1,977 research outputs found
Megaliths, monuments and materiality
No full textStones, and especially the arrangement of large stones in relation to one another, have long been the focus of attention in megalith studies, a concern reflected in the name itself. It is, however, a blinkered view. Many so-called megalithic monuments embody other carefully selected materials in their construction, including turf, soil, rubble, and timber. In considering long barrows, Paul Ashbee noted that it was a false distinction to separate earthen long barrows from stone-chambered long barrows as the builders of long barrows inevitably used materials available within their local environments. Alternatively, writing mainly about the Irish material, Arthur ApSimon suggested a development from timber to stone implying an onological progression in the preferred use of materials. Whether environmental or evolutionary, it is certain that many monuments interchangeably combine stone and wood in their construction in a way that forces us to consider what these and other materials meant to the megalith builders. Was it simply about what was available? Or what was fashionable? Or were there deeper sets of meanings relating to how different materials were perceived and understood within the cosmological systems that lie behind the design, construction,and use of long barrows, passage graves, dolmens and other related monuments? Focusing upon wood and stone, it is argued here that both were components of a cyclical world view of life and death that was embedded in the fabric and structure of monuments
Use of electromyography to detect muscle exhaustion in finishing barrows fed ractopamine HCl
No full textCitation: Noel, J. A., Broxterman, R. M., McCoy, G. M., Craig, J. C., Phelps, K. J., Burnett, D. D., . . . Gonzalez, J. M. (2016). Use of electromyography to detect muscle exhaustion in finishing barrows fed ractopamine HCl. Journal of Animal Science, 94(6), 2344-2356. doi:10.2527/jas2016-0398The objectives of this study were to determine the effects of dietary ractopamine HCl (RAC) on muscle fiber characteristics and electromyography (EMG) measures of finishing barrow exhaustion when barrows were subjected to increased levels of activity. Barrows (n = 34; 92 +/- 2 kg initial BW) were assigned to 1 of 2 treatments: a conventional swine finishing diet containing 0 mg/kg ractopamine HCl (CON) or a diet formulated to meet the requirements of finishing barrows fed 10 mg/kg RAC (RAC+). After 32 d on feed, barrows were individually moved around a track at 0.79 m/s until subjectively exhausted. Wireless EMG sensors were affixed to the deltoideus (DT), triceps brachii lateral head (TLH), tensor fasciae latae (TFL), and semitendinosus (ST) muscles to measure median power frequency (MdPF) and root mean square (RMS) as indicators of action potential conduction velocity and muscle fiber recruitment, respectively. After harvest, samples of each muscle were collected for fiber type, succinate dehydrogenase (SDH), and capillary density analysis. Speed was not different (P = 0.82) between treatments, but RAC+ barrows reached subjective exhaustion earlier and covered less distance than CON barrows (P 0.29). There was a treatment x muscle interaction (P = 0.04) for end-point RMS values. The RAC diet did not change end-point RMS values in the DT or TLH (P > 0.37); however, the diet tended to decrease and increase end-point RMS in the ST and TFL, respectively (P 0.10). Muscles of RAC+ barrows tended to have less type I fibers and more capillaries per fiber (P < 0.07). Type I and IIA fibers of RAC+ barrows were larger (P < 0.07). Compared with all other muscles, the ST had more (P < 0.01) type IIB fibers and larger type I, IIA, and IIX fibers (P < 0.01). Type I, IIA, and IIX fibers of the ST also contained less SDH compared with the other muscles (P < 0.01). Barrows fed a RAC diet had increased time to subjective exhaustion due to loss of active muscle fibers in the ST, possibly due to fibers being larger and less oxidative in metabolism. Size increases in type I and IIA fibers with no change in oxidative capacity could also contribute to early exhaustion of RAC+ barrows. Overall, EMG technology can measure real-time muscle fiber loss to help explain subjective exhaustion in barrows
Cosmogenic exposure dating constraints for coastal landslide evolution on the Island of Malta (Mediterranean Sea)
No full textLandslides affecting the north-western coast of the Island of Malta have been investigated and monitored for 10 years. As a result of a bathymetric survey, it was discovered the deposits continued out onto the seafloor, thus raising questions as to the timing of their development. Furthermore it was uncertain as to which environment they developed in and which factors controlled their movements. The aim of this paper is to investigate representative detachments to chronologically constrain these mass movement events and outline their spatial and temporal evolution. Samples for exposure dating using the cosmogenic nuclide 36Cl were collected from head scarps and blocks located within two long-term monitored landslides characterised by extensive block slides. The results indicate the oldest dated block detachment occurring in a subaerial environment at ca. 21 ka, when the sea level was about 130 m lower than at present. Mass movement possibly accelerated when sea level reached the landslide toe during the post-glacial marine transgression. Considering the timing of block movement, the landslide deposits observed today appear to be related to a first-time failure involving a large part of the slope, though and alternative hypothesis is also taken here into account. This main event is likely to have been followed by secondary movements influenced by toe undercutting and clay saturation due to rising sea level. However, further research on mass movement kinematics is required in order to model their evolution and explore whether this interpretation is widely applicable along the Maltese coast
