The walls are lined with bulky green and silver machinery, an array of knobs with buttons and switches covering every metallic surface.

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The electronic nose is an array of nano-scale gas sensors--the maximized surface area of the nano-particles allows the most gas to pass over them--along with pattern recognition technology that can create a digital fingerprint (or noseprint, as the case may be) of specific smells.

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The array itself is a steel hoop around 20 inches in diameter, the surface of its aperture teeming with rectangular rods.

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The machine that Dr O'Brien and Dr Frazier have designed to get round these constraints consists of a transmitter that sends out a pulse of sound at a frequency of 6 kilohertz, and an array of 52 receivers that collect the reflections from anything buried beneath the surface.

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At the heart of the technology is a micro-array consisting of thousands of microscopic spots of different sections of DNA deposited on a glass or silicon surface.

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It is a collaborative partnership of more than 30 nations from all continents, all working together to provide a seamless global array of over 3, 000 profiling floats moving up and down in the water column from the sea surface to 2, 000 meters and measuring temperature, salinity, and depth during every ascent to the sea surface.

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