서울의 Penicillinase Producing Neisseria Gonorrhoeae 발생빈도(1996)

김재홍,황동규,전재홍,김윤석,김중환,김용준,이창균,임동진,김현수,조창근,김경문,박상훈,전우형,김희성,이호정,차명수,김갑형,김형석,김석우,황지환,박병순,권오상,이민수,송기훈,성소영,이인섭,부태성 대한화학요법학회 1999 대한화학요법학회지 Vol.17 No.2

Background : In recent years, gonorrhea has been panedemic and remains one of the most commom STDs in the world, especially in developing countries. Objective & Methods: For the detection of a more effective therapeutic regimen and assessing the prevalence of PPNG, we have been trying to study the patients who have visited the VD Clinic of Choong-Ku Public Health Center in Seoul since 1980 by means of the chromogenic cephalosporin method. Results: In 1996, 139 strains of N. gonorrhoeae were isolated, among which 53(39.0%) were PPNG. Conclusion: Our results suggests that after a peak of 74.3% in 1993, the prevalence of PPNG in Seoul is gradually declining.

경련성 환아 부모들의 인식에 대한 연구

이경화(Kyoung Hwa Lee),서은숙(Eun Sook Suh),김영창(Yong Chang Kim),김창휘(Chang Hwi Kim),이동환(Dong Whan Lee) 대한소아신경학회 1996 대한소아신경학회지 Vol.3 No.2

Convulsive disorder is the most part of the pediatric neurologic disease. As far as the treatment of convulsive disorder concerned, we must consider familys' understanding, and the close cooperation between the epileptic child, parents, and doctors. We compared to Kim's report in 1985, to study the change of parents of epileptic children thinking. A prospective study was undertaken the analysis of 100 epileptic children parents visited to the pediatric dept, of Soonchunhyang university hospital from May to July, 1995. Psychological assessment, questionnaires which contains 17 items were given them, and these items were compared to Kims report in 1985 The results were as follows: 1) Parents of epileptic children answered convulsive disorder has influenced to children growth and development( 60.8% in 1985, 65.0% in 1995 ). 2) For asking the causes of children disease, 40.5% of them in 1985 and 50.0% of them in 1995 answered to uncertain, but only 7.8% of them in 1985 and 7.0% of them in 1995 answered to relation with familial inheritance. 3) The feelings at time of the diagnosis were gloomy or uncomfortable: 52.3% in 1985, 38.0% in 1995 and shameful 28.1% in 1985, 9.0% 1995. parents had belived in the epilepsy was treatable disease: 41.0% in 1995. 4) According to the this survey, patients explained reasons why their children take the medication increased from 23.5% in 1985 to 65.0% in 1995. 5) Only family, knew that their children had the convulsive disorder about 50.3% in 1995 and 22.0% in 1995. Family, patients and other people except family knew that their children had the convulsive disorder about 6.5% in 1985 and 43.0% in 1995. 6) The parents opinion and expectation toward the medical doctors were that they wanted to get full explanation for the disease 81.0% in 1985 and 35.1% in 1995, and others were explantation about toxicity and side effects of the medication and advises for the childrens life and activities.

林土의 有機物의 分解速度와 無機養料의 垂直分布에 關한 考察

金遵敏,張楠基,鄭玩鎬 서울대학교 교육대학원 학술연구회 1966 論文集 - 서울대학교 교육대학원 Vol.3 No.-

Kim Choon Min, Chang Nam Kee and Chung Whan Ho: Decomposition rate of plant residue and the vertical distibution of mineral nutrients in the woodland soil. The relationship between decomposition rate of litter and the amount of mineral nutrients dispersed to the soil horizons were studied on the oak and pine forest stand. The results are as follows: 1. Decomposition rate of litter was highest in the F horizon of the oak stand, however in the pine stand it was highest in H horizon. 2. The correlation coefficients between decomposition rate and humus, organic carbon, moisture content, calcium, phosphorus, and nitrogen in the pine stand are; 0.90, 0.98, 0.76, 0.98, and 0.88, in oak stand; 0.97, 0.93, 0.92, 0.97, 0.74 and 0.73. 3. Factors which affect the decomposition rate of litter are humus, organic carbon, moisture content, calcium, phosphorus and nitrogen. 4. Among the variables, PH, moisture content and phosphorus under the oak and pine forest showed significant differences in each horizon. 5. C/N ratio of pine stands is higher than that of oak stands studied. 6. The vertical distribution of mineral nutrients is highly related with the amount of humus accumulated on top soil.

