DETAIL:
    Keywords: Europa ; Umweltmedizin ; Infektionskrankheiten
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  • 32
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    In:  In: Lozán, J.L.; Graßl, H.; Jendritzky, G.; Karbe, L.; Reise, K. (Hrsg.) Warnsignal Klima: Gesundheitsrisiken. Gefahren für Pflanzen, Tiere und Menschen.Wissenschaftliche Auswertungen, Hamburg, 198-205
    Publication Date: 2008
    Description: Ausbreitung von Erregern und Vektoren durch Zugvögel im Zusammenhang mit reduziertem Zugumfang, Zugwegverkürzungen, Zugzeitenveränderungen, Überwintern im Brutgebiet und die Einrichtung näher am Brutgebiet liegender Winterquartiere durch den Klimawandel KATASTER-BESCHREIBUNG: Ausbreitung von Erregern in bisher natürlicherweise pathogenarme Regionen möglich, Verbreitung humanpathogener Infektionen als seltener Ausnahmefall KATASTER-DETAIL:
    Keywords: Umweltmedizin ; Infektionskrankheiten
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  • 33
    Publication Date: 2008
    Description: Veränderung von Mückenpopulationen als potentielle Krankheitsüberträger in Gebieten, wie dem Oberen Rheintal, unter Klimawandel KATASTER-BESCHREIBUNG: Temperaturerhöhung von 1,6° C würde eine um 2,3 Tage schnellere Entwicklung von An. messeae bedeuten und damit einen schnelleren Zyklus und eine Erhöhung der Anzahl an Generationen KATASTER-DETAIL:
    Keywords: Rheintal ; Umweltmedizin ; Infektionskrankheiten
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  • 34
    Publication Date: 2008
    Description: Ausbreitung von Sandmücken als Überträger der besonders für Kleinkinder und Immunsupprimierte gefährlichen viszeralen Leishmaniose KATASTER-BESCHREIBUNG: Temperaturerhöhung um 1°C im Vergleich zum Zeitraum 1971–2000 könnte in vielen Gebieten zu Bedingungen führen, die für ein Vorkommen von Sandmücken geeignet sind KATASTER-DETAIL: Erhöhung der Winter-(Januar-Durchschnitts-)Temperaturen könnte im Westen Österreichs zur Etablierung von Ph. mascittii führen, Erhöhung der Sommertemperatur würde besonders im Osten und Südosten zu für Ph. neglectus geeigneten Bedingungen führen
    Keywords: Europa, Österreich ; Umweltmedizin ; Infektionskrankheiten
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  • 35
    Publication Date: 2008
    Description: zeitliche Trends und geografische Ursprünge der Vektor-übertragenen Krankheiten in Deutschland im Hinblick auf Stärken der bestehenden Krankheitsüberwachung für Hantavirus Infektion (endemisch in Deutschland), Chikungunya-Fieber (vor kurzem Schwellenländer in Europa) und Dengue-Fieber (importiert aus tropischen Regionen) KATASTER-BESCHREIBUNG: KATASTER-DETAIL:
    Keywords: Deutschland ; 2001-2007 ; Umweltmedizin ; Infektionskrankheiten
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  • 36
    Publication Date: 2008
    Description: Studie zu einer prognostizierten Anzahl von Tagen mit Wärme- und mit Kältestress, basierend auf Klimaszenarien für den Zeitraum 2071 bis 2100 KATASTER-BESCHREIBUNG: schätzungsweise durchschnittlicher Anstieg der Zahl der wärmeinduzierten Krankheitsfälle um einen Faktor von mehr als 3 und für hitzebedingte Krankenhausaufenthalte 6, Verlust von 0,1% bis 0.5% des BIP durch krankheitbedingten Arbeitsausfall KATASTER-DETAIL:
    Keywords: Deutschland ; Umweltmedizin
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  • 37
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    In:  In: Lozán, J.L.; Graßl, H.; Jendritzky, G.; Karbe, L.; Reise, K. (Hrsg.) Warnsignal Klima: Gesundheitsrisiken. Gefahren für Pflanzen, Tiere und Menschen.Wissenschaftliche Auswertungen, Hamburg, 206-210
    Publication Date: 2008
    Description: Einfluss der Temperatur, Entstehung von Massenpopulationen, Simuliiden als Vektoren, Vorkommen und Übertragungszyklus der Onchozerkose (Flussblindheit) KATASTER-BESCHREIBUNG: Ausbreitung ausschließlich durch Klimaveränderungen unwahrscheinlich, Entstehung von Massenpoulationen eher begünstigt zB. durch Renaturierungsmaßnahmen von Flusssystemen in Flachlandgebieten, Ausbreitung der Onchozerkose unwahrscheinlich, leicht behandelbar KATASTER-DETAIL:
    Keywords: Europa ; Umweltmedizin ; Infektionskrankheiten
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  • 38
    Publication Date: 2008
    Description: siehe Möller 2007 KATASTER-BESCHREIBUNG: KATASTER-DETAIL:
    Keywords: Insekten ; Forst ; Kiefer
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  • 39
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    In:  In: Lozán, J.L.; Graßl, H.; Jendritzky, G.; Karbe, L.; Reise, K. (Hrsg.) Warnsignal Klima: Gesundheitsrisiken. Gefahren für Pflanzen, Tiere und Menschen.Wissenschaftliche Auswertungen, Hamburg, 169-172
    Publication Date: 2008
    Description: Malaria in Europa früher und heute, Verbreitung von Malariavektoren in Europa, Klimaabhängige Entwicklung und Verbreitung der Vektoren und Malariaerreger KATASTER-BESCHREIBUNG: Zunahme sporadisch auftretender Einzelfälle der Malaria durch klimabedingte Temperaturerhöhung nicht auszuschließen, Epidemien oder Reetablierung der Malaria bei gegebenem Standard der Gesundheitsfürsorge höchst unwahrscheinlich KATASTER-DETAIL:
    Keywords: Europa ; Umweltmedizin ; Infektionskrankheiten
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  • 40
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    In:  In: Lozán, J.L.; Graßl, H.; Jendritzky, G.; Karbe, L.; Reise, K. (Hrsg.) Warnsignal Klima: Gesundheitsrisiken. Gefahren für Pflanzen, Tiere und Menschen.Wissenschaftliche Auswertungen, Hamburg, 173-177
    Publication Date: 2008
    Description: Einfluss von Wetterparametern auf die Beziehungen Virus-Vektor und Virus-Vertebraten, Einfluss von Wetterextremen auf Arbovirenzirkulation KATASTER-BESCHREIBUNG: Vorhersagen zur Einwanderung neuer potentieller Vektoren ausgeschlossen, Zunahme der Viruslast in Arthropoden-Vektoren mit der Folge von häufigeren und/oder schwereren Erkrankungen möglich KATASTER-DETAIL:
    Keywords: Umweltmedizin ; Infektionskrankheiten
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  • 41
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    In:  In: Lozán, J.L.; Graßl, H.; Jendritzky, G.; Karbe, L.; Reise, K. (Hrsg.) Warnsignal Klima: Gesundheitsrisiken. Gefahren für Pflanzen, Tiere und Menschen.Wissenschaftliche Auswertungen, Hamburg, 224-228
    Publication Date: 2008
    Description: Klimaveränderungen und die Zunahme der FSME-Indizes KATASTER-BESCHREIBUNG: Klimaveränderungen erlauben Wirtssuche von Ixodes ricinus im Winter, Beschleunigung des Lebenszyklus von Ixodes spec., Ausbreitung in höhere Gebirgslagen und nach Norden KATASTER-DETAIL:
    Keywords: Europa, Deutschland ; Umweltmedizin ; Infektionskrankheiten
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  • 42
    facet.materialart.
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    In:  In: Lozán, J.L.; Graßl, H.; Jendritzky, G.; Karbe, L.; Reise, K. (Hrsg.) Warnsignal Klima: Gesundheitsrisiken. Gefahren für Pflanzen, Tiere und Menschen.Wissenschaftliche Auswertungen, Hamburg, 115-120
    Publication Date: 2008
    Description: Bedeutung von Kohlendioxis und Spurengasen und von Aerosolen und Wolken, Global Dimming und Global Brightening KATASTER-BESCHREIBUNG: KATASTER-DETAIL:
    Keywords: Umweltmedizin ; UV-Strahlung
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  • 43
    facet.materialart.
