New Zealand White 토끼의 생식세포 및 체세포 분열에 의한 염색체 분석

신선희,김희수,최영현,이원호 부산대학교 유전공학연구소 2001 분자생물학 연구보 Vol.17 No.-

토끼(New Zealand White rabbit)의 감수분열 및 유사분령상을 통해 그 염색체적 특징을 조사하였다. 감수분열 염색체의 표본 작성은 공기건조법을 다소 변형하여 사용하였고, 유사분열 중기상의 핵형분석에는 G-분염법을 이용하여 다음과 같은 결과를 얻었다. 1. 제1감수분열의 접합기와 태사기의 염색소립과 sex vesicles 및 동원체가 뚜렷하게 구별되었다. 태사기의 중기에서부터 후기 과정이 진행되는 동안에 2가염색체에서 측면으로 돌출한 머리카락 모양의 돌기들이 관찰되어졌고, 이 돌기들은 염색체가 lampbrush 염색체 구조의 모양이 되도록 해주었다. 이동기의 염색체들은 키아즈마의 수와 위치에 따라 분류가 가능하였다. 제1 감수분열 전기의 후반부 과정과 중기Ⅰ 시기에는 2가염색체로 된 21개의 상염색체와 1개의 말단결합으로 연결된 X-Y 염색체를 관찰할 수 있었다. 2. New Zealand White rabbit의 생식세포에서 관찰된 2가 염색체의 형태는 1CH, 1TAl 및 2TA 2가염색체 유형이 대부분을 이루었다. New Zealand White rabbit에서의 평균 키아즈마 빈도는 약 30.2로 나타났으며, 키아즈마 빈도가 복사기, 이동기 및 중기Ⅰ로 분열이 진행됨에 따라 다소 감소하는 경향이 있었다. 3. New Zealand White rabbit의 핵형분석에 의하면 염색체 수는 44개(2n=44)로서, 8쌍의 중부염색체, 9쌍의 차중부염색체, 4쌍의 단부염색체로 된 21쌍의 상염색체와 중부염색체인 1개의 X 염색체 및 단부염색체인 1개의 Y 염색체로 구성되어 있음을 알 수 있었다. Chromosomal characteristics of New Zealand White rabbit was studied at meiosis and mitosis. The meiotic chromosomal preparations were made with the modified air-drying method and karyotype analysis was performed with the G-banding technique, using isolated mitotic metaphase chromosomes of the New Zealand White rabbit. Chromosomes, sex vesicles and centromeres could be could be classified in the zygotene and the pachytene of the meiosis Ⅰ. The hair-like processes projecting laterally from the axes of bivalent chromosomes at the mid-late pachytene were basis of the numbers and the locations of chiasma in the diakinesis. Twenty-one autosomal bivalents and a single unequal terminally associated X-Y bivalent were observed during the late prophase and the metaphase of the meiosis Ⅰ. Most of the bivalent types observed in the New Zealand White rabbit spermatocytes were 1CH, 1TAl, and 2TA bivalents. The mean chiasma frequency (CE) of the male New Zealand White rabbit was 30.2, and it was found that the CF value tended to decrease through the diakinesis and the metaphase Ⅰ. The karyotype of the New Zealand White rabbit was a male chromosome number of 44(2n=44), comprising 8 pairs of metacentric, 9 pairs of submetacentric, 4 pairs of acrocentric autosomes, metacentric X chromosome and acrocentric Y chromosome.

食用色素開發에 關한 硏究

鄭輝秀,陳甲德 嶺南大學校 環境問題硏究所 1984 環境硏究 Vol.4 No.2

A study for development of natural red pigment in food and drug industry was proceeded to anthocyanin from prunus yedoensis Matsum, isolated through silica gel column and further subjected to TLC. The color effect and stability from several factors was detected by spectrophotometry in 520 nm and was compared to amaranth and then 1/200 times of it. The content of the color of the fruits of Prunus yedoensis Matsum was 0.6%. As this pigment was more safe about 7.4 times in ??,but was influenced by pH(3.0-8.0) and by some metal ions (??, ??, ??, ??),and respectively stable to temperature, sun light, ultra violet ray and organic acids than amaranth, and was not given a bad infouences by sugars, recovery of another characteristics of this pigment or co-factors to compensate and promote the color effect, for example Cu(), is expected.

