Co계 자성합금 나노와이어의 특성에 영향을 미치는 전기화학적 변수

이종욱,박호동,이관희,김긍호,정원용,Lee, Jong-Wook,Park, Ho-Dong,Lee, Kwan-Hyi,Kim, Gyeung-Ho,Jeung, Won-Young 한국전기화학회 2005 한국전기화학회지 Vol.8 No.3

본 연구에서는 고순도 알루미늄 호일$(t=300{\mu}m)$양극산화 공정을 통해 AAO 나노템플레이트를 자체 제조하였고, 이렇게 제조된 형틀을 가지고 교류 나노전주법에 의해 경자성 합금인 CoP와 연자성 합금인 CoFe를 나노와이어로 제조하였다. 대표적인 Co계 자성합금인 CoP와 CoFe나노와이어는 각기 독특한 자기적 성질을 나타내었다. 경자성 CoP 합금 나노와이어의 경우 교류 인가전압에 따라 hcp와 fcc가 혼재된 구조가 형성되어 자기적 특성에 영향을 미쳤다. 또한 높은 포화자화 값을 갖는 CoFe연자성 합금 나노와이어는 박막 도금 시와는 달리 이상합금도금현상이 거의 나타나지 않았으며 $Co_{30}Fe_{70}$에서 가장 좋은 238emu/g의 포화자화 값을 나타내었다. We have investigated the electrochemical factors affecting the magnetic properties of hard magnetic CoP nanowires and soft magnetic CoFe nanowires fabricated by ac electrodeposition into self-made AAO(anodic aluminum oxide) nano-templates. AAO template having nano scale pores of high aspect ratio has been prepared through 2-step anodizing of aluminum foil in sulfuric acid. Hard Magnetic properties of CoP nanowires were highly conditional on the applied ac potential which could be a decisive factor to make CoP nanowires made up of either pure hcp crystals or a mixture of hop crystals and fcc crystals. On the contrary to CoFe films, there was no anomalous codeposition in the electrodeposition of soft magnetic CoFe nanowires which exhibited their best saturation magnetization of 238 emu/g at the composition of $Co_{30}Fe_{70}$.

백내장 수술 중 전방으로 관류된 증류수에 의한 각막부종 2예

이종욱,이호영,김성진,Jong Wook Lee,MD,Hoyoung Lee,MD,Sung Jin Kim,MD 대한안과학회 2011 대한안과학회지 Vol.52 No.4

Purpose: To report two cases of toxic corneal reaction induced by infusion of distilled water into anterior chamber during cataract surgery. Case summary: The first case was a 60-year-old female who was inadvertently infused with distilled water for 20 minutes during phacoemulsification in place of balanced salt solution (BSS). The second case was a 70-year-old male who received anterior chamber irrigation with distilled water for approximately 1 minute then and then immediately irrigated with BSS as soon as the mistake was identified. In both cases, topical 1% prednisolone acetate and 5% NaCl solution was immediately administered every hour as well as oral prednisolone at 1 mg/kg for one week after which the dose was slowly tapered. The first case completely returned to normal after 3 months, whereas the second case only requied 1 month to return to pre-surgery conditions. Conclusions: Patients who were exposed to distilled water within the anterior chamber resulted in corneal endothelial damage and corneal edema proportionate to the amount irrigated. However, The corneal edema gradually healed with treatment and eventually regained translucency without complications, completely. J Korean Ophthalmol Soc 2011;52(4):483-486

상부 180도 및 하부 180도 선택적 레이저 섬유주성형술의 효과 및 안정성 비교

이종욱,김은주,이태윤,이규원,Jong Wook Lee,MD,Eun Joo Kim,MD,Tae Yoon Lee,MD,Kyoo Won Lee,MD 대한안과학회 2012 대한안과학회지 Vol.53 No.11

Purpose: To compare the intraocular pressure (IOP)-lowering effect and safety between superior 180 degree and inferior 180 degree selective laser trabeculoplasty (SLT). Methods: Forty patients with primary open-angle glaucoma and normal tension glaucoma were treated with superior 180-degree SLT, and 28 patients with the same diagnosis were treated with inferior 180-degree SLT. IOP was checked at 1 day, and 1, 2, 3, and 6 months after SLT. Anterior chamber reaction and ocular pain was evaluated at postoperative 1 day. Peripheral anterior synechia was examined at 6 months postoperatively. Results: At the postoperative 6-month follow-up, the superior treatment group had a mean IOP of 15.53 ± 3.49 mm Hg with a mean reduction of 24.6%, while the inferior treatment group had a mean IOP of 17.18 ± 3.29 mm Hg with a mean reduction of 21.9%. There were no significant differences in IOP reduction between the 2 groups. There was a slightly higher anterior chamber reaction rate in the inferior treatment group. Conclusions: The site of SLT application is not important for IOP reduction. Both superior 180 degree and inferior 180 degree SLT are safe and effective procedures for glaucoma treatment because of successful IOP reduction and low complication risks.

