• Korean Journal of Agricultural Science
• /
• v.27 no.2
• /
• pp.86-94
• /
• 2000

This study was carried out to determine the effectiveness of uniconazole in ameliorating low and high temperature injury in tomato plants(Lycopersicon esculentum Mill. cvs. Fireball and Patio). Plants were given a soil drench of 0, 0.001, 0.01 or $0.1mg{\cdot}pot^{-1}$ uniconazole, and after 14 days, were treated with 12-h day/12-h night cycles at $25/25^{\circ}C$, $2.5/25^{\circ}C$, $25/2.5^{\circ}C$ or $40/40^{\circ}C$ for 4 days in controlled-environment chamber. Number of damaged leaves per plant, reduction of stem elongation, and overall injury were high at $2.5/25^{\circ}C$, but more reduction of leaf elongation, delay of flowering, and abortion of floral bud were observed in plants at $40/40^{\circ}C$. There was difference in degree of injury between cultivars, thus, 'Fireball' was much affected by unfavorable temperature regimes. All concentrations of uniconazole reduced leaf and stem elongation, increased total chlorophyll concentration, delayed flowering, and significantly provided protection against low and high temperature injury in two cultivars. In general, the application of uniconazole did not inhibit flowering delay and floral bud abortion induced by high and low temperature exposure. Our results support the hypothesis that the role of uniconazole is related to defense system against oxidative stress induced by low temperature stress. Further research is required to clarifu the phytoprotective mechanism of this compound agaist high temperature stress.

• Korean journal of applied entomology
• /
• v.51 no.4
• /
• pp.411-419
• /
• 2012

The lure-distance of Riptortus pedestris aggregation pheromone was elucidated and the damage mitigation effect by mass trapping of R. pedestris was examined in commercial soybean fields. The recaptured ratio showed that 76.1% of total recaptured individuals were lured within 40 m and 89.0% of total recaptured adults were arrested in the lower 80 m. There is not much difference in the number of recaptured individuals according to the location of installed traps in the experiment. There was linear correlation between the total installed number of traps and the total number of trapped individuals in commercial soybean fields. and the highest yield (261.8 g/10 stems) was investigated in the field that had installed a pheromone trap per $770m^2$. No relationship wasf found between the covered areas of a pheromone trap for mass trapping and yield loss. The ratio of type A seed (healthy) was higher in the field that installed a trap per $385m^2$ and $770m^2$ (around 62%) and type B seed (showing distinct injury marks) was lower in the same fields (around 27%). From this result, we could reduce slightly the damage of soybean seeds by the mass trapping of Riptortus pedestris adults with an aggregation pheromone trap per $385{\sim}770m^2$ area range.

• Korean Journal of Agricultural Science
• /
• v.7 no.1
• /
• pp.27-32
• /
• 1980

In order to determine the effect of activated carbon on toxicity of linuron and napropamide to Chinese cabbage, red pepper, and tomatoes, 5 and 10kg/10a of activated carbon were applied to the soil surface prior to treatment of linuron at 50 and 75g/10a and napropamide at 150 and 225g/10a. 1. Chinese cabbage was protected from linuron injury by spraying activated carbon on the soil to adsorb and detoxify the herbicides even though it was completely killed by linuron at 50 and 75g/10a without activated carbon application. However, Chinese cabbage was not injured by napropamide at 150 and 225g/10a and thus antidotal effect by activated carbon was negligible. 2. Red pepper was greatly injured by linuron at 50 and 75g/10a, but activated carbon significantly reduced linuron injury. Napropamide at 225g/10a was slightly injurious to red pepper. Nevertheless, this injury effect was reduced by activated carbon at 5kg/10a. 3. Tomatoes were also severely injured by linuron at 75g/10a, but activated carbon prevented linuron injury to tomatoes. However, napropamide at 150 and 225g/10a were slightly injurious to tomatoes and activated carbon did not completely prevent napropamide injury to tomatoes.

