We investigated the initial growth behavior of Machilus thunbergii（Kosterm） potted saplings planted around the northern limit of the Pacific side of Japan for five years to study reforestation of coastal forest degraded by a tsunami. Measurement of tree height, basal diameter, and air temperature at the planting site were recorded from October 2012 to October 2017. Numerous M. thunbergii potted saplings were affected by low temperature and low humidity in the winter season. Further, sprouting regeneration, after the main stems withered, was observed in more than 40% of the potted saplings. There was a difference in height and survival between the regenerated potted saplings and the undamaged ones. The average height of undamaged saplings was 324 cm, with nearly the same growth as other sites on the southern and western sides of Japan, and showed a 92.8% survival rate. However, the regenerated saplings exhibited a height of 210 cm, and a 48.4% survival rate, which decreased annually. This suggests, that low-temperature damage in the initial growth stage causes the shorter regenerated potted saplings to decline in survival rate for several years, due to the lack of sunlight caused by the closed crown that formed on the undamaged saplings.

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低濃度のポリブタジエンゴム溶液を加熱すると分解が優先的に起こり架橋反応は起こらなかった. 加熱によるゴム溶液の粘度低下速度は溶媒により非常に異なった. すなわち, 溶媒により粘度低下速度は次の順に小さくなった. o-ジクロルベンゼン>モノクロルベンゼン, o-キシレン>i-プロピルベンゼン>エチルベンゼン>トルエン
この顕著な溶媒効果は, 溶媒の極性や溶解性パラメーターよりも溶媒分子の立体的なものが支配的因子であると推察された. また, 過酸化ベンゾイルの添加により分解は非常に促進され, N-フェニル-2-ナフチルアミンなどのラジカル禁止剤の添加や窒素ふん囲気中では分解はほとんど起こらなかった.

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前報に引き続き主として加硫したBR, SBR及びIR (カーボンブラック配合並びに無配合) を200℃～340℃のホットプレスで加熱し, その特性の変化を測定し, 前報の未加硫のものと比較した結果である.
BRとSBRは, 未加硫, 加硫及びカーボンブラックの存否にかかわらず, 温度が高くなるにつれ硬化し, 膨潤率は減少し, 比重は増加し, 架橋が進行するが, IRでは未加硫, 加硫いずれも250℃付近から軟化分解する.前二者の合成ゴムの硬さや膨潤率の変化は250℃から300℃の間で著しくかつBRの変化がSBRの変化より大きい.
他方, 赤外分析の結果は, 前報同様シス-1, 4がトランス-1, 4に転位後不飽和の消失を示すが, 転位は未加硫ゴムの場合より少ない.いずれにしてもオートクレーブ中で加熱して軟化した結果との相関性はまだ得られていない.
これら特に加硫BRの高温長時間加熱試料はりん片状に壊れやすいので, 屈曲試験を行ったところBRのチッピングに相関するような結果が得られた.

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The hydroxyl radicals (HO·) spin adduct of 5, 5'-dimethyl-1-pyrroline-N-oxide (DMPO) was obtained in the hypoxanthine-xanthine oxidase (HX-X.O.) system in the presence of isolated islet cells by using electron spin resonance spectroscopy. There was a significant increase in the concentration of DMPO-OH spin adduct dependent on the increase in a number of islet cells. In the absence of islet cell, the DMPO-OOH spin adduct formed by superoxide together with a small amount of DMPO-OH spin adduct was detected in HX-X.O. system. These results suggest that HO· is greatly produced in the HX-X.O. system in the presence of islet cells. The generation of HO· was partially inhibited by the addition of superoxide dismutase or catalase and completely by the combined use of both enzymes. Iron-chelator, diethylenetriaminepentaacetic acid and iron-binding protein, apotransferrin also inhibited the generation of HO·, suggesting a possible participation of a trace iron in the islet cells. The inhibition of insulin release from islet cell, as well as the amount of DMPO-OH spin adduct, was dependent on the concentration of X. O. These results indicate that the HO· is produced by the site-specific action with islet cells in HX-X.O. system, suggesting a possible involvement of HO· in the oxygen damages of islet cells.

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A limiting form can be derived by letting the weighting matrix of the state vector to infinity in a standard linear quadratic problem. Under the condition that the system is minimum phase it has been pointed out that the limiting form presents the solution to the output zeroing problem for arbitrary initial conditions. In this paper, it is shown that the limiting form is related to output zeroing problem for non minimum phase systems. Then it is proposed to apply the limiting property to control the manipulator composed of 2 links with a constrained condition. Simulation and experimental results show that the proposal control method is effective.

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This paper clarifies the current situation and challenges of training vocational training instructors by the concept of emotional labor. In Polytechnic University, vocational training instructors are being trained to provide skills of manufacturing to job seekers in a short period. However, the group of trainees consists of people with different age, gender, knowledge and technology levels, so the vocational training instructors are likely to have difficulties. This paper therefore examined the process where vocational training instructors consider various differences of trainees and motivate the job seekers to voluntarily start their job search as their basic “emotion control ability” . This paper reports an education and training that combined video teaching material and practical education for new instructors to acquire the ability.

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