위삼차신경핵에서 일차구심성 신경섬유 종말부의 미세구조 및 연접양상

배용철,박국필,정경원,박매자,조희중 대한해부학회 1995 Anatomy & Cell Biology Vol.28 No.5

표면 조도의 변화에 따른 마찰 및 마멸 특성

조용주,이상욱,구영필,서만식 釜山大學校生産技術硏究所 1999 生産技術硏究所論文集 Vol.56 No.-

마찰과 미끄럼 마멸에서 표면 거칠기의 특성에 대한 효과는 실험적으로 볼-디스크 마멸 시험기를 가지고 연구되어졌다. 실험은 서로 다른 하중, 미끄럼 속도, 그리고 윤활유 점도 조건하에서 산술평균값, skewness, kutosis를 변화시켜 수행되었다. 음의 값을 가지는 더 낮은 skewness 또는 더 높은 kutosis의 표면조도를 가진 같은 상술평균 값에 대하여 더 낮은 마찰을 가지는 경향이 있다. The effect of characteristic of surface roughness on friction and sliding wear was studied experimentally with ball-on-disk type wear tester. The test was conducted with specimens those have varying arithmetic mean value, skewness and durtosis under the condition of different load, sliding speed and lubricant viscosity. The surface of the lower skewness in negative value or the higher kurtosis tends to have low friction for the same arithmetic mean value.

강남성모병원에서의 정신과 자문경험

조용찬,이성필,유태열 大韓神經精神醫學會 1984 신경정신의학 Vol.23 No.2

In an attempt to evaluate the current trends of psychiatric consultation, authors investigated 142 cases of in patients who were referred for psychiatric consultation at Kangnam St. Mary's Hospital from April 1, to November 30, 1983. The results were as follows: 1. The majority of consultations was requested from the department of internal medicine(67.61%). 2. The overall consultation rate was 1.71% of total inpatients for the time period. The department of internal medicine ranked highest in the consultation rate(5.12%). 3. Among the immediate reasons for psychiatric consultation, request for diagnostic evaluation and treatment was 65.63% and request for control of specific symptoms or behavior was 34.37%. 4. Among the somatic symptoms present on consultation, gastrointestinal symptoms and head & CNS symptoms were the most frequent ones. 5. Affective disorders including depression(25.39%), and organic mental disorder(16.58%) were the most frequent diagnostic impressions given by consultant. 6. Regarding the concordance rate with the recommendations given by consultant, absolute concordance with laboratory tests(including psychological tests), drug treatment and psychotherapeutic approach was observed among 62.39% of total consultees. However, non-concordance was observed among 11.93%. 7. For the discharge diagnosis, psychiatric diagnosis was given to 33.03% among all the consultees. 8. The inter-departmental transfer rate following psychiatric consultation was 21.20%.

인접행렬의 고유벡터 성분비를 이용한 공간 분석 : Spatial Configuration Analysis Using the Eigenvector Ratio of Adjacency Matrix

최재필,조형규,최현철,황용하 대한건축학회 2003 대한건축학회논문집 Vol.19 No.11

The purpose of the ERAM model proposed in this paper is to analyze the spatial importance immanent in the intrinsic structure of spaces. Use of the adjacency matrix representing the connection of spaces makes it possible to analyze the spatial structure itself. On the assumption that a large number of people move continually at random in the system, the ratio of elements in any row of the n-th power of the adjacency matrix means the ratio of people of all nodes in equilibrium. Mathematically, it is the ratio of eigenvector corresponding to the dominant (maximum) eigenvalue, Therefore it is the attribute immanent in the structure of spaces itself. Moreover, it is possible to consider the relative level of attraction of spaces and the relative flow from spaces to spaces only by putting the gravity on the adjacency matrix. The ERAM model brings forth the flexible result reflecting the relativity of spaces and flows.

