制酸濟와 消化酵素配合에 依한 PH 및 糖化力의 變動

徐玉鎭 梨花女子大學校 藥學硏究所 1960 梨花藥學硏究 Vol.- No.2

ATM 멀티캐스트 스위치에서 분배기를 갖는 이원적 복사네트워크

이옥재,정동수 群山大學校 情報通信技術硏究所 1998 情報通信技術硏究論文集 Vol.2 No.-

In this paper, a new algorithm is proposed which distributes multicast cells in a copy network. The dual copy network is composed of running adder network, distributor, dummy address encoder, and broadcasting network. It is operated lower input address and higher one simultaneously by the distribution algorithm. As a result, for each input has a better equal opportunity of processing, cell delay and hardware complexity are reduced in copy network. Also, for it adopts the broadcasting network from an expansion Banyan network with binary three and Banyan network, overflow probability is reduced to a half in that network. As a result of computer simulation, the copy network processed by the distribution algorithm is remarkably improved in cell delay o input buffer according to all input loads.

시간대별 운동이 중학생 축구선수의 Blood Epinephrine과 Norepinephrine에 미치는 영향

최수연,양정옥 신라대학교 자연과학연구소 2003 自然科學論文集 Vol.12 No.-

The effect of a morning and afternoon training schedule on blood catecholamine in middle school soccer players. The purpose of this study was to assess the effect of a morning and afternoon training schedule on blood catecholamine in middle school students. Trained eleven middle school soccer players, average 16.0±0.7 years old and average 4.2±0.9 years trained, were randomly selected for this study. They were performed a morning training before a afternoon training, which were carried out three days laters. After each training, we collected their blood samples(25ml, and analyzed for assessing the change of catecholamine. The results of this study are followings. 1. After a morning training, there was no different in epinephrine, but norepinephrine was significantly increased (p<0.1). There was significantly increased norepinephrine (p<0.1) after a afternoon training unlike epinephrine. 2. Epinephrine and norepinephrine were increased at post training at all groups (p<0.5). In conclusion this study showed stress hormones, epinephrine and norepinephrine, were more influenced by training in the morning than afternoon.

中學生의 父母에 관한 反抗에 관한 硏究 : 大田地方 中學生을 中心으로

安玉秀 충남대학교 인문과학연구소 1974 인문학연구 Vol.1 No.1

I. This study was undertaken to understand the antagonistic attitudes of middle school students toward their parents: Why do they oppose their parents? How did they express their antagonism? How were they pacified? To study these problems, a search of literature for the theoretical background of pubescent antagonism, and a questionaire method for examining the middle school students' antagonism to their parents, were used. It was carried out on 367 middle school students including 182 boys and 185 girls in Daejon area, on August 16, 1974. II. Findings of the study are as follows: A. As for the antagonism at puberty it was revealed in forming of self-consciousness, and it resulted from the difference of the structure of consciousness between generations caused by rapid change in the culture, and from their difficulty in adjustment to the between-age from late childhood to adult. B. Results of the questionaire 1) As a whole, to be reproved was comparativily the most frequent reason of building up antagonism to their parents (toward the father 11.1%, toward the mother 11.3%) By the sex, boys were antagonistic when they were ordered to go errand in studying (10.7%), girls were antagonistic when reproved (14.8%). 2) On the attitudes of expressing their antagonism, as a whole, the most students (15.4%) wept by themselves. By the sex, boys went out of their homes and returned late in the evening to revolt against their parents (10.1%), girls wept alone (21.2%). 3) On being pacified, they would be appeased when their parents had kind attitudes to them (16.4%), when they reflected upon themselves (14.0%), when they talked and played with their friends(11.3%)with no difference between the sexes.

