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pro vyhledávání: '"Y. Nikawa"'
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Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 48:1783-1788
In order to diagnose dental caries noninvasively, the transmission coefficient of the dental caries is measured and compared to that of a sound tooth. It has been revealed that dental caries are significantly more lossy than a sound tooth in millimet
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 46:834-838
This paper presents applications of microwaves and millimeter waves for the characterization of teeth. This is done by measuring the complex permittivity over the frequency range from 0.04 to 40 GHz. These measurements have revealed that dental carie
Publikováno v:
Journal of Oral Rehabilitation. 21:585-594
Summary Effects of soft lining materials on the growth and/or acid production of Candida albicans were investigated using a simplified method monitoring the pH change in the growth medium. Reverse sigmoidal pH curves were observed with all samples an
Autor:
S. Mizushina, H. Kanai, M. Miyakawa, Y. Amemiya, Sunao Egawa, Iwao Tsukiyama, Y. Nikawa, Yasuhiko Saito, T. Yamashita, Makoto Kikuchi, H. Kato, J. Matsuda, Masahiro Hiraoka, Y. Onoyama
Publikováno v:
International Journal of Hyperthermia. 9:341-360
Publikováno v:
International Journal of Hyperthermia. 6:671-684
To attain deep and localized heating for hyperthermic treatment of cancers, metal plate lens applicators that can converge microwave electromagnetic (EM) energy in the lossy medium such as human muscle with a computer-controlled heating system have b
Publikováno v:
AMPC Asia-Pacific Microwave Conference.
A newly developed flexible spiral applicator, which realize wide band operation, is presented to achieve microwave heating for hyperthermia. The heating pattern of the applicator can be controlled by changing the applied frequency. The experimental r
Publikováno v:
AMPC Asia-Pacific Microwave Conference.
Characteristics of low loss ceramic compact loaded traveling-wave resonator[ 11 are discussed from a viewpoint of ceramic compact complex dielectric constant which is &pending on the temperature. Preliminarily experimental results of sintering and jo
Publikováno v:
MTT-S International Microwave Symposium Digest.
A new type applicator for microwave hyperthermia operated at 433 MHz is proposed. This applicator, which is a waveguide array type, has a convergent effect of the electromagnetic field radiated from the applicator, and focal length of can be changeab
Publikováno v:
MTT-S International Microwave Symposium Digest.
A computer controlled microwave heating system for hyperthermia was developed with direct contact lens applicator to deposit the energy of electromagnetic field deep in human tissues. The results show that with the applicator operate at 2450 MHz, ove