퍼블리시티(Publicity)權에 관한 考察 : 槪念과 法的 性格을 中心으로 In the point of concept and legal character

鄭熙燮 東亞大學校 大學院 2000 大學院論文集 Vol.25 No.-

This is the study about the right of publicity that is the right of commercial appropriation of the value of properties of one's name or likeness of famous person (especially in the case of actors and professional sports players etc.). In United States, this right was developed as a concept of the right of property differ from privacy already in the 1950s. Recently in Korean situation, by the reason of radical development of popular entertainment, professional sports and advertising industr, there is many numbers of case that use of a name or likeness of famous person for advertisement, so then began to discuss about this right with many quarrels that one is stolen one's value of property by other with no permission. Correct understanding and responding of the right of publicity is very important by the meaning of cultural and legislative, that is the reason why I make a point of explaining about the concept and legal character in preference. Especially in the problem of transferability as a legal character of this right, there is a limitation of transfer or inheritance irresistibly for the two nature of personality and property.

심 훈의 <織女星>에서의 인물의 전형성과 역사적 전망의 문제

최희연 연세대학교 국어국문학과 1988 연세어문학 Vol.21 No.-

수소화붕소 알루미늄에 의한 몇가지 옥심화합물의 환원

咸喜錫 광주보건대학 1981 論文集 Vol.6 No.-

The representative oximes of Acetone, Acetophenone, Benzophenone, Butyraldehyde, Benzaldehyde and Cyclohexanone were reduced with Aluminum Borohydride in tetrahydrofuran at room temperature. Acetoneoxime, Butyraldoxime and Cyclohexanone oxime were reduced into amines of 68.74 and 73%, which were only Primary. Benzophenone oxime was reduced into amine of 98%, and its Composition of primary and secondary were 56 and 44%. In case of acetophenone oxime, amine was obtained 74%, and its primary and seconary amines were 93 and 7% respectively. The yield of amine from the reduction of Benzaldoxime was 73%, and the primary one of amines produced was 91%

항 응고제 사용 후 발생한 흉추의 급성 자발성 경막외 출혈 : 1예 보고

박희전,전종세 대한척추외과학회 2004 대한척추외과학회지 Vol.11 No.2

실험실 수업에 대한 중,고등학교 생물교사의 태도

김희백,길봉섭 圓光大學校 基礎自然科學硏究所 1997 基礎科學硏究誌 Vol.16 No.1

Biology teachers' beliefs about science and school science and their perceptions of the science laboratory learning environment were investigated with an assumption that science laboratory teaching would be affected by science teachers; beliefs and attitudes. Likert-scale questionnaires of BASSSQ and SLEI were used in this study. The major findings were as follows: 1. Biology teachers showed inconsistent beliefs about science and school science. Their reponses reflected a patch-like view of postmodern epistemology and objectivism. They also showed somewhat different views about science and school science. It was found that biology teachers had strong objectivist views about science in some parts, but they had moderate constructivist views about school science in other parts; 2. The mean scores of student cohesiveness, integration, and rule clarity on the actual version in SLEI were relatively high, but those of open-endedness and physical environment were very low; 3. There was no association between teachers' beliefs about science and school science, and their perceptions of the actual science laboratory learning environment. And there were statistically meaningful correlations on three scale of student cohesiveness, integration, and rule clarity between perceived learning environment and preferred learning environment. We could not show a causal relationship among teachers' beliefs, attitude and their science laboratory learning environment do have a role in constructing a desirable science laboratory learning environment, as we found that there were statistically correlations between them.

