122 research outputs found

    The use of antilibidinal medications in the treatment of sexual offenders

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    Antilibidinal medications can be used to reduce a sexual offender’s deviant sexual fantasies and arousal. We briefly review what these medications are and what effects they have, how commonly they are used or should be used, how effective they actually are, and finally in our clinical opinion which sex offenders would benefit from the taking these medications. We also raise briefly some of the ethical, legal, and medical implications of their use

    Population genetic structure of serotine bats (Eptesicus serotinus) across Europe and implications for the potential spread of bat rabies (European bat lyssavirus EBLV-1)

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    This is the author accepted manuscript. The final version is available from the publisher via the DOI in this record.Understanding of the movements of species at multiple scales is essential to appreciate patterns of population connectivity and in some cases, the potential for pathogen transmission. The serotine bat (Eptesicus serotinus) is a common and widely distributed species in Europe where it frequently harbours European bat lyssavirus type 1 (EBLV-1), a virus causing rabies and transmissible to humans. In the United Kingdom, it is rare, with a distribution restricted to south of the country and so far the virus has never been found there. We investigated the genetic structure and gene flow of E. serotinus across the England and continental Europe. Greater genetic structuring was found in England compared with continental Europe. Nuclear data suggest a single population on the continent, although further work with more intensive sampling is required to confirm this, while mitochondrial sequences indicate an east-west substructure. In contrast, three distinct populations were found in England using microsatellite markers, and mitochondrial diversity was very low. Evidence of nuclear admixture indicated strong male-mediated gene flow among populations. Differences in connectivity could contribute to the high viral prevalence on the continent in contrast with the United Kingdom. Although the English Channel was previously thought to restrict gene flow, our data indicate relatively frequent movement from the continent to England highlighting the potential for movement of EBLV-1 into the United Kingdom.We acknowledge DEFRA and University of Exeter for funding this stud

    Solution generating with perfect fluids

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    We apply a technique, due to Stephani, for generating solutions of the Einstein-perfect fluid equations. This technique is similar to the vacuum solution generating techniques of Ehlers, Harrison, Geroch and others. We start with a ``seed'' solution of the Einstein-perfect fluid equations with a Killing vector. The seed solution must either have (i) a spacelike Killing vector and equation of state P=rho or (ii) a timelike Killing vector and equation of state rho+3P=0. The new solution generated by this technique then has the same Killing vector and the same equation of state. We choose several simple seed solutions with these equations of state and where the Killing vector has no twist. The new solutions are twisting versions of the seed solutions

    Phylogeography of the Patagonian otter Lontra provocax: adaptive divergence to marine habitat or signature of southern glacial refugia?

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    <p>Abstract</p> <p>Background</p> <p>A number of studies have described the extension of ice cover in western Patagonia during the Last Glacial Maximum, providing evidence of a complete cover of terrestrial habitat from 41°S to 56°S and two main refugia, one in south-eastern Tierra del Fuego and the other north of the Chiloé Island. However, recent evidence of high genetic diversity in Patagonian river species suggests the existence of aquatic refugia in this region. Here, we further test this hypothesis based on phylogeographic inferences from a semi-aquatic species that is a top predator of river and marine fauna, the huillín or Southern river otter (<it>Lontra provocax</it>).</p> <p>Results</p> <p>We examined mtDNA sequences of the control region, ND5 and Cytochrome-b (2151 bp in total) in 75 samples of <it>L. provocax </it>from 21 locations in river and marine habitats. Phylogenetic analysis illustrates two main divergent clades for <it>L. provocax </it>in continental freshwater habitat. A highly diverse clade was represented by haplotypes from the marine habitat of the Southern Fjords and Channels (SFC) region (43°38' to 53°08'S), whereas only one of these haplotypes was paraphyletic and associated with northern river haplotypes.</p> <p>Conclusions</p> <p>Our data support the hypothesis of the persistence of <it>L. provocax </it>in western Patagonia, south of the ice sheet limit, during last glacial maximum (41°S latitude). This limit also corresponds to a strong environmental change, which might have spurred <it>L. provocax </it>differentiation between the two environments.</p

    Comparison of Marine Spatial Planning Methods in Madagascar Demonstrates Value of Alternative Approaches

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    The Government of Madagascar plans to increase marine protected area coverage by over one million hectares. To assist this process, we compare four methods for marine spatial planning of Madagascar's west coast. Input data for each method was drawn from the same variables: fishing pressure, exposure to climate change, and biodiversity (habitats, species distributions, biological richness, and biodiversity value). The first method compares visual color classifications of primary variables, the second uses binary combinations of these variables to produce a categorical classification of management actions, the third is a target-based optimization using Marxan, and the fourth is conservation ranking with Zonation. We present results from each method, and compare the latter three approaches for spatial coverage, biodiversity representation, fishing cost and persistence probability. All results included large areas in the north, central, and southern parts of western Madagascar. Achieving 30% representation targets with Marxan required twice the fish catch loss than the categorical method. The categorical classification and Zonation do not consider targets for conservation features. However, when we reduced Marxan targets to 16.3%, matching the representation level of the “strict protection” class of the categorical result, the methods show similar catch losses. The management category portfolio has complete coverage, and presents several management recommendations including strict protection. Zonation produces rapid conservation rankings across large, diverse datasets. Marxan is useful for identifying strict protected areas that meet representation targets, and minimize exposure probabilities for conservation features at low economic cost. We show that methods based on Zonation and a simple combination of variables can produce results comparable to Marxan for species representation and catch losses, demonstrating the value of comparing alternative approaches during initial stages of the planning process. Choosing an appropriate approach ultimately depends on scientific and political factors including representation targets, likelihood of adoption, and persistence goals

    Clinical guidelines for acute stroke management: Which recommendations should remain consensus-based?

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    Although guideline recommendations should be based on the highest levels of evidence available, it may be appropriate for some recommendations to remain consensus-based. This study investigated stroke clinicians&#039; and academics&#039; opinions about which consensus-based recommendations from the Australian National Stroke Foundation Clinical Guidelines for Acute Stroke Management (2007) should remain as such, using a self-administered questionnaire. In the study, 43 people participated (62% response rate). Of the 50 recommendations presented, at least half the participants believed that 35 (70%) of these should remain consensus-based. In an adjusted multivariable analysis, recommendations perceived to be “highly likely” or “likely” to have an impact on patient outcomes were less likely to be perceived by respondents as appropriate to remain consensus-based (OR = 0.16 [95% CI 0.13–0.19], P &lt; .001). Further, although females were less likely to state that recommendations should remain consensus-based (OR = 0.26 for female gender, [95% CI 0.08–0.88], P = .031), those with higher level of educational qualifications (OR = 1.45 per an incremental unit increase in education level [95% CI 1.04–2.03], P = .028) and those from nursing and medicine disciplines in comparison with allied health (OR = 25.2 for medical, nursing, and “other” disciplines in comparison with allied health [95% CI 1.54–413.1], P = .024) were more likely to state that a recommendations should remain consensus-based. The results indicated there was agreement that it may be appropriate that a proportion of recommendations in clinical guidelines remain consensus-based. Assessing the views of what areas require more robust research evidence according to academic and clinical experts may allow for prioritization and optimal allocation of scarce research resources
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