췌장염에 의한 가성낭종내에 생긴 가성동맥류 : 1례 보고

오연희,이채경,김승현,이성우,양창현,이정호,이영현 동국대학교 경주대학 1996 東國論集 Vol.15 No.-

만성 췌장염의 합병증으로 생긴 가성동맥류는 드문질환으로, 반복적으로 다량의 출혈을 일으킬 수 있으며, 치료를 하지 않을 경우 사망율이 높기 때문에, 조기 진단과 치료가 필수적이다. 저자들은 38세 남자 환자에서 췌장염의 합병증으로 생긴 가성낭종내에서 발생한 가성동맥류 1예를 경험하였기에 보고하는 바이다. 가성 동맥류의 색혈류도플러상 낭종내에 양방향 흐름의 와류를 볼 수 있었다. Pancreatic Pseudoaneurysm within Pseudocyst from Pancreatitis: 1 Case Department of Diagnostic Radiology and Internal Medicine, College of Medicine,DongGuk University Yeon Hee OH M.D., Chae Kyeong Lee M.D., Seoung Hyeon Kim M.D., Sung Woo Lee M.D., Chang Heon Yang M.D., Jung Ho Lee M.D., Young Hyun Lee M.D. Pseudoaneurysm from pancreatitis is uncommon, but it can cause recurrent and massive hemorrhage. Because of high morbidity and mortality, early detection and treatment of the pseudoaneurysm is needed. We report a case of pseudoaneurysm within pseudocyst from pancreatitis. Color-flow Doppler sonography shows bidirectional flow and turbulent arterial flow, within anechoic mass.

Nd:YAG Contact Laser를 이용한 새로운 미세혈관문합술의 실험적 연구

김우경,정전은,박승하,임재호,조진환 大韓成形外科學會 1993 Archives of Plastic Surgery Vol.20 No.3

A comparative study was undertaken to evaluate the contact Neodymium : yttrium aluminum garnet(Nd : YAG) laser system for vascular anastomosis of small caliber blood vessels(diameter 0.5-1.2mm) in the animal model. In this study 40 femoral arteries and 40 femoral veins of Sprague-Dawley rats were anastomosed by contact laser assisted microvascular anastomosis(LAMA) utilizing 3 stay sutures which were placed 120 degrees apart and the intervals welded with contact Nd : YAG laser unit, conventionally sutured anastomosis(CSA) served as controls. The time needed for vascular anastomosis, patency rate (immediate postoperative, postoperative 2nd day, postoperative 1 week, postoperative 4 week), gross and microscopic evaluations were compared to conventional microsurgical suture technique. The results are as follows : (1)Post-operative patency rate was 82.5% for femoral artery and 75% for femoral vein by contact LAMA technique compared to 90% and 75% by CSA technique at post operative 4 weeks. (2)Less time-consumed for arterial anastomosis by 6 minutes 23 seconds and venous anastomosis by 8 minutes 55 seconds with contact LAMA technique compared to CSA technique. (3)Grossly almost complete healing had taken place by post-operative 1 week by contact LAMA technique. (4)Aneurysm formation was 5% for femoral artery and 15% for femoral vein by contact LAMA technique compared to 5% and 10% respectively by CSA technique. (5)Microscopically, re-endothelization was complete by post-operative 7th day by contact LAMA technique. There was less medial hypertrophy and hyperplasia and also less inflammatory response compared to CSA.

육안적 혈뇨로 내원한 환자에서 발견된 방광 유전분증 : 증례보고

김은진;성 현;홍수민;정성연;박경식;손형래;박일권;구호석;고행일 인제대학교 백병원 2011 仁濟醫學 Vol.32 No.-

Amyloidosis is a disease resulting in deposition of amyloid in the body. The disease can be either primary or secondary. The amyloidosis of urinary bladder is more usually affected by primary amyloidosis and also very rare. The patient with primary amyloidosis of the bladder usually presents with gross hematuria. The amyloidosis resembles bladder cancer in cystoscopy. It can be confirmed by biopsy. The treatment consists of medication (e.g., steroid, antitumor agent, cholchicine, DMSO) and/or transurethral resection. The standard treatment is mephalan and prednisolone. A 49-year-old man complained of recently developed gross hematuria without abdominal pain. We examined urinary bladder cystoscope for gross hematuria. It revealed small bulging mass on trigone are a of bladder. Therefore we did bladder biopsy. Finally, it revealed bladder amyloidosis. The patient was improved by medication (mephalan 2mg and prednisolone 1 mg/kg po daily). We report an unusual case of amyloidosis involving bladder.

