Pressure Sensitive Paint의 성능비교 및 경사충돌분류의 압력장 측정

이상익,이상준,Lee, Sang-Ik,Lee, Sang-Joon 대한기계학회 2002 大韓機械學會論文集B Vol.26 No.7

The pressure sensitive paint (PSP) has recently received a considerable attention in the fields of aerodynamics and fluid mechanics as a new revolutionary optical technique to measure pressure fields on a body surface. In this study, the feasibility and effectiveness of the PSP pressure field measurement technique have been investigated experimentally. Seven different PSP formulations including two porphyrins(PtOEP and PtTFPP) and four polymers(Polystyrene, cellulous acetate butyrate, GP-197 and Silicon-708) were tested to check the performance and characteristics of each combination. The static calibration of each PSP formulation was carried out in a constant-pressure chamber. The PSP technique was applied to an oblique impinging jet flow to measure variation of pressure field on the impinging plate at on oblique jet angle of ${\theta}=60^{\circ}$. Pressure field images were captured by an 12bit intensified CCD(ICCD, $1K{\times}1K$)camera. As a result, the dynamic response of PSP depends on the oxygen permeability of polymer and the photochemical interaction between luminophore and polymer as well as the reaction of luminophore itself. The reaction of luminophore was changed by employing different polymers. In conclusion, Among 7 PSP formulation tested, the combination of PtTFPP and cellulous acetate butyrate show the best performance. In addition, the detail pressure field of an oblique high-speed impinging jet was measured effectively using the PSP technique.

최근 일본의 돈육수급 현황과 전망

이상익,Lee, Sang-Ik 대한양돈협회 1988 養豚 Vol.10 No.5

일본의 돈육수급 상황은 소비량의 정체, 해외로 부터 축산물 자유화 요구, 급변하는 구조적 변화에 따라 수요동향에 맞는 계획생산과 기술 개선의 합리화 방안, 가공하기에 적당하다고 균일한 비육돈의 생산이 필요하다

반강결 프레임 구조물의 시스템 신뢰성 해석 - 비닐하우스를 중심으로 -

이상익,이종혁,정영준,김동수,서병훈,서예진,최원,Lee, Sangik,Lee, Jonghyuk,Jeong, Youngjoon,Kim, Dongsu,Seo, Byunghun,Seo, Yejin,Choi, Won 한국농공학회 2022 한국농공학회논문집 Vol.64 No.5

Recently, the trend in structural analysis and design is moving towards the development of reliable system. The reliability-based method defines various limit states related to usability and failure, thereby enabling multiple levels of design according to the importance of a structure. Meanwhile, an actual structure is composed of a set of several elements, and particularly, a frame type is composed of a system in which the members are connected each other. At this time, the actual connection between members is in a semi-rigid condition, not in complete rigid or hinged. This semi-rigid is found in several structures, especially in agricultural facilities designed with lightweight materials. In this study, a system reliability analysis technique for frame structure was established, and applied to an analysis of the semi-rigid connection. Various conditions of correlation were applied to reflect the connectivity between members, and through this, the limitations of existing structural analysis method and the behavioral characteristics of structure were analyzed. The failure probability of the frame member component and the overall structure system was significantly different in consideration of the semi-rigid connection. In addition, it was evaluated that the behavior of structure can be more accurately analyzed if the correlation according to the position of members in a system is further investigated.

S-Aryl Arenethiosulfonate 유도체의 살응애력과 살란력

이상익,금영수,박창규 ( Sang ik Lee,Yuong Soo Kuem,Chang Kyu Park ) 한국응용생명화학회 1997 Applied Biological Chemistry (Appl Biol Chem) Vol.40 No.3

The acaricidal and ovicidal activity against red spider mite (Tetranychus urticae) was examined for a series of S-aryl arenethiosulfonates and compared with sulfonate acaricide, ovex and genite. Substituted diphenyl disulfides were obtained from substituted thiophenols, chloronitrobenzene and aniline derivatives. The S-aryl arenesulfonothioates were synthesised from the oxidation of disulfides. Three kind of para substituted compounds were found to have good ovicidal effect but acaricidal activity against adult mite was negligible in all S-aryl arenethiosulfonates.

