949 resultados para Walker Museum of Paleontology


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No issue published in Dec. 1918.

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"The accompanying plates were prepared and printed by the United States government for the Report on Tertiary Vertebrata by E. D. Cope, forming volumes III and IV of the final report of the Geological and geographical survey of the territories, F. V. Hayden in charge. The first part of this Report (volume III) treating of the Eocene and a part of the Oligocene vertebrates was completed and published in 1885. The second part, treating of the remainder of the Oligocene and all the Miocene vertebrates was never completed. A large number, but not all, of the plates for this part were prepared and printed, together with seven plates for a contemplated report on Permian Vertebrata.

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Front: Kamer Aga-Oglu, James B. Griffin, Volney Jones, Loring Brace. Back: Karl Hutterer, Kent Flannery, Henry T. Wright, Chris Peebles, Jeff Parsons, Robert Whallon, Dick Ford

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Mode of access: Internet.

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The collection was presented to the British museum (Nat. Hist.) by W. Wilson Saunders.

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Thesis (Master's)--University of Washington, 2016-06

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Thesis (Master's)--University of Washington, 2016-06

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Several vertebrae of a sauropterygian specimen have been recovered in Fuencaliente de Medinaceli (Soria Province, Castilla y León, Spain). The remains come from Middle–Upper Triassic Muschelkalk Facies. This finding represents the first documented evidence of a Triassic tetrapod in Castilla y León. The vertebrae belong to Nothosaurus, a sauropterygian genus found in Europe, Middle East, North of Africa and China. This genus is poorly-known in the Iberian record. The new remains constitute the first evidence of the species Nothosaurus giganteus, or a related taxon, in the Iberian Peninsula. This study reveals the occurrence of at least two species of the sauropterygian Nothosaurus in the Spanish record.

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The preservation of modern and contemporary art and costume collections in museums requires a complete understanding of their constituent materials which are often synthetic or semi-synthetic polymers. An extraordinary amount of quality information can be gained from instrumental techniques, but some of them have the disadvantage of being destructive. This paper presents a new totally integrated non-invasive methodology, for the identification of polymers and their additives, on plastic artefacts in museums. NMR (nuclear magnetic resonance) and in-situ FTIR-ATR (attenuated total reflection infrared spectroscopy) combination allowed the full characterization of the structure of thesematerials and correct identification of each one. The NMR technique applied to leached surface exudates identified unequivocally a great number of additives, exceeding the Py–GC–MS analysis of micro-fragments in number and efficiency. Additionally, in-situ FTIR-ATR provided exactly the same information of the destructive μ-FTIR about the polymer structure and confirmed the presence of some additives. Eight costume pieces (cosmetic boxes and purses), dating to the beginning of the 20th century and belonging to the Portuguese National Museum of Costume and Fashion, were correctly identified with this new integrated methodology, as beingmade of plastics derived fromcellulose acetate or cellulose nitrate polymers, contradicting the initial information that these pieces were made of Bakelite. The identification of a surprisingly large number of different additives forms an added value of this methodology and opens a perspective of a quick and better characterization of plastic artefacts in museum environments.

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This book Relationship-based Procurement Strategies for the 21st Century, is an important foundation document to better understand social and industry drivers from traditional adversarial contracting techniques to a more relationship-based approach building on the strengths of individual partners. This publication has evolved from the Commonwealth Government’s sponsorship of the case study of The National Museum of Australia Project—the first building construction project (as distinct from a resource development or engineering project) undertaken by a project alliance anywhere in the world.