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Pulsed Laser Deposition 방법으로 증착된 Fe<sub>3</sub>O<sub>4</sub> 나노선의 성장과 특성
윤종구,김진아,윤순길,Yun, Jong-Gu,Kim, Jin-A,Yoon, Soon-Gil 한국전기전자재료학회 2013 전기전자재료학회논문지 Vol.26 No.1
$Fe_3O_4$(magnetite) having half metallic property attracts great attention material with high curie temperature in spintronics. $Fe_3O_4$ thin films and nanowires were grown onto c-$Al_2O_3$(0001) at various substrate temperatures. $Fe_3O_4$ films deposited from 300 to $600^{\circ}C$ are influenced by thermal stress induced from mismatch of thermal expansion coefficient between $Fe_3O_4$ and $Al_2O_3$ (0001) substrate. The $Fe_3O_4$ nanowires grown at $640^{\circ}C$ showed a diameter of 130 nm and a length of $2-10{\mu}m$. The nanowire arrays fabricated by pulsed laser deposition technique have high coercivity($H_c$) of 608 Oe and Squareness($M_r/M_s$) of 0.68 in perpendicular direction.
만성 C형 간염 환자에서 Interferon-${\alpha}$를 투여중 발생한 간질성 폐렴 1예
윤종구,안중현,고승현,이현승,권순석,김영균,문화식,박성학,송정섭,Yoon, Jong Goo,Ahn, Joong Hyun,Ko, Seung Hyeon,Lee, Hyun Seoung,Kwon, Soon Seog,Kim, Young Kyoon,Moon, Hwa Sik,Park, Sung Hak,Song, Jeong Sup 대한결핵및호흡기학회 1996 Tuberculosis and Respiratory Diseases Vol.43 No.4
만성 C형 간염환자에서 IFN으로 치료중에 발생된 간질성 폐렴은 매우 드물고 아직까지국내에는 보고된 바 없었다. 저자들은 만성 C형 간염환자가 IFN-${\alpha}$를 투여받던 중에 기침과 호흡곤란을 주소로 내원하여 간질성 폐렴으로 진단된 1예를 경험하였기에 문헌고찰과 함께 보고하는 바이다. Interstitial pneumonitis associated with interferon alpha therapy for chronic hepatitis C was first describe6 in 1994 by Kazoo et al In Japan. The mechanism of interstitial pneumonitis developed by interferon alpha was still unknown but immunologic, allergic of direct lung toxicity were suggested. We experienced a case of interstitial pneumonitis developed during interferon alpha therapy for chronic hepatitis C in a 52-year-old male patient. He was treated with 6 million units of interferon alpha intramuscularly 3 times per week for 4 weeks and noted progressive dyspnea and cough. These symptoms were subsided after 6 weeks' discontinuation of interferon alpha therapy. And so, he was retreated with 3 million units of interferon alpha 3 times per week for 8 weeks and felt dyspnea again. He was admitted to our hospital for further evaluation of progressive dyspnea. Arterial blood gas(ABG) values were $PaO_2$ 90.7 mmHg and $PaCO_2$ 31.9 mmHg, and antinuclear antibody(ANA) was negative. A chest X-ray film revealed diffuse reticulo-nodular shadows in bilateral lung fields, suggesting a diagnosis of interstitial pneumonitis. A marked increase in lymphocyte count and suppressor T cell were observed in bronchoalveolar lavage(BAL) fluid. Lymphocyte stimulation test with interferon alpha was positive. Interstitial pneumonitis was confirmed by transbronchial lung biopsy. After discontinuation of interferon alpha, we gave oral steroid in the condition that clinical symptoms were being improved gradually.
윤종구(Jongku Yoon),이경희(Kyunghee Lee) 한국자동차공학회 2008 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Since the assession of the World Trade Organization in 1995 and conclusion of TBT agreement, countries have faced greater pressure to accept and conform to international standards. This paper describes the trend and strategy of International Standardization for next generation automobiles with global market share. It describes standardization in the field of electrical and electronic equipment system, ergonomics, Intelligent Transport Systems(ITS) and electrically propelled road vehicles as the core areas of vehicle. Korea urgently needs to step up efforts to have its technologies in conformity of international standards in order to facilitate international trades, to enhance competitiveness and transparency in the initial stage of standardization. It is expected to contribute towards improving global market share of Korean automobile industry by means of standardization as one of growth-engines.
만성 C형 간염 환자에서 Interferon-α를 투여중 발생한 간질성 폐렴
윤종구 ( Jong Goo Yoon ),안중현 ( Joong Hyun Ahn ),고승현 ( Seung Hyeon Ko ),이현승 ( Hyun Seoung Lee ),권순석 ( Soon Seog Kwon ),김영균 ( Young Kyoon Kim ),문화식 ( Hwa Sik Moon ),박성학 ( Sung Hak Park ),송정섭 ( Jeong Sup So 대한결핵 및 호흡기학회 1996 Tuberculosis and Respiratory Diseases Vol.43 No.4
한국 성인에서 Helicobacter pylori 감염의 진단에 있어 Helicobacter pylori Stool Antigen Test ( HpSA ) 의 진단 정확도
윤종구(Jung Goo Yoon),한석원(Sok Won Han),양성은(Seong Eun Yang),박지찬(Ji Chan Park),이계원(Kye Won Lee),이승규(Seung Kyu Lee),김명철(Myung Cheol Kim),김상우(Sang Woo Kim),김진일(Jin Il Kim),최명규(Myung Kyu Choi),한남익(Nam Ik Han) 대한소화기학회 2002 대한소화기학회지 Vol.40 No.2
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윤종구 ( Jong Goo Yoon ),김재광 ( Jae Kwang Kim ),이대훈 ( Dae Hoon Lee ),김진일 ( Jin Il Kim ),김상우 ( Sang Woo Kim ),김성수 ( Sung Soo Kim ),방춘상 ( Chun Sang Bang ),양영상 ( Young Sang Yang ),조세현 ( Se Hyun Cho ),박수헌 ( S 대한소화기학회 2000 대한소화기학회지 Vol.36 No.3
Background/Aims : The aim of this study was to investigate whether the epidemiologic patterns of peptic ulcer can be changed by environmental changes. Methods: We studied 1,263 patients with peptic ulcer and the results were compared with those of 8 years age. Results: Of 1,263 cases, patients with gastric ulcer (GU), duodenal ulcer, and combined ulcer (CU) are (44.3%), (41.4%), and (14.3%), respectively. Those in 8 years ago were (41.5%), (51.4%), and (7.1%), respectively. The mean age of the patients with GU, DU, and CU are 52.9, 42.8, and 50.0 years, respectively. Those in 8 years ago were 50.3, 39.6, and 47.3 years, respectively. The mean age of patients with gastric ulcer, duodenal ulcer, and combined ulcer was 52.9±13.0 years vs. 50.3±14 years, 42.8±13.0 years vs. 39.6±12 years, and 50.0±13.0 years vs. 47.9±13 years respectively. The percentage of smokers (GU:86.6%, DU:79.5%) in male with peptic ulcer was higher than 73% in the general population. Conclusions : Comparing this results with the those of eight years ago, we found the increased incidence of gastric ulcer, and the decreased recurrence of peptic ulcer. These differences may be due to the increase of aged population, increased association with NSAIDs, and increased eradication rates of H. pylori. (Kor J Gastroenterol 2000;36:336 - 347)