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송종의(Song Jong-Eui),임현우(Lim Hyun-Woo),이준호(Lee Jun-Ho),이중훈(Lee Joong-Hoon),송두삼(Song Doo-Sam) 대한건축학회 2009 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.29 No.1(계획계)
Super tall building has many advantages but also has some problems such as stack effect. Stack Effect is a general phenomenon that arouse in a building. However, the building height is higher and higher, a lot of air flow into building and moved to the upper part of the building and cause a variety of problems. On the while, many super tall buildings were made and planned in the world and korea in these days. So we need to understand the stack effect in super tall buildings and make a counter measures to mitigate the stack effect. The purpose of this study is to grasp the characteristics of stack effect in super tall building through numerical simulation. In this paper, the characteristics of stack effect for super tall building(100 floors) are compared to those of high-rise building(43 floors). Moreover, the wind effect on stack effect will be analyzed.
스텐트 재협착 병변에서 약물코팅 풍선카테터과 약물용출 스텐트의 예후 분석
이두환 ( Doo Hwan Lee ),송종남 ( Jong Nam Song ),박신의 ( Sin Eui Park ),최남길 ( Nam Gil Choi ),한재복 ( Jae Bok Han ),김인수 ( In Soo Kim ) 한국방사선학회 2019 한국방사선학회 논문지 Vol.13 No.3
약물용출 스텐트(drug-eluting stents, DES)는 일반 금속 스텐트에 비하여 재협착을 현저하게 줄였지만, 여전히 관상동맥 스텐트 재협착은 비율이 높다. 2012년 11월부터 2016년 12월까지의 일 대학교병원 심혈관센터에서 경피적 관상동맥 스텐트 삽입술 후 관상동맥 조영술에서 스텐트 재협착 환자 187명 그룹 I (약물코팅 풍선카테터 사용, n=127명), 그룹 II (약물용출 스텐트 사용, n=60명)로 분류하여 치료효과, 주요심장사건, 사망 발생률, 심근경색, 표적병변 재개통술 그리고 스텐트 혈전등을 2년 동안 추적 분석하였다. 임상적 특성는 두 그룹간 차이는 없었고(21.1 ± 5.3 vs. 25.3 ± 9.6 mm, p<0.002), 혈관조영검사에서 약물코팅 풍선카테터 사용 그룹에서 스텐트 재협착 길이가 짧았다. 주요심장사건은 8.7%vs.10.0%, p=0.789, 사망발생률0%vs.0%,p=1.000, 심근경색 1.6%vs.6.7%, p=0.085, 표적병변 재개통술 8.7% vs. 10.0%, p=0.789 그리고 스텐트 혈전증 0% vs. 0%, p=1000에서 양군 간에 차이를 보이지 않았다. 약물코팅 풍선카테터가 약물방출 스텐트와 비교하여 2년 추적 검사 결과 주요심장사건에서 차이가 없었고, 약물코팅 풍선카테터는 스텐트 재협착 병변에서 약물방출 스텐트와 함께 선택할 수 있는 좋은 치료방법이라고 사료된다. Although the development of Drug-eluting stent (DES) improved the ISR significantly more than the Bare metal stent (BMS), the coronary stent restenosis (ISR) treatment still has a high recurrence rate. This study is compared the efficacy of DEB with that of DES implantation in patients with ISR. Among 4,316 patients who underwent coronary stent implantation at the Chonnam National University Hospital between November 2012 and December 2016, 187 patients developed ISR on follow-up coronary angiography (66.3 ± 11.0 years, 123 males) were enrolled and divided into two groups according to revascularization method as group I (DEB group; n= 127) and group II (DES group; n= 60). Primary end point was defined as major adverse cardiac events (MACEs), composite of cardiac death (CD), myocardial infaction (MI), target lesion revascularization (TLR) and stent thrombosis (ST) during two-year follow-up between the two groups. There were no differences in the baseline characteristics and angiographic findings except that prevalence of device length was shorter (21.1 ± 5.3 vs. 25.3 ± 9.6 mm, p<0.002) in group I.Two-year MACE were not different in the two groups (8.7%vs.10.0%, p=0.789). The incidences of cardiac death (0%vs.0%, p=1.000), MI (1.6%vs.6.7%, p=0.085), TLR(8.7% vs. 10.0%, p=0.789) and ST (0% vs. 0%, p=1000). DEB demonstrated comparable risk reduction for MACEs compared with DES in patients with ISR during two-year follow-up. DEB might be good alternative for the treatment of ISR in patients with ISR
공동주택 지하주차장의 자연환기성능 향상방안에 관한 연구
서정민(Jung-Min Seo),이중훈(Joong-Hoon Lee),송종의(Jong-Eui Song),정정화(Jung-Hwa Jung),송두삼(Doo-Sam Song) 대한설비공학회 2011 설비공학 논문집 Vol.23 No.2
Energy efficiency and indoor air quality have become main issue to develop healthy and sustainable building in these days. As an effort to reduce the energy consumption in multiresidential building, many attempts as like passive design strategies and renewable energy as well as active control method are tried. However, underground parking lot in multi-residential building seldom adopt the sustainable strategies and only mechanical system is installed as usual. Moreover, the mechanical system installed in underground parking lot is rarely operated due to the electric demand for operation after completion. In this study, as an energy efficient measure, natural ventilation system using stack effect as a driving force for underground parking lot will be proposed and the performance of the suggested system will be analyzed by simulation method.
이준호(Lee June-Ho),임현우(Lim Hyun-Woo),송종의(Song Jong-Eui),이중훈(Lee Joong-Hoon),송두삼(Song Doo-Sam) 대한건축학회 2009 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.29 No.1(계획계)
The stack effect in high-rise buildings is more remarkable with the building height is higher and higher and the temperature difference between outdoor and indoor space is larger. Moreover the stack effect can be brought about the deterioration of many kind of problems. In this study, as a measure to attenuate the stack effect, the E/V shaft cooling method was proposed and the performances were compared with the conventional stack effect control method as strengthening the building air-tightness by numerical simulation method. The total decreasing ratios on the draft in a building were mainly compared with each other, and the probabilities of the secondary problems and the leduction effect on ΔP at each wall of the building were analyzed also. The results show that the E/L shaft cooling is very effective as the measure to decrease the draft and ΔP in high-rise building. Also, this method does not cause the secondary problems such as stack pressure transition to other walls as shown in conventional stack effect decreasing method.