무절점 인장응력 조건의 적용이 가능한 구속형 구조물 균열 거동 대응 성능 시험 장치 개발

안현호 ( An¸ Hyun-ho ),최영현 ( Choi¸ Young-hyun ),박완구 ( Park¸ Wan-goo ),김영근 ( Kim¸ Young-keun ),오상근 ( Oh¸ Sang-keun ),최수영 ( Choi¸ Su-young ) 한국건축시공학회 2021 한국건축시공학회 학술발표대회 논문집 Vol.21 No.2

The existing evaluation method could not apply the effect of zero span tension generated in the waterproofing layer attached to the surface of the structure at the moment of cracking as the waterproofing layer was constructed in the state where the cracks were formed. The test apparatus developed through this study is expected to be able to conduct tests closer to the environment occurring in actual structures as it is possible to simultaneously create a pressurized (constrained) condition and an environment for zero span tension.

비 카세트 방식과 카세트 방식을 이용한 [⁶⁸Ga]PSMA-11의 자동 합성 방법 비교

박현식,조병민,안현호,이홍진,이진형,이경재,이병철,이원우,Hyun-Sik, Park,Byeong-Min, Jo,Hyun-Ho, An,Hong-Jin, Lee,Jin-Hyeong, Lee,Gyeong-Jae, Lee,Byung-Chul, Lee,Won-Woo, Lee 대한핵의학기술학회 2022 핵의학 기술 Vol.26 No.2

Purpose [⁶⁸Ga]PSMA-11 is needed the high reproducibility, excellent radiochemical yield and purity. In term of radiation safety, the radiation exposure of operator for its production also should be considered. In this work, we performed a comparative study for the fully automated synthesis of [⁶⁸Ga]PSMA-11 between non-cassette type and cassette type. Materials and Methods Two different type of modules (TRACERlab FX N pro for non-cassette type and BIKBox for cassette type) were used for the automated production of [⁶⁸Ga]PSMA-11. According to the previously identified elution profile, Only 2.5 ml with high radioactivity was used for the reaction. After adjusting the pH of the reaction solution with HEPES buffer solution, the precursor was added and reacted with at 95 ℃ for 15 minutes. The reaction mixture was separated and purified using a C18 light cartridge. The product was eluted with 50% EtOH/saline solution and diluted with saline. It was completed by sterilizing filter. In the non-cassette type, the aforementioned process must be prepared directly. However, in the cassette method, synthesis was possible simply by installing a kit that was already completed. Results Both total [⁶⁸Ga]PSMA-11 production time were 25±3(non-cassette type) and 23±3 minutes(cassette type). The radiochemical yield of the non-cassette type(65.5±5.7%) was higher than that of the cassette type(61.6±4.8%) after sterilization filter. The non-cassette type took about 120 minutes of preparation time before synthesis due to washing of synthesizer and reagent preparation. However, since the cassette type does not require washing and reagent preparation, it took about 20 minutes to prepare before synthesis. Both type of synthesizer had a radiochemical high purity(>99%). Conclusion The non-cassette type production of [⁶⁸Ga]PSMA-11 showed higher radiochemical yield and lower cost than the cassette type. However, The cassette type has an advantage in terms of preparation time, convenience, and equipment maintenance.

비경화 방수재의 한·중 공동품질기준 마련 및 성능개선 연구

최수영 ( Choi Su-young ),안현호 ( An Hyun-ho ),최영현 ( Choi Young Hyun ),박완구 ( Park Wan-goo ),김동범 ( Kim Dong-bum ),오상근 ( Oh Sang-keun ) 한국건축시공학회 2019 한국건축시공학회 학술발표대회 논문집 Vol.19 No.2

The purpose of this study was to develop a technology to prevent leakage of construction structures for the Chinese market. The first key development factor is to establish a joint quality standard that corresponds to all performance criteria set out in Chinese Standard JC / T 2428-2017. The second key development factor is to develop a product capable of exhibiting performance in a low temperature environment of -30 ℃ and coping with 15mm structure behavior.

한·일 국제 여객터미널 공공디자인에 대한 인식평가

박재덕 ( Park Jae-ho ),안현호 ( An Hyun-ho ),윤지영 ( Yoon Ji-young ) 한국디자인트렌드학회 2010 한국디자인포럼 Vol.29 No.-

