• Title/Summary/Keyword: 억제력

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Effects of Several Chemicals Treatment for Cocoon Sericin (견층(繭層) Sericin에 대(對)한 몇 가지 화학약제(化學藥劑) 처리(處理)의 효과(效果))

  • Rhee, In Jeon;Lee, Dong Soo;Cheon, Seung Rok
    • Current Research on Agriculture and Life Sciences
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    • v.3
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    • pp.70-78
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    • 1985
  • The purpose of this study was to find out effects of several chemicals treatment for cocoon sericin. and there was several results of use to control the solubility of cocoon sericin in water. The results obtained was summarized as follows ; The chemicals which showed the strongest accelerating power on the solubility of cocoon sericin in water was sodium peroxide ($Na_2O_2$), the second was sodium carbonate ($Na_2CO_3$), the third was sodium sulfite ($Na_2SO_3$), the weakest was ammonia water ($NH_4OH$) in order among noticed silk-reeling accelerators. The chemicals which showed the inhibiting power on the solubility of cocoon sericin in water was tannic acid ($C_{14}H_{10}O_9$), the second was stannic acid ($Sn(OH)_4$), the third was formic acid (HCOOH) and the weakest was methyl alcohol ($CH_3OH$) in order among noticed silk-reeling inhibitors. Particulary stannic acid and formic acid showed accelerating power on the solubility of cocoon sericin at high temperature over 100 degrees of celsius thermometer in water Methyl alcohol did not show the inhibiting power on the solubility of cocoon sericin in low concentration. (at 1,500-2,000 times)

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Effect of metals(Cd & Zn) and its nitrogen compounds on growth of bacteria isolated from the three tributaries and lower reach(Mulgum) of the Nakdong River (낙동강 하류(물금)와 세 지류에서 분리된 우점 세균의 증식에 미치는 금속(Cd & Zn) 및 그 질소 화합물의 영향)

  • Park, Jae-Rim;Son, Yeon-Ju;Ha, Kyung;Park, Joong-Chul
    • Journal of Environmental Science International
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    • v.11 no.3
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    • pp.183-189
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    • 2002
  • Investigation was carried out to observe the dominant bacteria and the effect of metals(Cd & Zn) and its nitrate compound on growth of bacteria isolated from the three tributaries and lower reach of the Nakdong River. Mean CFU(log$_{10}$) level was highest in Kumho River(8.30 CFU), Nam River, Hwang River, and Mulgum followed. Staphylococcus xylosus, Staph. lentus, Pasteurella pneumotropica, Aeromonas hydrophilla were dominant species in each study site. Cadmium powder and Zinc powder showed strong effect to inhibit the growth of Micrococcus spp., Pasteurella pneumotropica, Aeromonas hydrophilla. But, nitrate compounds of Cd and Zn(Cd(NO$_3$)$_2$4$H_2O$, Zn(NO$_3$)$_2$6$H_2O$) did not clearly show the strong effect to inhibit the growth of dominants.s.

강제조사권의 한계와 대안

  • 이인권
    • Journal of Korea Fair Competition Federation
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    • no.96
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    • pp.2-7
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    • 2003
  • 실익이 없는 무리한 강제 조사권의 도입보다는 혐의가 드러난 담합의 경우 직접 검찰에 고발하거나 내부밀고자 보호 및 보상 강화를 통하여 절차적 정당성 및 정책 실효성을 동시에 확보할 필요가 있다. 각 국의 경쟁당국이 압수$\cdot$수색권을 행사하여 부당한 공동행위를 적발한 경우는 극히 일부분이기 때문이다. 그리고, 유사사례에 대해 향후 엄격하게 공정거래법을 집행함으로써 부당한 공동행위에 대한 사전적인 억제력을 제고해야 한다. 한편으로는 공정위의 시정조치가 있기 전에도 부당한 공동행위의 결과 피해를 본 사적 당사자가 법원에 직접 손해배상을 청구할 수 있도록 하고, 전문가들을 활용하여 담합으로 인한 손해발생 입증과 손해배상액을 추정하여 부당이득을 환수할 수 있어야 한다.

