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허일,이용득,이은웅,Il Hou,Y. D. Lee,Eun-Woong Lee 한국작물학회 1970 Korean journal of crop science Vol.- No.8
1) 본 실험은 Y.S.A. Gold leaf, oxford 1, Awha Yungzung, Samsun, Maruha, Hatano, 등 8개 품종을 온도와 일장 반응으로 본 것이다. 2) 온도는 저온을 야외(10~$20^{\circ}$) 고온을 온실($20^{\circ}C$~$35^{\circ}C$)에서 맞추었으며 일장은 8.10.12.14로 처리했다. 3) 이를 요약하면 1) 단일 조건에서는 고온보다 저온에서 장일조건에서는 저온보다 고온에서 개화가 촉진되었다. ii) 대체로 고온 장일에서 보다는 저온 단일에서 다소 개화가 촉진 되었다. iii) 그러나 위와 가튼 경향은 품종간에 많은 차이를 볼 수 있다. 1. Eight Varieties of Nicotiana tabacum, "Yellow special A", "Gold leaf", "Oxford, " "Awha", "Yungzung", "Samsun", "Maruha" and "Hatano" were compared on the photoperiodic responses. 2. Experiments were conducted both under high temp. condition(green-house, average temp $25^{\circ}C$-$35^{\circ}C$) and low temp. condition (out-door; average temp $10^{\circ}C$-$25^{\circ}C$) in four plots of 8.10.12 and 14 hours in day length. 3. The results obtained are summarized as follows; i) In the short day condition, the flowering was accelerated in the low temp. than high. On the contrary, in the high temp, it was accelerated in the long day. ii) Generally speaking, the flowering was responsed more in low temp. and short day length than high temp.-long day. iii) But the above trend was found great difference among varieties..-long day. iii) But the above trend was found great difference among varieties.
STS 321 강의 소둔열처리 조건이 입계부식특성에 미치는 영향
안용식,이용득,원태연,박미남 대한금속재료학회(대한금속학회) 1997 대한금속·재료학회지 Vol.35 No.1
In this study, the effect of annealing temperatures, especially without the additional stabilization treatment, on the intergranular corrosion in STS 321 stainless steel was investigated. Nitric acid immersion and Electrochemical Potentiokinetic Reactivation(EPR) tests were periormed to find out an optimum annealing temperature. Also the effect of annealing temperature in relation with the sensitization, i.e. precipitation behavior of the Ti-precipitates, was studied. According to the microscopic results, titanium nitrides formed by solidification and also sulfides were observed in the hot band. On the other hand, titanium carbides and carbosulfides were detected in the annealed hot strip. The optimum annealing temperature for improving intergranular corrosion resistance was found about 1020∼1040℃. This was related to the increase of titanium carbide precipitation during sensitization.