Browsing by Author "McDonald, A."

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    Ancient Biographies: Trace element analysis to investigate provenance and transportation mechanism of Late Bronze Age glass
    (Equinox Publishing, 2019-05-16) Kemp, Victoria; McDonald, A.; Shortland, Andrew J.
    LA-ICPMS analysis was carried out on a scaraboid blue glass bead (Hunterian Museum Glasgow, D.1921.39) excavated from Tomb 27 in Gurob, in the Southern Fayum region of Egypt. Gurob is known to have been the site of a ‘harem palace’ established in the reign of Tuthmosis III (1479-1425 BC). The tomb was located at the northernmost point of the New Kingdom cemetery and was undisturbed, containing the remains of seven females and two children, and was dated by the excavators to between the reigns of Amenophis I (1525-1504 BC) and Tuthmosis III. The glass scarab was coloured by copper and trace element values of La, Cr, Ti and Zr exhibited compositional consistency with glasses from Mesopotamia, rather than from Egypt. Therefore, the glass scarab represents a rare example of Mesopotamian glass to be discovered in Egypt, in addition to being some of the earliest glass found. The finds support iconographic references in the Hall of the Annals at Karnak to the import of early glass into Egypt. The implication is that these beads represent luxury items transported into Egypt by high-ranking foreign women perhaps in connection with the Gurob harem palace.
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    LA-ICP-MS analysis of late bronze age blue glass beads from Gurob, Egypt
    (Wiley, 2019-10-25) Kemp, Victoria; McDonald, A.; Brock, Fiona; Shortland, Andrew J.
    LA-ICP-MS analysis was undertaken on 37 blue glass beads excavated from a tomb in Gurob, in the Southern Fayum region of Egypt. The tomb was undisturbed, contained the remains of seven females and two children, and dated between the reigns of Amenhotep I (1525-1504 BC) and Tuthmosis III (1479-1425 BC). The glass beads are coloured by copper and the trace element concentrations are compositionally consistent with glasses from Mesopotamia, rather than from Egypt. Therefore, these glass beads represent a rare example of Mesopotamian glass to be discovered in Egypt, in addition to being some of the earliest glass found. Gurob is known to have been the site of a ‘harem palace’ established in the reign of Tuthmosis III (1479-1425 BC), the implication being that these beads represent luxury items transported into Egypt by high-ranking foreign women, possibly in connection with the harem palace.
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    'Short' S.C.7 turbo-skyvan Mk.2 Economics of the crop-spraying role
    (College of Aeronautics, 1966) McDonald, A.
    Short Eros. and Harland Ltd. have carried out a brief preliminary study of the Turbo-Skyvan for crop-spraying and have derived payload data and operating costs on a provisional basis. Further studies have been carried out by the College to assess the Turbo-Skyvan on the basis of economic comparison with typical available aircraft operating on agricultural work and this report deals with the detail of these comparisons. Conclusions are that under European small-field conditions 3 , the Skyvan only becomes competitive when advantage is taken of its versatility to provide a single operator with a number of roles, one of which would be cropspraying, thereby increasing utilisation to more realistic figures (1500 and 2000 hrs/yr. have been investigated, in addition to the average 'crop-spraying only' utilisation of 400 hrsiyr). Under Afro-Asian operating conditions, with larger fields and greater areas ', the above comments are still substantially true but, when the higher utaisations are considered, the Skyvan is cheaper to operate and has a higher application capacity than its assumed competitors.