Development and Comparison on JIS, ADAS and ISO Standards for Dental Materials, Instruments and Equipments

Standard for dental materials and devices were specified in Japanese Industrial Standerd (JIS). Reviewing the present of international circulation for the products, the international standard (ISO) have to be evaluated as same as Japanese industrial standard. Furthermore, dental materials made in Japan were produced according as American dental associations specifications (ADAS) on friendly relationship of Japan to United States of America for recent 40 years. This review on the development of Japanese industrial standard for dental materials and devices were described on comparisons with International Standard and American dental associations specification

Universal Design of Pictogram including Intellectual Disability

筑波大学 (University of Tsukuba)201

Studies on the Interchangeability of Wheels for Agricultural Tractors : I. Wheel fixing methods, the parts and the nomenclature

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トウキョウ カイヨウ ダイガク デノ ケンキュウ オ フリカエッテ

東京海洋大学名誉教