• 제목/요약/키워드: P-S6

검색결과 18,980건 처리시간 0.049초

흰쥐현장지질 감소에 관한 n-3/n-6 와 P/S 섭취비율의 반응표면분석 (Response Surface Analysis of Dietary n-3/n-6 and P/S Ratio on Reduction of Plasma Lipids in Rats)

  • 박병성
    • 한국응용과학기술학회지
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    • 제21권2호
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    • pp.148-155
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    • 2004
  • Response surface analysis was used to study dietary ratios of n-3/n-6 fatty acid and P/S to minimize plasma triglycerides, total cholesterol and LDL ${\cdot}$ VLDL-C levels and maximize plasma HDL ${\cdot}$ C levels of rats. Because the dietary components were not statistically independent, they were studied in combinations of two variables. The two-variable combinations were the most useful in locating the desired maximum or minimum plasma triglycerides, total cholesterol and LDL ${\cdot}$ VLDL-C response in terms of the proportions of the dietary components. Response surface contours and three dimensional plots were developed for each plasma lipid response. The contours and three dimensional plots were used to help determine those combinations of the dietary fatty acid ratios that would produce the desired minimum or maximum lpid responses. The statistical analyses indicated that the minimized plasma cholesterol response levels could be attained with a diet consisting of 2.26 n-3/n-6 fatty acid and 2.15 P/S ratios.

납작벌레류(Stylochus ijimai, Pseudostylochus obscurus)의 산란 및 유생발생에 관하여 (SPAWNING AND LARVAL DEVELOPMENTS OF TWO SPECIES OF POLYCLAD WORMS, STYLOCHUS IJIMAI & KABURAKI AND PSEUDOSTYLOCHUS OBSCURUS (STIMPSON))

  • 양한춘
    • 한국수산과학회지
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    • 제7권1호
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    • pp.7-14
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    • 1974
  • 1. S. ijimai의 산난기는 5월하순에서 10월하순까지로서 주산난기는 7월중순에서 9월하순 사이였고 P. obscurus 는 6월하순에서 10월상순까지로 주산난기는 7월하순에서 9월중순 사이였다. 2. S. ijimai의 1회 산난량은 약 $96,000\~132,000$립이였고 체장이 큰 것의 산난량이 대체로 많았다. 3. 산난직후의 난의 크기는 S. ijimai는 $102\mu$이고 P. obscurus는 $108\mu$이었다. 4. 난이 성숙분열을 시작하여 양배형성기까지의 발생과정은 S. ijimai와 P. obscurus가 유사하였다. 5. S. ijimai나 P. obscurus 두 종류가 모두 다 단일난이고 S. ijimai는 Gotte유생으로 변태발생을 하며 P. obscurus는 직접발생을 한다. 6. 산난후의 발생경과시은 S. ijimai는 48시간 후에 Mesentoblast가 형성되고 7일만에 부화하였다. P. obscurus 는 72시간 후에 Mesentoblast가 형성되고 14일만에 부화하였다. 7. S. ijimai지 부화유생은 14일 간의 부유기를 가지며 이 기간 중 강한 주광성이 있었으나 P. obscurus는 70의 부유기를 가지면서 전연 주광성을 나타내지 않았다. 8. S. ijimai의 부화직후 유생의 크기는 $138\mu$이고 저서초기에는 $152\mu$이며, P. obscurus는 각각 $170\mu$$185\mu$이었다. 9. 저서생활로 들어갈 때의 현저한 특미으로서 S. ijimai는 돌기가 소실되고 몸이 편평하게 되면서 성체형으로 변태하였고, P. obscurus는 이 시기에 뇌역의 4안점 중에서 양측 바깥쪽의 2안점이 퇴화되었다. 10. 저서초기유생은 S. ijimai가 P. obscurus 두 종류 모두 저질이 이토인 곳에서만 발견되었다.

