편도주위농양에 관한 임상적 연구

유장렬,유문식,남부현 충남대학교 의과대학 지역사회의학연구소 1990 충남의대잡지 Vol.17 No.2

Peritonsillar abscess occurs when the bacterial infection of the palatine tonsil spreads to the potential peritonsillar space deep behind the tonsil. Recently, the incidence of peritonsillar abscess was decreased due to the advent of antibiotics but not uncommon complication of acute tonsillitis. A clinical observation was performed on 42 cases of peritonsillar abscess who admitted to the department of otolarngology in Chungnam National University from Jan. 1986 to Sep. 1990. The obtained results were as follows : 1. The most frequently involved age group was third decade. 2. Most prevalent season was spring(33%). 3. Side of abscess was left in 23 cases and right in 19 cases. 4. Among 42 cases, 19 cases were performed of aerobic culture and 14 cases were performed of anaerobic culture. In aerobic culture, 6 strains of α-hemolytic Streptococci, 4 strains of β-hemolytic Streptococci and 1 strain of Enterobacter cloaca were found. In anaerobic culture, 1 strain of Peptostreptococci and 1 strain of anaerobic Streptococci were found. 5. 39 patients were treated with incision and drainage, 16 patients of these were treated with interval tonsillectomy. 3 patients were treated with antibiotics only.

전위된 관절내 종골 골절의 수술적 치료 후 방사선학적 계측치와 임상 결과와의 관계

손홍문,임만택,문현식 朝鮮大學校 附設 醫學硏究所 2004 The Medical Journal of Chosun University Vol.29 No.3

Objectives: The purpose of our study was to evaluate the relationship between radiographic parameters and clinical results after operative treatment of the displaced intra-articular calcaneal fractures. Materials and Methods: We analyzed 35 patients of unilateral displaced intraarticular calcaneal fractures who had been treated by operative treatment. At the last follow up, we measured the radiographic parameters including Bohler angle, Gissane angle, heel height, calcaneal length, talocalcaneal angle, talar declination angle, and subtalar incongruity between normal and affected site. Clinical results were measured by Creighton-Nebraska Health Foundation Assessment Score (CNH). And then the correlation between the radiographic parameters and the clinical results were analysed by Pearson correlation method. Results: The average difference between normal and affected site were Bohler angle 15˚ (0-35), Gissan angle 6.5˚(0-20), heel height 4.7mm (1-12), calcaneal length 2.0mm (0-7), talocalcaneal angle 5.5˚(1-19), talar declination angle 2.2˚(0-8), calcaneal width 4.0mm (1-9), subtalar incongruity 0.54mm (0-2.5). The correlation coefficients between radiographic parameters and CNH score were Bohler angle 0.066 (p=0.75), Gissane angle 0.038 (p=0.829), heel height 0.019 (p=0.916), calcaneal length 0.091 (p=0.386), talocalcaneal angle 0.059 (p=0.737), talar declination angle 0.118 (p=0.501) , calcaneal width 0.250 (p=0.291), and subtalar incongruity 0.784 (p=0.002) respectively. Among the all radiographic parameters, The subtalar incongruity shows strong linear correlation with clinical results. Conclusion: We suggested that the subtalar incongruity was significantly correlated with the' clinical results after operative treatment of the displaced intraarticular calcaneal fractures.

관측기를 이용한 축소모형 건물의 시스템 식별

이승준,주석준,이상현,민경원,최문식,이영철 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.1(구조계)

This paper discusses System Identification using observer in time domain. It is carried out for a experimental Three story structure With Active Mass Damper(AMD). Applying gradually stable method. Observer Kalman Filter Identification(OKID) determines Maskov paramaters. System eigen value is presumed utilizing this variables. Simulation system is composed of this fluents's compounding. It is verticified to compare numerical simulation results with experimental measurements.

