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Sin-Ae Park(박신애),Ki-Cheol Son(손기철),Myung-Min Oh(오명민),Youn-Jung Kwon(권윤정) 한국원예학회 2009 원예과학기술지 Vol.27 No.3
Ethylene sensitivity has been shown in several studies as a problem in kalanchoe. An ethylenecontaminated environment such as transportation or display stands in supermarkets deteriorates visual appearance and display life. In this study we determined the efficacy of two ethylene inhibitors, silver thiosulfate (STS) and 1-methylcyclopropene (1-MCP), on flower opening and lifespan of Kalanchoe blossfeldiana ‘New Alter’ cultivated in a greenhouse after simulated transport. STS and 1-MCP were applied to kalanchoe plants at similar commercial maturity prior to simulated transport (dark, 12℃ and 60% relative humidity). STS (0.2 mM, 0.5 mM, and 1 mM) was sprayed and 1-MCP (50 nLㆍL?¹, 100 nLㆍL?¹, and 200 nLㆍL?¹) was injected into sealed glass chambers containing kalanchoe plants for 6 hours. After simulated export for 5 days, the plants were immediately moved to a simulated retail room. The number of inflorescence, buds, and dead florets on all inflorescence were counted weekly for 7 weeks. Percentages of open flowers and dead florets were then calculated. Both STS and 1-MCP had significant effects on improving the quality of kalanchoe flowers by inducing flower opening or extending lifespan compared to the control, suggesting the inhibition of ethylene production by these inhibitors. Among the treatments, 0.5 mM and 1 mM STS showed the best results for induction of flowering and extension of lifespan. 1-MCP was not as effective as STS although the inhibitor had significantly better effects on flower opening than the control. Thus, in this study we showed great possibilities for practical usage of these two ethylene inhibitors on potted kalanchoe plants.
식용유지로부터 글리세롤리스반응을 이용한 디글리세리드의 효소적 생산
권기석,권신애,강성태 서울産業大學校 2005 논문집 Vol.54 No.3
For the production of diglyceride(DG) edible oil and glycerol(GL) were reacted in the presence of lipase. Lipase P from Pseudomonas sp. was selected among commercial lipases on the basis of triglyceride(TG) conversion and DG content (96) during glycerolysis reaction. More than 45% of DG was obtained by reacting GL and some edible oil such as soybean oil, cotton seed oil, corn oil in the presence of lipase P. However, A little lower content of DG was obtained by mixing each edible oils and GL in the ratio of l.'l(w/w). Temperature shift effect was investigated for the production of diglyceride. After initial incubation at 37°C for 12hr, incubation temperature was shifted to -2~50°C for 60hr. TG content and FFA content were little changed in the ranges of above 25 °C. And DG purity was increased up to 55% with the increase of temperature. Below the temperature of 15°C, the content of MG was increased, whereas both DG content and TG content was decreased with the increase of temperature. The combined use of lipase AK/lipase P could make the required amount of lipase P reduce by obtaing the same DG content in the product. Maximum yield of approximately 46.3% DG(DG purity: 55.9%) was obtained by adjusting molar ratio of GL/TG and water content of GL to 0.5'-1 and 4.4%, respectively.
아버지의 성 상동형(sex-role stereotype)과 아동의 성 상동형과의 관계연구
권은정,김연신,노명희,박영미,원경록,이경열,이계숙,이진용,임희진,최여정,최혜영,홍성애 연세대학교 생활과학대학 1987 婦學 Vol.20 No.-
The purpose of this study was to explore the relationship between the sex-role stereotype of the father and the child. We investigated the following: ⑴ Is there a relationship between the sex-role stereotype of the father and the child? ⑵ Is the age of the child a variable in the relationship between the sex-role stereotype of the father and the child? ⑶ Is the sex of the child a variable in the relationship between the sex-role stereotype of the father and the child? The subjects were 193 13-year-old students attending a middle school in Seoul and their fathers and 70 5-year-olds attending a kindergarten in Kwachon and their fathers. The test for the 193 middle school students and their fathers was the Likert Scale of the Bem Sex-Role Inventory which was utilized by the experimenters after a pretest. The instrument for the 5-year-olds was the 22 story-picture card Williams and Bunnett test(1975) modified by Lee, Sook(1982). The kindergarten fathers were tested with the same instrument as the middle school fathers. The data from these 2 tests were then compared using χ^2 test and percent(%). The result of this study were: ⑴ A relationship between the sex-role stereotype of the father and the child was found only between the sex-role stereotype of the middle school students and their fathers. ⑵ Age of the child was found to be a variable in the relationship between the sex-role stereotype of the father and the child. That is, a significant relationship was found between the sex-role stereotype of the middle school students and their fathers, but not between the sex-role stereotype of the preschool children and their fathers. ⑶ Sex of the child was found to be a variable in the relationship between the sex-role stereotype of the father and the child. That is, a significant relationship was found between the sex-role stereotype of the middle school boys and their fathers, but not between the sex-role stereotype of the middle school girls and their fathers.
