Petroleum hydrocarbons in fresh waters: a preliminary desk study and bibliography

A literature survey was carried out into the effects of petroleum hydrocarbons in freshwater, from the toxicity, biodegradability and concentration aspects. It was supplemented by a selective search on hydrocarbons in the marine environment for comparison. The aim was to determine the major inputs of these hydrocarbons, their accumulation, effects and fate in freshwaters. The search was confined to the period 1965-1978. The bibliography contains 390 references, divided by subject

Do simple "groundrules" reduce preschoolers\u27 suggestibility about experienced and nonexperienced events?

This study examined whether providing preschool children with simple groundrules (the importance of being complete, saying &bdquo;I don‟t know‟, correcting the interviewer and not guessing) would reduce false details in their recall of a staged event. Forty-nine preschool children participated in an event that consisted of two activities. One or two days later they were given a biasing interview that included false suggestions about one of the experienced activities as well as a non-experienced activity. For the other activity, no suggestions were made. Eight, 15, and 22 days after the event, the children were required to recall all three activities in their own words. Immediately prior to their recall, half of the children were provided with the groundrules while the remaining children were not. The children in the control group also participated in a fifth interview in which they received the groundrule instructions. The results revealed that the provision of the groundrules had negligible impact on the accuracy of information provided irrespective of the context or order of the interview or the activity being recalled. The implications of these results are discussed and suggestions for future research are offered.<br /

An online narrative archive of service user experiences to support the education of undergraduate physiotherapy and social work students in North East England: An evaluation study.

Background: Patient narratives are a viable process for patients to contribute to the education of future health professionals and social workers. Narratives can facilitate a deeper understanding of the self and others through self-reflection and encourage transformative learning among students. Increasingly, accounts of health and care are available online but their use in health and social work education requires evaluation. This study explored the experiences of stakeholders who contributed to, developed and used an online narrative archive, which was developed in collaboration with five universities and healthcare providers in the North East of England (CETL4HealthNE). Methods: Realistic evaluation principles were used to underpin data collection, which consisted of semi-structured interviews, a focus group and observations of educators using narrative resources in teaching sessions with different professional groups in two universities. Participants included educators, storytellers, narrative interviewers, students and a transcriber. Data were analysed thematically by two researchers and verified by a third researcher. Findings: Stakeholders reported that listening to patient narratives was challenging. The process of contributing the story was a positive cathartic experience for patients, and the powerful storyteller voice often evoked empathy. Students commented on the ability of the online audio-visual narratives to enable them to see the patient holistically, and educators reported that narratives provided a means to introduce sensitive topics. Conclusions: The use of a locally generated online narrative archive is beneficial for storytellers, students and educators, providing an opportunity to influence healthcare professional training. Care needs to be taken when exposing individuals to potentially sensitive narratives

Online abuse: teenagers might not report it because they often don’t see it as a problem

The government’s Online Safety Bill, recently announced in the Queen’s Speech, calls for a new system of regulation for tech companies with the goal of preventing online harms, including disinformation, cyberbullying, extremist content, and advocacy of self-harm. As children are at particularly high risk from some types of harm, Dr Holly Powell-Jones, explains the need to educate young people to know their rights online

Improved high temperature resistant matrix resins

The objective was to develop organic matrix resins suitable for service at temperatures up to 644 K (700 F) and at air pressures up to 0.4 MPa (60 psia) for time durations of a minimum of 100 hours. Matrix resins capable of withstanding these extreme oxidative environmental conditions would lead to increased use of polymer matrix composites in aircraft engines and provide significant weight and cost savings. Six linear condensation, aromatic/heterocyclic polymers containing fluorinated and/or diphenyl linkages were synthesized. The thermo-oxidative stability of the resins was determined at 644 K and compressed air pressures up to 0.4 MPa. Two formulations, both containing perfluoroisopropylidene linkages in the polymer backbone structure, exhibited potential for 644 K service to meet the program objectives. Two other formulations could not be fabricated into compression molded zero defect specimens

The effect of events context on children\u27s recall of non-experienced events across mutiple interviews

Purpose: The current study examined whether young children\u27s willingness to assent to, and provide details about, a false (non-experienced) activity differs depending on whether the activity was allegedly embedded within (a) a specific event or (b) a broad (non-specified) time frame. Method:&nbsp; Ninety-nine children aged 4--5 years (from both low and high socioeconomic backgrounds) either (a) participated in a staged event that consisted of two activities or (b) did not participate in the staged event. One or two days later, all children were given false suggestions about a non-experienced (false) activity that had either high or low plausibility. Approximately 8, 15, and 22 days after the event, children were asked to recall the activities, and to answer a series of specific cued-recall questions. Results: There was no effect of event context on assent rates, and the rate at which children reported interviewer suggestions. However, children who participated in the staged event provided fewer details about the false activity. Further, among those children who assented to the false activity, fewer subjects, objects, actions, temporal markers, locations, fantastic/improbable details, and confabulation errors were reported when the activity was embedded within the specific staged event. Conclusion: The degree of error in children\u27s accounts of a completely false activity is reduced when the activity is suggested to have occurred within a specified event as opposed to a broad (non-specified) time frame.<br /