최근 5년간 요로감염의 원인균 및 항생제 감수성

김세웅,임필빈,정웅교,이승주,이지열,조용현,윤문수 대한화학요법학회 2002 대한화학요법학회지 Vol.20 No.3

배경 : 최근 요로감염 원인균에 대한 내성 증가로 항생제 감수성에 변화를 가져와 요로감염 환자에게 경험적 1차 치료를 위한 항생제 선택에 어려움을 주고 있다. 단순 및 복잡성 요로감염으로 진단 받은 환자들을 대상으로 원인균과 그에 따른 항생제의 감수성을 살펴봄으로써 향후 단순 및 복잡성 요로감염에 대한 항생제의 선택에 도움을 받고자 한다. 대상 및 방법 : 1996년 6월부터 2001년 5월까지 요배양 검사상 요로 감염균이 10^5cfu/ml 이상의 집락이 형성된 200명을 대상으로 해부학적 또는 구조적인 장애 유무에 따라 단순 요로감염 및 복잡성 요로 감염으로 나누어 각각의 원인균과 그에 따른 항생제의 감수성을 후향적으로 분석하였다. 결과 : 복잡성 요로감염의 가장 흔한 원인질환은 신경인성 방광이었다. 단순 요로감염의 가장 흔한 원인균은 E. coli (61.35%)였고 복잡성 요로감염에서는 E. coli 이외의 균이 E. coli 보다 더 흔한 원인균이었다(58.9%). 단순 및 복잡성 오료감염 중 그람 양성균에서는 vancomycin, penicillin 이 높은 감수성을 보인 반면 ciprofloxacin, imipenem이 낮은 감수성을 보였고 그람음성균에서는 amikacin, imipenem이 높은 감수성을 보인 반면 ampicillin, bactrim이 낮은 감수성을 보였다. 결론 : 단순 및 복잡성 요로 감염의 주 원인균으로 그람 음성균주 특히, Ecoli에 의한 감염이 많은 비중을 차지하고 있으나 빈도가 점차적으로 감소하는 추세이다. 또한 병원성 감염 및 도뇨관의 장기 유치에 따른 교대균의 증가, 비병원성 세균의 출현 등으로 인한 E. coli 이외의 기타 그람음성균 및 그람양성균의 증가하는 추세이다. 향후 임상에서 요로감염의 일치 치료제로 많이 사용되고 있는 ampicillin과 bactrim 등의 항생제의 감수성이 낮으므로 사용시 필요하다고 사료된다. Backround : The increasing frequency of failure of urinary tract infections (UTIs) may be due to emerging resistance to commonly prescribed antimicrobials. We studied the causative microorganisms and their antibiotic sensitivities in uncomplicated and complicated UTIs. Methods : We analyzed 219 microorganisms and their antibiotic sensitivities of 200 outpatients who had more than 10^5cfu/ml on urine from June 1996 to May 2001 retrospectively. The patients weredivided into 2 groups, uncomplicated UTI group and commplicated UTI group according to with or without underlying disease. Results : The most common underlying disease of complicated UTI was neurogenic bladder. The most common pathogenic microorganism was Escherichia coli (E. coli) (61.35%) in uncomplicated UTI group but in complicated UTI, non-E, coli(58.9%) was more common than E. coli. In uncomplicated and complicated UTI, vancomycin, penicillin showed relatively higher sensitivity of gram positive organisms, while ciprofloxacin, imipenem showed relatively lower sensitivity, and imipenem, amikacin showed relatively higher sensitivity of gram negative organisms, while bactrim, amipicillin showed relatively lower sensitivity. Conclusion : We consider that gram negative microorgansisms, especially E. coli, is the main cause of UTI. But, we should concern about the increase of gram positive organsms and other gram negative organisms besides E. coli. Bactrim, amipicllin which were prescribed empirically in UTIs, showed relatively lower sensitivity. Regarding tom the choice of adequate drug in the treatment of UTI, it is necessary to consider the change of pathologic microorganisms.

직접치수복조재에 따른 비글견 치수의 조직반응에 대한 연구

배지현,김영균,윤필영,조병훈,최용훈 大韓齒科保存學會 2010 Restorative Dentistry & Endodontics Vol.35 No.1

