• Title/Summary/Keyword: 1909

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Studies on Protective Effect of Bupleurum falcatum Extract (SHI-1909) against Experimental Inflammtory Bowel Disease Model (시호추출물 (SHI-1909)의 염증성 대장염 실험동물 모델에 대한 치료효과)

  • Cho, Seong-Wan;Kim, Young-Kwon
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.10 no.3
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    • pp.613-619
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    • 2009
  • The Efficacy of SHI-1909 was investigated in comparision with predinisolone in acetic acid and Picrylsulfonic acid solution (TNBS)-induced rat inflammatory bowel disease (IBD) for 5 days. 7% Acetic acid and 5% TNBS solution were administered with polyethylene (P.E) tube inserted to rats intracolon, which causing colitis to the rats. The acetic acid and TNBS control group (the saline treated colitic rat) exhibited ulceration and inflammation of the distal colon with formation of granuloma and pathologic connections. We checked the inflammatory parameters like rat's weight, food intake quantity change during administration. After 5 days, we sacrificed the rats and checked the colon's length, ulcer and pathologic condition. Oral treatment with SHI-1909 resulted in significant recovery of macroscopic parameters like weight and diet intake change. Especially, SHI-1909 had a more potent effect than prednisolone on macroscopic colonic damage score. We can suggest that SHI-1909 could be a promising drug in the treatment of IBD.

Probiotic Characteristics of Lactobacillus acidophilus KY1909 Isolated from Korean Breast-Fed Infant (한국인 유아 분변에서 분리한 Lactobacillus acidophilus KY1909의 프로바이오틱 특성)

  • Park, Jong-Gil;Yun, Suk-Young;Oh, Se-Jong;Shin, Jung-Gul;Baek, Young-Jin
    • Korean Journal of Food Science and Technology
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    • v.35 no.6
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    • pp.1244-1247
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    • 2003
  • The purpose of this study was to isolate lactic acid bacteria that produced L(+) lactic acid from infant feces. Thirteen colonies were isolated with a MRS-plate containing 0.5% $CaCO_3$ to determine their ability to produce lactic acid. Based on their lactic acid production, 10 strains of Lactobacillus were identified to assess the ratio of lactate isomer using HPLC. A strain producing L-lactic acid was identified as Lactobacillus acidophilus, using API carbohydrate fermentation patterns and physiological tests, and named KY1909. The strain exhibited good acid tolerance in an artificial gastric juice as well as high bile resistance in MRS containing 0.5% bile acids. L. acidophilus KY1909 produced D(-) and L(+) lactic acid at a ratio of 6 : 94; whereas commercial strains of Lactobacillus acidophilus produced D(-) and L(+) lactic acid at a ratio of 1 : 1. These results demonstrate the L. acidophilus KY1909 can be utilized in fermented milk products and dietary supplements as a probiotic culture.

Nematode Fauna of High Altitude Avian Hosts in garhwal Himalayan Ecosystems I. eustrongylides spinispiculum n. sp. and Revised Key to the Species of Genus Eustrongylides Jagerskiold (1909)

  • Rautela, Anand S.;Malhotra, Sandeep K.
    • Parasites, Hosts and Diseases
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    • v.22 no.2
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    • pp.242-247
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    • 1984
  • Analysis of variance has been applied as a new tool for precise substantiation of tabometric differences between Eustrongylides spinispiculum n. sp. and close species, as indicated by the polythetic divisive classificatory system. A revised key to the species of genus Eustrongylides Jagerski61d (1909) has been Presented.

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BLR Density Variations of the Seyfert 1 Galaxies NGC 4151 and NGC 5548 (Seyfert 1 은하 NGC 4151, NGC 5548의 BLR 밀도 변화)

  • Son, Dong-Hoon;Hyung, Siek
    • Journal of the Korean earth science society
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    • v.25 no.6
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    • pp.495-501
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    • 2004
  • Using numerous ground-based or space-based telescopes by many astronomers, AGN spectroscopic monitoring campaigns have been carried out over many years to study the variability of continua and emission lines. We investigate the SWP IUE spectra of a large aperture configuration for the Seyfert 1 galaxies NGC 4151 and NGC 5548. We estimate the BLR electron number densities and their variation from the line ratios of C III] 1909 to Si III] 1892. With the ratios of C IV 1550 to C III] 1909 which give us the information on the ionization parameter of BLR, we try to find the physical conditions of the BLR and activities of he super massive black hole surroundings. The BLR density variations scale as 4 and 8 for NGC 4151 and NGC 5548, respectively. Based on the BLR size and C III] line profiles, we found both black hole masses as about $10^7$ $M_{\odot}$.

Synthesis and Properties of Eco-friendly Polyurethane Adhesive without Solvent : Effect of DPE-41, TDI, Initiator and Plasticizer Content (용제를 사용하지 않는 친환경 폴리우레탄 접착제의 합성 및 물성 : DPE-41, TDI, 개시제 및 가소제량의 영향)

  • Ryu, Ki-Jung;Park, Chan-Young
    • Journal of Environmental Science International
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    • v.23 no.11
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    • pp.1909-1918
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    • 2014
  • In this experiment no solvent based polyurethane(PU) adhesives were prepared with the polyol, isocyanate, dioctyl phthalate(DOP), 2-hydroxyethylacrylate(2-HEA) and other acrylate monomers. The softenening point of the PU adhesives measured by Ring & Ball method were examined in the present study. And adhesion strength and mechanical properties such as tensile strength and 100% modulus of the PU adhesives were evaluated by Universal Test Machine. The experimental results showed that increase of both DPE-41, benzoylperoxide(BPO) and toluene diisocyanate(TDI) increased softenening point, adhesion strength, tensile strength and 100% modulus. However as DOP content increased sofenening point, adhesion strength decreased and tensile strength, 100% modulus also decreased.

Analysis on Current Limiting Characteristics According to the Influence of the Magnetic Flux for SFCL with Two Magnetic Paths

  • Ko, Seok-Cheol;Han, Tae-Hee;Lim, Sung-Hun
    • Journal of Electrical Engineering and Technology
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    • v.9 no.6
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    • pp.1909-1913
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    • 2014
  • In this study, a superconducting fault current limiter (SFCL) having two magnetic paths was proposed, and its current limiting characteristics were analyzed. For the SFCL to effectively perform the current limiting operation, it must be designed considering the magnetic saturation of the E-I core. Further, the influence of the magnetic flux on its peak current limiting characteristics was investigated. In addition, the magnetic flux curves of the SFCL obtained from the fault current limiting experiments were analyzed, and the subtractive polarity winding case was observed to not only further reduce the saturation potential of the core but also perform the peak current limiting functions well when compared with the additive polarity winding case.