Shigeaki Miyazaki

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We investigated the possible linkage between the crystallinity and elemental ratios (Mg/Ca and Sr/Ca) of the femoral cortical bones of rats with chronic kidney disease (CKD) or diabetes mellitus (DM). The Mg/Ca and Sr/Ca ratios were measured by using the laser ablation-inductively coupled plasma mass spectrometry (LA-ICPMS) technique and the crystallinity(More)
Thermoelectrically cooled 4 GHz band FET amplifier with noise temperature of 55K has been developed for low noise amplifier of satellite communications earth stations. In this amplifier with the FET which was developed in our company, the new design method of broadband noise matching is applied. The difference between maximum and minimum noise temperature(More)
This paper describes an Si monolithic-microwave prescaler IC with a toggle frequency of 3.9 GHz. To optimize circuit parameters and to determine the dominant transistor parameters, a precise computer simulation has been used. An improved IC manufacturing process was developed to achieve the desired parameters and to obtain a transistor cutoff frequency of(More)
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