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    In:  In: Lozán, J.L.; Graßl, H.; Jendritzky, G.; Karbe, L.; Reise, K. (Hrsg.) Warnsignal Klima: Gesundheitsrisiken. Gefahren für Pflanzen, Tiere und Menschen.Wissenschaftliche Auswertungen, Hamburg, 108-114
    Publication Date: 2008
    Keywords: Umweltmedizin ; Temperatur ; Luftverunreinigungen
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  • 44
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    In:  Masterarbeit in der Klimatologie des Geographischen Instituts an der Mathematisch-Naturwissenschaftlichen Fakultät II der Humboldt-Universität zu Berlin
    Publication Date: 2008
    Description: Vergleich der Sommerperioden 2003 und 2006 im Untersuchungszeitraum für Patientenaufnahmen bei über 45-Jähringen mit Atmungssystemerkrankungen KATASTER-BESCHREIBUNG: für Sommer 2006 positive signifikante Zusammenhänge zwischen Patientenaufnahmen mit Herz-Kreislauf- und Atmungssystemerkrankungen und ansteigender Luftfeuchte sowie Sonnenscheindauer bei Lufttemperaturen ab 25°C KATASTER-DETAIL: Delta T+, Delta Relf +, Delta Sonn+: Tmit 〉 25°C (2003 und 2006), dann signifikante Zunahme von Herzkreislauf-Erkrankungen und Atemwegssystemerkrankungen
    Keywords: Berlin ; 2002-2006 ; Umweltmedizin ; Temperatur
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  • 45
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    In:  In: Gostomzyk, J.G.; Enke, M. (Hrsg.): Globaler Klimawandel und Gesundheit. Schriftenreihe der Landeszentrale für Gesundheit in Bayern, Band 19, München, 2008, 75 – 85
    Publication Date: 2008
    Description: Pollensaison, -auftreten und -arten, sowie Veränderungen der Allergenität von Pollen unter Klimawandel KATASTER-BESCHREIBUNG: zunehmende Polysensibilisierungen gegenüber Inhalationsallergien durch zunehmend invasives Traubenkraut Ambrosia artemisiifolia KATASTER-DETAIL:
    Keywords: Deutschland ; Umweltmedizin ; Phänologie
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  • 46
    Publication Date: 2008
    Description: Studie zur klimabedingten Ausbreitung des Eichenprozessionsspinners in den Niederlanden KATASTER-BESCHREIBUNG: bei einer durchschnittlichen Temperatur im Sommer im Norden der Niederlande zwischen 16,6 und 17,6 ° C im Jahr 2020 und zwischen 17,0 und 19,0 im Jahr 2050 (je nach nach Szenario) könnte 2020 bereits das gesamte Land Verbreitungsgebiet des Eichenprozessionsspinners sein KATASTER-DETAIL:
    Keywords: Niederlande ; 1991-2007 ; Umweltmedizin ; Luftverunreinigungen
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  • 47
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    In:  Other Sources
    Publication Date: 2011-08-26
    Description: If you are a NASA-sponsored scientist or engineer. computing time is available to you at the High-End Computing (HEC) Program's NASA Advanced Supercomputing (NAS) Facility and NASA Center for Computational Sciences (NCCS). The Science Mission Directorate will select from requests NCCS Portals submitted to the e-Books online system for awards beginning on May 1. Current projects set to explore on April 30 must have a request in e-Books to be considered for renewal
    Keywords: Computer Systems
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  • 48
    Publication Date: 2011-08-26
    Description: Developments in small supersonic aircraft design are predicted to result in low-intensity sonic booms. Booms generated by current aircraft are similar to those that led to the ban on commercial supersonic fli ght over the US, so are unsuitable for parametric studies of psychoac oustic response to low-intensity booms. Therefore, simulators have be en used to study the impact of predicted low-intensity sonic booms. H owever, simulators have been criticized because, when simulating conv entional-level booms, the sounds were observed to be unrealistic by p eople experienced in listening to sonic booms. Thus, two studies were conducted to measure the perceived realism of three sonic boom simul ators. Experienced listeners rated the realism of conventional sonic boom signatures when played in these simulators. The effects on percei ved realism of factors such as duration of post-boom noise, exclusion of very low frequency components, inclusion of ground reflections, a nd type of simulator were examined. Duration of post-boom noise was f ound to have a strong effect on perceived realism, while type of simu lator had a weak effect. It was determined that post-boom noise had t o be at least 1.5 seconds long for the sound to be rated very realist ic. Loudness level did not affect realism for the range of sounds pla yed in the tests (80-93 dB ASEL).
    Keywords: Acoustics
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  • 49
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    In:  Other Sources
    Publication Date: 2018-06-11
    Description: The Cassini/Huygens Mission is a nineteen-year multinational project to design, construct and execute an investigation of the Saturn system, with emphasis on its largest moon, Titan. Titan's atmosphere is nearly opaque at optical wavelengths, so a Ku-band radar imaging system was required to map its surface. In this paper we describe the radar instrument, discuss some of the challenges to its design, and review its operating modes. We briefly summarize the surprises that the radar instrument has revealed while investigating Titan.
    Keywords: Communications and Radar
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  • 50
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    Publication Date: 2018-06-11
    Description: This objectives of this slide presentation are to: (1) Share JPL experiences by describing the evolution of fault protection during its history in deep space exploration, (2) Examine issues of fault protection scope and implementation that affect missions today, and (3) Discuss solutions for the problems of today and tomorrow.
    Keywords: Computer Programming and Software
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  • 51
    Publication Date: 2018-06-11
    Description: Area array packages (AAPs) with 1.27 mm pitch have been the packages of choice for commercial applications; they are now starting to be implemented for use in military and aerospace applications. Thermal cycling characteristics of plastic ball grid array (PBGA) and chip scale package assemblies, because of their wide usage for commercial applications, have been extensively reported on in literature. Thermal cycling represents the on-off environmental condition for most electronic products and therefore is a key factor that defines reliability.However, very limited data is available for thermal cycling behavior of ceramic packages commonly used for the aerospace applications. For high reliability applications, numerous AAPs are available with an identical design pattern both in ceramic and plastic packages. This paper compares assembly reliability of ceramic and plastic packages with the identical inputs/outputs(I/Os) and pattern. The ceramic package was in the form of ceramic column grid array (CCGA) with 560 I/Os peripheral array with the identical pad design as its plastic counterpart.
    Keywords: Electronics and Electrical Engineering
    Type: Transactions On Components And Packaging Technologies (ISSN 1521-3331); Volume 31; No. 2; 285-296
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  • 52
    Publication Date: 2018-06-11
    Description: Cassini-Huygens is a multidisciplinary, international planetary mission consisting of an orbiting spacecraft and a probe. The Huygens probe successfully landed on Titan's surface on January 14, 2005, while the orbiter has performed observations of Saturn, its rings, satellites, and magnetosphere since it entered orbit around Saturn on July 1, 2004. The Cassini mission has been prolific in its scientific discoveries about the Saturn system. In this special section, we present new mission results with a focus on the 'icy satellites,' which we define as all Saturn's moons with the exception of Titan. The results included in this section have come out of the Cassini SOST--Satellites Orbiter Science Team--a multi-instrument and multidiscipline group that works together to better understand the icy satellites and their interactions with Saturn and its rings. Other papers included in this issue present ground-based observations and interior modeling of these icy moons.
    Keywords: Space Sciences (General)
    Type: Icarus (ISSN 0019-1035); Volume 193; No. 2; 305-308
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  • 53
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    In:  CASI
    Publication Date: 2018-06-11
    Description: The Bird Vision system is a multicamera photogrammerty software application that runs on a Microsoft Windows XP platform and was developed at Kennedy Space Center by ASRC Aerospace. This software system collects data about the locations of birds within a volume centered on the Space Shuttle and transmits it in real time to the laptop computer of a test director in the Launch Control Center (LCC) Firing Room.
    Keywords: Space Transportation and Safety
    Type: John F. Kennedy Space Center's Technology Development and Application 2006-2007 Report; 60-61; NASA/TM-2008-214740
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  • 54
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    In:  CASI
    Publication Date: 2018-06-11
    Description: After the loss of Columbia, there was great concern in the Space Shuttle program for the impact of debris against the leading edges of the Orbiter wings. It was quickly recognized that, in addition to impacts by foam, ice that formed on the liquid-oxygen bellows running down the outside of the External Tank could break free during launch and hit this sensitive area. A Center Director s Discretionary Fund (CDDF) project would concentrate on novel ideas that were potentially applicable. The most successful of the new concepts for ice mitigation involved shape memory alloy materials. These materials can be bent into a given shape and, when heated, will return to their original shape.
    Keywords: Space Transportation and Safety
    Type: John F. Kennedy Space Center's Technology Development and Application 2006-2007 Report; 20-21; NASA/TM-2008-214740
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  • 55
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    In:  CASI
    Publication Date: 2018-06-11
    Description: The device and associated analysis methodology summarized in this report were developed for the purpose of estimating the size of discontinuities in the surface of the foam that covers the Space Shuttle External Tank. These surface offsets are thought to be due to subsurface cracks in the foam insulation. The mathematical analysis and procedure described here provide a method to quantity the dimensions of the crack offset in a direction perpendicular to the surface, making use of the projected laser target device (PLTD) tool and a laser line projector. The keys to the construction and use of the PLTD are the following geometrical design requirements: Laser dots are on a square grid: length on a side. Laser beams are perpendicular to projected surface. Beams are parallel out to the distance being projected. The PLTD can be used to (1) calibrate fixed cameras of unknown magnification and orientation (far-field solution); (2) provide equivalent calibration to multiple cameras, previously achieved only by the use of known target points, for example, in 3.D foreign-object debris tracking on a fixed launch platform; (3) compute scaling for conventional 2.D images, and depth of field for 3.D images (near-field solution); and (4) in conjunction with a laser line projector, achieve accurate measurements of surface discontinuity (cracks) in a direction perpendicular to the surface.