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제초성, N-(2,6-dimethoxypyrimidin-2-yl)aminocarbonyl-2-치환(Z)-6-(1-hyd roxy-2-fluoroethyl)benzenesulfonamide 유도체의 가수분해 반응 메카니즘 (Kinetics and Hydrolysis Mechanism of Herbicidal N-(2,6-dimethoxypyrimidin-2-yl)aminocarbonyl-2-(1-hyd roxy-2-fluoroethyl)benzenesulfonamide Derivatives)

  • 이찬복;류재욱;김대황;성낙도
    • Applied Biological Chemistry
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    • 제38권5호
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    • pp.455-462
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    • 1995
  • 새로운 6종의 제초성, N-(2,6-dimethoxypyrimidin-2-yl)aminocarbonyl-2-치환(Z)-6-(1-hyd roxy-2-fluoroethyl)benzenesulfonamide 유도체(S)를 합성하여 $45^{\circ}C$의 15%(v/v) acetonitrile 수용액속에서 일어나는 가수분해 반응상수를 측정하고 pH-효과, 용매효과, ortho-치환기 효과, 열 역학적 활성화 파라미터(${\Delta}H^{\neq}$${\Delta}S^{\neq}$) 등의 반응 속도론적인 자료들과 pKa상수(4.80) 및 가수분해 반응 생성물(2-(1-hydroxy-2-fluoroethyl)benzenesulfonamide 및 4,6-dimethoxyaminopyrimidine) 분석 등의 비 반응 속도론적 결과로부터 반응속도식을 유도하고 반응메카니즘을 제안하였다. pH 8.0 이하에서는 일반 산-촉매반응($A-S_E2$)과 특정 산-촉매 반응으로 conjugate acid ($SH^+$)와 사면체 중간체(I)를 경유하는 A-2형(또는 $A_{AC}2$형)반응 그리고 pH 9.0 이상에서는 물 분자가 일반염기(B)로 작용하여 conjugate base (CB)를 경유하는 $(E_1)_{anion}$ 반응으로 진행되는 가수분해 반응 메카니즘을 검토하였으며 pH $7.0{\sim}9.0$사이의 용액중에서는 이들 두 반응이 경쟁적으로 일어남을 알았다.

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Paenibacillus woosongensis의 만난분해 효소활성 (Mannanolytic Enzyme Activity of Paenibacillus woosongensis)

  • 윤기홍
    • 미생물학회지
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    • 제46권4호
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    • pp.397-400
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    • 2010
  • 만난의 분해활성을 갖는 Paenibacillus woosongensis의 배양 상등액으로부터 mannanase, ${\beta}$-mannosidase와 ${\alpha}$-galactosidase 활성이 관찰되었다. 배양상등액 내의 locust bean gum를 분해하는 mannanase는 pH 5.5와 $60^{\circ}C$, para-nitrophenyl-${\beta}$-D-mannopyranoside를 분해하는 ${\beta}$-mannosidase는 pH 6.5, $50^{\circ}C$, para-nitrophenyl-${\alpha}$-D-galactopyranoside를 분해하는 ${\alpha}$-galactosidase는 pH 6.0-6.5와 $50^{\circ}C$에서 각각 최대활성을 보였다. 배양상등액의 만난 분해효소는 mannotriose, mannotetraose, mannopentaose, mannohexaose와 같은 만노올리고당을 분해할 뿐 아니라 mannobiose도 분해하였다. 또한 melibiose, raffinose, stachyose 등의 ${\alpha}$-1,6 결합형 galacto-oligosaccharides를 분해하여 galactose를 생성하였다. 이러한 결과로 보아 P.woosongensis는 galactomannan을 완전히 분해하는데 필요한 3종류 효소를 모두 생산하는 것으로 판단된다.

학령전기 아동의 사고 경향 예측도 (Accident Proneness Prospect in Preschooler)

  • 이자형;김신정;이정은
    • 대한간호학회지
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    • 제28권3호
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    • pp.662-675
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    • 1998
  • The purpose of this study was to provide basic data on preschool children for accident prevention and to improve their health through a sound, safe living environment with safety education established through more systematic methods. Data were collected from 516 preschoolers from 4 to 6 years old using APP paper test which consists of a question and drawing. The children's general characteristics and accident proneness prospect were investigated. The relationship between the children's general characteristics and the accident proneness prospect were analyzed. The findings of the study are as follows : 1. The institution which children attended had a significant difference in accordance with the living safety (p=.015) and behavioral character(p=.033). 2. The housing pattern in which children lived had a significant difference in accordance with the movement speed(p=.027). 3. The children's age had a significant difference in accordance with the living safety(p=.002), traffic safety(p=.001), the reasoning power(p=.000), movement speed(p=.00), movement stability(p=.000) and attentional power(p=.000). 4. The children's sex had a significant difference in accordance with the movement stability and behavioral character (p=.003, p=.008). 5. The children's past accidental experience had a significant difference in accordance with the behavioral character(p=.001). 6. General assessment of the APP test had a significant difference in accordance with the children's age(p=.000) and children's past accidental experience(p=.020).

