Abstract: A harness (1; 33) for supporting a fractured clavicle, the harness comprising a first part (3; 35) that is securable about the waist of a user and extends in use to cover at least a portion of the user's back, and first and second straps (13, 15; 39, 41) secured to that portion of the first part (3, 35) that covers at least a portion of the user's back in use, wherein the first and second straps (13, 15; 39, 41) are capable of begin looped over the user's shoulders, under the user's arms and can be secured in position, and at least one of said first and second straps includes a support member (19; 45) that is configured to locate beneath at least part of the fractured clavicle to support and align the component parts of the fractured clavicle whilst the clavicle heals.

Abstract: A harness (1; 33) for supporting a fractured clavicle, the harness comprising a first part (3; 35) that is securable about the waist of a user and extends in use to cover at least a portion of the user's back, and first and second straps (13, 15; 39, 41) secured to that portion of the first part (3, 35) that covers at least a portion of the user's back in use, wherein the first and second straps (13, 15; 39, 41) are capable of being looped over the user's shoulders, under the user's arms and can be secured in position, and at least one of said first and second straps includes a support member (19; 45) that is configured to locate beneath at least part of the fractured clavicle to support and align the component parts of the fractured clavicle whilst the clavicle heals.

Abstract: A detector for a first continuous-wave-modulation signal is supplied an unmodulated carrier signal in addition to the first continuous-wave-modulation signal. Means are provided for modulating the unmodulated carrier signal responsive to output signal from the detector to generate a second continuous-wave-modulation signal encoding a previous value of output signal, as delayed to provide a predicted input signal, in the same way the first continuous-wave-modulation signal encodes the input signal. The first and second continuous-wave-modulation signals are linearly combined so as to cancel the correlated portions of them and to develop a third continuous-wave-modulation signal with suppressed carrier, which is detected to recover an error signal. This error signal is combined with the predicted input signal obtained by delaying a previous value of said output signal, thereby to generate the current output signal of the detector.

Abstract: A laser has been made using a Nd.sup.3+ -doped fluoro-zirconate heavy metal fluoride (HMF) glass multimode fiber which lases in a range equal to or greater than 1.32 micrometers. The fiber laser was made for forming a glass fiber from a core glass composition comprising 52.8 mole % ZrF.sub.4, 19.9 mole % BaF.sub.2, 2.5 mole % LaF.sub.3, 3.0 mole % AlF.sub.3, 19.9 mole % NaF, 0.4 mole % InF.sub.3, and 1.5 mole % NdF.sub.3 the active dopant and the composition of the cladding glass comprises 39.6 mole % ZrF.sub.4, 17.9 mole % BaF.sub.2, 4.0 mole % LaF.sub.3, 3.0 mole % AlF.sub.3, 21.9 mole % NaF, 0.4 mole % InF.sub.3, and 13.2 mole % HfF.sub.4.