14 resultados para U–Pb SHRIMP zircon dating

em Deakin Research Online - Australia


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The existence of an egg-laying hormone (ELH) was identified for the first time in the black tiger shrimp, Penaeus monodon, by means of immunoenzyme and immunofluorescence techniques. This was achieved using a polyclonal antibody produced against expressed recombinant ELH of the female Australian blacklip abalone, Haliotis rubra. The shrimp ELH reactive material was found to be localised within female neurosecretory tissues and the secretory tissue of the antennal gland, but was not identified in the X-organ sinus gland within the eyestalk. It was also present in the ovary, where the amount of ELH present was observed to be greatest in the period prior to spawning. These findings implied that the induction of P. monodon spawning might be involved with humoral regulation relating to ELH expression.

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In this article we address how a contemporary adaptation of the 'speed dating' model was used for educational purposes with two cohorts of social work students. We outline the dimensions of 'speed dating' as a contemporary social phenomenon, then address how this model relates specifically to groupwork process, and can be used to facilitate social work student learning. The curriculum for two classroom group activities using the 'speed dating' model are outlined, the first to develop university level study skills, the second for debriefing field placement learning experiences. Finally we examine why the 'speed dating' metaphor was successful in provoking a playful yet constructively creative space for students to engage in groupwork process.

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As published in the final reports by the College of Wooster and Sydney University, the dating and analysis of the excavated remains of the three churches and their associated finds at Pella, Jordan, display some puzzling aspects. This paper argues that, in these reports, two of the churches appear to have been dated up to a century later than they should have been, while the suggested date for the third now appears too early. This article examines the problem in the context of a new architectural and theological typology of churches in the East Mediterranean from the 4th to 6th centuries AD.

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This study investigated the possibilities of improvement in the brackish water shrimp culture industry in Sri Lanka. Feeding rates could be further reduced without negative effect on shrimp growth while improving effluent water quality. Improvements of feed quality and pond management practices were also suggested.

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Molecular genetic date was used to test the taxonomic hypothesis of a single species of the freshwater shrimp, Paratya australiensis. While the results identified significant cryptic diversity, clear species boundaries could not be defined. The results of this study defy a simple taxonomic conclusion but are suggestive of incipient speciation.

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This thesis explored the relative utility of evolutionary and ecological theories to understand under which conditions children in non-biological families are most at risk of childmaltreatment.  The study revealed that single-mothers have complex needs and stressors, which may increase their vulnerability and impact on decisions made in selection of partners.

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In 2007, I asked for a show of hands of people who ‘might consider online dating as a way of finding a partner’. Not a single hand went up and the lecture theatre was stony silent. The same question, some five years later resulted in a significant show of hands and a buzz of chatter. Something had changed and perceptions around online dating had shifted. Nielsen Research last year found most Australians (51 per cent) had either tried online dating or would consider doing so. RSVP and eHarmony claim to have 2 million members and more than 4 million people have apparently joined RSVP since it was launched 17 years ago. Online dating is experiencing significant growth in Asia as well, with the number of new web services (some, like ‘Muslima’, are tightly focused) growing exponentially. Online dating is a global phenomenon. This paper will use current media studies research literature and data from conversations with university students in Australia and Indonesia to explore how the changing world of online dating is helping/hindering young people as they shape and develop identity, represent themselves in the virtual world and ultimately, how they find love on line.

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Communication, Digital Media and Everyday Life uses stories to explain the journey from ‘new media in communication’ to ‘digital media is communication’ and provide students with a thorough introduction to communication and media theory and practice. It recognises that for generations Y and Z, ‘digital media’ is now embedded into most aspects of everyday life and integrated into contemporary communication as much as speaking, reading and writing.