전력기술.정보 - 분전반 화재 시뮬레이션 해석

이상익,Lee, Sang-Ik 한국전기기술인협회 2011 電力技術人 Vol.348 No.-

CFD 해석을 통한 후지 사과 CA 저장고 내의 적정 CO₂ 농도 조성 검토

이상익,홍세운,최원,김락우,이인복,Lee, Sang-Ik,Hong, Se-Woon,Choi, Won,Kim, Rack-woo,Lee, In-bok 한국농공학회 2018 한국농공학회논문집 Vol.60 No.3

$CO_2$ concentration has a significant effect on quality of cold-stored apples. High indoor $CO_2$ concentrations above 10,000 ppm cause the browning of apples and result in economic loss for farmers. The purpose of this study is to evaluate $CO_2$ concentrations and their distribution in a controlled atmosphere (CA) storage and provide better structural designs to improve the $CO_2$ environment using computational fluid dynamics (CFD) simulations. The CFD model was developed for a real CA storage for apples and applied to investigate the effect of changing the inlet and outlet locations and the aspect ratio of the floor of the CA storage on the spatial distributions of $CO_2$ concentration and the browning of the apples. The lowest $CO_2$ concentrations in existing CA storage with a high aspect ratio of the floor were achieved from the combination of the inlet located at the top of the right side and the outlet located at the bottom of the left side. In modified CA storage with a low aspect ratio, the combination of the inlet and outlet located at top and bottom of left side respectively achieved the lowest $CO_2$ concentrations. The proposed case enhanced the storage performance by reducing total browned apples by 3.6% in storage duration of 210 days. This study is expected to reduce the browning damages of apples in CA storage, and thus greatly prevent economic losses.

S-Aryl Arenethiosulfonate 유도체의 살응애력과 살란력

이상익,박창규,금영수,Lee, Sang-Ik,Park, Chang-Kyu,Kuem, Yuong-Soo 한국응용생명화학회 1997 Applied Biological Chemistry (Appl Biol Chem) Vol.43 No.2

19종의 S-Aryl arenethiosulfonate 유도체를 합성하여 살응애력 및 살란력을 검정하였다. 치환 thiophenol, chloronitrobenzene, 치환 aniline 등으로부터 합성된 diphenyl disulfide 유도체와 m-choroperoxybenzoic acid 와의 산화반응을 통하여 목적화합물을 얻었다. 점박이응애(Tetranychus urticae) 성충 및 알에 대한 유도체들의 살충 효과를 검정한 결과, 3종의 para 치환체가 50% 이상의 강한 살란효과를 나타냈으나 성충에 대하여는 호과가 없었다. Ovex, genite등의 살응애력을 지닌 sulfonate계 화합물이 meta 또는 para chloro 치환체인 반면에 thiosulfonate계 화합물의 meta또는 para-choro 치환체는 활성이 없었다. The acaricidal and ovicidal activity against red spider mite (Tetranychus urticae) was examined for a series of S-aryl arenethiosulfonates and compared with sulfonate acaricide, ovex and senile. Substituted diphenyl disulfides were obtained from substituted thiophenols, chloronitrobenzene and aniline derivatives. The S-aryl arenesulfonothioates were synthesised from the oxidation of disulfides. Three kind of para substituted compounds were found to have good ovicidal effect but acaricidal activity against adult mite was negligible in all S-aryl arenethiosulfonates.

3003 알루미늄 합금판재의 성형성에 관한 연구

김수성(Soo Seong Kim),이상익(Sang Ik Lee),김철환(Chul Whan Kim) 대한금속재료학회(구 대한금속학회) 1986 대한금속·재료학회지 Vol.24 No.2

The formability of 0.4mm and 0.6mm thick Al alloy 3003 sheet that had been double cold rolled and annealed was evaluated by analyzing its uniaxial tensile behavior, forming limit curve (F.L.C.), pole figure analysis, and earing behavior. The F.L.C. level of Al alloy 3003 sheet was considerably lower than those of the low carbon steels (Keeler-Goodwin Band). As the thickness of sheet increased, the F.L.C. level of Al alloy 3003 sheet became higher. The experimental strain ratio (R-value) was compared well with the theoretical R-value calculated by the Lee-Oh method, and the cup made an earing in the direction of the high R-value. It was found that the earing height decreased when the mixture of rolling and annealing textures developed.

