전기자극이 성견 골결손부에 매식된 임플란트 주위조직의 치유에 미치는 영향

심재창,김영준,김옥수,정현주 전남대학교 치의학연구소 2003 구강과학 Vol.15 No.2

Several experimental studies showed that the application of small amounts of electric current to bone stimulated osteogenesis at the site of the cathode and suggested that electrical currents promote osseointegration around dental implants. The purpose of this study was to determine the effect of direct microcurrent to endosseous titanium implants placed in bone defects. The right and left 2nd, 3rd and 4th mandibular premolars in ten mongrel dogs (15kg of weight) were extracted. One month later, Ti-machined screw type implants(3.8 mm diameter×8.5 mm length, AVANA�, Ostem) were placed in surgically created circumferential defect area(width 5mm, depth 4mm). The implants were divided into three groups according to the treatment modalities: Control group- implants without electrical stimulation; Experimental group I- implants with allogenic demineralized freeze dried bone grafting and Experimental group Ⅱ- implants allogenic demineralized freeze dried bone grafting and electric stimulation. The animals were sacrificed in the 4th and 8th week after implant placement and un-decalcified specimens were prepared for histological and histometrical evaluation of bone-implant contact ratio (BIC) and bone formation area ratio (BFA) in defect area. Some specimens at 8 weeks after implantation were used for removal torque testing. Histologically, there were connective tissue infiltration in the coronal part of defect area in control and the experimental group I. whereas direct bone contact was found in the experimental group Ⅱ without connective tissue invasion. Average BIC ratios at 4 weeks of healing were 60.1% in the experimental group Ⅱ, 47.4% in the experimental group I and 42.7% in the control. Average BIC ratios at 8 weeks after implantation were 67.6% in the experimental group Ⅱ, 55.9% in the experimental group I and 54,6% in the control. The average BFA ratio was 84.0% in the experimental group Ⅱ, 71.8% in the experimental group I and 58.8% in the control at 4 weeks, and the BFA ratios were 89.6% in the experimental group Ⅱ, 81.4% in the experimental group I and 70.5% in the control at 8 weeks after implantation. The experimental group Ⅱ showed also significantly greater BIC and BFA ratios compared to the control and the experimental group I (p<0.05). The removal torque values at 8 weeks after implantation were 56 Ncm in the experimental group Ⅱ, 49 Ncm in the experimental group I and 43 Ncm in the control. There was a statistically significant difference among 3 groups(p<0.05) . These results suggest that electrical stimulation improve and accelerate bone healing around endosseous titanium implants in bone defect.

한국국민학교 학생집단에서의 회충감염율 분석

전오배,강신영,심태섭 중앙대학교 의과대학 의과학연구소 1981 中央醫大誌 Vol.6 No.1

The soil-transmitted and contagious helminthes, such as Ascaris lumbricoides, whipworm, hookworm and pinworm are the commonest and the most widespread human parasites in Korea. However, the first intestinal nematode infection has been taken into account as the great endemic parasitic disease in this country. Data cited from KAPE(korean Association for Parasite Eradication) were analyzed on the bases of infection rate, fertilized ova passers/unfertilized ova passers and the evaluation of the effect of mass control on primary school-children during the past 10 years from 1969 to 1978. The results were summarized as follows: 1) The overall prevalence of Ascaris infection was decreased from 57.1% in 1969 to 22.8% in 1978 and the cumulative percent of decrease during that period was 34.3% and the mean annual decrease rate represented as 3.8%. 2) The cumulative rate of decrease in primary school children was in the range of 32.2-36.8% by school year. 3) The prevalence of Ascaris infection of primary school-children in rural area was 60% in 1969, it decreased to 17-30% in 1978, while the rates tangibly dropped to about 10% level in urban primary-school children. 4) The positive rate of A. lumbricoides in 1973 was composed of fertilized and unfertilized ova passers in the ratio of 43.l% :9.2% (F/U=4.68). Five years later in 1978 it changed to 3.22. 5) By applying the present results to the statistical model of Hayashi(1977), the theoretical infection rate per month and cure rate per treatment were computed as 2.54% and 33.3% respectively in primary-school children during the past 10 years. And the observed data were coincide with the theoretical data. From the above statistical analyses, it is distinct that the prevalence and F/U ratio remarkably decreased by efficient mass control on primary school children during the past 10 years from 1969 to 1978.