Selected Contributions of Sister Mary Berenice Beck, O.S.F. to Nursing in the United States, 1923-1956
No full textby Sister M. Timothy Costello.Typescript.Thesis (M.S.N.)--Catholic University of America.Bibliography: leaves 44-47.Also available in microfilm
ASO Author Reflections: Re-resection of Positive Bile Duct Margin for Hilar Cholangiocarcinoma
No full textAuthor Reflections: Re-resection of Positive Bile Duct Margin for Hilar Cholangiocarcinom
t-pollington/developments_tau_statistic: First release
No full textCode release archived on Zenodo from the following paper:
@ARTICLE{Pollington2021, author={Pollington, T.M. and Tildesley, M.J. and Hollingsworth, T.D. and Chapman, L.A.C.},
volume = {42},
pages = {100438},
year = {2021},
note = {Towards Spatial Data Science},
issn = {2211-6753},
title={{Developments in statistical inference when assessing spatiotemporal disease clustering with the tau statistic}},
journal={Spatial Statistics},
doi={10.1016/j.spasta.2020.100438},
url = {https://www.sciencedirect.com/science/article/pii/S2211675320300324},
keywords = {Second order dependence, Pointwise confidence interval, Bias corrected accelerated BCa, Percentile confidence interval, Spatial bootstrap, Graphical hypothesis test} }Please contact Timothy M Pollington as corresponding author on [email protected] for any assistance.
TMP, LACC & TDH gratefully acknowledge funding of the NTD Modelling Consortium by the Bill &
Melinda Gates Foundation (BMGF) (grant number OPP1184344) and LACC acknowledges funding of
the SPEAK India consortium by BMGF (grant number OPP1183986). Views, opinions, assumptions
or any other information set out in this article should not be attributed to BMGF or any person
connected with them. TMP's PhD is supported by the Engineering & Physical Sciences Research
Council, Medical Research Council and University of Warwick (grant number EP/L015374/1). TMP
thanks Big Data Institute for hosting him during this work
WIGGOLD: The archaeology of a 'lofty open country'. Project Design: Phase 1 (2007)
No full textWIGGOLD: The archaeology of a lofty open country is a research project jointly conceived and run by Bournemouth University School of Conservation Sciences,Cotswold Archaeology,and Abbey Home Farm (Cirencester) to promote a greater understanding of the ancient past and facilitate access to it for education and enjoyment
A web-based screening tool for near-port air quality assessments
No full textAuthor(s): Isakov, Vlad; Barzyk, Timothy M; Smith, Elizabeth R; Arunachalam, Saravanan; Naess, Brian; Venkatram, Akul
Increasing Distributed Generation Penetration using Soft Normally-Open Points
No full textThis paper considers the effects of various voltage control solutions on facilitating an increase in allowable levels of distributed generation installation before voltage violations occur. In particular, the voltage control solution that is focused on is the implementation of `soft' normally-open points (SNOPs), a term which refers to power electronic devices installed in place of a normally-open point in a medium-voltage distribution network which allows for control of real and reactive power flows between each end point of its installation sites. While other benefits of SNOP installation are discussed, the intent of this paper is to determine whether SNOPs are a viable alternative to other voltage control strategies for this particular application. As such, the SNOPs ability to affect the voltage profile along feeders within a distribution system is focused on with other voltage control options used for comparative purposes. Results from studies on multiple network models with varying topologies are presented and a case study which considers economic benefits of increasing feasible DG penetration is also given
Evidence from North Carolina Shows that Immigrant Students with Limited English Have a Very Minor Impact on Native Students' Performance
No full textMuch of the recent concern about undocumented immigration into the U.S. can be linked to the perceived burden that these immigrants may create on the public education system. But is this really the case? Through analyzing detailed information on the performance of students in North Carolina,Timothy M. Diette and Ruth Uwaifo Oyelere find that the presence of students with limited English does have a negative, though small, effect on the math and reading achievement of natives that are male and black. They argue, however, that these effects are so small as not to warrant policy interventions. KEYWORDS: Education, English Language, Immigrants, Impact, Bilingual, Multilingual, and Multicultural Education, Educatio
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