1,265 research outputs found
Conference Photos
This item contains photographs taken at the Seventh Biennial International Conference of Greek Studies
Conference Photos
Conference photos taken at the Fifth Biennial International Conference of Greek Studies, 2003
Photograph of a Abraham Lincoln Impersonator Exiting a Stage
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
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
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
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
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
Early extractive iron metallurgy in N Greece : a unified approach to regional archaeometallurgy
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
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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