    Keywords: Space Sciences (General)
    Type: John F. Kennedy Space Center's Technology Development and Application 2006-2007 Report; 22-23; NASA/TM-2008-214740
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  • 56
    Publication Date: 2018-06-11
    Description: Excavating granular materials beneath a vertical jet of gas involves several physical mechanisms. These occur, for example, beneath the exhaust plume of a rocket landing on the soil of the Moon or Mars. We performed a series of experiments and simulations (Figure 1) to provide a detailed view of the complex gas-soil interactions. Measurements taken from the Apollo lunar landing videos (Figure 2) and from photographs of the resulting terrain helped demonstrate how the interactions extrapolate into the lunar environment. It is important to understand these processes at a fundamental level to support the ongoing design of higher fidelity numerical simulations and larger-scale experiments. These are needed to enable future lunar exploration wherein multiple hardware assets will be placed on the Moon within short distances of one another. The high-velocity spray of soil from the landing spacecraft must be accurately predicted and controlled or it could erode the surfaces of nearby hardware. This analysis indicated that the lunar dust is ejected at an angle of less than 3 degrees above the surface, the results of which can be mitigated by a modest berm of lunar soil. These results assume that future lunar landers will use a single engine. The analysis would need to be adjusted for a multiengine lander. Figure 3 is a detailed schematic of the Lunar Module camera calibration math model. In this chart, formulas relating the known quantities, such as sun angle and Lunar Module dimensions, to the unknown quantities are depicted. The camera angle PSI is determined by measurement of the imaged aspect ratio of a crater, where the crater is assumed to be circular. The final solution is the determination of the camera calibration factor, alpha. Figure 4 is a detailed schematic of the dust angle math model, which again relates known to unknown parameters. The known parameters now include the camera calibration factor and Lunar Module dimensions. The final computation is the ejected dust angle, as a function of Lunar Module altitude.
    Keywords: Space Sciences (General)
    Type: John F. Kennedy Space Center's Technology Development and Application 2006-2007 Report; 44-45; NASA/TM-2008-214740
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  • 57
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    In:  CASI
    Publication Date: 2018-06-11
    Description: NASA s advanced visual simulations are essential for analyses associated with life cycle planning, design, training, testing, operations, and evaluation. Kennedy Space Center, in particular, uses simulations for ground services and space exploration planning in an effort to reduce risk and costs while improving safety and performance. However, it has been difficult to circulate and share the results of simulation tools among the field centers, and distance and travel expenses have made timely collaboration even harder. In response, NASA joined with Valador Inc. to develop the Distributed Observer Network (DON), a collaborative environment that leverages game technology to bring 3-D simulations to conventional desktop and laptop computers. DON enables teams of engineers working on design and operations to view and collaborate on 3-D representations of data generated by authoritative tools. DON takes models and telemetry from these sources and, using commercial game engine technology, displays the simulation results in a 3-D visual environment. Multiple widely dispersed users, working individually or in groups, can view and analyze simulation results on desktop and laptop computers in real time.
    Keywords: Computer Systems
    Type: John F. Kennedy Space Center's Technology Development and Application 2006-2007 Report; 96-97; NASA/TM-2008-214740
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  • 58
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    In:  CASI
    Publication Date: 2018-06-11
    Description: Future human lunar habitation requires using in situ materials for both structural components and oxygen production. Lunar bases must be constructed from thermal-and radiation-shielding materials that will provide significant protection from the harmful cosmic energy which normally bombards the lunar surface. In addition, shipping oxygen from Earth is weight-prohibitive, and therefore investigating the production of breathable oxygen from oxidized mineral components is a major ongoing NASA research initiative. Lunar regolith may meet the needs for both structural protection and oxygen production. Already a number of oxygen production technologies are being tested, and full-scale bricks made of lunar simulant have been sintered. The beneficiation, or separation, of lunar minerals into a refined industrial feedstock could make production processes more efficient, requiring less energy to operate and maintain and producing higher-performance end products. The method of electrostatic beneficiation used in this research charges mineral powders (lunar simulant) by contact with materials of a different composition. The simulant acquires either a positive or negative charge depending upon its composition relative to the charging material.
    Keywords: Space Sciences (General)
    Type: John F. Kennedy Space Center's Technology Development and Application 2006-2007 Report; 38-39; NASA/TM-2008-214740
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  • 59
    Publication Date: 2018-06-11
    Description: To sustain affordable human and robotic space exploration, the ability to live off the land at the exploration site will be essential. NASA calls this ability in situ resource utilization (ISRU) and is focusing on finding ways to sustain missions first on the Moon and then on Mars. The ISRU project aims to develop capabilities to technology readiness level 6 for the Robotic Lunar Exploration Program and early human missions returning to the Moon. NASA is concentrating on three primary areas of ISRU: (1) excavating, handling, and moving lunar regolith, (2) extracting oxygen from lunar regolith, and (3) finding, characterizing, extracting, separating, and storing volatile lunar resources, especially in the permanently shadowed polar craters. To meet the challenges related to technology development for these three primary focus areas, the Regolith and Environment Science and Oxygen and Lunar Volatile Extraction (RESOLVE) project was initiated in February 2005, through funding by the Exploration Systems Mission Directorate. RESOLVE's objectives are to develop requirements and conceptual designs and to perform breadboard concept verification testing of each experiment module. The final goal is to deliver a flight prototype unit that has been tested in a relevant lunar polar environment. Here we report progress toward the third primary area creating ways to find, characterize, extract, separate, and store volatile lunar resources. The tasks include studying thermal, chemical, and electrical ways to collect such volatile resources as hydrogen, water, nitrogen, methane, and ammonia. We approached this effort through two subtasks: lunar water resource demonstration (LWRD) and regolith volatile characterization (RVC).
    Keywords: Man/System Technology and Life Support
    Type: John F. Kennedy Space Center's Technology Development and Application 2006-2007 Report; 36-37; NASA/TM-2008-214740
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  • 60
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    In:  CASI
    Publication Date: 2018-06-11
    Description: A special system was fabricated to properly calibrate the wireless inclinometer, a new device that will measure the Orbiter s hang angle. The wireless inclinometer has a unique design and method of attachment to the Orbiter that will improve the accuracy of the measurements, as well as the safety and ease of the operation. The system properly calibrates the four attached inclinometers, in both the horizontal and vertical axes, without needing to remove any of the component parts. The Wireless Inclinometer Calibration System combines (1) a calibration fixture that emulates the point of attachment to the Orbiter in both the horizontal and vertical axes and the measurement surfaces, (2) an application-specific software program that accepts calibration data such as dates, zero functions, or offsets and tables, and (3) a wireless interface module that enables the wireless inclinometer to communicate with a calibration PC.
    Keywords: Space Sciences (General)
    Type: John F. Kennedy Space Center's Technology Development and Application 2006-2007 Report; 114-115; NASA/TM-2008-214740
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  • 61
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    In:  CASI
    Publication Date: 2018-06-11
    Description: The NASA Cryogenics Test Laboratory at Kennedy Space Center conducted long-term testing of SOFI materials under actual-use cryogenic conditions. The lab tested NCFI 24-124 (acreage foam), BX-265 (close-out foam, including intertank flange and bipod areas), and a potential alternate material, NCFI 27-68 (acreage foam with the flame retardant removed). Specimens of all three materials were placed at a site that simulated aging (the Vehicle Assembly Building [VAB]) and a site that simulated weathering (Atmospheric Exposure Test Site [beach site]). After aging/ weathering intervals of 3, 6, and 12 months, the samples were retrieved and tested for their ability to absorb moisture under conditions similar to those experienced by the Space Shuttle External Tank (ET) during the loading of cryogenic propellants.
    Keywords: Nonmetallic Materials
    Type: John F. Kennedy Space Center's Technology Development and Application 2006-2007 Report; 78-79; NASA/TM-2008-214740
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  • 62
    Publication Date: 2018-06-11
    Description: The exhaust plumes of launch vehicles impose severe heating rates, pressures, and vibroacoustic loads on ground support equipment (GSE) on the Mobile Launcher (ML), as well as on the vehicle itself. The vibroacoustic environment must be predicted before the criteria for the acceptance and qualification testing of GSE components and their installations can be determined. This project updates launch noise modeling.
