Viscosity of molten InSb, GaSb and In_xGa_1-xSb (x = 0.2 and 0.4) were measured as a function of temperature using an oscillating viscometer for fundamental understanding of the physical property for growing high quality of InGaSb multi-component semiconductor crystal. The measured values showed good Arrhenius linearity for InSb, GaSb and In_xGa_1-xSb samples. The absolute values of viscosity for InSb and GaSb agreed with previous study of other group. Also, it is suggested that absolute value of viscosity among InSb, GaSb and In_xGa_1-xSb were quite similar, and the value of In_xGa_1-xSb was between InSb and GaSb. The results are applied to the parameter of numerical simulations on InGaSb crystal growth under microgravity condition on the International Space Station.

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We discussed the usefulness and problems of the thermal comfort evaluation of clothing using a thermal mannequin with sweating and walking function. The mannequin is able to supply liquid water to the skin surface from 141 pores corresponding to the sweat glands, and simulates walking motion. The distribution of surface temperature of the mannequin was approximated to that of human skin temperature. We determined the surface thermal resistance of nude mannequins during standing, walking, and sweating. Two types of waterproof jackets (made of regular or breathable waterproof fabrics) and two types of T-shirt (made of cotton or polyester) were used as test garments. The thermal resistances of these clothing were measured. There was no forced convection during walking because the mannequin did not move. With thermal resistance, it is important that the microclimate (temperature and humidity within clothing) between the surface of the mannequin and clothing is measured when evaluating the thermal comfort.

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