유성견에서 교정적 치아이동에 따른 치주조직 변화에 관한 연구

강남용,윤영주,김광원 대한치과교정학회 1997 대한치과교정학회지 Vol.27 No.4

교정력에 의한 치주조직의 변화를 알아보기 위해 성장중인 유성견에서 단기간의 교정력이 가해진 직후와 보정기간 동안 일어나는 치아와 골조직의 변화양상을 조직학적으로 관찰하였다. 본 연구에서는 생후 4-6개월된 유성견 3마리를 이용하여, 각 실험동물의 하악 좌측 견치와 제1대구치는 실험군으로, 우측 견치와 제1대구치는 대조군으로 하였다. 하악견치와 제1대구치에 치관사이에서 최초 교정력이 200mg이 되도록 0.018"X0.022" S.S closed coil spring(Dentarum Co)의 길이를 조절하여 치아에 결찰시키고 장치는 1주간 활성화기간을 갖는 후 14일, 28일의 보정기간을 거쳐 희생시켜 하악골을 절제하여 통법에 따라 H-E염색군, 연마표본군, ALP염색군, TRAP염색군등으로 나누어 염색을 시행하여 다음과 같은 결과를 얻었다. 1. 교정력을 종료한 직후 견인측 치주인대 폭경이 대조군보다 더 증가된 상을 보이고, 반대로 압박측은 폭경이 감소된 소견을 보이며 치주인대의 섬유들이 치축에 수직으로 압축되며 초자양 변성이 관찰되었다. 대조군에서 관찰되는 다수의 규칙적인 배열을 보였던 조골세포가 견인측에서는 간혹 관찰되었다. 2. 교정력 종료후 14일 보정기간 경과군 치주인대내 섬유아세포들이 증식되어 초자지질대가 회복되는 소견이 관찰되었고 견인측 치주인대의 폭경이 교정력을 종료한 직후군보다 감소하였으며, 소수의 ALP(+) 조골세포와 함께 신생골형성도 관찰되었다. 압박측 치주인대의 폭경은 교정력을 종료한 직후군보다 다소 증가하였으며 골흡수도 증가되었다. 3. 교정력 종료후 28일 보정기간 경과군 치주인대섬유는 정상적으로 회복되어 대조군과 유사한 양상을 보였고 견인측 치조골내 다수의 ALP(+)조골세포와 활발한 신생골형성이 관찰됨과 더불어 압박측 치조골은 다수의 TRAP(+)파골세포와 왕성한 골흡수양상을 보였다. 이상의 결과를 종합해 볼때 교정력을 7일간 가한 직후 유리질화가 관찰되었고 교정력을 종료후 28일 보정기간 경과군에서 압박측에서는 파골세포 견인측에서는 조골세포의 활성과 함께 각각에서 왕성한 골 흡수와 신생골형성이 관찰됨을 알 수 있다. For orthodontic tooth movement, optimal orthodontic force should be maintained without periodontal breakdown and alveolar bone should be remodeled physiologically. Therefore, To obtain proper occlusion through tooth movement within alveolar bone, we should know the biomechanics of teeth and supporting tissues. The present study was performed to observe histologic changes of periodontal tissue immediately after application of orthodontic force and during the retention period in growing young adult dogs. In this study, of same animal. The 0.18"X0.22" stainless steel closed coil spring(Dentaurum Co.) was ligated on the experimental teeth at initial 200gm-force from mandibular canine to 1st molar. The animals(4 to 6 months aged young adult dogs)were sacrificed on 0, 14, 28 days after the finish of appliance activation, and the tissue samples were divided into himatoxylin-eosin(HE) staining section, groud section, alkaline phosphatase(ALP) staining section, and tartrate-resistant acid phosphatase(TRAP) staining section. Thereafter, the proparations were examined under light microscopy. The following results were obtained: 1. Immediately after the finish of appliance activation, the periodontal space was increased in tension side, but decreased in pressure side compared to that of control. The hyalinized zone was also observed in the periodontium. 2. After the 14-day retention, peridontal space was decreased in tension side ans slightly increased in pressure side compared to that of immediately after the finish of appliance activation. The hyalinized zone was repaired and a few osteoblasts showing slightly new bone formation were seen. Osteoblasts were scarcely observed along the alveolar bone. 3. After the 28-day retention, peridontal fibers are normally repaired. A lot of TRAP(+) osteoclasts and increased alveolar bone resorption were observed in pressure side, and AP(+) osteoblast and increased new bone formation were observed in tension side.

