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.

Dimethylnitrosamine에 의하여 유발된 만성 간 병변에 대한 연구

정진영,강대영 충남대학교 의과대학 지역사회의학연구소 1990 충남의대잡지 Vol.17 No.1

In an attempt to elucidate the pathological effects of phenobarbital on dimethylnitrosamine(DMN) induced chronic hepatic lesions, the present studies in the male Sprague-Dawley rats was undertaken to evaluate the number of dysplastic cells and the average nuclear size of 15, 45, 75 and 105 days after DMN injections. The results were as follows : 1. The liver dysplastic cells were present in the DMN treated group, while they were absent in the control. 2. The liver dysplastic cells in the DMN+phenobarbital treated group were more prominent than those of the DMN treated group. 3. The average nuclear size(0.59 to 0.71cm) of dysplastic cells in the DMN treated group was much larger (1.3 to 1.6cm) than that of the control(0.45 to 0.48cm). 4. The average nuclear size(0.63 to 0.71cm) of dysplastic cells in the DMN+ phenobarbital treated group was much larger than that of the DMN treated group (0.59 to 0.68cm). In summary, the result obtained by the present study indicates dimethylnitrosamine induces liver cell dysplasia. The observation also suggests phenobarbital promoted DMN induced liver cell dysplasia.

하수에서 분리한 합성세제 분해균의 특성

정민선,전진경,정영건,이해경,권오진,지원대,김관배 嶺南大學校 環境問題硏究所 1993 環境硏究 Vol.13 No.1

대구시와 경산시의 하수에서 음이온계 합성세제인 sodium dodecyl sulfate(SDS)와 sodium dodecylbenzene sulfonate(SDBS)를 유일한 탄소원으로 이용하는 균주 289종을 분리하고 이중 합성세제 분해력이 강한, 그람음성 간균으로 운동성인 8균주를 선정하여 그 선정균들의 특성을 조사하였다. 선정균은 40℃ 이상에서는 생육하지 못하였으며 생육 최적 pH는 균주간에 다소 차이가 있었으며 pH 4.0 이하에서는 선정균 모두 생육치 못하였다. 질소원으로는 SDS분해균의 생육에는 potassium nitrate가, SDBS 분해균의 생육에는 soytone이 좋았다. SDS 분해균인 DS-3, 6, 8, 24 및 SDBS 분해균인 BS-7, 8은 세제농도가 5.0% 이상에서도 생육이 가능하였다. 선정균들은 tetracycline에 감수성이 강한 것으로 나타났지만 penicillin에는 강한 내성을 띠는 것으로 나타났고, ??와 ??금속이온은 모든 선정균들의 생육을 억제하는 것으로 나타났다. On purpose to isolate the organisms, which would utilize detergents(sodium dodecyl sulfate, SDS and sodium dodecylbenzene sulfonate, SDBS) as a sole carbon source, from the waste water of Kyungsan and Taegu city 289 strains were isolated. Among them 8 strains, which are gram negative rods with motility and produce strong enzyme to biodegrade the synthetic detergents, were selected. The characteristics of them were investigated as follows, 8 strains were failed to grow above the temperature of 40℃ and below the pH 4.0 even though they have variable optimum pH. Potassium nitrate was very effective for the growth of SDS-biodegradable strains and soytone was effective for the growth of SDBS-biodegradable strains as a sole nitrogen source. Among 8 strains especially DS-3, DS-6, DS-8 and DS-24(SDS-biodegradation strains) and BS-7 and BS-8(SDBS-biodegradation strains) could grow above 5.0% of detergent concentration. All of 8 strains were very sensitive to tetracycline but resistant to penicillin. Selected 8 strains were inhibited by metal ions of ??(0.156mg/㎖) and ??(0.156mg/㎖).

Dimethylnitrosamine에 의하여 유발된 만성 간 병변에 대한 연구

정진영,강대영 해성병원 1992 海星病院論文集 Vol.1 No.-

금형 생산시스템의 일정계획 시스템 개발에 관한 연구

정한일,정대영,박진우 大田大學校 産業技術硏究所 1997 산업기술연구소 論文集 Vol.8 No.2

The scheduling problem in a die manufacturing system can be classified into the job shop scheduling problem. For some reasons, however, this problem can be viewed as the project scheduling problem with resource constraints and is known as the NP class problem. The reasons are as follows, firstly there are several operations such as machining, assembly and disassembly to be performed at the same time, secondly there are precedence relations among parts and operations, finally the available times of machines are different among them. In addition, it is very hard to obtain a schedule due to the characteristics of the die manufacturing system. In this study, we suggested a scheduling method that can generate a schedule in real-time with considering the characteristics of the die manufacturing system, and hierarchically structured schedule that consists of a high level, a middle level and a low level schedules. And we developed a scheduling system that can support making decision related to manufacturing planning and control, and we implemented the GUI for use's convenience.

