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

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.

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.

분산 버퍼를 갖는 Self-Routing ATM 스위치에 관한 연구

이옥재,정동수 群山大學校 1996 論文集 Vol.23 No.-

In this paper, we propose a new self-routing ATM (Asynchronous Transfer Mode) switch with distributed buffers. This switch is composed of 1x2 binary switching elements and concentrators. Switch element has selfrouting characteristic being routed by destination address in the cell header. Concentrator is composed of running adder, reverse Banyan network and shifter. FIFO(First In First OUT) buffers, to improve their efficiency, are connected to the output of the shifter, and their address is gradually increased by running adder to avoid internal blocking. Though ATM cells with the same destination address are routed through switching elements blocking does not break out at the last stage because of buffers. So, we evaluate the performance of proposed switch and analysis the throughput and cell delay.

죽염 처리 청국장의 기능성 증진

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

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.

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%).

女學生의 職業觀의 發達에 關한 硏究 : 大田地方을 中心으로

安玉秀 충남대학교 인문과학연구소 1976 인문학연구 Vol.3 No.1

To select a vocation and adjust in it depends mainly on one's vocational conception, which is formed through the long period being influenced by the environment. The purpose of this study is to examine the vocational conception of girl students on the developmental stages. It was carried out on 620 students including 306 girl students and 314 boy students to compare with girls' at Taejon area. The findings of the study are as follows 1) Both girl and boy students in the 5th grade are interested in their future vocations (94%). But the parents' attitudes are different from them, girls' parents (84%) have lower concern about the future vocations of their girls than the boys' (94%). 2) As age levels increased, the rate of girl students not to want occupation is increased (5th grade 0%, 8th grade 3.1%, 11th grade 3.6%), but boys all hope to have occupations. 6.4% of the parents of girl students don't hope their girls to have occupations. 3) Future occupation of the girl students is concentrated in the professional occupation (5th grade 74.8%, 8th grade 57.2%, l l th grade 76.2%) more than boy students. The types of professional vocation of girl students are so simple that 89% of them want to be the nurse and the teacher. 4) Future occupation of students is correlated with the parents' hoping occupation for their children but is not correlated with the present occupation of the parents. As the education levels of parents are higher, girl students hoping to have professional occupation are increased. 5) In regard to the reasons of the selection of future occupation, most of the girls respond to two items; one is to make a contribution to the society (5th grade 56.5%, Sth gade 47.3%, 11th grade 28.4%), and the other is interest and aptitude (5th grade 33.1%, 8th grade 47.3%, 11th grade 64.2%). Girl students are not interested in aughority or economic reason to select their occupations. 6) According to the findings, vocational guidance is needed to girl students to adjust to the modern society, many various occupations should be informed for them. Parents should expect their girls to adjust in various occupations depending on their interests and aptitudes, and make them actualize themselves through the proper vocations.

광중합방식이 콤포머의 변연폐쇄에 미치는 영향

조옥환,한진순,임미경,이수종 대한치과보존학회 2001 Restorative Dentistry & Endodontics Vol.26 No.1

The aim of this study was to evaluate the effect of various polymerization techniques on the microleakage of compomer restorations. Fifty extracted human premolar and molar were used and randomly divided into 5 groups. After cavity preparation, compomer (F2000) was filled according to the manufacturer's directions. All groups, except group 5, were filled using an incremental technique. Group 1was polymerized for 40 seconds at a continuous 485mW/㎠ with a VIP (Bisco, USA) light cure unit. Group 2 was polymerized for 20 seconds at a continuous 345mW/㎠ and then for 20 seconds at 645mW/㎠ with the VIP light cure unit. Group 3 was polymerized at 400mW/㎠, gradually increased to 50mW/㎠ per 10 seconds until 550mW/㎠ was reached; total 40 seconds with a Spectrum 800 (Dentsply Caulk, USA) light cure unit. Group 4 was polymerized for for 3 seconds using an incremental technique with a Flipo (LOKKi, France) light cure unit. Group 5 was polymerized for 3 seconds using a bulk fill technique with the Flipo light cure unit. The specimens were embedded with acrylic resin, and were sectioned with diamond saws in a mesiodistal direction along the longitudinal axis of the tooth so as to pass through the center of the restoration, and three surfaces (occlusal, pulpal, and gingival) were examined with SEM. The results were as follows; 1. Group 5 showed a significantly larger gaps compared to other groups on the gingival, occlusal, and pulpal walls. 2. All groups except group 5 had no statistically significant gap on the gingival, occlusal, and pulpal walls. 3. There was no significant correlation between the amount of enamel on the gingival and occlusal walls and polymerization shrinkage.

백서에서 Pulsed Nd:YAG Laser에 의한 치은절제술후의 치유양상

김옥수,정현주 전남대학교 치과대학 1995 전남치대논문집 Vol.7 No.1

Recently, dental laser have been applied for removal of soft tissues, hemostasis & blood coagulation, removal of benign & malignant tumor, treatment of leukoplakia, aphthous ulcer and herpetic lesion, implant second surgery, removal of granulation tissue, frenectomy, clinical crown lengthening, gingivectomy, gingivoplasty, and treatment of dentin hypersensitivity. Even though the frequency of laser treatment is increasing, the research on the healing process after gingivectomy using pulsed Nd : YAG laser is very rare. The purpose of this study was to observe and compare the wound healing after gingivectomy using scalpel and pulsed Nd : YAG laser in the rat. Gingivectomy was performed using pulsed Nd : YAG laser (SUNRISE Technologies, U.S.A., 1.5 Watts, 10pps) on the buccal gingiva of right maxillary first molar and using scalpel (No. 12) on the contralateral side. Those sites treated by surgical scalpel were designated as th control, and by pulsed Nd : YAG laser as the experimental group. Animals were sacrificed after 1, 2, 3, 5, 7, 11 and 14 days postoperatively, and specimens were histologically observed with light microscope. The results were as follows : 1. clinical observation Normal color and shape were observed at the 5th day in the control group and the 7th day in the experimental group. 2. Histologic findings 1) In the control group, denser inflammatory infiltration was observed. 2) Epithelialization started at the 2nd day in the control group, similar to the experimental group and completed at the 11th to the 14th day postoperatively. 3) In the experimental group, connective tissue showed the vacuole formation and degenerative change during early healing period. Healing of connective tissue was slower in the experimental group than in the control group by 2 days. 4) In the both groups, wound healing was completed at the 2nd week. From this study, gingivectomy using pulsed Nd : YAG laser seems to result in a little delayed wound healing process, compared to the gingivectomy using scalpel. Considering the clinical advantages of laser surgery, pulsed Nd : YAG laser might be useful device for gingivectomy.