비마토프로스트 점안 후 발생한 깊은 위눈꺼풀고랑 2례

이중원,김대윤,이용길.Joong Won Lee. M.D.. Dae Yune Kim. M.D.. Yong Kil Lee. M.D. 대한안과학회 2007 대한안과학회지 Vol.48 No.2

Purpose: To report two cases of deepening of the upper lid sulcus following bimatoprost. Methods: A 54-year-old woman who used bimatoprost for one week and a 70-year-old woman who used bimatoprost for 4 months developed deep lid sulcus. Both were using bimatoprost for glaucoma treatment. Results: Both patients also showed improvement of dermatochalasis and widening of the palpebral fissure. One week after discontinuing bimatoprost, the lid sulcus of the 54-year-old returned to baseline and exophthalmometry was unchanged. The orbital CT of the 70-year-old was normal. She did not complain about deepening of the lid sulcus, and she has not discontinued treatment due to this adverse effect.

눈물소관 열상의 최소 봉합 눈물소관 복원술

이중원,김광수,강정훈,Joong Won Lee,Kwang Su Kim,Jung Hoon Kang 대한안과학회 2008 대한안과학회지 Vol.49 No.5

Purpose: To examine the results of minimal stitch on the restoration of tissue after canalicular laceration. Methods: We have operated using sutures of tissues around canalicular laceration by inserting bicanalicular silicone stents and minimal horizontal mattress sutures with 8-0 Vicryl in cases of canalicular laceration instead of the existing method for the past 6 years. The ages of patients ranged from 2 to 76 years (average age 39.8 ±17.4 years), with most patients in their thirties (12 patients, 40%), 30 cases underwent canalicular repair with minimal stitch and bicanalicular silicone stent insertion within 24 hours after trauma. The silicone stent was removed 3 months after the operation if the patient did not complain of epiphroa while the canalicular remained open. Results: Twenty-five eyes (83.3%) showed symptom improvement and good passage in lacrimal syringing test in 4~12 months (average: 6.8±2.2 months) of follow-up study. Complications included one case each of fistula formation, stent prolapse, and wound infection, and two cases of canalicular stenosis. Conclusions: We recommend this method because of its satisfying success ratio.

SF₆ 분해 및 무해화 시스템의 개념 설계 및 운영 결과

이중원,김미영,안지호,변영환,Joongwon, Lee,Miyeong, Kim,Jiho, Ahn,Younghwan, Byun Korea Electric Power Corporation 2022 KEPCO Journal on electric power and energy Vol.8 No.2

SF₆ is used as an insulating gas because of its excellent electrical insulation properties, non-toxicity, and non-inflammability. On the other hand, the global warming potential of SF₆ is 23,900 times higher than that of CO₂. The Korea electric power cooperation (KEPCO) is responsible for 80% of the domestic SF₆ usage, and approximately 6,000 tons are currently charged in electrical and power facilities. KEPCO will gradually replace the insulating gas with SF₆-free gas from 2023. SF₆ decomposition facilities are required because more than 60 tons of SF₆ will need to be disposed of annually from existing equipment. This study developed a novel decomposition and pollution control system that can process 60 tons of SF₆ per year. This facility can decompose more than 97.7% of SF₆, with the emissions of hazardous and toxic materials below the legal limit.

21세기와 대학의 인문교육

이중원,Lee, Jung-Won 한국대학교육협의회 2000 大學敎育 Vol.106 No.-

나노 물질 및 제품의 안전 관리: 윤리적 원리 및 행위지침 고찰

이중원,Lee, Jung-Won 한국진공학회 2010 Applied Science and Convergence Technology Vol.19 No.6