본 연구는 공적공간으로서 부산여객터미널의 공공시설물의 현황을 살펴보고, 지역적 아이덴티티를 갖춘 공공디자인 설계를 위한 기초 정보를 제공하기 위해 부산의 관문인 부산여객터미널과 후쿠오카의 하카타국제터미널의 내·외부 공간 및 공공디자인에 대한 인식평가를 실시하였다. 그 결과, 부산여객터미널의 경우, 부산여객터미널 내의 공공디자인은 지역·문화성과 관련하여 공간의 정체성을 명확하게 확립하는 구성요소로서의 디자인이 부재한 상태이며, 기능성 및 심미성 부분에서는 정보전달 및 쾌적성과 관련된 시설의 개선이 필요한 것으로 조사되었다. 하카타국제터미널에 대한 한국인의 평가는 안내, 청결도, 휴식공간, 관광지도 등과 관련된 문항에서 높게 나타났으나, 일본인은 안내, 통일성, 역사·문화, 기대감 등과 관련하여 자국 터미널에 대한 부정적 인식이 높았다. 결론적으로, 부산여객터미널 내의 공공디자인은 지역·문화성과 관련하여 공간의 정체성을 명확하게 확립하는 구성요소로서 디자인이 부재한 상태이며, 기능성 및 심미성 부분에서는 정보전달 및 쾌적성과 관련된 시설의 개선이 필요하다. 본 연구에서 제시하는 공공디자인 평가가 향후, 국제도시의 관문으로서 여객터미널의 공간아이덴티티 확립 및 공공디자인 개발에 유용한 정보로 제공될 수 있기를 기대한다. This study aims at exploring the public design of Hakata and Busan Passenger terminal and the evaluation of the space. This evaluation includes functional, aesthetic and cultural satisfaction level of each place and the findings were analyzed in terms of cultural difference. 30 Korean and 30 Japanese monitors were chosen to experience the terminal space and evaluate the questionnaire which was developed by USI of Kyushu university for evaluation of public space. For the Busan Passenger terminal, Japanese satisfied only 40% space of coherency and 53.3% in expression of regionalism and culture while Koreans gave negative evaluations of that. Also, Koreans gave high evaluations in guidance, cleanliness, rest space and tourist map of the Hakata international terminal. However, Japanese seemed to be less satisfied than Korean with most of the items including guidance, expression of history and regionalism. This study suggests that Busan passenger terminal requires better guiding sign system in functional aspect and clean atmosphere with identity design reflecting Busan culture to increae the satisfaciton level of the users and to regenerate the tour industry of Busan.

국제여객터미널의 공공공간에 관한 평가 및 인식에 관한 연구 : 부산여객터미널과 하카타국제터미널의 한 · 일간 비교연구

박재덕(Park Jae-Duck),안현호(An Hyun-Ho) 한국디자인학회 2009 한국디자인학회 학술발표대회 논문집 Vol.2009 No.5

흙-직포간의 접촉면 전단강도 산정

윤주문(Youn Choo-Moon),안현호(An Hyun-Ho),서병욱(Seo Byoung-Wook),이석원(Lee Seok-Won) 한국토목섬유학회 2006 한국지반신소재학회 논문집 Vol.5 No.3

흙 자체의 전단강도와 흙과 직포사이의 접촉면 전단강도를 산정하기 위해서 본 연구에서는 대형직접전단시험기를 사용하였다. 두 종류의 흙(모래와 점토)과 한 종류의 직포를 실험에서 사용하였다. 본 연구에서는 총 9번의 시험을 수행하였다. 그 결과, 모래 자체는 30°의 내부마찰각을 나타내었다. 직포와 모래의 접촉면 마찰각은 26°로 87%의 효율을 나타내었다. 이와 비슷하게 직포와 점토의 접촉면 마찰각은 7.7°를 나타내었다. Large-scale direct shear tests were conducted in order to evaluate both the shear strength of soil itself and the interface shear strength between soil and woven geotextile. Two types of soil (sand and clay) with a woven geotextile were used in the experimental program. Total nine tests were conducted in this study. It has been found from the experimental results that the friction angle of sand itself were 30°. Interface friction angle between woven geotextile and sand showed 26° indicating an efficiency of 87%. Similarly, interface friction angle between woven geotextile and clay showed 7.7°.

쇄석-지오텍스타일간의 접촉면 전단강도 산정

이석원(Lee Seok-Won),윤주문(Youn Choo-Moon),안현호(An Hyun-Ho),서병욱(Seo Byoung-Wook) 한국토목섬유학회 2006 한국지반신소재학회 논문집 Vol.5 No.1

쇄석의 전단강도와 쇄석과 부직포사이의 접촉면 전단강도를 산정하기 위해서 본 연구에서는 대형직접전단시힘기를 사용하였다. 두 개의 서로 다른 쇄석의 단위중량을 한 종류의 직포와 두 종류의 부직포인 총 3가지 형태의 토목섬유에 고려하였다. 본 연구에서는 총 15번의 시험을 수행하였다. 그 결과는 쇄석의 단위중량이 각각 1.4 t/㎥과 1.5 t/㎥일 때 47˚와 57˚익 내부마찰각을 나타내었다. 부직포와 쇄석의 접촉면 마찰각은 쇄석의 내부마찰각에 비하여 A타입에서 39˚로 83%의 효율을 보였으며 B타입은 42˚로 89%의 효율을 나타내었다. 이와 비슷하게 직포와 쇄석의 접촉면 마찰각은 39˚로 83%의 효율을 나타내어 비교적 거칠기가 작은 A타입 부직포와 거의 동일한 결과를 보였다. Large-scale direct shear tests were conducted in order to evaluate both the shear strength of crushed stone itself and the interface shear strength between crushed stone and geotextile. Total three types of geotextile (i.e. one woven geotextile and two nonwoven geotexriles) were used in the experimental program, considering two different values for the unit weight of crushed stone. Total fifteen tests were conducted in this study. It has been found from the experimental results that the friction angles of crushed stone itself were 4r and 5r under the unit weights of crushed stone being 1.4 t/㎥ and 1.5 t/㎥, respectively. Interface friction angle between nonwoven geotextile and crushed stone showed 39˚ for type A indicating an efficiency of 83% and 42˚ for type B indicating an efficiency of 89%. Similarly, interface friction angle between woven geotextile and crushed stone showed 39˚ ndicating an efficiency of 83%.