우관상동맥 개구부 완전 폐쇄가 동반된 대동맥 판상부 협착증 1례

임상현,김종진,김희열,진승원,전희경,노태호,채장성,김재형,홍순조,최규보,윤정섭,김치경 대한순환기학회 2000 Korean Circulation Journal Vol.30 No.4

플레이트거더의 전단강도

최취경,김태영,서성연,김정석,김상섭,김규석 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.1(구조계)

In the design of plate girder web panels, it is required to evaluate accurately the elastic buckling strength under pure shear. Whether or not the post-buckling strength is accounted for. Currently. Elastic shear buckling coefficients of web panels stiffened by transverse intermediate stiffeners are determined by assuming conservatively that web panels are simply supported at the juncture between the flange and the web. Although the notion of the real boundary condition at the juncture of the web and flanges to be somewhere between simple and fixed has been recognized from early days, the boundary condition has been conservatively assumed. Mainly due to lack of means to evaluate it in a rational manner. In this paper. A series of numerical analyses based on a three-dimensional finite element modeling is carried out to investigate the effects of the geometric parameters on the boundary conditions at the juncture between the flange and the web.

혈액 투석 환자에서 중심정맥 협착에 대한 스텐트 삽입술 : Wallstent Placement

임대승,노상필,이유선,정승현,김보영,이정우,강정아,김정희,이민수,정준용,최시완,정진옥,성인환,이강욱,신영태 충남대학교 의과대학 의학연구소 2002 충남의대잡지 Vol.29 No.1

Stenosis of central vein is a common complication arising after percutaneous subclavian vein catheter insertion performed for temporary vascular access in chronic renal failure patients undergoing hemodialysis. There are several treatment methods for the condition like percutaneous angioplasty(PTA), stent insertion, and surgery, but recent trend is toward PTA and stents. Among the patients diagnosed with chronic renal failure from March 1993 to May 2002 and undergoing hemodialysis through AV fistula, the 14 Patients in whom central vein stenosis arose were selected for the study. A total of 28 percutaneous interventions(5 PTA and 23 stent placement) were performed, and restenosis rate and the time taken till the restenosis in de novo lesions and instant lesions were compared. All 28 cases were operated successfully. The 14 cases that received both anigioplasty and stent placement initially. (de novo lesion : 14 cases), Among the 10 cases with de novo lesion that followed up more than 1 year, 3 cases are currently undergoing hemodialysis without restenosis, and the remaining 7 cases have recurred stenosis with the mean time to restenosis of 10.9 months. In the 7 cases in whom stenosis recurred, 11 interventions were done(instent lesion: 11 cases). 4 of these were using only ballon angioplasty with 100% restenosis rate and the mean time of 3 months until restenosis. The remaining 7 cases were using both balloon angioplasty and stent placement, also with 100% restenosis rate but with the mean time of 12 months until restenosis, which was later than the group receiving only balloon angioplasty. In treating the patients with central vein stenosis, stent placement seems to be more advantageous over PTA in terms of restenosis rate and the mean duration of patency. In the case of instent lesion, inserting the stent for the second time after stenosis recurred lengthened the duration of patency compared to performing balloon angioplasty alone.

역사적 도심지구내 터줏대감의 정주의식에 관한 연구 : 청주시 성안동·중앙동의 사례 In Case of Seongan-dong and Jungang-dong in Cheongju City

정세림,이훈,김태영 대한건축학회 2003 대한건축학회논문집 Vol.19 No.7

The purpose of this paper is to clarify the longest-tern householder's ideas of settlement, that is, a house guardian deity, in traditional urban area focused on Seongan-dong and Jungang-dong in Cheongju City of Korea. As a result, the summaries of findings are as follows : 1. The longest-term householders have been existing over 35 years(in case of resident registration) in the historical urban area. Most of them are over 60 years old and have been succeeded by family members. More than half of householders occupy their dwelling houses combined with shop and business uses. 2. We found those who are proud of a house site and asked them about ideas of settlement by questionnaire, and it made sure that they hope to live in there for a inheritance, site conditions, and so on, while we could understand that the site not be succeeded to next generations in near future. 3. We found those who are not proud of their dwelling houses and asked them about renovations by questionnaire, and it made sure that they hope to remodel and build their dwelling for deterioration, small-sized rooms, and so on. These new-built houses occupy family members and houses combined with shop.

