Water-soluble Genistin Glycoside Isoflavones Upregulate Antioxidant Metallothionein Expression and Scavenge Free Radicals

Chung, Mi-Ja,Kang, Ah-Young,Jun, Hee-Jin,Kim Sang-Yeon,Moon, Tae-Hwa,Park, Kwan-Hwa,Lee, Sung-Joon 생명자원연구 2005 생명자원연구 Vol.13 No.-

다단계 검출알고리즘을 이용한 웨이블렛기반 이미지 워터마킹

이구영,정용덕,이종원,김정화 조선대학교 전자정보통신연구소 2002 電子情報通信硏究所論文誌 Vol.5 No.2

In this paper, we propose a watermarking algorithm of multiresolution watermarking based on wavelet transform for digital images. Watermark insertion is add to pseudo random sequences to the wavelet coefficients at the high and middle frequency band of the discrete wavelet transform. Instead of previous method, proposed multiresolution watermark decoder that allows efficient identification of the embedded a bank of watermarking key without prior notice of it. Proposed detection method aims at ensuring the maximum exactitude in the detection of the owner identification key and, minimizing the number of false positive detection.

旣婚女性의 家庭縫裁 의욕에 관한 조사연구

이부련,박화순,배정숙 대구대학교 (한사대학) 산업기술연구소 1982 産業技術硏究 Vol.2 No.1

This study is to renew social apprecation of desire for home-sewing and to come up with improved solutions by researching women's desire for home-sewing. This study was carried out with 628, 20 question-papers from 800 random-sampled women from May, 20. 1981 till May. 30. 1981. In arrangement of the materials, the test X² was used. The result was a follows: 1. There was a significant difference between social classes and academic careers. 2. In the pleasure of sewing and in the difficulty of clothes-making, there was a meaningful difference between schoolings, home-sites, and social classes. 3. Also in the necessity of pattern-supplying, in the ability of handing machines and in making clothes, there was a sensible distinction between ages, school careers, and social classes. 4. In the direction of the texlure of cloth as well, there was a touchable difference between academic backgrounds, locations of homes, and classes.

演繹과 歸納에 關한 考察

李忠杰,金富允,金東華 釜山大學校 師範大學 1988 교사교육연구 Vol.17 No.-

In this paper, we point out that the knowledge of deduction method being suitable for persuading someone to approve a statement is unsuitable for necessity of deductive reasoning. For such knowledge, the recognition of difference between inductive reasoning and deductive reasoning is required. Such a knowledge is acquired some empirical components and some social components. David Bloor says, theoretical components of knowledge is one aspect of such social components. The atmosphere of classroom, attitude of teacher, attitude of other students are variables of such social components. Students in classroom study the knowledge of inductive method and deductive method with some social components, after this, students recognize the difference between inductive method and deductive method, after all, students recognize the necessity of deductive method for proving a statement.

인터넷 폭주제어 메카니즘의 성능 분석

이병곤,송화선,김주영,정영준 강원대학교 정보통신연구소 2002 정보통신논문지 Vol.6 No.-

The congestion control is one of most important factors to maintain QoS and to provide reliable services in Internet applications. This paper has studied Internet flow controls and discussed the characteristics of proposed congestion control mechanisms. This paper has analyzed their characteristics of the optimum parameters for congestion controls in respect with fairness and service throughput. Also this paper discusses how the offensive UDP traffics produce the performance degradation of TCP traffic services in congestion environment.

高血壓性 腦實質內 血腫

李和東,韓允善,鄭煥永,李憲梓 中央醫學社 1971 中央醫學 Vol.20 No.2

A total of 32 cases of spontaneous intracerebral hematoma caused by hypertension and unknown origin is surgically treated and reviewed. Thirty two cases comprised 22 males and 10 females with a ratio of 2.2 too 1. The age ranged from 30 to 61 years with the highest incidence at 5th and 6th decades. The most important one as to prognosis is the level of consciousness, and the age per se does not influence significantly to the mortality or morbidity. Surgical exploration is better, attempted when the clinical features denote a space occupying lesion.