    Keywords: Acoustics
    Type: John F. Kennedy Space Center's Technology Development and Application 2006-2007 Report; 46-47; NASA/TM-2008-214740
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  • 63
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    In:  CASI
    Publication Date: 2018-06-11
    Description: The goal of this work was to predict the trajectories of blowing lunar regolith (soil) particles when a spacecraft lands on or launches from the Moon. The blown regolith is known to travel at very high velocity and to damage any hardware located nearby on the Moon. It is important to understand the trajectories so we can develop technologies to mitigate the blast effects for the launch and landing zones at a lunar outpost. A mathematical model was implemented in software to predict the trajectory of a single spherical mass acted on by the gas jet from the nozzle of a lunar lander.
    Keywords: Lunar and Planetary Science and Exploration
    Type: John F. Kennedy Space Center's Technology Development and Application 2006-2007 Report; 42-43; NASA/TM-2008-214740
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  • 64
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    In:  CASI
    Publication Date: 2018-06-11
    Description: LLEGO is a model for understanding recurring launch and landing operations costs at Kennedy Space Center for human space flight. Launch and landing operations are often referred to as ground processing, or ground operations. Currently, this function is specific to the ground operations for the Space Shuttle Space Transportation System within the Space Shuttle Program. The Constellation system to follow the Space Shuttle consists of the crewed Orion spacecraft atop an Ares I launch vehicle and the uncrewed Ares V cargo launch vehicle. The Constellation flight and ground systems build upon many elements of the existing Shuttle flight and ground hardware, as well as upon existing organizations and processes. In turn, the LLEGO model builds upon past ground operations research, modeling, data, and experience in estimating for future programs. Rather than to simply provide estimates, the LLEGO model s main purpose is to improve expenses by relating complex relationships among functions (ground operations contractor, subcontractors, civil service technical, center management, operations, etc.) to tangible drivers. Drivers include flight system complexity and reliability, as well as operations and supply chain management processes and technology. Together these factors define the operability and potential improvements for any future system, from the most direct to the least direct expenses.
    Keywords: Space Sciences (General)
    Type: John F. Kennedy Space Center's Technology Development and Application 2006-2007 Report; 106; NASA/TM-2008-214740
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  • 65
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    In:  CASI
    Publication Date: 2018-06-11
    Description: A next-generation telemetry workstation has been developed to replace the one currently used to test and control Range Safety systems. Improving upon the performance of the original system, the new telemetry workstation uses dual-channel telemetry boards for better synchronization of the two uplink telemetry streams. The new workstation also includes an Interrange Instrumentation Group/Global Positioning System (IRIG/GPS) time code receiver board for independent, local time stamping of return-link data. The next-generation system will also record and play back return-link data for postlaunch analysis.
    Keywords: Computer Systems
    Type: John F. Kennedy Space Center's Technology Development and Application 2006-2007 Report; 64-65; NASA/TM-2008-214740
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  • 66
    Publication Date: 2018-06-11
    Description: The Kennedy Space Center (KSC) Electrostatics and Surface Physics Laboratory is participating in an Innovative Partnership Program (IPP) project with an industry partner to modify a commercial off-the-shelf simulation software product to treat the electrodynamics of particulate systems. Discrete element modeling (DEM) is a numerical technique that can track the dynamics of particle systems. This technique, which was introduced in 1979 for analysis of rock mechanics, was recently refined to include the contact force interaction of particles with arbitrary surfaces and moving machinery. In our work, we endeavor to incorporate electrostatic forces into the DEM calculations to enhance the fidelity of the software and its applicability to (1) particle processes, such as electrophotography, that are greatly affected by electrostatic forces, (2) grain and dust transport, and (3) the study of lunar and Martian regoliths.
    Keywords: Computer Programming and Software
    Type: John F. Kennedy Space Center's Technology Development and Application 2006-2007 Report; 4-5; NASA/TM-2008-214740
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  • 67
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    In:  CASI
    Publication Date: 2018-06-11
    Description: A SALT effort was initiated in late 2005 with seed funding from the Office of Safety and Mission Assurance Human Factors organization. Its objectives included demonstrating human behavior and performance modeling and simulation technologies for launch team analysis, training, and evaluation. The goal of the research is to improve future NASA operations and training. The project employed an iterative approach, with the first iteration focusing on the last 70 minutes of a nominal-case Space Shuttle countdown, the second iteration focusing on aborts and launch commit criteria violations, the third iteration focusing on Ares I-X communications, and the fourth iteration focusing on Ares I-X Firing Room configurations. SALT applied new commercial off-the-shelf technologies from industry and the Department of Defense in the spaceport domain.
    Keywords: Space Sciences (General)
    Type: John F. Kennedy Space Center's Technology Development and Application 2006-2007 Report; 100-101; NASA/TM-2008-214740
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  • 68
    Publication Date: 2018-06-11
    Description: Two viable polyimide backbone materials have been identified that will allow the repair of polyimide electrical wire insulation found on the Space Shuttle and other aging aircraft. This identification is the outcome of ongoing efforts to assess the viability of using such polyimides and polyimide precursors (polyamic acids [PAAs]) as repair materials for aging polyimide electrical wire insulation. These repair materials were selected because they match the chemical makeup of the underlying wire insulation as closely as possible. This similarity allows for maximum compatibility, coupled with the outstanding physical properties of polyimides. The two polyimide backbone materials allow the polymer to be extremely flexible and to melt at low temperatures. A polymer chain end capping group that allows the polymer to crosslink into a nonflowable repair upon curing at around 200 C was also identified.
    Keywords: Nonmetallic Materials
    Type: John F. Kennedy Space Center's Technology Development and Application 2006-2007 Report; 16-17; NASA/TM-2008-214740
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  • 69
    Publication Date: 2018-06-11
    Description: It has been observed that power MOSFETs can experience an SEGR and continue to function with altered parameters. We propose that there are three different types of SEGR modes; the micro-break, the thermal runaway, and the avalanche breakdown. Data that demonstrates these stages of device failure are presented as well as a proposed model for the micro-break. Brief discussions of the other modes, based on analysis combined with our interpretations of the older literature, are also given.
    Keywords: Electronics and Electrical Engineering
    Type: IEEE Transactions On Nuclear Science; Volume 55; No. 4; 2366-2375
    Format: text
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  • 70
    Publication Date: 2018-06-11
    Description: High density PWB (printed wiring board) with microvia technology is required for implementation of high density and high I/O area array packages (AAP). COTS (commercial off-the-shelf) AAP packaging technologies in high reliability versions with 1.27 mm pitch are now being considered for use in a number of NASA systems including Space Shuttle and Mars Rovers. NASA functional system designs are requiring more and more dense AAP packages and board space, which makes board microvia technology very attractive for effectively routing a large number of package inputs/outputs. However, the reliability of the fine feature microvias including via in pads is unknown for space applications. Understanding process and QA (quality assurance) indicators for reliability are important for low risk insertion of these newly available packages and PWBs. This paper presents literature search as well as test results for a high density board subjected to various thermal cycle and reflow profiles representative of tin-lead and lead-free solder reflow. Microvias sizes ranged from two to six mil with and without filling. Daisy chain microvias monitored during the test and PWBs were cross-sectioned to determine failure and locations. Optical and SEM photographs as well as resistance changes during cycling and Tg/Td (glass transition/decomposition temperature) characterisations are presented.
    Keywords: Electronics and Electrical Engineering
    Type: International Journal of Materials and Structural Integrity; Volume 2; Nos. 1/2; 47-63
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  • 71
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    In:  CASI
    Publication Date: 2018-06-11
    Description: "Raising the bar" in safety performance is a critical challenge for many organizations, including Kennedy Space Center. Contributing-factor taxonomies organize information about the reasons accidents occur and therefore are essential elements of accident investigations and safety reporting systems. Organizations must balance efforts to identify causes of specific accidents with efforts to evaluate systemic safety issues in order to become more proactive about improving safety. This project successfully addressed the following two problems: (1) methods and metrics to support the design of effective taxonomies are limited and (2) influence relationships among contributing factors are not explicitly modeled within a taxonomy.
    Keywords: Quality Assurance and Reliability
    Type: John F. Kennedy Space Center's Technology Development and Application 2006-2007 Report; 98-99; NASA/TM-2008-214740
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  • 72
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    In:  CASI
    Publication Date: 2018-06-11
    Description: Each of the six Apollo landers touched down at unique sites on the lunar surface. Aside from the Apollo 12 landing site located 180 meters from the Surveyor III lander, plume impingement effects on ground hardware during the landings were not a problem. The planned return to the Moon requires numerous landings at the same site. Since the top few centimeters of lunar soil are loosely packed regolith, plume impingement from the lander will eject the granular material at high velocities. A picture shows what the astronauts viewed from the window of the Apollo 14 lander. There was tremendous dust excavation beneath the vehicle. With high-vacuum conditions on the Moon (10 (exp -14) to 10 (exp -12) torr), motion of all particles is completely ballistic. Estimates derived from damage to Surveyor III caused by the Apollo 12 lander show that the speed of the ejected regolith particles varies from 100 m/s to 2,000 m/s. It is imperative to understand the physics of plume impingement to safely design landing sites for future Moon missions. Aerospace scientists and engineers have examined and analyzed images from Apollo video extensively in an effort to determine the theoretical effects of rocket exhaust impingement. KSC has joined the University of Central Florida (UCF) to develop an instrument that will measure the 3-D vector of dust flow caused by plume impingement during descent of landers. The data collected from the instrument will augment the theoretical studies and analysis of the Apollo videos.
