768 research outputs found
Non-Hausdorff Symmetries of C*-algebras
Symmetry groups or groupoids of C*-algebras associated to non-Hausdorff
spaces are often non-Hausdorff as well. We describe such symmetries using
crossed modules of groupoids. We define actions of crossed modules on
C*-algebras and crossed products for such actions, and justify these
definitions with some basic general results and examples.Comment: very minor changes. To appear in Math. An
Paraquat intoxication and associated pathological findings in three dogs in South Africa
Paraquat is a bipyridylium non-selective contact herbicide commonly used worldwide. When
ingestion occurs by humans and animals either accidentally, intentionally or maliciously,
paraquat selectively accumulates in the lungs resulting in the production of oxygen-free
radicals, causing membrane damage and cell death. Intoxicated subjects typically show
progressive and fatal pulmonary haemorrhage, collapse and oedema. In individuals surviving
the acute phase, pulmonary fibrosis develops. Gastrointestinal-, renal- and central nervous
system clinical signs may also occur. Owing to the lack of effective treatment and absence of an
antidote, the prognosis is poor. The clinical presentation, clinicopathological findings and
treatment are briefly described of three dogs from one South African household, intoxicated
with paraquat. Macroscopic and microscopic lesions in one dog that was necropsied, as well
as pulmonary ultrastructure are detailed and illustrated for academic reference. All dogs
presented with tachypnoea and dyspnoea 2â3 days after accidental paraquat ingestion.
Treatment was aimed at reducing gastrointestinal absorption, enhancing elimination by
diuresis and avoiding further oxidative damage by administration of antioxidants. All dogs,
however, became progressively hypoxic despite treatment and were euthanised. Paraquat
toxicity should be a differential diagnosis in dogs with unexplained progressive respiratory
and gastrointestinal signs and renal failure. The local veterinary profession should be aware of
accidental or intentional paraquat toxicity of animals. Existing literature, variations possible in
canine clinical signs, measured parameters, lesions, as well as possible treatments, promising
experimental antidotes and management options are discussed.http://www.jsava.co.zaam2016Animal and Wildlife SciencesParaclinical Science
Sedentary Behaviour in Young People: Prevalence and Determinants - Project STIL
Project STIL (Sedentary Teenagers and Inactive Lifestyles) addressed
three fundamental questions concerning sedentary behaviour in
adolescent boys and girls in the UK:
1. What is the prevalence of key sedentary behaviours in young
people?
2. What links exist between sedentary behaviours and other healthrelated
behaviours?
3. What are the main determinants of sedentary behaviour
Sedentary behaviour among Scottish youth: prevalence and determinants - Project STIL (Scotland)
A great deal of media coverage has been devoted to the issue of physical inactivity in children and young people. Do they watch too much TV and sit for too long at the computer? Does this mean that they do inadequate amounts of physical activity? These are key questions we do not have definite answers to. This project was established to investigate the amount and types of sedentary behaviour in Scottish adolescents and what factors are related to sedentary behaviour.
Concurrent with this project, we collected data for the UK, through Project STIL (âSedentary Teenagers and Inactive Lifestylesâ) but sampling estimates meant that only 4 schools in Scotland were assessed. There was a need, therefore, for a larger, more representative, Scottish sample for reliable estimates for the prevalence of sedentary behaviour. Additional funding was therefore offered in 2002 by the young Peopleâs Programme at NHS Health Scotland to increase the size of the Scottish sample to make it more representative.
Project STIL (Scotland) addressed two fundamental questions concerning sedentary behaviour outside school time in adolescent boys and girls in Scotland:
âąWhat is the prevalence of key sedentary behaviours in young people in Scotland?