40세 이하 관상동맥 질환자에서 장기적 임상 관찰

이승욱,정명호,박종철,박형욱,조상희,김원,김계훈,이상현,강경태,조장현,김남호,김건형,안영근,조정관,박종춘,강정채 全南大醫大 2001 전남의대학술지 Vol.37 No.2

남성화를 보이는 여성에서 발견된 난소의 Steroid Cell Tumor 1예

조인호,정대훈,박영미,서영진,손영실,정철회,강영미,정수전,김영남,이경복,성문수,김기태 인제대학교 2006 仁濟醫學 Vol.27 No.-

Steroid cell tumor is a rare ovarian sex cord-stromal tumor which accounts for 0.1% of all ovarian tumors. Until now, only 4 cases have been reported in domestic literatures. Steroid cell tumor often secrets testosterone and presents virilization in adult women or precocious puberty in children. Treatment is often performed by surgical removal, adjuvant chemotherapy and radiation, but completely accepted treatment was not existed. We experienced a case of steroid cell tumor, which was manifested by typical virilization in a 43-year old patient, who was previously performed hysterectomy and unilateral oophorectomy. So, we present with a brief review of the literatures.

의료 화상을 위한 전처리 필터들의 특성에 관한 연구

강명아,최종주,정종필,정채영,정남채 조선대학교 기초과학연구소 1997 自然科學硏究 Vol.20 No.1

There has been no fixed rule of pre-processing course required to do image processing that it was barely possible to find the proper pre-processing course, only to process with experience till now. In this paper, lots of application method of pre-processing algorithm, only available by the non-typified and experiential method, shall quantify and the algorithm method of algorithm according to the rule shall calculate the frequency of the value of each pixel gray level and the histogrm of the image. And then average it to all pixel number and finally set a high-ranking or optional % standardized by the average value in teh standard value. The result of a experiment showed the Median filter is superior to the Mean filter in all image of the smoothing filter. The sobel filter extracted feature. The laplacian filter presented sectional feature which not showed in original image.

Mobile IPv6 환경에서 신뢰성 있는 TCP 프로토콜의 성능향상에 관한 연구

姜昊錫,金南昌,沈永喆 弘益大學校 科學技術硏究所 2003 科學技術硏究論文集 Vol.14 No.-

There are three methods for improving performance of TCP Protocol in the Mobile IPv6 Environment. Those methods are link layer protocol method, end-to-end protocol method and split-connection method. It's a link layer protocol method among these to be applied without any changes of wired network environment. Snoop module is one of link layer protocol methods for improving performance of TCP Protocol. We apply snoop module to Mobile IPv6 and improve Mobile IPv6 with snoop module by changing some feature of Mobile IPv6 which reduces its performance. Based on these improvement of Mobile IPv6, We simulate it by ns2 and mobiwan comparing original Mobile IPv6 and our Mobile IPv6 with snoop module. Simulation of ours is better than original.