    Keywords: Lunar and Planetary Science and Exploration
    Type: John F. Kennedy Space Center's Technology Development and Application 2006-2007 Report; 30-31; NASA/TM-2008-214740
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  • 73
    Publication Date: 2018-06-11
    Description: The benefits of automatic-application code generation are widely accepted within the software engineering community. These benefits include raised abstraction level of application programming, shorter product development time, lower maintenance costs, and increased code quality and consistency. Surprisingly, code generation concepts have not yet found wide acceptance and use in the field of programmable logic controller (PLC) software development. Software engineers at Kennedy Space Center recognized the need for PLC code generation while developing the new ground checkout and launch processing system, called the Launch Control System (LCS). Engineers developed a process and a prototype software tool that automatically translates a high-level representation or specification of application software into ladder logic that executes on a PLC. All the computer hardware in the LCS is planned to be commercial off the shelf (COTS), including industrial controllers or PLCs that are connected to the sensors and end items out in the field. Most of the software in LCS is also planned to be COTS, with only small adapter software modules that must be developed in order to interface between the various COTS software products. A domain-specific language (DSL) is a programming language designed to perform tasks and to solve problems in a particular domain, such as ground processing of launch vehicles. The LCS engineers created a DSL for developing test sequences of ground checkout and launch operations of future launch vehicle and spacecraft elements, and they are developing a tabular specification format that uses the DSL keywords and functions familiar to the ground and flight system users. The tabular specification format, or tabular spec, allows most ground and flight system users to document how the application software is intended to function and requires little or no software programming knowledge or experience. A small sample from a prototype tabular spec application is shown.
    Keywords: Space Sciences (General)
    Type: John F. Kennedy Space Center's Technology Development and Application 2006-2007 Report; 116-117; NASA/TM-2008-214740
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  • 74
    Publication Date: 2018-06-11
    Description: The slosh dynamics in cryogenic fuel tanks under microgravity is a pressing problem that severely affects the reliability of launching spacecraft. After reaching low Earth orbit, the propellant in a multistage rocket experiences large and cyclic changes in temperature as a result of solar heating. Tank wall heating can induce thermal stratification and propellant boiloff, particularly during slosh-inducing vehicle maneuvers. Precise understanding of the dynamic and thermodynamic effects of propellant slosh caused by these maneuvers is critical to mission performance and success. Computational fluid dynamics (CFD) analysis is used extensively within the space vehicle industry in an attempt to characterize the behavior of liquids in microgravity, yet experimental data to quantify these predictions is very limited and reduces confidence in the analytical predictions. A novel approach designed to produce high-fidelity data for correlation to CFD model predictions is being developed with the assistance of Florida Institute of Technology (FIT) and Sierra Lobo, Inc. With few exceptions, previous work in slosh dynamics was theoretical or treated the mass of fuel as a variable of inertia only; such models did not consider the viscosity, surface tension, or other important fluid effects. The challenges in this research are in the development of instrumentation able to measure the required parameters, the computational ability to quantify the fluid behaviors, and the means to assess both the measurements and predictions. The design of this experiment bridges the understanding of slosh dynamics in microgravity by a comprehensive approach that combines CFD tools, dynamic simulation tools, semianalytical models of the predominant fluid effects, and an experimental framework that includes measurement and characterization of liquid slosh in one-degree-of-freedom (DOF) and two-DOF experiments, and ultimately experiments in a NASA low-gravity aircraft.
    Keywords: Fluid Mechanics and Thermodynamics
    Type: John F. Kennedy Space Center's Technology Development and Application 2006-2007 Report; 86-87/88; NASA/TM-2008-214740
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  • 75
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    In:  CASI
    Publication Date: 2018-06-11
    Description: The Autonomous Flight Safety System (AFSS) is a joint KSC and Wallops Flight Facility project that uses tracking and attitude data from onboard Global Positioning System (GPS) and inertial measurement unit (IMU) sensors and configurable rule-based algorithms to make flight termination decisions. AFSS objectives are to increase launch capabilities by permitting launches from locations without range safety infrastructure, reduce costs by eliminating some downrange tracking and communication assets, and reduce the reaction time for flight termination decisions.
    Keywords: Space Transportation and Safety
    Type: John F. Kennedy Space Center's Technology Development and Application 2006-2007 Report; 56-57; NASA/TM-2008-214740
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  • 76
    facet.materialart.
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    In:  CASI
    Publication Date: 2018-06-11
    Description: We can determine distances between objects and points of interest in 3-D space to a useful degree of accuracy from a set of camera images by using multiple camera views and reference targets in the camera s field of view (FOV). The core of the software processing is based on the previously developed foreign-object debris vision trajectory software (see KSC Research and Technology 2004 Annual Report, pp. 2 5). The current version of this photogrammetry software includes the ability to calculate distances between any specified point pairs, the ability to process any number of reference targets and any number of camera images, user-friendly editing features, including zoom in/out, translate, and load/unload, routines to help mark reference points with a Find function, while comparing them with the reference point database file, and a comprehensive output report in HTML format. In this system, scene reference targets are replaced by a photogrammetry cube whose exterior surface contains multiple predetermined precision 2-D targets. Precise measurement of the cube s 2-D targets during the fabrication phase eliminates the need for measuring 3-D coordinates of reference target positions in the camera's FOV, using for example a survey theodolite or a Faroarm. Placing the 2-D targets on the cube s surface required the development of precise machining methods. In response, 2-D targets were embedded into the surface of the cube and then painted black for high contrast. A 12-inch collapsible cube was developed for room-size scenes. A 3-inch, solid, stainless-steel photogrammetry cube was also fabricated for photogrammetry analysis of small objects.
    Keywords: Space Sciences (General)
    Type: John F. Kennedy Space Center's Technology Development and Application 2006-2007 Report; 58-59; NASA/TM-2008-214740
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  • 77
    facet.materialart.
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    In:  CASI
    Publication Date: 2018-06-11
    Description: An experimental study was initiated that included the long-term testing of the following SOFI materials, which make up the majority of the Thermal Protection System of the Shuttle External Tank: NCFI 24-124 (acreage foam) and BX-265 (close-out foam, including the intertank flange and bipod areas). A potential alternate material, NCFI 27-68 (acreage foam with flame retardant removed), was also tested. Fire chemistry testing was completed on samples that were retrieved after aging/weathering at intervals of 3, 6, and 12 months. The testing included three standard test methods: limiting oxygen index (ASTM G125), radiant panel (ASTM E162), and cone calorimeter (ASTM E1354).
    Keywords: Nonmetallic Materials
    Type: John F. Kennedy Space Center's Technology Development and Application 2006-2007 Report; 26-27; NASA/TM-2008-214740
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  • 78
    facet.materialart.
    Unknown
    In:  CASI
    Publication Date: 2018-06-11
    Description: To monitor hydrazine concentrations accurately and safely, hydrazine is converted into a stable derivative that will be monitored and correlated to the actual hydrazine concentration. The hydrazine's reactivity is harnessed to produce a chemical reaction that will form a stable gas-phase derivative which will not react or decompose before it reaches the detector. Hydrazine, monomethylhydrazine, and unsymmetrical dimethylhydrazine belong to a class of compounds known as hypergolic fuels. These fuels self-ignite upon mixing with hypergolic oxidizer (dinitrogen tetroxide), without need of a spark or other ignition source. The resulting reaction produces thrust with exceptionally high energy, making these compounds particularly useful as rocket propellants. Hydrazines are also highly toxic and corrosive. The combined properties of reactivity, corrosivity, and toxicity present the potential for a leak, a disastrous situation in a hypergol-loaded system. Consequently, leak detection is of the utmost importance in protecting equipment and personnel. Hydrazine vapor quantification presents many challenges in addition to the safety concerns. The reactivity of these compounds causes thermal and catalytic decomposition, which results in significant losses. Further complications arise from the sticky nature of hydrazine. Molecules adsorb irreversibly to virtually any surface they make contact with before detection, which results in instrument drift. These properties make it difficult to accurately quantify hydrazines. Current analytical methods seek to minimize these interactions. After an extensive literature search to determine appropriate chemical reactions, a method was devised to quantify hydrazines, without the limitations of monitoring hydrazines.
