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백모오가피로부터 분리된 트리터페노이드 및 리그난의 항산화작용
김지연,양기숙 대한약학회 2004 약학회지 Vol.48 No.4
Acanthopanax species (Araliaceae) traditionally has been used as analgesics, stimulant of immune system, and replenishment of body functions. Acanthopanax divaricatus var. albeofructus is indigenous plant to Korea. The antioxidant activities of compounds from A divaricatus var. albeofructus were determined by 1,1-diphenyl-2-picrylhydrazyl (DPPH) method and thiobarbituric acid reactive substance (TBARS) assay on human plasma low-density lipoprotein (LDL). The triterpenoid and lignan constituents from this plant showed antioxidant activities and the lignan, l-sesamin exhibited the most potent antioxidant activity in Cu$^{2+}$ -induced LDL oxidation.n.
혈복강 소견으로 내원한 자궁파열을 동반한 침윤성 기태 1예
김지연,김기형,신병섭,안기헌,이진숙,윤만수 대한부인종양 콜포스코피학회 2003 Journal of Gynecologic Oncology Vol.14 No.1
침윤성 기태는 과다한 영양배엽의 증식이 자궁근층을 침범하였거나 여러 장기에 전이를 일으킨 경우를 말하는데, 이 질환의 양태에 대해서는 정확하게 알려져 있지 않다. 이 종양의 증상으로는 자궁근층의 국소침범에 의한 출혈, 복강내출혈, 또는 자궁파열이 있을 수 있다. 저자들은 혈복강 소견을 보이며 자궁파열 소견이 있어 전자궁적출술을 시술받고 조직학적으로 침윤성 기태를 진단받은 1예를 경험하였기에 문헌 고찰과 함께 이를 보고하는 바이다. Invasive mole is defined as the invasion of molar villi into myometrium or the metastasis on several organs from hydatidiform mole. It is not understood accurately, because this disease is clinically occult and the diagnosis is usually made on the basis of hysterectomy. An invasive mole causing uterine rupture is a rare occurrence. We describe below a case with an unusual hemoperitoneum finding. The patient underwent total abdominal hysterectomy and pathologic examination indicated invasive mole. A brief reviews of related literatures was done.
DDoS 공격 피해 규모 및 대응기법 비용분석을 위한 모델링 및 시뮬레이션 기술연구
김지연,이주리,박은지,장은영,김형종,Kim, Ji-Yeon,Lee, Ju-Li,Park, Eun-Ji,Jang, Eun-Young,Kim, Hyung-Jong 한국시뮬레이션학회 2009 한국시뮬레이션학회 논문지 Vol.18 No.4
Recently, the threat of DDoS attacks is increasing and many companies are planned to deploy the DDoS defense solutions in their networks. The DDoS attack usually transmits heavy traffic data to networks or servers and they cannot handle the normal service requests because of running out of resources. Since it is very hard to prevent the DDoS attack beforehand, the strategic plan is very important. In this work, we have conducted modeling and simulation of the DDoS attack by changing the number of servers and estimated the duration that services are available. In this work, the modeling and simulation is conducted using OPNET Modeler. The simulation result can be used as a parameter of trade-off analysis of DDoS defense cost and the service's value. In addition, we have presented a way of estimating the cost effectiveness in deployment of the DDoS defense system.