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아파트 단위 세대의 수직 위치 별 에너지 및 물 사용 규모와 패턴에 관한 연구
송동훈(Song, Dong-Hun),김경태(Kim, Kyung-Tae),이승준(Lee, Seung-Jun),신현익(Shin, Hyun-Ik) 대한건축학회 2017 대한건축학회논문집 Vol.33 No.12
The purpose of this study is to present an integrated analysis for energy use and its patterns as vertical locations of the dwelling units in apartment buildings which are located in an urban area and constructed by a renowned contractor. In order to enhance the effectiveness of the method, the original data of electricity, water, and gas bills which directly reflect the energy use are sorted and analyzed into several groups as vertical locations in each building. And also, by use of comparing and contrasting the data on a monthly and yearly basis, the accuracy of analyses for seasonal energy use and its patterns is strengthened. Comparative analyses used in this study describe the results that vertical locations of dwelling units do not have much influence on electricity and water usage, but are closely related with gas usage for a heating season. According to the analysis of gas usage, the units on the ground and right above pilotis need enhancement in the insulations for heating to mitigate energy loss. Also, the analysis for the middle floor units in each group describe the fact that the gas usage of the units on the ground is consumes 1.5 times greater than that of the typical floors. Therefore, enhanced insulation strategies need to be considered against the adverse condition that the heat loss increases as the wall facing the outside air increases or as the wind velocity increases through the pilotis.
다층 속말림 내경계막 절편술을 이용한 크기가 큰 황반원공의 치료
송동훈(Dong Hun Song),염명인(Myeong In Yeom),박정민(Jung Min Park) 대한안과학회 2018 대한안과학회지 Vol.59 No.5
Purpose: To describe a multi-layered inverted internal limiting membrane (ILM) flap technique and to evaluate the surgical outcomes of this surgery in patients with macular holes > 800 μm in base diameter. Methods: The medical records of patients who received a multi-layered ILM flap technique were retrospectively studied and patients with macular holes > 800 μm were included in the analyses. Best-corrected visual acuity (BCVA) before and after surgery, preoperative hole size, hole base size, vertical size, and hole closure after surgery were checked using spectral domain optical coherence tomography. Pars plana vitrectomy was performed and the ILM was stained using indocyanine green and peeled with the base attached at the hole margin. The ILM flap was inverted over the macular hole with 2~3 layers, and gas injection was performed. Results: The mean age of 12 patients was 65.2 ± 12.3 years. The mean BCVA (logMAR) was 1.27 ± 0.61. The mean hole size was 563.6 ± 221.9 μm, the mean vertical size was 418.8 ± 80.9 μm, and the mean hole base size was 1,182.8 ± 298.5 μm. The mean follow-up period was 174.4 ± 143.3 days. Nine macular holes were closed after surgery but three macular holes were not closed. The postoperative mean BCVA (logMAR) was 0.21 ± 0.51. Eight eyes showed visual improvement while three eyes did not show visual improvement after macular hole surgery. Conclusions: The macular hole was closed successfully and the visual acuity improved after the multi-layered, inverted ILM flap technique. The multi-layered, inverted ILM flap technique is therefore considered the treatment of choice for large macular holes. J Korean Ophthalmol Soc 2018;59(5):428-436
마이크로버블과 환원제를 이용한 습식 NO 및 SO₂의 동시제거
송동훈(Dong Hun Song),강조홍(Jo Hong Kang),박현식(Hyun Sic Park),송호준(Hojun Song),정용철(Yongchul G. Chung) 한국청정기술학회 2021 청정기술 Vol.27 No.4
연소시설에서는 화석연료에 포함된 질소와 황이 산소와 반응하여 대기 오염물질인 질소산화물(NOX)과 황산화물(SOX)을 발생시킨다. 인체에 유해하고 환경 오염을 야기하는 NOX, SOX를 저감하기 위해 전세계적으로 환경규제를 시행 중이며, 규제를 충족하기 위해 다양한 기술들을 적용하고 있다. 상용화된 NOX 및 SOX 저감방식들로 SCR (selective catalytic reduction), SNCR (selective non-catalytic reduction), WFGD (wet flue gas desulfurization) 등이 있으나 이 방식들의 단점들 때문에 NOX, SOX를 동시제거하는 연구가 근래 많이 수행되고 있다. 그러나 NOX, SOX 동시 제거 방식에서도 산화제 및 흡수제로 인한 폐수 발생에 대한 문제점, 특정 산화제를 활성화 하기 위한 촉매 및 전기분해 사용에 따른 비용 발생, 마지막으로 기체 산화제들 자체 유해성의 문제점을 가지고 있다. 따라서 본 연구에서는 NOX, SOX 동시처리 방식의 단점들을 보완하고자 고압분산기에서 생성된 마이크로버블과 환원제를 이용하여 비용절감 및 폐수처리 시 환경부하저감 가능성을 확인해 하고자 하였다. 분산기가 마이크로버블을 생성하는 것을 이미지 프로세싱과 ESR (electron spin resonance) 분석을 통해 확인하였으며, 마이크로 버블만을 이용하여 온도에 따른 NOX, SOX 제거율 성능 테스트도 진행하였다. 