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카드뮴 독성으로 손상된 NIH 3T3 섬유모세포에 대한 어성초 추출물의 재생효과(VII)
이정호,오현주,정승일,천현자,한두석,이현옥,안종웅,이미희,백승화,Lee Jeong-Ho,Oh Hyun-Ju,Jeong Seung-Il,Chun Hyun-Ja,Han Do-Seok,Lee Hyun-Ok,Ahn Jong-Woong,Lee Mee-Hee,Baek Seung-Hwa 대한예방한의학회 2001 대한예방한의학회지 Vol.5 No.2
This study was carried out to evaluate antitoxic effects of Houttuynia cordata extract on cadmium by colorimetric methods. The antitoxic activity ofc in NIH 3T3 fibroblasts was evaluated by MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-2H-tetrazolium bromide) and SRB (sulforhodamine B protein) assays. The light microscopic study was carried out to observe morphological changes of the treated cells. The concentration of 10-2 mg/ml of Houttuynia cordata extract was shown significant antitoxic activity. The number of NIH 3T3 fibroblasts were antitoxic and tend to regenerate. These results suggest that the ethyl acetate extract of Houttuynia cordata retains a potential antitoxic activity.
어성초 메탄올 추출물이 흰쥐 장기내 카드뮴 축적에 미치는 영향 (III)
이정호,유일수,김신기,이기남,정재열,한종민,정명수,이은경,백승화,Lee Jeong-Ho,You Il-Soo,Kim Shin-Kee,Lee Ki-Nam,Jeung Jae-Yeal,Han Jong-Min,Chong Myong-Soo,Lee Eun-Kyoung,Baek Seung-Hwa 대한예방한의학회 2000 대한예방한의학회지 Vol.4 No.1
This study was conducted to investigate the antitoxic component in methanol extract of Houttuynia cordata $T_{HUNB}$. The results were as follows: Generally, detoxication effects by Houttuynia cordata $T_{HUNB}$ methanol extract increased in proportion to the methanol extract concentrations. When 40 mg/kg dosage of Houttuynia cordata $T_{HUNB}$ methanol extract was administrated, it showed the highest antitoxic effects in metallothionein induction. After the methanol extract treatment. Body weights increased in proportion to methanol extract concentrations. However, after 3 weeks, the body weight decreased insignificantly. From the above results, these results suggest that the methanol extract of Houttuynia cordata $T_{HUNB}$ increased metallothionein concentration and decreased the toxicity of cadmium in rats.
면니트의 CPB 염색에서 NNMF 알고리즘을 이용한 새로운 컬러처방 예측 기법
이정호,이인열,조성훈,조현태,Lee, Jung Ho,Lee, In Yeol,Cho, Seong Hun,Cho, Hyeon Tae 한국섬유공학회 2013 한국섬유공학회지 Vol.50 No.1
To ensure the reproducibility of the dyeing of cotton knit by cold pad batch(CPB), the solubility, alkali stability and substantivity of multi functional type reactive dyes were tested. The color difference of the cotton knit CPB dyeing products between laboratory and dye house was measured. The results showed that the equipments, dyes and fabrics, all of them influenced the color differences of the final samples between the laboratory and dye house. These factors could not be controlled to reduce the color difference between the laboratory and dye house in the conventional computer color matching algorithm. A new color match prediction method based on the non-negative matrix factorization(NNMF) algorithm was introduced and the applicability was studied by comparing with the conventional color match prediction method based on the Newton-Lapson algorithm. The color match prediction method based on the NNMF showed more accurate recipe prediction results than the conventional color matching method for the CPB dyeing process of cotton knit fabric.
