• 제목/요약/키워드: DNP3.0

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[논문철회]전력계통 네트워크 통신방식 변화에 따른 사이버위협 분석 및 대응방안 제시 ([Retracted]Cyber Threat Analysis on Network Communication in Power System and Countermeasures Suggestions)

  • 지일환;전승호;서정택
    • 스마트미디어저널
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    • 제12권2호
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    • pp.91-102
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    • 2023
  • 전력거래소 에너지 관리 시스템(Energy Management System, EMS)는 발전소 및 변전소와 통신을 수행하며 전력공급의 안정성 및 연속성, 실시간성, 경제성을 위하여 송·변전시스템의 변전소 및 발전소 운전상태를 모니터링하고 발전소와 변전소를 제어한다. 현재 전력거래소 EMS는 발전소 및 변전소와 시리얼 통신기반 DNP(Distributed Network Protocol) 3.0 프로토콜을 기반으로 통신을 수행하고 있다. 하지만, 시리얼 통신장비 수급의 어려움, 신재생 발전설비를 포함한 통신을 수행할 신규 설비의 지속적인 증가로 인해 시리얼 포트 및 모뎀의 설치 공간 부족 등의 문제가 제기되고 있다. 이에 본 논문에서는 전력거래소 EMS의 기존 시리얼 통신방식 대신 TCP/IP기반의 통신 방식을 제시하며, 통신방식 변화에 따른 발생 가능한 보안 위험 분석 및 보안 위험에 대한 대응방안을 제시한다.

數種의 韓藥 抽出物이 抗알레르기 反應에 미치는 影響 (The study on the anti-allergic effect of a number of herb-extract.)

  • 노태석;노석선
    • 한방안이비인후피부과학회지
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    • 제15권1호
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    • pp.1-30
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    • 2002
  • This experimental study was done to research effects of a number of extract on the anti-allergic effect. The results were obtained as follows: 1. In effect of herb-extract on compound $\frac{48}{80}$-mediated histamine release from Evans blue skin assay, Isatis Japonica Miquel, Dictamnus dasycarpus Turcz, Spirodela polyrhiza, Cimicifuga heracleifolia, Bupleurum chinense, Magnolia liliflora, Forsythia koreana, Aster tataricus L., Xanthium strumarium L.(MtOH), Trichosanthes kirilowii, Phellodendron amurense Rupr, Schizonepeta tenuifolia Var, Betula platyphylla show considerable visible anti-allergic effect. In the result of quantification of histamine induced compound $\frac{48}{80}$, Spirodela polyrhiza, Isatis Japonica Miquel, Trichosanthes kirilowii, Bupleurum chinense, Forsythia koreana inhibit histamine release effectively. 2. In effect of Herb-Extract on compound $\frac{48}{80}$-mediated histamine release from RPMC, Spirodcla polyrhiza, Cimicifuga heracleifolia inhibit histamine release effectively. 3. In effect of Herb-Extract on anti-DNP IgE-mediated histamine release from Evansblue skin assay. Spirodela polyrhiza, Cimicifuga heracleifolia(0.1mg/ml). Forsythia koreana, Aster tataricus L., Xanthium strumarium L.(0.1mg/ml), Trichosanthes kirilowii(0.1mg/ml) show considerable visible anti-allergic effect. In the result of quantification of histamine induced anti-DNP IgE, Spiradela polyrhiza, Isatis Japonica Miquel, Trichosanthes kirilowii, Bupleurum chinense, Forsythia koreana inhibit histamine release effectively 4. In the result of genetic manifestative inhibition about the human mast cell-1(HMC-1), Cimicifuga heracleifolia has considerable effect in IL-4 in IL-5, and Tussilage farfara L. has in IL-4. According to the above results, it is suggested that several Herb-Extract have anti-allergic effect.

