657 resultados para Usher, Robin


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Mode of access: Internet.

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Alkaline photocopy paper replacement.

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Mode of access: Internet.

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[Ensian caption: "Michigan's great runner Peter Gray passes the baton to Robin Varian as the Wolverines rush through the one-mile relay. These two, along with Laird Sloan and Dick Flodin, proved one of the top relay outfits in the conference."]

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Label pasted on front end-paper reads: ... The downfall of Robert E. of Huntington, by Anthony Munday. Date of only known original edition, 1601 Staged, 1598-9. Reproduced in facsimile [Tudor facsimile texts] 1913.

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von Walter Scott ; neu übersetzt von Dr. C. Herrmann

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von Walter Scott ; neu übersetzt von Dr. C. Herrmann

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We isolated 12 polymorphic microsatellite markers for the grey-headed robin Poecilodryas albispecularis from genomic libraries enriched for (AAGG)n and (AACC)n repetitive elements and characterized them in 12 individuals. The number of alleles ranges from three to nine per locus with the observed heterozygosity ranging from 0.33 to 0.90. These markers will be useful for analysis of questions concerning population genetic structure and testing models of speciation.

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An international round robin study of the viscosity measurements and aging of fast pyrolysis bio-oil has been undertaken recently, and this work is an outgrowth from that effort. Two bio-oil samples were distributed to two laboratories for accelerated aging tests and to three laboratories of long-term aging studies. The accelerated aging test was defined as the change in viscosity of a sealed sample of bio-oil held for 24 h at 80 °C. The test was repeated 10 times over consecutive days to determine the intra-laboratory repeatability of the method. Other bio-oil samples were placed in storage at three temperatures, 21, 5, and -17 °C, for a period of up to 1 year to evaluate the change in viscosity. The variation in the results of the accelerated aging test was shown to be low within a given laboratory. The long-term aging studies showed that storage of a filtered bio-oil under refrigeration can minimize the amount of change in viscosity. The accelerated aging test gave a measure of change similar to that of 6-12 months of storage at room temperature for a filtered bio-oil. Filtration of solids was identified as a key contributor to improving the stability of the bio-oil as expressed by the viscosity based on results of the accelerated aging tests as well as long-term aging studies. Only the filtered bio-oil consistently gave useful results in the accelerated aging and long-term aging studies. The inconsistency suggests that better protocols need to be developed for sampling bio-oils. These results can be helpful in setting standards for use of bio-oil, which is just coming into the marketplace. © 2012 American Chemical Society.