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벼에 대한 Ethylene의 생리작용에 관한 연구 제 7 보. 벼의 Ethylene 생성량 및 생합성의 품종간 차이
이문희,Moon-Hee Lee,Yasuo, Ota 한국작물학회 1985 Korean journal of crop science Vol.30 No.3
특성이 다른 품종의 유묘기 에칠렌 생성량 및 함량의 차이를 구명하고, 또 메치오닌과 ACC 처리에 의한 에칠렌 생성량의 품종간 차이를 검토하여 다음과 같은 결과를 얻었다. 1. 일본형, 품종군은 인도형 품종군 및 인·일교잡 품종군 보다 에칠렌 생성량이 많았다. 2. 에칠렌 생성량이 많은 일본형 품종군은 유아가 짧고 유근이 길었으나, 에칠렌 생성량이 적은 인도형 및 인·일교잡 품종군은 유아가 길고 유근은 짧았다. 3. 유묘의 ACC함량은 에칠렌 생성량이 많은 품종에서 많았다. 4. 유묘에 메치오닌 및 ACC를 처리하면 에칠렌 생성량은 증가하나 그 증가정도는 일본형품종이 인도형 및 인·일교잡품종보다 현저하게 많았다. To know the varietal differences of ethylene evolution, 55 rice varieties were tested at seedling stage. And, also, 6 rice varieties were tested the biosynthesis of ethylene production. The group of japonica varieties produced higher amount of ethylene than the indica and indica x japonica crossed varieties. The content of ACC in rice seedlings of japonica varieties was higher than in seedlings of indica and indica x japonica varieties. And, also, the conversion rate of mathionine and ACC to ethylene in seedling of japonica varieties was higher than in seedling of indica and indica x japonica varieties.
전남 농공단지 폐수처리장 방류수의 화학적/생물학적 독성평가
이문희,최익창,한상국,Lee, Moon-Hee,Choi, Ik-Chang,Han, Sang-Kuk 해양환경안전학회 2008 海洋環境安全學會誌 Vol.14 No.4
본 연구는 영산강유역 농공폐수처리장 방류수중의 유기오염물질 분포를 관찰하였다. 시료채취 지점은 영산강 유역에 존재하는 4지점의 농공단지 폐수처리장을 선정하였다. 본 연구에서 GC-Ion trap MS로 300종의 일반적인 화학물질을 ppt수준에서 검출할 수 있는 방법을 이용하여 분석하였다. 농공폐수처리방류수에서 검출된 주요 유기오염물질은 농약류, CH구조의 방향족, CHO구조의 프탈레이트류, 그리고 CHO(N) 구조의 아로메틱 아민류였다. 또한 diethylphthalate를 포함한 17종의 내분비계장애물질이 검출되었다. XTT assay를 이용한 세포독성 결과는 TV로 나타냈으며, 그들의 세포독성은 A지점에서 27.2, D지점에서 24.4로 가장 높게 나타났다. 한편 화학적 분석 결과와 생물학적 독성도와는 일치하지 않는 것으로 나타났다. The purpose of this study is to investigate the distributive property of organic pollutants in effluents of argo/industrial wastewater treatment plants in Jeonnam using simultaneous analysis method of 310 chemicals. The numerous organic pollutants were detected in four sampling sites and the major chemicals were pesticides, CH type chemicals such as polycyclic compounds, CHO type chemicals such as phthalates, and CHO(N) type chemical such as aromatic amines. Moreover, 17 kinds of endocrine disrupters which include diethylptbalate were detected in each sampling sites. TU (Toxic unit) indicated cytotoxicity of samples using XTT assay, it appeared highly at A point(27.2) and D point(24.4). Also, the results from the correlation between total concentration of pollutants and TU did not correspond to the results of chemical and biological analysis.
