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Nd-Fe-B sintered magnets are widely used in many applications. However, for the use in motors for hybrid electric vehicles (HEV), the development of Dy-free or Dy-lean Nd-Fe-B sintered magnets with high coercivity is desirable. Decreasing grain size of the Nd2Fe14B phase is an established method for increasing coercivity of Nd-Fe-B sintered magnets. We decreased the size of jet-milled powder to around...
A planar antenna fed by an over-sized hollow metal waveguide, whose top plane consists of slit array etched on a copper-coated dielectric substrate, has been proposed at 60GHz band. We tried to make a uniform aperture distribution on the slit array to improve the antenna efficiency. The gain was not however increased and the radiation pattern was degraded compared with that based on the Kirchhoff's...
A transition between an LSM-NRD guide and a coaxial cable was designed and fabricated at 59 GHz. Main emphasis was placed on a simple and rigid structure. Moreover, a technique to suppress unwanted radiation generated at slightly-asymmetrical structure was installed in this transition, and thus a low loss transformer whose insertion loss was measured to be less than 0.2 dB was successfully fabricated.
Electrocardiogram (EKG) and Electroencephalogram (EEG) are widely used for kinds of disorders detection. In case of EKG, RR interval series is used for heart rate variability (HRV) analysis, which is a reliable reflection of status of autonomic nervous system. HRV is a function of both physical and mental activity. In order to analyze the influence of metal stress on HRV, EKG signals including information...
When a pantograph mechanism arranged along a horizontal plane is applied to a micromanipulator, the output point of the pantograph mechanism has a vertical output displacement error based on the weight of the end effector. In this research, the output displacement of the output link of the pantograph mechanism arranged along a horizontal plane is measured when the perpendicular direction static load...
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