Beyond Mains Water: A Study of Households that are Off-Grid for Water in Regional New South Wales, Australia

This thesis offers a new understanding of everyday life for households living off-grid from municipal water and sewerage systems. The thesis argues for household sustainability policy informed by existing adaptive capacities and experiments with alternatives to mains water infrastructure and governance systems in the Minority World. It does so through a research design that combined questionnaire surveys with semi-structured interviews and ‘home-insight tours’ conducted with participants who live off-grid for water in the Eurobodalla Shire, a non-metropolitan local government area situated on the south coast of New South Wales, Australia. Building on relational ontologies of everyday life, this thesis brings into conversation concepts from social practice theory and embodied feminist scholarship, to conceptualise the more-than-human, discursive, embodied and affective dimensions that shape everyday water practices. Across the empirical chapters attention turns specifically to developing understanding of human-water relations in the non-mains water home through three inter-related everyday water practices: provision, (re)use and disposal. Attention is drawn to the embodied qualities of skills and competencies in managing the material infrastructures of domestic water supply, and the discourses, sensuous bodies and emotions invested in practices of water capture, (re)use and disposal—elements that are often ignored in water policy debates. The thesis illustrates the importance of geographical relational thinking to conceive of domestic water self-sufficiency. Practices of provisioning, (re)using and disposing of water are always contingent upon the situated socio-material arrangements through which people make sense of themselves and home

Fire, water and everyday life: bushfire and household defence in a changing climate

This paper examines how the availability or scarcity of water influenced the survival related decisions of households during the October 2013 State Mine Fire in the Blue Mountains, New South Wales, Australia. Narrative analysis of semi-structured interviews with 18 households impacted by the bushfire revealed that drought conditions in the months preceding the bushfire left many households dependent on non-reticulated water supplies vulnerable at the time the fire threat became apparent. Despite considerable preparations for water storage and usage during the fire, weak links in planning (e.g., top-ups, failure of pumps, generators and hoses) meant water was not accessible when needed most. This paper discusses a gap in bushfire safety scholarship on water usage and everyday trade-offs amongst residents in areas independent of reticulated (mains) water supplies. Findings suggest a need for more detailed and consistent information in official bushfire safety advice on storing water prior to a bushfire and effective water distribution systems for household defence and fire fighting

Into the firing line: civilian ingress during the 2013 Red October bushfires, Australia

A major issue for bushfire management arises when residents decide to leave a safe area and enter the fire zone to rescue or defend their property, pets, loved ones or other assets. Here, we use statistical and narrative analyses of data from an online survey and semi-structured interviews with residents affected by the 2013 Red October bushfires in New South Wales, Australia. The survey results revealed that of the 58 % of respondents who were not at home at the time the threat became apparent, 65 % indicated that they attempted to get home prior to the arrival of the fire front. In doing so, many endangered themselves, their family, friends and emergency services personnel. This paper discusses the shortcomings of bushfire survival plans and official risk communication, which do not cater well for household units that are divided or unattended when a bushfire starts. Findings suggest that to enhance bushfire safety and preparedness, emergency managers should acknowledge and speak more directly to the specific constraints to action for particular social groups at the wildland-urban interface, including families with school-age children, commuters and absentee landholders

Cardiorespiratory requirements of the 6-min walk test in patients with left ventricular systolic disfunction and no major structural heart disease

