The spatially controlled synthesis of poly(glycidyl methacrylateco-ethylene dimethacrylate) monolithic stationary phases in polyimide coated fused silica capillaries by visible light induced radical polymerisation using a three-component initiator and a 660 nm light emitting diode (LED) as a light source is presented here.

A detailed search for coincident pulses has been made of VHF radio recordings taken at widely spaced stations around the times of 19 celestial '")'-ray bursts between 1970 and 1973. No coincident pulses were found above a sensitivity level of the order of 10-12 ergs cm-2 (event)-1 in a 1-MHz bandwidth.

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Preliminary observations have been carried out to look for radio signals associated with gravitational waves. Although inconclusive, the observations from five receivers in the British Isles suggest the value of pressing on with further experiments.

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