An empirical formula between vaporating and weather energy on “Shijoka”-type concentrating equipment was obtained.
fE/T=0.364 ·S·C·U^0·69
where E/T; vaporating velocity,(kg/hr)
f; factor of vaporating resistance.
S; section area of “shijoka”-type concentrating equipment (m²)
C; saturation deficit of the air,(g/m³)
U; mean wind velocity,(km/hr)
According to vaporating velocity, critical vaporating velocity on the economical working of “Shijoka” was calculated from producting cost and receipts, and relation between weather elements and critical vaporating velocity was figured.

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In order to research the limit of area ratio of the Shijoka to the flow-down type salt field, we measured the distribution of the humidity and the wind velocity, because of the tendency of setting more shijoka.
(1) Beyond the Shijoka, the humidity and the wind velocity recovered generally 65-90%, of course, the numerals changed with the velocity.
(2) It is better that Shijoka is set perpendicularly to the direction of the wind, mostly through a year and zigzag.
(3) From the technical and economical points of views, the area limit of Shijoka to salt field is about 15%.

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活性ケイ酸マグネシウムは吸着剤および触媒として広く用いられる. ここではケイ酸マグネシウムを活性化することを研究した. 結果はつぎのごとし
(1) ケイ酸マグネシウムの吸着力はその化学組成とそれがつくられた方法により決まる.
(2) MgO:SiO₂=1:40-1:20の組成物はケイ酸ソーダとマグネシウム塩溶液から普通つくられるが, ベンゾール, アセトン, エーテルなどの有機溶剤を著しく吸着する.
(3) MgO:SiO=2:3の組成物は一般に, メチレンブルーを吸着するものであるが, つぎの新しい二段法にてつくられると活性をます. 二段法とは, 第一段にて, より高塩基度のマグネシウム塩をつくり, 第二段にて, 酸分解し目的MgO:SiO₂=2:3とするのである.

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In previous paper was described the industuial utilization of the waste calcium carbide-method. In the present papes. We described about a reaction of CaC₂ and bittern to give C₂H₂ gas and Mg (OH)₂ according to the following reaction.
CaC₂+MgCl₂+2H₂O→C₂H₂+Mg(OH) ₂+CaCl₂
Investigating emiting velosity of C₂H₂ gas and easiness of filtration, impurities in yield of produced Mg(OH)₂. We examined various industrial condition of the reaction such as temperature and concentration.

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In order to find the more effective method for synthesis of potassium selective resin “polyhexyl”, having researched several methods, started from benzaldehyde, acetophenon and polystyrene etc. respectively, we have found that, as material, polystyrene was the most profitable, and decided to synthesize “polyhexyl” from it. In these papers, we inform the nitration of polystyrene as part 1. At first, we found that the polymerisation degree of polystyrene used was about 10⁴, and then the best method that produced p-mononitropolystyrene was nitration by nitric acid fuming not heated.

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食塩の水分を赤外線加熱法によつて測定する場合の精度について論じた. 赤外線ランプと皿との距離d (cm), 電圧V (volt), 皿上において温度計の示度t (℃) の間に次の関係がある事が実験的に示された.
1.191 log V-0.360 log d+0.392=log t±0.01
又此の装置で1分間に1 voltずつ昇圧した場合の加熱減量曲線を求めた. 最後に迅速水分測定法を試みた.

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Vol. 11 (1957) No. 1 p. 20-23

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