منابع مشابه
Smithsonian Microbeam Standards
This is a short history of the Smithsonian Microbeam Standards; their sources, selection, preparation, and analyses. Fifty-eight minerals, natural glasses, and synthetic samples have been characterized in the past 25 years. During that time, over 750 requests were received for approximately 11 000 individual samples. These reference samples are referred to as the Smithsonian Microbeam Standards.
متن کاملMicrobeam Characterization of Corning Archeological Reference Glasses: New Additions to the Smithsonian Microbeam Standard Collection
An initial study of the minor element, trace element, and impurities in Corning archeological references glasses have been performed using three microbeam techniques: electron probe microanalysis (EPMA), laser ablation ICP-mass spectrometry (LA ICP-MS), and secondary ion mass spectrometry (SIMS). The EPMA results suggest a significant level of heterogeneity for a number of metals. Conversely, h...
متن کاملSmithsonian Annals of Flight Smithsonian Contributions to Anthropology Smithsonian Contributions to Astrophysics Smithsonian Contributions to Botany Smithsonian Contributions to the Earth Sciences Smithsonian Contributions to Paleobiology Smithsonian Contributions to ^oology Smithsonian Studies in History and Technology
Eisenberg, J. F., and Edwin Gould. The Tenrecs: A Study in Mammalian Behavior and Evolution. Smithsonian Contributions to Zoology, 27: 1-137. 1970.—Tenrecs are found only on the island of Madagascar. The biology of the Tenrecidae is described by field and laboratory studies that focused on comparisons of social behavior and communication in several species. Detailed observations on the behavior...
متن کاملSmithsonian miscellaneous collections
By doctor E. MASCHA [The following paper on the " Structure of Wing-Feathers " gives an account of an investigation conducted by Doctor E. Mascha under the direction of Professor R. von Lendenfeld, of the Imperial German University in Prague. The original German text of this paper is to be published in the Zcitschrift fiir zvisscnschaftUchc Zoologic. Doctor von Lendenfeld, who was a competitor ...
متن کاملSmithsonian miscellaneous collections
The first part of this paper deals with the general geology and geography of the region from which the Cretaceous fishes of Ceara come, while the second part is a systematic description of the fishes themselves. The collection is especially important because it contains all of the species hitherto described from Ceara, besides three new genera and four new species. The large number of duplicate...
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ژورنال
عنوان ژورنال: Journal of Research of the National Institute of Standards and Technology
سال: 2002
ISSN: 1044-677X
DOI: 10.6028/jres.107.054