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Optrode sensor for chemical and physical measurement
Hiroaki Aizawa,Hiroaki Ishizawa,Eiji Toba 제어로봇시스템학회 2008 제어로봇시스템학회 국제학술대회 논문집 Vol.2008 No.10
This paper describes an optrode sensor for chemical and physical measurement and its application to industrial examinations. Among many king of optrode sensors, we have fabricated a temperature, oxygen and pH sensor and characteristics of which was experimentally investigated. Our experimental data shows the optrode sensor for chemical and physical measurement has singular capability as compared with a conventional sensor such as an electrode sensor.
The synthesis and properties of bulk lanthanum phosphates obtained by hydrothermal hot pressing
Hiroaki Onoda 한양대학교 세라믹연구소 2012 Journal of Ceramic Processing Research Vol.13 No.5
Bulk samples of lanthanum phosphates were synthesized in a hydrothermal hot pressing process. In this process, the pressing temperature, pressure, and the volume of water were varied to improve the density and various strengths. The strength of the bulk samples was estimated from drilling and ultrasonic treatments, and the residual ratio in hydrofluoric acid. Lanthanum phosphate formed the porous bulk samples with about 60% filling factor, which were calculated from the real and theoretical densities. By heating the lanthanum phosphate before the pressing, the maximum diameter became larger of the phosphate pellets without cracking. Lanthanum phosphate bulk samples gave a high residual ratio in hydrofluoric acid. The hydrothermal hot pressing process is a useful method to obtain the bulk samples of lanthanum phosphate.
Case Alternations in Potential Constructions in Japanese and their Semantic Implications
( Hiroaki Nakamura ),( Takeshi Fujita ) 한국언어정보학회 1998 국제 워크샵 Vol.1998 No.-
In potential constructions in Japanese any argument of a base verb, whether it is an argument, an adjunct or even an argument with no thematic relation to the verb, can be marked with nominative case. Addressing the problem of various types of case alternations as well as ``ga-no`` conversion, this paper argues for the existence of some semantically motivated mechanism licensing nominative and genitive case, which adequately accounts for the distributions of these cases in these constructions. We also claim that there is a close connection between the morphological realization of case and the overall semantic interpretation of a sentence.