Abstract: A mobile device case has a case configured to receive a mobile device and a wrist system configured for attachment to a wrist of a user. The case is selectively removable from the wrist system.

Abstract: An optical diffuser (1) including a fiber-optical piece comprising: a first face (2) and a second face (3); a plurality of substantially parallel optical fibers (4) each extending along a respective optical axis (13) from an input end of the optical fiber exposed at the first face of the fiber-optical piece to an output end of the optical fiber exposed at the second face of the fiber-optical piece; an input optical diffraction grating (10A) positioned adjacent to the first face of the fiber-optical piece to extend over at least a part thereof such that light diffracted by the input optical diffraction grating is directed into optical fibers of the plurality of optical fibers in a direction oblique to said optical axes.

Abstract: A mobile device case has a case configured to receive a mobile device and a wrist system configured for attachment to a wrist of a user. The case is selectively removable from the wrist system.

Abstract: A system for determining a quota comprises an input interface, a candidate quota determiner, one or more quota modification determiners, and an output interface. The input interface is for receiving a quota request for an activity and receiving an estimation or an actual measurement of one or more operating parameters. A candidate quota determiner is for determining a candidate quota amount based at least in part on candidate quota parameters. The one or more quota modification determiners are for determining one or more quota modifications based on the estimation or the actual measurement of the one or more operating parameters. The output interface for providing a final quota amount based at least in part on the candidate quota amount and the one or more quota modifications.

Abstract: A disposable immunodiagnostic test system tests for marker proteins in a sample and includes intimately contacting passage, protein, and absorbent layers. The passage layer is non-porous and has an aperture therethrough. The protein layer is porous, has combinable proteins immobilized thereon, and enables passage of the sample therethrough. The protein layer has an active surface aligned with the passage layer aperture. The sample is introduced onto the protein layer through the passage layer aperture. In positive results, the marker proteins are bound to the combinable proteins and immobilized relative to the protein layer. In negative results, the sample passes through the protein layer, and is absorbed by the absorbent layer. A housing may also be provided, as may a wash structure. The system may be constructed of combustible materials that produce non-toxic by-products upon incineration, preferably enabling ecologically responsible disposal after diagnostic use of the system.

Abstract: A method of obtaining positional information about individual wireless devices a1-a16, r1-r125 within a wireless ad-hoc network including a plurality of position determining devices r1-r125 which include means for estimating the distance between themselves and other similar devices which are within range.

Abstract: Cannabis is a narcotic substance derived from the hemp plant (Cannabis indica or Cannabis sativa), and a range of derivatives and extracts are known. An aerosol of cannabis can be made by vaporising cannabis at an elevated temperature, causing the cannabis vapour to flow to a region at lower temperature at which the vapour would be supersaturated, generating seed nuclei of particle size less than 0.5 ?m, and mixing the seed nuclei with the vapour. Heterogeneous nucleation occurs due to the seed nuclei, so that droplets of a desired diameter and concentration can be obtained. The seed nuclei may for example be derived by passing air over molten sodium chloride.

Abstract: The present invention provides an emergent network that is autonomous at the service level. Network nodes have policies that enable them to process different types of service requests, with the processing earning the nodes ‘rewards’. Successful nodes can pass some or all of their policies to other nodes using the evolutionary biology of bacteria as a model.

Abstract: There is disclosed herein a single use syringe (1) having a container section (2), a valve section (4) and a hollow needle (4a). The valve section (4) contains a one-way valve (40) which allows fluid to flow in only one direction through the valve section (4). The single use syringe (1) may also be provided with locking means to prevent the separation of the container section (2) from the valve section (4). There is also disclosed herein packaging (16, 17) and a carry case (10, 11) in which to store and transport the single use syringe (1).

Abstract: An optical system comprising three lenses concentrically housed in a frame is aligned with a screen on which a televisual image of a virtual reality application is displayed. The compact and high power lenses permit the eye of a viewer when placed at eye position to have a wide field of view of the magnified virtual image of the screen. To train the eye of the user along the optical axis of the system the lenses vignette the image on the screen when the eye is not closely aligned with the axis. By plastics moulding one or more of the lenses so that they are of truncated form it is possible for injection points of the mould to be adjacent truncated side faces thereby permitting a balanced generally free flow of material through the mould cavity which results in minimal optical stresses in the finished lens.

Abstract: A head mounted display for use in virtual reality applications and typically in the form of a slim visor is provided with binocular magnifying optics which permit the binocular viewing of an image displayed by a single miniature LCD video screen magnified at infinity focus at left and right exit pupils. A vertically offset beamsplitter is provided having two elements being substantially mutually perpendicular planar semi-reflecting mirrors disposed respectively above or below the horizontal optical axis of the LCD. A single image viewed from the LCD passes through the semi-reflecting mirrors to be reflected off a concave mirror. One reflection part of the image is reflected off one of the elements and then by a right hand fold mirror towards the right hand exit pupil. Another part of the image is similarly reflected off another of the elements and left hand fold mirror towards the left hand exit pupil.