    Keywords: Space Sciences (General)
    Type: John F. Kennedy Space Center's Technology Development and Application 2006-2007 Report; 76-77; NASA/TM-2008-214740
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  • 79
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    In:  CASI
    Publication Date: 2018-06-11
    Description: Supersonic jet exhaust impinging onto a flat surface is a fundamental flow encountered in space or with a missile launch vehicle system. The flow is important because it can endanger launch operations. The purpose of this study is to evaluate the effect of a landing rocket s exhaust on soils. From numerical simulations and analysis, we developed characteristic expressions and curves, which we can use, along with rocket nozzle performance, to predict cratering effects during a soft-soil landing. We conducted a series of multiphase flow simulations with two phases: exhaust gas and sand particles. The main objective of the simulation was to obtain the numerical results as close to the experimental results as possible. After several simulating test runs, the results showed that packing limit and the angle of internal friction are the two critical and dominant factors in the simulations.
    Keywords: Numerical Analysis
    Type: John F. Kennedy Space Center's Technology Development and Application 2006-2007 Report; 34-35; NASA/TM-2008-214740
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  • 80
    Publication Date: 2018-06-11
    Description: Volatile organic compounds (VOCs) inevitably accumulate in enclosed habitats such as the International Space Station and the Crew Exploration Vehicle (CEV) as a result of human metabolism, material off-gassing, and leaking equipment. Some VOCs can negatively affect the quality of the crew's life, health, and performance; and consequently, the success of the mission. Air quality must be closely monitored to ensure a safe living and working environment. Currently, there is no reliable air quality monitoring system that meets NASA's stringent requirements for power, mass, volume, or performance. The ultimate objective of the project -- the development of a Real-Time, Miniaturized, Autonomous Total Risk Indicator System (RT.MATRIX).is to provide a portable, dual-function sensing system that simultaneously determines total organic carbon (TOC) and individual contaminants in air streams.
    Keywords: Man/System Technology and Life Support
    Type: John F. Kennedy Space Center's Technology Development and Application 2006-2007 Report; 122-123; NASA/TM-2008-214740
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  • 81
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    In:  CASI
    Publication Date: 2018-06-11
    Description: The Ion Beam Propulsion Study was a joint high-level study between the Applied Physics Laboratory operated by NASA and ASRC Aerospace at Kennedy Space Center, Florida, and Berkeley Scientific, Berkeley, California. The results were promising and suggested that work should continue if future funding becomes available. The application of ion thrusters for spacecraft propulsion is limited to quite modest ion sources with similarly modest ion beam parameters because of the mass penalty associated with the ion source and its power supply system. Also, the ion source technology has not been able to provide very high-power ion beams. Small ion beam propulsion systems were used with considerable success. Ion propulsion systems brought into practice use an onboard ion source to form an energetic ion beam, typically Xe+ ions, as the propellant. Such systems were used for steering and correction of telecommunication satellites and as the main thruster for the Deep Space 1 demonstration mission. In recent years, "giant" ion sources were developed for the controlled-fusion research effort worldwide, with beam parameters many orders of magnitude greater than the tiny ones of conventional space thruster application. The advent of such huge ion beam sources and the need for advanced propulsion systems for exploration of the solar system suggest a fresh look at ion beam propulsion, now with the giant fusion sources in mind.
    Keywords: Space Sciences (General)
    Type: John F. Kennedy Space Center's Technology Development and Application 2006-2007 Report; 120-121; NASA/TM-2008-214740
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  • 82
    facet.materialart.
    Unknown
    In:  CASI
    Publication Date: 2018-06-11
    Description: Composite materials with improved thermal conductivity and good mechanical strength properties should allow for the design and construction of more thermally efficient components (such as pipes and valves) for use in fluid-processing systems. These materials should have wide application in any number of systems, including ground support equipment (GSE), lunar systems, and flight hardware that need reduced heat transfer. Researchers from the Polymer Science and Technology Laboratory and the Cryogenics Laboratory at Kennedy Space Center were able to develop a new series of composite materials that can meet NASA's needs for lightweight materials/composites for use in fluid systems and also expand the plastic-additive markets. With respect to thermal conductivity and physical properties, these materials are excellent alternatives to prior composite materials and can be used in the aerospace, automotive, military, electronics, food-packaging, and textile markets. One specific application of the polymeric composition is for use in tanks, pipes, valves, structural supports, and components for hot or cold fluid-processing systems where heat flow through materials is a problem to be avoided. These materials can also substitute for metals in cryogenic and other low-temperature applications. These organic/inorganic polymeric composite materials were invented with significant reduction in heat transfer properties. Decreases of 20 to 50 percent in thermal conductivity versus that of the unmodified polymer matrix were measured. These novel composite materials also maintain mechanical properties of the unmodified polymer matrix. These composite materials consist of an inorganic additive combined with a thermoplastic polymer material. The intrinsic, low thermal conductivity of the additive is imparted into the thermoplastic, resulting in a significant reduction in heat transfer over that of the base polymer itself, yet maintaining most of the polymer's original properties. Normal polymer processing techniques can turn these composite materials into unique, custom parts for ground support, Shuttle, and Constellation needs. We fabricated test specimens of the composite and base materials for thermal and mechanical characterization and found that the strength of the composite material at nominal-percentage loading remained relatively unchanged from the base material.
    Keywords: Space Sciences (General)
    Type: John F. Kennedy Space Center's Technology Development and Application 2006-2007 Report; 74-75; NASA/TM-2008-214740
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  • 83
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    In:  CASI
    Publication Date: 2018-06-11
    Description: Kennedy Space Center has used Aerocoat 7 (AR-7) to protect stainless-steel flex hoses at Launch Complex (LC-39) and hydraulic lines of the Mobile Launcher Platform (MLP) because it provides excellent corrosion protection in low-temperature applications. The Sovereign Company produced AR-7 exclusively for NASA but discontinued production because the coating released high levels of volatile organic compounds (VOCs) and had a significant environmental impact. The purpose of this project was to select and evaluate potential replacement coatings for AR-7 that would be more environmentally sound. The physical and mechanical properties of commercially available coatings were investigated through the Internet. The ideal coating would be fluid enough to penetrate the outer mesh of a stainless-steel flex hose and coat the inner hose, and flexible enough to withstand the movement of the hose, as well as the expansion and contraction of its metal caused by changes in temperature.
    Keywords: Chemistry and Materials (General)
    Type: John F. Kennedy Space Center's Technology Development and Application 2006-2007 Report; 12-13; NASA/TM-2008-214740
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  • 84
    Publication Date: 2018-06-11
    Description: Corrosion is a serious problem that has enormous costs and serious safety implications. Localized corrosion, such as pitting, is very dangerous and can cause catastrophic failures. The NASA Corrosion Technology Laboratory at Kennedy Space Center is developing a smart coating based on pH-sensitive microcapsules for corrosion applications. These versatile microcapsules are designed to be incorporated into a smart coating and deliver their core content when corrosion starts. Corrosion indication was the first function incorporated into the microcapsules. Current efforts are focused on incorporating the corrosion inhibition function through the encapsulation of corrosion inhibitors into water core and oil core microcapsules. Scanning electron microscopy (SEM) images of encapsulated corrosion inhibitors are shown.
    Keywords: Chemistry and Materials (General)
    Type: John F. Kennedy Space Center's Technology Development and Application 2006-2007 Report; 10-11; NASA/TM-2008-214740
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  • 85
    Publication Date: 2018-06-11
    Description: Calculating an accurate nutation time constant (NTC), or nutation rate of growth, for a spinning upper stage is important for ensuring mission success. Spacecraft nutation, or wobble, is caused by energy dissipation anywhere in the system. Propellant slosh in the spacecraft fuel tanks is the primary source for this dissipation and, if it is in a state of resonance, the NTC can become short enough to violate mission constraints. The Spinning Slosh Test Rig (SSTR) is a forced-motion spin table where fluid dynamic effects in full-scale fuel tanks can be tested in order to obtain key parameters used to calculate the NTC. We accomplish this by independently varying nutation frequency versus the spin rate and measuring force and torque responses on the tank. This method was used to predict parameters for the Genesis, Contour, and Stereo missions, whose tanks were mounted outboard from the spin axis. These parameters are incorporated into a mathematical model that uses mechanical analogs, such as pendulums and rotors, to simulate the force and torque resonances associated with fluid slosh.
    Keywords: Space Communications, Spacecraft Communications, Command and Tracking
    Type: John F. Kennedy Space Center's Technology Development and Application 2006-2007 Report; 82-83; NASA/TM-2008-214740
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  • 86
    Publication Date: 2018-06-11
    Description: Regulatory control in biological systems is exerted at all levels within the central dogma of biology. Metabolites are the end products of all cellular regulatory processes and reflect the ultimate outcome of potential changes suggested by genomics and proteomics caused by an environmental stimulus or genetic modification. Following on the heels of genomics, transcriptomics, and proteomics, metabolomics has become an inevitable part of complete-system biology because none of the lower "-omics" alone provide direct information about how changes in mRNA or protein are coupled to changes in biological function. The challenges are much greater than those encountered in genomics because of the greater number of metabolites and the greater diversity of their chemical structures and properties. To meet these challenges, much developmental work is needed, including (1) methodologies for unbiased extraction of metabolites and subsequent quantification, (2) algorithms for systematic identification of metabolites, (3) expertise and competency in handling a large amount of information (data set), and (4) integration of metabolomics with other "omics" and data mining (implication of the information). This article reviews the project accomplishments.
