Molecular and morphological characterization of the tapeworm Taenia hydatigena (Pallas, 1766) in sheep from Iran

Although Taenia hydatigena is one of the most prevalent taeniid species of livestock, very little molecular genetic information exists for this parasite. Up to 100 sheep isolates of T. hydatigena were collected from 19 abattoirs located in the provinces of Tehran, Alborz and Kerman. A calibrated microscope was used to measure the larval rostellar hook lengths. Following DNA extraction, fragments of cytochrome c oxidase 1 (CO1) and 12S rRNA genes were amplified by the polymerase chain reaction method and the amplicons were subjected to sequencing. The mean total length of large and small hooks was 203.4 μm and 135.9 μm, respectively. Forty CO1 and 39 12S rRNA sequence haplotypes were obtained in the study. The levels of pairwise nucleotide variation between individual haplotypes of CO1 and 12S rRNA genes were determined to be between 0.3-3.4% and 0.2-2.1%, respectively. The overall nucleotide variation among all the CO1 haplotypes was 9.7%, and for all the 12S rRNA haplotypes it was 10.1%. A significant difference was observed between rostellar hook morphometry and both CO1 and 12S rRNA sequence variability. A significantly high level of genetic variation was observed in the present study. The results showed that the 12S rRNA gene is more variable than CO1. © 2013 Cambridge University Press

Effective risk management planning for those convicted of sexual offending

Purpose – The purpose of this paper is to examine the extent to which risk is addressed in the risk management planning process of those convicted of sexual offending. Design/methodology/approach – Data were collected from a risk assessment and management system called the Offender Assessment System (OASys), used by the National Offender Management Service, in England and Wales. The records of 216 clients were accessed and each risk management plan analysed. The study aimed to understand if first, general and sexual risk factors identified by assessors were recorded and detailed in subsequent plans; second, if specialist sexual offending risk assessment tools were used to inform risk management strategies; and third, if both a balance of control and support mechanisms were in place to tackle identified risk and needs of clients. Findings – Inconsistencies were found in relation to practitioners transposing risks identified, into the subsequent risk management plans. Strategies were therefore deemed, inadequate as there was a significant omission of the use of specialist sexual risk assessment tools to inform and ensure risk assessment to be robust. In addition risk management plans were often overbearing in nature, as assessors tended to utilise control strategies to assist the reintegration process, in contrast to a combination of both control and support. Research limitations/implications – This sample was taken from only one probation trust in England and Wales. The findings might therefore be unique to this organisation rather than be representative of national practice. This study should therefore, be replicated in a number of other probation areas. In addition, it is important to note that this study only reviewed one electronic tool used by practitioners. Therefore, while it might appear for example that the RM2000 tool was not routinely completed; this cannot be assumed as practitioners might have adopted local custom and practice, recording RM2000 scores elsewhere. Practical implications – These findings highlight the need for some understanding as to why there is a lack of consistency throughout the risk management planning process. Practitioners should receive ongoing risk management training, development and supportive supervision. In particular, practitioners require supervision that supports and develops their skills when applying RM2000 classifications to their clients’ risk management plans. Likewise initiatives which develop practitioner’s awareness and application of strengths based approaches such as the Good Lives Model should be encouraged. These will help practitioners develop plans that address both the risks while supporting their development of the strengths a client presents. Originality/value – To the authors’ knowledge, this is the first study of its kind, which examines the risk management plans of those convicted of sexual offending, completed by practitioners in England and Wales using the OASys tool

Microfluidics-based approaches to the isolation of African trypanosomes

African trypanosomes are responsible for significant levels of disease in both humans and animals. The protozoan parasites are free-living flagellates, usually transmitted by arthropod vectors, including the tsetse fly. In the mammalian host they live in the bloodstream and, in the case of human-infectious species, later invade the central nervous system. Diagnosis of the disease requires the positive identification of parasites in the bloodstream. This can be particularly challenging where parasite numbers are low, as is often the case in peripheral blood. Enriching parasites from body fluids is an important part of the diagnostic pathway. As more is learned about the physicochemical properties of trypanosomes, this information can be exploited through use of different microfluidic-based approaches to isolate the parasites from blood or other fluids. Here, we discuss recent advances in the use of microfluidics to separate trypanosomes from blood and to isolate single trypanosomes for analyses including drug screening

Foresight and action learning supporting transition: An account of practice

Integrating foresight into corporations has proved to be challenging. This account of practice reports on the introduction of futures and foresight (FF) teaching content into an executive Masters programme. The FF contentwas further linked to and provided a background for action learning sets. The purpose was to identify how introducing distant time horizons would help participants to adapt and change their perspectives in problem solving and professional development. The report describes how FF was incorporated across the programme and used to develop insightful conversations in the action learning sets. Citing two case examples, the authors reflect on how participants responded to these new elements and offer insights into the value of introducing FF as an interdisciplinary element in a programme