LAN 성능 평가 및 모니터링 기법

김태우,박정식 성공회대학교 2001 성공회대학논총 Vol.- No.16

어류 성장에 있어서 식물 및 동물플랑크톤의 먹이기여도

김백호,김미연,최환석,김정중,최민규,박승택,정연태,高村典子 원광대학교 환경과학연구소 2000 環境科學硏究誌 Vol.9 No.1

정신분열병 환자에서 리스페리돈의 투여에 따른 혈청 코티졸과 임상증상의 변화

김광수,성양숙,채정호,박원명,이정태,전태연 대한신경정신의학회 2000 신경정신의학 Vol.39 No.2

연구목적: 세로토닌 5HT₂수용체의 자극이 코티졸 분비를 증가시킨다는 점에서, 강력한 5HT₂길항제인 risper-idone은 정신분열병에서 보이는 시상하부-뇌하수체-부신축의 과활성화에 대하여 영향을 미칠 것이라고 생각되었다. 저자들은 세로토닌 5HT₂길항제인 risperidone에 의한 코티졸의 양적변화를 통하여 신경 생리학적인 변화를 추적하고 나아가 정신분열병의 병태생리에서 세로토닌과 코티졸의 병리학적 역할에 대하여 알아보고자 하였다. 방법: 본 연구는 카톨릭대학교 성모병원 신경정신과에 입원했던 DSM-Ⅳ 진단기준에 의한 정신분열병 환자 17명(남자 10명, 여자 7명)을 대상으로 정하였다. 채혈(4ml/sample)은 투약 전, 첫째, 둘째, 셋째, 십사일째, 이십팔일째, 사십이일째 병일에 각각 오전 8시와 10시에 두 번씩 하였으며, 오전 8시에 1차 채혈을 시행한 후 투약하고 그 2시간 후인 10시에 2차 채혈을 시행하였다. 혈청 코티졸치의 측정은 표준 이중항체 방사면역분석법으로 시행하였다. 결과: 1) 투약 전 코티졸치와 risperidone을 투여한 후의 코티졸치의 비교에서 혈청 코티졸치는 risper-idone의 투여에 의해 유의하게 감소하였다.(p<0.05). 2) Risperidone의 투약 전후의 평균 PANNS 점수는 양성증상점수(21.7±3.8, vs 11.4±3.0), 음성 증상점수(20.5±5.2, vs 14.6±2.8), 일반증상점수(44.3±5.4, vs 30.9±6.0)로 나와 유의한 감소가 있었다(p<0.05). 3) 남자와 여자의 투약 전 혈청 코티졸치는 차이가 없었으며 risperidone을 투여한 후 혈청 코티졸치의 감소정도도 성별에 따른 차이가 없었다. 4) 음성아형군과 양성아형군 간의 투약 전 혈청 코티졸치는 차이가 없었으며 risperidone을 투여한후 혈청 코티졸치의 감소도 아형에 따른 차이가 없었다. 결론: 이상에서 세로토닌 5HT₂길항제인 risperidone은 코티졸을 감소시키며 코티졸의 감소는 그 자체가 정신분열병의 치료에 있어서 중요한 요소가 될 수 있을 것으로 생각되었다. 또한 이점이 기존의 전형항 정신병약과는 구별되는 세로토닉 5HT₂수용체 차단에 의한 이득효과를 설명할 수 있을 것으로 보았다. Objectives: This study was designed to identify the role of serotonin and cortisol in the pathophysiology of schizophrenia by measuring quantitative change of serum cortisol levels after risperidone(5HT₂antagonist) administration. Methods: Subjects included 10 male and 7 female patients who met DSM-Ⅳ criteria for schizophrenia(n=17). Blood samples(4ml/sample) were taken at the baseline, 1st, 2nd, 3rd, 14th, 28th and 42nd days, twice, at 8:00 AM and t 10:00 AM in the morning after an overnight fast. The daily medication was administered after the first blood sampling at 8:00 AM. After basline sampling, the same dose of risperidone was administered to each patient until the end of the 3rd day. The dose of riperidone was then decided by clinical evaluation. Serum cortisol concentrations were measured by standard double-antibody radioimmunoassay. Results: 1) Administration of risperidone significantly decreased serum cortisol levels(p<0.05). 2) There were significant reductions in positive symtom scores(21.7±3.8, vs 14.3±4.() and negative syaprom scones. 20.5 5.2, vs 15.2±3.2), general symptom scores(44.3±5.4, vs 32. 9±4.2) of PANSS after risperidone administration(p<0.05) 3) There were no significant differences in baseline serum cortisol levels and the reductions of serum cortisol levels after administration of risperidone between males and females. 4) There were no significant differences n baseline serum cortisol levels and the reductions of serum cortisol levels after administration of risperidone between positive symptom subgroup and negative symptom subgroup. Conclusions: These results suggest risperidone decreases serum cortisol levels in schizophrenic patients and the reduction of cortisol by risperidone administration might be important factor in the treatment of schzophrenics, in contrast with typical antipsychotics. KEY WORDS: Risperidone·Schizophrenia·Cortisol·Gender·Positive/Negative subtype.