NMOS 소자의 Ta-Ti 게이트 전극 특성

강영섭,서현상,노영진,이충근,홍신남 한국항행학회 2003 韓國航行學會論文誌 Vol.7 No.2

본 논문에서는 오래 전부터 NMOS의 게이트 전극으로 사용된 폴리실리콘을 대체할 수 있는 Ta-Ti 합금의 특성에 대해 연구하였다. 실리콘 기판 위에 열적으로 성장된 SiO₂위에 Ta과 Ti의 두 타깃을 사용하여 co-sputterring 방법으로 Ta-Ti 합금을 증착하였다. 각각의 타킷의 100W 의 sputtering power 로 증착하여 시편을 제작하였다. 또한 비교 분석을 위하여 Ta를 100W의 sputtering power로 증착한 시편도 제작하였다. 제작된 Ta-Ti 합금 게이트의 열적/화학적 안정성을 검토하기 위하여 600℃에서 급속열처리를 수행한 결과 소자의 성능 저하는 나타나지 않았다. 또한 전기적 특성 분석 결과 Ta-Ti합금은 NMOS 에 적합한 일합수인 4.13eV를 산출해 낼수 있었고, 면저항 역시 폴리실리콘에 비해 낮은 값을 얻을 수 있었다. In this paper, characteristics of Ta-Ti alloy was studied as a gate electrode for NMOS devices to replace the widely used polysilicon. Ta-Ti alloy was deposited directly on SIO_2 by a co-sputtering method using two of Ta and Ti targets. The sputtering power of each metal target was 100W. To compare with Ta-Ti, Ta deposited with a 100W sputtering power was fabricated as well. In order to investigate the thermal/chemical stability of the Ta-Ti alloy gate, the alloy was annealed at 600℃ with rapid thermal annealer. No appreciable degradation of the device was observed. Also the results of electircal analysis showed that the work function of Ta-Ti metal alloy was about 4.1eV which was suitable for NMOS devices and sheet resistance of alloy was lower than that of polysilicon.

産業勤勞者의 健康增進 및 行態에 관한 關聯要因分析

姜永佑,南喆鉉 韓國保健敎育學會 1997 보건교육건강증진학회지 Vol.14 No.2

From September 2, 1995 through October 31, this questionnaire was made by the 1,200 industrial workers who work for 15 enterprises of 5 types of business. And it was for helping to devise a policy and to develop a program for industrial workers' health promotion by understanding the consciousness behavior level of industrial workers in our country and the related factors which are under the influence of it and health promotion behavior. The summary and conclusions are as follows. 1. In health promotion score level by related factors, the health diagmosis level score was 7.37(31.9/100) of the perfect score 9, nutrition level score was 7.00(77.8/100), health education behavior level score was 6.00(66.7/100), exercise behavior level score was 6.01(66.8/100), occupational disease knowledge level score was 6.00(66.7/100). 2. Health diagnosis behavior level was significantly high when the age is older, when the occupation term is longer, when the economic status is better. And wjem tje satosfoed degree for vocational aptitude, working environment, and the education contents. 3. Nutrition (dietary habit) status level was high in men, in the age group of 40 over, in the group of having their spouse, in the group of being paid over one million won a month, in the upper economic classes(P<0.001). It was also high in graduates middle school and in daytime workers(P<0.05). 4. Health education behavior level was high in the older ahe hroup, in a single life (separation by death, divouce, separation) and in the longer occupation term(P<0.001). 5. Exercises behavior level was high in men, in the workers who are paid 500∼990 thousand won a month, in the better economic classes(P<0.01). 6. Knowledge level on an occupational disease was high in men, in the older age group, in the group of having a spouse, in the workers who are paid 500∼990 thousand won a month, in group of having a longer occupation term, and in the residents living not in a large city(P<0.01). 7. When health status was higher, health promotion behavior level, health diagnosis (P<0.001), nutrition(P<0.05), health education behavior(P<0.05), exercise behavior (P<0.01)and the knowledge level on an occupation disease was high. 8. The main factors which are under the influence on the degree of practicing healthy life were the level of knowledge and behavior, sex, his/her health status, and the satisfied degree of working environment. These variables could explain it 18.0%. 9. The factors which are under the influence on health promotion behavior and behavior levels were the variables of the satisfied degerr of education contents, sex, health knowledge, economic status, health status, occupation terms, monthly income, working tiredness. These variables could explain it 21.3%. By these results, it is important for industrial workers' health promotion to level up the health diagnosis behavior, dietary habit considering nutrition, behavior on health education, behavior for exercise, and knowledge on an occupational disease. Especially we should develop the proper program considered sex, health status, satisfied degree of working environment and education contents, economic status, eccupation terms, knowledge on health, and behavior level. Because health promotion business gies in gear with productivity promotion.

