Male and female mice show equal variability in food intake across 4-day spans that encompass estrous cycles.

The exclusion of female rodents from biomedical research is well documented and persists in large part due to perceptions that ovulatory cycles render female traits more variable than those of males, and females must be tested at each of four stages of the estrous cycle to generate reliable data. These beliefs are not empirically based. The magnitude of trait variance associated with the estrous cycle may be sufficiently low and of little impact, or trait variability of males tested on 4 consecutive days may be as great as that of females over the 4 days of the estrous cycle. Here, we analyzed food intake data from mice in 4-day blocks, corresponding to the females 4-day estrous cycle in several schedules of food procurement or reward. Variance was compared within and across individual mice. In no instance did the overall variance differ by sex under any of the food reward schedules. This extends earlier observations of trait variability in body temperature and locomotor activity of mice and supports the claim that there is no empirical basis for excluding female rodents from biomedical research

Wintertime losses of ozone in high northern latitudes

Total column ozone data over the past 22 to 30 years from ground-based Dobson and filter ozonometer stations between 30 N and 80 N are analyzed for residual trends remaining after allowance for the known geophysical variations corresponding to: (1) the change of seasons; (2) the quasi-biennial oscillation; and (3) the 11-year solar sunspot cycle. Examination of the data from several ground stations between 45 and 55 N indicated a seasonal difference in the long-term ozone series, with statistically significant losses in several winter months. Accordingly, the data from individual stations were analyzed with multiple regression analysis, seeking trends on a monthly basis after allowance for the known geophysical cycles. Previous statistical analyses were conducted as tests of 1-D model calculations which do not show any differences with the seasons, and any trend toward change in ozone concentrations is expressed in a yearly trend without seasonal variation. Such a model is inappropriate for calculations with a data set which exhibits a pronounced tendency toward seasonal differences in the trends. Comparisons with model calculations then require 2-D models into which seasonal and latitudinal differences can easily be programmed

Finding their feet : lecturers’ and students’ perceptions of English as a medium of instruction in a recently-implemented Master's programme at an Italian university

This article reports on a small-scale qualitative study designed to explore lecturers’ and students’ experiences of teaching and learning on a recently-implemented MSc programme in Biomedical Sciences taught in the medium of English at an Italian university. A focus group format was employed to interview twelve students on the programme, and individual interviews were conducted with six lecturers. Participants’ views were elicited concerning the language proficiency of both students and lecturers, the strategies adopted to meet any challenges associated with weak language skills where these were thought to exist, and the perceived impact of EMI on assessment and the quality of course content. Findings indicate that despite quite lenient language entry requirements, students felt able to cope with the demands of the programme and felt positively disposed towards it and the benefits it afforded, despite at times placing extra demands on them. Lecturers similarly felt positive about the experience both in terms of the students’ and their own development. There is evidence that flexible attitudes towards the use of students’ L1, and the strategies lecturers adopted in their efforts to accommodate to students, were important determinants of these attitudes and the generally positive experience widely reported

