As cannabis-derived products have become more available, veterinarians are seeing more cases of toxicosis. In addition, animal owners are having an increasing interest in using these products for their pets. This review looks at the situation in Europe and North America, the different types of cannabis and cannabis-derived products with historical examples of use in animals, and the cannabis industry. The existing regulatory framework for use in humans and animals as medicines and/or supplements was examined. Finally, a review of the clinical indications for which medicinal cannabis is authorised, a discussion of toxicosis, and recommendations and warnings around medical cannabis use are presented.
Whilst x-ray micro-computed tomography (CT) machines have developed into a popular laboratory tool for non-destructive 3D imaging of materials, they are not well-suited for scanning flat objects, for which there is an increasing demand. Computed laminography (CL) techniques have been developed for imaging planar samples such as fossils, paintings, printed circuit boards and composite panels. This paper is the first work demonstrating how CL may be implemented on a conventional industrial laboratory micro-CT scanner, without the need for specialist equipment. A rotary CL scan configuration (also known as tilted or oblique CT) was successfully implemented, and the projection images reconstructed using the conjugate gradient least squares (CGLS) method. Computer simulations were used to analyse the causes of image artefacts seen in the cone-beam CL reconstructions, and to devise corrections for them. The resulting laboratory CL method produces reconstructions with fewer artefacts and a more isotropic resolution compared to limited-angle scan configurations otherwise used for planar samples. This demonstrates that CL can be performed in the laboratory without specialist equipment beyond that required for standard CT.
There is a growing demand for portable telephones in the UX. In addition to the excellent but expensive service provided by the cellular telephone networks, there is a large demand for lowcost products which can provide limited coverage around a house or factory premises. The devloprnent of suitable systems to make best use of any available spectrum presents interesting technical and commercial challenges.The first generation of cordless telephones in the UK are similar to their US counterparts, using 8 channels in the 1.6 and 47 MHz bands, but must be approved to a specification which includes a requirement to provide aecurity of access to the telephone line. They must also give similar speech performance to that of a wired telephone. The specification, f i r s t published in 1982, has recently been extended t o include a requirement for continuous security handshakfng, and to allow attatchment to leaky feeder antennas.Advanced cordless telecommunications syeteme are now under atudy. These will use digital modulation, which will provide higher traffic capacity and allow the possibility of speech privacy. The specification for these second -generation CTa is now well advanced and it is expected that they will be commercially available in three years or SO.Propagation in and around buildings has been e x t e n s i v e l y measured, at 9OOMHz and 60GHz, including an investigations of diversity and the use of leaky feeders.The 175 -220 MHz band has been re -allocted for mobile systems in the UK8 athough it will continue to be used for television broadcasting in neighbouring countries. Five bands each of 1MHz bandwidth have been allocated for business cordless applications. The specifications for theee are now under discussfon. 434
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