• Korean Journal of Environmental Agriculture
• /
• v.6 no.1
• /
• pp.25-30
• /
• 1987

This study was conducted to find out the effect of several improvers such as triple super phosphate, slaked lime, wollastonite and gypsum for reducing Cd content in brown rice. Several improvers were applied to two different types of soils which are contaminated with copper-zinc mine wasted and sludge.(Soil I contained Cd : 7.88, Cu : 57.9, Zn : 175.0 ppm, Soil II contained Cd : 3.95, Cu : 30.2, Zn :124.0 ppm) In general, effects of improvers on reducing content of Cd, Cu and Zn in brown rice were greater in soil I than soil II. In soil I, the Cd content of brown rice was reduced to 0.4ppm below by application of triple superphosphate, fused phosphate, slaked lime and gypsum, 98, 225, 190 and 276Kg/10a, respectively. Triple superphosphate was more effective than fused phosphate in reducing uptake of Cd, Cu and Zn by applying them as an equal amount of phosphorous, also to equal alkalinity, slaked lime had the highest effect. Negatively linear effect was found between soil pH and Cd and Zn content in brown rice. As to above results, it was no doubt that triple superphosphate, fused phosphate and slaked lime would be applied to reduced heavy metals in brown rice. The slaked lime, triple super phosphate and fused phosphate were available to reduce uptake of Cd, Cu and Zn by rice plant grown in the soil contaminated with mine waste and sludge.

• (The) Research of the performance art and culture
• /
• no.25
• /
• pp.91-134
• /
• 2012

This study is to prove out that the group members' prejudice about divorce was lessened by participating in the sociodrama, making the sociodrama performed during five sessions from September 27, 2011 to November 8, 2011 as object of study. The prejudice was lessened mainly by way of role rotation, which was interpreted on the philosophical basis, '~becoming' of Gilles Deleuze, $F{\acute{e}}lix$ Guattari. The results of this study are as follows. Firstly, the lessening of prejudice about divorce was realized by way of 'true meeting'. It is achieved by the boundary-blurring between 'You' and 'I' through the 'molecular-becoming'. Secondly, the participants took a stricter stance against the divorce by a extramarital affair rather than the divorce by a domestic violence. It is thought that the boundary-blurring in the divorce by a extramarital affair is able to be accomplished more effectively than the boundary-blurring in domestic violence. Fourthly, an understanding of society not as an individual, 'I' but as a community, 'We' worked effectively in solving various social problems. This perspective is helpful in blurring the boundary between 'You' and 'I', and then in seeing 'You' and 'I' as a whole entity. In conclusion, it is found out that this sociodrama program has a considerable effect on the lessening of the prejudice about divorce.

• Journal of the Society of Disaster Information
• /
• v.19 no.4
• /
• pp.788-805
• /
• 2023

Purpose: This study aimed to verify the impact of Habitat for Humanity Korea's disaster risk reduction intervention on the mental health and satisfaction with life among residents of southern Bangladesh who had constantly suffered from disaster stress due to perennial flooding. Method: The target group was 138 residents who were pre-surveyed in August 2020 and post-surveyed in November 2021. The interventions consisted of individual incremental housing, public facilities for evacuation, and disaster response training for capacity development. The data were analysed using paired sample t-tests for pre-post changes and one-way analysis of variance to identify differences between treatment groups. Result: The results showed significant improvements in residents' depression, anxiety, somatisation and satisfaction with life after the intervention, with significant differences in mental health levels between the intervention treatments. Specifically, relatively higher disaster mitigation effects were found for individual infrastructure improvements and employment facilities compared to disaster response drills. Conclusion: These results demonstrate the positive role of Habitat for Humanity Korea's disaster risk reduction interventions on the mental health recovery of disaster victims and suggest practical approaches that can be applied in disaster risk areas.

• Bulletin of Korea Environmental Preservation Association
• /
• s.401
• /
• pp.20-23
• /
• 2012

빗물은 생명의 보전과 문명의 발전에 기여하는 천연자원이다. 빗물관리시설의 설치는 물순환 개선을 통한 하천유지용수 확보, 지하수 함양을 통한 도시 물 자급율 개선, 도시 열섬화 개선 등의 효과와 하천의 수질오염 완화, 우수유출량 저감으로 침수피해 경감 등의 효과를 가져다 준다.

• Proceedings of the Korean Society of Crop Science Conference
• /
• 1986.06a
• /
• pp.78-79
• /
• 1986

• 전기의세계
• /
• v.43 no.4
• /
• pp.43-49
• /
• 1994

보호계전의 목적은 인명의 보호는 물론 전기설비나 계통의 사고를 조기에 검출, 사고구간을 분리하므로써 전력설비 자체의 손상을 경감시키고 생산설비의 가동중단이 없도록 신뢰성을 높이는 것이다. 본고에서는 산업용 수배전설비의 보호를 위한 보호계전기가 적정하게 동작하도록 입력요소를 제공하는 변류기 및 계기용 변압기 선정에 대한 고려사항과 수배전계통을 구성하는 중요설비의 보호를 위해 세심한 주의가 요구되는 사항에 대해 기술한다.

• Agrochemical news magazine
• /
• v.24 no.7 s.190
• /
• pp.14-17
• /
• 2003