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AbstractThe use of 'selectors'to control the filamentous bacteria which promote bulking in activated sludge is a well‐established concept. However, their use as a control measure for stable foams is still to be optimized. This paper presents the results of a preliminary investigation into the use of selectors at three sewage‐treatment works where stable foams occurred regularly. Chemical and biological data are reported together with the redox potentials in the selector zones. Taken overall, the results suggest that selectors cannot be designed or built on an ad hoc basis if the foam‐producing filaments are to be controlled.

Images of places in the countryside are structured along a number of dimensions corresponding to the attributes perceived in a place. A suitably constructed semantic differential measures the verbal representation of such images. A factor analysis identifies the dimensions, and an oblique solution gives a realistic appraisal of the structure. A second-order factor analysis reveals the nature of the basic structure underlying the images of differing countryside places. It appears that the structure is composed of three composite dimensions (second-order factors) which subsume the initial dimensions (first-order factors) of the image.

As the UK battery modelling community grows, there is a clear need for software that uses modern software engineering techniques to facilitate cross-institutional collaboration and democratise research progress. The Python package PyBaMM aims to provide a flexible platform for implementation and comparison of new models and numerical methods. This is achieved by implementing models as expression trees and processing them in a modular fashion through a pipeline. Comprehensive testing provides robustness to changes and hence eases the implementation of model extensions. PyBaMM is open source and available on GitHub. For more information visit www.pybamm.org.

In recent years, research has shown that iophenoxic acid is useful as a
biomarker in mammals. Its potential was initially demonstrated in several
species of carnivores but it has since been found to be suitable for use in
two species of herbivore, goats (Capra hircus) and deer
(Odocoileus virginianus). We investigated its
suitability for use in European rabbits
(Oryctolagus cuniculus) dosed at levels of 1.5, 5 and 10
mg kg-1. Mean plasma-iodine concentrations in these
groups increased to 328, 989 and 1438 g per 100 mL,
respectively, after three days. The half-life of IPA was greater than 25 days
at all three doses and plasma iodine remained at 4–10 times baseline
levels for 13, 15 and 17 weeks, respectively.

Protocol ; Introduction Aboriginal and Torres Strait Islander (hereafter respectfully referred to as Aboriginal) people are Australia's First Peoples, having the longest continuous culture in the world and deep spiritual connections with ancestral land. Improvements in their health and wellbeing is a major policy goal of Australian governments, as the legacy of colonisation and disruption of cultural practices contribute to major health challenges. Lack of culturally secure services impacts participation of Aboriginal people in health services. Aboriginal people with a brain injury typically experience poor access to rehabilitation and support following hospital discharge. 'Healing Right Way' (HRW) is a randomised control trial aiming to improve access to interdisciplinary and culturally secure rehabilitation services for Aboriginal people after brain injury in Western Australia, improve health outcomes and provide the first best practice model. This protocol is for the process evaluation of the HRW trial. Methods and analysis A prospective mixed methods process evaluation will use the Consolidated Framework for Implementation Research to evaluate implementation and intervention processes involved in HRW. Data collection includes qualitative and quantitative data from all sites during control and intervention phases, relating to three categories: (1) implementation of trial processes; (2) cultural security training; and (3) Aboriginal Brain Injury Coordinator role. Additional data elements collected from HRW will support the process evaluation regarding fidelity and intervention integrity. Iterative cross-sectional and longitudinal data synthesis will support the implementation of HRW, interpretation of findings and inform future development and implementation of culturally secure interventions for Aboriginal people. Ethics and dissemination This process evaluation was reviewed by The University of Western Australia Human Research Ethics Committee (RA/4/20/4952). Evaluation findings will be disseminated via academic mechanisms, seminars at trial sites, regional Aboriginal health forums, peak bodies for Aboriginal health organisations and the Australian Indigenous HealthInfoNet (https://healthinfonet. ecu.edu.au/). ; Rachel Skoss, Jane White, Mandy J Stanley, Melanie Robinson, Sandra Thompson, Elizabeth Armstrong, Judith M Katzenellenbogen

Angiostrongyliasis in humans causes a range of symptoms from mild headache and myalgia to neurological complications, coma and death. Infection is caused by the consumption of raw or undercooked intermediate or paratenic hosts infected with Angiostrongylus cantonensis or via contaminated vegetables or water. We describe a cluster of cases involved in the shared meal of wild raw monitor lizard in the Lao PDR. Seven males, aged 22–36 years, reported headaches, abdominal pain, arthralgia, myalgia, nausea/vomiting, diarrhea, neurological effects and loss of appetite. Five were admitted to hospital. The final diagnosis was made by clinical presentation and case history, and positive A. cantonensis PCR for two cases. All hospitalized patients recovered fully following supportive treatment. The remaining two individuals sought local home remedies and made full recovery. Whilst most published reports concern infections via consumption of molluscs, few detailed reports exist on infections that result from the consumption of reptiles and there exists little awareness in Lao PDR. This case cluster, which originates from a single meal, highlights the potential public health risk of the consumption of raw and wild-caught meat in Lao PDR and the Southeast Asia region. Without specific diagnostics, clinical history and the consideration of recent food consumption are important when evaluating patients.