Earthquake-controlled event deposits and its tectonic significance from the Middle Permian Wandrawandian Siltstone in the Sydney Basin, Australia

The Sydney-Bowen basin in eastern Australia is an elongate back arc-converted foreland basin system situated between the Lachlan Fold Belt in the west and the New England Fold Belt in the east. The Middle Permian Wandrawandian Siltstone at Warden Head near Ulladulla in the southern Sydney Basin is dominated by fossiliferous siltstone and mudstone, with a large amount of dropstones and minor pebbly sandstone beds. Two general types of deposits are recognized from the siltstone unit in view of the timing and mechanism of formation. One is represented by the primary deposits from offshore to subtidal environments with abundant dropstones of glacial marine origin. The second type is distinguished by secondary, soft-sediment deformational deposits and structures, and comprises three layers of mudstone dykes of seismic origin. In the latter type, metre scale, laterally extensive syn-depositional slump deformation structures occur in the middle part of the Wandrawandian Siltstone. The deformation structures vary in morphol-ogy and pattern, including large-scale complex-type folds, flexural stratification, concave-up structures, faulting of small displacements accompanied by folding and brecciation. The slumps and associated syn-sedimentary structures are attributed to penecontemporaneous deformations of soft sediments (mostly silty mud) formed as a result of mass movement of unconsolidated and/or semi-consolidated substrate following an earthquake event. The occurrence of the earthquake event deposits supports the current view that the Sydney Basin was located in a back-arc setting near the New England magmatic arc on an active continental margin during the Middle Permian.

'Don't be a smart arse': Young workers, individualization, and an ethic of enterprise in Jamie's Kitchen

In Jamie’s Kitchen the high profile celebrity chef Jamie Oliver set out to transform a group of unemployed young Londoners into the enterprising, ideal worker of 21st century flexible capitalism. The paper will argue that this reality TV series provides a means to explore key features of new work regimes. We will analyse particular aspects of the increasingly powerful individualising and normalising processes shaping the lifeworlds of young workers in a globalising risk society. Processes that require those who wish to be positively identified as entrepreneurial to do particular sorts of work on themselves; or suffer the consequences.
Drawing on Foucault’s later work on the care of the self, and the  individualization theses of the reflexive modernization literature, we identify and analyse the forms of personhood that various institutions, organisations and individuals seek to encourage in young workers; and the ways in which institutionalised risk environments increasingly individualise the risks and uncertainties associated with labour market participation. The paper argues that our understandings of what it means to be a worker of the world, are being rearticulated around the idea that we are free to choose. And we must exercise this freedom – reap its rewards, carry its obligations – as individuals.

Teacher is here to ask for your help : a story of schools, employers and networks

This paper explores the development of the Jobs4Kids (J4K) campaign, a joint initiative of the SGR LLEN Employer Reference Group and the Beacon Foundation. Involving a three-year business plan, the J4K campaign aims to broker young people into employment in local jobs in the region. The campaign is the result of the intersection between an evolving project within the LLEN and the growth of an established program of the Beacon Foundation. The paper will use a Deleuzian lens to explore the ground shifts that have occurred in the process of forming this connection; I am concerned with the intersecting movements of different orders that have created a necessary transitory coordination. Within such a 'rhizome' there are only lines: dimensional lines of segmentarity and stratification and lines of flight as 'the maximum dimension after which the multiplicity undergoes metamorphosis, changes in nature' (Deleuze & Guattari 1987 p.21). My perspective of this metamorphosis is specifically focused on SGR LLEN; I close with a consideration of the possibilities of this change in nature for the continuing work of the LLEN.