방염호를 이용한 다색성 천연염료의 염색성

이일심,차옥선 漢陽大學校 韓國生活科學硏究所 2000 韓國 生活 科學 硏究 Vol.- No.18

It was necessary to study on dyeability of natural dyes by paste for variety of Korean natural dyeing fabrics. So, this study was to investigate K/S value and color difference of silk fabrics with the red dyes of extract concentration, mordants and mordanting method, penetration of paste, the effects of steaming and print bean juice from sappan wood. Intensity of λmax of red dyes with the extract concentration, mordants from sappan wood was changeless in 460 nm. The absorbancy was changed with mordants from 460nm to 560nm. K/S value of silk fabric was increased with Mordants and mordanting method, however, characteristic color was transformed. Compound paste of rice and glutinous-rice was more useful than flour and CMC in defense paste dyeing because it has high penetration. And yet, the crack in high mixing rate of flour was more effective than wax. K/S value after print dyeing paste was CMC> sodium alginic acid> rice and glutinous-rice> flour and CMC. But, CMC and sodium alginic acid were more dry time, less equal dyeing than them. Steaming and print bean juice were valuable to enhance K/S value.

미더덕의 지질 및 Ex분중의 유리아미노산에 관한 연구

鄭玉姬,沈貞淑 新羅大學校 1983 論文集 Vol.14 No.-

우리나라 남해안 지방의 향토식품으로 즐겨먹는 미더덕의 지질의 특성과 Ex분중의 유리아미노산의 조성을 분석한 결과는 다음과 같다. 1. 미더덕의 조지질 함량은 1.6%였고 IV는 157이었다. 2. TLC에 의한 지질의 조성은 원점에서부터 polalipid, monoglyceride, sterol, tryglyceride의 순으로 나타났다. 3. 미더덕의 총지방산조성은 ??(17.26), ??(17.49), ??(14.27)순으로 가장 많았다. 4. 미더덕 중성지질의 지방산은 ??(23.57%), ??(14.33%), ??(14.0%)이 主된 조성이었고 극성지질의 지방산은 ??(20.82%), ??(11.66%), ??(11.19%)가 가장 많은 것으로 나타났다. 5. 미더덕 지질의 총 지방산 중에는 포화지방산이 22.92%, monoenoic 지방산이 32.89%, polyenoic 지방산이 42.02%이었고 6. 미더덕지질의 중성지질과 극성지질의 지방산 중에는 포화지방산이 각각 43.14%, 30.67%, monoenoic지방산이 각각 30.43%, 18.25%, polyenoic 지방산이 각각 26.43%, 50.22%,였다. 7. 미더덕 Ex분중의 유리아미노산의 주된 조성은 glycine 28.92%, alanine 19.62%, glutamic acid 14.33%, proline 9.57%으로 나타났다. This study was aimed to investigate the lipid and free amino acid components in mideuduck which is one of the local foods offered in the south coast of Korea. The results of the investigation are as follows: 1. Total lipid components contained in mideuduck is 16% and the Iodine Value is 157. 2. The lipids components by TLC is in order of polar lipids, monoglyceride, sterol and triglyceride from the baseline. 3. The total fatty acids composition in mideuduck is in order of ??(17.26%), ??(17.49%), ??(14.27%). 4. The fatty acids of neutral lipids in mideuduck consist mainly of ??(23.57%), ??(14.33%), ??(14.0%). The fatty acid of polarlipids consist mainly of ??(20.82%), ??(11.66%), and ??(11.19%) 5. The fatty acids in mideuduck consist of 22.92% saturated fatty acids, 32.89% monoenoic fatty acids, and 42.02% polyenoic fatty acids. 6. The components of neutral lipids and polar lipids in mideuduck are 43.14% and 30.67% saturated fatty acids, 30.43% and 18.25% monoenoic fatty acids, and 26.43% and 50.22% polyenoic fatty acids resectively. 7. The main components of free amino acids in the extract of mideuduck are 28.92% glycine, 19.62% alanine, 14.33% glutamic acid and 9.57% proline.

문맥적 상황중심의 그림 그리기 과업이 중증의 베르니케 실어증과 브로카 실어증에 미치는 영향

이옥분,심홍임,정옥란 한국음성과학회 2003 음성과학 Vol.10 No.3

This study attempted to determine the effect of a context-based drawing task on the language expression of a severe Wernicke's and Broca's aphasic. The subjects in this study showed a poor auditory comprehension and naming performance. They also showed paraphasia and preservation. This study focused on improving language expression by a drawing task based on conversation at hand. Ten target words were chosen which were easily drawnable and familiar to the subjects. The results showed that the context-based drawing task was effective on improving the subjects' confrontation naming ability and expressive language ability in terms of explanation of sentences. In addition, the Broca's aphasic showed improved naming ability when the contextual cues were given and he was supposed to spontaneously name words.