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항장요법(肛腸療法)에 의한 소시호탕(小柴胡湯)의 아나필락시 쇼크 억제(抑制)에 대한 실험적(實驗的) 연구(硏究) (Experimental Study of Inhibitory Effect on Anaphylactic Shock of Sosihotang by Anal Therapy)

  • 강태희;문석재;문구;원진희;김형민
    • 대한한의학회지
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    • 제19권2호
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    • pp.439-449
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    • 1998
  • Anal Therapy is another way of taking medicine. It is a traditional pathway but not available in common situation. Nevertheless, It has many benifect and usefulness, it has not treated so much. Through Anal Therapy, the valid compound of Herb med can be reach to the desination in theory of the organism and loca1 medical action. The former is called Jung-Chei Theory(整體論), which is the one of the most important basements in building traditional Korean medicine. As there are many kinds of Anal therapy, this study use reservation type. Sosihotang(SSHT) is one of the well-known korean medicines for a long time. It is used for the treatment of such dieases as infectious diseases, hepatic diseases and gastroenteritis and so on. In this study, the author investigated the effect of an aqueous extract of SSHT by Anal therapy(Reservative Enema) in anaphylactic shock. The following results were obtained 1. SSHT inhibited anaphylactic shock 100% with a dose of 1.0 g/kg 1 hr before intraperitoneal injection of compound 48/80. SSHT significantly reduced serum histamine contents induced by compound 48/80. 2. SSHT (0.1 g/kg) also inhibited to 30.9% (P<0.05)) local cutaneous anaphylactic reaction activated by anti-dinitrophenyl (DNP) IgE. 3. The validity rate of reservative enema is as much as oral pathway. 4. In addition, SSHT dose-dependently inhibited the histamine release from the peritoneal mast cells by compound 48/80 or anti-DNP IgE. These results provide evidence that Anal Therapy(Reservative enema) of SSHT may be beneficial in the treatment of systemic and local anaphylactic reaction. Moreover, I wish another much sincere study of Anal Therapy (Reservative enema) would be obtained.

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Penicillium속(屬)이 생산(生産)하는 alkaline pretease에 관(關)하여 (Studies on the pretense produced by Penicillium species)

  • 김경순
    • 한국식품영양과학회지
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    • 제6권1호
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    • pp.27-33
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    • 1977
  • The alkaline protease was isolated from the culture of Penicillium species (P-46) grown in the wheat bran media. The crude purification of this enzyme was carried out by extraction with distilled water and precipitated with 0.7-saturated ammonium sulfate, then dialysis for 3days. The activity of this enzyme was determined by Folin's colorimetric method. The results were as follows; 1. The optimum pH and temperature of this enzyme were pH 8.4 and $45^{\circ}C$. 2. This enzyme was stable at pH $7.0{\sim}9.0$. 3. This enzyme was not inactivated by treatment in lower temperature than $30^{\circ}C$. 4. The activity of this enzyme was strongly inhibited by $Hg^{++}$ and $Cu^{++}$, but slightly by $Ag^+$ 5. This enzyme was not inhibited by cystein, thiourea, ${\varepsilon}-aminocaproic$ acid, 2, 4-DNP, EDTA but strongly inhibited by PCMB.

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생물방제균 Pseudomonas sp. 3098이 생산하는 Chitinase의 정제 및 특성 (Purification and Characterization of Chitinase from Antagonistic Bacteria Pseudomonas sp. 3098.)

  • 이종태;김동환;도재호;김상달
    • 한국미생물·생명공학회지
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    • 제26권6호
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    • pp.515-522
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    • 1998
  • 길항미생물로 분리.동정된 Pseudomonas sp. 3098이 생산하는 chitinase를 황산암모늄 침전, DEAE-cellulose column chromatography, Bio-Gel P-100에 의한 겔여과, 1차 및 2차 hydroxyapatite column chromatography 과정을 거쳐 회수율 5.8%,정제도 15.7배의 정제효소를 얻었고, 효소의 순도는 SDS-PAGE로 확인하였으며, 분자량은 45kDa으로 추정되었다. 정제된 chitinase의 최적 온도와 pH는 45$^{\circ}C$와 5.0이었고, 정제효소는 pH 5.0~9.0 사이에서 안정하였고, 5$0^{\circ}C$, 3시간 및 6$0^{\circ}C$, 30분까지는 비교적 안정하였다. 금속염 및 화학물질의 영향을 조사한 결과 Fe$^{2+}$, Ag$^{1+}$ 및 단백질변성제인 Hg$^{2+}$ 이온에 의해 효소활성이 크게 저해되었고, p-CMB, iodoacetic acid, urea, 2,4-DNP 및 EDTA에 의해 효소활성이 약간 저해되었다. 기질특이성을 조사한 결과 colloidal chitin 및 shrimp shell 유래의 chitin은 분해가능하였으나 crab shell 유래의 chitin, chitosan등은 분해하지 못하였다. Colloidal chitin에 대한 본 효소의 Km값은 0.11%였고, 분해율은 24시간 반응시 34%였다.