Physical environmental conditions, spawning and early-life stages of an estuarine fish : climate change implications for recruitment in intermittently open estuaries

Significant variation in the egg and larval survival and juvenile recruitment of estuarine fishes has been linked to fluctuating environmental conditions. This present study compared the distribution and abundance of black bream (Acanthopagrus butcheri) eggs and yolk-sac larvae between two microtidal estuaries of different flow regimes, where the riverine flow into the Glenelg estuary was around eight times the flow volume into the Hopkins estuary. Samples were collected monthly from September to November at sites along each estuary where vertical profiles of temperature, salinity and dissolved oxygen (DO) were measured, and vertically stratified sampling of black bream eggs and yolk-sac larvae was conducted using a Schindler sampler. Salt wedge formation was apparent in both estuaries, with significant de-oxygenation of deeper, saline waters. Eggs occurred in a wide range of DO levels but yolk-sac larvae were less common at the lowest levels. Most eggs and yolk-sac larvae were collected in salinities greater than 10. Results suggested that egg mortality was higher in the Hopkins than the Glenelg estuary, which may be associated with the hypoxic conditions characteristic of low-flow conditions. The results have significant implications in terms of climate change that is predicted to lead to warmer, drier conditions in south-eastern Australia, potentially increasing stratification and subsequent hypoxic zones.

Monitoring the marine environment adjacent to a petroleum refinery on Corio Bay, Victoria, Australia /Peter James Gilbert

The objective of the work reported in this thesis was to design and implement an ecological effects environmental monitoring program which would: 1) Collect baseline biological information on sessile epibiotic fouling communities from an area adjacent to a petroleum refinery located on Corio Bay, Victoria, to allow comparison with results of future monitoring for the assessment of long term temporal water quality trends. 2) Detect and — if possible - estimate the magnitude of any influence on epibiotic fouling communities within the Corio Bay marine ecosystem attributable to operations at the Shell Petroleum Refinery. 3) Investigate the extent of thermal stratification and rate of dispersal of the petroleum refinery main cooling-water outfall plume (discharging up to 350,000 tonnes of warmed seawater per day), and its effect on epibiotic communities within the EPA-defined mixing zone. A major component of the work undertaken was the design and development of artificial-substrate biological sampling stations suitable for use under the conditions prevailing in Corio Bay, and the development of appropriate quantitative underwater photographic sampling techniques to fulfil the experimental criteria outlined above. Experimental and other constraints imposed on the design of the stations precluded the simple suspension of frames from jetties or pylons, a technique widely used in previous work of this type. Artificial substrate panels were deployed along three radial transects centred within and extending beyond the petroleum refinery main cooling-water mixing zone. Identical substrate panels were deployed at a number of control sites located throughout Corio Bay, each chosen for differences in their degree of exposure to such factors as water movement, depth, shipping traffic and/or comparable industrial activity. The rate of colonisation (space utilisation) and the development of epibiotic fouling communities on artificial substrate panels was monitored over two twelve-month sampling periods using quantitative underwater photographic sampling techniques. Sampling was conducted at 4-8 week intervals with the rate of panel colonisation and community structure determined via coverage measurements. Various species of marine algae, polychaete tubeworms, hydroids, barnacles, simple and colonial ascidians, sponges, bivalve molluscs and encrusting bryozoans were all detected growing on panels. Communities which established on panels within the cooling-water mixing-zone and those at control sites were compared using statistical procedures including agglomerative hierarchical cluster analysis. A photographic sample archive has been established to allow comparison with similar future studies.