Recently as the reports on toxicity of some nanomaterials and the nanoproducts containing these nanomaterials are rapidly increasing, the safety management issues about nanomaterials and nanoproducts are emerging hot. Especially safety in the workplace and that of consumers and the protection of environment, in other words safeties throughout the life-cycle of nanomaterials and products become core issues. Despite the importance of such a safety management, however, it is very difficult to construct the hard regulatory framework for safety, owing to uncertainties and potentialities of nano-risk. In this paper I will look around the ethical principles and guidelines for safety management which are preferentially required before going into the discussion on the construction of hard-regulation such as law and something like that. Under the circumstance that hard-regulations for safety management are not implementable, these principles and guidelines are expected to play a leading part in building the responsible risk-governance framework for nanomaterials and nanoproducts, and finally to become a cornerstone of the hard risk-governance framework. 최근 나노 물질의 독성에 대한 보고와 나노 물질을 함유한 제품들의 급속한 증가 그리고 제조 과정에서의 나노 물질의 폭 넓은 응용으로 인해, 나노 물질 및 제품의 안전 관리 문제가 중요한 쟁점으로 부상하고 있다. 특히 작업장에서의 안전, 제품을 사용하는 소비자의 안전 그리고 환경 보호 등 나노 물질 및 제품의 전주기 과정에 걸친 안전 확보가 문제다. 하지만 나노 물질 및 제품의 위험이 잠재적이고 불확정적이기에, 이것들을 대상으로 하는 엄격한 안전 관련 규제체계를 구축하는 것은 어렵다. 본 논문에서는 이러한 쟁점들과 관련하여 나노 물질을 연구 개발하고 나노 제품을 생산하는 각 기관들이 안전에 관한 책임 있는 거버넌스(governance)를 구현하기 위해 현재 최선의 것으로 취할 수 있는(엄밀히 말해 취해야 하는) 윤리적인 행위 조치들과 이에 바탕이 되는 윤리적인 원리들을 살펴보고자 한다. 그리고 이것이 법적.제도적인 차원의 견고한 안전관리 체계를 구축하는데 중요한 한 축을 형성함을 강조하고자 한다.

신선가공 고탄소 강선에서의 시효현상과 딜라미네이션 발생간의 상관관계 고찰

이중원(J. W. Lee),이종철(J. C. Lee),강의구(U. G. Gang),이용신(Y. S. Lee),박경태(K. T. Park),남원종(W. J. Nam) 한국소성가공학회 2009 한국소성가공학회 학술대회 논문집 Vol.2009 No.5

The effects of annealing temperature and time on mechanical properties and microstructures were already investigated in cold drawn pearlitic steel wires. During annealing, the increment of the tensile strength at low temperatures found to be due to age hardening, while the decrease in the tensile strength at high temperatures was attributed to age softening, involving the spheroidization of lamellar cementite and recovery of lamellar ferrite. Since Between increase of tensile strength and the occurrence of the delamination would be closely related to the dissolution of cementite, the increase of drawing strain by lower annealing temperature caused the between higher tensile strength and the easier occurrence of the delamination in cold drawn pearlitic steel wires.