재발성군날개 치료에 있어 항혈관내피성장인자 항체 베바시주맙을 적용한 임상효과

이종욱,박영정,김인택,이규원,Jong Wook Lee,Young Jeung Park,In Taek Kim,Kyoo Won Lee 대한안과학회 2008 대한안과학회지 Vol.49 No.12

Purpose: To clinically establish the effectiveness and safety of bevacizumab on recurrent pterygium. Methods: Twenty patients with recurrent pterygium were given a subconjunctival injection of 0.3 cc bevacizumab, and were evaluated for periodic clinical results at 1 week, 2 weeks, 4 weeks, and every month thereafter. The patients were also evaluated for clinical results and complications. Results: Of recurrent pterygium patients with bevacizumab injection, the conjunctival injection decreased maximally after 1 to 2 weeks, but significantly increased at 4 weeks (above the lowest level measured at 1 to 2 weeks), and no patient presented conjunctival injection above the pre-injection level at 3 months, except in 2 cases. Two weeks after the injection, ICG anterior segment angiography revealed a significant decrease (30.14+17.69%) in vessel thickness of the pterygium 2 weeks after the bevacizumab injection compared to before the injection. There had been no cases of progression of pterygium, and no ocular or systemic complications due to bevacizumab. Conclusions: As shown above in the results, subconjunctival injection of 0.3 cc bevacizumab decreased the conjunctival injection and effectively suppressed any further progression of pterygium. Thus, bevacizumab subconjunctival injection appears to be effective in recurrent pterygium treatment instead of surgical methods.

한국과학기술인용 DB를 반영한 JCR 분석연구

이종욱,양기덕,김병규,류범종,Lee, Jong-Wook,Yang, Ki-Duk,Kim, Byung-Kyu,You, Beom-Jong 한국과학기술정보연구원 과학기술정보센터 2012 Journal of Information Science Theory and Practice Vol.43 No.3

전 세계적으로 이용되는 인용색인 서비스인 Web of Science(WoS)는 데이터 수록 범위에 한계가 있음이 인용색인 연구에서 지적되어 왔다. 또한 국내 학술논문이 인용하는 해외 문헌의 비율이 전체의 약 75%를 차지한다는 것이 인용패턴 분석연구에서 밝혀진 바 있다. 본 연구에서는 WoS DB의 데이터 수록 범위를 검증하기 위한 첫 번째 단계로써 WoS DB에 포함되어 있지 않은 국내 연구자의 인용문헌 즉, 한국과학기술인용 DB(Korea Science Citation Database: KSCD)에 수록된 참고문헌 데이터 일부를 JCR 학술지 영향력지수 산출과정에 포함시켜 학술지 영향력 지수(Impact Factor: IF)의 변화 및 그에 따른 학술지 순위변동 여부를 조사하였다. 구체적으로 국내 문헌정보학 분야 학술지에 수록된 참고문헌을 JCR 2009 문헌정보학 분야 학술지 IF 산출과정에 포함하였다. 하지만 학술지 IF의 변화와 그에 따른 순위 차이가 통계적으로 유의하지 않았고, 이에 데이터 범위를 넓혀 컴퓨터 공학 및 전자공학 분야 학술지 45종에 수록된 참고문헌을 추가로 분석하여 JCR 2010 전자공학 분야 학술지 IF 산출과정에 포함하였다. 그 결과, 부분적으로 통계적으로 유의한 학술지 순위 변화가 일어났다. 본 연구는 한정된 데이터를 사용하였음에도 불구하고 미미하지만 통계적으로 유의한 JCR 학술지 순위 변동을 보여줌으로써 WoS DB에 포함되지 않은 인용 데이터의 잠재적 가치를 제시하였다. Citation analysis studies have reported many problems associated with data coverage problems common to popular citation databases such as Web of Science(WoS). In addition, the studies that analyzed citation patterns of Korean publications found that up to 75% of references in Korean publications were to international publications. As a first step in investigating the international coverage of WoS database, the study investigated the effect of adding citation data from Korea Science Citation Database(KSCD) to the impact factors and journal rankings of the journals listed in Journal Citation Reports. Specifically, the study mined the reference data from top 5 Korean Library and Information Science(KLIS) journals to recompute the impact factors reported in JCR 2009. Since the resulting journal rankings did not significantly differ from JCR 2009 rankings except for minor ranking changes, we analyzed additional citation data from 45 computer science and electrical engineering journals. Although the overall ranking difference was not statistically significant, one of the ranking partitions showed significant change. Such study findings despite its limited data sample suggest the potential impact of non-Western citation databases such as KSCD to bibliometric indicators provided by popular citation databases like WoS.

