900 resultados para Which-way experiments
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Energy harvesting devices are widely discussed as an alternative power source for todays active implantable medical devices. Repeated battery replacement procedures can be avoided by extending the implants life span, which is the goal of energy harvesting concepts. This reduces the risk of complications for the patient and may even reduce device size. The continuous and powerful contractions of a human heart ideally qualify as a battery substitute. In particular, devices in close proximity to the heart such as pacemakers, defibrillators or bio signal (ECG) recorders would benefit from this alternative energy source. The clockwork of an automatic wristwatch was used to transform the hearts kinetic energy into electrical energy. In order to qualify as a continuous energy supply for the consuming device, the mechanism needs to demonstrate its harvesting capability under various conditions. Several in-vivo recorded heart motions were used as input of a mathematical model to optimize the clockworks original conversion efficiency with respect to myocardial contractions. The resulting design was implemented and tested during in-vitro and in-vivo experiments, which demonstrated the superior sensitivity of the new design for all tested heart motions.
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Bound in green cloth; stamped in gold and blind.
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Mode of access: Internet.
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Mode of access: Internet.
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Forma parte de la obra completa: "A natural history of uncommon birds, and of some other rare and undescribed animals ..."
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A letter from Mr. Reid to Dr. Hales concerning the nature of Tar and a method of obtainig it's Medical Virtues, free from it's hurtful Oils: Whereby also the strength of each dose may be the better ascertained.
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Mode of access: Internet.
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A journal of a voyage in the sweepstakes from the Lizard las 49 55 N. Lon. 12 56 to Jamaica Lat. 180 N Long. 3017 in the year 1754, p. 131-216 ; A table of Logarithmic sines, cosines, tangents and cotangents, [120] p.
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Of benefits -- Of a happy life -- Of anger -- Epistles -- Postscript -- An after-thought.
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Description based on: 1863.
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On plates: H.G. James's Lithography, 9 Ridge Field, Manchester.
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Mode of access: Internet.
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Mode of access: Internet.
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Tributes to George II and Queen Caroline.