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Set-in Sleeve의 형태에 따른 시각적 평가 (Visual Evaluation to the types of Set-in Sleeve)

  • 김예경;이영주
    • 한국생활과학회지
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    • 제17권2호
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    • pp.305-313
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    • 2008
  • This subject investigated visual evaluation of preference and fitness level of set-in sleeve in sleeve types(form)and studied suitable sleeve type at silhouette and targeted female students in twenties. The results of study were as follows: 1. Visual evaluation factors in set-in sleeve of sleeve types were selected 6 factors; the 1st factor is decorativeness, the 2nd factor is attractiveness, the 3rd factor was activeness, the 4th factor was feminine, the 5th factor was charming and 6th factor was a figural element. Decorativeness and attractiveness factors in visual evaluation of sleeve types were the most important level. 2. The visual evaluation differences of sleeve types in set-in sleeve were as follows; in the 1st factor, S and P2 were the most decorative sleeve type. in the 2nd factor, S, P2 and P3 are the most attractive sleeve type. in the 3rd factor, B and P3 were the most active sleeve type. in the 4th factor, L was the most feminine sleeve type. in the 5th factor, P1, L and P3 were charming sleeve type. in the 6th factor, P3 was evaluated that it shows narrowened shoulder sleeve types. 3. The analysis result of preference and wearing level in each sleeve types were as follows. 20's female university students like to wear S, P1, P2 and P3 sleeve types and the most favorite sleeve types are S, P2 and P3. 4. The analysis result of silhouette set-in sleeve in sleeve types; S, B and P2 in H-type silhouette, P2, S and P1 in A-type silhouette, B and P3 in O-type silhouette, L and P3 in X-types silhouette were show the most suitable sleeve types.

김치에서 분리한 Lactobacillus brevis의 내산성 (Acid Tolerance of Lactobacillus brevis Isolated from Kimchi)

  • 이갑상;신용서;이철호
    • 한국식품과학회지
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    • 제30권6호
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    • pp.1399-1403
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    • 1998
  • 숙성된 김치에서 Lactobacillus brevis을 분리, 동정하고 내산성과 그와 관련된 glycolysis assay, 세포막 투과성, $H^+-ATPase$ 활성을 평가하였다. pH가 4.0과 3.0으로 조정된 Lactobacilli MRS broth에서 Lactobacillus brevis는 배양 2시간 후 각각 2.61 log cycles/mL 및 5.89 log cycles/mL의 많은 수의 균이 사멸하였으나 pH 6.0과 5.0에서는 배양 2시간 동안 거의 변화가 없었다. Lactobacillus brevis의 glycolysis을 위한 최적 pH는 약 6.5였으며 pH $4.5{\sim}3.0$에서도 최대값에 대해 $15{\sim}20%$의 glycolysis의 수준을 나타내었다. 세포내의 $Mg^{++}$ 누출은 pH 7.0과 pH 6.0에서는 일어나지 않아 세포막 투과성이 안정적이였으나 pH가 감소할수록 그 누출양이 증가하여 pH 4.0과 pH 3.0에서는 전체 $Mg^{++}$ 함량 중 각각 24.3%와 71.2%가 세포외로 누출되어 세포막 투과성이 손상되었음을 알 수 있었다.

