166,676 research outputs found

    Live birth in the Devonian period

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    Long, John A., Trinajstic, Kate, Young, Gavin C., Senden, Tim (2008): Live birth in the Devonian period. Nature 453: 650-653, DOI: 10.1038/nature0696

    Old bones, shooting stars and new technologies

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    Adelaide Festival of Ideas session, The Braggs, University of Adelaide, 13:30pm, Sunday 20th October, 2013. Hosted by Alice Gorman.Through new technologies, creative and scientific fields are coming together to shake how we look at our world. Tracking shooting stars and flying through the nostril of a 400 million- year-old fossil: bold new visions of science will take your breath away. Professors Tim Senden, Phil Bland and John Long explore how the worlds of maths, physics, biology and the movies combine to create radical new ways of understanding.Tim Senden, Phil Bland and John Longhttp://adelaidefestivalofideas.com.au

    Onset of Mechanical Stability in Random Packings of Frictional Spheres

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    Using sedimentation to obtain precisely controlled packings of noncohesive spheres, we find that the volume fraction ?RLP of the loosest mechanically stable packing is in an operational sense well defined by a limit process. This random loose packing volume fraction decreases with decreasing pressure p and increasing interparticle friction coefficient ?. Using x-ray tomography to correct for a container boundary effect that depends on particle size, we find for rough particles in the limit p?0 a new lower bound, ?RLP=0.550±0.001

    Figure 3 in Live birth in the Devonian period

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    Figure 3 | Materpiscis gen. nov. a, Diagram showing position of embryo and yolk sac within the mother. b, Artist's reconstruction of Materpiscis gen. nov. giving birth (by B. Choo).Published as part of Long, John A., Trinajstic, Kate, Young, Gavin C. & Senden, Tim, 2008, Live birth in the Devonian period, pp. 650-653 in Nature 453 on page 652, DOI: 10.1038/nature06966, http://zenodo.org/record/27009

    Do dolphins benefit from nonlinear mathematics when processing their sonar returns?

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    An interview with author Tim Leighton about the paper

    Grow: visualising nature at Nanoscale (2011)

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    variable depending on format projection, duration 2min. GROW is a project in its formative stages. Here, Erica Seccombe aims to capture the dynamic process of propagating agricultural seeds from embryo to fi rst leaf stage by visualising the process using microscopic 3D data. In essence, this work is in 4D (3D data + time). Through GROW Seccombe attempts to transcend conventional time-lapse images of seeds germinating and to create new work that has meaning beyond a purely scientifi c interpretation of data. Micro-CT can now capture movement as an object is transformed; such as a seed sprouting from an embryonic state. This data is visualised through a unique scientific volume exploration tool, Drishti. GROW: visualising nature at nanoscale (work in progress). Digital animation, QuickTime fi le, 3 mins. 3D Micro CT dataset of a sprouting mungbean, 2010. Erica Seccombe works with Associate Professor Tim Senden, Dr Andrew Kingston, Dr Ajay Limaye at the Australian National University’s Department of Mathematics, School of Physical Sciences and Engineering and the Super Computer Centre. Erica Seccombe is a 2010 Synapse Residency recipient with the Department of Applied Mathematics, Australian National University. The ANAT Synapse initiative is supported by the Australia Council for the Arts

    Tim Di Muzio on 'Sabotage'

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    In a series of essays published in 2013 and 2014 on capitaspower.com, political economist Tim Di Muzio explored the concept of ‘sabotage’ as it applies to capitalist power. I recently rediscovered these essays and was so impressed by them that I have reposted them here as a single piece. About the author: Tim Di Muzio is a researcher at the University of Wollongong. He is the author of numerous books, including Debt as power, Carbon capitalism, and The 1% and the Rest of us

    [Report to Chief J. E. Curry, by an unknown author #1]

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    Report to Chief J. E. Curry, by an unknown author. The report contains a list of officers who gave depositions to the United States Attorney

    [Report to Chief J. E. Curry, by an unknown author #2]

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    Report to Chief J. E. Curry, by an unknown author. The report contains a list of officers who gave depositions to the United States Attorney
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