The six-minute walk test (6-MWT) is widely used to assess functional status in patients with chronic heart failure (CHF). The aims of the present study were: (1) to compare metabolic gas exchange during the 6-MWT in older patients with left ventricular systolic dysfunction (LVSD) and in breathless patients with no major structural heart disease (MSHD); (2) to determine the exercise intensity of the 6-MWT relative to peak oxygen uptake; (3) to establish the accuracy and reproducibility of the Metamax 3B ergospirometer during an incremental workload. Twenty four older patients with LVSD (19 male; age 76 ± 5 years; BMI 27 ± 4), and 18 patients with no MSHD (12 male; age 75 ± 8 years; BMI 27 ± 4) attended on consecutive days at the same time. Patients completed a 6-MWT with metabolic gas exchange measurements using the Metamax 3B portable ergospirometer, and an incremental cycle ergometry test using both the Metamax 3B and Oxycon Pro metabolic cart. Patients returned and performed a second 6-MWT and an incremental treadmill test, metabolic gas exchange was measured with the Metamax 3B. In patients with LVSD, the 6-MWT was performed at a higher fraction of maximal exercise capacity (p = 0.02). The 6-MWT was performed below the anaerobic threshold in patients with LVSD (83 %) and in patients with no MSHD (61 %). The Metamax 3B showed satisfactory to high accuracy at 10 W and 20 W in patients with LVSD (r = 0.77 - 0.97, p < 0.05), and no MSHD (r = 0.76 - 0.94, p < 0.05). Metabolic gas exchange variables measured during the 6-MWT showed satisfactory to high day-to-day reproducibility in patients with LVSD (ICC = 0.75 - 0.98), but a higher variability was evident in participants with no MSHD (ICC = 0.62 - 0.97). The Metamax 3B portable ergospirometer is an accurate and reproducible device during submaximal, fixed rate exercise in older patients with LVSD and no MSHD. In elderly patients with LVSD and no MSHD, the 6-MWT should not be considered a maximal test of exercise capacity but rather a test of submaximal exercise performance. Our study demonstrates that the 6-MWT takes place at a higher proportion of peak oxygen uptake in patients with LVSD compared to those with no MSHD, and may be one reason why fatigue is a more prominent symptom in these patients

Comparison of the performance of photonic band-edge liquid crystal lasers using different dyes as the gain medium

The primary concern of this work is to study the emission characteristics of a series of chiral nematic liquid crystal lasers doped with different laser dyes (DCM, pyrromethene 580, and pyrromethene 597) at varying concentrations by weight (0.5-2 wt %) when optically pumped at 532 nm. Long-wavelength photonic band-edge laser emission is characterized in terms of threshold energy and slope efficiency. At every dye concentration investigated, the pyrromethene 597-doped lasers exhibit the highest slope efficiency (ranging from 15% to 32%) and the DCM-doped lasers the lowest (ranging from 5% to 13%). Similarly, the threshold was found to be, in general, higher for the DCM-doped laser samples in comparison to the pyrromethene-doped laser samples. These results are then compared with the spectral properties, quantum efficiencies and, where possible, fluorescence lifetimes of the dyes dispersed in a common nematic host. In accordance with the low thresholds and high slope efficiencies, the results show that the molar extinction coefficients and quantum efficiencies are considerably larger for the pyrromethene dyes in comparison to DCM, when dispersed in the liquid crystal host.open191

Talking about links between sexually transmitted infections and infertility with college and university students from SE England, UK: a qualitative study

Background Sexually transmitted infections (STIs) such as chlamydia and gonorrhoea are largely symptomless diseases which, left untreated, can result in serious complications including infertility. Fertility problems currently affect approximately one in seven couples in the UK and there is increasing demand for couples seeking reproductive technologies. Young people are at greatest risk of contracting STIs, therefore this study aimed to identify young people’s knowledge and beliefs about the link between untreated STIs and infertility. Methods Focus groups were conducted with participants aged 16–24 years old inclusive in college or university settings in the SE of England. Groups were quota sampled on the basis of age and gender. A topic guide was used. The data were analysed using a framework analysis approach. Results Ten single-sex focus groups were conducted with sixty participants: six groups of college students and four groups of university students. Participants were generally aware of the link between STIs and potential infertility and considered the discussion of this subject very relevant at their age. Knowledge about how and why STIs potentially lead to fertility complications was poor. The issues of blame relating to infertility following an STI emerged, although most participants did not think that access to free reproductive technologies after an untreated STI should be limited. Conclusions Young people would benefit from more education in order to improve their understanding of the long-term consequences of untreated STIs, such as infertility. Participants in our sample felt these were extremely relevant and important issues for them to understand alongside current education about STIs

Effects of antiplatelet therapy on stroke risk by brain imaging features of intracerebral haemorrhage and cerebral small vessel diseases: subgroup analyses of the RESTART randomised, open-label trial

Background Findings from the RESTART trial suggest that starting antiplatelet therapy might reduce the risk of recurrent symptomatic intracerebral haemorrhage compared with avoiding antiplatelet therapy. Brain imaging features of intracerebral haemorrhage and cerebral small vessel diseases (such as cerebral microbleeds) are associated with greater risks of recurrent intracerebral haemorrhage. We did subgroup analyses of the RESTART trial to explore whether these brain imaging features modify the effects of antiplatelet therapy