Performance of the rebuilt SUERC single-stage accelerator mass spectrometer

The SUERC bipolar single-stage accelerator mass spectrometer (SSAMS) has been dismantled and rebuilt to accommodate an additional rotatable pre-accelerator electrostatic spherical analyser (ESA) and a second ion source injector. This is for the attachment of an experimental positive-ion electron cyclotron resonance (ECR) ion source in addition to a Cs-sputter source. The ESA significantly suppresses oxygen interference to radiocarbon detection, and remaining measurement interference is now thought to be from 13C injected as 13CH molecule scattering off the plates of a second original pre-detector ESA

The mental health of Australian elite athletes

OBJECTIVES: Currently, little is known about the prevalence of mental disorders in athletes. This study aims to investigate Australian elite athletes' symptoms of general psychological distress and common mental disorders. DESIGN: A cross-sectional survey design was employed to assess self-reported symptom prevalence. METHODS: A total of 224 elite athletes (118 female, 106 male) from national sporting organisations in Australia were administered a self-report internet-based survey comprising measures of demographic status and mental health symptoms. RESULTS Overall, 46.4% of athletes were experiencing symptoms of at least one of the mental health problems assessed. Percentages meeting criteria for mental disorders were similar to previous epidemiological studies of both international athlete and community samples: depression (27.2%), eating disorder (22.8%), general psychological distress (16.5%), social anxiety (14.7%), generalised anxiety disorder (7.1%), and panic disorder (4.5%). Injured athletes had higher levels of both symptoms of depression (t=3.23, p=.001) and generalised anxiety disorder (t=2.26, p=.025). CONCLUSIONS: The level of symptoms of mental health problems reported by elite athletes appears similar to that observed in the community. However, caution must be exercised in interpreting the findings, as possible demographic differences between athletes and comparison population datasets may exist. Furthermore, self-selection of respondents in the present study may have reduced the representativeness of the sample and the validity of the comparisons. Athletes, particularly those currently injured, should be well-supported to seek help for mental disorders through access to mental health professionals.The study was supported by funding from the Australian Institute of Sport (AIS). AG was supported by a joint scholarship from the AIS, the Brain and Mind Research Institute, Orygen, and The Australian National University without which this research could not be possible. KG is supported by National Health and Medical Research Council (NHMRC) Senior Research Fellowship No. 525413. PB is supported by NHMRC Early Career Fellowship 1035262. The AIS provided the funding for the present study and assisted with recruitment but was not involved in the analysis, interpretation or the right to approve or disapprove publication of the research

Survey of Stormwater BMP Maintenance Practices

Many stormwater management manuals and guidance documents have stated the importance and estimated frequency of maintenance for stormwater best management practices (BMPs), but few have documented the actual frequency and intensity of maintenance required to maintain a desired level of performance and efficiency. Increased attention to mass balance, numerical goals, total maximum daily loads (TMDLs), and non-degradation requirements has created the need for more emphasis on BMP maintenance in order to meet permitting and reporting requirements. The purpose of this paper is to advance short and long-term maintenance considerations so as to develop more realistic maintenance plans. To do so, we conducted a national literature search for maintenance costs and developed, distributed, analyzed the results of a detailed municipal public works survey. The specific goals of the survey were to identify and inventory stormwater BMP O&M efforts and costs. Survey questionnaires were sent to 106 cities with 28 responses received. The survey related to the following topics: number of BMPs in the city, frequency of BMP inspections, average staff-hours spent per routine inspection/maintenance, complexity of BMP maintenance, most frequent causes of performance deterioration within BMPs, and cost of non-routine maintenance activities. The results of the survey revealed that most (89%) cities perform routine maintenance once per year or less. Staff-hours per year ranged from one to four hours for most stormwater BMPs and but were significantly more for rain gardens (one to sixteen hours per year) and wetlands (one to nine hours per year). The most common causes of performance deterioration were sediment buildup and litter/debris for most stormwater BMPs. Respondents indicated that the removal of accumulated sediment incurred the largest cost of all BMP maintenance activities

Internet-based interventions to promote mental health help-seeking in elite athletes: an exploratory randomized controlled trial