    Keywords: Life Sciences (General)
    Type: John F. Kennedy Space Center's Technology Development and Application 2006-2007 Report; 92-93/94; NASA/TM-2008-214740
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  • 87
    facet.materialart.
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    In:  CASI
    Publication Date: 2018-06-11
    Description: Faults in wiring are a serious concern for the aerospace and aeronautics (commercial, military, and civil) industries. A number of accidents have occurred because faulty wiring created shorts or opens that resulted in the loss of control of the aircraft or because arcing led to fires and explosions. Some of these accidents have resulted in the massive loss of lives (such as in the TWA Flight 800 accident). Circuits on the Space Shuttle have also failed because of faulty insulation on wiring. STS-93 lost power when a primary power circuit in one engine failed and a second engine had a backup power circuit fault. Cables are usually tested on the ground after the crew reports a fault encountered during flight. Often such failures result from vibration and cannot be replicated while the aircraft is stationary. It is therefore important to monitor faults while the aircraft is in operation, when cables are more likely to fail. Work is in progress to develop a cable fault tester capable of monitoring up to 64 individual wires simultaneously. Faults can be monitored either inline or offline. In the inline mode of operation, the monitoring is performed without disturbing the normal operation of the wires under test. That is, the operations are performed unintrusively and are essentially undetectable for the test signal levels are below the noise floor. A cable can be monitored several times per second in the offline mode and once a second in the inline mode. The 64-channel inline cable tester not only detects the occurrence of a fault, but also determines the type of fault (short/open) and the location of the fault. This will enable the detection of intermittent faults that can be repaired before they become serious problems.
    Keywords: Space Sciences (General)
    Type: John F. Kennedy Space Center's Technology Development and Application 2006-2007 Report; 112-113; NASA/TM-2008-214740
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  • 88
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    In:  CASI
    Publication Date: 2018-06-11
    Description: Weather conditions at Kennedy Space Center are extremely dynamic, and they greatly affect the safety of the Space Shuttles sitting on the launch pads. For example, on May 13, 1999, the foam on the External Tank (ET) of STS-96 was significantly damaged by hail at the launch pad, requiring rollback to the Vehicle Assembly Building. The loss of ET foam on STS-114 in 2005 intensified interest in monitoring and measuring damage to ET foam, especially from hail. But hail can be difficult to detect and monitor because it is often localized and obscured by heavy rain. Furthermore, the hot Florida climate usually melts the hail even before the rainfall subsides. In response, the hail monitor array (HMA) system, a joint effort of the Applied Physics Laboratory operated by NASA and ASRC Aerospace at KSC, was deployed for operational testing in the fall of 2006. Volunteers from the Community Collaborative Rain, Hail, and Snow (CoCoRaHS) network, in conjunction with Colorado State University, continue to test duplicate hail monitor systems deployed in the high plains of Colorado.
    Keywords: Space Sciences (General)
    Type: John F. Kennedy Space Center's Technology Development and Application 2006-2007 Report; 54-55; NASA/TM-2008-214740
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  • 89
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    In:  CASI
    Publication Date: 2018-06-11
    Description: SMART is an interactive decision analysis and refinement software system that uses evaluation criteria for discrepant conditions to automatically provide and populate a document/procedure with predefined steps necessary to repair a discrepancy safely, effectively, and efficiently. SMART can store the tacit (corporate) knowledge merging the hardware specification requirements with the actual "how to" repair methods, sequences, and required equipment, all within a user-friendly interface. Besides helping organizations retain repair knowledge in streamlined procedures and sequences, SMART can also help them in saving processing time and expense, increasing productivity, improving quality, and adhering more closely to safety and other guidelines. Though SMART was developed for Space Shuttle applications, its interface is easily adaptable to any hardware that can be broken down by component, subcomponent, discrepancy, and repair.
    Keywords: Computer Systems
    Type: John F. Kennedy Space Center's Technology Development and Application 2006-2007 Report; 104-105; NASA/TM-2008-214740
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  • 90
    Publication Date: 2018-06-11
    Description: A method for measuring the acoustic velocity in a thin sheet of a graphite epoxy composite (GEC) material was investigated. This method uses two identical acoustic-emission (AE) sensors, one to transmit and one to receive. The delay time as a function of distance between sensors determines a bulk velocity. A lightweight fixture (balsa wood in the current implementation) provides a consistent method of positioning the sensors, thus providing multiple measurements of the time delay between sensors at different known distances. A linear fit to separation, x, versus delay time, t, will yield an estimate of the velocity from the slope of the line.
    Keywords: Instrumentation and Photography
    Type: John F. Kennedy Space Center's Technology Development and Application 2006-2007 Report; 48-49/50; NASA/TM-2008-214740
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  • 91
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    In:  CASI
    Publication Date: 2018-06-11
    Description: NASA plans to use a number of onboard viewing ports to measure lunar regolith in situ and to monitor robotic and human activities on the lunar or Martian surface. Because of the size and abundance of dust particles on these bodies, the potential for dust to occlude viewing ports and windows is high enough to threaten system lifetime and reliability, especially when activities rely on relaying video to either a habitat module or controllers on Earth. This project uses a technology being developed by KSC's Electrostatics and Surface Physics Laboratory to remove dust from windowlike surfaces. The technology applies an alternating electric potential to interlaced electrodes. In this application, we use indium tin oxide (ITO) to create various electrode patterns in order to determine the most reliable pattern for dust removal. This technology has application to systems where optical clarity is important. Specifically, this project considers the in situ resource utilization (ISRU) application of a viewing port for Raman spectroscopy, where the electrode pattern on glass would be coated with a scratch-resistant sapphire film (Al2O3).
    Keywords: Metals and Metallic Materials
    Type: John F. Kennedy Space Center's Technology Development and Application 2006-2007 Report; 6-7; NASA/TM-2008-214740
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  • 92
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    In:  CASI
    Publication Date: 2018-06-11
    Description: A 3-D weather radar visualization software program was developed and implemented as part of an experimental Launch Pad 39 Hail Monitor System. 3DRadPlot, a radar plotting program, is one of several software modules that form building blocks of the hail data processing and analysis system (the complete software processing system under development). The spatial and temporal mapping algorithms were originally developed through research at the University of Central Florida, funded by NASA s Tropical Rainfall Measurement Mission (TRMM), where the goal was to merge National Weather Service (NWS) Next-Generation Weather Radar (NEXRAD) volume reflectivity data with drop size distribution data acquired from a cluster of raindrop disdrometers. In this current work, we adapted these algorithms to process data from a cluster of hail disdrometers positioned around Launch Pads 39A or 39B, along with the corresponding NWS radar data. Radar data from all NWS NEXRAD sites is archived at the National Climatic Data Center (NCDC). That data can be readily accessed at 〈http://www.ncdc.noaa.gov /nexradin/〉. 3DRadPlot plots Level III reflectivity data at four scan elevations (this software is available at Open Channel Software, 〈http://www.openchannelfoundation.org/projects/3DRadPlot〉). By using spatial and temporal interpolation/extrapolation based on hydrometeor fall dynamics, we can merge the hail disdrometer array data coupled with local Weather Surveillance Radar-1988, Doppler (WSR-88D) radial velocity and reflectivity data into a 4-D (3-D space and time) picture of hail size distributions. Hail flux maps can then be generated and used for damage prediction and assessment over specific surfaces corresponding to structures within the disdrometer array volume. Immediately following a hail storm, specific damage areas and degree of damage can be identified for inspection crews.
