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The effect of Antiseptics on the Galactolipid Metabolism of Chlorella ellipsoidea Chloroplast and Thylakoid Envelope (Chlorella ellipsoidea 엽록체막과 틸라코이드막의당지질 대사에 미치는 식품보존제의 효과)

  • 최은아;장재선;이종삼
    • Journal of Food Hygiene and Safety
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    • v.13 no.3
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    • pp.221-231
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    • 1998
  • The biosynthesis of galactolipid and the composition of fatty acid in chloroplast and thylakoid envelope isolated from C. ellipsoidea treated with antiseptics (potassium sorbate: PS, sodium benzoate:SB, calcium propionate:CP) were analyzed. The contents of monogalactosyldiacylglycerol (MGDG), digalactosyldiacylglycerol (DGDG) and total lipid in treatment with antiseptics were lower to compared with the control. The major fatty acid utilized for biosynthesis of MGDG in chloroplast envelope were palmitoleic acid (ave. 15.55%), oleic acid (ave. 15.09%) in control. Otherwise, the major fatty acids in P.S treatment were utilized for oleic acid (ave. 13.71%), linolenic acid (ave. 14.36%), palmitoleic acid (ave. 18.26%), oleic acid (ave. 17.26%) in S.B treatment, and oleic acid (ave. 16.88%), palmitoleic acid (ave. 16.31%) in CP treatment. It was showed that the major fatty acids in chloroplast envelope DGDG were oleic acid (ave. 15.75%), linolenic acid (ave. 17.74%) in control, oleic acid (ave. 14.90%), palmitoleic acid (ave. 15.97%) in P.S treatment, palmitoleic acid (ave. 13.29%), oleic acid (ave. 15.74%) in S.B treatment, and oleic acid (ave. 14.52%), palmitoleic acid (ave. 14.03%) in C.P treatment. The major fatty acid utilized for biosynthesis of MGDG in thylakoid envelope were linolenic acid (ave. 14.78%), oleic acid (ave. 12.90%) in control. Otherwise, the major fatty acids were utilized for palmitoleic acid (ave. 13.00%), palmitic acid (ave. 13.00%) in P.S treatment, palmitoleic acid (ave. 12.94%), oleic acid (ave. 12.43%) in S.B treatment, and oleic acid (ave. 12.43%), palmitoleic acid (ave. 12.43%) in C.P treatment. It was showed that the major fatty acids in thylakoid envelope DGDG were linolenic acid (ave. 18.01 %), oleic acid (ave. 15.53%) in control, linolenic acid (ave. 19.20%), linoleic acid (ave. 14.14%) in P.S treatment, palmitoleic acid (ave. 9.03%), oleic acid (ave. 14.85%) in S.B treatment, oleic acid (ave. 13.90%), linolneic acid(ave. 12.66%) in C.P treatment.

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A 12.5-Gb/s Low Power Receiver with Equalizer Adaptation (이퀄라이저 적응기를 포함한 12.5-Gb/s 저전력 수신단 설계)

  • Kang, Jung-Myung;Jung, Woo-Chul;Kwon, Kee-Won;Chun, Jung-Hoon
    • Journal of the Institute of Electronics and Information Engineers
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    • v.50 no.12
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    • pp.71-79
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    • 2013
  • This paper describes a 12.5 Gb/s low-power receiver design with equalizer adaptation. The receiver adapts to channel and chip process variation by adaptation circuit using sampler and serializer. The adaptation principle is explained. It describes technique receiving ground referenced differential signal of voltage-mode transmitter for low-power. The CTLE(Continuous Time Linear Equalizer) having 17.6 dB peaking gain to remove long tail ISI caused channel with -21 dB attenuation. The voltage margin is 210 mV and the timing margin is 0.75 UI in eye diagram. The receiver consumes 0.87 mW/Gb/s low power in 45 nm CMOS technology.

the Effects of Shade and N Fertilization on the Dry Matter Production of Orchargrass (비음과 질소시비가 Orchargrass의 건물생산에 미치는 영향)

