서울대학교치과병원 소아치과를 내원한 교정환자의 분포양상에 대한 연구

구용한,현홍근,김정욱,장기택,이상훈,한세현,김종철 大韓小兒齒科學會 2009 大韓小兒齒科學會誌 Vol.36 No.4

과거에 비해 소아 및 청소년기에 교정치료를 시작하는 경우가 증가하고 있으며 따라서 소아치과에서 교정치료가 차지하는 비율 역시 증가하는 추세이다. 이러한 변화에 맞추어 소아치과에 내원하는 교정환자의 분포 양상을 파악하기 위하여 본 연구를 시행하였다. 2006년 1월부터 2008년 12월까지 서울대학교 치과병원 소아치과를 내원한 환자 중 교정 진단 받은 792명을 대상으로 조사를 진행하였으며 다음과 같은 결과를 얻었다. 1. 교정 진단을 받은 환자의 연령 분포는 8세가 22%로 가장 많았고 7세(19%), 9세(16%) 순서로 나타났다. 2. 골격 분포는 골격성 1급 부정교합이 52%로 가장 많았고 3급(29%), 2급(19%)순서로 나타났으며 연령이 낮은 경우 3급 부정교합 환자의 비율이 높은 경향을 보였다. 3. 총 792명의 환자 중 28%인 218명에서 전치부 반대교합을 보였으며 연령이 낮은 경우 그 비율이 높은 경향을 보였다. Distribution of orthodontic patients in pediatric dental clinics has increased recently. So it is worth to study about the present status of orthodontic patients in pediatric dental clinics. The purpose of this study was to recognize the characteristics and orthodontic patterns of orthodontic patients in pediatric dental clinics. The material consisted of distribution and orthodontic analysis records of 792 new patients in the department of pediatric dentistry, Seoul National University Dental Hospital, from 2006 to 2008. Results were as follows 1. In age distribution, 8-year-olds group comprised 22%, 7-year-olds 19%, 9-year-olds 16%, 10-year olds 15%, 11-year-olds 11%, and other age groups comprised 18%. 2. In skeletal patterns, skeletal class Ⅰ patients comprised 52%, class Ⅱ 29%, and class Ⅲ 19%. 3. In vertical facial types mesofacial comprised 41%, brachyfacial 35%, and dolichofacial 24%. 4. Out of 792 patients 218 patients(28%) showed anterior cross-bite, and the occurrence ratio of anterior cross-bite increased as the age decreased.

수직적 안모형태와 치아성숙도의 상관관계에 대한 연구

구용한,현홍근,김정욱,장기택,이상훈,한세현,김종철 大韓小兒齒科學會 2010 大韓小兒齒科學會誌 Vol.37 No.1

본 연구는 수직적 안모형태와 치아성숙도의 관계를 평가하고 이러한 연관성에 대한 사춘기 성장의 영향을 평가하기 위한 것이다. 이번 연구를 위해 7세에서 9세, 13세에서 15세 환자 1306명을 Ricketts의 VERT index를 이용하여 수직적 안모 형태를 분류하였고 환자들의 치령을 Demirjian법으로 평가하여 다음과 같은 결과를 얻었다. 1. 모든 군에서 치령이 역령과 비교 시 통계적으로 유의한 수준에서 크게 측정되었다. 2. 사춘기 연령군에서 brachyfacial type의 경우가 dolichofacial type 보다 치아성숙도가 크게 나타나는 경향을 보였다. 여성의 경우는 통계적으로 유의성있게 차이가 나타났으며, 남성의 경우는 통계적 유의성은 보이지 않았다. 3. Brachyfacial type의 경우 사춘기전 군들과 비교 시 사춘기 군들에서 치아성숙도가 유의성있게 높게 나타났으며, dolichofacial type의 경우는 연령층간 치아성숙도의 차이를 보이지 않았다. The purpose of this investigation was to study the relationship between vertical facial pattern and dental maturation in children in pubertal and pre-pubertal periods. The material consisted of lateral head films and panoramic radiographs of 1306 patients. The subjects were selected according to Ricketts's VERT index and other including criteria. These subjects were divided by VERT index to brachyfacial group and dolichofacial group. In each selected subject, dental age was determined according to Demirjian's dental maturity score. All subjects were distributed according to age, vertical facial type and sex, mean and standard deviation of chronological age, dental age and age difference were determined in each group. And the data were analysed to find the difference of tooth maturation by facial pattern. Findings of this study include: 1. In all groups, dental age was determined higher than chronological age in statistically significant level. 2. Compared by vertical facial pattern, in pubertal age groups, it seems that subjects with brachyfacial type presented the tendency to have an advanced dental maturation, only in female group. 3. Compared by pubertal period, brachyfacial groups presented more advanced dental maturation in pubertal groups than pre-pubertal groups.