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Transmethylase 억제제(TMI)의 활성 및 작용기전 연구개발

  • 이향우
    • Proceedings of the Korean Society of Applied Pharmacology
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    • 1993.04a
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    • pp.157-157
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    • 1993
  • TMI는 알라닌과 글리신이 풍부한 18개의 아미노산으로 이루어져 분자량이 약 1,400Da인 물질이었으며, 가수분해 효소 처리후 억제력의 변화를 보이지 않았고, Porcine liver, spleen, testis에서 정제한 PM II에 대하여 TMI가 비상경적 억제작용을 하는 것으로 나타났으며, Ki value는 각각 300 nM, 250 nM 297 nM이었다. 그리고 돼지 간장에서 부분정제한 PM I, PM II, PM III, phospholipid methytransferase에 대한 정제된 TMI의 영향을 조사해 보면 각각 33%, 47%, 31%, 35%의 억제효과를 나타내었다.

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차세대 전투기 F-22(RAPTOR) 개발 전망-개발비용을 중심으로

  • O, Won-Ryong
    • Defense and Technology
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    • no.9 s.259
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    • pp.26-37
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    • 2000
  • 대부분의 나라들은 미래 항공력(Air Power)의 중요성을 실감하였기에 국가적으로 공군력 강화에 주안점을 두고 있는 실정이다. 한국 공군도 공군력이 국가방위의 핵심전력이라는 공군의 목표와 버금가는 전략적 접근이 필요하다고 보며 이러한 맥락에서 공군의 F-X사업도 각군간의 사업 분배의 개념이 아닌 국가안보를 위한 강력한 억제력과 미래 불특정한 주변 위협에 대해서도 억제행사를 할 수 있는 능력을 갖출 수 있도록 국가적인 전략으로 추진되어야 한다고 본다. 그래야만 대한민국은 현재 우리 앞에 펼쳐지고 있는 그리고 곧 다가오는 동북아에서 뿐만 아니라 세계 속의 중심세력 국가로 설 수 있을 것이다.

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Screening of Korean Medicinal and Food Plants with Antitumoral Activity (국내 약용 및 식용식물중 항종양활성 식물탐색)

  • Chung, Ill-Min;Kim, Kwang-Ho;Ahn, Joung-Kuk;Ahn, Jong-Seog;Ahn, Soon-Cheol
    • Korean Journal of Medicinal Crop Science
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    • v.7 no.1
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    • pp.37-44
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    • 1999
  • This study was conducted to screen antitumoral activity by in vitro bioassay method using 60 Korean medicinal and food plants extracted by 80% EtOH. Antitumor activity test was applied by the PKC(protein kinase C) and antibleb formation, PLC (Phospholipase C), and colorimetric tetrazolium assay (MTT assay) methods. Chenopodjum album and black Glycine max showed high antitumoral activity by 73.5% and 81.0%, respectively, against PKC by bleb-forming assay and PKC enzyme assay on human chronic leukemia K562 cell. Black Glycine max also showed 91.2% antitumoral activity in the PLC method and the lowest $IC_{50}$ $value(4.7{\mu}g/ml)$ by MTT method against P-338 cell line. In the effect of the concentration treatment on antitumoral test, the more concentration indicated the more activity value.

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A Study on the Attractions Evaluative Systems of Gyeongju Historic Heritage Sites (경주역사유적지구의 흡인력 평가지표 선정 연구)

  • Yu, Wen-Dong;Kang, Tai-Ho
    • Journal of the Korean Institute of Traditional Landscape Architecture
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    • v.33 no.3
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    • pp.103-113
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    • 2015
  • This study is an evaluation index development research based on Gyeongju Historic Heritage Sites to identify the attractive Properties of Gyeongju, which decided to competitiveness of the historical city. We got the export Indicator candidate groups by the literature reviews and UNESCO, ICOMOS, and 49 Indicator candidate groups had been selected. In the end, we chose 42 attraction indexes in charm of the cultural heritage side, Cultural heritage tourism resources Side, Restraining force Heritage tourism Side three aspects based on the analysis of Importance(M), Standard deviation(SD), Content Validity Ratio(CVR), Agreement, convergence by using Delphi Technique. We can determine these indicators will be useful basic information, for improving the city's historic attractions. In the future, used these indicators as a basis for Attractions effectiveness evaluation of Gyeongju, Through which the attractions of Gyeongju can be re-recognized.