다짐점토의 간극수압 모델에 관한 연구

임희대,박수용 忠南大學校 産業技術硏究所 1995 산업기술연구논문집 Vol.10 No.1

The behavior of an unsaturated soil tested under undrained loading conditions depends on the magnitude of the pore-air and pore-water pressure developed. This paper derives pore pressure parameters that can be utilized in determining the pore pressure response of the compacted clayey materials. Pore pressure parameter expressions are also derived for the pore-water pressures induced as a result of isotropic stress changes and deviator stress changes during undrained loading. The parameters required to computation in the proposed model can be readily determined from the conventional triaxial compression tests. To examine the degree to which the proposed pore pressure model reflects the results of triaxial tests, The back analyses carried out, It is shown from the examination that agreements are generally satisfactory.

퍼블리시티(Publicity)權의 保護對象에 관한 小論

鄭熙燮 동아대학교 2001 大學院論文集 Vol.26 No.-

This is the study about the right of publicity that is the right of an individual to protect his or her name, likeness, image, signature, photograph, voice and other distinctive characteristics from non-authorized commercial use by others. In United States, this right was developed as a concept of the right of property differ from privacy already in the 1950s. Recently in Korean situation, by the reason of radical development of popular entertainment, professional sports and advertising industry, there is many numbers of case that use of a name or likeness of famous person for advertisement, so then began to discuss about this right with many quarrels that one is stolen one's value of property by others with no permission. Correct understanding and responding of the right of publicity is very important by the meaning of culture and legislative, that is the reason why I make a point of explaining about the subject of protection of this right in preference.

경험적 정보를 이용한 kNN 기반 한국어 문서 분류기의 개선

임희석,남기춘 한국컴퓨터교육학회 2002 컴퓨터교육학회 논문지 Vol.5 No.3

문서 자동 분류란 입력 문서에 이미 정해져 있는 특정 범주를 할당하는 작업을 의미하며 이는 문서의 효율적, 체계적 관리를 위하여 그 필요성이 증가하고 있는 실정이다. 현재 국내외에서 기계 학습 방법을 이용한 문서 자동 분류에 대한 연구가 활발히 진행되고 있으나 대부분의 연구는 문서 분류기의 성능 향상을 위한 새로운 학습 모델 제안과 학습 모델간의 상호 비교 연구에 치중되어 있으며 특정 학습 모델을 이용한 분류 시스템의 최적화나 개선 방안에 대한 연구는 다소 미흡한 실정이다. 이에 본 논문은 kNN 학습 방법을 이용한 문서 분류 시스템의 성능 향상에 중요한 역할을 하는 파라미터를 정의하고 실험을 통해서 얻은 경험적 정보를 이용한 한국어 문서 분류기 성능 개선 방안을 제안한다. 실험 결과, 이웃 문서들간의 유사도 가중치를 사용하는 분류 함수, 분류 정보를 이용한 자질 선택 방법, 그리고 전역적 분류 방법이 높은 성능을 보였고, 분류 영역에 따라 신중히 결정된 k값을 사용한 지역적 방법도 많은 계산량을 필요로 하는 전역적 방법과 유사한 성능을 보일 수 있음을 확인하였다. Automatic text classification is a task of assigning predefined categories to free text documents. Its importance is increased to organize and manage a huge amount of text data. There have been some researches on automatic text classification based on machine learning techniques. While most of them was focused on proposal of a new machine learning methods and cross evaluation between other systems, a through evaluation or optimization of a method has been rarely been done. In this paper, we propose an improving method of kNN-based Korean text classification system using heuristic informations about decision function, the number of nearest neighbor, and feature selection method. Experimental results showed that the system with similarity-weighted decision function, global method in considering neighbors, and DF/ICF feature selection was more accurate than simple kNN-based classifier. Also, we found out that the performance of the local method with well chosen k value was as high as that of the global method with much computational costs.