Results 231 to 240 of about 883,659 (269)
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Magnetic control of a reaction path
Nature Chemistry, 2018Magnetic or electric fields have long been used to align or orient atomic or molecular species in a molecular beam. Now, experiments in a merged beam apparatus show that an external magnetic field can be used to favour one particular reaction path.
Astrid, Bergeat, Christian, Naulin
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MAGNETIC MICROTRAPS FOR QUANTUM CONTROL
International Journal of Quantum Information, 2007We will review the realization of magnetic microtraps for ultracold atoms. Such devices combine experimental simplicity with unsurpassed versatility in designing confining potentials. We will show how combining magnetic microtraps with optical lattices one can realize many possible quantum systems of interest in many fields ranging from solid state ...
I. Herrera +3 more
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On LQ-control of magnetic bearing
IEEE Transactions on Control Systems Technology, 2000Control theory gives very few examples of control systems for which the closed-form solution to the linear-quadratic (LQ) optimization problem exists. The paper describes two such systems of second- and fourth-order concerning magnetic bearings and gives the closed-form solutions to the LQ-problems.
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A magnetic amplifier frequency control
Electrical Engineering, 1950TO SUPPLY power to certain types of shipboard instruments, a source of alternating current is required in which the frequency error must be ±0.1 per cent or less over a range of temperatures, loads, and supply voltages. This need has been met by the use of small motor-driven alternators which run on the ship's d-c power supply.
L. J. Johnson, H. G. Schafer
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Controllability of Magnetic Force in Magnetic Wheels
IEEE Transactions on Magnetics, 2012Magnetic adhesion on mobile robots has advantages such as fast locomotion and no additional energy for adhesion process, and one definite disadvantage like difficulty to control magnetic force. This paper focuses on this issue, i.e., controllable magnetic force, and describes the design of a magnetic wheel using two permanent magnets (PMs) for ...
Kyung-Hyun Yoon, Young-Woo Park
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A novel control algorithm for magnetically controlled reactor
2014 IEEE 23rd International Symposium on Industrial Electronics (ISIE), 2014In order to reduce the response time and solve the problem of reactive power overcompensation of the magnetically controlled reactor (MCR), a novel compensation algorithm is proposed in this paper. The algorithm is based on the principles and algorithms of unbalanced load compensation and via modifying the compensation conditions of the Steinmetz ...
Yifan Wang, Cong Sun, Guozhu Chen
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Magnetic control ofDictyosteliumaggregation
Physical Review E, 2007We report the control of cell migration by external magnetic forces during the early stage of Dictysostelium discoideum morphogenesis. Magnetically labeled aggregating cells respond to the presence of a magnetic field created by a thin magnetic tip: forces as low as 30 pN are sufficient to elicit the aggregation of the cells at the extremity of the tip.
Wilhelm, Claire +2 more
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A magnetically controlled gating element
Papers and discussions presented at the December 10-12, 1956, eastern joint computer conference: New developments in computers on - AIEE-IRE '56 (Eastern), 1957Synopsis: A computer component based on the magnetic destruction of superconductivity has been proposed, and an information-handling system involving a large number of such elements is described in a companion paper. In this paper attention is directed toward the electrical characteristics of superconductive components. Also recently measured switching-
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Magnetic Control of Tokamak Plasmas
2008The problem of confining a plasma, with sufficiently high density and temperature, is of crucial importance if nuclear fusion is to be made usable as a form of power generation. Tokamaks – devices with a toroidal geometry – are among the most popular candidates by which such confinement can be achieved.
Ariola, Marco, PIRONTI, ALFREDO
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CONTROL OF THE MAGNETIC CONFIGURATION IN ITER
1997Note: Proc. 19th Symposium on Fusion Technology, Lisbon, Portugal, September 1996, 731 - 734 (1996) Reference CRPP-CONF-1997-058 Record created on 2008-05-13, modified on 2017-05 ...
A. Portone +18 more
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