한약재 단일 추출물 및 복합 추출물을 이용한 아토피성 피부염 억제 효과
이문희(Moon Hee Lee),한민호(Min Ho Han),윤정재(Jung Jeh Yoon),송명규(Myung Kyu Song),김민주(Min Ju Kim),홍수현(Su Hyun Hong),최병태(Byung Tae Choi),김병우(Byung Woo Kim),황혜진(Hye Jin Hwang),최영현(Yung Hyun Choi) 한국생명과학회 2014 생명과학회지 Vol.24 No.8
본 연구에서는 1-chloro-2,4-dinitrobenzene (DNCB)에 의해 유도된 아토피성 피부염 마우스 모델에서 고삼, 감초 및 백선피 추출물과 그들 복합 추출물(GGB)의 항아토피 효능을 평가하였다. 아토피성 피부염의 병리학적 형태인 홍반, 귀부종, 부종, 각질과 상처는 복합 추출물 중 고삼, 감초 및 백선피 추출물이 3:1:1로 혼합된 GGB-1 처리군에서 다른 시료 처리군들에 비하여 유의적인 억제 효능을 나타내었다. 또한 면역 기관인 비장의 무게도 GGB-1 처리군에서 감소하였고, 간의 무게는 정상군과 시료 처리군의 값이 유사한 결과를 나타내었다. 아울러 GGB-1 처리군에서 비만 세포의 침윤이 감소되었으며, 혈청 중 IgE의 농도 역시 GGB-1 처리군에서 가장 낮은 값을 보였다. 비록 단일 한약재와 그들의 혼합물 처리군에서는 면역 사이토카인(IFN-γ, IL- 1, 4, 5, 6, 13, 1β and TNF-α)의 값이 유의적으로 감소되었으나, 여러 가지 결과들을 종합하여 볼 때 고삼, 감초 및 백선피 추출물이 3:1:1로 혼합된 복합추출물인 GGB-1이 아토피성 피부염의 개선에 효과적인 약물로 판단된다. The present study was designed to investigate whether ethanol extracts of Sophora flavescens (GS), Glycyrrhiza uralensis (GC), Dictamnus dasycarpus (BSP), and their mixtures (GGB-1, -2, -3, and -4) inhibit 1-chloro-2,4-dinitrobenzene (DNCB)-induced atopic dermatitis (AD) in a mouse model. DNCB was topically applied on the dorsal surface of Balb/c mice to induce AD-like skin lesions. The pathological phenotypes of AD, such as erythema, ear thickness, edema, scabs, and discharge, were significantly decreased in the GGB (DNCB + GS:GC:BSP = 3:1:1 mixture)-1-treated groups compared with the other treated groups. The weight of the spleen in immune organs was significantly decreased in the GGB-1-treated groups, whereas the weight of the liver in a control group was similar to that of the groups treated with the samples. Furthermore, toluidine blue staining analysis, a method used to specifically identify mast cells, showed that master cell infiltration into the dermis of the GGB-1-treated group was significantly decreased. The immunoglobulin E concentration was lower in the GGB-1-treated group. In addition, the levels of inflammatory cytokines (interferon-γ, interleukin-1, 4, 5, 6, and 13, 1β, and tumor necrosis factor-α) were also significantly reduced in the GGB-1-treated group. Taken together, these results suggest that a mixture of GS, GC, and BSP in a proportion of 3:1:1 (GGB-1) may contribute to the relief of AD symptoms and may be considered an excellent candidate for an AD therapeutic drug.
액상소결 SiCf/SiC 복합재료의 미세조직 및 강도특성
이문희(Moon Hee Lee),조경서(Kyung Seo Cho),이상필(Sang Pill Lee),이진경(Jin Kyung Lee) 대한기계학회 2008 대한기계학회 춘추학술대회 Vol.2008 No.11
The efficiency of fiber reinforced CMC(ceramic matrix composite) on the SiC materials have been investigated, in conjunction with the fabrication process by liquid phase sintering and the characterization. LPS-SiC<SUB>f</SUB>/SiC composites was studied with the detailed analysis such as the microstructure, sintered density, flexural strength and fracture behavior. The applicability of carbon interfacial layer has been also investigated in the LPS process. Submicron SiC powder with the constant total amount and composition ratio of Al₂O₃, Y₂O₃ as sintering additives was used in order to promote the performance of the SiC matrix material. LPS-SiC<SUB>f</SUB>/SiC composites were fabricated with hot press under the sintering temperature and applied pressure of 1820℃ and 20㎫ for 1hr. The typical property of monolithic LPS-SiC materials was compared with LPS-SiC<SUB>f</SUB>/SiC composites.