일반논문 : 나노기술이 던지는 새로운 철학적 문제들에 대한 고찰

이중원 ( Jung-won Lee ) 서울시립대학교 도시인문학연구소 2016 도시인문학연구 Vol.8 No.1

나노기술은 기본적으로 다음과 같은 두 가지 능력을 특별히 지니고 있다. 하나는 세포 보다 훨씬 작은 미세한 분자 수준에서도 기계적인 조작을 수행할 수 있다. 다른 하나는 이러한 조작을 통해 새로운 특성을 지닌 나노물질들은 물론 새로운 기능성을 지닌 특정한 구조의 신물질들을 제조해 낼 수 있다. 이러한 능력으로 인해 나노기술은 생명체, 자연, 기술을 바라보는 새로운 형이상학적 관점과 자연적 존재자와 인공적 존재자의 구분에 관한 새로운 존재론적 문제를 비롯하여, 나노세계에 대한 경험적 증거로서의 나노 이미지가 지니는 인식적 특성과 역할에 대한 문제제기, 그리고 나노기술이 인체 및 환경에 가하는 위험으로부터 발생되는 안전 관련 윤리적인 문제들에 이르기까지 기존의 철학적 사유에 새로운 활기를 불어 넣어 주고 있다. 이 논문에서는 나노기술의 발전이 새롭게 던져주고 있는 철학의 문제들, 곧 존재론적·인식론적 문제들 그리고 윤리적 문제들을 구체적으로 살펴봄으로써, 첨단 과학기술의 발달로 철학적 성찰에도 어떤 변화가 요청되는지를 짚어보고자 한다. Nanotechnology has two special capacities. One is to operate mechanically in the lower scale rather than molecular levels. Another is to produce or create new materials with new properties or special functions through the operation. Owing to these capacities, nanotechnology throws some philosophical issues on us, that is, metaphysical viewpoint of a life, nature and technology itself and ontological problems such as the distinction between natural entities and artificial entities. Futhermore following issues are controversial such as whether nano-images of nano-world are relevant as an empirical evidence or not and what are the epistemic characteristics and roles of nano-images. And also some ethical issues with respect to the risk or hazard of nano-particles influencing on human beings and environment are newly occurring. These issues are expected to result in fresh thinking positively in the area of philosophy. In this paper I would like to search and examine the new philosophical issues, that is, ontological, epistemological and ethical ones which is required in response to the development of nanotechnology nowadays.

온도증가에 따른 콘크리트의 색상과 잔존압축강도의 변화

이중원(Lee Joong-Won) 대한건축학회 2011 大韓建築學會論文集 : 構造系 Vol.27 No.1

When reinforced concrete is subjected to high temperatures, compressive strength and elastic modulus of concrete, ductility and yield stress of steel decrease. Degradation of these properties after such an exposure may result in undesirable structural failures and are great importance in terms of the serviceability of buildings. Therefore, changes in material's properties have to be evaluated in decide whether the buildings exposed to high temperature effect will be repaired or demolished. Assessment of fire damaged concrete usually starts with visual observation of color change, crazing, cracking, and spalling. On heating, a change in color from normal to a pink/red is often observed and this is useful since it coincides with the onset of significant loss of concrete strength. The purpose of this study is to quantify changes in color for concrete using spectrophotometric method and to identify the relationship between color change and residual compressive strength loss of concrete as temperature increases. For this purpose, we manufactured concrete samples with varying water-to-cement ratios and heated them to target temperatures of 100, 200, 300, 400, 500, 600, 700 and 800℃ in an electric oven, whereupon their color changes and residual compressive strengths were measured for analysis. The result of the study shows that color change and residual compressive strength in a concrete structure exposed to high temperature have a consistent relationship in quantitative equation, therefore, it may be possible to know how much compressive strength of the concrete reduces by measuring color changes and estimating heating temperature.

공유경제 플랫폼 성과에 영향을 미치는 요인

이중원(Lee, Jung Won),박철(Park, Cheol) 한국IT서비스학회 2016 한국IT서비스학회 학술대회 논문집 Vol.2016 No.춘계

2008년 글로벌 금융위기 이후 유래 없는 저성장과 높은 실업률을 겪으며 과도한 소유권보다는 사용가치를 중시하는 공유경제(Sharing Economy) 개념이 대두되었다. 미국 시장조사기관 매솔루션(Massolution)에 의하면 2010년 8.5억불이던 공유경제 시장 규모는 2014년 100억불 수준으로 4년 사이 1000% 이상 증가했다. 공유경제에 대한 학계의 관심도 높아지고 있다. 하지만 최근 공유경제의 대두배경을 설명할 수 있는 핵심 요소인 IT 플랫폼의 역할에 대한 연구는 미미한 실정이다. 본 연구에서는 공유경제의 기존연구를 바탕으로 공유경제 플랫폼 성과에 영향을 미치는 요인에 대해 연구해 창업자와 연구자들에게 의미 있는 시사점을 제공하고자 한다.

측정에 대한 새로운 접근과 슈뢰딩거의 고양이: 스테른 겔락의 실험을 통한 정당화

이중원 ( Jung Won Lee ) 한국과학철학회 2009 과학철학 Vol.12 No.1