유한요소법을 이용한 유도전동기 d-q 모델의 회로정수 해석

구태만,최종선 울산대학교 2000 공학연구논문집 Vol.31 No.1

본 논문에서는 3상 유도전동기의 d-q등가모델의 회로정수를 구하는 한 방법을 제시하였다. 자기해석은 철심과 슬롯 형상을 정확하게 반영할 수 있는 유한 요소법을 이용하였고, 철심의 자기포화현상도 고려하였다. 제시된 방법은 반복계산을 통하여 회로정수를 구하는 방법에 비해 계산시간을 절약할 수 있다. 그리고 산출된 각 회로정수는 전류의 변화에 따라 다른 값을 가짐을 확인할 수 있었다. This paper presents a method for determining of the equivalent d-q model parameters of three-phase squirrel cage induction motors. The method is based on the use of a finite-element field calculation which enables the precise slot geometry to be modelled accurately, and includes the effects of magnetic saturation of iron core. The proposed mothod can reduce computational costs compared with the method that needs the iterative field analysis to obtain the parameters. It is verified that the circuit parameters are shown as functions of the current.

外傷性 腎 損傷의 樣相과 原因

薛鍾求,姜舜求 충남대학교 의과대학 지역사회의학연구소 1991 충남의대잡지 Vol.18 No.2

Traumatic renal injuries, with other multiple organ system injuries, are gradually increased due to various causes such as increased traffic accidents, industrial works, sports and violence, and their degrees of injuries are varieable. We reviewed 207 traumatic renal injuries at the Department of Urology, Chungnam National University Hospital during the period from January 1985, to August 1991, with the literatures as follows. 1. Most of the cases(152 cases, 68.6%) were distributed in 3rd to 5th decade, and more prevalent in male(male to female ratio was 4.3:1). 2. Main causes of renal injuries were traffic accident(118 cases, 57.0%), fall-down(48 cases, 23.2%), assault (33 cases, 15.9%), and stab (8 cases, 3.9%). And vulnerable age group to trauma according to causes were 3rd decade in traffic accident, 5th decade in fall-down, 3rd decade in assault, and 3rd and 4th decade in stab. 3. Incidences of associated injuries according to causes were 61.0%(72 cases) in traffic accident, 39.6%(19 cases) in fall-down, 37.5%(3 cases) in stab and 36.4 %(12 cases) in assault. But multiplicities in combined injured patients(106 cases) were 2.4 in fall-down, 2.1 in traffic accident, 2.0 in assault and stab repectively in its frequency. 4. Preexisting renal diseases were hydronephrosis(4 cases), horse-shoe kidney(2 cases), crossed ectopic kidney(1 case), renal cell carcinoma(1 case), staghorn stone(1 case) and ureteral stone(1 case). 5. Of 207 renal injuries, minor injuries were contusion(148 cases), superficial cortical laceration(7 cases), subcapsular hematoma(2 cases), and major injuries were deep corticomedullary laceration(21 cases), shattered kidney(14 cases), pelvis tearing(8 cases) and vascular injury(7 cases). 6. Hematuria was seen in all injured cases, but gross hematuria in minor injury was seen in 41.2%(49 cases), and, in major injury, was seen in 74.0%(37 cases). 7. Diagnostic procedures in minor injury were DIP(142 cases), DIP and CT(9 cases), CT only(2 cases), and DIP and renal angiography(2 cases), but in major injury, were DIP only(19 cases), DIP and CT(19 cases), DIP and renal angiography(7 cases), CT only(2 cases), and DIP, CT and renal angiography(3 cases). 8. Types of management for renal injury in minor injury were conservative(154 cases), primary repair(3 cases), and in major injury, primary repair(19 cases), nephrectomy(18 cases) and conservative(13 cases). 9. Complications were developed in 10 cases(5.0%) of 201 treated cases (with exception for 6 cases who were dead with other causes of death in renal contusion with multiple injuries) such as bleeding(5 cases), retroperitoneal urinoma(2 cases), infection(1 cases), hypertension due to AV fistular(1 case), and uremia(l case) in whom received aorto-renal bypass procedure.