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가미옥액탕이 즉시형 과민반응에 미치는 영향 (Effect of Gamiokyaek-tang on Immediate Type Hypersensitivity)

  • 총배빈;강경화;김원일
    • 한방안이비인후피부과학회지
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    • 제19권3호통권31호
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    • pp.13-21
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    • 2006
  • Object : We investigated the effect of Gamiokyaek-tang (GOYT) on immediate type hypersensitivity. Methods : We investigated anti-dinitrophenyl (DNP) IgE-mediated passive cutaneous anaphylaxis and acetic acid-induced vascular permeability in rodents. Also perfonned MTT assay and b-hexosaminidase activity is measured in RBL-2H3. Results : GOYT inhibited passive cutaneous anaphylaxis and acetic acid-induced vascular permeability by oral administration. All the concentrations of GOYT from 0.1 to 5 mg/ml didn't have an effect on cell viability and cytotoxicity. b-hexosaminidase release in RBL-2H3 was significantly reduced by 2 and 5 mg/ml of GOYT. Conclusion : These results indicate that GOYT have inhibition effects on immediate type hypersensitivity .

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가미옥액탕(加味玉液湯)이 알레르기 반응에 미치는 영향 (Effect of Gamiokyaek-tang on Allergic Reaction)

  • 총배빈;강경화;홍상훈;김원일
    • 한방안이비인후피부과학회지
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    • 제20권1호통권32호
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    • pp.38-50
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    • 2007
  • Object : We investigated the effect of Gamiokyaek-tang(GOYT) on immediate type hypersensitivity. Methods : We investigated anti-dinitrophenyl(DNP) IgE-mediated passive cutaneous anaphylaxis(PCA) and acetic acid-induced vascular permeability in rodents. Also we measured MTT assay, ${\beta}-hexosminidase$ activity and IL-4 from RBL-2H3 and nitric oxide from Raw264.7. Results : GOYT inhibited passive cutaneous anaphylaxis and acetic acid-induced vascular permeability by oral administration. All the concentrations of GOYT from 0.1 to 5mg/ml didn't have an effect on cell viability and cytotoxicity. In RBL-2H3, ${\beta}-hexosminidase$ release and IL-4 production were significantly reduced by 1, 2 and 5mg/ml of GOYT. In Raw264.7, nitric oxide level was decreased by 5mg/ml of GOYT. Conclusion : These results indicate that GOYT have inhibition effects on immediate type hypersensitivity.

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황금약침(黃芩藥鍼)이 Type 1 Hypersensitivity에 미치는 영향 (Effect of scutellariae radix pharmacopuncture on the type 1 hypersensitivity)

  • 김유승;송춘호
    • Korean Journal of Acupuncture
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    • 제23권3호
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    • pp.111-122
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    • 2006
  • Objectives : We studied the effects of Scutellariae Radix pharmacopuncture solution (SRHAS) on the type 1 hypersensitivity. Methods : In vivo, we measured compound 48/80-induced active systemic anaphylactic shock using ICR mice and anti-DNP IgE-induced passive cutaneous anaphylaxis (PCA) using Sprague Dawley rats. In vitro, we showed effects on cytotoxicity and ${\beta}-hexosaminidase$ release from RBL-2H3 cells. Results : In vivo, SRHAS pretreatments (100% or 50%) at BL13 inhibited active systemic anaphylactic shock induced by compound 48/80. PCA was only inhibited by pretreatments of SRHAS at optional points. In vitro, $0.1{\sim}2%$ SRHAS treatments did not affect cell viability while ${\beta}$-hexosaminidase release was significantly inhibited. Conclusions : These results suggest that SRHAS may be beneficial in the inhibition of type I hypersensitive inflammatory response.

