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정철운,이정일 한국생태학회 2004 Journal of Ecology and Environment Vol.27 No.3
This study was conducted to clarify the preference and habitat condition of small mammals at the Hyeongsan river in Ulsan, Gyeongju, and Pohang from January 2003 to July 2003. In the study sites, total 111 individuals of Apodemus agrarius, Rattus norvegicus, and Micromys minutus were captured in study sites. The most abundant species were Apodemus agrarius, 79.2 percent, among the captured small mammals. Density of habitation was significantly higher in agricultural land than in either private house or woods. However, they were more abundant in paddy field area than in agricultural land. A number of captured small mammals were higher in herbaceous rather than three other vegetation types. Existent of river embankment and its type were important factors affecting the spatial distribution of the individuals. Preference of small mammals were significantly lower in revetment block area rather than in none or nature-stone mat area. There was significantly correlationship between the depth of water and the number of captured small mammals. A number of captured small mammals were clearly increased in reference to decreasing depth of water in study site. In conclusion, the following factors such as the vegetation structure, depth of water, types of land use and types of river dike could be affected the spatial distribution of small mammals in the study sites. 형산강 수계 주변을 대상으로 하여 소형 포유류의 서식현황 및 서식지 선호도를 측정하기 위하여 2003년 1월부터 7월에 걸쳐 조사하였다. 서식이 확인된 소형 포유류는 등줄쥐(Apodemus agrarius), 시궁쥐(Rattus norvegicus), 멧밭쥐(Micromys minutus) 등 3종이었다. 주요 우점종으로는 88개체로 79.20%를 보인 등줄쥐였으 며, 다음으로 시궁쥐와 멧밭쥐의 순을 보였다. 소형 포유류의 서식지 선호도는 수계 주변의 토지이용 유형과 경작지, 식생유형, 그리고 제방의 설치 유무와 수심 등 여러 가지 서식지 구조에 따라 다양하게 나타났는데 민가와 삼림에 비하여 경작지에서 특히 논에서의 선호도가 높았으며, 식생 구조별로는 초지의 선호도가 높게 나타났다. 하천제방의 유무도 소형 포유류의 서식에 영향을 미쳤는데 제방이 조성되지 않은 지역이나 자연석 매트 공법으로 이루어진 지역의 경우 소형 포유류의 서식에 부정적인 영향을 미치지 않는 것으로 조사되었으나, 콘크리트 호안제방의 경우 이들의 공간적 분포에 상당한 영향을 미치는 것으로 나타났다. 수계 가장자리 의 수심 또한 소형 포유류의 서식에 영향을 미쳤는데 수심이 얕아질수록 소형 포유류의 서식밀도는 높게 나타났다.
Laparoscopic Treatment of Appendicovesical Fistula
정철운,김경아,정재승,박동수,홍재엽,홍영권 연세대학교의과대학 2010 Yonsei medical journal Vol.51 No.3
A 23-year-old man had a history of intermittent episodes of urinary tract infection with associated low abdominal pain for 15 years. Persistent bacteriuria even with prolonged antibiotics was the reason why he was referred to our hospital. Laboratory tests were normal except pyuria and growth of Escherichia coli in the urinary samples. Cystoscopy revealed a small slit-like opening on the right lateral wall of bladder dome. We found some air within the bladder and a suspicious communicating tract between the appendix and bladder on a CT scan. With a strong impression of appendicovesical fistula, a laparoscopy was performed to confirm a diagnosis and to remove the appendicovesical fistula resulting in a satisfactory result without any complication.
도라지(Platycodon grandiflorum)의 임상적 효과에 대한 체계적 문헌 고찰
정철운,김선조,Nguyen Hoang Anh,이은구,김태하,권성원,양현옥,이슬지 한국생약학회 2021 생약학회지 Vol.52 No.1
Platycodon (Platycodon grandiflorum) is used as a food and medicinal ingredient worldwide, particularly in Northeast Asia. Although a large number of studies have been conducted to determine its medicinal efficacy, there is still a paucity of literature summarizing the clinical activity of Platycodon. In this systematic review, we aimed to summarize the clinical efficacy of Platycodon. All literature describing the clinical efficacy of Platycodon was collected from international databases, and relevant papers were carefully evaluated for eligibility. Data were extracted from the selected papers and quality evaluation was conducted in accordance with the standards provided by the National Institutes of Health (NIH), with all procedures being conducted in accordance with PRISMA 2009 checklist guidelines. After the removal of 342 papers, 644 studies were fully screened for their titles and abstracts, among which, 19 studies were finally selected for full summarization. Extraction of data indicated evidence of the effectiveness of Platycodon in the treatment of respiratory system-related diseases and cancer, and in the provision of immunity. However, we found that the quality and objectivity of evaluation, management of variable factors, sample size, and reproducibility were generally poor. Although Platycodon has shown potential antiviral, antibacterial, anticancer, and antidepressant effects, and promotion of immunity in clinical settings, it was not possible to integrate objective indicators to conduct a meta-analysis due to the lack of literature and insufficient studies. More investigations in the clinical setting should be conducted to confirm the functional effects of Platycodon.
정철운 한국보건의료인국가시험원 2021 보건의료교육평가 Vol.18 No.-
This study aimed to investigate the degree to which newly appointed medical faculty members at the Catholic University of Korea areaware of Harden and Crosby’s 12 educational roles and to identify their preferred educational roles. A 12-item survey questionnaire wasdistributed to 110 participants, and 100 responses were included in the analysis. The respondents gave the highest score to “clinical orpractical teacher” and the lowest score to “curriculum planner” for their current personal competencies. For their preferred personal future competencies, they assigned the highest score to “on the job role model” and the lowest score to “student assessor.” They gave almost equally high values to all 12 roles. However, individual faculty members had different preferences for educational roles. Accordingly, medical schools need to plan and implement customized faculty development programs, and efforts to provide appropriate educational roles according to individual faculty members’ preferences are needed.