Ionizing 방사선이 MOS 소자에 미치는 영향에 관한 연구

김말문,한병국,배인호,김인수,유승권 嶺南大學校 基礎科學硏究所 1990 基礎科學硏究 Vol.10 No.-

The analysis of a simple model for radiation-induced space charge buildup in the SiO₂layers of MOS(Metal-Oxide-Semiconductor) is carried out. The model assumes that hole­electron pairs are created in SiO₂layer by the radition and that some of the electrons thus created drift out of SiO₂layer under action of an applied potential across the oxide, V??while corresponding holes become trapped. in these experiments, MOS capacitors having 1100Å and 1950Å SiO₂thickness are exposed to X-ray. Both p-and n-type substrate and Al metal electrodes are used to evaluate characteristics of radiation induced positive charges. From the results of these experiments △V ?? and the number of holes trapped in SiO₂layer strongly depend on oxide thickness, electric field across the oxide layer and absorbed dose. Alwayys C-V(Capacitance-Volage) curve shifts negatively without any relation to substrate types and applied voltage during radiation. This means that trapped charges in the oxide are always positive.

B_(2)O_(3)를 첨가한 Ni-Cu-Zn Ferrite의 자성에 대한 소결온도 효과

김민경,이명호,고재귀,송승기 명지대학교 자연과학연구소 2005 자연과학논문집 Vol.24 No.-

B_(2)O_(3)가 첨가된 Ni-Cu-Zn 페라이트의 소결온도 변화에 따른 자기적 성질을 연구하였다. 실험에 사용한 시료는 0.1 wt%의 B_(2)O_(3)를 (Ni_(0.204)Cu_(0.204)Zn_(0.612))Fe_(1.198)O_(2.98)에 첨가하여 각각 1000℃, 1100℃ 그리고 1200℃으로 4시간 동안 소결시켜 제작했다. 시료의 자기적 성질은 X-ray 회절 패턴, 자기이력 곡선, 초투자율, 손실계수 그리고 비저항을 측정하여 연구하였다. 자기이력 곡선과 초투자율 측정 결과로부터 세 시료 모두 우수한 연자성체가 되었음을 확인하였고, 소결온도가 높을수록 coercive force(H_(c))의 감소와 초투자율의 증가가 관찰되었다. 특히 가장 높은 온도(1200℃)로 소결한 시료의 Hc는 0.217Oe이었고, 초투자율은 전 영역의 주파수에 걸쳐 가장 큰 값을 유지하였다. 전력손실은 1 ㎑~10 ㎒ 주파수 영역의 교류에 대해 시료 모두 안정된 값을 갖고, 1200℃로 소결된 시료의 전력손실과 비저항은 시료 중 가장 적은 값을 가졌다. We have studied the dependence of B-doped Ni-Cu-Zn ferrite on sintering temperature. The samples were prepared from 0.1 wt% B_(2)O_(3)-doped (Ni_(0.204)Cu_(0.204)Zn_(0.612))Fe_(1.198)O_(2.98) ferrites and sintered at 1000℃, 1100℃ and 1200℃ for 4 hours respectively. The crystal structures of the samples were identified by X-ray diffraction pattern, and the magnetic properties of those were investigated by measuring X-ray diffraction pattern, hysteresis curve, initial permeability and resistivity. The results showed that all of the three samples were good soft magnetic materials, and initial permeability increased with the decreasing of Hc as the sintering temperature became higher. Especially, the sample sintered at 1200℃ showed Hc of 0.217Oe and maintained the highest value of initial permeability through the whole frequency range. The loss factors of the samples showed good frequency stability from 1 ㎑ to 10 ㎒ and both the loss factor and resistivity of the ssample sintered at 1200℃ was the least.

우리나라 主要 樹木園 및 植物園의 植物保有實態 分析에 關한 硏究

金泰旭,田承勳,姜基縞 서울大學校農業生命科學大學附屬樹木園 1991 서울大學校 樹木園 硏究報告 Vol.- No.11

우리나라 樹木園(植物園)들의 植物保有 實態를 把握하기 위하여 韓國植物園 聯合會 總監集을 대상으로 분석, 고찰한 결과 현재 우리나라에 수집되어 있는 식물의 전체 分類群 數는 225科 1,428屬 9,481種類로 나타났으며 이중 국내 自生樹種과 外國原産 導入種의 경우는 각각 166科 683屬 2,001種類와 193科 1,052屬 7,480種類로 파악되어 자생식물의 수집이 극히 저조한 것으로 나타났다. 樹木園別 수집현황으로는 천리포樹木園이 4,479種類로 가장 많고 광릉樹木園이 2,719種類, 여미지植物園이 1,614종류, 서울대공원이 931종류, 서울대 관악樹木園이 740종류 등을 각각 보유하고 있는 것으로 나타났다. 樹木園別 식물수집의 特色은 多樣한 植物資源의 수집보다는 관상적 가치가 높은 수종 중심의 劃一的 計劃에 의한 수집으로 분석되었다. 따라서 장차 식물자원의 綜合的인 利用 및 硏究등에 필요한 수종과 특히 自生樹種에 대한 集中的인 蒐集이 이루어져야 할 것으로 판단되었다. This study was carried out to figure out the current status of plant holdings of arboreta (botanical gardens) in Korea and to establish the sound basis for plant resource management by means of analyzing "A Comprehensive Bibliography of Botanical Gardens" (Korean Association of botanical Gardens, 1991). The total number of taxa, which consist of 225 families and 1,428 genera, was 9,481 kinds. Those taxa include 4,793 species, 735 varieties, and 3,953 infraspecific taxa, respectively. And the total plant holdings were classified into 2,001 kinds of plants native to Korea and 7,480 kinds of plants introduced. Species holdings of major arboreta were 4,497 kinds at the Chollipo Arboretum, 2,719 kinds at the Kwangneung Arboretum, 1,614 kinds at the Cheju Fantasy Garden, 931 kinds at the Seoul Grand Park, and 740 kinds at the Kwanak Arboretum of Seoul National University. The present collection priorities for those arboreta were mostly confined to specific families and genera, and also showing increasing trends of introducing more exotic species rather than native ones.

