파노라마방사선사진상의 이공에 관한 연구

최갑식,배용철,김동윤,손정익 경북대학교 의학연구소 1999 경북대학교병원의학연구소논문집 Vol.3 No.1

The purpose of this study was to evaluate the position and shape of mental foramen in panoramic radiographs. For this study, panoramic radiographs were obtained from the 200 adults and evaluated the position and shape of mental foramen. According to various positional changes in panoramic radiographs of the patients, the author also obtained panoramic radiographs from the 100 adults and then evaluated the positional and shape changes of mental foramen. The following results were obtained: 1. Shapes of metal foramen were observed elliptical(43.3%), round or oval(42.5%), unidentified(7.5%) and diffuse (6.7%) type in descending order of frequency. 2. Horizontal position of mental foramen were most frequently observed at the 2nd premolar area(54.2%), and area between the 1st premolar and 2nd primolar(43.1%), area between the 2nd premolar and 1st molar(2.7%) in descending order of frequency. 3. Vertical position of mental foramen were most frequently observed at the inferior of apex(88.2%), and at apex (9.7%), overlap with apex(1.9%), superior of apex(0.2%) in descending order of frequency. 4. According to various positional changes in panoramic radiographs of the patients, shape changes of mental foramen were more obviously observed at the forward 10mm and chin down 10。 positioned panoramic radiographs. And changes of horizontal and vertical position were observed in similar to compared with normal positioned panoramic radiographs.

제주도 남부 해역의 어류상

최윤,오정규,라혜강 한국어류학회 2003 韓國魚類學會誌 Vol.15 No.2

제주도 남제주군 서귀포시와 재정읍에서 1996년 6월부터 2000년 9월까지 어류를 채집하였다. 본 해역에서 채집 및 서식이 확인된 어류는 모두 14목 60과 100속 140종이었다. 채집된 어류 가운데 우세하게 출현한 분류군은 쏨뱅이목의 양볼락과 11종, 복어목의 참복과 10종, 농어목의 전갱이과 9종 순이었다. 채집된 어류 가운데 매퉁이과의 Synodus hoshinonis 1개체는 우리나라 연안에서 처음 채집된 표본으로 검색표와 함께 형태적 특징을 기재하고, 한국명은 "주홍?? 이라고 명명한다. The fish fauna of southern coastal waters of Jeju-do, Korea, was investigated from July 1996 to September 2000. Specimens collected from two localities were identified into 140 species belonging to 100 genera and 60 families. Among them, the largest group was order Perciformes, comprising 91 species and 34 families, and representing 64.6% of the total number of species. Synodus hoshinonis is redescribed and figured as the first record of the specie from Korea. A key to the species to the family Scynodontidae from Korea is proposed.

전하 제어법을 이용한 압전 액추에이터의 이력저감

정순종,이대수,송재성,홍원표,강은구,최원종 한국공작기계학회 2005 한국공작기계학회 춘계학술대회논문집 Vol.2005 No.-

This paper presents a method to reduce hysteresis in multilayer ceramic actuator by connecting the actuator with a capacitor in a series circuit. The change in hysteresis with respect to the capacitor was examined. 0.2Pb(Mg_(1/3)Nb_(2/3))O₃-0.8Pb(Zr_(0.475)Ti_(0.525)) O₃ ceramic material was used as a piezoelectric material for the actuator. Displacement of the actuator was measured in a capacitive gap sensor measuring system. In case of inserting a capacitor in a total circuit, hysteresis became dramatically decreased, and then finally the hysteresis value can be reduced below 0.2%. It was found in this present study that reducing the hysteresis in the actuator is dependent upon the characteristics of the capacitor in total circuit and also operating frequency

회전자 자속 기준제어를 위한 유도전동기 회전자 자속추정

정삼용,최연옥,조금배 조선대학교 전자정보통신연구소 2000 電子情報通信硏究所論文誌 Vol.3 No.1

In this paper, authors propose a new nonlinear rotor flux observer for rotor field oriented control of an induction motor which is designed based on theory of the extended Luenberger observer(ELO), one of a nonlinear state observer. The proposed rotor flux observer is derived from the 2 phase model of induction motor by the theory of ELO The simulation results taken under the varying condition of rotor resistance and load torque show fast convergence of estimated rotor flux and high performance of IM drive system is acheived 표 experiment.

