The value of circles and the dangers of straight lines

This article focuses on how respectful learning relationships based on reciprocity between a Anglo-western raised educator and South Sudanese Australian students and graduates in social work and welfare courses in a regional location have (re)shaped the development of a research process. A reflective critique is intertwined with a description of my search (as an experienced practitioner but new researcher) for an appropriate ethical cross cultural framework for researching and advocating with a small ethnic population in a regional location. This includes a description of the process of exploring the need for, and positioning of, changing and re-creating relationships between the ‘researcher(s)’ and the ‘researched’ as co-authors; co-researchers; collaborators and participants to address issues of selfdetermination and power in the context of cross cultural research, education and human rights. The motivation to research seems a pivotal part of ethics in cross cultural research. As an educator I became concerned that the courses I taught in, and my own teaching practices, were (unintentionally) discriminatory. There appeared to be a lack of acknowledgement and/or action regarding the ingrained Western whiteness permeated and privileged knowledge and approaches in the construction and delivery of courses. I did not think I was adequately responding to, recognising or incorporating the different knowledge’s, strengths and needs of South Sudanese Australian students and graduates. There was a lack of fit between the academic rhetoric of human rights and diversity and my/our educator practice. This article explores the ‘corralling’ effect of mainstream research culture with attention to its potential for seduction and corruption that tends to separate the passion from the researcher, the researcher from the researched, and the actual issue(s) of concern ….from everyone.

Wallace lines in eastern Gondwana : palaeobiogeography of Australasian permian brachipoda

The present Australian continent was a major component of the north eastern peninsula of Gondwana, itself the southern region of Pangaea, during the Permian period. Surrounding what is now Australia, were additional elements of north eastern Gondwana that are now incorporated into the tectonically complex regions of New Zealand, New Caledonia, the island of New Guinea, Timor, south east Asia, the Himalaya and southern Tibet. India was to the west and south west and Antarctica to the south. Marine water temperatures ranged from cold to temperate and tropical as Permian global climates ameliorated, global surface ocean circulation systems warmed, and due to rifting and northward drifting of some terranes.

Provincialism of global marine faunas was pronounced during the Permian and hence refined biostratigraphical correlations are often fraught with difficulty. The 'middle' Permian stratotypes approved by the International Subcommission on the Permian System have little direct relevance to correlations within the Gondwanan Region at the level of operational biostratigraphical zonal schemes. Brachiopoda are a dominant marine benthonic faunal element of Permian Gondwanan faunas and they provide refined correlations between marine basins within a specific faunal province. Modem faunal provinces are recognised by the distribution patterns of species and genera belonging to a single family or superfamily such as the Papilionoidea within the Insecta. This review provides an example from Permian Brachiopoda, using the distribution data of genera and subgenera of the superfamily Ingelarelloidea, in order to demonstrate the ability to define provinces and their 'Wallace lines' of demarcation between provinces in the geological past.

Synergistic antiproliferative action of the Flavonols Quercetin and Kaempferol in cultured human cancer cell lines

The consumption of vegetables containing the flavonols quercetin and kaempferol reduces the risk of cancer. We utilized human gut (HuTu-80 and Caco-2) and breast cancer cells (PMC42) to show the synergistic effect of quercetin and kaempferol in reducing cell proliferation. A trend in reduction of total cell counts was seen following a single exposure, a 4-day exposure or a 14-day exposure to quercetin and kaempferol. Combined treatments with quercetin and kaempferol were more effective than the additive effects of each flavonol. The reduction in cell proliferation was associated with decreased expression of nuclear proliferation antigen Ki67 and decreased total protein levels in treated cells relative to controls. In conclusion, the synergistic antiproliferative effect of quercetin and kaempferol demonstrated in cultured human cells has broad implications for understanding the influence of dietary nutrients in vivo, where anticancer effects may be a result of nutrients which act in concert.

Multiple lines of evidence for the beneficial effects of environmental flows in two lowland rivers in Victoria, Australia

