• Title/Summary/Keyword: 유연

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Studies on the Durable Softners (II) -Applications of Alkyl Imidazoline Derivatives as the Durable Softners- (내구성유연제에 관한 연구 (II) -알킬이미다졸린 유도체의 내구성유연제로서의 응용-)

  • Kim, Young-Geun;Park, Hong-Soo;Song, Kab Jun
    • Applied Chemistry for Engineering
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    • v.1 no.2
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    • pp.168-175
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    • 1990
  • Softners-BHICS, BBICS, and BTICS were prepared from 1, 2-disubstituted imidazoline compounds, such as 1-behenoylaminoethyl-1-glycidyl-2-heneicosylimidazolinium chloride(BHIC), 1-behenoylbis(aminoethyl)-1-glycidyl-2-heneicosylimidazolinium chloride (BBIC), and 1-behenoyltris(aminoethyl)-1-glycidyl-2-heneicosylimidazolinium chloride(BTIC), and treated to acrylic fiber. The measurements of softness, lubricating and antistatic properties showed that they have not only good softness and lubricating property but also a little antistatic property. Furthermore, the initial bending resistance for BBICS and BTICS was 5 grade, and remained 3~4 grade after 5 times washing. As results of these tests, they showed good softner effects having durability. The prepared softners were proved to be durable softner through a series of experimental results for washable properties of feeling by varying treating temperature and pH change.

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Studies on the Preparation of Durable Softners using Alkyl Imidazoline and Fatty Carbamide (알킬이미다졸린과 지방산 카르바미드를 이용한 내구성 유연제의 제조에 관한 연구)

  • Jung, Choong-Ho;Park, Hong-Soo;Kim, Young-Keun
    • Applied Chemistry for Engineering
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    • v.4 no.1
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    • pp.54-63
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    • 1993
  • Some emulsified 1, 2-disubstituted imidazolinium salts were synthesized by quaternization of 1, 2-disubstituted imidazoline which had been prepared by the reaction of dodecanoic acid with tetraethylenepentamine. 2-Docosamido-2'-docosanoyloxydiethylamine was prepared by the reaction of docosanoic acid with hydroxylethylethylenediamine. Then, some emulsified fatty carbamide salts were also synthesized by quaternization of fatty carbamide which had been prepared by the reaction of urea with the 2-docosamido-2'-docosanoyloxydiethylamine. Some softners were prepared by blending of these salts mentioned above. These softners were treated on acrylic fiber, then several properties were measured. As the results, softening and lubricating properties are good and a little antistatic property was observed. The synthesized softners were also proved as a durable softner by means of the several experiments : bending resistance test and measurements of feeling change with washing according to the pH changes. The surface structure of acrylic fibers treated with the softner were characterized by SEM.

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A Study on the Effects of Group Characteristics of Smart Work Users on Intention to use Smart Work (스마트워크 사용자의 집단별 특성이 스마트워크 이용의도에 미치는 영향에 관한 연구)

  • Kim, Young-Ae;Shin, Ho-Kyun
    • Journal of Digital Convergence
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    • v.10 no.11
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    • pp.165-174
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    • 2012
  • This study analyzes the effects of group characteristics of smart work users on intention for smart work activation(i.e., time flexibility, space flexibility, resource flexibility and ICT infrastructure). Also, this study analyzes the effects of different types of smart work depending on occupational groups, firm size and gender in local manufacturing companies. The results show that ICT infrastructure had the most significance in the early stage of smart work. On the contrary to the previous studies which focused more on time flexibility and space flexibility, this study exemplified that the resource flexibility demonstrated relatively higher significance than time flexibility and space flexibility. The results suggest the possibility of successful smart work by recognizing the change in organizational culture, specifically in face to face evaluation and vertical organizational culture to performance-based and horizontal organizational culture.

Economic Assessment of Coal-fired & Nuclear Power Generation in the Year 2000 -Equal Health Hazard Risk Basis- (2000년대 원자력과 유연탄 화력 발전의 경제성 평가 -동일 보건 위험도 기준-)

  • Seong, Ki-Bong;Lee, Byong-Whi
    • Nuclear Engineering and Technology
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    • v.21 no.3
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    • pp.171-185
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    • 1989
  • On the basis of equal health hazard risk, economic assessment of nuclear was compared with that of coal for the expansion planning of electric power generation in the year 2000. In comparing health risks, the risk of coal was roughly ten times higher than that of nuclear according to various previous risk assessments of energy system. The zero risk condition can never be achievable. Therefore, only excess relative health risk of coal over nuclear was considered as social cost. The social cost of health risk was estimated by calculation of mortality and morbidity costs. Mortality cost was $250,000 and morbidity cost was $90,000 in the year 2000.(1986US$) Through Cost/Benefit Analysis, the optimal emission standards of coal-fired power generation were predicted. These were obtained at the point of least social cost for power generation. In the year 2000, the optimal emission standard of SOx was analyzed as 165ppm for coal-fired power plants in Korea. From this assessment, economic comparison of nuclear and coal in the year 2000 showed that nuclear would be more economical than coal, whereas uncertainty of future power generation cost of nuclear would be larger than that of coal.