급성 진행형 국소 신경학적 증상을 보인 쯔쯔가무시병 1예에서 고용량 스테로이드의 사용

최현철,위성헌,이소연,김상일,박성경,정연주,정소령,전정수,강문원 대한감염학회 2002 감염 Vol.34 No.6

완전대혈관 전위의 심방내 교정술 후 추적 관찰

김연우,노정일,허준,윤명자,김호성,최정연,윤용수,양세원,이정렬,김용진,노준량 대한순환기학회 1998 Korean Circulation Journal Vol.28 No.5

결체증식성 법랑모세포증

손정익,최갑식,김동윤 大韓口腔顎顔面 放射線學會 1995 Imaging Science in Dentistry Vol.25 No.1

Desmoplastic variant of ameloblastoma is a new and unusual variant of ameloblastoma with extensive stromal desmoplastic proliferation. The authors experienced a case of desmoplastic variant of ameloblastoma with moderate-defined radiolucency on the right maxillary anterior area in 62-year-old female. As a result of careful analysis of clinical, radiological, histopathological examinations, we diagnosed it as desmoplastic variant of ameloblastoma, and the following results were obtained : 1. Main clinical symptoms were nontender bony swelling with normal intact overlying mucosa on the right maxillary anterior area. 2.Radiographically, moderate-defined, multilocular radiolucency on the right maxillary anterior area were shown, and severe cortical bony thinning and expansion to labial and palatal sides were also observed. And this lesion was shown to be extended to the right nasal cavity. 3.Histopathologically, follicle-like epithelial island with densely abundant collagenous stroma were morphologically compressed.

기분장애를 주소로 내원한 Binswanger씨 병 1례

채정호,전태연,윤수정,최성빈,김대진,김광수 대한생물치료정신의학회 2000 생물치료정신의학 Vol.6 No.1

We report a 70 year-old man with Binswanger's disease associated with mood symptoms. He was apparently well until 15 years ago when the treatment-resistant atypical mood symptoms had been appeared. He showed a fluctuating course in mental disturbance, such as irritable and labile affect, emotional incontinence, and irritable behavior. Two years ago, he was diagnose as hypertension, renal failure, and heart failure. He was admitted to psychiatric ward due to irritable mood, dysarthria, lack of bladder control, gait disturbance, and impulsive behaviors, which had been aggravated during the last 2 months. In physical examination, he had hypertension and both pretibial pitting edema was revealed, and also in neurological examination, exaggeration of deep tendon reflexes and weakness of extremities were found. On mental status examination, he showed irritable and labile mood with mild cognitive disturbances. Brain MRI demonstrated multifocal high signal intensity in periventricular white matter, both basal ganglia, and thalami on the T2 imaging. These findings were compatible with Binswanger's disease with mood symptoms.

