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Tetracycline이 白鼠의 骨成長 및 鑛化作用에 미치는 影饗에 關한 實驗的 硏究
金宗哲 최신의학사 1974 最新醫學 Vol.17 No.7
For the purpose of studying the effect of tetracycline on mineralization and growth, the rats were given a daily dose of 40mg. /kg. /day and 80mg. /kg. /day of tetracycline during the 8th-15th day of gestation. The effect of tetracycline on young rats delivered from adult rats receiving tetracycline had been assessed mainly through studies of body weight, length of tibia, size of mandible and contents of calcium. The latter was determined by atomic absorption spectrophotometry. The results were drawn as follows. 1. Tetracycline had the inhibitory effects on growth and mineralization in rats. 2. The more dosage of tetracycline had the severer inhibitory effects on growth and mineralization in rats. 3. The inhibitory effect on body weight was observed in group 1 (40mg. /kg. /day) during the 1st week after delivery, in group 2 (80mg. /kg. /day) during the 3rd week after delivery. The highest value of depression rate on body weight was 28.7% in group 2 (80mg. /kg. /day) at the 1st day after delivery. 4. The inhibitory effect on growth rate of tibia was observed in group 1 (40mg. /kg. /day) during the 2nd week after delivery, in group 2 (80mg. /kg. /day) during the 3rd week. after 4elivery. The highest value of depression rate on tibia growth was 36. 2% in group 2 (80mg. /kg. /&a.y) at the 1st day after delivery. 5. The inhibitory effect on growth rate of mandible was observed in group 1 (40mg. /kg. /day) during the 1st week after' delivery, in group 2 (80mg. /kg. /day) during the 3rd week after deiivery. 6. The calcium contents on mandible, tibia, anterior teeth and posterior teeth were incraasel in group 1 (40mg. /kg. /day) during the 1st week after delivery, in group 2 (80mg. /kg. /day) during the 4th week after delivery.
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金鍾喆 충주대학교 1992 한국교통대학교 논문집 Vol.26 No.-
In this paper, grinding condition, I have studied on the surface roughness and cutting force. I have obtained the results as follows : 1. In relation to surface roughness vs, grain sige, the grain sige number increased in sign. The more depth of cut was short the better surface roughness has appeared. In relation to feed speed vs. depth of cut, the more feed speed and depth of cut increased the more surface roughness has badly appeared. 2. In the grinding gorce, I have obtained the conclusion when vertical component of cutting force and axial component of cutting force were changed grinding condition. P?=C₁d???? P?=C₂d????
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식물응집소 Vicia pallida Turcz. 및 개 적혈구에 의한 사람 혈청형에 관한 연구
金鍾哲,文國鎭 고려대학교 의과대학 1987 고려대 의대 잡지 Vol.24 No.3
Some plant extracts are known to have biological activities as phytagglutinins (PHA's) and, in recent medicolegal studies, human sera were classified by their agglutination inhibiting properties to animal red blood cells. Vicia pallida Turcz. acts as pan-PHA to dog red blood cells. Therefore the author carried out agglutination inhibition test on Vicia pallida extract to dog red blood cells with 851 human sera, and the results are compared with known blood and serum types. The results are obtained as follows: 1. Human sera could be classified into two groups. One group inhibited agglutinating activities of vicia pallida extracts to dog red blood cells and the other did not. 2. The distribution of the former was 15% and the latter was 85%. 3. The agglutination inhibiting phenomena of human sera on Vicia pallida extract to dog red blood cells showed no constant relation with known blood and serum types such as ABO, MN, H, CI, Htr, PVI and CCI respectively. 4. This new classification of human sera is considered to be applicable to individual identification of blood stains.
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金鐘喆 忠州大學校 1981 한국교통대학교 논문집 Vol.14 No.2
The effect of tool wear, B.U.E.. and chattering which occurs in the process of cutting varies with the cutting condition. This article aims to search the cutting force in theoretical by studying the degree of cutting force when we change the depth of cut, feed, bite angle and cutting speed with oblique dimension of cutting force. In the result of the teat the more depth of cut increases, the more cutting force is increased, and more feed is in order, But it turned out that the more back rake angle increases, the less cutting force is.
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서울지역(地域) 중(中).고등학생(高等學生)의 전치외상(前齒外傷)에 관(關)한 연구(硏究)
김종철,Kim, Chong-Chul 대한소아치과학회 1979 大韓小兒齒科學會誌 Vol.6 No.1
The author surveyed traumatized anterior teeth of 12~17 year old 9453(male 4740, female 4713) school students. The results were as follows: 1. The prevalence of traumatized anterior teeth was $10.3{\pm}0.6%$. 2. The prevalence of traumatized anterior teeth of male was $12.2{\pm}0.9%$, and that of female was $8.4{\pm}0.8%$. The prevalence of male was higher than that of female. 3. The distribution of traumatized teeth by severity was as follows: Class I-65.3%, Class II-20.7%, Class III-8.2%, Missing teeth-5.4%, Others-0.4%. 4. Maxillary central incisors had the highest trauma frequence. 5. Single fractures were found to occur more commonly than multiple fractures. 6. The percentage of treated person was 5.1%. 7. 72.3% of the sample was not affected by the traumatized anterior teeth, and 27.7% of the sample thought the traumatized anterior teeth ugly.
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김종철 한국사립대학교 도서관협의회 2014 사대도협회지 Vol.15 No.-
대학도서관에서 공연되는 영상저작물 중 발행된 후 6개월이 지나지 아니한 경우는 저작자의 사전 허락이 있어야 한다. 한국영상산업협회는 사용료 징수 규정을 개정하여 대학도서관에 이에 대한 사용료를 징수하기 위한 시도를 하고 있다. 이러한 시도에 대하여 대학도서관 사서들은 사용료 징수 자체를 반대하는 의견이 많았으며, 만약 징수를 시도하면 사용료 징수 대상인 발행된 후 6개월이 지나지 아니한 영상저작물의 구입을 하지 않을 것이며, 구입을 하더라도 해당 영상저작물을 공연하지 않을 것이라고 하였다. 그리고 대학도서관에서 이용되는 영상저작물은 사용료 징수 대상이 되는 것은 거의 없는 것으로 나타났다. 이러한 대학도서관 사서들의 영상저작물 공연에 대한 인식과 영상저작물이 대학도서관에서 공연되는 현황을 살펴볼 때, 영상저작물의 공연에 대한 사용료는 저작자에게 경제적인 이익이 돌아갈 수 있을 정도로 많은 액수가 징수되지는 않을 것으로 예상된다. 따라서 저작권법을 개정하여 대학도서관에서의 영상저작물 공연은 저작권법 시행령 제11조에서 삭제하여 공정이용에 포함하거나, 저작권법 제31조를 개정하여 도서관에서의 저작권제한을 포함하는 것이 영상저작물 이용의 활성화에 도움이 될 것이라고 볼 수 있다.
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