Background: Mental disorders are more common in young adults than at any other life stage. Despite this, young people have low rates of seeking professional help for mental health problems. Young elite athletes have less positive attitudes toward seeking help than nonathletes and thus may be particularly unlikely to seek help. Interventions aimed at increasing help-seeking in young elite athletes are warranted. Objective: To test the feasibility and efficacy of three Internet-based interventions designed to increase mental health help-seeking attitudes, intentions, and behavior in young elite athletes compared with a control condition. Methods: We conducted a randomized controlled trial (RCT) of three brief fully automated Internet-based mental health help-seeking interventions with 59 young elite athletes recruited online in a closed trial in Australia. The interventions consisted of a mental health literacy and destigmatization condition, a feedback condition providing symptom levels, and a minimal content condition comprising a list of help-seeking resources, compared with a control condition (no intervention). We measured help-seeking attitudes, intentions and behavior using self-assessed surveys. Participation was open to elite athletes regardless of their mental health status or risk of mental illness. Results: Of 120 athletes initially agreeing to participate, 59 (49%) submitted a preintervention or postintervention survey, or both, and were included in the present study. Adherence was satisfactory, with 48 (81%) participants visiting both weeks of assigned intervention material. None of the interventions yielded a significant increase in help-seeking attitudes, intentions, or behavior relative to control. However, at postintervention, there was a trend toward a greater increase in help-seeking behavior from formal sources for the mental health literacy/destigmatization condition compared with control (P = .06). This intervention was also associated with increased depression literacy (P = .003, P = .005) and anxiety literacy (P = .002, P = .001) relative to control at postintervention and 3-month follow-up, respectively, and a reduction in depression stigma relative to control at postintervention (P = .01, P = .12) and anxiety stigma at 3-month follow-up (P = .18, P = .02). The feedback and help-seeking list interventions did not improve depression or anxiety literacy or decrease stigmatizing attitudes to these conditions. However, the study findings should be treated with caution. Due to recruitment challenges, the achieved sample size fell significantly short of the target size and the study was underpowered. Accordingly, the results should be considered as providing preliminary pilot data only.The study was supported by a grant from the AIS. AG is supported by a joint scholarship from the AIS, the Brain and Mind Research Institute, Orygen, and The Australian National University. KG is supported by NHMRC Senior Research Fellowship No. 525413. HC is supported by NHMRC Senior Principal Research Fellowship No. 525411. AC is supported by NHMRC Early Career Fellowship 1013199. PB is supported by NHMRC Capacity Building Grant 418020

Internet-based interventions to promote mental health help seeking in elite athletes: an exploratory randomised controlled trial

Background: Mental disorders are more common in young adults than at any other life stage. Despite this, young people have low rates of seeking professional help for mental health problems. Young elite athletes have less positive attitudes toward seekin

A framework to explore micronutrient deficiency in maternal and child health in Malawi, Southern Africa

<p>Abstract</p> <p>Background</p> <p>Global food insecurity is associated with micronutrient deficiencies and it has been suggested that 4.5 billion people world-wide are affected by deficiencies in iron, vitamin A and iodine. Zinc has also been identified to be of increasing concern. The most vulnerable are young children and women of childbearing age. A pilot study has been carried out in Southern Malawi, to attempt to link the geochemical and agricultural basis of micronutrient supply through spatial variability to maternal health and associated cultural and social aspects of nutrition. The aim is to establish the opportunity for concerted action to deliver step change improvements in the nutrition of developing countries.</p> <p>Results</p> <p>Field work undertaken in August 2007 and July/August 2008 involved the collection of blood, soil and crop samples, and questionnaires from ~100 pregnant women. Complex permissions and authorisation protocols were identified and found to be as much part of the cultural and social context of the work as the complexity of the interdisciplinary project. These issues are catalogued and discussed. A preliminary spatial evaluation is presented linking soil quality and food production to nutritional health. It also considers behavioural and cultural attitudes of women and children in two regions of southern Malawi, (the Shire Valley and Shire Highlands plateau). Differences in agricultural practice and widely varying soil quality (e.g. pH organic matter, C/N and metal content) were observed for both regions and full chemical analysis of soil and food is underway. Early assessment of blood data suggests major differences in health and nutritional status between the two regions. Differences in food availability and type and observations of life style are being evaluated through questionnaire analysis.</p> <p>Conclusion</p> <p>The particular emphasis of the study is on the interdisciplinary opportunities and the barriers to progress in development support in subsistence communities. Engaging at the community level and the balance of expectations from both study subjects and research team highlight the merit of careful and detailed planning and project delivery.</p

Predicting Suicide Risk in Trauma Exposed Veterans: The Role of Health Promoting Behaviors

Returning veterans of the wars in Iraq and Afghanistan experience high rates of post-traumatic stress disorder (PTSD) and suicidal behavior. Suicidal ideation is among the strongest risk factors for completed suicide. Some research suggests an association between PTSD and suicidal ideation, and that health-promoting behaviors-behaviors that sustain or increase well-being-play a role in this association. The current study examined whether health-promoting behaviors moderate the association between PTSD severity and suicidal ideation.Veterans of Operation Enduring Freedom/Operation Iraqi Freedom (OEF/OIF; N = 108) completed measures of PTSD symptoms, trauma exposure, suicidal ideation, and health-promoting behaviors.Moderated regression was used to test the hypothesis. Results indicated that health promoting behaviors, β = -.06, p = .001, and PTSD symptoms, β = .36, p < .001, were significantly related to suicidal ideation. Consistent with our main hypothesis, the health promoting behaviors x PTSD interaction term was significantly associated with suicidal ideation, β = -.09, p = .001. The overall model accounted for 13% of the variance in suicidal ideation. Among individuals with high PTSD symptom severity, those who engaged in more health promoting behaviors reported less suicidal ideation than those who engaged in fewer health promoting behaviors.Health-promoting behaviors could be important for reducing suicidal ideation among veterans with high levels of PTSD symptoms. It is recommended that future research examine health promotion interventions as a means of reducing suicidal ideation