    Keywords: Meteorology and Climatology
    Type: John F. Kennedy Space Center's Technology Development and Application 2006-2007 Report; 52-53; NASA/TM-2008-214740
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  • 93
    Publication Date: 2018-06-11
    Description: Uninsulated areas on cryogenic propellant tanks and feedlines cause moisture in the air to condense or ice to form. Flange joints, bracket supports, expansion bellows, and other cavities are uninsulated by design. These areas cannot be sealed because conventional thermal insulation materials would restrict mechanical articulations. Aerogel-based thermal insulation systems are able to seal critical locations such as the liquid-oxygen (LO2) feedline bellows. A new thermal insulation system was also necessary between the intertank wall, flange, and the liquid-hydrogen (LH2) tank dome, where there is a cavity (or crevice) with an exposed 20-K surface. When nitrogen gas is used for purging within the intertank volume, it condenses on this cold surface. Some solid nitrogen may also form on the colder side of the crevice. Voids or discontinuities within the foam can pressurize and cause areas of foam to weaken and break off, reducing thermal efficiency and creating potentially dangerous debris. To prevent this foam loss, we developed a thermal insulation system using bulk-fill aerogel material and demonstrated it with a one-tenth-scale model of the LH2 intertank flange area
    Keywords: Space Transportation and Safety
    Type: John F. Kennedy Space Center's Technology Development and Application 2006-2007 Report; 28-29; NASA/TM-2008-214740
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  • 94
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    In:  CASI
    Publication Date: 2018-06-11
    Description: This project analyzed the feasibility of placing an electrostatic field around a spacecraft to provide a shield against radiation. The concept was originally proposed in the 1960s and tested on a spacecraft by the Soviet Union in the 1970s. Such tests and analyses showed that this concept is not only feasible but operational. The problem though is that most of this work was aimed at protection from 10- to 100-MeV radiation. We now appreciate that the real problem is 1- to 2-GeV radiation. So, the question is one of scaling, in both energy and size. Can electrostatic shielding be made to work at these high energy levels and can it protect an entire vehicle? After significant analysis and consideration, an electrostatic shield configuration was proposed. The selected architecture was a torus, charged to a high negative voltage, surrounding the vehicle, and a set of positively charged spheres. Van de Graaff generators were proposed as the mechanism to move charge from the vehicle to the torus to generate the fields necessary to protect the spacecraft. This design minimized complexity, residual charge, and structural forces and resolved several concerns raised during the internal critical review. But, it still is not clear if such a system is costeffective or feasible, even though several studies have indicated usefulness for radiation protection at energies lower than that of the galactic cosmic rays. Constructing such a system will require power supplies that can generate voltages 10 times that of the state of the art. Of more concern is the difficulty of maintaining the proper net charge on the entire structure and ensuring that its interaction with solar wind will not cause rapid discharge. Yet, if these concerns can be resolved, such a scheme may provide significant radiation shielding to future vehicles, without the excessive weight or complexity of other active shielding techniques.
    Keywords: Space Sciences (General)
    Type: John F. Kennedy Space Center's Technology Development and Application 2006-2007 Report; 118-119; NASA/TM-2008-214740
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  • 95
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    Unknown
    In:  CASI
    Publication Date: 2018-06-11
    Description: Commodity-free calibration is a reaction rate calibration technique that does not require the addition of any commodities. This technique is a specific form of the reaction rate technique, where all of the necessary reactants, other than the sample being analyzed, are either inherent in the analyzing system or specifically added or provided to the system for a reason other than calibration. After introduction, the component of interest is exposed to other reactants or flow paths already present in the system. The instrument detector records one of the following to determine the rate of reaction: the increase in the response of the reaction product, a decrease in the signal of the analyte response, or a decrease in the signal from the inherent reactant. With this data, the initial concentration of the analyte is calculated. This type of system can analyze and calibrate simultaneously, reduce the risk of false positives and exposure to toxic vapors, and improve accuracy. Moreover, having an excess of the reactant already present in the system eliminates the need to add commodities, which further reduces cost, logistic problems, and potential contamination. Also, the calculations involved can be simplified by comparison to those of the reaction rate technique. We conducted tests with hypergols as an initial investigation into the feasiblility of the technique.
    Keywords: Space Sciences (General)
    Type: John F. Kennedy Space Center's Technology Development and Application 2006-2007 Report; 18-19; NASA/TM-2008-214740
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  • 96
    facet.materialart.
    Unknown
    In:  CASI
    Publication Date: 2018-06-11
    Description: Personnel working in a confined environment can be exposed to hazardous gases, and certain gases can be extremely dangerous even in concentrations as low as a few parts per billion. Nanosensors can be placed in multiple locations over a large area, thus allowing for more precise and timely detection of gas leaks. ASRC Aerospace and its research partners are developing nanosensors to detect various gases, including hydrogen, ammonia, nitrogen tetroxide, and hydrazine. Initial laboratory testing demonstrated the capability to detect these gases in concentrations lower than parts per million, and current testing is evaluating sensitivity at concentration levels three orders of magnitude lower. Testing and development continue to improve the response and recovery times and to increase the sensitivity of the devices. The development team is evaluating different coatings and electrodes to determine the optimum configuration for detecting and identifying a variety of gases. The small footprint of the nanosensors allows several devices to be placed into a single substrate. Each sensor is responsive in a different way to different gases. Embedding multiple devices into a single substrate results in better reliability and less frequent calibrations. The use of different coatings for individual elements of a multichannel sensor allows different gases to be identified. The sensor system is implemented by the use of a custom multichannel signal conditioner amplifier built on a small multichip module. This device processes the output of the sensors and transmits a signal that can be monitored and analyzed remotely.
    Keywords: Space Sciences (General)
    Type: John F. Kennedy Space Center's Technology Development and Application 2006-2007 Report; 110-111; NASA/TM-2008-214740
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  • 97
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    Unknown
    In:  CASI
    Publication Date: 2018-06-11
    Description: The Exploration Supply Chain Simulation project was chartered by the NASA Exploration Systems Mission Directorate to develop a software tool, with proper data, to quantitatively analyze supply chains for future program planning. This tool is a discrete-event simulation that uses the basic supply chain concepts of planning, sourcing, making, delivering, and returning. This supply chain perspective is combined with other discrete or continuous simulation factors. Discrete resource events (such as launch or delivery reviews) are represented as organizational functional units. Continuous resources (such as civil service or contractor program functions) are defined as enabling functional units. Concepts of fixed and variable costs are included in the model to allow the discrete events to interact with cost calculations. The definition file is intrinsic to the model, but a blank start can be initiated at any time. The current definition file is an Orion Ares I crew launch vehicle. Parameters stretch from Kennedy Space Center across and into other program entities (Michaud Assembly Facility, Aliant Techsystems, Stennis Space Center, Johnson Space Center, etc.) though these will only gain detail as the file continues to evolve. The Orion Ares I file definition in the tool continues to evolve, and analysis from this tool is expected in 2008. This is the first application of such business-driven modeling to a NASA/government-- aerospace contractor endeavor.
    Keywords: Ground Support Systems and Facilities (Space)
    Type: John F. Kennedy Space Center's Technology Development and Application 2006-2007 Report; 107/108; NASA/TM-2008-214740
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  • 98
    Publication Date: 2018-06-11
    Description: For long duration missions outside of the protection of the Earth's magnetic field, exposure to solar particle events (SPEs) is a major safety concern for crew members during extra-vehicular activities (EVAs) on the lunar surface or Earth-to-moon or Earth-to-Mars transit. The large majority (~90%) of SPEs have small or no health consequences because the doses are low and the particles do not penetrate to organ depths. However, there is an operational challenge to respond to events of unknown size and duration. We have developed a probabilistic approach to SPE risk assessment in support of mission design and operational planning. Using the historical database of proton measurements during the past 5 solar cycles, the functional form of hazard function of SPE occurrence per cycle was found for nonhomogeneous Poisson model. A typical hazard function was defined as a function of time within a non-specific future solar cycle of 4000 days duration. Distributions of particle fluences for a specified mission period were simulated ranging from its 5th to 95th percentile. Organ doses from large SPEs were assessed using NASA's Baryon transport model, BRYNTRN. The SPE risk was analyzed with the organ dose distribution for the given particle fluences during a mission period. In addition to the total particle fluences of SPEs, the detailed energy spectra of protons, especially at high energy levels, were recognized as extremely important for assessing the cancer risk associated with energetic particles for large events. The probability of exceeding the NASA 30-day limit of blood forming organ (BFO) dose inside a typical spacecraft was calculated for various SPE sizes. This probabilistic approach to SPE protection will be combined with a probabilistic approach to the radiobiological factors that contribute to the uncertainties in projecting cancer risks in future work.
    Keywords: Space Radiation
    Type: 3rd IAASS (International Association for the Space Safety)
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  • 99
    Publication Date: 2018-06-11
    Description: The history of the space industry stretches far and above lunar landings to the construction of the International Space Station. For years, humans have sought to understand the nature of the universe. As society grows in knowledge and curiosity of space, the focus of maintaining the safety of the crew and vehicle habitability is of utmost importance to the National Aeronautics and Space Administration (NASA) community. Through the years, Payload Safety has developed not only as a Panel, but also as part of the NASA community, striving to enhance the efficiency and understanding of how business should be conducted as more International Partners become involved. This is the first in a series of papers and presentations in what is hoped to be an annual update that provides continuous challenges and lessons learned in the areas of communication, safety requirements and processes and other areas which have been vital to the Payload Safety Review Panel (PSRP).
    Keywords: Space Transportation and Safety
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  • 100
    Publication Date: 2018-06-11
    Description: Elastic strain, electrical bias, and localized geometric deformations were applied to elliptical whispering-gallery-mode resonators fabricated with lithium niobate. The resultant perturbation of the mode spectrum is highly dependant on the modal indices, resulting in a discretely reconfigurable optical spectrum. Breaking of the spatial degeneracy of the whispering-gallery modes due to perturbation is also observed.
    Keywords: Optics
    Type: Optics Express; Volume 16; No. 3
    Format: text
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