山椒脂質의 脂肪酸 組成에 관한 硏究

鄭玉姬,沈貞淑 新羅大學校 1983 論文集 Vol.14 No.-

우리가 추어탕의 향신료로서 애용하고 있는 산초 지질을 과피와 알맹이로 분류하여 실험 조사한 결과는 아래와 같다. 1. 산초의 지질량은 과피가 5.81%, 알맹이가 1.43%였다. 2. 산초 지질의 IV는 과피가 135, 알맹이가 101였다. 3. 산초 지질의 조성은 과피가 polarlipid, monoglyceride sterol, free fatty acid, triglyceride, sterol ester의 순으로 나타났으며, 알맹이는 polar lipid, sterol, trglyceride, stetolester, hydrocarbon순으로 나타났다. 4. 산초 지질의 총지방산은 과피에선 ??(30.2%), ??(17.6%), ??(9.9%)가 주된 지방산이었고, 알맹이에선 ??(26.4%), ??(20.5%), ??(18.6%)의 순으로 나타났다. 산초의 중성지질의 지방산은 과피에선 ??(42.5%), ??(11.0%), ??(10.6%)가 主된 조성이었고, 알맹이에선 ??(26.7%), ??(23.0), ??(20.0%)가 주된 지방산이었다. 6. 산초의 극성지질의 지방산은 과피에선 ??(35.5%), ??(17.4%), ??(13.9%)가 주된 지방산이었고, 산초 알맹이에선 ??(33.7%), ??(16.1%), ??(11.7%)가 주된 지방산이었다. 7. 산초 과피의 불포화지방산의 함량은 총지질 지방산에서 61.0% 중성지질 지방산에서 74.3%, 극성지질 지방산에서 75.2%였고, 산초 알맹이의 불포화지방산 함량은 총지질 지방산이 68.3%, 중성지질 지방산이 65.3%, 극성지질 지방산이 42.4%였다. The purpose of the study is to investigate the lipids of Zanthoxylum schinifolium which is widely used as a perfuming condiment for Chueutang. As concerns the lipids, the Zanthoxylum Schinifolium is classified into the husk and seed. The results of investigation are as follows: 1. The lipids contents of Zanthoxylum Schinifolium are 5.81% in the husk and 1.43% in the seed. 2. The Iodine Values of Zanthoxylum Schinifolium lipids are 135 in the husk and 101 in the seed. 3. The components of Zanthoxylum Schinifolium lipids contained in the husk are in order of polar lipids, monoglyceride, sterol, free fatty acid, triglyceride and sterol ester. In the case of the seed, it is in order of polar lipids, sterol, triglyceride, sterol ester, and hydrocarbon. 4. The main composition of total fatty acids in the Zanthoxylum Schinifolium husk in order of ??(30.2%), ??(17.6%), and ??(9.9%). The composition of the seed is in order of ??(26.4%), ??(20.5%) and ??(18.6%). 5. The fatty acids of neutral lipids in Zanthoxylum Schinifolium consist mainly of ??(42.5%), ??(11.0%) and ??(10.6%) in the case of husk and ??(26.7%), ??(23.0%), and ??(20.2%) in the case of seed. 6. As for as the fatty acids of polar lipids are concerned, the husk contains mainly ??(35.5%), ??(17.4%), and ??(13.9%), and the need ??(33.7%), ??(16.1%) and ??(11.7%) respectively. 7. The contents of unsaturated fatty acids contained in the husk of Zanthoxylum Schinifolium are 61.1% in the total lipids, 74.3% in the neutral lipids and 75.2% in the polar lipids. The investigation of the seed reveals 68.3%, 65.3% and 42.4% respectively.

사람의 생식과 발생에 대한 애니메이션 학습 프로그램의 개발 및 적용

차옥경,심규철,김현섭 한국과학교육학회 2005 한국과학교육학회지 Vol.25 No.2

중학교 3학년 생명 영역의 생식과 발생 단원에 대한 애니메이션 학습 프로그램(Animation Learning Programs)을 개발하였다. 애니메이션 학습 프로그램의 교육적 효과는 지식 성취도와 개념 변화를 통해 조사하였다. 본 프로그램의 구성은 (1) 남, 여성의 생식기 구조와 기능, (2) 수정과 임신, (3) 태아 발생 등의 주제로 이루어져있다. 지식 성취도의 결과 여성의 생식구조와 수정과 임신에 대해선 매우 유의미한 효과(p=0.009)를 나타났으며 남성의 생식기 구조와 기능에서는 유의미하지는 않지만 효과적(p=0.061)으로 나타났다. 학습자 수준에 의한 지식성쥐도 분석결과 중수준의 학생에게 유의미한 효과가 나타나는 것으로 보아 본 프로그램의 활용도 매우 보편적이라 사료 된다. 특히 면담에 의한 개념 변화 조사 결과 학생들은 수정과 임신의 초기발생에 대해 본 프로그램이 매우 영향을 미쳤으며 실험 집단의 학생들은 사전보다 사후에 향상된 개념을 갖는 것으로 조사 되었다. 따라서 본 애니메이션 학습 프로그램은 생물학에서 현상위주의 과정을 설명하는데 매우 효과적이라 사료된다. The effect of animation learning programs (ALPs) upon achievement and conceptual change of the topics on reproduction and development was investigated in the middle school (9th grade) students. The topics covered by the ALPs were as follows: (1) reproductive structure and function of male and female in human; (2) process of fertilization and pregnancy in human; and (3) development of fetus. Two groups of student participated in this experiment; (1) treatment group subjected to the use of ALPs, and (2) control group. The results showed significant effect (p<0.05) on the achievement in learning of reproductive structure and function of female and process of fertilization and pregnancy. The results mostly showed significant improvement on the achievement in students of the middle level of learning. Thus, the ALPs may be applied universally in other schools. The conceptual change on the process of fertilization and pregnancy in human showed significant improvement in treatment group in comparison to control group. Therefore, the use of ALPs was effective in understanding and perception of abstract or difficult to direct experience learning contents.