It’s not queasy being green : the role of disgust in willingness-to-pay for more sustainable product alternatives

Scholars differ in the extent to which they regard the “yuck factor” as an important predictor of sustainable consumption decisions. In the present decision experiment we tested whether people’s disgust traits predicted relative willingness-to-pay (WTP) for sustainable product alternatives, including atypically-shaped fruit and vegetables; insect-based food products; and medicines/drinks with reclaimed ingredients from sewage. In a community sample of 510 participants (255 women), using path analyses we examined the extent to which effects of disgust traits on WTP were mediated by cognitive appraisals of perceived taste, health risk, naturalness, visual appeal, and nutritional/medicinal value. Further, we assessed whether these effects were moderated by the tendency to regulate disgust using reappraisal and suppression techniques. Across all product categories, when controlling for important covariates such as pro-environmental attitudes, we found a significant negative effect of trait disgust propensity on WTP. In total, a 1 SD increase in participants’ disgust propensity scores predicted between 6% and 11% decrease in WTP. Appraisals of perceived naturalness, taste, health risk, and visual appeal significantly mediated these effects, differing in importance across the product categories, and explaining approximately half of the total effect of disgust propensity on WTP. Little-to-no support was found for moderation of effects by trait reappraisal or suppression. Individual differences in disgust are likely to be a barrier for certain viable sustainable alternatives to prototypical products. Marketing interventions targeting consumer appraisals, including in particular the perceived naturalness and taste, of these kinds of products may be effective

Aboriginal Voices and Inclusivity in Australian Land Use Country Planning

Following the Australian High Court’s decision in the Mabo case in 1992, it is now instrumental for land use planners to be educated and skilled in Aboriginal and Torres Strait Islander (ATSI) people’s rights, interests, needs and aspirations in conventional and contemporary land use planning processes to ensure inclusivity within Australian culture and its structures.  As an applied science discipline, for land use planning these imperatives include formally recognising ATSI peoples’ long connections with Country, acceptance of the High Court’s rejection of the doctrine of terra nullius, recognition that ATSI people will always retain their special relationship with and responsibility for land and sea Country, but more importantly incorporating Indigenous land planning values into extant Western land use planning instruments (ALGA 1999:225).  This paper reviews and critiques the position and alignment of this applied science discipline, from an Indigenous perspective, and its policy and education accreditation governance role in responding to contemporary land use determinations as it impacts upon inclusivity of Indigenous knowledge, law, and policy in practice and educating the future generation of land use planners

Discrete Event Simulation for Decision Modeling in Health Care: Lessons from Abdominal Aortic Aneurysm Screening

Markov models are often used to evaluate the cost-effectiveness of new healthcare interventions but they are sometimes not flexible enough to allow accurate modeling or investigation of alternative scenarios and policies. A Markov model previously demonstrated that a one-off invitation to screening for abdominal aortic aneurysm (AAA) for men aged 65 y in the UK and subsequent follow-up of identified AAAs was likely to be highly cost-effective at thresholds commonly adopted in the UK (£20,000 to £30,000 per quality adjusted life-year). However, new evidence has emerged and the decision problem has evolved to include exploration of the circumstances under which AAA screening may be cost-effective, which the Markov model is not easily able to address. A new model to handle this more complex decision problem was needed, and the case of AAA screening thus provides an illustration of the relative merits of Markov models and discrete event simulation (DES) models. An individual-level DES model was built using the R programming language to reflect possible events and pathways of individuals invited to screening v. those not invited. The model was validated against key events and cost-effectiveness, as observed in a large, randomized trial. Different screening protocol scenarios were investigated to demonstrate the flexibility of the DES. The case of AAA screening highlights the benefits of DES, particularly in the context of screening studies

Cell wall arabinan is essential for guard cell function

Stomatal guard cells play a key role in the ability of plants to survive on dry land, because their movements regulate the exchange of gases and water vapor between the external environment and the interior of the plant. The walls of these cells are exceptionally strong and must undergo large and reversible deformation during stomatal opening and closing. The molecular basis of the unique strength and flexibility of guard cell walls is unknown. We show that degradation of cell wall arabinan prevents either stomatal opening or closing. This locking of guard cell wall movements can be reversed if homogalacturonan is subsequently removed from the wall. We suggest that arabinans maintain flexibility in the cell wall by preventing homogalacturonan polymers from forming tight associations