Monthly Archives: June 2018

Contrast Differences Between Nitrogen and Helium Ion Induced Secondary Electron Images Beyond Instrument Effects

The gas field ion source (GFIS) is able to generate tightly focused ion beams, which can be used to image or modify a specimen. Among the beam species, helium offers extremely high resolution, however, low sputter yield and sub-surface bubble … Continue reading

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Helium Dilution

In some instances, the helium dilution study is used to evaluate lung volumes instead of the body box. It requires quiet breathing on a mouthpiece for 3-5 minutes followed by a full inspiration and expiration. This test may not provide … Continue reading

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Non-equilibrium Thermodynamical Description of Superfluid Transition in Liquid Helium

In previous papers a phase field model for λ–transition in 4He was proposed, which is able to describe the influence of the heat flux on the temperature transition. The model presented here generalizes previous results taking into account of a … Continue reading

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Do Helium-filled Hard Drives Have A Lower Failure Rate?

Helium-filled hard drives offer improved power efficiency and increased density compared to air-filled hard drives. But what’s the failure rate like for these drives? Helium-filled hard drives are now all the rage. But how does their reliability stack up compared … Continue reading

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Ipswich To Follow Brisbane In Banning Plastics At Council Events

Springfield Lakes Nature Care president Luise Manning has praised Ipswich City Council’s proposal to ban helium balloons, single-use straws and water bottles. The council will decide on the new policy in July and if approved the plastics would be ditched … Continue reading

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