표재성 방광 이행상피세포암에 있어서 방광내 항암제주입요법 밀 면역요법

설종구,신보현,하용원,김윤종,노안식,손성용 충남대학교 의과대학 지역사회의학연구소 1999 충남의대잡지 Vol.26 No.2

Intravesical chemotherapy and immunotherapy will commonly eradicate residual papillary transitional cell carcinoma or carcinoma in situ(CIS) and clearly reduce the short-term incidence and rate of tumor recurrence. So I reviewed the effects and complications of different therapeutic agents(thiotepa, mitomycin-C, epirubicin, adriamycin, bacillus Cal mette-Cue'rin(BCG)) in superficial bladder cancer confirmed with histopathology, with the literatures. Bladder cancer were recurred more commonly in multiple tumors(50.6-56.3%), high grade tumors(52.6%) rather than in single(30.9%) and low grade(31.6%). And recurrence rates according to therapeutic agents were 83.3% in mitomycin-C, 71.4% in thiotepa, 50.0% in epirubicin, 46.6% in adriamycin and 32.6% in BCG. But incidence of complications were highest in BCG(50.5%). So sufficient preventive manuevers should be needed before intravesical theraphy, especially in BCG immunotherapy.

마분말을 첨가한 국수의 특성

정구민,권정숙 安東大學校 農業科學技術硏究所 1998 農業科學技術 硏究論文集 Vol.5 No.-

마첨가 국수의 개발을 위해 밀가루에 열풍건조마가루와 냉동건조마가루를 각각 2, 5, 10% 첨가하여 건국수를 만들고, 이들의 물리적 성질과 조리성질을 조사하였으며 관능검사를 실시하였다. 밀가루에 마가루를 첨가하면 국수의 폭은 0.5-4.8% 두께는 8.8-20.8% 줄어들었다. 국수의 색은 마가루의 갈변으로 다소 누렇게 변하였으며 첨가량이 클수록 심하였다. 마첨가로 국수의 강도와 휨성은 증가하였으며, 이에 따라 마국수는 밀가루 국수보다 취급이 용이할 것으로 생각된다. 국수의 조리 후 무게증가량과 조리부피는 마첨가량에 따라 별 차이를 보이지 않았으나, 조리손실은 마첨가 국수가 1.21-1.49g/25g으로 밀가루 국수의 1.15g/25g 보다 높았다. 이는 마의 수용성 식이섬유 함량(4.74-4.96%)이 밀가루(2.69%)보다 높기 때문일 것이다. 관능검사 결과, 마가루를 2-5% 첨가한 국수가 5.4-6.4점을 얻어 밀가루 국수의 5점보다 높았다. Dried noodles were prepared by blending wheat flour with 2, 5, 10% hot-air dried Chinese yam powder (HD) and freeze dried Chinese yam powder (FD), respectively. Adding yam powder decreased width and thickness of noodles by 0.5-4.8% and 8.8-20.8% respectively. Color of noodles were darkened with addition of yam powder due to probably enzymatic browning. Adding yam powder increased strength and flexibility of noodles. Weight gain and volume of noodle after cooking were not affected by adding yam powder, but cooking loss was increased from 1.15g/25g for wheat noodle to 1.21-1.47g/25g for yam-added noodles because yam powders contain more soluble dietary fiber(4.74-4.96%) than wheat flour(2.69%). In sensory evaluation, noodles added with 2-5% HD and FD scored 5.4-6.4 point whereas wheat flour noodle was 5.