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$Y_{1-X}G_X$, $Y_{1-X}P_X$ 칼라필터를 통한 시감도 최적화 연구 (Research on Optimizing Luminosity Factor Through Color Filter $Y_{1-X}G_X$, $Y_{1-X}P_X$)

  • 김용근;박현주
    • 한국안광학회지
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    • 제14권1호
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    • pp.47-56
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    • 2009
  • 목적: 시감도가 최적화된 투과필터의 칼라위치를 추정한다. 방법: 시감도 최적화를 위한 칼라를 Y(Yellow), G(green)과 P(Red)를 이용하여 CR-39에 담그기 법으로 $Y_{1-x}G_{x}$, $Y_{1-x}P_{x}$를 제작하였다. 투과광에서 최종 비시감도의 추정방법 모델은 파장에 따른 눈의 시감도와 렌즈의 투과율 세기의 곱($P_f$ ($P_f({\lambda}=T({\lambda}){\cdot}P({\lambda}).)$.)으로 나타낸다. 400~700 nm 영역에서 투과광의 평가는 비시감도 곡선의 면적, Peak, 폭, 최고높이 값으로 평가한다. 결과: $Y_{1-x}G_{x}$에서 x=0.04, x=0.08, x=0.10, x=0.12, x=0.14, x=0.5에서 ${\beta}=S_1/S_0{\cdot}100$ 값은 각각 76.1, 77.9, 80.7, 81.6, 80.2, 18.6을 갖는다. $Y_{1-x}P_{x}$에서 x=1.00, x=0.2, x=0.6, x=0.8에서 ${\beta}=S_1/S_0{\cdot}100$ 값은 각각 74.3, 74.0, 70.5, 33.0을 갖는다. 투과광의 면적과 최고높이를 평가한 결과는 $Y_{1-x}P_{x}$보다 $Y_{1-x}G_{x}$가 더 큰 값을 갖게 되어 비시감도 최적화에 접근하였다. 결론: 비시감도 최적화는 $Y_{1-x}G_{x}$에서 X=0.12~0.14의 값을 갖는다.

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Role of hydrogen peroxide in Rac1 mediated activation of p70s6k signaling pathway

  • Bae, Gyu-Un;Kwon, Hyoung-Keun;Kim, Gwan-Tae;Kim, Yong-Kee;Yoon, Jong-Woo;Cho, Eun-Jung;Lee, Hyang-Woo;Han, Jeung-Whan
    • 대한약학회:학술대회논문집
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    • 대한약학회 2003년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.1
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    • pp.222.1-222.1
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    • 2003
  • The signal transduction pathway leading to the activation of the p70s6k plays an important role in the progression of cells from G0/G1 to S phase of the cell cycle but remains incompletely characterized. We investigated the role of the Rho family G protein Rac1 in H2O2-mediated p70s6k activation. Transient expression of a dominant negative mutants of the small GTP-binding proteins Rac1 (Rac1N17) and Cdc42(Cdc42N17) showed reduced levels of slower migration on Western blots of one-dimensional SDS-PAGE in p70s6k and ERK1/2 by PDFG stimulation. (omitted)

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The Effect of miR-361-3p Targeting TRAF6 on Apoptosis of Multiple Myeloma Cells

  • Fan, Zhen;Wu, Zhiwei;Yang, Bo
    • Journal of Microbiology and Biotechnology
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    • 제31권2호
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    • pp.197-206
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    • 2021
  • microRNA-361-3p (miR-361-3p) is involved in the carcinogenesis of oral cancer and pancreatic catheter adenocarcinoma, and has anti-carcinogenic effects on non-small cell lung cancer (NSCLC). However, its effect on multiple myeloma (MM) is less reported. Here, we found that upregulating the expression of miR-361-3p inhibited MM cell viability and promoted MM apoptosis. We measured expressions of tumor necrosis factor receptor-associated factor 6 (TRAF6) and miR-361-3p in MM cells and detected the viability, colony formation rate, and apoptosis of MM cells. In addition, we measured expressions of apoptosis-related genes Bcl-2, Bax, and Cleaved caspase-3 (C caspase-3). The binding site between miR-361-3p and TRAF6 was predicted by TargetScan. Our results showed that miR-361-3p was low expressed in the plasma of MM patients and cell lines, while its overexpression inhibited viability and colony formation of MM cells and increased the cell apoptosis. Furthermore, TRAF6, which was predicted to be a target gene of miR-361-3p, was high-expressed in the plasma of patients and cell lines with MM. Rescue experiments demonstrated that the effect of TRAF6 on MM cells was opposite to that of miR-361-3p. Upregulation of miR-361-3p induced apoptosis and inhibited the proliferation of MM cells through targeting TRAF6, suggesting that miR-361-3p might be a potential target for MM therapy.