장관골에 발생한 거대세포 종양의 국소 재발에 관한 연구

김인,김정만,이승구,장한,김용식,김성수,한창환,김형관 가톨릭 중앙의료원 가톨릭 암센터 1991 가톨릭 암센터 論集 Vol.5 No.1

Improvement of Thermomechanical Fatigue Life in Nitrogen Alloyed 316 Stainless Steel

Kim, Dae Whan,Han, Chang Hee,Ryu, Woo Seog Trans Tech Publications, Ltd. 2005 Materials science forum Vol.475 No.-

<P>Fatigue tests of type 316 and 316LN stainless steel were conducted at RT and 600ı, 0.8~1.5% strain range for low cycle fatigue (LCF), 300~600ı, 0% strain range for thermal fatigue (TF) and 300~600ı, 2% strain range, in-phase or out-of-phase for thermomechanical fatigue (TMF). LCF, TF, and TMF lives were increased but saturation stresses were decreased with the addition of nitrogen. The higher temperature was the lower TF life at a same temperature change. The minimum temperature change for TF failure was more than 100ı. TMF life was higher at inphase condition than at out-of-phase condition. Fracture mode was transgranular for LCF and outof- phase of TMF and almost transgranular and small intergranular for TF and in-phase TMF.</P>

상완골 근위부 골절에서 클로버잎형 금속판을 이용한 치료

김진환,주석규,이창수,김동현 인제대학교 2006 仁濟醫學 Vol.27 No.-

Purpose : To evaluate the result of the clover-leaf plating for the treatment of the proximal humeral fracture. Materials and Methods : We performed open reduction and internal fixation with clover-leaf plate in 15 displaced proximal humeralfractures. The average follow-up period was 12months. We performed radiographic study to check bony union and applied Neer's score to evaluate shoulder function. Results : All 15 fractures consolidated at 5 months average. Shoulder function was classified as 7 excellent, 4 satisfactory and 4 unsatisfactory. There was no infection or avascular necrosis of humeral head. Impingement syndrome was detected in 2 patients. Conclusion : When we perform open reduction and internal fixation for proximal humeral fractures, clover-leaf plate can give us rigid fixation with its proximal multi-hole.

역상 액체 크로마토그래피에 의한 금속-2-hydroxy-arylazopyrazolone 유도체 킬레이트의 용리거동에 관한 연구(ll)

김은경,강창희,김인환,이원 濟州大學校 基礎科學硏究所 1994 基礎科學硏究 Vol.7 No.1

Ni(Ⅱ), Cu(Ⅱ), Co(Ⅲ), 및 Cr(Ⅲ)이온과 2-hydroxy-arylazopyrazolone 유도체들 사이에 형성하는 킬레이트들에 대한 역상 액체 크로마토그래피에서의 용리 메카니즘을 열역학적인 접근방법으로 고찰하였다. van't Hoff plot에 의한 온도와 용량인자(k')와의 상관관계를 조사한 결과 온도와 용량인자와의 관계는 양호한 직선성을 나타냈으며, 온도 변화와 무관한 동일한 메카니즘에 의해 분리됨을 알 수 있었다. van't Hoff plot으로부터 엔탈피 (△H)°, 엔트로피 (△S)°를 구하고, 엔탈피와 용량인자와의 상관관계를 조사한 결과 [pm(2-OH)(5-Cl)PaPz] (r=0.787)을 제외한 대부분의 킬레이트들은 비교적 좋은 직선성(r=0.980∼0.999)을 보였고, 보정온도(β) 역시 일정한 값을 나타내었다. 이것은 금속 2-hydroxy-arylazopyrazolone 킬레이트와 정지상 (C18)과의 상호작용이 등평형 거동을 하고 있음을 의미한다. 또한 엔탈피와 용량인자와의 상관관계로부터 구한 보정온도는 374.63∼806.9k 범위의 값을 나타냈고, 이들 결과로부터 역상 액체 크로마토그래피에서 금속 킬레이트의 머무름 메카니즘은 소수성 효과에 기인하고 있음을 확인할 수 있었다. The elution behaviors in reversed-phase liquid chromatography were investigated thermodynamically for 2-hydroxy-arylazopyrazolone chelates with Ni(Ⅱ), Cu(Ⅱ), Co(Ⅲ), Cr(Ⅲ) on Novapak C18 column. There was a good linear dependence of the capacity factor(k') on the variations of column temperature in van't Hoff plot. From this result, it was confirmed that the retention mechanism of these chelates in the reversed phase liquid chromatography system was invariant under the condition of various temperatures. For the most cases of the chelates studied, the dependence of capacity factor(ln k') on enthalpy (-△H)°, calculated by van't Hoff plot showed a good linearity (r=0.980∼0.999) except [pm(2-OH)(5-Cl)PaPz](r=0.787) and also the compensation temperatures(β) showed constant values. The range of compensation temperature values calculated from the slope of -△H°vs ln k' plots was 374.3∼806.9k. It was suggested that the retention of metal-2-hydroxy-arylazopyrazolone chelates in the reversed phase liquid chromaography system was largely affected by the hydrophobic effect.