빈발재발성 미세변화 신증후군환아에서 발생한 다발성 뇌경색증

조성옥,한헌석,차상훈,이경희,박범수,하태선,채수안 충북대학교 의과대학 충북대학교 의학연구소 1995 忠北醫大學術誌 Vol.5 No.2

신증후군에서는 동맥 및 정맥의 혈전에 의한 혈전색전증의 위험이 높다. 이는 혈 중 응고인자 Ⅰ, Ⅱ, Ⅶ, Ⅷ, Ⅹ등의 증가와 뇨소실로 인한 antithrombin Ⅲ의 감소, 섬유소 용해계의 변화, 혈소판 응집력의 증가에 기인하며 그 외 스테로이드 투여, 이뇨제 투여, 저체액 상태도 관여한다고 생각하나 이런 과응고현상에 대한 정확한 병태생리는 규명되고 있지 않다. 저자들은 내원 21개원 전 처음 신증후군 증상을 보였고 신장 조직 검사상 미세변화 신증후군으로 진단을 받고 스테로이드와 면역 억제제를 사용하였으나 6개월에 3-4회의 재발을 보이던 중 내원 1달 전 보호자 자의로 모든 약물 복용을 중단한 채로 지내다가 고열과 반혼수 상태를 보여 내원한 7세 남아에서 다발성 뇌경객증을 발견하였기에 문헌 고찰과 함께 보고하는 바이다. The risk of thromboembolism by arterial or venous thrombosis is high in the nephrotic syndrome. This may be due to the increased serum concentrations of the factor Ⅰ, Ⅱ, Ⅶ, Ⅷ, Ⅹ etc, decrease of antithrombin Ⅲ due to urinary loss, the change of thrombolytic system, increase in the platelet aggregation capacity, the use of steroid, diuretics, and hypovolemic state. But, the pathophysiology of this hypercoagulable state has not been clear. A 7-year- old boy had been diagnosed as having frequently relapsing minimal change nephrotic syndrome, 21 months ago. In spite of the administration of prednisolone and cytoxan, he had presented recurrent proteinuria in the frequency of 3-4 times per 6 months. From 1 month prior to visiting emergency room, his parents discontinued his medications, therefore, he showed fever and semicomatous mental status. In brain MRI study, multiple cerebral infarcts were noted. So, the authors report a case of multiple cerebral infarcts in a patient with frequently relapsing minimal change nephrotic syndrome with a brief review of related literature.

키토산이 배양중인 치주인대세포와 치은섬유아세포에 미치는 영향

김옥수,정현주 전남대학교 치과대학 2001 구강과학 Vol.13 No.1

The aim of this study was to evaluate the effects of chitosan coating on the attachment, proliferation, functional and morphological change of periodontal ligament cells and gingival fibroblasts. Primary culture of human periodontal ligament cells and gingival fibroblasts were grown in Dulbecco's modified Eagle's medium with 10% fetal bovine serum and 1% antibiotics. In experimental group, cells were inoculated in the multiwell plates coated with chitosan in concentration of 0.02, 0.2 and 2㎎/㎖. Cell counting and MTT assay were done after 0.5, 1.5, 3, 6 and 24 hours of incubation to evaluate the cell attachment, and then after 2 and 7 days of culture th evalute the cell proliferation. The alkaline phosphatase activity was measured after 4 and 7 days of culture and the ability to produce mineralized nodules was evaluated after 21 days of culture. The results were as follows: 1. The morphology of both cells on the chitosan coating was round or spheric. Round cells were aggregated arger 6 hours of culture. Aggregated cells on the chitosan ­ coated surface showed nodule ­ like appearance after 24 hours of culture and not achieved confluency at 7 days. 2. During early period of culture, the attachment of periodontal ligament cells and gingical fibroblasts were inhibited by chitosan coating Inhibition of cell attachment tended to increase with the concentration of chitosan. 3. At the chitosan concentration of 0.02 and 0.2㎎/㎖, periodontal ligament cells were more rapidly proliferated at 7 days, compared to the control group. At the concentration of 2㎎/㎖, the proliferation of gingival fibroblasts and periodontal ligament cells was inhibited(p<0.01). 4. Alkaline phosphatase activity of periodontal ligament cells was increased in chitosan ­ coated group, especially at the concentration of 0.02㎎/㎖ after 4 days of culture. Alkaline phosphatase activity of gingival fibroblasts was inhibited by chitosan coating and decreased in course of time. 5. Periodontal ligament cells produced mineralized nodules on chitosancoated wells without the addition of mineralized nodule forming materials (ascorbic acid, β ­ glycerophosphate, dexamethasone). With the addition of mineralized nodule, forming materials, periodontal ligament cells produced more mineralized nodules at the concentration of 0.02㎎/㎖, compared to the control. Gingival fibroblasts also produced the mineralized nodule at the concentration of 2㎎/㎖ of chitosan. In summary, the attachment, proliferation, cell activity, and alkaline phosphatase activity of periodontal ligament cells depended on the concentration of coated chitosan and those of gingival fibroblasts were inhibited by chitosan. Chitosan stimulated mineralized nodule formation by periodontal ligament cells. At the appropriate concentration (0.02㎎/㎖), chitosam could increase alkaline phosphatase activity, stimulate the formation of mineralized nodule by periodontal ligament cells have antifibroblastic activity on gingival fibroblasts. These results suggest that chitosan can be used as an adjunct of regeneration, bone graft and the matrix of tissue engineering for periodontal regeneration, especially bone regeneration.