거친 표면을 가진 흡수체와 버퍼의 측면에 의한 극자외선 산란효과

권영근,심상진,김종회,김옥경,오혜근 한양대학교 이학기술연구소 2003 이학기술연구지 Vol.6 No.-

마스크 상의 거친 표면을 정의하기 위해서 Monte-Carlo 방법이 적용되었다. 극자외선 마스크의 거친 표면 함수, 즉 power spectral density 에 의해 표현된 무작위적인 표면의 높이 변화는 상면에서의 전기장을 계산하기 위해서 재정의 되었다. Feynmann의 접근 방식과 유사한 산란에 대한 일반식을 유도하였고, 이는 결상과정에서 마스크의 단차상의 거친 측면에 의한 효과를 알아보기 위해서 적용되어졌다. 거친 표면과 완전히 편평한 표면에 대한 전기장의 위상과 진폭 변화 정도를 비교하기 위해서 다중 산람 문제 또한 여러 다른 패턴에 대하여 이 논문에서 다뤄졌다. The Monte-Carlo Method is adopted to define the roughness of the mask structure. A random surface height variation described by power spectral density for the rough surfaces of an estreme ultraviolet (EUV) mask is to be redefined to calculate the field in the image plane. A general explicit formula of the scattering, which is analogous to Feynman's approach, is derived, and it is adapted to the EUV mask structure to evaluate the effect of the surface roughness of the side wall of the mask topography on the image formation. The multiple random scattering problems are dealt with the different pattern types in order to compare field variations in phase and amplitude with the ideal flat surface.

청소년의 성교육을 위한 기초연구

문인자,조옥희,김효심 한국 가정과 교육 학회 1997 한국가정과교육학회지 Vol.9 No.1

The purpose of this study is to survey middle school students' awareness of sexuality and relationships with the opposite sex. The students need to have at their disposal basic resources on sexuality education and an established and systematic curriculum. To achieve this result, questionaires were distributed to 640 students who were chosen randomly in three middle schools in Seung-ju Goon and Goo-rye Goon in Chonnam area, 573 questionaries were used for the final analysis. The results were as follows: In the area of awareness of sexuality, male students regarded sex more positively than female students. It also showed that 19.9% of male students and 17.6% of female students were not aware of their virginity. Male students said they felt sexual impulses most when they saw naked women, and secondly, by sex magazines. This indicates students are motivated mostly by outside influences. There is a considerable gap in the degree of sexual knowledge between male and female according to their school year and father's education level. However, little difference is seen according to student's family circumstance, father's job, and student's religion and vise versa. School restrictions were so severe that 48.2% of boys and 47.1% of girls said that schools paid little attention to their needs. The school restricted rather than permitted relationships with opposite sex. Most of the students revealed a dissatisfaction with the school sexuality education program. Because of confucianism, Korean society has a negative attitude towards sexual activity including sexual education in the schools. 56.8% of male students and 81.4% of females students wanted female teachers to be their sexuality education teachers or advisors rather than male teachers, and 44.8% of male students and 51.2% of females students wanted to receive sexuality education in their Home Economics classes. Materials for sexuality education were considered most effective through videos and audio-visuals. As a result, this survey showed that there appeared to be a great need for a sound, effective, and sensitive sexuality education curriculum in the middle schools for teenagers. It should be conducted in such a way that the teenagers will learn about their sexual needs, their gender differences, and understand and know how to conduct themselves in today's society sexually.

Clostridium difficile in Children: To Treat or Not to Treat?

Shim, Jung Ok The Korean Society of Pediatric Gastroenterology 2014 Pediatric gastroenterology, hepatology & nutrition Vol.17 No.2

Clostridium difficile infection has been increasing since 2000 in children and in adults. Frequent antibiotics use, comorbidity, and the development of hypervirulent strains have increased the risk of infection. Despite the high carriage rates of C. difficile, infants rarely develop clinical infection. Discontinuing antibiotics and supportive management usually leads to resolution of disease. Antibiotics use should be stratified depending on the patient's age and severity of the disease.