The Welfare of Traveller and Gypsy Owned Horses in the UK and Ireland

SIMPLE SUMMARY: Travellers and Gypsies are recognised ethnic groups in the UK and Ireland. Horse ownership is an important part of their lives; however, poor horse welfare is often perceived to be associated with these horse-owning communities. Nevertheless, studies on the welfare of Traveller and Gypsy-owned horses are lacking. The welfare of 104 horses in the UK and Ireland was evaluated using a horse welfare protocol that assessed health conditions, resource provision, management and horse behaviour. In order to potentially understand how a horse was feeling, Qualitative Behaviour Assessment (QBA) was used to evaluate their body language. Most horses were found to have good body condition, a healthy coat and few skin problems or joint issues, however, 27% of horses were found to have neglected hooves. In the voluntary animal approach test, most horses showed a friendly response. Positive QBA terms were more prevalent than negative terms, therefore, the emotional state of Traveller and Gypsy owned horses was deemed to be positive overall. An association between QBA and various horse welfare measures was identified, e.g., improved mood was associated with better water availability. Findings in this study did not support previous negative perceptions of horse welfare in Traveller and Gypsy horse owning communities. ABSTRACT: Travellers and Gypsies are recognised ethnic groups in the UK and Ireland. Horse ownership is an important cultural tradition, however, practices associated with poor welfare are often perceived to be linked to these horse owning communities. Despite this, empirical studies on the welfare status of Traveller and Gypsy owned horses are lacking. To determine the welfare status of Traveller and Gypsy owned horses, 104 horses were assessed using a bespoke horse welfare protocol. This protocol assessed animal, resource and management-based measures. In addition, Qualitative Behaviour Assessment (QBA) identified horses’ emotional state. Results indicated that 81% of horses had an optimal body condition score, with no horse recorded as very thin/fat. The absence of limb conditions (95%), ocular (98%) and nasal (93%) discharges were evident in most horses, and 81% of horses responded positively to the voluntary animal approach test. The most commonly observed welfare issues were hoof neglect (27%), with hoof cracks/breakages (19%) being the most prevalent. QBA indicated that positive emotional states were more commonplace than negative. A relationship between QBA and other horse welfare measures was observed, e.g., improved mood was associated with better water availability. This research provides novel data in the under-researched area of the welfare of Traveller and Gypsy owned horses and counters perceptions of a poor welfare state in this group of horses

Effects of Yohimbine and Tolazoline on Isoproterenol and Angiotensin 2-Induced Water Intake in Rats

Subcutaneous administration of the alpha(sub 2)-adrenoreceptor antagonists, yohimbine and tolazoline, at doses up to 1000 micro-g/kg, had no effect on water intake of female rats. However, when these compounds were administered SC in combination with either the beta-adrenoreceptor agonist, isoproterenol (10 to 25 micro-g/kg, SC), or with angiotensin 2 (200 micro-g/kg, SC). water intake was enhanced. In contrast, intraventricular administration of either tolazoline (10 and 20 micro-g/kg) or yohimbine (300 micro-g/kg) failed to augment the dipsogenic response to angiotensin 2 (150 micro-g/kg, SC). Thus, the enhancing effect of these alpha(sub 2)-adrenoreceptor antagonists on isoproterenol- and angiotensin 2-induced water intakes appears to be manifested peripherally, rather than centrally. In view of the fact that clonidine, an alpha(sub 2)-adrenoreceptor agonist, has been shown to inhibit water intake induced by both isoproterenol and angiotensin 2, the results suggest that the alpha(sub 2)-adrenoreceptor may play a role in modulating water intake induced by these two dipsogenic agents

An Economic Evaluation of Preclinical Testing Strategies Compared to the Compulsory Scrapie Flock Scheme in the Control of Classical Scrapie

Cost-benefit is rarely combined with nonlinear dynamic models when evaluating control options for infectious diseases. The current strategy for scrapie in Great Britain requires that all genetically susceptible livestock in affected flocks be culled (Compulsory Scrapie Flock Scheme or CSFS). However, this results in the removal of many healthy sheep, and a recently developed pre-clinical test for scrapie now offers a strategy based on disease detection. We explore the flock level cost-effectiveness of scrapie control using a deterministic transmission model and industry estimates of costs associated with genotype testing, pre-clinical tests and the value of a sheep culled. Benefit was measured in terms of the reduction in the number of infected sheep sold on, compared to a baseline strategy of doing nothing, using Incremental Cost Effectiveness analysis to compare across strategies. As market data was not available for pre-clinical testing, a threshold analysis was used to set a unit-cost giving equal costs for CSFS and multiple pre-clinical testing (MT, one test each year for three consecutive years). Assuming a 40% within-flock proportion of susceptible genotypes and a test sensitivity of 90%, a single test (ST) was cheaper but less effective than either the CSFS or MT strategies (30 infected-sales-averted over the lifetime of the average epidemic). The MT strategy was slightly less effective than the CSFS and would be a dominated strategy unless preclinical testing was cheaper than the threshold price of £6.28, but may be appropriate for flocks with particularly valuable livestock. Though the ST is not currently recommended, the proportion of susceptible genotypes in the national flock is likely to continue to decrease; this may eventually make it a cost-effective alternative to the MT or CSFS