죽염 처리 청국장의 기능성 증진

김수옥,박수영,이숙희,박건영 대한암예방학회 2003 Journal of cancer prevention Vol.8 No.4

코어방적사직물의 구김회복거동에 관한 연구

성수광,권오경,김효대 한국의류학회 1989 한국의류학회지 Vol.13 No.3

In this paper, the fabric specimen undergoes repeated laundering under given condition. After this cyclic laundering was applied, the crease recoveries of the specimen were measured using shirley crease revovery tester in order to evaluate the effect of factors at given condition during crease deformation. 5 samples of grey plain cloth were desized, alkali-scoured, bleached, whased with water, and air-dried. All tests were made on samples preconditioned to 65% RH and 20℃. The experimental results were analysed statistically to relate crease recoveries and the properties of smaples, recovery periods (time) of crease. Furthermore, the crease recoveries of core-spun yarn woven fabrics were discussed in comparison with those values for 100% combed cotton yarn woven fabric and 65% polyester 35% carded cotton blended yarn woven fabric. The results obtained are as follows; 1. Regardless of materials, remarkable decrease are observed in crease recoveries about 1-5 cycles of the repeated laundering, but slack decrease are observed in crease recoveries after 5 cycle of the re-peated laundering. 2. Crease recoveries (a) of core-spun yarn woven fabrics are relate to recovery periods (t) of crease as follows; loga=0.01415 logt+2.1168 (r^2=0.94) 3. Core-spun yarn woven fabrics were superior to 100% combed cotton yarn woven fabrics and 65% polyester 35% carded cotton blended yarn woven fabric in crease recoveries. 4. Crease recoveries (a) of core-spun yarn woven fabrics are relate to cover factor (CF), thickness (T) at pressure 0.5gf/㎠, weight (W) as follows; loga=-0.3482 logCF-0.4924 logT-0.4727 W+2.4243 (r^2=0.88) 5. Crease recoveries (a) of core-spun yarn woven fabrics are relate to 2HB/B, 2HB/W, ^3√B/W, WC/T which are concerning to formation of weared clothes and bending tran formation behavior as follows; log a=0.0091 2HB/B+0.4667 2HB/W+0.0185 ^3√B/W-+0.0114 WC/T+1.8433 (r^2=0.86)