Vernier 신호 분석에서 자기상관함수 기반의 후처리를 이용한 주파수선 음향징표 특징 강화
이정호,배건성,Lee, Jungho,Bae, Keunsung 한국정보통신학회 2013 한국정보통신학회논문지 Vol.17 No.3
본 연구에서는 수동소나 신호의 분석에서 얻어지는 토널 성분, 즉, 주파수선의 하모닉 성분을 강화하는 새로운 방법을 제안하였다. 제안한 방법에서는, 먼저 스펙트럼의 일정 시간에 따른 주파수 빈별 평균값을 구하고, 평균값과의 차이를 이용하여 안정적인 주파수선과 불안정한 주파수선을 구별한다. 그런 다음 불안정한 주파수선에 자기상관함수와 S2PM을 적용하여 배경잡음을 줄이고 하모닉 성분을 강조하게 된다. 실제 어선에서 획득한 수중음향 데이터를 이용한 실험 결과를 분석하였고, 이를 통해 제안한 방법의 타당성을 검증하였다. In this paper, we propose a novel method to enhance the harmonic components from the frequency lines of the passive sonar signals. For this, we first separate the stable frequency lines from unstable ones using mean and difference of spectral bins in the vernier analysis. Then we emphasize the harmonic components using autocorrelation-based postprocessing, and enhance them by reducing the background noise with the split-window two pass mean algorithm. Experimental results for real underwater acoustic data are presented with our discussions.
이정호,Lee, Jeong-Ho 한국도서관협회 1969 圖協月報 Vol.10 No.7
이 글은 1969.8.27~28. 양일간 국방대학원 도서관에서 개최될 특수도서관대회에서 발표되는 주제논문을 입수하여 게재한 것임.
어성초 전탕액이 흰쥐 장기내 카드뮴 축적에 미치는 영향(I)
이정호,강길웅,정재열,한종민,이기남,정우영,한두석,유일수,김종수,백승화,Lee Jeong-Ho,Kang Kil-Ung,Jeung Jae-Yeal,Han Jong-Min,Lee Ki-Nam,Chung Woo-Young,Han Du-Seok,You Il-Soo,Kim Jong-Soo,Baek Seung-Hwa 대한예방한의학회 1999 대한예방한의학회지 Vol.3 No.2
This study was conducted to investigate the antitoxic component in aqueous extract of Houttuynia cordata $T_{HUNB}$. The results were as follows: Generally, detoxication effects by Houttuynia cordata $T_{HUNB}$ extract increased in proportion to the extract concentrations. When 40mg/kg dosage of Houttuynia cordata $T_{HUNB}$ extract was administered, it showed the highest antitoxic effects in metallothionein induction. After the extract treatment, body weights increased in proportion to the extract concentration. However, after 3 weeks, the body weight decreased insignificantly. From the above results, Houttuynia cordata $T_{HUNB}$ extract increased metallothionein concentration and decreased the toxicity of cadmium in rats. 흰쥐에게 카드뮴 경구투여시, 어성초 전탕액의 경구 투여한 후 카드뮴의 독성에 대한 해독경감효과에 대하여 다음과 같은 결과를 얻었다. 1. 흰쥐에게 어성초 전탕액의 경구 투여 용량이 증가할수록 카드뮴의 독성에 대한 해독경감효과는 증가하였으며, 신장에서보다 간장에서 해독경감효과가 좋았다. 2. 흰쥐 신장 및 간장의 MT의 농도는 간장에서 보다 신장에서 우수한 결과를 보였으며, 신장에서는 어성초 전탕액의 경구 투여 농도가 10mg/kg 이상이 되면 MT 형성은 어성초 전탕액의 투여 농도가 증가하여도 크게 증가하지는 않았다. 3. 흰쥐의 체중변화는 어성초 전탕액의 경구 투여 용량이 증가할수록 흰쥐의 체중변화도 증가하는 경향을 보였으나, 3주 이후에는 체중의 증가가 적게 나타났다. 이상과 같이 어성초 전탕액의 경구투여를 종합해 보면, 어성초 전탕액의 경구 투여 시켰을 경우 카드뮴의 독성에 대한 해독경감효과가 있는 것으로 판단된다.