Low-Z Particle Electron Probe X-ray Microanalysis법을 이용한 2001년 ACE-Asia 집중 측정 기간 중 제주도 고산에서의 입자상 물질의 특성분석

안용훈,김혜경,노철언 한국대기환경학회 2004 한국대기환경학회지 Vol.20 No.6

Low-Z particle electron probe X-ray microanalysis (low-Z particle EPMA) was applied to characterize aerosol particles collected at Gosan in Jeju island during an IOP(intensive observation period) for an international ACE-Asia project In April, 2001. Various types of atmospheric particles such as organics, carbon-rich, aluminosilicates, silicon oxide, sodium nitrate, sodium chloride, and ammonium sulfate were observed The reacted sea salt particles such as sodium nitrate were the most abundantly encountered, but original sea salt particles were rarely observed Since the Low-Z particle EPMA can provide quantitative information on the chemical composition of aerosol particles many different particle types on the basis of their chemical compositions were observed and identified In this study, It is demonstrated that the Low-Z particle EPMA can provide detailed information on the chemical compositions for the aerosol particles collected for six consecutive days in April, 2001, at Gosan super-site

高層아파드 團地의 形狀要素에 관한 硏究(Ⅱ) : 公共開發과 民間開發의 形狀 比較를 中心으로 Centering on the Comparison of Public and Private Development Apartment Building

安容勳,朴文瑀,趙容準 조선대학교 국토개발연구소 1991 국토개발연구 Vol.11 No.1

The figure of apartment house estate is much depended on not only a natural factor, an artificial factor, and a legal constriction factor but also a developing subject. Among them the developing subject gives much influence to a figure decision of the apartment house estate. So because it makes a start point of a plan of the apartment house estate that the apartment house constructed by the public development is pursued a public interest and the apartment house by the private one a private interest respectively by the developing subject, there is a difference in the figure of the apartment housing estate. And under the premise that it influences in a construction factor of an estate formation, this study is started. The object of study is restricted to the hogher stories apartment house of over 10 stories, and I make 12 estates an object of this study such as a private apartment house of over 400 households and an apartment house that is offered for public subscription at the public authorities. Thus, in this study, I analyze a problem about the estate circumstances caused in a crowded space in establishing a direction of the plan of the desirable estate figure in the higher stories apartment house, and its result is as dollows. 1) The apartment house constructed by the public development is given priority to a plan of outside, and, on the other hand, the apartment house constructed by the private one a plan of inside space. 2) The figure of the apartment house constructed by the public development is quite diversified through a draft of public suscription for prize, but the almost apartment house constructed by the private fevelopment is emphasized on a simpie layout so the diversity is treated roughly. So, in the future, it is necessary to create a diversified figure of formation by harmonizing it to a topography positively. 3) The apartment house constructed by the public development prefers to an introduction of an encirclirg conception so the major buildings are laid to the point of view. On the other hand, the apartment house constructed by the private one prefers to a placement of southern exposure so the major buildings are laid to the point of view. 4) According to the figure of the apartment house estate, the apartment house constructed by the public devlopment is more advantageous than the apartment house constructed by the private one in a consideration about a privacy, a view, an individuality, and a domain, but in an approach, the apartment house constructed by the public one. 5) Because the uniform parallel placement becomes a factor that makes "I" conception emphasize in our conception, a charcteristics as an estate is to be maximized through the diversity of placement.

방사방향 배수를 고려한 초연약 지반의 비선형 유한변형 자중압밀 거동 분석

안용훈,곽태훈,이철호,최항석,최은석 한국지반공학회 2010 한국지반공학회논문집 Vol.26 No.11

Vertical drains are commonly used to accelerate the consolidation process of soft soils, such as dredged materials, because they additionally provide a radial drainage path in a deep soil deposit. In practice, vertical drains are commonly installed in the process of self-weight consolidation of a dredged soil deposit. The absence of an appropriate analysis tool for this situation makes it substantially difficult to estimate self-weight consolidation behavior considering both vertical and radial drainage. In this paper, a new method has been proposed to take into account both vertical and radial drainage conditions during nonlinear finite strain self-weight consolidation of dredged soil deposits. For 1-D nonlinear finite strain consolidation in the vertical direction, the Morris (2002) theory and the PSDDF analysis are adopted, respectively. On the other hand, to consider the radial drainage, Barron’s vertical drain theory (1948) is used. The overall average degree of self-weight consolidation of the dredged soil is estimated using the Carillo formula (1942), in which both vertical and radial drainage are assembled together. A series of large-scale self-weight consolidation experiments being equipped with a vertical drain have been carried out to verify the analysis method proposed in this paper. The results of the new analysis method were generally in agreement with those of the experiments.