LED를 이용한 복합레진의 광조사시, 중합수축의 속도와 양, 미세경도에 관한 연구

박성호,김수선,조용식,이순영,김도현,장용주,문현승,서정원,노병덕 大韓齒科保存學會 2003 Restorative Dentistry & Endodontics Vol.28 No.4

This study evaluated the effectiveness of the light emitting diode(LED) units for composite curing. To compare its effectiveness with conventional quartz tungsten halogen (QTH) light curing unit, the microhardness of 2mm composite, Z250, which had been light cured by the LEDs (Ultralume LED2, FreeLight, Developing product D1) or QTH (XL 3000) were compared on the upper and lower surface. One way ANOVA with Tukey and Paired t-test was used at 95% levels of confidence. In addition, the amount of linear polymerization shrinkage was compared between composites which were light cured by QTH or LEDs using a custom-made linimeter in 10s and 60s of light curing, and the amount of linear polymerization shrinkage was compared by one way ANOVA with Tukey. The amount of polymerization shrinkage at 10s was XL3000 > Ultralume 2, 40, 60 > FreeLight, D1 (P<0.05) The amount of polymerization shrinkage at 60s was XL3000 > Ultralume 2, 60 > Ultralume 2, 40 > FreeLight, D1 (P<0.05) The microhardness on the upper and lower surface was as follows; <본문 참조> It was concluded that the LEDs produced lower polymerization shrinkage in 10s and 60s compared with QTH unit. In addition, the microhardness of samples which had been cured with LEDs was lower on the lower surfaces than the upper surfaces whereas there was no difference in QTH cured samples.

전해응집공정을 이용한 염색폐수의 처리

이용택,한승우,조영개,이현문,김태근,손인식,양병수 한국환경과학회 2000 한국환경과학회지 Vol.9 No.4

This research studied the characteristics and applicability of electrocoagulation using aluminium electrode for the color and COD removal in textile wastewater. Electrocoagulation reactor used two different electrode, Fe and Al, since in the general chemical wastewater treatment, aluminium and ferrous salts were used as coagulants. Aluminium electrode showed higher removal efficiency of color and COD than ferrous electrode did. The COD and color removal efficiency improved at the 0.192A/dm^2 current density. Thus, the electrocoagulation process with bipolar aluminium electrode showed better efficiency in the decolorization and COD removal rate of textile wastewater effluent than custom coagulants did.

Pyramiding effect of resistance gene xa13 against bacterial blight(BB) isolates breaking down Xa3 gene

Hyun-Su Park,Ki-Young Kim,Mun-Sik Shin,Tae-Hwan Noh,Jong-Cheol Ko,Young-Jun Mo,Woon-Cheol Shin,Jeong-Kwon Nam,Bo-Kyeong Kim 한국육종학회 2012 한국육종학회 심포지엄 Vol.2012 No.07

Japonica rice cultivars exhibit high susceptibility to bacterial blight(BB) disease due to genetic vulnerability in Korea. Korean japonica resistant rice cultivars mainly possess one of the genes, Xa1 or Xa3 for BB resistance. These resistance genes are becoming susceptible to K3a, resulting in serious rice yield reduction. This study was carried out to confirm the effect of xa13 gene pyramiding for developing of japonica rice cultivars resistant to BB pathogen breaking down Xa1 or Xa3. IRBB4 conferring Xa4 gene was resistant to K1(HB01013), K2(HB01014), K3(HB01015), and moderately resistant to K3a(HB01009). IRBB5 having xa5 gene was resistant to K1, K2, K3, and K3a. The recessive gene xa13 was resistant to K1 race but susceptible to K2, K3, and K3a. But Xa21 gene is susceptible to predominant K1 race but resistant to other races such as K2, K3, and K3a. Two genes Xa3 and xa13 were susceptible and Xa4 gene was moderate resistant to 24 isolates. xa5 and Xa21 genes were resistant to all isolates including K3a. When xa13 gene combined Xa4, xa5 and Xa21 genes, effect of xa13 gene pyramiding showed higher resistant reaction than that having singe gene out of Xa4, xa5, and Xa21. The order of resistance against 24 isolates breaking down Xa3 gene was IRBB55(xa13+Xa21) > IRBB53 (xa5+xa13) > IRBB51 (Xa4+xa13).

