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최우석,고영태,임재훈,이선화,윤엽,이동호,임언,이봉암,김국기,김광명,김태성,Choi, Woo-Suk,Ko, Young-Tae,Lim, Jae-Hoon,Lee, Sun-Wha,Yoon, Yup,Lee, Dong-Ho,Leem, Won,Rhee, Bong-Arm,Kim, Gook-Ki,Kim, Kwang-Myung,Kim, Tae-Sung 대한영상의학회 1987 대한영상의학회지 Vol.23 No.1
The computed tomographic findings of cerebral arterial ectasia in 8 patients, of which 5 cases were angiographically documented, are reported. The ectatic arteries, located predominantly in the suprasellar and interpeduncular cisterns, appeared as serpiginous, tubular structures on the unenhanced scan. The enhanced CT scan demonstrated dense, sharply defined, homogeneous intraluminal enhancement. Until recently, the diagnosis of cerebral arterial ectasia was usually established by angiography. With introduction of CT it has become possible to noninvasively indentify and characterize this vascular disorder and its associated intracranial complications. The vertebrobasilar dolichoectasia may be diagnosed by CT as an extra-axial lesioin in the cerebellopontione angle. It enhances in a tubular fashion after intravenous injection of contrast.
Neuroimaging of Traumatic Brain Injury
최우석,Choi, Woo Suk The Korean Society of Biological Psychiatry 1995 생물정신의학 Vol.2 No.2
두부 외상은 많은 발생율과 사망율을 차지하고 있으며, 건강한 생활을 위해 큰 관심을 갖게 되었다. 신경방사선영상은 외상성 뇌손상 환자들의 진단과 치료에 필수적인 방법이다. 뇌손상의 기본 기전, 병리, 그리고 영상 소견을 이해 하는 것은 매우 중요하다. 1970년대에 Glasgow coma scale의 형상과 전산화단층촬영(CT)의 발달은 임상의사들이 두부외상에 대한 평가와 환자들의 경과를 예상하는데 극적인 변화를 주었다. 최근 자기공명영상(MRI)의 발달로 외상성 뇌손상의 형태를 더욱 이해 하게 되었고, 두부 외상의 발견율이 높아지게 되었다.
최우석,강석봉,Choi, Woo-Suk,Kang, Seok-Bong 대한한방내과학회 2004 大韓韓方內科學會誌 Vol.25 No.4
Objectives : This experiment was done to evaluate the effects of Hyuntogobon-hwan(HTG) on antioxidant capability and lipidic concentration in blood, both of which are presumed to be related to aging. Methods : 12 week-old SD rats were divided into controlled group, uncontrolled group and HTG group. As controlled and HTG groups were given subcutaneous injection of D-galactose(50mg/kg/rat), at the same time HTG group was administered extract of Hyuntogobon-hwan(270mg/200g). HTG injections continued for 6 weeks. After initial injections, blood was drawn from each group and the following were measured: the activity of SOD, GSH-px, catalase in erythrocytes, TSARS value, concentration of total lipid, tryglyceride in blood plasma. Results : The activities of SOD and GSH-px in erythrocytes increased significantly in HTG group compared with controlled group. The activity of catalase seemed to increase slightly, but it was barely noticeable. The concentration of total lipid in plasma decreased significantly in HTG group compared with controlled group. The value of TBARS in plasma seemed to decrease slightly, but it was barely noticeable. Conclusions : According to the above results, Hyuntogobon-hwan has an influence on aging by virtue of activation of antioxidative enzyme systems in erythrocytes and concentrations of lipid in blood plasma.
대보음환(大補陰丸)이 Streptozotocin으로 유도된 백서(白鼠)의 당뇨병 및 당뇨병 합병증에 미치는 영향
최우석,윤경민,이연경,강석봉,Choi, Woo-Suk,Yoon, Kyeong-Min,Lee, Yeon-Kyeong,Kang, Seok-Bong 대한한방내과학회 2009 大韓韓方內科學會誌 Vol.30 No.4
Objectives : The object of this study was to investigate the effects of Daeboeum-hwan (DBEH) aqueous extracts on Streptozotocin (STZ)-induced rat diabetes and related complications. Methods : SD rats were divided into 6 groups (n =8) : 50 mM citrate buffer and vehicle (distilled water 5 ml/kg) administered group (Intact control), STZ treatment (60 mg/kg, single intraperitoneally administered) and vehicle administered group (STZ control), STZ treatment and silymarin 100 mg/kg administered group (Reference), and STZ treatment and DBEH extracts 50, 100 and 200 mg/kg administered groups. DBEH extracts were orally administered once a day for 28 days from 3 weeks after STZ treatment. The results were compared with silymarin 100 mg/kg. Results : Decreases in the body weights, increase of kidney and liver weights, blood glucose, BUN, creatinine, AST, ALT, LDL, triglyceride and total cholesterol levels with decreases of HD L levels, increases of pancreatic MDA contents and decreases of GSH contents were detected in STZ control as compared with intact control. These diabetes and related complications were inhibited by treatment with 100 and 200 mg/kg of DBEH extracts. Conclusion : DBEH extracts showed favorable effects on STZ-induced diabetes and related complications mediated by their antioxidant effects as similar to silymarin. Because the lowest dosage (50 mg/kg) of DBEH treated group did not show any favorable effects as compared with STZ control, the effective dosages of DBEH is considered as about 100 mg/kg, while DBEH extracts at 200 mg/kg showed similar effects as compared with 100 mg/kg of silymarin. It, therefore, is expected that DBEH will show favorable effects on diabetes and various diabetic complications.