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Fermentation-Mediated Enhancement of Ginseng's Anti-Allergic Activity against IgE-Mediated Passive Cutaneous Anaphylaxis In Vivo and In Vitro

  • Hwang, Seon-Weon;Sun, Xiao;Han, Jun-Hyuk;Kim, Tae-Yeon;Koppula, Sushruta;Kang, Tae-Bong;Hwang, Jae-Kwan;Lee, Kwang-Ho
    • Journal of Microbiology and Biotechnology
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    • 제28권10호
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    • pp.1626-1634
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    • 2018
  • Ginseng (the root of Panax ginseng Meyer) fermented by Lactobacillus plantarum has been found to attenuate allergic responses in in vitro and in vivo experimental models. Ginseng has been reported to also possess various biological functions including anti-inflammatory activity. The present study was aimed at comparing the anti-allergic effect of ginseng and fermented ginseng extracts on IgE-mediated passive cutaneous anaphylaxis in vitro in a murine cell line and in vivo in mice. Fermented ginseng extract (FPG) showed higher inhibitory effect against in vitro and in vivo allergic responses when compared with ginseng extract (PG). The secretion of ${\beta}$-hexosaminidase and interleukin (IL)-4 from the IgE-DNP-stimulated RBH-2H3 mast cells were significantly (p < 0.05) inhibited by FPG treatment, and this effect was concentration-dependent. Further, MKK4 activation and subsequent JNK phosphorylation were attenuated by FPG treatment. The inhibitory effect of FPG on the in vitro allergic response was verified in vivo against IgE-DNP-induced passive cutaneous anaphylaxis in a mouse model. These data indicated that the fermentation of ginseng with L. plantarum enhanced its anti-allergic effects both in vitro and in vivo. We predict that compositional changes in the ginsenosides caused by the fermentation may contribute to the change in the anti-allergic effects of ginseng. The results of our study highlight the potential of the use of FPG as a potential anti-allergic agent.

인삼부패란중 Rhizopus sp. G-211이 생성하는 Cellulase 에 관한 연구 (Studies on the Cellulolytic Enzyme System of Rhizopus sp. G-211 Isolated from Rotting Ginseng)

  • 노혜원;김상달;도재호;강성호
    • 한국미생물·생명공학회지
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    • 제10권1호
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    • pp.1-7
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    • 1982
  • 섬유소 분해효소를 강하게 생성하는 Rhizopus속에 속하는 균주를 인삼의 뿌리에 번식하는 부패균에서 분리하여, 이 균주가 생성하는 cello-lase에 대한 효소의 특성에 관하여 조사한 결과, (1) 본 효소의 최적 pH는 4.5, 최적온도는 5$0^{\circ}C$이었다. (2) 본 효소는 pH 3.0~7.0의 범위에서 안정하며, 5$0^{\circ}C$의 온도에서는 안정하나, 6$0^{\circ}C$ 이상의 온도에서는 열에 의해 급격한 실활이 일어난다. (3) Co$^{++}$, Mn$^{++}$ 이온에 의해 효소활성이 촉진되었으며 이때 Co$^{++}$이온은 $10^{-3}$M일 때 최대 활성을 나타냈고, Mn$^{++}$ 이온은 농도가 증가할 수록 활성이 촉진되었다. (4) EDTA등에 의해서는 영향을 받지 않았으나, 2.4-DNP와 SDS에 의해 강하게 저해를 받았다. (5) 결정성 cellulose를 기질로 사용하였을 때에도 반응시간을 길게 하면 상당히 분해되었으며, 인삼피, 인삼엽, Laminaran, Xylan에 대해 특히 분해력이 강하였다. (6) Co$^{++}$, Mn$^{++}$이온이 본 효소에 열보호작용을하였으며 saponin을 반응액에 첨가하였을 때 최종농도 0.5%에서 효소활성이 가장 촉진되었다.

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