광반사를 이용한 광선반 채광시스템의 기본형상 설계 및 성능평가에 관한 연구

김정태,신현구,김곤 대한건축학회 2003 대한건축학회논문집 Vol.19 No.3

Good natural lighting and unimpeded views out of a building belongs to the minimum standards required by guidelines for natural, healthy, productive workplace. Attention, however, should be focused not so much on a simple maximization of the natural light available in a space, as on improving the quality of lighting by ensuring as even but intense distribution of illumination in all inner areas. An architectural means of optimal daylight distribution is by using so-called light shelf systems, horizontal shading and redirecting devices. They improve the uniformity of natural light in a space by reducing the level of illumination near the window and redirecting light deeply into the space. In most cases, systems of this kind consist of light-colored, reflecting or mirror elements in the area of the building facade. One problem in selecting and positioning elements of this kind is the facts that ultimately the amount of light available in the facade plane is merely redistributed and reduced a little with each reflection. This paper aims to provide the design guidelines for optimal light shelves based on their geometric and optical characteristics. Their role, that is, a tradeoff between optimal distribution of the daylight and glare control has been evaluated simultaneously. A series of computer simulation deals with the basic geometrical design elements of a commonly used light shelf and sky conditions. As is shown in the results, for best distribution, light shelves should be located as low in a space as possible without causing glare, typically above standing eye level. In addition, more uniformity of light distribution can be improved by extending of the shelf and reflectance of the shelf and higher ceiling height might play a role in increasing the effectiveness of light shelves.

흉통의 양상에 따라 분류한 불안정형 협심증 환자의 임상적 소견의 비교

김명수,김성구,정호석,온영근,신원용,김철현,최태명,현민수,권영주 순천향의학연구소 2001 Journal of Soonchunhyang Medical Science Vol.7 No.1

Background and aims : The clinical syndrome unstable angina pectoris that encompasses a variety of symptoms and clincal presentations of transient episode of myocardial ischemia, was devided to several subgroups. Also, it has variable pathophysiologic factors to cause myocardial ischemia. According to clincal presentation, coronary angiographic finding and prognostic factor, the result of unstable angina pectoris is variable. In fact, there were a few data reported on the prognosis of wide spectrum of patients with unstable angina. However, the precise risk of subgroups according to classitication has not been established because it was difficult to compare between studies. We classified unstable angina pectoris by clinical nature of chest pain, and performed to establish and compare the clinical presentations, coronary angiographic findings, treatement and prognosis of patients with unstable angina within subgroups of classification. Methods : Retrospenctive data for 164 unstable angina pectoris patients admitted to the Internal Cardiology Division of Soon Chun Hyang University Hospital from May 1996 to July 1999 was analyzed. The patients were classified into one of the following categories: Class I, new onset of severe angina; Class II, acceleration of previous chronic stable angina; Class III, angina at rest. Clinical presentations, echocardiographic findings, coronary angiographic findings, treatment and prognosis were compared. Results : From the total 164 patients, the subjects of classes were as follows : Class I, 46 cases (28.1%); Class II, 74 cases (45.1%); Class III, 44 cases (26.8%). In view of age distribution, the 7th decade had the highest incidence, and then, 6th, 8th decades were followed. There was no baseline differences among the 3 classes with respect to gender, number of risk factors. Significantly, class II showed more severe findings in abnormal Q wave 15 cases (20.8%), total occclusive lesion 10 cases (20.8%) and three vessel coronary disease 11 cases (22.9%) than other classes. The change of ST segment was significantly apparent (p<0.02) among class I 28 cases (60.8%), class III 26 cases (59.0%), comparing with class II 30 cases (40.5%). Class III had the higher incidence of one vessel coronary artery disease than class I and III. The heparin treatment was performed in 99 cases (60.1%). The incidence of nonfatal myocardial infarction was much more in class I and III, each 4 cases (8.7%, 9.8%) than in class II 1 cases (1.4%). In-Hospital death was occurred in class I and II, each 1 case. Conclusion : The patients with the acclerated angina from chronic stable angina had more severe coronary artery disease than other classes, but they had better in-hospital prognosis.

淸州市 舊都心內 터줏대감의 住宅改造 및 新築 樣相

정세림,김태영 대한건축학회 2004 대한건축학회논문집 Vol.20 No.9

The purpose of this paper is to clarify an aspect on the housing reconstruction of the longest-tenn householders In traditional urban area focused on Seongan-dong and Jungang-dong In Cheongju City of Korea As a result, the summaries of findings are as follows 1. The longest-term householder's dwellings have been divided by two typical types One of them IS a pure 'House' type, which has been located In the residential districts On the other hand, the other type is a 'House with Shop', Which has been located min the districts, where had been inhabited by the storekeeper class And these are also classified by the existing or new-built houses 2. In the reconstruction of pure houses, the longest-term householders would maintain or make alterations the existing house types With the proceeding of the evolution of the housing plan, the two stoned houses and the houses With multi families have been newly built But these have succeeded the placement of the traditional house, especially the location of gate and entrance 3. In the reconstruction of shop houses, these present, for the most part, are newly built except a few old shop houses Perhaps the most notable aspect of shop house be 'multi-stoned process' With the evolution of multi-story, the dwelling space has been shifted from the first floor to the second/third floor But some of the longest-term householders would maintain the old shop house type-small and medium Size, separation between dwelling and shop space, and types of old industry-around the street network of the existing market