방사방향 배수들 고려한 초연약 지반의 비선형 유한변형 자중압밀 거동 분석

안용훈(An, Yonghoon),곽태훈(Kwak, Taehoon),이철호(Lee, Chulho),최항석(Choi, Hanseok),최은석(Choi, Eunseok) 한국지반공학회 2010 한국지반공학회논문집 Vol.26 No.11

Vertical drains are commonly used to accelerate the consolidation process of soft soils, such as dredged materials, because they additionally provide a radial drainage path in a deep soil deposit. In practice, vertical drains are commonly installed in the process of self-weight consolidation of a dredged soil deposit. The absence of an appropriate analysis tool for this situation makes it substantially difficult to estimate self-weight consolidation behavior considering both vertical and radial drainage. In this paper, a new method has been proposed to take into account both vertical and radial drainage conditions during nonlinear finite strain self-weight consolidation of dredged soil deposits. For I-D nonlinear finite strain consolidation in the vertical direction, the Morris (2002) theory and the PSDDF analysis are adopted, respectively. On the other hand, to consider the radial drainage, Barron`s vertical drain theory (1948) is used. The overall average degree of self-weight consolidation of the dredged soil is estimated using the Carillo formula (1942), in which both vertical and radial drainage are assembled together. A series of large-scale self-weight consolidation experiments being equipped with a vertical drain have been carried out to verify the analysis method proposed in this paper. The results of the new analysis method were generally in agreement with those of the experiments.

천연추출물을 포함하는 액상밴드에 관한 기술개발전략

안용훈, 이영성, 나형철 충북대학교 국가미래기술경영연구소 2016 기술경영 Vol.1 No.1

최근 의료기술의발전과 더불어 화상 등 외상에 의한 피부재생기술은 많이 발전되어왔으나, 회복후 남 는 흉터의 경우 치료에 한계가 있어 과도한 흉터는 환자의 심적 고통과 사회생활 위축, 과도한 치료시 도에 의한 의료비용 증가 등 여러 가지 문제를 야기해왔으며, 특히 밴드타입은 굴곡부위 및 국소부위 의 빠른 치료가 어렵다는 점 및 외관상 보기 좋지 않은 단점이 부각되면서 액상창상피복재에 대한 소 비자 관심도가 증가하고 있는 상황이다. 특히 비대성 흉터 및 켈로이드는 미연에 방지하기도 어렵고, 성공적으로 치료하기는 매우 어려운 상 태이며, 이러한 흉터 치료에 있어 최근까지 절제술, 압박요법, 방사선요법, 레이저치료, 저온수술과 물 리적인 치료방법인 국부완화제, 코티손 주입, 탄력압박붕대, 외과교정술, 또는 마사지, 초음파 등 여러 가지 치료술이 이용되고 있지만 대부분의 방법이 재발률이 높으며, 비용이 많이 들고, 복합적인 시술 이 요구되며 치료기간이 장기간 소요되는 단점이 있는 상태이다.

실내시험을 통한 이중필터 PBD 성능평가

안용훈 ( An Yonghoon ),곽태훈 ( Kwak Taehoon ),이철호 ( Lee Chulho ),최항석 ( Choi Hangseok ) 한국구조물진단유지관리공학회 2009 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.13 No.2

In this paper, a newly devised double filter PBD (Prefabric Board Drain) is introduced to show its improved performance compared with the single filter PBDs. The double filter PBD is expected to overcome several disadvantages of the conventional PBDs such as kinking of a PBD frame in a considerable thick soft ground and clogging of filter due to entrapment of fine soil particles. To show the performance of the double filter PBD, a series of laboratory experiments has been performed, which is listed as a torsional ring shear test for measuring interfacial strength between main filter/sacrificial filter and soil/sacrificial filter, the modified Delft test to evaluate the discharge capacity of the PBD, and a large-strain self-weight consolidation test to compare the performance of the conventional and new PBD.

실내시험을 통한 이중필터 PBD 성능평가

안용훈(An, Yonghoon),곽태훈(Kwak, Taehoon),이철호(Lee, Chulho),최항석(Choi, Hangseok) 한국구조물진단유지관리학회 2009 한국구조물진단학회 학술발표회논문집 Vol.2009 No.2

In this paper, a newly devised double filter PBD (Prefabric Board Drain) is introduced to show its improved performance compared with the single filter PBDs. The double filter PBD is expected to overcome several disadvantages of the conventional PBDs such as kinking of a PBD frame in a considerable thick soft ground and clogging of filter due to entrapment of fine soil particles. To show the performance of the double filter PBD, a series of laboratory experiments has been performed, which is listed as a torsional ring shear test for measuring interfacial strength between main filter/sacrificial filter and soil/sacrificial filter, the modified Delft test to evaluate the discharge capacity of the PBD, and a large-strain self-weight consolidation test to compare the performance of the conventional and new PBD.

택지개발사업의 민영화 논리와 개발유형별 접근방법

안용훈,김혜천 牧園大學校 建築·都市硏究센터 1999 建築·都市環境硏究 Vol.7 No.-

Nowadays, every country tries to make government small and competitive. Under these circumstances, there is a growing need to promote participation of private sectors in providing public goods and services. In spite of the needs for participation of private sector, no distinct role for each sector has been defined yet. Private sector's participation without role definition may cause some negative side effects. In this context, this paper aims to define the scope and limitation of privatization, and to search for desirable roles of each sectors in residential land development policy. To estimate the role and the scope of privatization, 3 estimating factors which contain economic, public, and social aspects, and 7 type of land development types which derived from developing sector, methods, and size are used.

PA42)Low - Z Electron Probe X-ray Microanalysis를 이용한 불균일 NaCl-Na₂SO₄ 입자의 분석

구희준,안용훈,김혜경,노철언 한국대기환경학회 2003 한국대기환경학회 학술대회논문집 Vol.- No.-

도시개발사업의 과제 및 효율적 추진방안 연구

강식,안용훈 경기연구원 2001 경기개발연구원 기본연구 Vol.2001 No.9