The role of root exuded low molecular weight organic anions in facilitating petroleum hydrocarbon degradation: current knowledge and future directions

Rhizoremediation is a bioremediation technique whereby enhanced microbial degradation of organic contaminants occurs within the plant root zone (rhizosphere). It is considered an effective and affordable ‘green technology’ for remediating soils contaminated with petroleum hydrocarbons (PHCs). This paper critically reviews the potential role of root exuded compounds in rhizoremediation, with emphasis on commonly exuded low molecular weight aliphatic organic acid anions (carboxylates). The extent to which remediation is achieved shows wide disparity among plant species. Therefore, plant selection is crucial for the advancement and widespread adoption of this technology. Root exudation is speculated to be one of the predominant factors leading to microbial changes in the rhizosphere and thus the potential driver behind enhanced petroleum biodegradation. Carboxylates can form a significant component of the root exudate mixture and are hypothesised to enhance petroleum biodegradation by: i) providing an easily degradable energy source; ii) increasing phosphorus supply; and/or iii) enhancing the contaminant bioavailability. These differing hypotheses, which are not mutually exclusive, require further investigation to progress our understanding of plant–microbe interactions with the aim to improve plant species selection and the efficacy of rhizoremediation.

The power of the 6 three model for enhancing academic teachers' capacities for effective online teaching and learning: benefits, initiatives and future directions

To gain the full educational benefits of the major new investments in corporate technologies supporting online teaching and learning it is argued that a strategic, systems based approach to academic professional development (APD) is required. Such an approach requires a clear view of the key areas of potential and enduring teaching and learning benefit which can be realised from online developments, including an understanding of the changing role of the academic teacher in higher education, the identification of the desired professional capacities to educate online, and the implementation of a number of coordinated initiatives to develop these professional capacities in order to engage constructively with the learning and technology opportunities. Based on previous work, we propose a 6three model of Academic Professional Capacities Development for effective APD of online teaching and learning. The model can help inform the actions of policy makers, executives and practitioners in ways that promote an authentic learning organisation.

The 6 by the power of 3 model for enhancing academic teachers' capacities for effective online teaching and learning: benefits, initiatives and future directions

To gain the full educational benefits of the major new investments in corporate technologies supporting online teaching and learning it is argued that a strategic, systems based approach of academic professional development (APD) is required. Such an approach requires a clear view of the key areas of potential and enduring teaching and learning benefit which can be realised from online developments, including an understanding of the changing role of the academic teacher in higher education, the identification of the desired professional capacities to educate online and the implementation of a number of coordinated initiatives to develop these professional capacities in order to engage constructively with the learning and technology opportunities. Based on previous work, we propose a '6' by the power of '3' model of Academic Professional Capacities Development for effective APD of online teaching and learning. The model can help inform the actions of policy makers, executives and practitioners in ways that promote an authentic learning organisation.

Future directions in Australian social policy : new ways of preventing risk

Future directions in Australian social policy: new ways of preventing risk, no. 49: growth.
The papers presented in this issue of Growth aim to explore the scope for new directions in social policy in the light of critical shifts in working life, household relations and the economy.

Mother–infant psychotherapy and perinatal psychiatry: current clinical practice and future directions

Objective: To explore trends in the practice of mother-infant psychotherapy among perinatal psychiatry clinicians based in Melbourne.Methods: A cross-sectional survey with a purpose designed self-report questionnaire was used to assess the attitudes and practices of 47 perinatal and infant psychiatry clinicians in their use and understanding of mother-infant psychotherapy.Results: Seventy per cent of clinicians in this field of psychotherapy who responded to the questionnaire subscribe to a psychodynamic model, although cognitive behavioural models are also used. The interventions were mostly used in conjunction with other interventions, would be more accurately described as 'parent-infant psychotherapy', and non-psychiatrists in the area tended to be more likely to be formally trained in psychotherapy, but only 4% were formally trained in specific mother-infant psychotherapy. There was a unanimous request for further clinical training in this area.Conclusions: The emerging field of perinatal psychiatry needs to develop coherent therapeutic models and conduct outcome trials on specific interventions. Specific trainings in these models, in assessment and in diagnostic frameworks are required to enhance clinical efficacy, for research and service development purposes.