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A First Case of Human Trichuriasis from a Roman Lead Coffin in France
Benjamin Dufour,Maxence Segard,Matthieu Le Bailly 대한기생충학열대의학회 2016 The Korean Journal of Parasitology Vol.54 No.5
A paleoparasitological study was carried out on 2 lead coffins recovered from the Roman site of Jaunay-Clan (near Poitiers, France). For the first time, this particular type of burial gave positive parasitological results, and eggs of the whipworm Trichuris trichiura were identified in 1 individual. In the present case, thanatomorphose associated with funerary practices may explain the scarcity of the recovered eggs. However, human whipworm has now been observed in 9 individuals dated to the Roman period. The very high frequency of Trichuris sp. eggs in Roman archaeological sites (up to 80%) suggests that fecal peril, hygiene, and waste management were problematic during this period. Finally, due to the fact that very few analyses have been conducted on human bodies dated to the Roman period, more analyses must be performed in the future to provide further information about diseases in the Roman world.
Benjamin Dufour,Emilie Portat,Bruno Bazin,Matthieu Le Bailly 대한기생충학열대의학회 2019 The Korean Journal of Parasitology Vol.57 No.6
Paleoparasitological analysis was carried on 4 Merovingian skeletons, dated from the late-5th to the late-9th centuries, and recovered in the church of Saint-Martin-au-Val in Chartres (Center region, France). The corpses were buried in stone sarcophagi, which were still sealed at the time of excavation. Parasite marker extraction was conducted on sediment samples taken from the abdominal and pelvic regions, but also on samples taken from under the head and the feet as control samples. Microscopic observation revealed the presence of 3 gastrointestinal parasites, namely the roundworm (Ascaris lumbricoides), the whipworm (Trichuris trichiura) and the fish tapeworm (genus Diphyllobothrium). This analysis contributes to a better knowledge of the health status and the lifestyle of ancient medieval populations during the Merovingian period, for which very few paleoparasitological data were available, up until now. It demonstrates the presence of the fish tapeworm for the first time during this period.
La contamination du sacré Pensée magique ou réalité sémiotique
Stéphane Dufour 고려대학교 응용문화연구소 2017 에피스테메 Vol.0 No.17
This paper proposes a socio-semiotic analysis of the question of contamination of the sacred on the basis of contact with relics, which runs through numerous anthropological studies. While anthropological texts describe the idea of transferring the sacred from relics as a chemical operation with clearly defined consequences, they say nothing about the question of meaning. How is meaning being created when belief has it that the sacred is spread about, projected from the relic onto other objects? How can the contamination of the sacred be translated into the contamination of sacred meaning?
Extraction of a crack opening from a continuous approach using regularized damage models
Frédéric Dufour,Gilles Pijaudier-Cabot,Marta Choinska,Antonio Huerta 사단법인 한국계산역학회 2008 Computers and Concrete, An International Journal Vol.5 No.4
Crack opening governs many transfer properties that play a pivotal role in durability analyses. Instead of trying to combine continuum and discrete models in computational analyses, it would be attractive to derive from the continuum approach an estimate of crack opening, without considering the explicit description of a discontinuous displacement field in the computational model. This is the prime objective of this contribution. The derivation is based on the comparison between two continuous variables: the distribution if the effective non local strain that controls damage and an analytical distribution of the effective non local variable that derives from a strong discontinuity analysis. Close to complete failure, these distributions should be very close to each other. Their comparison provides two quantities: the displacement jump across the crack [U] and the distance between the two profiles. This distance is an error indicator defining how close the damage distribution is from that corresponding to a crack surrounded by a fracture process zone. It may subsequently serve in continuous/discrete models in order to define the threshold below which the continuum approach is close enough to the discrete one in order to switch descriptions. The estimation of the crack opening is illustrated on a one-dimensional example and the error between the profiles issued from discontinuous and FE analyses is found to be of a few percents close to complete failure.
Safety and efficiency of molnupiravir for COVID-19 patients with advanced chronic kidney disease
( Inès Dufour ),( Arnaud Devresse ),( Anais Scohy ),( Caroline Briquet ),( Hélène Georgery ),( Philippe Delaey ),( Julien De Greef ),( Eric Goffin ),( Laura Labriola ) 대한신장학회 2023 Kidney Research and Clinical Practice Vol.42 No.2