In order to measure the interlayer thermal resistance and thermal diffusivity of either layer by flash method, multilayer temperature equation with interlayer thermal resistance under radiation heat loss from both sides was derived in the Laplace space. As the analyzing method of interlayer thermal resistance etc. of 2 layered material, the least squares method in Laplace space was adopted using the rear surface theoretical temperature and the measured temperature. One method is an analysis method (direct method) in which all variables are treated as independent variables and the other method (cooling time constant method) is to use a relation in which the theoretical and measured cooling time constants are set equal. Both methods are confirmed to be effective for analyzing interlayer thermal resistance etc.
Glass and the like are classified as semitransparent material. The heat conduction of semitransparent material is considered as the sum of (1)conduction heat transfer, (2)heat conduction due to absorption/radiation in the material, (3)direct radiative heat transfer between the end faces. Simple modeling of the heat conduction by radiative heat transfer of 2nd and 3rd terms led to the thermal conductivity based on each phenomena. The thermal conductivity of the semitransparent material is approximately expressed as the sum of the individual thermal conductivities due to (1)～(3) heat conduction phenomena.
Blood glucose is generally at low concentration (<110 mg/dL) and has very small change, and thus it is required to develop a new technique to detect the small concentration change. In this paper, the purpose is to measure the dilute glucose concentration in aqueous system without contact, in preparation for development of non-invasive sensing technique. We calculated the sensitivity of physical properties to the glucose concentration changes. It turned out that optical rotation has the largest sensitivity. Therefore, we developed a small optical rotation measurement system (rotation half-wave retarder method) using multiple wavelength. We achieved to detect about 100 mg/dL concentration change at dilute range. Then, by measurement of glucose + albumin aqueous solution using λ = 637 and 785 nm, we tried to measure the glucose concentration in multi-component system.