고환절제 후 백서의 복측 전립선에서의 병리학적 변화에 관한 연구

설종구,윤율로,이중화 충남대학교 의과대학 지역사회의학연구소 1994 충남의대잡지 Vol.21 No.2

The regulation of cell death and renewal is controlled by androgen in rat ventral prostate. So many studies on androgen block effects has been performed to understand the hormonal control in prostatic epithelial cell. Castration of rat results in activation of programmed cell death of ventral prostate. This response is related to activation of the calcium-magnesium dependent endonuclease. To observe the changes of regression of prostatic gland following androgen withdrawal, histologic examination was performed in rat ventral prostate after castration. The level of serum testosterone was rapidly decreased after castration from 5.9 ng/ml in normal rat to 1.6 ng/ml at 3hr castration. After 6hr postcastration its level was 0.01 ng/ml or below. The pathologic changes of ventral prostate was also observed after castration. Apoptosis in the ventral prostate appeared initially at 24hr postcastration but maximal apoptosis was noted at 6days. We confirmed the apoptotic bodies in light microscopic examination be electron microscopic observation.

九州의「지역 생활조직」

이종구 서울대학교 국제지역원 1993 국제지역연구 Vol.2 No.3

九州(큐슈)의 도시에 있는 「지역생활조직」에 대한 조사를 통해 고도성장에 따른 급속한 사회이동 과정에서 해체되어 온 거주공간을 단위로하는 「공동성」의 복원이 사회적 과제로 등장하고 있는 모습이 관찰되었다. 소학교구를 단위로하여 조직된 지역발전을 위한 「협의회」가 수행하는 각종 주민조직의 통합 기능이 부각되고 있다. 이는 지연의 통합효과가 감소함에 따라 생활과정에서 새로운 공동서의 기반이 모색될 필요가 있기 때문이다. 「공동성」의 내용 가운데는 거주 지역 단위의 이익을 넘어서는 새로운 보편성이 포함되어 있는 모습에 주목할 필요가 있다.즉 「복지」와 「환경」이라는 키워드에는 지역사회를 포괄하고 있는 상위의 사회적 단위인자치체·국가의 생존과도 밀접한 관계를 가지고 있다. 이러한 사회적 가치의 추구는 자치체 수준의 의사결정과 밀접하게 결부되어 있다. 내부적으로는 국제화 외부적으로는 지역경제통합이 부각되는 가운데 지방의 주체성이 강조되는 방향으로 사회의 재조직화가 진행되는 현상에 주목할 필요가 있다. This field research has been organized forthe purpose of providing first-hand information about the urban neighborhood associations of kyushu region in Japan. The role of neighborhood association as an agent of social integration has been remained effective despite of the rapid social mobility and the apathy of the young generation towardlocal community. At primary school district level, community leaders emphasized the need oforganizing welfare system based in mutual help and and voluntary garbage dispose system. In fact, these functional requirements cannot be met without the cooperation of the neighborhood association. The community center established at the primary school district level has provided the recurrent education programme and the place for the activities of the various organizations including neighborhood association. The local authorities have supported the community center expecting the effect of social integration based on the sense of community. In these efforts, we can see the trend toward the reorganization of social relations and the redefinition of the autonomous local identity. But this emphasis upon the of the local identity can be interpreted as the other side of the globalization, which has been the social consensus in Japan since the 1980s.

