얼굴 연조직 강화를 위한 자가지방 이식 후 발생한 급성 경계부위 뇌경색

민경현, 이혜림, 여민주, 김지선, 이성현, 이상수, 신동익 충북대학교 의과대학 충북대학교 의학연구소 2016 忠北醫大學術誌 Vol.26 No.1

본문참고

교외지역에서 토양 중 PBDEs 종별 농도 특성

이성희,여현구 忠州大學校 2010 한국교통대학교 논문집 Vol.45 No.-

Polybrominated diphenyl ethers(PBDEs) was measured in soil samples of Ansung in Kyonggi-province to investigate concentration characteristics of PBDEs. Total concentration of PBDE were 2,205.3 pg/g dry weight (DW) in soil sample. BDE-209 showed as the most abundant congener in soil samples which was related to imported amount and usage amount of deca-BDE technical mixture in Korea. Also, BDE-99, BDE-47, BDE-100 deposition in soil sample was higher than other congeners and was related to the imported and usage amount reported for penta-BDE technical mixture in Korea. Correlation coefficient between PBDE contribution and technical mixture formulation(Bromokal 70-5DE) were significant(r=0.91, p<0.01) which suggests the influence of sources in this technical mixtures.

통계적 방법을 이용한 오존 형성의 예측

여영구,손상현,오세천 漢陽大學校 環境工學硏究所 1999 環境科學論文集 Vol.20 No.-

통계적 방법을 이용하여 오존 형성의 예측에 관한 연구를 수행하였다. 통계적 방법으로는 파라미터 평가 방법과 인공신경 회로망 방법이 적용되었다. 파라미터 평가 방법에는 실시간 파라미터를 평가하기 위하여 ELS 및 RML 방법이 사용되었으며 오존 형성의 모델로는 ARMAX 모델을 사용하였다. 또한 3층 구조를 갖는 인공신경 회로망 방법을 이용하여 오존 형성의 예측 시험을 수행하였으며 본 연구에 사용된 통계적 방법의 성능을 평가하기 위하여 오존 형성의 예측결과를 실제자료와 비교 분석을 하였다. 실제 자료와의 비교를 통하여 파라미터 평가 방법 및 인공신경 회로망 방법에 근거한 예측방법이 제한된 예측 구간 내에서 만족할 만한 성능을 보임을 확인할 수 있었다. The prediction of ozone formation was studied using the stochastic method, Parameter estimation method and artificial neural network(ANN) method were employed in the stochastic scheme. In the parameter estimation method, extended least squares(ELS) method and recursive maximum likelihood(RML) were used to achieve the real time parameter estimation. Autoregressive moving average model with external input(ARMAX)was used as the ozone formation model for the parameter estimation method, ANN with 3 layers was also tested to predict the ozone formation. To demonstrate the performance of the ozone formation prediction schemes used in this work, the prediction results of ozone formation were compared to the real data. From the comparison it was found that the prediction schemes based on the parameter estimation method and ANN method show an acceptable accuracy with limited prediction horizon.