âąWhat are the main determinants of sedentary behaviour
Unstimulated cortisol secretory activity in everyday life and its relationship with fatigue and chronic fatigue syndrome : a systematic review and subset meta-analysis
Copyright © 2013 The Authors. Published by Elsevier Ltd.. All rights reserved.Peer reviewedPublisher PD
Automated mapping of social networks in wild birds
Growing interest in the structure and dynamics of animal social networks has stimulated major advances [1], [2] and [3], but recording reliable association data for wild populations has remained challenging. While animal-borne âproximityâ tags have been available for some time [4], earlier devices were comparatively heavy, had limited detection ranges and/or necessitated recovery for data retrieval. We have developed wireless digital transceiver technology (âEncounternet') that enables automated mapping of social networks in wild birds, yielding datasets of unprecedented size, quality and spatio-temporal resolution. Miniature, animal-borne tags record the proximity and duration of bird encounters, and periodically transfer logs to a grid of fixed receiver stations, from which datasets can be downloaded remotely for real-time analysis. We used our system to chart social associations in New Caledonian crows Corvus moneduloides [5] and [6]. Analysis of ca. 28,000 encounter logs for 34 crows over a 7-day period reveals a substantial degree of close-range association between non-family birds, demonstrating the potential for horizontal and oblique information exchange
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Effect of blending Jersey and Holstein-Friesian milk on Cheddar cheese processing, composition and quality
The effect of Jersey milk use solely or at different inclusion rates in Holstein-Friesian milk on Cheddar cheese production was investigated. Cheese was produced every month over a year using nonstandardized milk consisting of 0, 25, 50, 75, and 100% Jersey milk in Holstein-Friesian milk in a 100-L vat. Actual, theoretical, and moisture-adjusted yield increased linearly with percentage of Jersey milk. This was also associated with increased fat and protein recoveries and lower yield of whey. The composition of whey was also affected by the percentage of Jersey milk, with lower whey protein and higher whey lactose and solids. Cutting time was lower when Jersey milk was used, but the cutting to milling time was higher because of slower acidity development. Hence, overall cheesemaking time was not affected by the use of Jersey milk. Using Jersey milk increased cheese fat content in autumn, winter, and spring and decreased cheese moisture in spring and summer. Cheese protein, salt, and pH levels were not affected. Cheese was analyzed for texture and color, and it was professionally graded at 3 and 8â
mo. The effect of Jersey on cheese sensory quality was an increase in cheese yellowness during summer and a higher total grading score at 3â
mo in winter; no other difference in cheese quality was found. The study indicates that using Jersey milk is a valid method of improving Cheddar cheese yield
Measurement of the branching fraction
The branching fraction is measured in a data sample
corresponding to 0.41 of integrated luminosity collected with the LHCb
detector at the LHC. This channel is sensitive to the penguin contributions
affecting the sin2 measurement from The
time-integrated branching fraction is measured to be . This is the most precise measurement to
date
Measurement of the CP-violating phase \phi s in Bs->J/\psi\pi+\pi- decays
Measurement of the mixing-induced CP-violating phase phi_s in Bs decays is of
prime importance in probing new physics. Here 7421 +/- 105 signal events from
the dominantly CP-odd final state J/\psi pi+ pi- are selected in 1/fb of pp
collision data collected at sqrt{s} = 7 TeV with the LHCb detector. A
time-dependent fit to the data yields a value of
phi_s=-0.019^{+0.173+0.004}_{-0.174-0.003} rad, consistent with the Standard
Model expectation. No evidence of direct CP violation is found.Comment: 15 pages, 10 figures; minor revisions on May 23, 201
Model-independent search for CP violation in D0âKâK+ÏâÏ+ and D0âÏâÏ+Ï+Ïâ decays
A search for CP violation in the phase-space structures of D0 and View the MathML source decays to the final states KâK+ÏâÏ+ and ÏâÏ+Ï+Ïâ is presented. The search is carried out with a data set corresponding to an integrated luminosity of 1.0 fbâ1 collected in 2011 by the LHCb experiment in pp collisions at a centre-of-mass energy of 7 TeV. For the KâK+ÏâÏ+ final state, the four-body phase space is divided into 32 bins, each bin with approximately 1800 decays. The p-value under the hypothesis of no CP violation is 9.1%, and in no bin is a CP asymmetry greater than 6.5% observed. The phase space of the ÏâÏ+Ï+Ïâ final state is partitioned into 128 bins, each bin with approximately 2500 decays. The p-value under the hypothesis of no CP violation is 41%, and in no bin is a CP asymmetry greater than 5.5% observed. All results are consistent with the hypothesis of no CP violation at the current sensitivity
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