The aim of this study was to identify whether environmental flows released into two lowland rivers (the Glenelg and Wimmera Rivers, western Victoria, Australia) during the spring to autumn period had successfully ameliorated the negative effects of multiple human impacts. Macroinvertebrates and a range of physico-chemical variables were sampled from three reaches in each river. Both rivers were sampled during three environmental release seasons with average-sized releases (1997-1998, 1998-1999 and 2001-2002) and two drought seasons with limited releases (1999-2000 and 2000-2001). The effects of releasing average-sized environmental flows on macroinvertebrates and physico-chemical variables were assessed by comparison with data from the two drought seasons. For the Glenelg River, data from a reference season prior to the release of environmental flows (1995-1996) was also compared to data from the five environmental flow seasons. Multivariate analyses revealed four pieces of evidence indicating that the release of environmental flows effectively slowed the process of environmental degradation in the Glenelg River but not in the Wimmera River: (1) the magnitude of the river discharge was dependent on the size of environmental flow releases; (2) in the Wimmera River, water quality deteriorated markedly during the two drought seasons and correlated strongly with macroinvertebrate assemblage structure, but this was not observed in the Glenelg River; (3) the taxonomic composition of the macroinvertebrate assemblages among contrasting flow release seasons reflected the severe deterioration in water quality of the Wimmera River; (4) despite two drought seasons with minimal environmental flow releases, the macroinvertebrate assemblage in the Glenelg River did not differ from the average-release seasons, nor did it return to a pre-environmental flows condition. Therefore, it appears that environmental flow releases did sustain the macroinvertebrate assemblage and maintain reasonable water quality in the Glenelg River. However, in the Wimmera River, release volumes were too small to maintain low salinities and were associated with marked changes in the macroinvertebrate assemblage. Therefore, there are multiple lines of evidence that environmental flow releases of sufficient magnitude may slow the process of degradation in a regulated lowland river.

Antioxidant defences and homeostasis of reactive oxygen species in different human mitochondrial DNA-depleted cell lines

Three pairs of parental (ρ+) and established mitochondrial DNA depleted (ρ0) cells, derived from bone, lung and muscle were used to verify the influence of the nuclear background and the lack of efficient mitochondrial respiratory chain on antioxidant defences and homeostasis of intracellular reactive oxygen species (ROS). Mitochondrial DNA depletion significantly lowered glutathione reductase activity, glutathione (GSH) content, and consistently altered the GSH2 : oxidized glutathione ratio in all of the ρ0 cell lines, albeit to differing extents, indicating the most oxidized redox state in bone ρ0 cells. Activity, as well as gene expression and protein content, of superoxide dismutase showed a decrease in bone and muscle ρ0 cell lines but not in lung ρ0 cells. GSH peroxidase activity was four times higher in all three ρ0 cell lines in comparison to the parental ρ+, suggesting that this may be a necessary adaptation for survival without a functional respiratory chain. Taken together, these data suggest that the lack of respiratory chain prompts the cells to reduce their need for antioxidant defences in a tissue-specific manner, exposing them to a major risk of oxidative injury. In fact bone-derived ρ0 cells displayed the highest steady-state level of intracellular ROS (measured directly by 2',7'-dichlorofluorescin, or indirectly by aconitase activity) compared to all the other ρ+ and ρ0 cells, both in the presence or absence of glucose. Analysis of mitochondrial and cytosolic/iron regulatory protein-1 aconitase indicated that most ROS of bone ρ0 cells originate from sources other than mitochondria.

Pedagogy of the flesh : artaud and pedagogical fault lines

In the form of an installation, this panel will question the problems of combining the fleshiness of our bodies and the technologies of (re-)presentation in the production of knowledge that is contemporary teaching in a material environment. Do the aesthetics and methods of the performing arts open up new, dynamic approaches towards teaching practices? Conversely, how do traditional approaches to classroom management and learning undermine the performativity of our disciplinary concerns? We wish to challenge in the strongest possible terms the appropriateness of the traditional format for academic conferences with their monologic presentation of research outcomes. We crave new and unimagined formats for conferences that rely upon the very theatrical devices that we study, master, enact, and live through. This installation will express each participant's response to these provocations and will provide an interactive environment with many dialogic elements. Participants will use video images, live performers, and other theatrical devices to create an installation that deconstructs the experience of teaching. Signalling though the flames, should our teaching be any less?

The installation will be available for perusal as five simultaneous events occur in over-lapping space. This will last approximately 45 minutes and will be followed by a round-table discussion for the remainder of our time.

Straight to the source : an exploratory study of Australia's regional newspaper journalists' checks on validity and accuracy of sources

This paper reports on an exploratory study that examined whether journalists
undertake the vital role of checking the validity and accuracy of information
supplied to them in media releases. It also monitored how much information
journalists used from press releases in their published work. The study followed Gandy's information subsidy theory by surveying 10 local government media relations officers who regularly issued media releases via
electronic mail or facsimile to a sample of 14 rural/regional newspapers. The data analysed found that rural/regional journalists were not adequately verifying information supplied in media releases and using a significant amount of this information verbatim.