Critical care outreach team sees fall in cardiac arrests.
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Community-Institutional Relations↗
Biomedical subjects
J Rivers
Publications and source records attributed to J Rivers.
The use of male or female voices in warnings systems: a question of acoustics.
Speech warnings and communication systems are increasingly used in noisy, high workload environments. An important decision in the development of such systems is the choice of a male or a female speaker. There is little objective evidence to support this decision, although there are many misconceptions and misunderstandings on this topic. This paper suggests that both acoustic and non-acoustic differences (such as social attributions towards speakers of different sexes) between male and female speakers is negligible, therefore the choice of speaker should depend on the overlap of noise and speech spectra. Female voices do however appear to have an advantage in that they can portray a greater range of urgencies because of their usually higher pitch and pitch range. An experiment is reported showing that knowledge about the sex of a speaker has no effect on judgements of perceived urgency, with acoustic variables accounting for such differences.
Acoustics↗
The argon laser for cutaneous lesions.
A summary of the pathophysiology and clinical use of the argon laser in the treatment of cutaneous lesions is presented. The nonionizing blue-green argon laser light is absorbed by pigment, is converted to heat, and selectively destroys specific cutaneous lesions with sparing of adjacent dermal appendages and healing of the laser wound with minimal scarring. Vascular lesions (port wine hemangioma, capillary-cavernous hemangioma, telangiectasia), inflammatory lesions (pyogenic granuloma), nevoid lesions, tattoo lesions, and a variety of miscellaneous lesions have been successfully treated.
Argon↗