• 제목/요약/키워드: exhibit

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Soy Isoflavones and Soyasaponins: Characteristics and Physiological Functions

  • Lee, Yoon-Bok;Lee, Hyong-Joo;Kim, Chung-Ho;Lee, Soo-Bok;Sohn, Heon-Soo
    • Journal of Applied Biological Chemistry
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    • 제48권2호
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    • pp.49-57
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    • 2005
  • Soy is an important food in Asia and many studies have suggested that the low incidences of chronic diseases in Asian countries are associated with diets that are rich in soy. Soy contains many kinds of phytochemicals, and soy isoflavones and soyasaponins have received considerable attention. Twelve isoflavone components have been isolated from soy: three aglycones (daidzein, genistein, and glycitein), and their respective nine glucosidic conjugates. Soy isoflavones are similar in structure to estrogen and exhibit both estrogenic and antiestrogenic activities. Soy isoflavones exhibit anticancer activity, can reduce the risk of cardiovascular disease, and are beneficial to brain and bone health. Soyasaponins are divided into three groups (A, B, and E saponins), and they exhibit hypocholesterolemic, anticancer, hepatoprotective, antioxidative, and anti-human-immunodeficiency-virus effects. Despite the abundant literature suggesting that soy isoflavones and soyasaponins have potential applications in preventive medicine, further research is needed to standardize dosages and ensure their efficacy.

Width-Dependent Transition of Magnetic Domain Configuration in Nanostructured CoFe/Pt Multilayered Nanowires

  • Je, Soong-Geun;Lee, Jae-Chul;Kim, Kab-Jin;Min, Byoung-Chul;Shin, Kyung-Ho;Choe, Sug-Bong
    • Journal of Magnetics
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    • 제17권4호
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    • pp.242-244
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    • 2012
  • We report on the basis of experiments that magnetic domain structures exhibit a transition between single and dendrite domains with respect to the width of ferromagnetic nanowires. This transition is directly observed in CoFe/Pt multilayered nanowires having a width in the range of 580 nm to 4.2 ${\mu}m$ with a magnetic force microscope. Nanowires wider than 1.5 ${\mu}m$ show typical dendrite domain patterns, whereas the nanowires narrower than 690 nm exhibit single domain patterns. The transition occurs gradually between these widths, which are similar to the typical widths of the dendrite domains. Such a transition affects the strength of the domain wall propagation field; this finding was made by using a time-resolved magneto-optical Kerr effect microscope, and shows that the domain wall dynamics also exhibit a transition in accordance with the domain configuration.

FDDI MAC 프로토콜의 우선순위 등급에 따른 매체 이용 평균시간에 관한 연구 (A Study on Average Access Times by Priority Levels of FDDI MAC Protocol)

  • 김경식;강준길
    • 한국통신학회논문지
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    • 제14권4호
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    • pp.369-373
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    • 1989
  • FDDI MAC 프로토콜에서 8가지 어싱크로노스 액세스 우선순위 등급들의 평균 매체 이용시간을 전송효율, 메시지의 크기, 및 스테이션의 수를 파라미터로 하여서 조사하였다. 전송효율을 변수로 하였을 경우, 상위 우선순의 등급들의 평균 매체 이용시간은 우선순의 등급 별로 유사한 변화들을 나타내며 미시지의크기와 스테이션의 수를 변수로 한 경우는 큰 변화없이 거의 일정하였으나 메시지의 크기가 증가함에 따라 평균 매체 이용시간이 약간씩 증가하였으며, 스테이션 수의 증가에 대해서는 반대로 조금씩 감소하였다. 그러나 최하위 우선순위 등급의 경우, 3가지 변수에 대하여 평균 매체 이용시간이 상대적으로 큰 변화를 나타내었다.

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팔방산호충류에서 분리한 해양 스테롤 화합물의 혈소판 응집 억제작용 (Inhibition of Platelet Activation by Marine Sterols from Octocorals)

  • 박영현;장성근;서영완;신종헌
    • 약학회지
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    • 제41권5호
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    • pp.547-553
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    • 1997
  • The purpose of this investigation was to determine the inhibition on $Na^+,\;K^+$-ATPase, cyclic AMP phosphodiesterase and platelet activation by marine sterols isolated from octocorals. Three marine polyhydroxysterols, 7${\alpha},\;8{\alpha}-epoxy-3b{\beta},\;5{\alpha},\;6{\alpha}-trihydroxycholestane (1),\;24-methyl-7{\alpha},\;8{\alpha}-epoxy-3{\beta},\;5{\alpha},\;6{\alpha}-trihydroxycholest-22-ene (2),\;and\;7{\alpha},\;8{\alpha}-epoxy-3{\beta},\;5{\alpha},\;6{\alpha}-trihydroxycholest-22-ene (3)$, were isolated from the Gorgonian Acabaria undulata. Five marine sterols(compound 4, 5, 6, 7, 8) were isolated from the soft coral Alcyonium gracillimum. Three marine polyhydroxysterols (1, 2, 3) and pregna-1. 20-diene-3-one (8) exhibit a potent inhibitory effect on rabbit platelet aggregation induced by collagen and thrombin. Those polyhydroxysterols also exhibit a potent inhibitory effect on cyclic AMP phosphodiesterase. Compound 6 with an unusual cyclic enolether exhibit a inhibitory effect on $Na^+,\;K^+$-ATPase.

