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全蝎 抽出物이 血栓症, 全腦虛血 및 腦細胞毒性에 미치는 影響
백명현,황영근,정지천,강정준,김성훈 동국대학교 한의학연구소 1999 東國韓醫學硏究所論文集 Vol.8 No.1
본 실험은 전갈 추출물이 어혈병태 모델과 KCN으로 유발된 전뇌허혈, 뇌세포독성 등에 미치는 영향을 관찰하였다. 전갈은 Dextran에 의해 유도된 혈전으로 감소된 혈소판수, fibrinogen량, hemocrit치를 유의성 있게 증가시키고. 증가된 prothrombin time을 유의성 있게 단축시켰다. 전갈은 thrombin과 ADP에 의해 유도된 혈소판 응집을 억제하였으나 collagen에 의해 유도된 혈소판 응집에는 저해효과를 나타내지 않았다. 또한 collagen과 epinephrine에 의해 유도된 pulmonary embolism에 대하여 보호 효과를 나타내었다. 전갈은 KCN에 의한 전뇌허혈 유발 실험에서 혼수시간을 유의성 있게 단축시켰고, Amyloid β protein(25-35)에 의해 유도된 PC12 세포의 독성에 대하여 보호효과를 나타내었다. This following is effect of Buthus martensi Karsch (BMK) extract on dextran-thrombus model, KCN-induced coma, cytotoxicity of brain etc. BMK extract significantly increased number of platelet and fibrogen and significantly shortened the prothrombin time as compared with control group treated with dextran. BMK extract didn't affect the changes of hematocrit as compared with control group treated with dextran. BMK extract induced a significant inhibition of human platelet aggregation induced by thrombin and ADP but did not affect human platelet aggregation induced by collagen. BMK extract showed a protective effect on pulmonary thrombosis induced by collagen and epinephrine. BMK extract prolonged the duration of KCN-induced coma and showed a protective effect on cytotoxicity of PC12 cells induced by amyloid β protein(25-35) in a dose dependent manner. These results suggested that BMK extract might be usefully applied for prevention and treatement of thrombosis and brain damage.
정은욱,지삼룡,이영태,박지훈,김동기,제인수,채두근,박성재,박은택,이연재,이상혁,설상영,정정명 白中央醫療院 2005 仁濟醫學 Vol.26 No.1
Afferent loop syndrome is an uncommon complication of a gastrectomy and Billroth Ⅱ reconstruction. It may cause symtoms at any time from the first postoperative day to many years after the gastrectomy. Afferent loop syndrome is characterized by abdominal pain, vomiting and elevation of serum amylase. Thus, it is difficult to differentiate afferent loop syndrome from other cause of acute pancreatitis. However, the history of gastrectomy can be an important clue for diagnosing afferent loop syndrome. We experienced one case of chronic afferent loop syndrome with acute pancreatitis. After appropriate management, the abdominal pain disappeared and serum amylase level decreased. We report this case with a review of relevant literatures.
서울의 Penicillinase Producing Neisseria Gonorrhoeae 발생빈도(1996)
김재홍,황동규,전재홍,김윤석,김중환,김용준,이창균,임동진,김현수,조창근,김경문,박상훈,전우형,김희성,이호정,차명수,김갑형,김형석,김석우,황지환,박병순,권오상,이민수,송기훈,성소영,이인섭,부태성 대한화학요법학회 1999 대한화학요법학회지 Vol.17 No.2
Background : In recent years, gonorrhea has been panedemic and remains one of the most commom STDs in the world, especially in developing countries. Objective & Methods: For the detection of a more effective therapeutic regimen and assessing the prevalence of PPNG, we have been trying to study the patients who have visited the VD Clinic of Choong-Ku Public Health Center in Seoul since 1980 by means of the chromogenic cephalosporin method. Results: In 1996, 139 strains of N. gonorrhoeae were isolated, among which 53(39.0%) were PPNG. Conclusion: Our results suggests that after a peak of 74.3% in 1993, the prevalence of PPNG in Seoul is gradually declining.