인쇄용 페이스트의 조성변화가 탄소나노튜브 캐소드의 전계방출 특성에 미치는 영향
최우석,신허영,김동희,안병건,정원섭,이동구,조영래,Choi, Woo-Suk,Shin, Heo-Young,Kim, Dong-Hee,Ahn, Byung-Gun,Chung, Won-Sub,Lee, Dong-Gu,Cho, Young-Rea 한국재료학회 2003 한국재료학회지 Vol.13 No.10
The effects of paste materials on field emission properties in a carbon nanotube(CNT) cathode were investigated for high-efficient field emission displays. The major components in CNT paste for screen printing were a metallic Ag-paste, a dielectric glass-frit and CNT ink. The emission current from the cathode by an electron tunneling effect increased with an increase in the dielectric material fraction in the CNT paste, which is related to an increase of field enhancement factor in Fowler-Nordheim equation. The surface treatment used, after soft baking of the screen-printed CNT films, greatly affected the decrease in the turn-on field in CNT cathode and the uniformity of emission sites over the entire CNT film area.
논문(論文) : 이백(李白)의 < 행역(行役) >시(詩) 초탐(初探)
최우석 ( Woo Suk Choi ) 고려대학교 중국학연구소 2015 中國學論叢 Vol.50 No.-
This paper analyzes the poetry of “XingYi” by Li Bai and studies the characteristics of expressions in it. First, this poetry mainly includes appreciating scenary, longing for friends, the yearning for Yinyl, and other things. The majority of appreciating scenary is composed of depicting natural scenary in motion. The author Li Bai also describes the longing for his home town and friends. Furthermore, The yearning for Yinyl incorporates the desire to live with Taoist hermits in remote forests. In the remaining parts, he expresses his sorrows for not being able to fulfill his will and longing for the Palace. The poetry of XingYi was influenced by Xiaotong’s Wenxuan in its content and format. In addition, the author describes the speed of moving quite fastly in joyful feelings and depicts it quite slowly in adverse or sad feelings. Finally, the author utilized hyperbole, simile, and abundant imagination which renders this poetry masterfully romantic.
논문(論文) : 건안(建安) 시가 속의 정치적 색채 고찰
최우석 ( Woo Suk Choi ) 중국어문연구회 2010 中國語文論叢 Vol.0 No.47
建安時期的詩人無論其在政治領域內是否有建樹,但其關注點無一例外的集中於社會政治,集中於建功立業,治平天下。本文卽著眼於此。首先考察他們的詩歌中所蘊含的政治色彩,探究這種詩歌在中國詩歌史上的地位及對後世詩壇的影響。首先,建安時期詩歌的政治色彩繼承了“政敎”的“美刺”傳統,這個傳統是從先秦發展起來병在漢代確立的。建安時期的詩風是崇尙‘想說什마就說什마’的‘通脫’風氣,使建安詩人不受漢代政敎的約束,形成了自由的創作風格。具有濃厚政治色彩的詩歌也不例外。雖然曹操的代表作<蒿里行>,曹植的<해露行>是描寫漢末戰亂和人民苦難的詩作,孔融的<六言詩>(其一),王粲的≪七哀詩≫(其一)都具有强烈的‘諷諫’意味,但是建安詩人還大膽地在詩歌中表達自己的政治理想,比如“三曹之詩”。≪對酒≫敍述曹操理想的世界。≪度關山≫講述執政者要勤儉、愛民、守法。曹操<短歌行>體現他愛惜人才,渴望人才,想統一國家大業的雄心壯志。這種率眞的詩風在漢代中葉後的政治色彩詩中是十分罕見的。總之,建安時期具有政治色彩的詩歌包含了從政敎到言志等的豊富的內容。병且,這種詩歌在中國詩歌史上具有相當重要的地位。령外,建安時期具有政治色彩的詩歌對後世的詩歌創作也産生了深遠影響,在中國詩歌史上具有重要意義。首先,在政治舞台上占有至高地位的曹操,曹植之類的王者詩人,他們用詩抒發自己的政治理想及見解,這種現象在建安時期以前幾乎是不存在的。其次,曹植的<浮萍篇>,<種葛篇>等由抒發政治上的失意而産生的“傷懷”之情也爲後世尤其是唐代盛行的‘貶謫’詩所繼承。再次,曹操用古題寫時事,批判現實政治,揭露民生疾苦,唐代杜甫的‘史詩’中<兵車行>,<石壕吏>卽深受其影響。最後,曹操和他的諸多政治幕僚在업都的銅雀台宴集,擧行賦詩,獻頌的文學活動,形成了一個‘업下’文學集團。這也爲後世政治詩開創了先河. 比如說,唐代的君臣之間擧行宴會,進行頌美,勸誡等此類內容的詩歌創作。這些都是受到了建安時期詩歌的影響。由此可見,在建安詩歌中,政治色彩詩歌是不可忽視的重要一環。