가토에 있어서 편측 요관 폐색시 환측, 반대측 요관에 대한 변화 : 조직학적 소견을 중심으로

설종구,김용웅,육승모,노안식,김홍식,김상현,이충식 충남대학교 의과대학 의학연구소 2003 충남의대잡지 Vol.30 No.1

This study was designed to clarify histological changes in the experimental rabbit ureter after unilateral prartial or complete ureteral obstruction. A total of 20 adult white rabbits were divided into 4 subgroups in the partial obstruction followed by 2 weeks, partial obstruction followed by 4 weeks, complete obstruction followed by 2 weeks, complete obstruction followed by 4 weeks. The normal control group consisted of 5 adult white rabbits. The H & E stain. light microscopy were used. Abnormal histological fingings were showed in ipsilateral ureter of all subgroups; dilatation of ureter, epithelial cell atrophy or loss, interstitial fibrosis, interstitial inflammation. These findings were most severe in the complete-obstructed ureter for 4 weeks. There were no significant changes in contralateral ureter of all subgroups. Despite of progressive histological changes in ipsilateral ureter no abnormal findings were showed in contralateral ureter. We suggest that long term experimental investigation for histological changes in ipsilateral ureter and compensatory changes in contralateral ureter should be done.

일본의 고령화와 노동문제

이종구 서울대학교 국제지역원 1995 국제지역연구 Vol.4 No.2

이 논문에서는 고령화가 일본의 노사관계에 미치는 영향을 기업, 정부, 지방자치체의 대책을 중심으로 살펴보았다. 기업의 수준에서는 연공적 질서가 능력주의적 질서로 대체되어가는 셩향이 확인되고 있었다. 그러나 종업원의 충성을 확보하기 위하여 사내 복리후생의 측면에서는 퇴직자에 대한 의료보험의 적용, 기업연금제도와 같이 전생애에 걸친 기업의 서비스가 강조되고 있었다. 1986년부터 시행된 '高年齡者雇用安定法'에 의해 정부와 지방자치체는 기업이 정년을 60세까지 연장하고 65세까지 '계속고용'을 실시할 수 있도록 유도하는 행정지도 및 유인제공에 중점을 두고 있었다. 공적 연금의 수급연령을 단계적으로 현행 60세에서 65세로 높이는 방향으로 1994년에 연금제도가 개혁되었다. 여기에는 취로기회의 제공을 고령자 대책의 중점으로 간주하는 정책적 구상이 있다. 따라서 재취직을 촉진하가 위한 직업안정서비스와 직업훈련에 대한 지원이 강조되고 있다 그러나 기업의 종업원에서 주민으로 돌아 온 고령자가 생활하는 지역사회 수준의 대책을 정비하기 위해 시민과 각계 유관단체가 협력적 관계를 형성할 필요가 있다. 총체적으로 말해 현재는 '생산성'에서 '생활의 질'로 사회적 우선 순위의 전환이 필요한 시점이라고 할 수 있다. This paper has analyzed the impact of aging on the industrial relations in Japan. The focus of the analysis has been laid upon the responses and policy measures of the enterprises, central and local government. In the enterprises, the Japanese style seniority(nenko) system has been substituted by the merit system emphasizing ability and performance of the individual. But they have begun to extend the beneficiaries of the enterprise welfare system for the purpose of securing loyalty. Retired employees can be covered by the enterprise medical insurance service. They also try to introduce enterprise pension system. According to the emplyment security law for the aged persons enforced since 1986, central and local government have provided the guidances and incentives for the enterprises, so as to extend the retirement age unto 65, from the age limit of 60 at present. Linked with this, public pension system has been changed in 1994, so that the beginning age of receipt should be extended gradually unto 65, from that of 60 at that time. In short, Japanese policy makers emphasize the retraining and job security for the aged. The conditions and environments of community should be rearranged by the common efforts private and public sectors, so as to accommodate the age returned from the life world of enterprise. In sum, they are facing the turning point of substituting 'quality of life' for the 'pursuit of productivity', as a social goal of priority.