메조기공의 실리카-티타니아 코겔의 제조와 자율적 조습 및 광촉매 특성

이상화,곽중협,서태수,김효중,김동표 한국공업화학회 2003 공업화학 Vol.14 No.3

수용액상의 졸겔반응에 의해 메조기공의 실리카-티타니아 코겔을 제조하고 이들의 자율적 조습력과 광촉매 특성에 대해 검토하였다. 실리카-티타니아 코겔에 있어 조습력과 관계되는 세공크기와 용적은 본 연구에서 고안된역적정법에 의해 Ph 7부근 및 SiO_2/TiO_2 비가 상대적으로 큰 9/1인 경우에 가장 큰 생성물이 얻어졌다. 폐놀 분해율에 의한 광촉매 특성은 동일조건에서 SiO_2/TiO_2 비가 감소함에 따라 증가하였고, SiO_2/TiO_2 비가 9/1에서 세공크기 4.0~6.0 nm 및 세공용적 0.6~0.8 mL/g 범위로 제어된 코겔의 경우 환경습도 40~70% 범위에서 흡습량 25%, 방습량 45%로서 종래 조습재료 보다 자율조습력이 큰 것을 볼 수 있었고, 같은 조성의 실리카-티타니아 혼합 산화물과의 폐놀 분해율에 의한 광촉매 특성 비교에서도 우수한 물성을 보이고 있었는데 이것은 Ti-O-Si 결합형성으로 인해 코겔 구조내에 음전하 과잉으로 인한 활성점(브렌스테드 산점) 발현에 기인된 것으로 고찰된다. Silica-titania cogel materials have been prepared by aqueous sol-gel process using a back titration technique designed for this study. The humidity self-control and photocatalytic properties of the materials have been also investigated. In these silica-titania cogel materials, relatively large pore size and pore volume than can give a good humidity control ability are desired, and they were synthesized under the reaction condition at pH of 7 and SiO_2/TiO_2 ratio of 9/1. The photocatalytic property, which was measured by the decomposition ratio of phenol, increased with the decrease of SiO_2/TiO_2 ratio in the composition. The cogel at the SiO_2/TiO_2 ratio of 9/1, resulted in the pore size of 4.0~6.0 nm and the pore volume of 0.6~0.8mL/g. At the relative humidity range of 40~70%, the amounts of moisture absorption and desorption were 25% 45%, respectively, and these had a better humidity control ability than conventional ones. In addition, the cogel showed a superior photocatalytic property compared to that of silica and titania mixture with the same composition. This enhancement is probably due to the revelation of active sites by the excess negative charges that were induced by Ti-O-Si bond formation in the cogel structure.

Bacillus sp. MS202에 의한 Dinitroaniline계 제초제인 Pendimethalin의 부분환원

이영근,장화형,장유신,형석원,정혜영 한국환경농학회 2004 한국환경농학회지 Vol.23 No.4

토양과 지하수에서 pendimethalin의 지속성은 환경에 해로운 영향을 미친다. 경남 마산에서 분리한 pendimethalin분해 균주는 API CHB50 kit 시험, FAME 분석, 그리고 165 rDNA 염기서열분석 결과로 Bacillus sp. MS202로 잠정적으로 동정하였다. TLC, GC, 그리고 GC-MS 분석에 의해 Bacillus sp. MS202가 pendimethalin의 -NO₂를 -NH₂로 환원시킨다는 것을 알 수 있었다. 이는 일반적으로 알려진 호기성 미생물에 의한 pendimethalin 분해가 탈알킬화가 우선한다는 보고와 상반되는 새로운 결과이다. The persistence of pendimethalin in soil and ground water has an injurious effect on ecosystem. Pendimethalin-degrading bacterium was isolated from Masan, Gyeongnam province and temporarily identified as Bacillus sp. MS202 by the analysis of API CHB50, kit, FAME, and 16S rDNA sequence. From the analysis of pendimethalin metabolite using TLC, GC, and GC-MS, we found that the degradation of pendimethalin by Bacillus sp. MS202 did not result in the dealkylated form, but the formation of the reduced compound, 6-amino-2-nitro-N(1-ethylpropyl)-3,4-xylidine or 2-amino-6-nitro-N(1-ethylpropyl)-3,4-xylidine.

