In this study, in the first place, the validity of the initial maximum value of heat flux, qmax, as an objective measure of warm/cool feeling when human skin touches on fabrics is confirmed by sensory test. Nextly, relations between qmax and basic mechanical properties for many kinds of fabrics of six uses are examined. As a result, fairly high correlations between qmax and thickness, weight, compressive properties are obtained. Experiments to obtain qmax are carried out for various fabrics which differ in type of fiber, yarn structure and fabric structure under standard condition and wet condition. From the results of fabrics which have almost the same fabric construction and vary in fiber material, it is found that the behaviours of moisture regain vs. qmax are divided into three groups. It is remarkable that qmax of linen is higher and that of wool is lower. The warm feeling of wool and the cool feeling of linen can be explained from these results. However, the dependence of the behaviour of qmax of wet fabrics on fabric and yarn structures is not so strong as in the case of thermal conductivity reported in the previous paper.
In a previous work, it was recognized that the formation of liquid crystalline phases played an important role in a fatty soil detergent action. In the present work the temperatures, at which liquid crystalline phase appears in the ternary system, surfactant-water-fatty soil, have been determined at various concentrations of the surfactant using a differential scanning calorimeter (DSC). The structures of liquid crystal have been determined by the observation with a polarizing microscope. Samples used are sodium dodecyl sulfate (SDS) as a surfactant and the mixture of palmitic and stearic acids, 4 : 1, as a model soil. The results showed that two kinds of liquid crystals, a middle phase and a neat phase, were formed depending on the concentrations of SDS and temperature. The SDS concentration dependences of TM and TN, the temperatures at which the middle phase and neat phase were formed respectively, were investigated together with the conversion ratio of the model soil from a solid state into a liquid crystallin state. It was proved consequently, that for fatty soil removal the formation of the neat phase was preferable but not that of the middle phase.
The purpose of this study is to grasp how greatly children change in their way of possession, use and directional intention of their room as they grow older, and to make clear how change in sex, and change in directional intention of mothers and children. In this paper, the children (fifth-grade pupils, sixth-grade pupils, eighth-grade pupils and eleventh-grade pupils) and their mothers have been inquired. The following results were obtained. 1) Most children who are fifth-grade and sixth-grade have the children's room and most eleventh-grade have their own room. 2) Children use their own room as anybody can come and go there. And children take care of their own children's room for themselves and control almost their private life in their own children's room as they grow older. 3) It has been found that the rate of possession of children's room is not different by sex, but how to use them is not the same by sex. 4) It has been found that children's view of the functions of children's room is different from mothers' one, and some problems exist on mothers' side.