부안 유천리 도자기의 과학적 분석

강현삼,이한형,박기철,김건한,서만철,서정호,최기영 공주대학교 문화재보존과학연구소 2003 문화재과학기술 Vol.2 No.1

전북 부안 유천리 청자요지에서 수습된 청자편 11점의 태토 및 유약에 대하여 화학조성을 분석하고, 기 발표되어진 문헌의 청자데이터들을 종합하여, 이와 비교함으로써 본 시료의 도자특성과 및 산지에 대한 정보를 유추하였다. 태토의 주요산화물 분석에는 XRF를 이용하였으며, 유약의 주요산화물분석에는 EPMA를 이용하였다. 태토 중 17개 미량성분의 분석에는 ICP-MS를 이용하였고, 자료의 비교분석에는 Seger식에 의한 방법과 주성분분석법에 의한 통계처리방법을 병행하였다. 태토의 주요산화물에 대한 비교분석결과 유천리 청자는 Seger 식과 주성분분석에서 RO_(2)와 RO+R_(2)O가 6~8 및 0.3~0.38 mole로, 또 높은 SiO_(2)함량과 낮은 Na_(2)O, CaO의 함량으로 전북지역의 데이터 범위에 분포함을 볼 수 있었다. 유약의 주요산화물에 대한 비교분석결과에서는 Seger식과 주성분분석에서 모두 명확한 지역구분이 나타나지 않았으며, 따라서 유천리 청자 역시 명확한 지역적 특성을 구분하기 어려웠다. 태토중 미량성분의 주성분분석에 의한 통계처리결과 광주 충효동 도편들을 제외하고는 뚜렷한 지역간의 구분을 관찰하기 어려웠다. The characterization of chemical properties and analogy of manufactured origin for the eleven celadon sherds collected in Yuchunri, Buan were performed by analyzing their body and glaze compositions and compared with previous data reported. The chemical compositions of the body and glaze were determined by XRF and EPMA, respectively. The trace elements of the body were also determined by ICP-MS. The Seger analysis and PCA were used to compare the major compositions of body and glaze of the potteries we found with previous data. The Celadon sherds from Yuchunri are distributed in a range of Chonnam potteries considering RO_(2) and RO+R_(2)O are 6~ 8 and 0.3 ~O.38mole, respectively and also high in SiO_(2) and low in Na_(2)O and CaO concentrations in the comparison between the potteries for the major compositions of the body. Differences of the chemical characteristics of those potteries between the provinces were not clear in comparison of the glaze compositions and trace element of the body.

병원 도착 전 사망 환자의 사인기재에 관한 고찰

강용선,이경룡,박인철,조광현,김승호,이한식 대한응급의학회 2001 대한응급의학회지 Vol.12 No.4

Background: To the emergency physician, issuing a death certificate is becoming a burden as the DOAs(Deaths on Arrival) have increased in recent years. We analyzed the agreement on the causes of death issued by emergency physicians and attempted to find out whether emergency physicians complied with the guidelines for issuing death certificates. Material & Method: A survey questionnaire containing twelve pre-selected DOA cases which were supplemented with relevant past medical history and physical examination was used. The cases, with varying causes of death, were chosen from the medical records of DOA patients who presented to the emergency department at Severance Hospital, Yonsei University College of Medicine, from January 1997 to December 2000. The questionnaires were sent to 60 emergency physicians(22 specialists and 38 residents) at 22 university-affiliated teaching hospitals and 2 general hospitals across the nation. They were asked to identify the most probable direct cause of death for each of the 12 cases. The same questionnaire was sent to medical examiners at the National Institute of Scientific Investigation and to a Korean emergency physician at Albert Einstein College of Medicine in New York, USA. We also included an open question about the optimal age for the use of 'senility' as a cause of death. Results: All 60 emergency physicians responded to the survey. The average number of causes of death per case was 9.7(7∼ 14). The range of concordance of causes of death was 23.3% to 66.6%. Out of a total of 720 causes of death given by the emergency physicians,35(4.9%) failed to adhere to the death certification guidelines, Also, 210 causes of death were not listed in the Korean classification of standard causes of death. Interestingly, the medical examiner answered 'unknown etiology' and the emergency physician in the USA answered 'cardiopulmonary arrest' or 'respiratory arrest' in most cases. Regarding 'senility' as a cause of death, 22 physicians(36.7%) thought the optimal age was over 80 years. Conclusion: A significant lack of agreement exists in determining the cause of death for the DOA patients arriving at emergency departments, Therefore, an all-out effort is essential to find ways to improve and resolve this situation. As the death certificate is a legal document and a basis for vital statistics, emergency physician should seek a rational consensus to improve and resolve these inconsistencies.