남·여 중등학생의 식사관리에 대한 인식과 참여 실태 조사

강영희,김영남 한국 가정과 교육 학회 1999 한국가정과교육학회지 Vol.11 No.2

The Purpose of thin study was to find out the participation and perception on meal management of the junior and high school students and their fathers. Total of 446 junior and high school students in Pohang and Youngduk in Gyeongbuk were participated in the questionnaire survey. Among the 446 questionnaires collected 385 questionnaires were analyzed for this study. The results of this study were summarized as follows. 1, Students participation frequency on meal management was quite insufficient, once or twice a month in average, and was differed by sex that female students participate more frequently than males. High school male students who have never been taught the home economics course showed the lowest participation. 2. Among the meal planning, grocery shopping, cooking, and dishwashing, 60% of the students chose cooking as the moat preferred work. As whole, they chose the meal planning as the most difficult work, but high school male students chose cooking as the most difficult work. 3. Most of the students wanted to learn more about food purchasing, meal planning, cooking skill, table setting, food storage and table manners, the priority was given to table manners and cooking skill. 4. Participation score on meal management of student' fathers was even lower than that of students, only a little more often than once or twice a year. Because son usually identifics himself with his father, father should participate more often than now. 5. As for responsibility of meal management in the future, 78,2% of the male students and 91.8% female students answered that husband and wife must share the responsibility together when both husband and wife have jobs.

융모성 질환의 임상적 연구

남상륜,손영선,이영일,노흥태,강길전 충남대학교 의과대학 지역사회의학연구소 1989 충남의대잡지 Vol.16 No.2

Seventy nine cases of trophoblastic disease were analyzed at the Department of Obstetrics and Gynecology, Chungnam National University from January, 1985 to October, 1989. The results are as follows: 1. Incidence of trophoblastic disease was one per 31.8 deliveries(3.15%), and it was pathologically consisted with partial mole(27.8%), complete mole(45.6%), invasive mole (17.7%), choriocarcinoma(8.9%). 2. Age group of 26 to 30 was found most frequent(40.5%) and primipara was the most frequent group(43.0%). There was no increase for the persistent disease according to age and para. 3. Clinical manifestations were vaginal bleeding(91.1%), the most common, nausea and vomiting(20.3%), abdominal pain(10.1%) and etc. 4. Molar pregnancies with excessive uterine enlargement were found in 35.6% and were at increased risk for the persistent disease. 5. Antecedant pregnancies prior to trophoblastic disease were abortion(43.0%), term pregnancy(16.5%) and molar pregnancy(16.5%). 6.β-hCG concentration before November, 1986 was significantly lower than after ten. And the first postevacuation β-hCG level was increased in cases of the persistent disease. 7. The treatment regimens in molar pregnancies were suction curettage with prophylactic Act-D(41.4%) and without Act-D(43.1%), hysterectomy with Act-D(13.8%), and hysterotomy(1.7%). There was no difference in complication persistent disease between with and without prophylactic chemotherapy. 8. Non-metastatic and metastatic low risk patients were treated with hysterectomy with or without MTX-CF(66.7%), curettage with MTX-CF, Act-D or MAC(33.3%) to attain remission without failure. All metastatic high risk patients were treated with hysterectomy with 1-6 courses of MAC triple chemotherapy except 1 case of death from respiratory failure and 1 lost case. 9. Side effects after chemotherapy include gastrointestinal symptoms(91.1%), fever(57.8%), leukopenia(49.0%), hepatotoxicity(46.9%), stomatitis(40%), alopecia(28.9%), thrombocytopenia(15.3%) and etc, in order of frequency.

태풍 매미의 강풍에 의한 부산지역의 피해사례

강현진,김남영,윤성원 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.2(구조계)

A powerful typhoon Maemi pounded South Korea and causing significant property damage. Gale winds that registered velocities of 60 meters per hour was the highest in Korean history, Typhoon Maemi hit the Korean Peninsula and caused floods, landslides and power outages mostly in southern and eastern coastal regions. Therefor, this paper investigated the damage pattern of buildings occurred by the strong wind in Pusan. The range of investigated buildings are mainly apartment in the region of Youngdo-gu in the seaside and Buk-gu near the Nakdong River.