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Kido, Hiroyuki,Nakashima, Kenshiro,Nakahara, Masaya,Hashimoto, Jun The Korean Society of Combustion 2001 한국연소학회지 Vol.6 No.2
In order to elucidate the turbulent burning velocity of the two-component fuel mixtures, the lean and rich two-component fuel mixtures, where methane, propane and hydrogen were used as fuels, were prepared keeping the laminar burning velocity nearly the same value. Clear difference in the measured turbulent burning velocity at the same turbulence intensity can be seen among the two-component fuel mixtures with different addition rate of fuel, even under nearly the same laminar burning velocity. The burning velocities of lean mixtures change almost monotonously as changing addition rate, those of rich mixtures, however, do not show such a monotony. These phenomena can be explained qualitatively from the local burning velocities, estimated by considering the preferential diffusion effect for each fuel component. In addition, a prediction expression of turbulent burning velocity proposed for the one-component fuel mixtures can be applied to the two-component fuel mixtures by using the estimated local burning velocity of each fuel mixture.
MRI in the Diagnosis of Endometriosis and Related Diseases
Kido Aki,Himoto Yuki,Moribata Yusaku,Kurata Yasuhisa,Nakamoto Yuji 대한영상의학회 2022 Korean Journal of Radiology Vol.23 No.4
Endometriosis, a common chronic inflammatory disease in female of reproductive age, is closely related to patient symptoms and fertility. Because of its high contrast resolution and objectivity, MRI can contribute to the early and accurate diagnosis of ovarian endometriotic cysts and deeply infiltrating endometriosis without the need for any invasive procedure or radiation exposure. The ovaries, which are the most frequent site of endometriosis, can be afflicted by multiple related conditions and diseases. For the diagnosis of deeply infiltrating endometriosis and secondary adhesions among pelvic organs, fibrosis around the ectopic endometrial gland is usually found as a T2 hypointense lesion. This review summarizes the MRI findings obtained for ovarian endometriotic cysts and their physiologically and pathologically related conditions. This article also includes the key imaging findings of deeply infiltrating endometriosis.
AN ALGORITHM OF ADAPTING CONTROL OF FILTER COEFFICIENTS FOR ACTIVE NOISE CONTROL
Kido, Keniti,Itakura, Hidekiyo,Ono, Takahiko,Suzuki, Hideo 대한전자공학회 1992 HICEC:Harbin International Conference on Electroni Vol.1 No.1
A new method for formulating the algorithm of adaptive control of filter coefficients for the active noise control and system identification is introduced. The theoretical explanation is based on the principle of convolution. The result includes the LMS algorithm as a special case. The effectiveness of the algorithms introduced in this paper is confirmed by the computer simulation and the application to the duct noise suppression systems.