Nematode control in 'green' ruminant production systems

Collectively, nematode parasites of domestic ruminants continue to pose the greatest disease problem in grazing livestock systems worldwide, despite the powerful and extensive chemotherapeutic arsenal available for their control. The widespread development of anthelmintic resistance, particularly in nematode parasites of small ruminants, and the trend towards nonchemical (ecological, organic, green) farming of livestock has provided an impetus for the research and development of alternative parasite control methods. This article provides a brief overview of the non-chemotherapeutic options for parasite control and how they might play a role either in organic farming or in other low-input farming systems

ASTM Committee D20 on Plastics Liaison Report

A viewgraph presentation describing plastic activities from committee D-20 is shown

Attitudes to self-sampling for HPV among Indian, Pakistani, African-Caribbean and white British women in Manchester, UK

Objective: To examine attitudes to self-sampling for human papillomavirus (HPV) testing among women from contrasting ethnic groups.Setting: Manchester, UK.Methods: Two hundred women of Indian, Pakistani, African-Caribbean and white British origin were recruited from social and community groups to participate in a questionnaire survey. The questionnaire included items on attitudes to self-sampling and intention to use the test.Results: Willingness to try to use the test was high, and women did not foresee religious or cultural barriers to self-sampling; however, a large proportion of women were concerned about doing the test properly. This concern was greatest in the Indian and African-Caribbean groups.Conclusions: Although women's willingness to try self-sampling for HPV is encouraging, worries about carrying out the procedure correctly must be addressed if women are to feel confident about the results of self-sampling methods and reassured by a negative result

Optimizing treatment outcomes in adolescents with eating disorders: The potential role of cognitive behavioral therapy

Objective While family‐based treatment (FBT) is the leading psychological therapy for adolescents with eating disorders, it is not universally effective or suitable. This study considered the effectiveness of cognitive‐behavioral therapy for eating disorders (CBT‐ED) in adolescent cases where FBT was not fully effective or where it was not applicable to the individual case. Method A transdiagnostic case series of 54 adolescents with eating disorders (52% with anorexia nervosa; 31% with atypical anorexia nervosa) were offered CBT‐ED following previous treatment using FBT or following FBT being judged inappropriate. Pre‐post outcomes were assessed using standardized measures of eating attitudes and clinical impairment, and weight change was measured for the patients with anorexia nervosa. Results The rate of attrition was similar to that found in other CBT‐ED studies (38.9% of patients who started CBT‐ED; 59.3% of those offered CBT‐ED). The patients showed positive outcomes on all measures, regardless of whether they had previously been treated with FBT. Effect sizes were moderate to large. Severity and duration of the eating disorder were unrelated to outcomes. Discussion CBT‐ED merits consideration as a second‐line approach for adolescents with eating disorders when FBT has not been effective or could not be applied. There is no evidence that previous failure to benefit from FBT impairs outcome from subsequent CBT‐ED, and severity and duration of the eating disorder did not influence outcome. Treatment matching for adolescents with eating disorders might consider the role of previous treatment outcomes and family availability in determining optimum treatment strategies for individuals

Does Race Matter? Understanding the role of social connectedness in student retention in hospitality programs

The recruitment and retention of ethnic minority students lies at the core of diversity efforts instituted by colleges and universities across the U.S. Withstanding the changing racial demographics in the U.S. and the need to have qualified ethnic minority professionals serving diverse communities, retention and matriculation heighten in importance. With the recruitment and retention challenge that many predominately White institutions (PWI’s) face in mind, this study aimed to understand how “social connectedness” related to retaining African-American students in a hospitality management program. Focus groups were utilized to chronicle the lived experience of African-American students. The findings suggest that the following factors play an important role in the retention of African American students: (1) being connected to the program, university community, and other ethnic minority students; (2) the depth and quality of relationships with faculty

EquiFACS: the Equine Facial Action Coding System

Although previous studies of horses have investigated their facial expressions in specific contexts, e.g. pain, until now there has been no methodology available that documents all the possible facial movements of the horse and provides a way to record all potential facial configurations. This is essential for an objective description of horse facial expressions across a range of contexts that reflect different emotional states. Facial Action Coding Systems (FACS) provide a systematic methodology of identifying and coding facial expressions on the basis of underlying facial musculature and muscle movement. FACS are anatomically based and document all possible facial movements rather than a configuration of movements associated with a particular situation. Consequently, FACS can be applied as a tool for a wide range of research questions. We developed FACS for the domestic horse (Equus caballus) through anatomical investigation of the underlying musculature and subsequent analysis of naturally occurring behaviour captured on high quality video. Discrete facial movements were identified and described in terms of the underlying muscle contractions, in correspondence with previous FACS systems. The reliability of others to be able to learn this system (EquiFACS) and consistently code behavioural sequences was high—and this included people with no previous experience of horses. A wide range of facial movements were identified, including many that are also seen in primates and other domestic animals (dogs and cats). EquiFACS provides a method that can now be used to document the facial movements associated with different social contexts and thus to address questions relevant to understanding social cognition and comparative psychology, as well as informing current veterinary and animal welfare practices

Microplastics in the Antarctic marine system: An emerging area of research

It was thought that the Southern Ocean was relatively free of microplastic contamination; however, recent studies and citizen science projects in the Southern Ocean have reported microplastics in deep-sea sediments and surface waters. Here we reviewed available information on microplastics (including macroplastics as a source of microplastics) in the Southern Ocean. We estimated primary microplastic concentrations from personal care products and laundry, and identified potential sources and routes of transmission into the region. Estimates showed the levels of microplastic pollution released into the region from ships and scientific research stations were likely to be negligible at the scale of the Southern Ocean, but may be significant on a local scale. This was demonstrated by the detection of the first microplastics in shallow benthic sediments close to a number of research stations on King George Island. Furthermore, our predictions of primary microplastic concentrations from local sources were five orders of magnitude lower than levels reported in published sampling surveys (assuming an even dispersal at the ocean surface). Sea surface transfer from lower latitudes may contribute, at an as yet unknown level, to Southern Ocean plastic concentrations. Acknowledging the lack of data describing microplastic origins, concentrations, distribution and impacts in the Southern Ocean, we highlight the urgent need for research, and call for routine, standardised monitoring in the Antarctic marine system

Pattern Formation on Trees

Networks having the geometry and the connectivity of trees are considered as the spatial support of spatiotemporal dynamical processes. A tree is characterized by two parameters: its ramification and its depth. The local dynamics at the nodes of a tree is described by a nonlinear map, given rise to a coupled map lattice system. The coupling is expressed by a matrix whose eigenvectors constitute a basis on which spatial patterns on trees can be expressed by linear combination. The spectrum of eigenvalues of the coupling matrix exhibit a nonuniform distribution which manifest itself in the bifurcation structure of the spatially synchronized modes. These models may describe reaction-diffusion processes and several other phenomena occurring on heterogeneous media with hierarchical structure.Comment: Submitted to Phys. Rev. E, 15 pages, 9 fig