  • 이주삼
    • Journal of The Korean Society of Grassland and Forage Science
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    • v.11 no.3
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    • pp.175-181
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    • 1991
  • The purpose of this experiment was to evaluate the effects of shade and levels of N fertilization on the dry matter yield and chemical compositions of orchardgrass grown under floor of chestnut tree. Shading conditions consist of $S_0$, (full light), $S_1$, (about 6OC4 shade) and $S_2$, (about 70% shade). And, nitrogen fertilizer was applied at 3 levels, O($N_0$), 12($N_1$), and 30($N_2$) kg per 10a, respectively. The results are may be summarized as follows: 1. Maximum total dry matter yield of $S_0$, was obtained about 1.28 ton/lOa at $N_2$, level. But, total dry matter yields of N levels in $S_1$, and $S_2$, were decreased about 42-45% compared with $S_0$. 2. The response of the dry matter yield to N fertilization were differences between shading and levels of N. Thus, the dry matter yield of $S_1$, increased almost linear up to about 30 kg/l0a level, while the dry matter yield of S, was increased slightly up to 30 kgIl0a. But. $S_2$, was increased up to 12 kg/lOa and then decreased slightly with N fertilization over the 12 kg/l0a. 3. Average increase in total dry matter yield to N fertilization were 23.85 kg, 7.97 kg and 5.08 kg DM for $S_0$, $S_1$, and $S_2$, respectively. 4. The level of 12 kg N/lOa is the limiting N level to obtain dry matter production under 60-709 shading conditions. 5. The contents of crude protein arid nitrate nitrogen were increased with shading and incremental N fertilization up to 30 kg/l0a. But, water soluble carbohydrate content was decreased greatly with high shading and high levels of N. 6. Nitrate nitrogen content indicated highly significant positive correlation with crude protein, but significant negative correlation with water soluble carbohydrate content. 7. At 30 kg N level with $S_1$, was necessary to exceed the potentially toxic nitrate nitrogen level of 0.20%.

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The Effect on Growth Inhibition of S. mutans by Lotus Leaf and Dandelion Extracts (연잎과 민들레 추출물에 의한 S. mutans 성장억제 효과)

  • Chi, Bo-Ram;Jo, Da-Young;Cha, So-Young;Chi, Min-Ji;Jeong, Hye-Won;Kang, Kyung-Hee
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.12 no.12
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    • pp.5773-5778
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    • 2011
  • Results regarding the anti-oxidative, anti-allergic, anti-bacterial and anti-cancer effects of lotus leaf and dandelion have been reported through active research on the medical effects of medicine prepared from crude drugs. This paper aimed to examine the anti-bacterial effect of lotus leaf and dandelion extracts on S. mutans by evaluating the colony forming unit and growth curve. In accordance with the growth inhibition rate of S. mutans according to the addition of lotus leaf and dandelion extracts, the higher the extract concentration was, the higher the growth inhibition rate of S. mutans was. This paper therefore verifies that lotus leaf and dandelion extracts have an effect in inhibiting the growth of S. mutans.

The Design Characteristics of Form of Jean Fashion in Fashion Collections (패션 컬렉션에 나타난 진패션의 형태적 디자인 특성)

  • Pu, Chen;Kim, Ae-Kyung;Lee, Kyoung-Hee
    • The Journal of the Korea Contents Association
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    • v.12 no.12
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    • pp.577-586
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    • 2012
  • This research was focused on jean jacket and jean pant design characteristics in the collection. To offer a basic proposal for the development of jean jackets and pants, pictures of fashion web pages from 2007 to 2011 were used, and data were analysed by the usage of the frequency and percentage of the SPAW Statistics 18. The results of the research were as follows. Men's jackets were mainly medium in length with a tetragonal silhouette and simple detail. On the contrary, women's jackets were mainly of an X silhouette, short in length, and with varied details. Men's jean pants were mainly represented by a straight, comfortable silhouette while women's jean pants were characterized by a variety of silhouettes, fit, and lengths.