어린이의 치과치료시 약물에 의한 진정요법 사용에 대한 실태조사

안소연,최병재,곽지윤,강정완,이제호 大韓小兒齒科學會 2005 大韓小兒齒科學會誌 Vol.32 No.3

진정요법은 소아치과에서 사용하는 보상, 속박, 체계적 탈감작법(말-시범-시행), 친밀감 같은 통상의 방법으로는 환자의 반응이 개선되지 않아 일반적인 치과치료가 불가능할 때 사용하는 행동조절법이다. 최근 국내에서도 진정요법을 이용하는 사례가 증가하는 추세이나 그 기준이나 방법들에 대한 연구는 매우 부족한 상태이다. 미국소아치과학회의 진정요법에 관한 기준이 있기는 하지만 국내의 상황이 미국과 다르므로 한국에서의 연구가 필요하다. 이에 저자는 국내에 거주하고 있는 소아치과의사들을 대상으로 국내 소아치과에서의 진정요법 현황에 대한 실태를 조사, 그 결과를 정리하여 향후 소아치과 임상에서의 진정요법에 대한 임상 기준을 정하는데 기여하고자 국내에 거주하고 있는 대한소아치과학회 회원 573명을 대상으로 진정요법 사용 실태에 관한 설문지를 발송하여 이 중 회신을 한 220명의 설문을 분석하여 다음의 결과를 얻었다. 1. 응답자의 약 66%가 진정요법을 사용하고 있다고 답했다. 진정요법에 관한 이전 연구 결과와 비교해 볼 때, 국내 소아치과에서 진정요법의 사용빈도가 증가하였다. 2. 진정요법으로 치료를 결정 하게 된 요인은 행동조절, 치료내용과 양, 보호자의 요구, 내원횟수, 전신질환의 순서이었다. 3. 진정요법으로 치료받는 환자의 연령은 만 3세가 가장 많았고, 만 4-5세, 만 2세 미만, 만 6-10세, 만 10세 이상의 순서로 조사되었다. 4. 진정요법 시 chloral hydrate는 60-70mg/kg, hydroxyzine은 10-40mg/kg(25mg/kg)을 사용하고 있었고, 경구 투여가 가장 선호하는 약물투여 경로였다. 5. 진정요법 시 사용하는 환자감시 방법은 피부나 손톱색 둥의 관찰을 포함한 환자 평가와 맥박 산소측정기(pulse oximeter)를 통한 환자감시를 선호하는 것으로 조사되었다. 6. 진정요법을 사용하고 있다고 응답한 사람의 약 56%에서 심폐소생술 교육을 받은 것으로 조사되었다. Sometimes the dentists encounter a child who can not be treated with traditional behavior management techniques (for example, reward, restraint, Tell-Show-Do, familialization). In such a case, the dentists use sedation technique. Recently, in Korea, the use of sedation by pediatric dentists is increased. But, the guideline and survey of sedation is very insufficient. Now, we need a survey of sedation practice in Korea. We carried out research on the actual condition about sedation with a questionaire to pediatric dentists in Korea. Followings are the conclusions 1. Sixty six percent of pediatric dentists use sedative agents in their practice. In this study, using sedation shows an increase as compared with the past. 2. Determinative factors of using sedation were orderly behavior management, number of visiting, guidian's opinion, amount of treatment, general condition. 3. Distribution of ages in patients sedated with agents was orderly 3 years, 4-5 years, under 2 years, 6-10 years, more than 10 years. 4. Particular sedative drugs were chloral hydrate 60-70mg/kg, hydroxyzine 10-40mg/kg(25mg/kg), and oral route was the most favorable route. 5. Observation of skin and nail color, pulse oximeter were the most frequently utillized monitoring method during sedation. 6. Only fifty six percent of pediatric dentists complete the cardiopulmonary resuscitation course.

合成洗劑가 빨간집모기의 生態, 生理學的 特性에 미치는 影響

金正和,李炯來,朴垠澈,李容揆,崔觀善 충북대학교 농업과학기술연구소 1995 農業科學硏究 Vol.12 No.2

It is considered a general experience that migration from rural to urban areas will go on in any developing countries pursuing economic development through industralization. In Korea, migration is considered one of the serious socio- economic problems because it has been made excessively fast than any other countries' experiences. The socio- economic problems originates in migration can be classified in two ways ; the one is the overpopulated problems of urban areas and emptied villages problems of rural areas, and the other is the shartage agricultural labor farce problems symbolized by the increasing idle cultivated land. To relieve migration effectively, the developing policies should be converted from pursuing fast industralization and urbanization to balance growth between areas and industries. Moreover problem solving political measure should be converted from partial and corresponding approaches to total approaches containing economic, social and institutional side-view.