Sin-Ae Park,Youn-Jung Kwon,Myung-Min Oh,Ki-Cheol Son 한국원예학회 2011 원예과학기술지 Vol.29 No.1
This study was conducted to determine the effects of silver thiosulfate (STS) and 1-methylcyclopropene (1-MCP) on flower opening and lifespan of potted Kalanchoe blossfeldiana ‘Oriba’ for exportation. Ethylene inhibitors, STS and 1-MCP were applied to the kalanchoe plants prior to their export to Japan. STS 0.5 mM with 1% Tween 20 surfactant was directly sprayed (20 ㎖ per plant) to leaves, buds, and flowers and 1-MCP 100 nL?ℓ?¹ was injected into sealed glass chambers containing kalanchoe plants, which were placed on the chambers for 6 hours. After transport to Japan, the plants were immediately transferred to a simulated retail condition room (80 μ㏖ㆍ?²ㆍs?¹ for 12 hours of photoperiod at 22℃ and 64% RH) at Toyko University. The numbers of buds, open florets, and wilted florets in the middle inflorescence for each plant were counted right after export, 1 week after export, and 6 weeks after export. The percentages of open florets and wilted florets were calculated from the numbers. STS treatment resulted in 35% more open florets than the control and only 11% of wilted florets at 6 weeks after export to Japan which indicate the extension of lifespan of potted kalanchoe plants. Meanwhile, the plants exposed to 1-MCP before export did not show any significant differences in the numbers of buds and open florets and the percentages of open and wilted florets compared to control plants. In conclusion, STS 0.5 mM treatment strikingly induced better opening florets and lifespan of kalanchoe plants from 1 week to 6 weeks after export than control.
X3D Nodes for Representing and Rendering Real Characters in 3D Virtual Environments
In-Kwon Kim,Sin-Ae Kwon,Mihye Kim,Kwan-Hee Yoo 보안공학연구지원센터 2015 International Journal of Smart Home Vol.9 No.2
This paper proposes and defines four eXtensible 3-dimensional (X3D) nodes to render real-world characters such as human being and animals in 3D virtual environments, which conform to the X3D standard format for representing and rendering real-world characters in virtual spaces, aiming to make them available as an extension of the X3D core nodes. Several examples are implemented to evaluate the effectiveness of the pro-posed X3D nodes. Implemented results demonstrate the feasibility of the proposed X3D nodes as an extension of the X3D core components for rendering real characters in 3D virtual spaces.
Park, Sin-Ae,Kwon, Youn-Jung,Oh, Myung-Min,Son, Ki-Cheol Korean Society of Horticultural Science 2011 원예과학기술지 Vol.29 No.1
This study was conducted to determine the effects of silver thiosulfate (STS) and 1-methylcyclopropene (1-MCP) on flower opening and lifespan of potted Kalanchoe blossfeldiana 'Oriba' for exportation. Ethylene inhibitors, STS and 1-MCP were applied to the kalanchoe plants prior to their export to Japan. STS 0.5 mM with 1% Tween 20 surfactant was directly sprayed (20 mL per plant) to leaves, buds, and flowers and 1-MCP 100 $nL{\cdot}L^{-1}$ was injected into sealed glass chambers containing kalanchoe plants, which were placed on the chambers for 6 hours. After transport to Japan, the plants were immediately transferred to a simulated retail condition room (80 ${\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}$ for 12 hours of photoperiod at $22^{\circ}C$ and 64% RH) at Toyko University. The numbers of buds, open florets, and wilted florets in the middle inflorescence for each plant were counted right after export, 1 week after export, and 6 weeks after export. The percentages of open florets and wilted florets were calculated from the numbers. STS treatment resulted in 35% more open florets than the control and only 11% of wilted florets at 6 weeks after export to Japan which indicate the extension of lifespan of potted kalanchoe plants. Meanwhile, the plants exposed to 1-MCP before export did not show any significant differences in the numbers of buds and open florets and the percentages of open and wilted florets compared to control plants. In conclusion, STS 0.5 mM treatment strikingly induced better opening florets and lifespan of kalanchoe plants from 1 week to 6 weeks after export than control.