Population dynamics of the infaunal bivalve, Soletellina alba

The population dynamics of the infaunal bivalve Soletellina alba was investigated at three sites situated within close proximity to the mouth of the Hopkins River estuary. The initial study design was planned to examine the importance of winter flooding to the persistence of this bivalve mollusc within the Hopkins estuary, since mass mortalities have been observed during previous years coincident with periods of winter flooding. Unfortunately, the climatic conditions experienced during this study were atypical compared to the long-term average, so detailed sampling was limited to two, unanticipated, non-flood years rather than two, highly anticipated, flood years. This hampered my ability to conduct complete tests of the importance of winter flooding. Patterns of river discharge and the frequency and duration of mouth opening and closing differed greatly from that expected. Unexpectedly, periods of mouth closure were not always associated with periods of minimal river discharge; low salinities were another unexpected result during an extended period of mouth closure during 1998. As expected, salinities varied considerably with increasing water depth when the estuary mouth was open. Mouth closure lead to salinities becoming more uniform between water depths but hypoxic and anoxic conditions became evident via stratification in the water column at 1 m below the Australian Height Datum (AHD). Other than trends associated with increased water depth, significant variation was not evident between measurements of salinity taken from three sites within close proximity of the estuary mouth (approximately 500 m), or during changes in tide. The most pertinent anomaly was the absence of winter flooding. The distribution and abundance of juvenile and adult S. alba was variable across all Dates, Sites and Channel elevations (i.e. water depths) sampled during this study. An experimental test comparing the recruitment of juveniles at different channel elevations and in sediments of varying particle size was conducted during an exceptionally successful period of recruitment during 1999. The results of these tests showed that recruitment was greatest at the shallowest channel elevation used, and there was little evidence that sediment particle size influenced recruitment. In contrast to 1999, recruitment during 1997 or 1998 was extremely poor. Growth rates were monitored using tagged individuals held in caged and uncaged plots, which revealed that growth was highly variable among individuals, but not between Sites. These tests also revealed that growth was negligible during the colder, winter months, and that the fastest growing individuals were capable of growing 0.2 mm/day. Mixed results were obtained for tests of potential cage artifacts and the influence of handling. Caging and differing amounts of handling did not appear to influence growth, but there was evidence that cages and handling influenced bivalve condition and number of mortalities. These direct tests appeared to be the most appropriate method for determining growth rates of this species, since attempts to analyse length-frequency data were made difficult by the apparent convergence of cohorts, and shell aging is difficult due to the thin, fragile nature of the shell. As expected, mass mortalities were observed during the flood of 1996, but not during the two non-flood years of 1997 and 1998. There were, however, some considerable declines in abundances at some channel elevations during the two non-flood years. However, these declines were attributable to the complete disappearance of individuals, rather than the sudden presence of numerous, recently dead individuals that typify observed declines during winter flooding. The complete disappearance of individuals suggest that S. alba may be capable of post-settlement emigration, or that they were consumed by an unknown predator. Salinity tolerance tests showed that bivalves exposed to low salinities (≤6 ppt), exhibited poorer condition and took longer to re-burrow into sediments than those exposed to greater salinities (≥14 ppt), while death of bivalves exposed to salinities ≤1 ppt occurred after 8 days of exposure. These tests provide evidence that low salinities are probably the principal cause of mass mortalities during winter flooding, although the interaction between salinity, temperature and turbidity also deserve consideration. The results of this study indicate that certain aspects of winter flooding, especially salinity, are responsible for the mass mortalities of S. alba rather than the result of a short-lived life history. I hypothesise that the survival of very young juveniles (between 0.5 and 1 mm shell length) and rapid growth rates are important features of the life history of S. alba that explain its successful persistence within the Hopkins River estuary. The rapid rates of growth suggest that it may be possible for juveniles that survive winter flooding to grow, reach sexual maturity, and reproduce before the onset of the next flood event. Unfortunately, the increased survivorship of juveniles during periods of winter flooding was not demonstrated by this study because of the absence of winter flooding and also relatively poor recruitment. It is highly likely that this species is capable of completing it entire life cycle within the estuary since the absence of other nearby populations, together with periods of mouth closure, are likely to greatly limit the potential contribution made by larvae entering from the surrounding marine environment. This study has added considerably to our knowledge of how infauna cope with life in the intermittently closing estuaries that typify semi-arid coastlines in the Southern Hemisphere.

Policy, practice and purpose in the field of education : a critical review

This paper provides a critical review of papers in this special issue on Bourdieu and practice. What is different about this collection is that, in analysing policy and practice through a Bourdieusian lens, the thinking tools of field, disposition (collective and individual), logics of practice and doxa have been mobilised with regard to the social practices of educational policy - its production, circulation and reception. First, these papers illustrate how, as a field, education has its own language, boundaries and power relations informed by particular modes of distinction and legitimation around different forms of capital formation, thus providing explanations for both social mobility and social stratification. Second, this collection foregrounds 'policy as practice' in terms of the social practices involved in the production of policy, the practices involved with the articulation and vernacularisation of policy through the processes of its reception, as well as the intent and effects of policy changing practice. Third, in focusing on specific policy problematics in higher education and schools, teacher professional development, leadership and educational reform, these contributions illustrate multiple methodological approaches as to how Bourdieu's thinking tools can be used to theorise educational policy, change, practice and effects. The value of Bourdieu's work lies on getting past the impasses between divisions between material and cultural analyses, between the materialist and linguistic focus, by talking about social practices, what people are doing, how they are thinking and how they are acting.