이문희(Moon Hee Lee),홍성표(Sung Pyo Hong),현인규(In Gyu Hyun),이진(Jin Lee),손주현(Joo Hyun Sohn),곽상택(Sang Taek Kwak),주상언(Sang Aun Joo),김이수(Lee Su Kim),최원진(Won Jin Choi),최철순(Choi Chul Soon) 대한소화기학회 1994 대한소화기학회지 Vol.26 No.1
Benign and malignant tumors are rarely encountered in the small intestine. Moreover small bowel metastases arising from the lung carcinoma are very unusual. Previous studies reported that the most common metastatic site of lung carcinoma was the esophagus and the most common histologic type was the squarnous cell carcinoma type. This case was duodenal and jejunal metastases from squamous cell carcinoma of the lung. The patient in this case com- plained of hematemesis and presence of movable mass in the lower left abdomen. N odular ul- cerative mass on the duodenal bulb was found by duodenoscopy, and an endoscopic biopsy re- vealed squamous cell carcinoma. A bronchoscopic biopsy determined squamous cell carcinoma of the lung. Abdominal exploration confirmed multiple metastases on duodenum, two sites of jejunum and Douglas pouch. So we report the case of multiple small bowel metastases from primary squamous lung carcinoma. (Korean J Gastronterol 1994; 26: 191 196)
5G 이동통신용 시퀀셜 급전 밀리미터파 패치 배열안테나 설계
이문희(Moon-Hee Lee),이주호(Joo-Ho Lee),손태호(Taeho Son) 한국전자파학회 2020 한국전자파학회논문지 Vol.31 No.9
본 논문에서는 28 GHz 대역 5G 이동통신 소형 기지국용 8×8 패치 배열안테나를 설계하고, 이를 제작하였다. 축비대역 폭이 넓은 우회전원편파(RHCP)특성을 얻기 위하여 2×2 기본 배열소자에 시퀀셜 급전하였다. PTFE 기판에 제작한 안테나를 측정한 결과, 반사계수 −10 dB 기준으로 2.02 GHz(7.25 %BW) 주파수대역폭을 가진다. 측정 축비는 0도에서 2.71 dB의 특성을, 축비대역폭은 3 dB 기준으로 1.18 GHz(4.24 %BW)의 대역폭을 보였다. 안테나의 이득은 중심주파수 28 GHz에서 15.9 dBic(x-z면), 15.06 dBic(y-z면)로 측정되었다. In this study, an 8×8 patch array antenna for a 28-GHz-band 5G mobile communication small base station was designed and implemented. To increase the right-hand circular polarization axial ratio(AR) bandwidth, a 2×2 subarray element was set to a sequential feed. Measurement results for the implemented antenna on a polytetrafluoroethylene substrate show a frequency bandwidth of 2.02 GHz(7.246 %BW) based on a reflection coefficient of −10 dB. The measured AR at 0° was 2.71 dB, while the 3-dB AR bandwidth was 1.18 GHz(4.24 %BW). The gains of the antenna were measured to be 15.9 dBic(x-z plane) and 15.06 dBic(y-z plane) at a center frequency of 28 GHz.
안전한 음용수 보호 및 보존을 위한 역류 방지 밸브 종류
이문희(Moon Hee Lee),김영철(Young Chul Kim) 대한설비공학회 2019 대한설비공학회 학술발표대회논문집 Vol.2019 No.-
The purpose of this study is to provide an understanding of how far-reaching and critical backflow contamination problems are and to urge the development of the most effective backflow prevention programs possible. To illustrate this, we have compiled a number of case histories - true accounts of hazardous, even fatal, situations when ineffective backflow prevention techniques were employed. In addition, we would like to introduce various kinds of backflow prevention valves depending on the degree of risk.
통합 시운전 복합밸브 구성과 냉난방 6-way valve 소개
이문희(Moon Hee Lee),윤병택(Byung Taek Yoon),양경삼(Kyung Sam Yang) 대한설비공학회 2017 대한설비공학회 학술발표대회논문집 Vol.2017 No.6
This study aimed to compare practically design optimization on cooling and heating hydronic system by application of unique and innovative flow control valve. Total commissioning kit of PICV shows good advantage of component dealing and maintenance with assembling PICV, drain kit, air vent and flow measuring port by one kit. It gives also easy and high cost saving by view point of installation. 6-way cooling and heating reversing system was introduced to make good design optimization as operating cooling and heating system on fan coil unit. It gives cost saving and easy control during reversing or direct cooling hand heating operation. This study shows visible comparison conventional to innovative approach for hydronic system.