중소도시 하수관거의 침입수량 및 수질오염 원단위 산정

김옥형,박승기,정재훈,임경호 公州大學校 工學硏究院 生産技術硏究所 2004 論文集 Vol.12 No.-

The volume of wastewater in combined sewers in study areas usually exceeds capacities of the sewer system or the treatment plant during storms. For this reason, combined sewer systems are designed to overflow occasionally and discharge excess waste water. The 6 monitoring sites were selected from two small cities near the Hongsung prefecture during over a rainy season. Monitoring was performed by collecting grab samples and by measuring the rainfall and flow rates during dry and wet seasons. Generally the flow rate of wastewater in combined sewers was rapidly decreased after 23:00 PM and gradually increased from 06:30 AM in all sites during the dry season. Due to monitoring and statistical analysis, the groundwater contributes on sewage volume increase (average 3.4-25.4% more) during experimental periods. Therefore, this research is focus on the investigation of the effects of stormwater and groundwater to combined sewer systems.

방류관거의 안정성에 대한 실험적연구

김가현,이승휘,유상호 慶南專門大學 2000 論文集 Vol.28 No.1

남사천 하류지역 홍수피해 분석 연구

김가현,이승휘,서진호,민일규,이영재 동아대학교 건설기술연구소 2000 硏究報告 Vol.24 No.1

Where no records are available at a site, a preliminary estimate may be made from relations between floods and catchment characteristics. Anumber of these characteristics were chosen for testing and were measured for those catchments where mean annual flood estimates were available. Although the improvement using extended data in regression of flood estimates on catchment characteristics was small, this may be due to the limitations of the regression model. When an individual short term record is to be extended, more detailed attention can be given; an example is presented of the technique which should be adopted in practice, particularly when a short term record covers a period which is known to be biassed. A method of extending the peaks over a threshold series is presented with a numerical example. The extension of records directly from rainfall by means of a conceptual model is discussed, although the application of such methods is likely to be limited by lack of recording raingauge information. Methods of combining information from various sources are discussed in terms of information from catchment characteristics supplemented by records, but are generally applicable to different sources of information. The application of this technique to estimating the probable maximum flood requires more conservative assumptions about the antecedent condition, storm profile and unit hydrograph. It is suggested that the profile and catchment wetness index at the start of the design duration should be based on the assumption that the estimated maximum rainfall occurs in all durations centered on the storm peak.

자궁내막암의 방사선치료 성적

김재성,김준상,조문준,박승호,노흥태,남상륜 충남대학교 의과대학 지역사회의학연구소 1996 충남의대잡지 Vol.23 No.1

Purpose : To evaluate survival rate, treatment failure pattern and complication of endometrial carcinoma patients treated with radiation therapy Materials and Methods : From November 1989 through March 1995, twenty two patients with endometrial carcinoma were treated with radiation therapy at Chungnam National University Hospital. According to the 1988 FIGO staging system, four patients had stage I A disease, 6 stage I B, 4 stage I C, 1 stage Ⅱ A, 6 stage Ⅲ A, and 1 stage Ⅲ B. Radiation therapy was given preoperatively to 2 patients, postoperatively to 19 patients, and curatively to one patient considered to be inoperable due to valvular heart disease. Twelve patients were treated with external radiation therapy alone by conventional technique (180-200 cGy/fraction), and 6 patients with external radiotherapy plus high dose rate intracavitary radiotherapy (HDR ICR), and 4 patients with HDR ICR alone. Results : All patients were followed up for 9 to 71 months (median 21 months). The overall 5 year survival rate of all patients was 68.9%. The 5 year survival rates of stage I , Ⅱ , and Ⅲ were 87.5%, 100%, and 41.6%, respectively. Relapse rate was 9.1% (2/22), and treatment failure occurred as a distant metastasis only without local failure. Early mild complication rate was 31.8% (7/22), and late complication rate 9.1% (2/22), including one radiation colitis and one vulvar ulcer. Conclusion : Adjuvant pelvic radiation thereapy is an effective local treatment modality to prevent local relapse in patients with endometrial carcinoma not accompanying severe late complications.