장기간 환기역치 운동이 심부전증 환자치료에 미치는 효과에 관한 연구

여남회,김종현,차혜리,김상수 대한스포츠의학회 2000 대한스포츠의학회지 Vol.18 No.2

The purpose of this study was to assess the feasibility and the effect of a long-term ventilatory threshold exercise training program on heart failure patients. The subjects were 20 patients who were divided into control and exercise group. They are mean aged from 61.5yr to 53.3yr. mean New York heart association (HYHA) class fromⅠto Ⅱ, mean left ventrical end-diastolic volume(LVED) from 123 to 123ml, mean ejection fraction (EF) from 39.9% to 38.4%, and mean V˙O_2max from 25.6ml/kg/min respectively. The underwent 6 weeks ventilatory threshold exercise training program which consisted of the workload was V˙O_2 at ventilatory threshold for 30 minutes as day at 3 times per week. Before and after exercise training program, V˙O_2, V˙CO_2 LVED volume and length, left ventrical end-systolic(LVES) volume and length, and ejection fraction were measured. Statistical analysis were performed using analysis of variance T-test and paired t-test. The results of this study are followings. After exercise training program, there were significantly differences in submaximal and maximal exercise performance, V˙O_2 at ventilatory threshold, V˙O_2max, and V˙Emax between control and exercise group respectively (p<0.05). Significantly differences between two groups were also found in left ventrical end-diastolic volum(LVESV) and ejection fraction (EF)(p<0.01). NYHA class also improved form a mean or 2.5 to 1.5(p<0.01). In conclusion, this study showed that the venilatory threshold exercise training program is useful method of clinical application for chronic heart failure.

대기 중 PCBs의 입경분포 및 가스/입자 분배 특성

이성희,여현구 忠州大學校 2008 한국교통대학교 논문집 Vol.43 No.-

Atmospheric concentrations of polychlorinated biphenyls (PCBs) were measured in rural of Kyong-gi province in 2001 for every two week with long-term sampling period (10 days) with Anderson air sampler. The objectives of the research presented in this paper were to estimate characteristics of particle size distribution and gas/particle partitioning of PCBs in the atmosphere. Size distribution of total PCBs was tri-modal distribution, such as 7-11 µm, 3.3-4.7 µm, 0.43-0.65, which appeared with maximum fraction(%) of total PCBs in accumulation mode (0.43< dp <0.65). Octanol-air partitioning coefficient and subcooled vapor pressure were good predictors of gas/particle partitioning of PCBs.

호산구성 기관지염의 임상적 특징

김용현,윤여일,임건일,박상준,주재학,김용훈,박춘식 순천향의학연구소 2001 Journal of Soonchunhyang Medical Science Vol.7 No.2

Background: Eosinophilic inflammation of airway is usually associated with airway hyperresponsiveness in bronchial asthma. However, there is a small group of patients who has the eosinophilic inflammation in the bronchial tree with normal spirometry and no evidence of airway hyperresponsiveness, which was named eosinophilic bronchitis. The objectives of this study are 1) to investigate the incidence of eosinophilic bronchitis in the chronic cough syndrome and 2) to evaluate the clinical features and course of eosinophilic bronchitis. Methods : We evaluated 92 patients who had persistent cough for 3 weeks or longer. In addition to usual diagnostic protocol, we performed differential cell count of sputum. Eosinophilic bronchitis was diagnosed when the patient had normal spirometic values, normal peak expiratory flow variability, no airway hyperresponsiveness, and sputum eosinophilia(>3%). Result : The causes of choronic cough were post-nasal drip in 33%, cough variant asthma in 16%, bronchitis in 15%, and eosinophilic bronchitis in 12% of the study subjects. Initial eosinophil percentage in sputum of patience with eosinophilic bronchitis was 26.8±6.1% (3.8-63.7%). Treatment with inhaled steroid is related with a subjective improvement of cough severity and a significant decrease of sputum eosinophil percentage (from 29.1±8.3% to 7.4±3.3%)/ During the follow up period of over ? months, recurrence of cough of was associated with reappearance of sputum eosinophilia. Conclusion : Eosinophilic bronchitis is one of the important causes of chronic cough. Assessment of airway inflammation by sputum examination is important in investigating the cause of chronic cough. Cough in eosinophilic bronchitis are effectively controlled by inhaled corticosteroid, but it recurs frequently over a long term period of follow-up(Korean J Med 60:77-84, 2001)

관절성형술 및 측두근막 이식술을 이용한 악관절 강직증의 치험례

진택현,오승환,류동목,김여갑,이상철 大韓顎顔面成形再建外科學會 1996 Maxillofacial Plastic Reconstructive Surgery Vol.18 No.1

This is a case of bony ankylosis of right temporomandibular joint with mild facial asymmetry resulted from trauma, which bring about the right condylar fracture, and corrected by interpositional arthroplasty with temporal fascia flap and coronoidectomy. The postoperative results were functionally and esthetically good, but continued osbervation is necessary to evaluation of abnormal bony growth and reankylosis.