한국의 기수련이 심장박동간격변화에 미치는 영향

이명수,허화정,김병기,류훈,정현택 한국정신과학학회 1998 韓國精神科學學會誌 Vol.2 No.2

심장박동간격은 최근 교감신경과 부교감신경의 안정을 알아보는 척도로 쓰이고 있다. 본 연구는 4~12개월 천도선법 기수련을 행한 20대의 20명의 기수련자와 동일 연령층의 20명의 일반인을 대상으로 하여 1시간 동안 천도선법을 수행하게 하여 전, 참선, 후의 심장박동을 생리 기록계로 측정을 하여 빠른 퓨리에 변환 (FFT)을 통하여 심장박동간격을 조사하였다. 그 결과 자율신경제의 안정척도인 저주파수 적분 값과 고주파수 적분 값의 비(LF/HF)가 수련전과 수련 중에서 천도선법 기수련생들의 값이 일반인과 비교하여 통계적으로 유의한 차이가 났으며 (p<0. 01) 특히 두 그룹 모두 HF 의 값이 유의하게 변화하는 것을 보았을 때 천도선법 기수련이 부교감신경의 활동을 조절하여 자율신경계를 안정화 시킨다는 것을 보여주었다. The effects of ChunDoSunBup (CDSB) Qi-training on the power spectrum of heart rate variability were studied in 20 healthy subjects and 20 CDSB Qi-trainee (subjects with CDSB Qi-training for 4-12 months) Continuous ECG signals were recorded during 1) 10 min of rest in sitting position, 2) 1 hour of CDSB Qi-training , 3) 10 min of post-training. Fast Fourier transformation was used to determine the power spectrum of heart rate variability While CDSB Qi-training, there were significant decrease in the ratio of low to high frequency power spectrum. And value of pre and mild-training in CDSB Qi-trainees were lower than that of control subjects There was a significant changes in high frequency power of both group, but net in low frequency These results suggest that CDSB Qi-training may stabilize autonomic nervous system by modulate parasympathetic nervous system.

Bacillus lentimorbus WJ5의 감마선유도 돌연변이체들에서 공통으로 발현되는 방사선 관련 유전자의 microarray 분석

이영근,장화형,장유신,허재호,형석원,정혜영 한국환경생물학회 2004 환경생물 : 환경생물학회지 Vol.22 No.3

본 연구에서는 감마선으로 유도된 돌연변이체들에서 공통으로 발현되는 방사선 관련 유전자들의 발현을 연구하기 위하여, B. lentimorbus WJ5의 방사선 유도 돌연변이체에서 발현되는 유전자를 DNA microarray로 동시에 탐색하였다. DNA microarray는 B. lentimorbus WJ5 genome을 무작위로 절단하여 2,000단편으로 구성하였으며, 감마선 (^(60)Co)으로 유도된 7돌연변이체의 발현을 정량적으로 관찰하였다. 클러스터 분석결과 발현된 408 유전자 중 27개가 감마선 유도 돌연변이체 모두에서 유의하게 발현이 증가되었다. 특히, 복구(mutL, mutM)에너지 대사 (acsA, sdhB, p하, yhjB, citB), protease(npr), 산화자극에 대한 환원 (HMM)관련 유전자들이 동시에 증가되었다. 이는 감마선 유도 돌연변이체들에서 자발적인 직/간접 복구 관련 유전자의 발현 증가는 방사선 노출 직후 보이는 stress response와는 다른 현상임을 나타내는 것으로 생각된다. To study the radiation related gene expression in mutants of Bacillus lentimorbus WJ5 induced by gamm radiation, the simultaneous gene expression was analyzed by DNA microarray. We constructed DNA chips including two thousand randomly digested genome spots of B. lentimorbus WJ5 and compared its quantitative aspect with seven mutants induced by gamma radiation (^(60)Co). From the cluster analysis of gene expression pattern, totally 408 genes were expressed and 27 genes were significantly upregulated by the gamma radiation in all mutants. Especially, genes involved in repair (mutL, mutM), energy metabolism (acsA, sdhB, pgk, yhjB, citB), protease (npr), and reduction response to oxidative stress (HMM) were simultaneously upregulated. It seems that the induction of the direct and/or indirect repair related genes in mutants induced by gamma radiation could be remarkably different from the adaptive responses against acute exposure to radiation.