본 연구에서는 인위적으로 노출시킨 비글견의 치수조직을 기존의 수산화칼슘제재와 MTA, 접착성 레진, 광중합형 수산화칼슘제재를 사용하여 직접치수복조한 후 각 재료에 따른 치수의 반응을 광학현미경 하에서 조직학적으로 관찰하여 비교분석하였다. 2마리 비글견의 36개 치아를 이용하여, 실험적으로 치수를 노출시키고 노출된 치수에 치수복조재를 적용한 후 와동은 복합레진으로 충전하여 직접치수복조술을 시행하였다: (1) Mineral Trioxide Aggregate (MTA: ProRoot MTA, Dentsply, Tulsa, USA), (2) Clearfil SE Bond (Dentin adhesive system: Kuraray, Osaka, Japan), (3) Ultra-Blend (Photopolymerized Calcium hydroxide: Ultradent, South Jordan, USA), (4) Dycal (Quick setting Calcium hydroxide: LD Caulk Co., Milford, USA). 희생전 90일, 30일, 7일 전에 각 복조재별로 3개씩의 와동을 충전하였고 비글견을 희생시키고 조직시편을 제작하였다. 시편을 H&E 염색 후 광학 현미경으로 치수염증반응과 경조직 형성 정도를 관찰하였다. MTA 군은 초기에는 경조직 형성이 관찰되지 않고 치수조직의 위축과 부분괴사가 관찰되었으나 시간이 지나면서 경조직 형성이 관찰되었다. Clearfil SE Bond군은 초기에 염증세포의 침윤과 치수세포의 괴사를 관찰할 수 있었고 시간이 지날수록 치수 세포의 괴사가 더욱 진행한 양상을 보였다. Ultra-blend 군과 Dycal 군은 MTA 군과 비슷하게 초기에는 경조직 형성을 보이지 않고 중등도의 염증반응이 관찰되었으며 시간이 지나면서 경조직 형성이 관찰되었다. MTA, 수산화칼슘제재와 광중합 수산화칼슘제재는 초기의 치수염증반응 이후 조상아세포층, 상아질교 형성을 보여 직접치수복조재로 적당하였으며, 접착성 레진은 심한 염증반응과 치수 조직의 괴사 양상을 보여 직접치수복조재로 부적당하다는 결론을 얻을 수 있었다. The purpose of this study was to evaluate the pulp tissue reaction to direct pulp capping of mechanically exposed beagle dogs' pulp with several capping materials. A total of 36 teeth of 2 healthy beagle dongs were used. The mechanically exposed pulps were capped with one of the followings: (1) Mineral Trioxide Aggregate (MTA: ProRoot MTA. Dentsply, Tulsa, USA), (2) Clearfil SE Bond (Dentin adhesive system: Kuraray, Osaka, Japan), (3) Ultra-Blend (Photo-polymerized Calcium hydroxide: Ultradent, South Jordan, USA), (4) Dycal (Quick setting Calcium hydroxide: LD Caulk Co., Milford, USA) at 7, 30, and 90 days before sacrificing. The cavities were restored with Z350 flowable composite resin (3M ESPE, St. Paul. MN, USA). After the beagle dogs were sacrificed, the extracted teeth were fixed, decalcified, prepared for histological examination and stained with HE stain. The pulpal tissue responses to direct pulp capping materials were assessed. In MTA calcium hydroxide, and photo-polymerized calcium hydroxide groups, initial mild inflammatory cell infiltration, newly formed odontoblast-like cell layer and hard tissue bridge formation were observed. Compared with dentin adhesive system, these materials were biocompatible and good for pulp tissue regeneration. In dentin adhesive system group, severe inflammatory cell infiltration, pulp tissue degeneration and pulp tissue necrosis were observed. It seemed evident that application of dentin adhesive system in direct pulp capping of beagle dog teeth cannot lead to acceptable repair of the pulp tissue with dentine bridge formation.

중등도 심부전증 환자에서 Carvedilol의 치료 효과

차동훈,차영수,국진환,황경화,김형태,임상욱,김태용,조윤경,박필원 대한순환기학회 1998 Korean Circulation Journal Vol.28 No.4

Spontaneous Rupture of a Primary Splenic Cyst Causing Hemoperitoneum

Yong Pil Cho(조용필),Seung Mun Jung(정승문),Gil Hyun Kang(강길현),Myoung Sik Han(한명식),Hyuk Jai Jang(장혁재),Yong Ho Kim(김용호),Jin-Ho Kwak(곽진호),Youn Baik Choi(최윤백) 대한외과학회 2005 Annals of Surgical Treatment and Research(ASRT) Vol.68 No.3

Repeat CT Scan for Non-operative Management of Blunt Splenic Trauma

Yong Pil Cho(조용필),Seung Mun Jung(정승문),Myoung Sik Han(한명식),Hyuk Jai Jang(장혁재),Yong Ho Kim(김용호),Youn Baik Choi(최윤백) 대한외과학회 2004 Annals of Surgical Treatment and Research Vol.67 No.5

Use of meso-Rex shunt with transposition of the coronary vein for the management of extrahepatic portal vein obstruction

Yong-Pil Cho,Tae-Yong Ha,Gi-Young Ko,Kyung-Mo Kim,Sung-Gyu Lee 대한외과학회 2014 Annals of Surgical Treatment and Research(ASRT) Vol.86 No.2

The meso-Rex shunt is used to safely and effectively treat patients with portal hypertension due to extrahepatic portal vein obstruction. In the standard meso-Rex shunt technique, the patient’s own internal jugular vein is used as a vascular autograft. Inevitably, such a procedure requires neck exploration and sacrifice of the internal jugular vein. Here, we present a case of a 20-year-old man with idiopathic extrahepatic portal vein obstruction, who was treated with a new technique of transposition of the coronary vein, which is enlarged in most cases of portal hypertension, as an alternative to the standard meso-Rex shunt technique. The transposition of the coronary vein into the Rex recessus is more efficient and less invasive than harvesting an autologous vein graft. Therefore, this technique simplifies the procedure and should be used when possible.