Magnetotactic bacteria used to generate electricity based on Faraday's law of electromagnetic induction

2018 ◽  
Vol 66 (5) ◽  
pp. 362-367 ◽  
Author(s):  
B.A. Smit ◽  
E. Van Zyl ◽  
J.J. Joubert ◽  
W. Meyer ◽  
S. Prévéral ◽  
...  
Keyword(s):  
Electromagnetic Induction ◽  
Magnetotactic Bacteria ◽  
Faraday’S Law

Experimental Investigation of Effectiveness of Smart Passive System for Seismic Protection of Building Structures

2008 ◽  
Vol 56 ◽  
pp. 355-362
Author(s):  
Hyung Jo Jung ◽  
Dong Doo Jang ◽  
Heon Jae Lee ◽  
Seok Jun Moon
Keyword(s):  
Electromagnetic Induction ◽  
Mr Damper ◽  
Shaking Table ◽  
Frame Structure ◽  
Seismic Protection ◽  
Semiactive Control ◽  
Building Structures ◽  
Passive System ◽  
Engineering Structures ◽  
Faraday’S Law

The newly developed smart passive system is based on a magnetorheological fluid (MR) damper, which is one of the most promising semiacitve control devices, and an electromagnetic induction (EMI) part, which is a power harvesting device from vibration of a structure according to Faraday’s law of electromagnetic induction. Numerical simulations recently conducted by the authors have verified that the smart passive system could be effective to reduce the structural responses in the cases of civil engineering structures such as buildings and bridges. On the other hand, the experimental validation of the system is not sufficiently carried out yet. In this study, therefore, a series of shaking table tests are conducted to experimentally investigate the effectiveness of the smart passive system for seismic protection of building structure. The model structure is a scaled six-story frame structure with the height of 3.5 m and the weight of about 8 ton. The smart passive system is installed between its base floor and the first floor. The responses of the structure are measured under several ground motions including scaled historic earthquake records. The preliminarily experimental results in the smart passive system case are compared with those in the MR damper-based semiactive control cases.

scholarly journals Electromagnetic induction noise in a towed electromagnetic streamer

Geophysics ◽  
2016 ◽  
Vol 81 (3) ◽  
pp. E187-E199 ◽  
Author(s):  
Axel Tcheheumeni Djanni ◽  
Anton Ziolkowski ◽  
David Wright
Keyword(s):  
Magnetic Field ◽  
Noise Level ◽  
Electromagnetic Induction ◽  
Uniform Magnetic Field ◽  
Wave Motion ◽  
Current Flow ◽  
Constant Current ◽  
Simple Analysis ◽  
Faraday’S Law ◽  
Neutrally Buoyant

We have examined the idea that a towed neutrally buoyant electromagnetic (EM) streamer suffers from noise induced according to Faraday’s law of induction. A simple analysis of a horizontal streamer in a constant uniform magnetic field determined that there was no induction noise. We have developed an experiment to measure the induced noise in a prototype EM streamer suspended in the Edinburgh FloWave tank, and we subjected it to water flow along its length and to waves propagating in the same direction, at 45° and 90° to the streamer direction. The noise level was found to increase with increasing flow velocity. The motion of the prototype EM streamer in response to parallel constant current flow and wave motion was found to generate significant noise. The main finding is that wave motion was the major source of noise and was much larger than the noise of a static cable. The noise level can probably be reduced by towing the cable deeper and increasing the cable tension.

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