혼합치열기 공간분석 방법들의 정확도에 관한 비교 연구

이상호,여현옥 大韓小兒齒科學會 1990 大韓小兒齒科學會誌 Vol.17 No.1

This study was performed in order to determine the accuracy of 4 mixed dentition analysis methods and combinations of these methods in Korean. The samples in this study were mandibular casts of 107 Koreans with normal occlusion of permanent dentition, ranging in age from 12 years to 25 years. Measurements of mesiodistal widths of the mandivular four anterior teeth, and mandibular canine and premolars were obtained from the casts. Actual mesiodistal widths of mandibular canine and premolars compared with predicted widths of mandibular canine and premolars taken by 4 prediction methods. From this study, the following conclusions were made: 1. Correlation coefficients for the sum of mesiodistal widths of the mandibular canine and premolars with their predicted values obtained by each of the 4 prediction methods revealed 0.685 for Ballard and Wyile, 0.670 for Moyers,0.683 for Tanaka and Johnston, and 0.681 for Song etc. 2. In differences between average actual width and average predicted width of mandibular canine and premolars, Song etc. method had the minimum difference value with 0.034mm and Ballard and Wyile method did the xecond value with 0.078mm. 3. The statistical significances of the correlation coefficients and average differences revealed that Ballard and Wylie method and Song etc. method exhibited the closest results with actual values. 4. In case of the each combination methods, the combination of Ballard and Wylie method and Song etc. method revealed the closest value from the actual values.

이종 탈회 건조골 및 Hydroxyapatite 제재의 골 이식이 성견 치조골 결손부 치유에 미치는 영향에 관한 비교연구

정성화,김종여,이재현 단국대학교 치의학연구소 1993 논문집 Vol.5 No.-

This study was conducted to evaluate the healing potential of hydroxyapatite and demineralized freeze dried bone in 5 dogs. Chronic periodontitis was induced by ligating elastic wire randomized as follows. The group in which only flap operation was performed was used as control. The group in which flap operation using nonresorbable nonporous hydroxyapatite (Orthomatrix) was performed was used as experimental Ⅰ. The group which flap operation using resorbable porous hydroxyapatite (Biocoral) was performed as experimental Ⅱ. The group in which flap operation using demineralized freeze-dried bone was performed was used as experimental Ⅲ. Thereafter dogs serially sacrificed at the 1,2,4 and 8 weeks and the specimens were prepared, and stained with Hematoxilin-Eosin stain for the light microscopic evaluation. The results of the this study were as follows : 1. Control group : progressive inflammatory cell infiltration till 4 weeks and epithelial undergrowth. 2. Group Ⅰ : epithelial undergrowth and new bone formed with fibrous margin around HA granule. 3. Group Ⅱ : no epithelial undergrowth and direct bone formation at the porous granule 4. Group Ⅲ : could not see epithelial undergrowth but obviously new cementum formation.

6-Exomethylene penamsulfone 유도체의 β-lactamase 저해작용

김해종,여성현,임채욱,임철부,김미영 중앙대학교 약학연구소 1996 약학 논총 Vol.10 No.-

6-Exomethylene penam derivatives were tested as possible β-lactamase inhibitors. The in vitro β-lactamase inhibitory activities were determined by a spectrophotometric assay using Type Ⅰ, Ⅱ, Ⅲ, Ⅳ and TEM β-lactamase. Their activities were compared with sulbactam, tazobactam and clavulanic acid. The 6-exomethylene sulfone derivatives were more potent than clavulanic acid and sulbactam against Type Ⅳ β-lactamase. The Z-isomers showed stronger activities than the E-isomers against TEM and Type Ⅳ β-lactamase.