Resilience and the (Micro-)Dynamics of Organizational Ambidexterity: Implications for Strategic HRM

In the twenty-first century, resilience has emerged as an important topic linked to calls for adaptability, well-being and organizational performance. Extant strategic human resource management (HRM) literature and practices have developed many insights into resilience. However, overall, they have a propensity to conceptualise resilience as being associated with ‘macro-’ and ‘extreme’ situations. This paper complements the prevailing perspective by developing a micro-focus on resilience through the conceptual framework of organizational ambidexterity surfacing under-examined individual resilience in connection with HRM practices. Methodologically, the paper adopts a qualitative approach presenting data from two illustrative contexts: an ‘everyday’ quasi-governmental institution and a prima facie ‘extreme’ pan-international military organization. Using template analysis, a number of valuable themes and similarities are identified. The findings and discussion underline the managerial challenges in handling organizational ambidextrous dynamics and tensions surrounding resilience, positive and sceptical approaches in relation to individual and organizational stances towards HRM practices. As such, the results point at value in HRM managers and practices recontextualising and appreciating ‘extremes’ and resilience more as an everyday (rather than exceptional) phenomenon wherein myriad micro-moments are highly significant in constructing and influencing macro-contexts. This also implies a need to see cynical resistance as normative rather than automatically negatively

MR diffusion changes in the perimeter of the lateral ventricles demonstrate periventricular injury in post-hemorrhagic hydrocephalus of prematurity

OBJECTIVES: Injury to the preterm lateral ventricular perimeter (LVP), which contains the neural stem cells responsible for brain development, may contribute to the neurological sequelae of intraventricular hemorrhage (IVH) and post-hemorrhagic hydrocephalus of prematurity (PHH). This study utilizes diffusion MRI (dMRI) to characterize the microstructural effects of IVH/PHH on the LVP and segmented frontal-occipital horn perimeters (FOHP). STUDY DESIGN: Prospective study of 56 full-term infants, 72 very preterm infants without brain injury (VPT), 17 VPT infants with high-grade IVH without hydrocephalus (HG-IVH), and 13 VPT infants with PHH who underwent dMRI at term equivalent. LVP and FOHP dMRI measures and ventricular size-dMRI correlations were assessed. RESULTS: In the LVP, PHH had consistently lower FA and higher MD and RD than FT and VPT (p\u3c.050). However, while PHH FA was lower, and PHH RD was higher than their respective HG-IVH measures (p\u3c.050), the MD and AD values did not differ. In the FOHP, PHH infants had lower FA and higher RD than FT and VPT (p\u3c.010), and a lower FA than the HG-IVH group (p\u3c.001). While the magnitude of AD in both the LVP and FOHP were consistently less in the PHH group on pairwise comparisons to the other groups, the differences were not significant (p\u3e.050). Ventricular size correlated negatively with FA, and positively with MD and RD (p\u3c.001) in both the LVP and FOHP. In the PHH group, FA was lower in the FOHP than in the LVP, which was contrary to the observed findings in the healthy infants (p\u3c.001). Nevertheless, there were no regional differences in AD, MD, and RD in the PHH group. CONCLUSION: HG-IVH and PHH results in aberrant LVP/FOHP microstructure, with prominent abnormalities among the PHH group, most notably in the FOHP. Larger ventricular size was associated with greater magnitude of abnormality. LVP/FOHP dMRI measures may provide valuable biomarkers for future studies directed at improving the management and neurological outcomes of IVH/PHH