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.

골격성 Ⅲ급 부정교합에서 수직적 안모형태에 따른 혀와 설골의 위치 비교

우광수,윤정현,김상철 대한치과교정학회 2000 대한치과교정학회지 Vol.30 No.5

혀와 설골의 위치가 안모형태와 어떤 양태로 상관성을 갖는지 비교평가하기 위해 69명의 성인군과 63명의 성장군에서 두부방사선계측사진을 얻었다. 성인군과 성장군에서 SN 평면에 대해 큰 하악평면각을 갖는 군과 작은 하악평면각을 갖는 군으로 구분하여 다음과 같은 결론을 얻었다. 1.혀의 높이는, 큰 하악평면각을 갖는 군보다는 작은 하악평면각을 갖는 군에서, 성인군보다는 성장군에서 높게 나타났다. 2.설골의 수직적 높이는 큰 하악평면각을 갖는 군보다는 작은 하악평면각을 갖는 군에서, 성인군보다는 성장군에서 높게 나타났다. 3.연령과 안모형태의 수직적 분류에 따른 설골의 전후방적인 위치는 차이가 없었다. 4.두개저에 대한 설골의 기울기에 있어, 성인군보다 성장군에서 좀 더 가파른 경사도를 갖고 있었다. The purpose of this study was to evaluate the position of tongue and hyoid bone in relation to vertical facial patterns in the adult and child. Lateral cephalograms taken in adults(63 cases, 11.7 years in average age) and children(69 cases, 22.6 years in average age) were traced and measured about position and posture of tongue and hyoid bone using the horizontal and vertical reference lines. The angle of mandibular plane to SN plane was employed to classify the samples into groups of hypodivergent and hyperdivergent. The comparison of the tongue/hyoid bone measurements between hypodivergent group and hyperdivergent group in the adult and child were statistically executed with Student's t-test. The results were as follows ; 1.The tongue height was lower in the hyperdivergent group than in hypodivergent group, and higher in children than in adults. 2.The vertical height of hyoid bone was higher in hypodivergent group than in hyperdivergent group and also higher in children than in adults. 3.The anteroposterior position was of no significant difference in relation to age or vertical facial pattern. 4.The inclination of hyoid bone in relation to cranial base was steeper in children than in adults.

Cobb

이은우,임정수,손민균,김봉옥 大韓再活醫學會 1998 Annals of Rehabilitation Medicine Vol.22 No.4

우리나라 여행수지의 구조와 변동요인 분석

정병우,박수자 경성대학교 2000 論文集 Vol.21 No.2

This paper is designed to make analysis of the determinant factors on Korea's travel balance by using empirical work. This paper also resorts to a corroborative analysis of the deciding factors of Korea's travel balance with the help of a presumptive formula, which regards the revenue and expenditure of Korea travel balance as subordinary variables. As results of empirical work, We found that the per capital GNP of each countries are significant variable on determinant travel balance. Amount of trade between countries is also important factor on determinant travel balance. The real exchange rate is an important factor on determinant travel expenditures.

CDMA 모듈을 이용한 로봇 원격제어기 개발

김우식,윤수정,김응석 한라대학교 2006 論文集 Vol.9 No.-

In this paper, we study the robot controller design using the voice and data communication via CDMA(Code Division Multiple Access) mobile communication network We design the robot remote controller using the three methods, telephone call speech recognition, DTMF (Dual Tone Multiple Frequency) realization, SMS(Short Message Service) transmission/reception way via CDMA mobile communication network We investigate the validity and effectiveness of the proposed remote controller which applied to the mobile robot

