575 research outputs found
Effects of extreme wave and wind events on morphodynamics of estuaries: An idealized model study
Effects of closure of secondary basins on depths of estuaries: insights from an observational and modeling study of the Western Scheldt estuary [POSTER]
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Actor-Network Theory's take on archaeological types: Becoming, material agency and historical explanation
Within the recent popularity of Actor-Network Theory (ANT) in material culture
studies, scholars tend to lose sight of its origin in ethnography of laboratory work. In
particular, ANT studied how scientific facts are constructed and stabilized in
laboratories so that they become universally accepted, seemingly platonic, categories.
This paper returns to this initial insight, and links it to the long-standing issue of
archaeological types. Analysis of the practices of production, consumption, and
distribution of terra sigillata – Roman archaeology’s most salient pottery type – shows
how it became a category, how it was stabilized as such, and how this process imbued
sigillata with specific agentic properties that allowed it to shape the range of possible
actions in the past. By reframing platonic types as constructed categories, they can
become active elements in our historical narratives.The AHRC and the Faculty of Classics.This version is the author accepted manuscript. The final version has not yet been published
Evaluation of infections of the locomotor system with Indium-111-labeled human IgG scintigraphy
Contains fulltext :
4918.pdf (publisher's version ) (Open Access
Hip and knee arthroplasty infection : In-111-IgG scintigraphy in 102 cases
Contains fulltext :
25988___.pdf (publisher's version ) (Open Access
Short-term health effects in the general population following a major train accident with acrylonitrile in Belgium
Background: Following a train derailment, several tons of acrylonitrile (ACN) exploded, inflamed and part of the ACN ended up in the sewage system of the village of Wetteren. More than 2000 residents living in the close vicinity of the accident and along the sewage system were evacuated. A human biomonitoring study of the adduct N-2-cyanoethylvaline (CEV) was carried out days 14-21 after the accident.
Objectives: (1) To describe the short-term health effects that were reported by the evacuated residents following the train accident, and (2) to explore the association between the CEV concentrations, extrapolated at the time of the accident, and the self-reported short-term health effects.
Methods: Short-term health effects were reported in a questionnaire (n=191). An omnibus test of independence was used to investigate the association between the CEV concentrations and the symptoms. Dose-response relationships were quantified by Generalized Additive Models (GAMs).
Results: The most frequently reported symptoms were local symptoms of irritation. In non-smokers, dose-dependency was observed between the CEV levels and the self-reporting of irritation (p=0.007) and nausea (p=0.007). Almost all non-smokers with CEV concentrations above 100 pmol/g globin reported irritation symptoms. Both absence and presence of symptoms was reported by non-smokers with CEV concentrations below the reference value and up to 10 times the reference value. Residents who visited the emergency services reported more symptoms. This trend was seen for the whole range of CEV concentrations, and thus independently of the dose.
Discussion and conclusion: The present study is one of the first to relate exposure levels to a chemical released during a chemical incident to short-term (self-reported) health effects. A dose-response relation was observed between the CEV concentrations and the reporting of short-term health effects in the non-smokers. Overall, the value of self-reported symptoms to assess exposure showed to be limited. The results of this study confirm that a critical view should be taken when considering self-reported health complaints and that ideally biomarkers are monitored to allow an objective assessment of exposure
The driving mechanisms behind morphological changes in the Western Scheldt mouth area over the past two centuries – a data analysis
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