HASA 교육과정 기반의 과학캠프 프로그램 개발과 개발 과정 분석

김창만,김인환,차정호,황북기,최정훈 大邱大學校 師範大學 附設 敎育硏究所 2009 學校敎育硏究 Vol.5 No.1

본 연구에서는 학교 밖 탐구활동의 실태 분석 결과와 수공적 기능이 강조된 HASA 교육과정 기준안에 근거하여 체험 중심 과학캠프 프로그램의 개발 내용과 과정을 분석하였다. 과학캠프 프로그램을 개발하고 적용하는 과정에 대해서는 개발자들과 운영자들이 기획한 자료와 면담 내용을 바탕으로 개발과정에서의 문제점과 개선방안을 분석하였다. 분석한 캠프 프로그램은 개발진이 설정한 개발 방향과 수업 모형을 토대로 과학 강연, 과학 체험학습, 과학 경연, 탐구주제 토론으로 구성되었다. 이 프로그램들은 HASA 교육과정에서 강조하는 수공적 기능, 탐구, 지식, 태도를 모두 포함하였다. 프로그램의 개발 과정에 대한 분석한 결과, 개발 기관의 인적 물적 인프라는 부족함이 없었으나, 프로그램 개발자 중 과학교육학 전공자가 부족하다는 점과 참가 대상 및 비용 측면에서 문제점이 지적되었다. In this study, practice-centered science camp programs developed based on the HASA science curriculum standard and its developmental processes were analyzed. For this purpose, materials related with development of programs and interview protocols were overviewed, and the shortcomings and revision points of the science camp were introduced. The camp programs included science lecture, science experiment, science contest, and inquiry topic discussion. These were based on manipulative skill, inquiry, knowledge, and attitude which were emphasized in HASA curriculum. As a results of analysis, we found that the institutions had enough infrastructures. However, there was no expert in science education, and had some problems in participant's school grade level and participation fee.

악교정 골성형술후 약관절 장애의 변화

김명래,박창환,성만호 大韓顎顔面成形再建外科學會 1993 Maxillofacial Plastic Reconstructive Surgery Vol.15 No.3

Sixty four patients were followed-up for over 6 months following the orthognathic surgeries and were examined for the Temporo-mandibular joint dysfunction. The results are as follows: 1. Of 64 patients, 9(14.1%) had been suffered from TMD preoperatively : 47% in the prognathism and 46.2% in the laterognathism. 2. Following the orthognathic surgeries, 7 of 64 patients(10.9%) complained TMD, and 55.6% of the TMD patients resulted in significant improvement. 3. By the type of deformities, laterognathism with TMD could be expected to be improved in 30.8%, while 7.7% in the prognathism. 4. Non-rigid fixation resulted in higher incidence of TMD than the Rigid fixation after the SSRO ; 4 of 15(26.5%) and 2 of 25(8.0%) respectively.

당뇨병성 동결 견에서 혈관내피 세포 성장인자의 출현

김용환,권순용,김진영,박일중,조윤경,한창환 대한정형외과연구학회 2003 대한정형외과연구학회지 Vol.6 No.2