풍력 터빈발전기의 구성요소별 위험도 우선순위 평가에 관한 연구
이명근(Myung-Geun Lee),이민행(Min-Haeng Lee),김지명(Ji-Myung Kim),이예빈(Ye-Bin Lee),한형주(Hyeong-Ju Han),노대석(Dae-Seok Rho) 한국산학기술학회 2024 한국산학기술학회논문지 Vol.25 No.5
최근, 에너지 위기와 환경문제가 전 세계적인 이슈로 부각되고 있는 가운데, 유엔 기후변화협약에 따라 탄소배출의 규제가 강화되고 있는 실정이다. 이에 따라, 탄소배출을 감소시킬수 있는 신재생에너지원인 풍력 터빈발전기의 설치 용량이 전 세계적으로 증가하고 있는 추세이다. 하지만, 풍력 터빈발전기의 단위 설비용량에 따라 고장 횟수도 증가하며, 화재 및 비화재 사고에 따라 각각의 위험도와 대응방법이 다르기 때문에, 이에 따른 고장원인 분석이 요구되고 있다. 현재 풍력 터빈발전기의 고장원인의 분석 방법으로 고장모드 및 영향분석 방식이 사용되고 있지만, 기존 방식의 심각도(severity) 및 발생도(occurrence)는 전문가의 지식, 경험치와 고장확률을 기반으로 하는 정성적 분석이기 때문에, 실제 위험도 우선순위(risk priority)를 적정하게 나타내지 않을 가능성이 있다. 따라서, 본 논문에서는 이러한 문제점을 해결하기 위하여, 화재 및 비화재 사고의 잠재적 원인을 구분하여 피해액을 고려한 심각도(severity)와 운용시간을 고려한 발생도(occurrence)의 산출 방안을 제안한다. 제안한 평가 방안을 바탕으로 시뮬레이션을 수행한 결과, 심각도는 설비금액과 고장 시 정지시간에 따른 손실비를 고려하여 기존의 방법보다 세분화되고, 발생도는 기존의 고장률에 운용시간을 고려하여 적정하게 평가됨을 알 수 있다. 이에 따라, 기존 FMEA 방식에 정량적인 개념을 도입하고 화재 및 비화재를 구분함으로써 위험도 우선순위 평가의 적합성과 신뢰성이 향상됨을 알 수 있다. Recently, as the energy crisis and environmental problems have become global issues, regulations on carbon emissions have been strengthened in accordance with the United Nations Framework Convention on Climate Change. Under these circumstances, the installation capacity of renewable energy source, such as wind turbines, to reduce carbon emissions is increasing worldwide. On the other hands, as the frequency of malfunctions is also rising according to the large size unit capacity of wind turbine and the risk analysis and counter measure are different depending on fire and non-fire incidents, an evaluation method of the causes of malfunctions is required. In general, the failure modes and effect analysis (FMEA) method is adopted to analyze the causes of malfunctions in wind turbines, but the severity and occurrence of existing methods are qualitative analyses based on experts knowledge and failure probability, which may not adequately reflect the actual risk priority. This paper proposes a method to solve these problems by calculating the severity degree considering the damage cost and the occurrence degree considering the operating time based on the fire and non-fire incidents. the simulation results based on the proposed evaluation method confirmed that the severity is more detailed than the existing method by considering the damage cost and that the occurrence had been evaluated appropriately by considering the failure rate and operating time. In addition, the performance and reliability of each risk priority is improved by introducing quantitative concepts to the existing FMEA method and categorizing fire and non-fire.
Myung Geun Song,최은영,Bora Kang,Ji Yeong Jeon,장준,이승복,민창기,Hyewon Youn 한국분자세포생물학회 2012 Molecules and cells Vol.33 No.1
Graft-versus-host disease (GVHD) results from immune-mediated attacks on recipient tissues by donor-originated cells through the recognition of incompatible antigens expressed on host cells. The pre-conditioning irradiation dose is a risk factor influencing GVHD severity. In this study, using newly generated luciferase transgenic mice on a B6 background (B6.LucTg) as bone marrow and splenocyte donors, we explored the effects of irradiation doses on donor cell dynamics in major histocompatibility complex (MHC)-matched allogeneic GVHD hosts via bioluminescence imaging (BLI). Results from BLI of GVHD hosts showed higher emission intensities of luminescence signals from hosts irradiated with 900 cGy as compared with those irradiated with 400 cGy. In particular, BLI signals from target organs, such as the spleen, liver, and lung, and several different lymph nodes fluctuated with similar time kinetics soon after transplantation, reflecting the synchronous proliferation of donor cells in the different organs in hosts irradiated with 900 cGy. The kinetic curves of the BLI signals were not synchronized between the target organs and the secondary organs in hosts irradiated with 400 cGy. These results demonstrate that pre-condi-tioning doses influence the kinetics and degree of proliferation in the target organs soon after transplantation. The results from this study are the first describing donor cell dynam-ics in MHC-matched allogeneic GVHD hosts and the influence of irradiation doses on proliferation dynamics, and will provide spatiotemporal information to help understand GVHD pathophysiology.