Abstract:
The present invention provides methods for determining the likelihood and/or severity of GvHD and the likelihood of the occurrence of transplant related mortality.
Abstract:
The invention provides a wide spectrum light source comprising a housing with an aperture, said aperture adapted to emit light; and a plurality of light emitting diode (LED) sources mounted in said housing, wherein said LED sources are arranged at different heights in said housing adapted to provide efficient wide spectrum operation of said light source.
Abstract:
A heat reflection device for footwear includes a first layer of fluid-impervious material, a second layer of fluid-impervious material and a sac arranged between the first and second layers. The sac contains a heat reflective material therein. In use the device is positioned in relation to the sole of the footwear so that at least some heat conducted or converted through the sole is reflected away from the foot of the wearer of the footwear. The heat reflective material may be a mixture of heat reflective powder or particulate, thickening agent and fluid. The heat reflective powder or particulate may be one or a combination of two or more materials selected from titanium dioxide, zirconium and zinc oxide.
Abstract:
The invention provides a wide spectrum light source comprising a housing with an aperture, said aperture adapted to emit light; and a plurality of light emitting diode (LED) sources mounted in said housing, wherein said LED sources are arranged at different heights in said housing adapted to provide efficient wide spectrum operation of said light source.
Abstract:
A solar-powered lighting system suitable for signs or hoardings (10), navigation beacons or as an emergency supply for hotels, cinemas, hospitals or other services.The system incorporates solar cell arrays (17) which generate electricity which is stored in batteries (22). A sensing circuit (14) selectively connects the batteries (22) to lights (14). A timing/switching circuit (32), (32a) may be provided to selectively connect the lights (14) to a mains supply (30).
Abstract:
A method of controlling the temperature of a brake arrangement for a machine is disclosed. The method includes providing a flow of pressurized fluid to the brake arrangement and sensing a first temperature of the fluid downstream of the brake arrangement. The method also includes determining a first temperature range for the brake arrangement and determining if the first sensed temperature falls in the first temperature range. The method also includes requesting an adjustment of at least one fluid parameter of the flow of pressurized fluid in response to determining that the first sensed temperature does not fall within the first temperature range such that the sensed temperature moves to the first temperature range.
Abstract:
An illuminator (1) is manufactured by embossing an aluminium preform to provide a structured substrate base (21) with cavities (25) for LEDs and recesses (26) for tracks. The substrate is anodised to provide an aluminium oxide insulating layer (30) over the structured surface. A metal layer (35) is then applied over the insulating layer (30), and this is etched to leave metal pads in the cavities and tracks in the recesses (26). LEDs (50) are placed in the cavities and they are wire-bonded to the exposed metal tracks. This manufacturing method allows versatility in choice of configuration of 5 illuminator by simple embossing a desired substrate shape. Also, the anodisation provides an excellent and durable insulating layer, which has the major benefit of being conformal with the structured surface.
Abstract:
An embossing master (20) is produced by successively applying epoxy layers (2, 10) over a silicon substrate (1) and selectively exposing them to UV to cross-link according to a pattern. Non-exposed epoxy is developed away to leave a pattern of cured epoxy at each level. This provides a multi-level master, with a desired 3D configuration. The master (20) is then used to emboss a polymer blank to provide a substrate (80) and a different master is used to emboss a blank to provide a superstrate (90). The substrate (80) has aligned socket and channel grooves (80, 81) and the superstrate (90) has a socket groove (91). When the superstrate is mated with the substrate, there is a socket for receiving a fluidic capillary or a detection waveguide. The capillary or waveguide is aligned with the channel for optimum fluidic flow or optical detection.
Abstract:
High-power light absorbers (HPLAs) can exhibit low back-scattered light, mitigate stray light, and withstand high optical power. The absorbers can be used with or without baffling as beam dumps for high-power lasers. An HPLA may include a substrate made of high thermally conductive material with an anti-reflection (AR) coating formed on the substrate. A thin layer of highly absorbing material may be located between the AR coating and substrate. The substrate can be cooled with a fluid, such as water or air.
Abstract:
A method of controlling the temperature of a brake arrangement for a machine is disclosed. The method includes providing a flow of pressurized fluid to the brake arrangement and sensing a first temperature of the fluid downstream of the brake arrangement. The method also includes determining a first temperature range for the brake arrangement and determining if the first sensed temperature falls in the first temperature range. The method also includes requesting an adjustment of at least one fluid parameter of the flow of pressurized fluid in response to determining that the first sensed temperature does not fall within the first temperature range such that the sensed temperature moves to the first temperature range.