20,027 research outputs found

    Standing on the Shoulders of Giants: The Cleft Palate-Craniofacial Journal (1964-1989)Electronic Archive

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    Current research and clinical practice in cleft palate and craniofacial disorders “stands on the shoulders of giants” who came before us. To enable thirty years of seminal research articles to become digitally available to a worldwide community of students, scholars, and clinicians, a collaboration was forged in 2004 between University of Pittsburgh’s Digital Research Library (DRL) and ACPA, (with the agreement of Allen Press), to create an electronic archive of the first thirty years of the Cleft Palate Craniofacial Journal . The work was performed pro bono, by all parties

    Presidential Leadership in the Space Age

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    Mankind’s quest to reach the moon consisted of many people in leadership positions. In the US, however, many of the decisions behind the space race, especially funding for it, were made by four men: Dwight D. Eisenhower, John F. Kennedy, Lyndon Baines Johnson, and Richard Nixon. While some presidents (namely Kennedy) receive more credit than others for their work on bringing man to the moon, each of them passed influential policy that was vital in the development of Apollo: Eisenhower founded NASA and began research on the Saturn V, Kennedy gave vision and urgency to the program, Johnson gave massive funding to it, and Nixon oversaw the program and decided what would come next

    Barely the Moon

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    Mass loading of the Earth's magnetosphere by micron size lunar ejecta. 2: Ejecta dynamics and enhanced lifetimes in the Earth's magnetosphere

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    Extensive studies were conducted concerning the indivdual mass, temporal and positional distribution of micron and submicron lunar ejecta existing in the Earth-Moon gravitational sphere of influence. Initial results show a direct correlation between the position of the Moon, relative to the Earth, and the percentage of lunar ejecta leaving the Moon and intercepting the magnetosphere of the Earth at the magnetopause surface. It is seen that the Lorentz Force dominates all other forces, thus suggesting that submicron dust particles might possibly be magnetically trapped in the well known radiation zones

    Space trajectories program for IBM 7090

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    Space trajectories Program studies the motion of a space probe confined to the solar system and influenced by the nonspherical Earth and Moon, and the point masses defined by the Sun, Venus, Mars, and Jupiter. It is written in the FORTRAN Assembly Program language

    Ar-39-Ar-40 of achondrites: Evidence for a lunar-like cataclysm

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    The observation that the K-Ar, Pb-Pb, and Rb-Sr ages of a significant number of lunar highland rocks were reset in the interval of 4.1-3.8 Ga ago led to the concept of a cataclysmic bombardment of the moon during this period. An important consideration for understanding the early bombardment history of the solar system, including the moon, is whether evidence also exists in meteorites for resetting of radiometric ages by cataclysmic bombardment of their parent bodies. A comparison of Ar-39-Ar-40 ages of achondritic meteorites with ages of lunar highland rocks should help elucidate the nature of the early bombardment of the solar system. We are participating in various consortia studies of primarily Antarctic eucrites and howardites for which we measured Ar-39-Ar-40 ages of various clasts and matrix samples. The results of these studies are presented

    Letter from Rosella Moon

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    Letter about the different photos that Rosella Moon lent to Myron D, Goldsmithhttps://digitalcommons.georgefox.edu/alaskan_mission_papers/1080/thumbnail.jp
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