Effect of γ-Irradiation on the Antioxidant Activity of Rice Hull, Rice Bran and Barley Bran (감마선 조사에 의한 왕겨, 미강, 맥강의 항산화능의 변화)

  • 배성문;김정한;조철우;정태준;육홍선;변명우;이승철
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.31 no.2
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    • pp.246-250
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    • 2002
  • Effect of ${\gamma}$-irradiation to cereal processed by-products was examined for antioxidative ability. Rice hull (RH), rice bran (RB) and barley bran (BB) were irradiated with 5, 10, 15 and 20 kGy of ${\gamma}$-ray at 4.2 kGy/h. The amount of total phenol compounds of unirradiated RH, RB, and BB were 0.873 mM, 0.643 mM, and 0.377 mM, respectively. Irradiation up to 20 kGy did not show noticeable effect to the amount of total phenol compounds in RH, RB and BB. Electron donating abilities of RH, RB and BB were very similar, and they were not affected by irradiation. According to TBARS analyses, the inhibition abilities of lipid peroxidation of RH and RB were not affected by ${\gamma}$-irradiation, while those of BB were decreased with irradiation. These results indicate that BB is more sensitive to ${\gamma}$-irradiation than other rice processed by-products.

Effect of Microwave Treatment on the Antioxidant Activity of Rice Processed By-products (Microwave처리에 의한 쌀 가공 부산물의 항산화능의 변화)

  • 배성문;김정한;조철우;정태춘;하정욱;이승철
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.30 no.6
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    • pp.1026-1032
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    • 2001
  • Microwave treatment was studied to investigate the antioxidant ability of rice hull and rice bran. The color changes were related to the intensity of microwave and to the treated time on rice bran. However, the electron donating abilities of rice hull and rice bran extract were not much affected by microwave intensity. Rice hull extract treated with a 100 W microwave showed 80% inhibition of lipid peroxidation when fish oil was treated with $H_2O$$_2$. Also inhibition activity against lipid peroxidation in rice hull is more stable than that of rice bran when treated with microwave. Overall, rice hull extract showed better antioxidant activity than rice bran. It seems that rice hull contains higher antioxidant components as well as the browning reaction products having anti-oxidant activity during microwave treatment.

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Effect of New Systemic Fungicides Metalaxyl-Mz and Aliette-F for Controlling Red Pepper Fruit Rot Caused by Phytophthora Capsici (고추역병(疫病)에 대한 새로운 침투성(浸透性) 살균제(殺菌劑) Metalaxyl-MZ와 Aliette-F 의 방제효과(防除效果))

  • Lee, Sun-Ook;Chung, Bong-Koo
    • The Korean Journal of Mycology
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    • v.17 no.4
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    • pp.184-188
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    • 1989
  • Effect of Metalaxyl-Mz and Aliette-F to Phytophthora capsici was studied in vitro and in vivo. Metalaxyl-Mz was more inhibitory than Aliette-F on Mycelial growth. Although Aliette-F had more inhibitory effect on zoosporangial formation, there was no big difference among the other concentrations of the two fungicides. A higher inhibitory trend of zoosporangial formation, however, was resulted by the chemical when compared to the control. The extract obtained from the red pepper treated with Metalaxyl-Mz showed a good inhibitory effect on mycelial growth, and there was not so big difference between 400 and 600 times concentrations. The 1000 times concentration was less inhibitory than the above two concentration levels. Although there no distinct difference the two chemicals, Aliette-F and Metalaxyl-Mz, however, preventive effect was higher than curative effect under the green house tests.

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