전자선 증착장치 및 ITO 박막의 제작과 그 특성에 관한 연구

김수길,최범식,우정주,고년규,황정남,정원모,이철주 연세대학교 자연과학연구소 1982 學術論文集 Vol.9 No.-

태양 전지의 제작시 투명 전극막으로 쓰이는 ITO 박막을 제조하기 위하여 cathode 접지 방식의 전자총을 가진 정전 편향 집속형의 전자선 증착 장치를 제작하였다. 가속전압이 0∼15kV, 필라멘트 전류가 0∼28A, 두 전극판 사이의 간격이 11mm, anode와 deflector 사이의 간격이 30mm인 최적 실험조건하에서 생성된 전자선 spot의 크기는 길이가 20mm 폭이 1mm였으며, 전자선의 출력은 약 400W였다. 이 전자선 증착 장치를 이용하여 1600℃까지의 증발 온도를 가진 도체와 절연체 등을 쉽게 증착시킬 수 있었으며, 만드어진 ITO 박막은 약 5000Å의 두께에서 10^-1∼10^-2Ω·㎝의 비저항과 95%의 광투과율을 갖는다. An electron beam evaporator with a cathode grounded type electron gun was designed and constructed in order to deposit ITO thin films for photovoltaic applications. The optimum condition was observed with electode spacing of 11mm, 30mm between anode and deflector, a cathode inner diameter of 3mm and an anode inner diameter of 5mm. As the accelerating voltage varies from 0 to 15kV and ghe filament current from 0 to 28 A, the minimum electron beam spot has a 20mm length, and 1mm width and the output power ranges from 0 to 400W under the above optimum conditions. We can deposit materials whose evaporation temperature is over 1600℃ using this evaporator. And as a result ITO thin film showed a low resistivity of 10^-1∼10^-2Ω·㎝ and the transmittance of 95%.

Olfactory neuroblastoma 증례보고

박익수,이정근,노양호,김동우,김우형,이희철 大韓顎顔面成形再建外科學會 2003 Maxillofacial Plastic Reconstructive Surgery Vol.25 No.2

Olfactory neuroblastoma is an uncommon malignant tumor(just over 300 cases have been reported in the medical literature by 1996)arising within the nasal cavity. This tumor has a neuroectodermal cell origin and is believed to specifically arise from the olfactory epithelium. The tumor was ftrst decribed in the French medical literayure by Berger and associates in 1924 by the name esthesioneuropitheliome olfactif. The english version of this term is esthesioneuroblastoma, and current medical literture uses this name interchangeably with olfactory neuroblastoma. We experienced a case of olfactory neuroblastoma in the mxillary sinus. We treated this patient with tumor resection, chmotherapy and radiotherapy. And now, the patient has been following up for 2years 6month, but olfactory neuroblastoma is very rare. SO we report this case with a review of literature.

SEM-EDX를 이용한 대기 점오염에서 배출된 개별입자상 오염물질의 물리화학적 특성

박정호,양수명,강경희,정재우 진주산업대학교 2004 論文集 Vol.43 No.-

The purpose of the study was to classify individual particle emitted from the point source of air pollution emissions in Kyongsangnam-do by SEM/EDX (scanning electron microscopy / energy dispersive X-ray analyzer). The SEM/EDX provided various physical parameters including particle`s optical diameter and chemical information. The total of 344 individual particle sample were collected at 5 point source including coal-fired power plant, incinerator, and oil boiler. Thus number fraction of each particle can be estimated based on chemical composition. To obtain number fraction of each particle class, an agglomerative hierarchical cluster analysis was initially applied to create particle classes for each sample. The study provides opportunities to identify particles source quantitatively and to develope various receptor models.

