1,735,855 research outputs found

    Integrating photovoltaic cells into decorative architectural glass using traditonal glasspainting techniques and fluorescent dyes

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    Photovoltaic cells can be integrated into decorative glass, providing a showcase for this renewable technology, whilst assisting in the creation of sustainable architecture through generation of electricity from the building surface. However, traditional, opaque, square, crystalline-silicon solar cells contrast strongly with their surroundings when incorporated into translucent, coloured glazing. Methods of blending photovoltaic cells into their surroundings were developed, using traditional glass painting techniques. A design was created in which opaque paint was applied to the areas of glass around underlying photovoltaic cells. Translucent, platinum paint was used on the glass behind the photovoltaic cells. This covered the grey cell backs whilst reflecting light and movement. The platinum paint was shown to cause a slight increase in power produced by photovoltaic cells placed above it. To add colour, very small amounts of Lumogen F dye (BASF) were incorporated into a silicone encapsulant (Dow Corning, Sylgard 184), which was then used hold photovoltaic cells in place between sheets of painted glass. Lumogen dyes selectively absorb and emit light, giving a good balance between colour addition and electricity production from underlying photovoltaic cells. When making sufficient quantities of dyed encapsulant for a 600 x 450 mm test piece, the brightness of the dye colours faded, and fluorescence decreased, although some colour was retained. Improvement of the method, including testing of alternative encapsulant materials, is required, to ensure that the dyes continue to fluoresce within the encapsulant. In contrast, the methods of adding opacity variation to glass, through use of glass painting, are straightforward to develop for use in a wide variety of photovoltaic installations. Improvement of these methods opens up a wide variety of architectural glass design opportunities with integrated photovoltaics, providing an example of one new medium to make eco-architecture more aesthetically pleasing, whilst generating electricity

    Women's secure hospital services: national bed numbers and distribution.

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    A mapping exercise as part of a pathway study of women in secure psychiatric services in the England and Wales was conducted. It aimed to (i) establish the extent and range of secure service provision for women nationally and (ii) establish the present and future care needs and pathways of care of women mentally disordered offenders (MDO) currently in low, medium and enhanced medium secure care. The study identified 589 medium secure beds, 46 enhanced medium secure beds (WEMSS) and 990 low secure beds for women nationally. Of the 589 medium secure beds, the majority (309, 52%) are in the NHS and under half (280, 48%) are in the independent sector (IS). The distribution of low secure beds is in the opposite direction, the majority (745, 75%) being in the IS and 254 (25%) in the NHS. Medium secure provision for women has grown over the past decade, but comparative data for low secure provision are not available. Most women are now in single sex facilities although a small number of mixed sex units remain. The findings have implications for the future commissioning of secure services for women

    "This isn't the road I want to go down" Young people's perceptions and experiences of secure care

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    The consultation sought to map young people's secure journey ie. their experiences and views of secure care from admission through to final discharge, including the transition from secure care and the services they received to assist them in that transition. It centred on four broad themes intended to elicit young people's individual experiences and perceptions regarding: admission to secure care, time in secure care, exit from secure care, and reflections once left secure care

    TOR Secure Network

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    So what is TOR? TOR is an anonymity network for “silent” usage by anyone who wants to stay hidden from any other secret service etc. Does it actually work as it is supposed to do? It depends on different circumstances. TOR contains nodes, which are placed all over the globe. The nodes are needed to route user traffic flows over randomly picked rows of nodes to hide which node user is getting access to. If a bad guy can track through which node the traffic is flowing, he can compare received data and confirm what destination user is connected to
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