On the Selection of Photometric Planetary Transits

We present a new method for differentiating between planetary transits and eclipsing binaries based on the presence of the ellipsoidal light variations. These variations can be used to detect stellar secondaries with masses ~0.2 M_sun orbiting sun-like stars at a photometric accuracy level which has already been achieved in transit surveys. By removing candidates exhibiting this effect it is possible to greatly reduce the number of objects requiring spectroscopic follow up with large telescopes. Unlike the usual candidate selection method, which are primarily based on the estimated radius of the orbiting object, this technique is not biased against bona-fide planets and brown dwarfs with large radii, because the amplitude of the effect depends on the transiting object's mass and orbital distance. In many binary systems, where a candidate planetary transit is actually due to the partial eclipse of two normal stars, the presence of flux variations due to the gravity darkening effect will show the true nature of these systems. We show that many of the recent OGLE-III photometric transit candidates exhibit the presence of significant variations in their light curves and are likely to be due to stellar secondaries. We find that the light curves of white dwarf transits will generally not mimic those of small planets because of significant gravitationally induced flux variations. We discuss the relative merits of methods used to detect transit candidates which are due to stellar blends rather than planets. We outline how photometric observations taken in two bands can be used to detect the presence of stellar blends.Comment: ApJ, 11 pages, 2 figures, 1 table, replaced with accepted versio

Pre-Existing Superbubbles as the Sites of Gamma-Ray Bursts

According to recent models, gamma-ray bursts apparently explode in a wide variety of ambient densities ranging from ~ 10^{-3} to 30 cm^{-3}. The lowest density environments seem, at first sight, to be incompatible with bursts in or near molecular clouds or with dense stellar winds and hence with the association of gamma-ray bursts with massive stars. We argue that low ambient density regions naturally exist in areas of active star formation as the interiors of superbubbles. The evolution of the interior bubble density as a function of time for different assumptions about the evaporative or hydrodynamical mass loading of the bubble interior is discussed. We present a number of reasons why there should exist a large range of inferred afterglow ambient densities whether gamma-ray bursts arise in massive stars or some version of compact star coalescence. We predict that many gamma-ray bursts will be identified with X-ray bright regions of galaxies, corresponding to superbubbles, rather than with blue localized regions of star formation. Massive star progenitors are expected to have their own circumstellar winds. The lack of evidence for individual stellar winds associated with the progenitor stars for the cases with afterglows in especially low density environments may imply low wind densities and hence low mass loss rates combined with high velocities. If gamma-ray bursts are associated with massive stars, this combination might be expected for compact progenitors with atmospheres dominated by carbon, oxygen or heavier elements, that is, progenitors resembling Type Ic supernovae.Comment: 14 pages, no figures, submitted to The Astrophysical Journa

Electromagnetic interferences from plasmas generated in meteoroids impacts

It is shown that the plasma, generated during an impact of a meteoroid with an artificial satellite, can produce electromagnetic radiation below the microwave frequency range. This interference is shown to exceed local noise sources and might disturb regular satellite operations.Comment: 6 pages, no figures. This version macthes the published versio

Teacher Fellow Accreditation – A madrigal of voices! But is it the right tune? Tensions of standardisation, engagement and neoliberalism

Purpose The purpose of this paper is to explore the impact competency frameworks as standardisation can have on the employee engagement of academic staff within higher education (HE) through their employment as managerial tools. Design/methodology/approach A literature review is conducted from which the conditions for effective competency frameworks are evaluated and the influence of changes in the HE environment in the form of political agendas and tight resources are explored. Findings This paper provides insights into the dynamics of public service modernisation and the tensions between the dominant discourse of managerialism and the degree of agency afforded to professional academics. It highlights the relevance of informal peer relationships in setting the climate to generate collegial bonding and professional engagement that underpin successful teacher fellowship accreditations. It further highlights the key role managers play in this process and provides a conceptual framework highlighting the dynamics and combined effect of employee engagement and competency frameworks set within complex HE environment. Practical implications This paper brings together the prerequisites for effective implementation of competency frameworks to implement successful employee engagement strategies set within the complexities of the HE context, which has not been studied to date. Armed with such insights, Human Resource Development (HRD) departments and universities can implement competency assessments that generate greater staff engagement. Originality/value The paper provides a critical approach in reviewing the impact of Continued Professional Development and its link to professional status and thus helps British Universities and others to understand how the mechanisms at work affect engagement levels of academic staff. Armed with this depth of understanding of how the change initiative works, with whom and under what circumstances, universities will be better able to meet target UK Professional Standards Framework membership levels required by the higher education academy (HEA) and, subsequently, the HEA to meet their targets for the government