9 research outputs found

    Review and suggestions for upgrading StrandNet as a key element of the Reef 2050 Integrated Monitoring and Reporting Program: final report of the StrandNet team in the megafauna expert group

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    The objective of this report is to provide an overview of the present StrandNet program and suggest how it might be improved to enable the StrandNet database to function as a central component of the megafauna component of the Reef 2050 Integrated Monitoring and Reporting Program (RIMReP). The report results from a cross-sectoral, expert workshop held in Brisbane on 11 June 2018 and attended by personnel from the Great Barrier Reef Marine Park Authority, Queensland government departments of Environment and Science and Agriculture and Fisheries, James Cook University and the University of Queensland, plus subsequent input from some of the workshop attendees

    A time-dependent model for improved biogalvanic tissue characterisation

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    Measurement of the passive electrical resistance of biological tissues through biogalvanic characterisation has been proposed as a simple means of distinguishing healthy from diseased tissue. This method has the potential to provide valuable real-time information when integrated into surgical tools. Characterised tissue resistance values have been shown to be particularly sensitive to external load switching direction and rate, bringing into question the stability and efficacy of the technique. These errors are due to transient variations observed in measurement data that are not accounted for in current electrical models. The presented research proposes the addition of a time-dependent element to the characterisation model to account for losses associated with this transient behaviour. Influence of switching rate has been examined, with the inclusion of transient elements improving the repeatability of the characterised tissue resistance. Application of this model to repeat biogalvanic measurements on a single ex vivo human colon tissue sample with healthy and cancerous (adenocarcinoma) regions showed a statistically significant difference (p 0.05) between tissue types was found when measurements were subjected to the current model, suggesting that the proposed model may allow for improved biogalvanic tissue characterisation

    µAFS High Resolution ADB/AFS Solution

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    A cooperation of several research partners supported by the German Federal Ministry of Research and Education proposes a new active matrix LED light source. A multi pixel flip chip LED array is directly mounted to an active driver IC. A total of 1024 pixel can be individually addressed through a serial data bus. Several of these units are integrated in a prototype headlamp to enable advanced light distribution patterns in an evaluation vehicle

    Herstellung 3D-integrierter optischer Verbindungsmodule in Diffusionstechnik und LIGA Abschlussbericht

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    The goal of the project was the development of a technique which allows to integrate optical free space interconnections in a miniaturized form. By this three-dimensional integration optical systems can be realized in a more compact form. Thus integration densities could be achieved, which are comparable to micro-electronics. The basic elements of this integration technique are the use of a stacked-layer technique, lithography and refractive optics. For numerical simulation of the light propagation through refractive components a new method, the wave-propagation method (WPM) was developed. Compared to paraxial approximations this method allows the treatment of propagation angles up to 70 degrees. For this project three technologies have been employed: micro lenses were fabricated by ion exchange in glas. Beam splitting and beam deflecting elements were fabricated with LIGA-technique and beam forming elements have been realized by photo-polymerisation. By combining the individual component arrays a micro-optical system was demonstrated, which performs a perfect-shuffle permutation on an arry of 100 data channels within a volume of less than one mm"3. (orig.)SIGLEAvailable from TIB Hannover: D.Dt.F.QN1(14,2) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekBundesministerium fuer Forschung und Technologie (BMFT), Bonn (Germany)DEGerman
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