自然科 實驗學習指導方法의 硏究 : 탐구학습의 효율화를 위한 재료개발

최수안,오진태,옥치율 부산교육대학교 과학교육연구소 1985 科學敎育硏究 Vol.10 No.-

It may be said that the mainpost of natural science study is the inquring study and as for the point of observation and experiment which is a kind of inquiring process, the success of natural science study is dependent upon study materials. Therefore, in order to develop more effective inquring activities, successive studies such as the ploblem solution, improvement and development of study materials are needed. Several units is the field of chemistry and biology are selected, and several study materials improved and developed are examined as followers: 1. Several experiment methods for the game in order to observe the presence of air are tried. 2. In order to observe the solution phenomena of air easily, new experiment designe is devised, ammonia is soluble in the water including two drops of phenolphthalein and the solution phenomena of air changing into red. 3. In the experiment of the generation of carbon dioxide using every kind of shelfish instead of lime, the amount of the generation of carbon dioxide from the concentration of hydrochloric acid and the amount of shelfish is compared and the effort of substitute materials is examined. 4. The utility factor or the inquring study is devised through the utilization of waste materials, the development of substitute materials and the productive activities of instrument observation using study materials used separated units of materials. 5. It is found that a tadpole, a mud-snail and a killifish substitute for a planaria with a living thing material in the field of biology is available for the revival experiment.

성교육 실시에 따른 성지식, 성태도 변화 연구 : focusing on the 1st grade students in girls' junior high schools 1학년 여중생을 대상으로

계수연,문인옥 韓國保健敎育 ·健康增進學會 1999 보건교육건강증진학회지 Vol.16 No.2

The purpose of this study was to assess the effect of sex education on knowledge and attitude related to sex. The subjects were taken from by 199 students in 3 classes from 1st grade in H girl's junior high school as the study group, and 2 classes from 1st grade in S girl's junior high school as control group. During the survey period(September 21, 1998 to September 30, 1998), 6 times in terms of one-hour class for sex education were taught to the study group. A pre-test was executed on September 19, 1998 and the post-test on September 30. The findings were as follows. 1. According to the research, 20.1% of the subjects have experienced sex education from parents and 89.9% from teacher. They have mostly obtained the sex-related information from teachers(59.8%), following movie, radio, TV, or video tape(40.7%), friends(35.2%), reading materials such as books, cartoons, news papers and magazines(31.7%), parents(15.6%), siblings(7.0%), PC(1.5%) and telephone service(1.5%). 2. 27.1% of the subjects reported that they had sex-related worry concerning from friendship with the opposite sex, following physiological phenomenon(31.5%), sex violence(11.1%), physical characteristics(7.4%), VD and contraception(5.6%), sexual impulse(5.6%), pregnancy and delivery(5.5%), and sexual behaviour(3.7%). The research showed that the adolescents usually solved their problems through the consultation with theifriends(44.4%). However, 16.7% of the subjects were turned out not to request any solution. The other minor routs to settle their problems were written materials such as books, magazines(13.0%), parents(13.0%), movie, radio, TV, or video tape(5.5%), acquainted female elders(3.7%) and teachers(3.7%). 3. The most interesting part regarding sex was the friendship with the opposite sex(61.8%), following adolescent's emotion(55.8%), physiological differences between two genders(52.8%), AIDS(48.7%), VD(46.7%), pregnancy(45.2%), contraception(45.2%), abortion(41.7%), intercourse(41.7%), masturbation(41.2%), sex violence(41.2%) and genital structure and secondary sexual characteristics(28.6%). 4. In regard to characteristics of the subjects influencing sex-related knowledge, the higher educational career of mother, living with at least either parent and the experience of sex education by teachers were statistically significant factors(p〈0.05). 5. In regard to characteristics of the subjects influencing attitudes toward sex, the experience of sex education by parents or teachers was a statistically significant factor(p〈0.05). 6. The analysis of knowledge score comparing results before and after sex education showed that control group's score decreased from 12.5 to 12.44 while the study group's score increased from 12.33 to 21.31, which was statistically significant(p〈0.001). 7. The analysis of the attitude scores before and after sex education showed that the control group's score slightly increased from 55.57 to 56.36, while the study group's score increased from 54.79 to 61.95, which was statistically significant(p〈0.001). 8. The level of sex-related concerns of the study group after sex education marked both the increase in some items and the decrease in others. 9. Most instructive session among the sex education was the third “to be a good friend to the opposite sex”(27.0%).