一般論文 : 공주세거경주이문(公州世居慶州李門)의 학문(學問)과 사상(思想)

이상익 ( Sang Ik Lee ) 영산대학교 동양문화연구원 2009 동양문화연구 Vol.4 No.-

公州에 世居하는 慶州李門의 家學은 石灘李存吾와 草廬李惟泰, 그리고 醒菴李喆榮으로 대표된다. 고려말기의 文臣石灘은 <論辛旽疏>를 통해 妖僧辛旽의 횡포를 탄핵하고 君·臣의 名分을 밝혔거니와, 이는 ``綱常을 밝히는 正言``이요, ``衷情에서 우러난 直言``이었던 것이다. 조선 중기의 山林草廬는 經學과 禮學에 밝았으며, 특히 時務에 밝았다. 초려의 『四書答問』은 당시 기호학파의 經學을 대표하는 것이며, 『禮辨』은 宗法의 원리를 天下의 同禮로 재확인한 것이다. 한편 <己亥封事>는 국정 전반에 걸친 포괄적 개혁안을 제시함으로써, 당시에 추진되었던 북벌을 뒷받침하고자 했던 것이다. 조선 말기의 學者醒菴은 日帝에 굽히지 않는 節義와 性理를 밝히는 學問으로 이름을 남겼다. 성암의 節義는 단순히 日帝에 항거한 것이 아니요, 日帝에게 人道와 交隣의 義理를 깨우친 것이다. 한편 성암의 性理學은 당시까지 2백여년을 지속해오던 湖洛論爭을 종식시킬 수 있는 토대를 마련한 것이다. Major scholars of the family school of Lee de Kyungjoo long lived at Gongjoo are Lee Jono, Lee Yutae and Lee Chulyoung. Le Jono was a literati bureaucrat of the later Korea dynasty. By impeachment of Sindon, a wicked Buddhist monk, he made straight the court rank of king and bureaucrat, which has been evaluated as a right and loyal action for a long time. Lee Yutae was a moral philosopher of the middle Chosun dynasty being good at both Confucius Classics and Ethics and especially good at current political affairs. Lee Chulyoung was famous as a scholar resistant against Japanese colonial rule of Korea. Their scholarships and integrities must be sufficient to represent Gongjoo and furthermore Korea also.

일반논문 : 하서금인후(河西金麟厚)의 행적(行蹟)과 후세의 평가

이상익 ( Sang Ik Lee ) 영산대학교 동양문화연구원 2011 동양문화연구 Vol.7 No.-

河西金麟厚는 일찍부터 學問에 뜻을 두었고, 經世濟民의 의지도 충만했었으며, 그를 뒷받침할 만한 資質도 충분했었다. 그런데 하서가 한참 자신의 포부를 실현할 수 있을 만한 때에 자신이 기대를 걸었던 仁宗이 갑자기 승하했고, 時局은 매우 근심스럽게 전개되었다. 이에 하서는 仕宦의 길을 접고 낙향하여 詩와 술에 의탁하여 때를 기다렸던 것이다. 하서에 대한 후세의 평가는 ‘道學과 節義와 文章을 겸비했다’는 것이요, ‘하서처럼 세 가지를 모두 겸비한 인물은 매우 드물었다’는 것으로 대변된다. 사실 하서는 ``우리나라 4백년의 第一人物’이라고 칭송될정도로 극도로 추숭되었으며, 그리하여 마침내 ``文廟配享’이라는 영광을 누리게 된 것이다. 그러나 하서의 ``儒學史的位相’은 靜菴이나 退溪·栗谷등에 미치지 못하는 것 같다. 靜菴은 殉節했고, 退溪와 栗谷은 많은 논설을 남기면서 학문적 議題를 주도했고 門下에 많은 걸출한 제자들을 배출하기도 했다. 그런데 하서는 많은 논설을 남기지 못했으며, 門下에서도 걸출한 제자가 많이 나오지는 못한 것 같다. 그리하여 하서에 대한‘후세의 평가’와 하서의 ‘유학사적 위상’ 사이에는 약간의 간극이 생긴것이라 하겠다. Posterity appraises Kim Inhoo for his virtue, integrity and literary talent. There were very few who combines three kinds of excellence. That``s why he was praised as the leading figure in the literati world of Chosun dynasty for 400 years. Finally, he took the honor to be placed in the Korean Confucian shrine. However, his status in the Korean Confucian history is not so firm as those of Cho Jungam, Lee Hwang and Lee Yi. Cho Jungam died for his chastity. Lee Hwang and Lee Yi left many philosophical works. They all have lots of excellent followers. In contrast, Kim Inhoo did have not so many philosophical works and excellent followers. He left only his fame as a perfect man. There is a not so narrow gap between posterity`s appraisal for him and his historical status.