뿐만 아니라 폐수를 저감하기 위해 환원제와 마이크로버블을 이용하여 습식으로 NOX 제거율 약 75%, SOX 제거율 99%를 달성하였다. 본 마이크로버블 시스템에 산화제를 함께 투여할 경우 NOX, SOX제거율 모두 99%이상을 달성 하였다. 이러한 연구 결과를 토대로 습식산화제거방식을 적용하는 시설의 단점이었던 비용 및 환경 문제를 해결함에 기여할 수 있을 것으로 기대 된다. In combustion facilities, the nitrogen and sulfur in fossil fuels react with oxygen to generate air pollutants such as nitrogen oxides (NOX) and sulfur oxides (SOX), which are harmful to the human body and cause environmental pollution. There are regulations worldwide to reduce NOX and SOX, and various technologies are being applied to meet these regulations. There are commercialized methods to reduce NOX and SOX emissions such as selective catalytic reduction (SCR), selective non-catalytic reduction (SNCR) and wet flue gas desulfurization (WFGD), but due to the disadvantages of these methods, many studies have been conducted to simultaneously remove NOX and SOX. However, even in the NOX and SOX simultaneous removal methods, there are problems with wastewater generation due to oxidants and absorbents, costs incurred due to the use of catalysts and electrolysis to activate specific oxidants, and the harmfulness of gas oxidants themselves. Therefore, in this research, microbubbles generated in a high-pressure disperser and reducing agents were used to reduce costs and facilitate wastewater treatment in order to compensate for the shortcomings of the NOX, SOX simultaneous treatment method. It was confirmed through image processing and ESR (electron spin resonance) analysis that the disperser generates real microbubbles. NOX and SOX removal tests according to temperature were also conducted using only microbubbles. In addition, the removal efficiencies of NOX and SOX are about 75% and 99% using a reducing agent and microbubbles to reduce wastewater. When a small amount of oxidizing agent was added to this microbubble system, both NOX and SOX removal rates achieved 99% or more. Based on these findings, it is expected that this suggested method will contribute to solving the cost and environmental problems associated with the wet oxidation removal method.
발전된 건물의 성능평가기법(ABQET)을 이용한 다목적 강당의 현황과 실태에 관한 조사연구 - 구미시를 중심으로 -
김경태,송동훈,이승준,신현익,Kim, Kyung-Tae,Song, Dong-Hun,Lee, Seung-Jun,Shin, Hyun-Ik 한국교육시설학회 2017 敎育施設 Vol.24 No.4
Since the education law was changed in 1997, schools for K-12 education are required to build a multi-purpose auditorium which accommodates auditorium and a gymnasium functions. Evaluation of the present status of multi-purpose auditoriums will provide a clear direction for improvements in planning and design stages. The purpose of this research identifies the current status and major drawbacks of the multi-purpose auditorium through applying a performance evaluation tool kit called the Advanced Building Quality Evaluation Techniques(ABQET) and Graphic Analysis of Quality Quotient (GAQQ). In addition, the research will provide future foundations for planning and design methods for a multi-purpose auditorium.
이승헌(Seung Hun Lee),조무연(Moo Yon Cho),이민걸(Min Geol Lee),송동훈(Dong Hoon Song),이선주(Sun Ju Lee),이광길(Kwang Gil Lee) 대한피부과학회 1988 대한피부과학회지 Vol.26 No.4
Amyloidosis is a disease complex associated with deposition of insoluble filbrillar protein in various tissues of the body. Cutaneous lesions are present in up to 40 % of patients with primary and myeloma associated systemic amyloidosis. We present a case of systemic amyloidosis associated with multiple myleoma occuring in 54-year-old male who had waxy papules with petechiae on nasola bial fold, postauricular area, and cheek. The diagnosis was confirmed by Congo red stain, electron microscope, immunelectrophoresis, Bence-Jones proteinuria, immunoperoxidase stain, and bone marow biopsy.
선천성 심장질환 환자에서 발생한 Atrophoderma Vermiculatum
심우철(Woo Chul Shim),송동훈(Dong Hoon Song),이승헌(Seung Hun Lee),김동수(Dong Soo Kim) 대한피부과학회 1989 대한피부과학회지 Vol.27 No.2
A 6-year old girl was diagnosed as atrophoderma vermiculatum on face, especially on cheek and preauricular area, and dorsum of both hands. She had suffered from congenital heart disease which was diagnosed as ventricular septal defect by cardiac: catheterization and cineangiography in final. Three months after patch repair of ventricular septal defect, no further new skin lesion developed. But reticulate skin atrophy was remained.