소아의 하악 과두 골절의 비외과적 치료 : 증례보고 CASES REPORTS

이정근,박익수,노양호,김동우,김우형,이희철 大韓顎顔面成形再建外科學會 2003 Maxillofacial Plastic Reconstructive Surgery Vol.25 No.1

Of all facial fractures in children, condylar fractures have the greatest propensity to produce a growth disturbance. The pediatric condylar fracture occurs very frequently in the mandible, but this injury is occasionally ignored due to difficulty of diagnosis and no cooperation of patient. The adequate initial diagnosis and active treatment must be performed because delayed and improper treatment lead to possible severe complications such as facial asymmetry, TMJ pain, limiation of motion and deflection, midline deviation of the dental arch. So, the goal of managing condyle fractures in the growing patient is to restore mandibular symmetry, occlusion, function without interfering with future growth. Commonly, fracture teatment aims at restoring function through repositioning and rigid fixation of the bony fragments. However, the generally preferred management of condylar fractures in growing children is nonsurgical. So, we present the clinical and radiographic follow-up results of 4 condylar fractures in pediatric patients whom we managed in conservative and functional method. We can summarize our protocol in management of pediatric condylar fracture as the following: The IMF using acrylic resin splint with circumferential wiring was performed for 1 or 2 weeks. After releasing IMF, the active physical therapy was done with guiding elastic band. Opening deviation was controlled by mannual pressure of surgeon or parents for 2 weeks. When unstable occlusion or functional problem remained, functional appliance after construction bite registration was used for several months.

Capsicum chinense, 재래종 및 저항성 고추 유전자원에서 역병 저항성 계통 선발

김정훈,여승호,김동우,배수연,한정혜,황희숙,김병수 慶北大學校農業科學技術硏究所 2002 慶北大農學誌 Vol.20 No.-

2000년도에 검정에서 역병에 살아남은 개체들로부터 채종하여 육성한 Capsicum chinense 31계통에 대하여 역병 저항성을 검정한 결과 고도의 저항성을 나타내는 것은 발견되지 않았다. 2001년도의 검정에서 역병에 살아남은 개체로부터 채종한 재래종 26계통에 대하여 다시 역병 저항성 검정을 실시한 결과 KC180, KC230, KC195, KC194에서 다수의 개체가 살아남아 저항성을 나타내었다. 그러나 KC180과 KC230은 각각 AC2258과 CM334와 혼종된 것으로 관찰되었다. KC195와 KC194는 재래종의 형질을 유지하고 있는 것으로 관찰되었다. CM334의 보존 증식과정에 자연교잡이 일어난 것으로 보여 이의 순도향상을 위하여 채종년도별로 시료를 꺼내어 역병저항성 검정을 실시한 결과 가장 오래된 1992년도 채종종자에서부터 약간의 이형주가 관찰도기 시작하여 1995년부터 2001년도까지 시간이 경과함에 따라 많이 변형되어 있는 것을 알 수 있었다. 1992년도 종자에서 이형주를 제거하고 원형의 개체로부터 자식종자를 대량으로 채종하였다. 함께 공시한 AC2258은 순수한 것으로 확인되었다. 1995년도 채종 CM334 종자에서는 비록 혼종은 되었으나 측지발생이 적은 개체들이 발견되어 이들을 개체 선발하여 역병에 저항성이며 측지발생이 적은 계통으로 육성하고 있다. A total of 31 c. chinense lines selected from 2000 screening were tested again for resistance to P. capsici but resistance was not found in the lines. A total of 26 selections from Korean land races tested 2001 spring were tested again for resistance to P. capsici. KC180, KC230, KC195 and KC194 showed moderate resistance to P. capsici. However, it was apparent on the basis of hortivultural characteristics that KC180 and KC230 had been naturally crossed with AC2258 and CM334, respectively. CM334 and AC2248 seed lots that were increased in different years were taken out and tested for resistance to improve their genetic purity because the resistant genetic resources have been showing some off-types in the population. Off-types began to be found in 1992 seed lots and the proportion and degree of the offs was increasing with time up to 2001. Plants true to the type in 1992 seed lots were selected and their inbred seeds were mass produced in a net cage in the greenhouse. AC2258 included in the experiment number of lateral branching at cotyledonary axil, although they were off from the original in the experiment together was uniform. In 1995 seed lost of CM334, plants with resistance to P. capsici and low or no number of lateral branching at cotyledonary axil, although they were off from the original CM334, were found and selection was applied to breed lines fixed in the characters.