Who benefits most from participating in chronic disease self-management programs?

Objectives: To quantify the benefits that people receive from participating in self-management courses and identify subgroups that benefit most.
Research Design: People with a wide range of chronic conditions attending self-management courses (N=1,341 individuals) were administered the generic Health Education Impact Questionnaire (HEI-Q). Data were collected before the first session (baseline) and at the end of courses (follow-up) resulting in 842 complete responses. The median (interquartile range) age was 64 (54 to 73) years and most participants were female (75%). Outcomes were categorized as Substantial improvement (Effect Size, ES ≥ 0.5), Minimal/No change (ES -0.49 to 0.49) and Substantial decline (ES ≤ -0.5).
Results: On average, one third of participants reported substantial benefits after attending a self-management course. Proportions of participants reporting substantial benefits ranged from 49% in Skill and technique acquisition to 27% in Health service navigation. Stratification by gender, age and education showed that younger participants were more likely to benefit, particularly young women. No further subgroup differences were observed.
Conclusions: Given that the health of people with chronic diseases tends to decline, this evaluation is reassuring in that about one third of participants coming from a wide range of backgrounds receive substantial improvements in their self-management skills.

The principles of learning and teaching (PoLT)

In Victoria, Australia, under the Blueprint agenda, The Principles of Learning and Teaching (Department of Education and Training, 2005) are being used to operationalise pedagogical change and curriculum renewal. The University of Melbourne is one of the three contracted providers and in 2005 and 2006 has supported 450 teachers from state, independent and special schools in Victoria and 70 teachers in Singapore. The paper outlines the workings of the model and illustrates how through a deeper and renewed focus on pedagogy schools are being asked to examine and change their practice for all students. One benefit of the initiative is that special schools are an integral part of the cluster network and are reconsidering their role in school renewal and systems transformation more broadly. However the regime of pedagogical renewal must be understood as part of the past and the present, multiple transgressions and intense struggles in reform practices more broadly. None the least being the persistent stratification of schooling into special and regular in the Victorian context and professional learning being constructed as weak professional socialization. Working visually and reading intertextually undoing some of the problematics of the implementation process the challenges of system wide professional learning and curriculum reform are exposed.

The self-assembled monolayer modification of electrodes - some recent advances in biological application

The modification of an electrode surface at the molecular level using the technique of depositing self-assembled monolayers (SAM) is a typical example of the techniques used in nanotechnology, from the process "bottom up", which is to create a nanostructure by successive additions of molecular or atomic entities on a surface. This article presents some recent advances in the field, with examples: the development of systems Sat hybridized with biomolecules, nanoparticles or nanotubes in bioelectronics, the use of switchable electrodes to study the adhesion and migration of biological cells , and the integration of molecular son in the SAM to recognize and allow the transduction of a biological response allowing the practice of electrochemistry in a complex biological environment.

A role for the DRD4 exon III VNTR in modifying the association between nicotine dependence and neuroticism

Introduction: Neurotic psychopathology has been extensively examined as a risk factor for nicotine dependence (ND). Genetic stratification may partially explain variability in risk estimates. Genetic variants that compromise dopaminergic neurotransmission may motivate exposure to dopamine-stimulating agents, including nicotine. The 7-repeat allele of a Variable Number Tandem Repeat (VNTR) polymorphism in DRD4 (and evolutionary derivatives 5, 6, and 8 repeats; 7R+) is associated with reduced dopamine receptor function. The purpose of this study was to examine association between both smoking initiation (SI) and progression to ND by young adulthood and (a) history of neuroticism during adolescence, (b) DRD4 7R+, and (c) interaction between neuroticism and DRD4 7R+.

Methods: Participants were drawn from the Victorian Adolescent Health Cohort Study, a longitudinal study of the health and well-being of young Australians across 8 waves (14–24 years). Neuroticism was measured at Waves 3 and 6 (mean 15.9 and 17.4 years). SI was defined as any smoking at any wave. ND was measured at Wave 8 (mean 24.1 years). Genotype data for the DRD4 VNTR were available for 839 participants.