자동차용 파킹 락 기어의 내구시험과 시험 지그 개발

문현식(Hyun-Sik Mun),박성영(Sung-Young Park) 한국산학기술학회 2018 한국산학기술학회논문지 Vol.19 No.6

일반적으로 변속기 전체에 대한 내구시험을 통하여 파킹 락 기어의 내구성을 평가한다. 파킹 락 기어 부품 하나의 내구시험에 대한 시험 기준은 부재한 상황이다. 따라서 본 연구에서는 파킹 락 기어의 내구시험 기준을 자체적으로 설정하여, 내구 성능시험을 수행하였다. 파킹 락 기어의 항복응력을 구하기 위해 정적 파단 시험을 수행하였고, 항복응력의 60%를 내구시험 조건으로 설정하였다. 설정된 시험조건으로 100만회의 반복내구 성능시험을 수행하였다. 또한, 내구 성능시험을 수행하기 위하여, 전용 지그를 제작하였다. 제작된 지그가 정적 파단시험에서 파손되어, 파손된 지그에 대한 유한요소해석을 수행하고 설계를 변경하였다. 수정한 지그를 제작하여 자체적으로 설정한 시험기준으로 내구 성능시험을 수행한 결과, 파킹 락기어는 본 조건에 충족하였다. 본 연구에서 수행된 시험과 해석을 통하여 파킹 락 기어의 성능 및 내구 한계에 대한 기초 데이터를 확보하였고, 이러한 기초 데이터는 파킹 락 기어의 설계와 개발에 중요한 기초 자료로 활용될 것으로 사료된다. Generally, the durability of the parking lock gear is evaluated through an endurance test for the entire transmission but no test standard exists for the durability test of one part of a parking lock gear. Therefore, in this study, the durability test standards of the parking lock gear were determined autonomously, and the durability performance test was conducted. A static fracture test was carried out to determine the yield strength of the parking lock gear, and a durability test condition was set to 60 % of the yield strength. The durability test of 1,000,000 times was conducted under the given conditions using a dedicated test jig manufactured for the test. Because the jig fractured during the static fracture test, finite element analysis for the jig was carried out and the jig was re-designed. The modified jig was manufactured and the durability test was carried out based on the test standard of autonomously. The basic data on the performance and endurance limit of the parking lock gear were obtained using these tests and analyses, and the basic data will be used as fundamental materials for the design and the development of the parking lock gear.

지역난방-신재생에너지 하이브리드 열공급을 위한 실증설비 구축 및 열거래 기능 구현

문현식(Hyun Sik Mun),김용기(Yong Ki Kim),허재혁(Jae Hyeok Heo),윤석만(Seok Mann Yoon) 대한설비공학회 2022 대한설비공학회 학술발표대회논문집 Vol.2022 No.6

Recently, as the importance of energy efficiency has increased and the form of energy supply has diversified, the concept of heat trading that can efficiently manage energy sources is becoming more important. In this study, a smart platform demonstration complex that implements hybrid heat supply of district heating with renewable energy was built, and a system capable of bi-directional energy trade between district heating and prosumers or between prosumers connected through an energy network was developed. A renewable energy facility in the demonstration complex has been built, and the facility is replacing some of the heat supply from district heating. In addition, based on the stable operation of the demonstration complex, district heating and renewable energy heat sources, the bidirectional heat supply function was implemented and the actual data were analyzed.

지역난방-신재생에너지 하이브리드 열공급을 위한 실증설비 구축 및 열거래 기능 구현

문현식(Hyun Sik Mun),김용기(Yong Ki Kim),허재혁(Jae Hyeok Heo),윤석만(Seok Mann Yoon) 대한설비공학회 2022 대한설비공학회 학술발표대회논문집 Vol.2022 No.6

Recently, as the importance of energy efficiency has increased and the form of energy supply has diversified, the concept of heat trading that can efficiently manage energy sources is becoming more important. In this study, a smart platform demonstration complex that implements hybrid heat supply of district heating with renewable energy was built, and a system capable of bi-directional energy trade between district heating and prosumers or between prosumers connected through an energy network was developed. A renewable energy facility in the demonstration complex has been built, and the facility is replacing some of the heat supply from district heating. In addition, based on the stable operation of the demonstration complex, district heating and renewable energy heat sources, the bidirectional heat supply function was implemented and the actual data were analyzed.

3D 메쉬 모델의 쉐이딩 시 시각적 왜곡을 방지하는 법선 벡터 압축에 관한 연구

문현식(Mun Hyun Sik),정채봉(Jeong Chae Bong),김재정(Kim Jay Jung) (사)한국CDE학회 2008 한국CDE학회 논문집 Vol.13 No.1