65,770 research outputs found

    Slosh alleviator Patent

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    Slosh and swirl alleviator for liquid propellant tanks during transport and fligh

    X-ray determination of parts alignment

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    A method for determining the alignment of adjoining metal objects is provided. The method comprises producing an X-ray image of adjoining surfaces of the two metal objects. The X-ray beam is tangential to the point the surfaces are joined. The method is particularly applicable where the alignment of the two metal objects is not readily susceptible to visual inspection

    A Critical Introduction

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    The Minority Experience at Gettysburg College: The Hanson Years (1961-1977)

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    The years of C. Arnold Hanson’s term as president at Gettysburg College were years of turbulence, change, and challenge. Rising to the position of president in 1961, in the dawning of a dynamic era of modern American history, C. A. Hanson served well into the middle of the next decade, during which time he helped guide Gettysburg College through some of its most trying and vital changes. This was the era of the hippie and the free thinker, the era of the Women’s and Civil Rights Movements, the era of Vietnam and anti-war protests, the era that shaped modern American society and culture. During this period, one of the areas in which the most dramatic changes occurred was in the sphere of Civil Rights; Gettysburg was far from the forefront in dealing with bigotry, but it did confront the race issue. As this occurred on the national scale, efforts were made at Gettysburg to follow suit. Sadly, this was often difficult and unsuccessful, occurring “in fits and starts.” During C. A. Hanson’s tenure as president, minorities experienced discrimination as they pursued equal opportunities in education, faculty and administrators struggled to construct a successful strategy for integration, students brought down racial barriers through interaction, and above all, many African Americans demonstrated extraordinary strength of character in their fight for equality and acceptance into the Gettysburg College community. [excerpt

    Description of a new genus and species of hummingbird from Panama

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    Since January, 1911, Mr. E. A. Goldman, of the Biological Survey, U.S.Department of Agriculture, has been detailed to the Smithsonian Biological Survey of the Panama Canal Zone to collect mammals and birds in the Canal Zone and adjacent parts of Panama... (Document contains 4 pages

    Fluid Borders, Concrete Locations: Epicenters of Cross-Cultural Interaction in the Eighteenth Century Borderland of the Great Lakes

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    In a recent article on the advent of borderlands history as a prominent field of historical scholarship, Pekka Hämäläinen and Samuel Truett described borderlands as “realms where boundaries are also crossroads, peripheries are also central places, homelands are also passing-through places, and the end points of empire are also forks in the road.” One such region that certainly fits this definition of a borderland and unquestionably hosts such specific crossroads and cultural junctions is the maritime region of the Great Lakes of North America. [excerpt

    Application of NASTRAN to a fluid solids unit in the petroleum industry

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    The application of NASTRAN to the design of a fluid solids unit plenum/cyclone/dipleg assembly is described. The major loads considered are thermal, pressure, and gravity. Such applications are of interest in the petroleum industry since the equipment described is historically critical

    Fighter aircraft flight control technology design requirements

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    The evolution of fighter aircraft flight control technology is briefly surveyed. Systems engineering, battle damage considerations for adaptive flutter suppression, in-flight simulation, and artificial intelligence are briefly discussed

    Study of growth parameters for refractory carbide single crystals Quarterly status report no. 7, Sep. 1 - Dec. 1, 1965

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    Crystal growth experiments to explore influence of atmospheric compositions, during melting, on crystal stochiometry emphasizing determination of tantalum solubilit
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