1,984 research outputs found
[Introduction to] Religion and the Medieval and Early Modern Global Marketplace
Religion and the Medieval and Early Modern Global Marketplace brings together scholars from a variety of disciplines to examine the intersection, conflict, and confluence of religion and the market before 1700.
Each chapter analyzes the unique interplay of faith and economy in a different locale: Syria, Ethiopia, France, Iceland, India, Peru, and beyond. In ten case studies, specialists of archaeology, art history, social and economic history, religious studies, and critical theory address issues of secularization, tolerance, colonialism, and race with a fresh focus. They chart the tensions between religious and economic thought in specific locales or texts, the complex ways that religion and economy interacted with one another, and the way in which matters of faith, economy, and race converge in religious images of the pre- and early modern periods. Considering the intersection of faith and economy, the volume questions the legacy of early modern economic and spiritual exceptionalism, and the ways in which prosperity still entangles itself with righteousness.
The interdisciplinary nature means that this volume is the perfect resource for advanced undergraduates, postgraduates, and scholars working across multiple areas including history, literature, politics, art history, global studies, philosophy, and gender studies in the medieval and early modern periodshttps://scholarship.richmond.edu/bookshelf/1386/thumbnail.jp
A Feasibility Study of Airborne Radiometric Survey for UK Fallout
Brief details are presented of a feasibility study of the use of aerial radiometric survey techniques to map local variations of fallout and natural radioactivity in Scotland
A Feasibility Study of Airborne Radiometric Survey for UK Fallout
Brief details are presented of a feasibility study of the use of aerial radiometric survey techniques to map local variations of fallout and natural radioactivity in Scotland
The Use of Aerial Radiometrics for Epidemiological Studies of Leukaemia: a Preliminary Investigation in SW England
The report presents the results and conclusions of a pilot study designed to evaluate the potential use of aerial gamma ray measurements in epidemiological investigations of leukaemia. The sources of natural radiation were reviewed and associations between U, Th and K and dose to the human population noted. The association between leukaemia and radiation exposure was also noted, in particular the clear evidence from high dose studies, the potential importance of radium and radon, and the difficulties of achieving statistical significance in case-control studies at environmental dose rates due to the need for large area surveys covering large populations.
Aerial surveys were conducted in three disjoint grids selected by the Leukaemia Research Fund Clinical epidemiology unit at Leeds University. The areas covered some 2,500 km, and were surveyed in a 50 hour fieldwork period in September 1989. Over 4800 gamma spectra were recorded, representing between 200 and 400 times the number of measurements per unit area of the NRPB national maps, and an area sampling density some 106 times greater. The data were used to estimate specific activities of potassium, uranium and thorium. Environmental infinite matrix alpha and beta dose rates were calculated using equilibrium assumptions and gamma ray dose rates were estimated directly from the spectra. Mean values for gamma dose rates were compatible with NRPB estimates for the counties. The detailed gamma ray maps demonstrate that both radiation levels, and quality show local variations within each survey grid of a magnitude comparable with that observed in whole of the UK in national maps. Considerable caution is thus needed in using national data for epidemiological studies. Local variations, which can be clearly associated with underlying geological and geomorphological structures should be taken into account in such work. No significant enhancements were noted due to activities at the Devonport Dockyard, in keeping with published ground based monitoring. The main enhancement in the vicinity of Hinkley Point was due to the authorised discharge of 41Ar, which was clearly detected in the survey.
Two methods for associating the radiometric results with epidemiological data were developed and applied. A case-control study was performed by matching case and control locations to individual spatially averaged radiometric results and comparing the associated radiation levels. The second method evaluated radiation stratified incidence rates by combining stratified case radiometric data with similar information estimated from a population density surface constructed for the grids. Weighted regression analysis was used to assess any associations. The results are in general limited by the low number of leukaemia cases within the study area, resulting in statistically weak or insignificant links. However positive associations between equivalent uranium and leukaemia, particularly in the grid including the rivers Tavy and Tamar, were observed in both case-control and incidence rate analyses. A negative association with equivalent Thorium observed in the incidence rate analysis was not reproduced in case-control comparisons.
This approach could be extended to larger area studies to increase statistical power. In parallel investigations of the relationship between environmental and individual radiation exposure, and investigation of the potential association between radium, or radon and leukaemia following the trends observed here would be appropriate
Hyphal Orientation of Candida albicans Is Regulated by a Calcium-Dependent Mechanism
SummaryEukaryotic cells from fungal hyphae to neurites that grow by polarized extension must coordinate cell growth and cell orientation to enable them to exhibit growth tropisms and to respond to relevant environmental cues. Such cells generally maintain a tip-high Ca2+ cytoplasmic gradient, which is correlated with their ability to exhibit polarized tip growth and to respond to growth-directing extracellular signals [1â5]. In yeast and other fungi, the polarisome, exocyst, Arp2/3, and Spitzenkörper protein complexes collectively orchestrate tip growth and cell polarity, but it is not clear whether these molecular complexes also regulate cell orientation or whether they are influenced by cytoplasmic Ca2+ gradients. Hyphae of the human pathogenic fungus Candida albicans reorient their growth axis in response to underlying surface topography (thigmotropism) [6] and imposed electric fields (galvanotropism) [7]. The establishment and maintenance of directional growth in relation to these environmental cues was Ca2+ dependent. Tropisms were attenuated in media containing low Ca2+, or calcium-channel blockers, and in mutants where calcium channels or elements of the calcium signaling pathway were deleted. Therefore galvanotropism and thigmotropism may both be mediated by localized Ca2+ influx at sites of polarized growth via Ca2+ channels that are activated by appropriate environmental signals
Measurement of the Neutron Lifetime by Counting Trapped Protons
This research was sponsored by the National Science Foundation Grant NSF PHY-931478
Recommended from our members
Near-Earth asteroid sample return missions
The rate of discovery of new NEAs and the success of D-S 1 and NEAR-Shoemaker, suggest that sample return from NEAs is now technically feasible. Here we present a summary of a recent workshop on the topic
Influences on academics' approaches to development: voices from below
The purpose of this qualitative case study research was to explore faculty-based academicsâ views on what influences their behaviours and attitudes towards their development. Informed by critical realist ontology, the data collection was carried out through narrative interviews with academics in two contrasting English Universities. Findings, or areas for reflection, have emerged about the constraints and enablements academics perceive in respect of their professional development. In particular, themes such as the significance of professional status; misaligned initiatives and priorities; the influence of supportive networks; and emergent personal, individual concerns have surfaced. The conclusion is drawn that the significance of agency raises the importance of responding to the âvoices from belowâ
Measurement of the Neutron Lifetime by Counting Trapped Protons
This research was sponsored by the National Science Foundation Grant NSF PHY-931478
- âŠ