本研究では, エアガイド方式エアジェットルームで緯入れ性能を向上させるための基礎研究として前報に引続き, ガイド内の空気特性について, スリットの有無や口径の異なる円筒管との空気特性の比較から検討した.以下得られた結果を要約する. (1) 円筒管内の空気の流れは, エアガイドと同様に2つの領域に分類される.この2つの領域は, 壁面静圧が負圧を示す自由噴流の性質を持っ領域と, 正圧を示す管内流の特性を持っ領域として特徴づけられる. (2) 壁面静圧が負圧を示す領域では, 円筒管のノズル噴流は, 円筒管の存在にもかかわらず, 周囲の空気を取込んで成長する.壁面静圧はノズル噴流が円筒管の内壁面と接する位置とほぼ対応して負から正に転ずる.壁面静圧が正圧を示す領域では, 円筒管の口径やスリットの有無によってそれぞれ異なる管内流の特性を示す. (3) スリット付き円筒管の流れとエアガイドの流れを比較すると, 最高流速, 壁面静圧変化などはノズルとの口径比3.3スリット率4%の円筒管がエアガイドの特性と概略一致する.

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It is necessary to have a good sleep and to prevent the bed-sore for the mattress. We carried on the research by one's progress on the merits and demerits on the results.
In this study, the basic properties of the mattress made from nonwoven articles were evaluated in regard to the body pressure and microclimate in bedding compared with conventional mattress.
The results obtained are as follows.
1) The mattress made from nonwoven articles (F₁ and F₂) are better than the conventional mattress made from cotton/polyester or wool in regard to body pressure distribution in bedding and toturning over in bed, they receive the negative effect when using along with urethane mattress.
2) The temperature in bed reaches an ideal temperature in bed (33±1°C) most quickly after bedding-in, and can enter into an ideal range of relative humidity in bed (50±5% RH) in the case that using the mattress made from nonwoven articles.
3) The environmental temperature has direct effects upon the relative humidity in bed compared with the temperature in bed in this experimental range.
4) According to statements of an subject, his body is sunk and hard to turn over when uses mattress A, and has the bottom hitting feeling when uses mattress B, and the mattress made from nonwoven articles gives stiff feeling to him.
These results are obtained with only one subject, however, we want to mention that shoud be considered from a more general approach, since body pressure in bed is influenced considerably by one's physigue and also the range of enviornment conditions is limited.

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The reproducibility, variation and operator dependence of newly developed KANEBO SYSTEM were compared with those of Rotary Static Tester (RST) and Faraday's Cage Method prescribed in JIS L 1094 (1980) in Part 1 and 2. And, it was proved that KANEBO SYSTEM has higher accuracy, higher reproducibility, lower variation and smaller operator dependence than those of above-mentioned existing methods.
Temperature and humidity dependence of frictional charge and it's decay rate of varied kinds of fibers has been investigated by KANEBO SYSTEM. And, it has been concluded that the optimum condition to evaluate antistatic properties is 25°C and 30-35 % RH from the viewpoint of practical and stable measurement.

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