Results: While adolescent neuroticism was associated with SI, evidence for association with progression to ND was weak. However, there was evidence of interaction between neuroticism and DRD4 7R+: The odds of progression to ND among those with a history of neuroticism were more than 3.5-fold higher among 7R+ carriers.

Conclusions: Without considering stratification by 7R+, the association between progression to ND and neuroticism would have been assumed barely significant. However, among those carrying DRD4 7R+, risk of progression was considerably intensified.

Association between the COMT Val158Met polymorphism and propensity to anxiety in an Australian population-based longitudinal study of adolescent health

Objectives: Catechol-O-methyltransferase plays a central role in the metabolism of biogenic amines such as norepinephrine, dopamine and serotonin. Functional studies have demonstrated a dose relationship between Val158Met genotypes and catechol-O-methyltransferase activity. Compared with the Val158Val genotype, the Val158Met and Met158Met genotypes result in two- and four-fold reductions in catechol-O-methyltransferase activity, respectively. Two recent reports have observed the association between the Met158Met genotype and risk of anxiety in adult populations. We examined the association between the Val158Met genotypes and propensity to anxiety across adolescence.

Methods: Participants were drawn from an eight-wave study of the mental and behavioural health of over 2000 young Australians followed from 14 to 24 years of age (Victorian Adolescent Health Cohort Study, 1992 to present). DNA was received from 962 participants using a cheek swab collection method.

Results: The odds of reporting persistent episodic anxiety (phobic avoidance, panic attacks) were doubled among carriers of the Met158Met genotype (odds ratio 2.0, 95% confidence interval 1.1-3.4, P=0.014). A dose relationship between additional copies of the Met158 allele and persistent episodic anxiety was also observed (1.5, 1.1-1.94, P=0.007). Stratification by sex showed that the risk effect of the Met158 allele was among females only. No association was observed for measures of neuroticism, persistent generalized anxiety, or a composite measure of psychiatric distress.

Conclusion: These data replicate previous findings suggesting association between the Val158Met polymorphism and specific expressions of anxiety among females.

Early intervention with erythropoietin does not affect the outcome of acute kidney injury (the EARLYARF trial)

We performed a double-blind placebo-controlled trial to study whether early treatment with erythropoietin could prevent the development of acute kidney injury in patients in two general intensive care units. As a guide for choosing the patients for treatment we measured urinary levels of two biomarkers, the proximal tubular brush border enzymes γ-glutamyl transpeptidase and alkaline phosphatase. Randomization to either placebo or two doses of erythropoietin was triggered by an increase in the biomarker concentration product to levels above 46.3, with a primary outcome of relative average plasma creatinine increase from baseline over 4 to 7 days. Of 529 patients, 162 were randomized within an average of 3.5 h of a positive sample. There was no difference in the incidence of erythropoietin-specific adverse events or in the primary outcome between the placebo and treatment groups. The triggering biomarker concentration product selected patients with more severe illness and at greater risk of acute kidney injury, dialysis, or death; however, the marker elevations were transient. Early intervention with high-dose erythropoietin was safe but did not alter the outcome. Although these two urine biomarkers facilitated our early intervention, their transient increase compromised effective triaging. Further, our study showed that a composite of these two biomarkers was insufficient for risk stratification in a patient population with a heterogeneous onset of injury.

Cervical screening in Australia 2002–2003

The report presents most recent information on participation in cervical screening, rate of early re-screening, low-grade and high-grade abnormalities detected, incidence of cervical cancer and mortality. Analyses of incidence and mortality data by location (major cities, regional and remote) as well as mortality by Indigenous status are also presented. Where possible, data are presented by state and territory stratification.

Cervical screening in Australia 2000–2001 and 1999–2000

This is the third annual report based on key program activity, performance and outcome indicators to monitor the achievements of the National Cervical Screening Program. The report provides a comprehensive national picture of cervical screening in Australia for 2000-2001 and 1999-2000. The report presents most recent information on participation in cervical screening, rate of early rescreening, low-grade and high-grade abnormalities detected, incidence of cervical cancer and mortality. Analysis of incidence and mortality data by location (rural, remote and metropolitan) as well as mortality by Indigenous status are also presented. Where possible, data are presented by state and territory stratification.