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Effect of Morphology and Granule Size of Crystalline D-Sorbitol on Texture of Sugar-Free Chewing Gum (결정형 솔비톨의 형태 및 입자 크기가 무설탕 츄잉껌의 텍스쳐에 미치는 영향)

  • Kim, Sang-Yong;Oh, Deok-Kun
    • Korean Journal of Food Science and Technology
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    • v.29 no.5
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    • pp.987-991
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    • 1997
  • Effect of morphology and granule size of crystalline D-sorbitol on texture of sugar-free chewing gum was investigated with different morphology of sorbitol such as a compact shaped P-type and a loose shaped S-type, and with different granule size such as 50 mesh, 80 mesh, and 100 mesh. The chewing gum including S-type sorbitol exhibited an increased flexibility and a decreased hardness as compared with that including P-type sorbitol. S-type sorbitol was chosen as a solid phase of sugar-free chewing gum because the consumer preferred a chewing gum with high flexibility and low hardness. The flexibility and hardness of chewing gum including S-type sorbitol were determined to be optimum at 80 mesh of the sorbitol size. The flexibility of the chewing gum including 80 mesh S-type sorbitol increased but the hardness decreased with increasing temperature.

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A Study on Resilience of North Korean refugee in South Korea (북한이탈주민의 적응유연성 관련요인)

  • Kim, MiYoung;Kim, Yun Ah
    • The Journal of the Convergence on Culture Technology
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    • v.4 no.4
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    • pp.279-285
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    • 2018
  • This study examined the resilience of North Korean defectors, resilience and the factors influencing resilience, and explored methods of improving their resilience. 129 North Korean defectors, who were trained in B city, participated in the survey from November, 2016 to February, 2017. The resilience, health promoting behavior, and self-esteem were measured. The mean scores were 3.46 for resilience. There were significant positive correlations between resilience and self-esteem. The influence of the independent variables on the on the resilience was examined using regression analysis. Models including the variables explained 11.7%(F=9.460, p<.001) of the variance for the resilience. These findings demonstrate that it is essential for nurses to continuously intervene and help North Korean defectors so as to promote their resilience and self-esteem.

Supportive Songwriting to Improve Resilience of Adolescents With School Maladjustment (학교 부적응 청소년의 적응유연성 향상을 위한 지지적 노래만들기)

  • Kim, Ji Won
    • Journal of Music and Human Behavior
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    • v.15 no.2
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    • pp.41-67
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    • 2018
  • The purpose of this case study was to examine how a supportive songwriting program could facilitate resilience for adolescents with school maladjustment. Participants included four middle school students with adaptive difficulties. The participants received eight 50-minute sessions of a supportive songwriting program. The program consisted of singing and discussing selected songs, followed by the participants creating their own lyrics about their current adaptation issues. The Resilience Scale for Adolescents was completed by each participant before and after the intervention, and the participants' lyrics were analyzed for how the factors of resilience were reflected in their lyrics. The results showed that all participants' scores on the resilience scale increased. It was also found that the factor on the resilience scale that increased the most for each participant was related to the issues expressed in their lyrics. The results suggest that the process of writing songs can be effective in eliciting adolescents' school related issues and accessing their positive resources, which can lead to behavioral and psychological improvements.

Palm Oil and Blood Cholesterol (한국인의 식이지방과 팜유의 영양 비교)

  • Ross L Hood
    • Journal of Nutrition and Health
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    • v.26 no.8
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    • pp.1007-1018
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    • 1993
  • 이상의 모든 결과를 요약해 보면 어유의 경우 항혈전 효과에는 상당히 들기름과 함께 좋으나 막의 유연성과 다른 면에서 들기름은 항혈전과 세포막의 유연성 유지 등에서 상당히 유리한 기름으로 생각할 수 있다. 팜유는 우지나 참기름보다 항혈전 효과나 세포막 유연성 유지에서 좋으나 들기름보다는 떨어지는 것으로 생각할수 있다.

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Inelastic Buckling Analysis of Partially Restrained Frame (유연 뼈대 구조물의 비탄성 좌굴 해석)

  • Kim Seung Eock
    • Proceedings of the Computational Structural Engineering Institute Conference
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    • 1996.10a
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    • pp.19-28
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    • 1996
  • 본 논문에서는 유연 연결부를 갖고 있는 이차원 구조물의 비탄성 좌굴해석을 연구하였다. 본 해석을 통하여 구조물의 기하학적, 및 재료적 비선형 뿐만 아니라 유연 연결부의 비선형 효과가 구조물의 거동과 강도에 미치는 영향을 예측할 수 있다. 본 해석 결과는 실험 결과와 비교하였으며 예제해석도 수행하였다.

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농장탐방 : 유연농장 - HACCP인증 육계농장 - 22년 닭과 함께 동고동락한 인생

  • Jang, Seong-Yeong
    • KOREAN POULTRY JOURNAL
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    • v.42 no.10
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    • pp.118-121
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    • 2010
  • 축산업에 애착을 갖고 22년째 육계를 사육하는 농장이 있다. 용인시 처인구 원삼면에 위치한 유연농장(사장 김유연)으로 총 9만수를 연간 5.5회전으로 사육하고 있다. 최근 무창계사 신축을 짓고 사육방법을 전환해 농장관리로 바쁜 시간을 보내고 있다. 더불어 금년 6월 HACCP 인증을 받아 친환경사육에 관심을 갖고 있는 이 농장을 찾아 인터뷰한 내용을 정리하였다.