Multiple Spinal Intradural Schwannomas Combined with Sequestered Lumbar Disc Herniation

김대용,김진욱,정주호,조재훈 고신대학교 의과대학 2008 고신대학교 의과대학 학술지 Vol.23 No.2

In this report, we describe a case of multiple intradural schwannomas in the spine combined with a upward sequestered disc herniation at L4-L5. It is often difficult to differentiate this tumor from lumbar disc herniation, especially a sequestered hernia. Gadolinium-enhanced MR images were a useful preoperative examination modality for differentiating these lesions from other diseases. Microscopically, the intradural tumors were successfully removed. The dura maters of the L2 and S1 were opened microsurgically, allowing the nerve fibers involved in the tumor to be identified. The involved fibers were cut around the tumor, and the lesion was resected while the intact nerve fibers were preserved. An upward sequestered lumbar disc herniation at L4-L5 was also successfully removed. Based on histological examination of the resected specimen, the tumors were diagnosed as schwannomas. Microsurgery allowed the tumors to be removed with minimal impairment from cutting of nerve fibers in the each nerve root.

주요우울장애 환자와 범불안장애 환자의 성격 특성 비교 연구

백대업,제영묘,김상엽,이대수,김현진,조정녀,최진혁 대한생물치료정신의학회 2003 생물치료정신의학 Vol.9 No.1

연구목적: 주요우울장애와 범불안장애는 병발율이 높아 두 질환의 관련성에 관한 연구가 있어 왔다. 본 연구는 성격평가 질문지(Personality Assessment Inventory)를 적용하여 두 환자군에서 성격 특성을 비교해 보고자 하였다. 연구방법: 2001년 8월1일부터 2001년 11월 30일 사이에 종합병원 정신과를 방문한 환자들을 대상으로 하여 전문의의 면담을 통한 진단과 DSM-Ⅳ 진단 기준에 의한 SCID-Ⅰ을 적용하여 최종 진단된 16명의 주요우울장애 환자 및 12명의 범불안장애 환자를 대상으로 성격평가 질문지를 적용하였다. 연구결과: 긍정적 인상척도(positive impression)가 주요우울장애 환자군에서 범불안장애 환자군에 비하여 의미 있게 높았다. 결 론: "남에게 잘 보이려는 경향"이 범불안장애 환자군에 비하여 주요우울장애 환자군에서 많았다. Objectives : The purpose of this study is to compare characteristics of personality in the patients with major depressive disorder and those with generalized anxiety disorder by using the PAI(personality Assessment Inventory) Methods : PAI(Personality Assessment Inventory) was applied to 16 patients with major depressive disorder and 12 patients with generalized anxiety disorder. Results : PIM(positive impression) score was significantly higher in the patients with major depressive disorder than those with generalized anxiety disorder. Conclusion : The patients with major depressive disorder have more "faking good"tendency than those with generalized anxiety disorder.

EEMR 관을 이용한 식도 과립세포종의 제거 1예

문정섭,유권,전영빈,정원종,양대열,이승진 대한소화기내시경학회 1999 Clinical Endoscopy Vol.19 No.4

The granular cell tumor was first described in 1926. Recently, it has been suggested that the tumor is Schwann cell in origin, and this notion has been supported by electron microscopic studies and immunohistochemistry of the S-100 protein. The most frequently involved organs include the tongue, skin, breast, and digestive tract. The esophagus is rarely involved. The treatment of choice for an esophageal granular cell tumor is still controversial. The traditional treatment has been surgical excision, but new therapeutic options, including laser surgery, diathermy loop, and multiple biopsies have recently been tried. An endoscopic esophageal mucosal resection (EEMR) tube, originally designed for resection of early esophageal cancer, is widely used nowadays. A case of a granular cell tumor of the esophagus, which was successfully removed by an EEMR tube, is herein reported.

企業 附設 硏究所 活動實態에 관한 硏究 : 釜山·慶南地域을 中心으로

河正鎭,黃圭完,申大赫,兪炳哲 동아대학교 공과대학 부설 한국자원개발연구소 1990 硏究報告 Vol.14 No.2

The research institute of an enterprise attaches have been enlarged in korea. This study grasps the status and the research activity in the research institute of an enterprise attached in the Pusan and Kyungnam. So, we find the important role in the research institute of a enterprise attached.

인트라넷 이용채택에 관한 연구

이대용,정광진 조선대학교 경영경제연구소 2000 經營經濟硏究 = Management and economics research Vol.23 No.1