1,265 research outputs found

    Conference Photos

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    This item contains photographs taken at the Seventh Biennial International Conference of Greek Studies

    Conference Photos

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    Conference photos taken at the Fifth Biennial International Conference of Greek Studies, 2003

    Photograph of a Abraham Lincoln Impersonator Exiting a Stage

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    Color snapshot photo of unidentified actor as A. Lincoln. The unidentified actor is shown exiting a stage. The unidentified actor faces the right side of the page. There is a large speaker in the center right of the image. photograph produced by Fox Photos (American, 1909-current)https://scholarsjunction.msstate.edu/fvw-artifacts/4757/thumbnail.jp

    Photograph of Sign for Route of Abraham Lincoln 1832 and 1859

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    Snapshot photo of a marker indicating route of A. Lincoln in Wisconsin in 1832. The sign is brown with white colored lettering. The sign is affixed to a fence. There is also grass and trees in the foreground and background. photograph produced by Fox Photos (American, 1909-current)https://scholarsjunction.msstate.edu/fvw-artifacts/4707/thumbnail.jp

    Henri Temianka Photographs, Professional Acquaintances

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    https://digitalcommons.chapman.edu/temianka_photos/1140/thumbnail.jp

    From mine to apothecary: an archaeo-biomedical approach to the study of the Greco-Roman lithotherapeutics industry

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    Western biomedicine has only partially developed its own tradition of mineral medicinals (lithotherapeutics), at least compared to botanicals. This is perhaps because these minerals were site-specific, and fundamental information associated with the empirical processes of mineral extraction, beneficiation, storage, trade and preparation was not widely available. In other words, there are many and serious breaks in the multi-link chain from mine to apothecary. This long-term investigation aims to rebuild this chain, on a mineral-bymineral basis, by pulling together the extant documentary record, material culture, mineralogy, geochemistry and microbial ecology, as well as by testing against known pathogens as an indicator of their antimicrobial activity. Critical to understanding the nature and efficacy of lithotherapeutics is the recognition that these materials need to be investigated simultaneously at two levels: the empirical (ancient sources and practices); and the biomedical (application of physical and biological sciences). Both approaches require the same starting point, namely the field (mine or quarry) and in particular the ‘point of contact’ (relationship) between minerals and their microbiome

    Not to be Opened Until the Year 8113

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    Clipping from unidentified newspaper of Thornwell Jacobs president of Oglethorpe University studying plans for a time capsule.https://digitalcommons.wku.edu/exhibit_2015/1041/thumbnail.jp

    Town of Winterport Property Maps

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    Early extractive iron metallurgy in N Greece : a unified approach to regional archaeometallurgy

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    Aspects of early Greek extractive iron metallurgy are investigated here, for the first time, with particular emphasis on Macedonia, Greece's most metals-rich province. The subject is approached experimentally by considering equally the ores, slag and artefacts of iron in Macedonia, through the analytical examination of archaeological slag and artefacts, the experimental smelting of Macedonian ores and subsequent analytical investigation of the slag and blooms produced. The mineral resources geology of Macedonia is presented. The historical background to mining and metal working in Macedonia from the Early Iron Age (tenth century BC) to the turn of the present century is documented. The literature on the introduction of iron into Greece, and the East Mediterranean more generally, is critically reviewed, and in the light of results obtained, especially from Thasos, it is argued that the origins of iron making in Macedonia, if not elsewhere in Greece, should be sought locally during the Late Bronze Age. Despite the absence of excavated furnace remains, it has been possible, through analytical examination of metallurgical waste, to trace the operation of the bloomery in Macedonia continuously for nearly thirty centuries. That a considerable variety of iron ores were exploited was elucidated by the analysis of slag inclusions in a large number of iron artefacts from Vergina and from sites on Thasos and the East Macedonian Mainland, spanning chronologically the Early Iron Age to the Byzantine period. The titanium-rich magnetite sands on Thasos and at Vrontou on the Mainland were shown to have been worked from the Hellenistic/Roman to the turn of this century. A second century BC nickel-rich bloom found at the Hellenistic site at Petres in West Macedonia testified, for the first time, to the smelting of nickel-rich iron laterites in Greece, while the manganese-rich iron deposits in Palaia Kavala district were worked for their precious metals content, probably during Ottoman times and perhaps as early as the Classical period. It is suggested that the Skapte Hyle of the classical texts may be located in the Palaia Kavala district. A fresh appraisal of the depiction of furnaces on Black and Red Figure Attic vases of the sixth and fifth centuries BC suggests that the bloomery process may have developed at that time to a level not previously suspected. The classical texts, the function of the cauldron on the furnace top and experimental meltings carried out in the process of this work all point to the production of wrought iron/steel through the decarburisation of high carbon iron in a fining hearth. It is argued that the furnaces depicted on the vases are themselves fining hearths, the cauldron sealing the furnace top in order for the air blast to be directed over the molten mass

    Voltage-Doubler RF-to-DC Rectifiers for Ambient RF Energy Harvesting and Wireless Power Transfer Systems

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    Wireless Power Transfer (WPT) is promoted as a key enabling technology (KET) for the widespread use of batteryless Internet of Things (IoT) devices and for 5G wireless networks. RF-to-DC rectifiers are essential components for the exploitation of either ambient RF power or wireless transmitted power from a dedicated source. There are several alternative rectifier topologies which can be selected depending on the desired wireless charging scenario and may include one or more diodes. For full rectification, a minimum of two diodes are needed. The current chapter discusses various implementations of voltage-doubler designs, which revolve around the basic topology of two diodes and two capacitors. Schottky diodes are usually used, in combination with lumped capacitors. Off-the-shelf diodes include both separate diodes and integrated voltage-doubler topologies in a single package. Rectifiers are inherently narrowband, non-linear devices, and the RF-to-DC efficiency, which is usually the figure of merit, depends non-linearly on both the termination load and the received RF power. The bandwidth of the rectifier depends on the preceding matching network
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