원발성 콩다래끼 환자에서 병소 내 트리암시놀론 주사요법과 절개배농술의 치료 효과 비교

이종욱,김성진,Jong Wook Lee,Sung Jin Kim 대한안과학회 2013 대한안과학회지 Vol.54 No.10

Purpose: To evaluate the effectiveness of intralesional triamcinolone acetonide injection, and incision and curettage for primary chalazia. Methods: In order to compare the effectiveness of treatment modality, 103 patients who were diagnosed with primary chalazia were divided into 2 groups. The patients in group A underwent intralesional triamcinolone acetonide injection and the patients in group B underwent incision and curettage. The patients were followed up 1 week and 3 weeks after the procedures to identify the regression of the lesion and the procedure complications. A decision regarding success or failure was made at 3 and 6 weeks after the treatment. Successful treatment was defined as the infallibility in the functional and esthetic aspects as well as the size of regressed lesion. Results: This study included 82 out of 103 patients, who satisfied the inclusion criteria. Forty-four patients underwent intralesional triamcinolone acetonide injection and the remaining 38 patients underwent incision and curettage. The success rate of the initial treatment, which was identified 3 weeks after the procedure, was 81.8% in group A and 86.8% in group B. The cumulative success rate of treatment after 6 weeks was 86.8% in group A and 92.1% in group B. No complications were observed with both treatment modalities. Conclusions: Intralesional triamcinolone acetonide injection is as effective and safe as incision and curettage for the treatment of primary chalazia.

복합 적층판에 대한 Layerwise 이론을 이용한 응력 제약 위상최적설계

이종욱(Jong wook Lee),김종진(Jong Jin Kim),윤길호(Gil Ho Yoon) 대한기계학회 2018 대한기계학회 춘추학술대회 Vol.2018 No.4

ABS의 PEDAL FEELING 개선

이종욱(Jong-Wook Lee),김차환(Cha-Hwan Kim),이상철(Sang-Cheol Lee),김영일(Young-il Kim) 한국자동차공학회 1994 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-

Despite short history, ABS is wide-spread even to small cars, which brought us a new concept in ABS. While ABS price is being lowered to enable car makers to install one without considerable up-cost, we meet another tendancy to develop pedal feeling improved version of ABS modulator especially for luxury cars.<br/> In this study, kick-back mechanism was investigated and with the result of which new hydraulic circuit was proposed to improve pedal feeling based on current ABS modulator being produced by Mando.<br/> New ABS modulator was developed, followed by design of parts and packaging needed accordingly. Evaluation of new modulator via rig test and vehicle test shows that the pedal feeling is successfully enhanced.<br/>

CFVS 시스에서 분배관 사이즈와 스크러버 배치에 따른 유동균일에 대한 수치해석적 연구

이종욱(Jong Wook Lee),김현수(Hyun Soo Kim),김원석(Won Seok Kim) 대한기계학회 2014 대한기계학회 춘추학술대회 Vol.2014 No.4-3

급성 임파구성 백혈병의 치유를 위한 동종골수이식

이종욱(Jong Wook Lee),김동욱(Dong Wook Kim),한치화(Chi Hwa Han),홍영선(Young Seon Hong),박종원(Chong Won Park),김춘추(Choon Choo Kim),김동집(Dong Jip Kim),김학기(Hack Ki Kim),한경자(Kyung Ja Han),김원일(Won Il Kim) 대한내과학회 1989 대한내과학회지 Vol.36 No.3

N/A Although half of the cases of acute lymphocytic leukemia (ALL) in children have been cured by chemotherapy alone, a dilemma still remains as to the choice of the appropriate therapeutic regimens for childhood ALL in relapse and adult ALL. Recently, 10 patients with ALL were given a supralethal dose of cytoreductive chemoradiotherapy followed by HLA-identical bone marrow transplantation. Among them, only one patient who had been refractory to conventional intensive chemotherapy died of acute renal failure, possibly due to toxicities of the drugs, including long term use of amphotericin-B as well as cyclosporin-A before complete recovery of pancytopenia. Nine patients are enjoying complete remission ranging from 3 to 68 months (median 12 months). Even if the observation period seems to be limited, there were no deaths due to venoocclusive, disease, graft failure, graft versus host reaction, interstitial pneumonia and/or relapse. The actuarial two year disease free survival is 90%. There is still controversy as to determination of the correct 'Timing' for allogeneic bone marrow transplantation in ALL. But we would like to recommend allogeneic bone marrow transplantation for patients with childhood ALL in the advanced state as well as for even minimal residual disease among poor risk groups.