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도시주부의 가사노동 조직화 및 관리자 유형 분석 (Some Determinants of manager Style and household Work Organization on the Urban Homemakers in Korea)

  • 채옥희
    • 가정과삶의질연구
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    • 제6권1호
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    • pp.189-203
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    • 1988
  • The main objective of this dissertation is to find out the measurement methods of household work organization and manger style and the quantitative analysis methods of influential factors on household work organization and manager style. Subjects were homemakers living in metropolitan , medium and small cities. Questionnaires were sent to subjects and usable responses were 1139 out of 1239 received questionnaires. Data collected through both preliminary and main survey were analyzed by using frequencies, percentage, analysis of variance, chi-square test and pearson's correlation analysis. Results are as follows; 1) The degree of household work organization was distributed on upper middle level exceeding middle score. Among subsystems of household work such as task assignment , test regularization, task arrangement and task standardization. subjects show the highest positive attitude in task standardization. 2) The characteristics of management in household work have task centered orientation. By the prority of task centered orientation, the order was integrated style. dedicated style. It means that the most ideal style is an integrated style which accounts for one-third of the total homemakers. 3) Household organization's subsystems and household work manager style are related with socio-demographic variables. Integrated style is significantly related with homemaker's employment and having helpers for household work. homemakers who are employed and have helpers for household work exhibit high scores in task assignment and task arrangement. Dedicated style is significantly related with homemaker's age and the number of children. Homemakers who are older and have many children exhibit high scores in task assignment. Related style is significantly related with marriage duration, education level and income level. Homemakers who have a long marriage duration exhibit high scores in task assignment and who have high education and income level exhibit high scores in task regularization. Seperates style is significantly related with homemaker's age m marriage duration an family life cycle. homemakers who ar older, have a long marriage duration and are of late stage in family life cycle exhibit seperated style and high scores in organization. To summarize research findings, household work manger and household work organization are related with family life experiences, and task assignment is an influential variable on manager style. in conclusion, it is evident that household work organization emphasizes efficiency as cognitive component and such organization. Finally it is necessary to broaden this research considered social psychological variables. And also it needs to build household manger style models appropriate fro the characteristics of each style.

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콘텐츠 관련 공모전의 저작권 소유와 저작권 침해 분석 (An analysis on the possession and infringement of copyright on the contents-related contest exhibit)

  • 박경철;정선미
    • 만화애니메이션 연구
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    • 통권29호
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    • pp.243-266
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    • 2012
  • 공모전이 활성화되어 다양한 단체에서 다양한 목적을 가지고 공모전을 주최하고 있다. 공공기관부터 개인 사업자까지 다양한 주최의 공모전 요강을 분석해보면 저작권을 주최 측이 가지려는 경향이 매우 크다. 공모전 요강 중 일부는 일종의 계약서이다. 주최 측은 요강을 통해 저작권에 대한 견해를 분명히 밝히고 있는 데 반해, 개인은 계약서로 보기보다는 공모전에 출품하기 위한 형식이라고 단순하게 생각하는 경향이 있다. 이제는 공모전의 저작권에 대한 문제 제기가 필요한 시점이다. 기업의 콘텐츠 저작권만 보호하는 것이 중요한 것이 아니라 개인의 콘텐츠 저작권 또한 보호받고 존중받아야 한다는 점이다. 본 연구는 공모전 요강에서 드러나는 저작권 소유와 저작권 침해 항목을 분석함으로써 저작권에 대한 문제 제기를 하는 데 목적이 있다. 공모전의 저작권 조항은 계약서 역할을 한다. 공모전의 저작권 항목은 갑과 을의 관계인 주최 측과 수상자 모두가 이해하고 수용할 수 있는 내용이 바람직한 공모전의 방향이다. 이를 위해서 공공기관부터 개인 사업자까지 우월적인 지위를 가진 주최 측의 인식변화가 필요하다. 그러기 위해서는 첫 번째, 저작권의 표기: 분명하고 구체적인 용어를 사용해야 한다. 두 번째, 해석의 범위: 포괄적인 해석이 가능한 표기가 아닌 구체적인 표기를 해야 한다. 세 번째, 저작재산권의 대가: 주최 측이 수상작의 저작재산권 소유나 이용이 필요할 경우, 저작재산권의 권리 소유나 이용에 맞는 대가의 상금액을 고려한 적정한 재산적 사용의 권리를 표기해야 한다. 네 번째, 사용기간: 저작재산권의 사용기간을 표기해야 한다. 다섯 번째, 권리의 범위: 주최 측이 필요로 하는 저작재산권의 범위를 한정 표기해야 한다. 여섯 번째, 상호존중: 일방적 계약이 아닌 상호 배려와 존중에 입각한 쌍방계약의 개념으로 저작권 관련 항목을 표기해야 한다.