광범위 베타 락탐계 항생제 분해 효소를 생성하는 폐렴간균에 의한 균혈증이 발생한 환자에서 감영의 위험 인자 및 치료 결과

강철인,김성한,방지환,김홍빈,박상원,최영주,오명돈,김의종,최강원 대한감염학회 2003 감염과 화학요법 Vol.35 No.2

목적 : 본 연구는 ESBL을 생성하는 K. pneumoniae에 의한 균혈증 환자에서 감염의 위험 인자 및 치료 결과를 알아보고자 시행하였다. 방법 : 1998년 1월부터 2002년 4월까지 혈액 배양 검사에서 동정된 K. pneumoniae를 대상으로 NCCLS guidelines과 이중 디스크 확산법(double-disk diffusion test)을 이용하여 ESBL 생성 여부를 확인하였다. ESBL 생성 균주에 의한 균혈증 환자 60명(환자군)에 대해 ESBL을 생성하지 않는 균주에 의한 균혈증 환자들(대조군)을 연령, 성별, 균혈증 발생 시점을 고려하여 1:2 또는 1:3으로 배정하였다. 총 159명의 대조군을 선정하였고 후향적인 환자-대조군 연구를 시행하였다. 결과 : 환자군과 대조군 사이에 연령, 성별, APACHE Ⅱ score, 주된 감염 부위의 유의한 차이는 없었다. ESBL을 생성하는 K. pneumoniae에 의한 균혈증이 발생할 독립적인 위험 인자에는 요관 삽입, 균혈증 발생 이전 72시간 동안 침습적인 시술을 받은 경우, 균혈증 발생 이전 30일 동안 투여받은 항생제 개수가 있었다. 초기 항생제 치료 72시간 후의 반응을 평가하였을 때, 완전 반응(complete response)은 대조군에서 더 많았고(13.3% vs. 40.3%, P<0.001), 치료 실패(treatment failure)는 환자군에서 더 많았다(33.3% vs. 11.9%, P<0.001). 7일 사망률은 환자군에서 20% (12/60), 대조군에서 15.6% (25/159)이었고(P=0.451), 30일 사망률은 환자군에서 30% (18/60), 대조군에서 24.5% (39/159)이었다(P=0.410). ESBL 생성 균주에 의한 균혈증이 있는 환자들에서 최종 항생제 치료가 부적절했던 환자들을 제외하고 30일 사망률을 분석하였을 때 효과적인 항생제 치료의 지연은 사망률을 높이지 않았다(11.1% vs. 9.1%, P=1.000). 결론 : ESBL을 생성하는 K. pneumoniae에 의한 균혈증이 있는 환자에서 초기 항균제 치료 72시간 후의 치료 반응률은 낮지만 사망률은 유의하게 증가하지 않았다. 원인균이 동정된 후 최종 치료 항생제의 선정이 적절하다면 초기에 효과적인 항생제 투여의 지연은 사망률을 유의하게 증가시키지는 않았다. Background : This study was conducted to evaluate risk factors for infection and treatment outcome of bloodstream infection due to extended spectrum β-lactamases(ESBL)-producing K. pneumoniae. Methods: ESBL production was evaluated by NCCLS guidelines and/or double-disk synergy test in K. pneumoniae blood isolates stored from January, 1998 to April, 2002. Sixty patients with bloodstream infection due to ESBL-producing K. pneumoniae (case patients) were compared with 159 matched control patients with bloodstream infection of non-ESBL-producing K. pneumoniae. Retrospective case-control study was performed. Results : There were no significant differences in age, sex, APACHE Ⅱ score, and the primary site of infection between the case and control groups. In multivariate analysis, significant independent risk factors associated with bloodstream infection due to ESBL-producing K. pneumoniae were urinary catheterization, invasive procedure within previous 72 hours, and the number of antibiotics administered within previous 30 days. In clinical response at 72 hours after initial antibiotic treatment, complete response rate was higher in the controls (13.3% vs. 40.3%, respectively, P<0.001), however, treatment failure rate was higher in the cases (33.3% vs. 11.9%, respectively, P<0.001). Overall 7-day mortality rates in the cases and the controls were was 20% (12/60) and 15.7% (25/159) (P=0.451), respectively, and overall 30-day mortality rates were 30% (18/60) and 24.5% (39/159), respectively (P=0.410). When the patients with bloodstream infection of ESBL-producing organism were evaluated and the patients who received inadequate definitive antibiotic treatment were excluded, delayed effective antibiotic treatment was found to be not associated with higher mortality. Conclusion : In patients infected with ESBL-producing K. pneumoniae bacteremia, clinical response rate at 72 hours after antimicrobial therapy was lower, but the increase of mortality rate was not significant. Delayed effective antibiotic treatment was not associated with higher mortality, when definitive appropriate antibiotic treatment was prescribed.

황색포도구균의 균혈증에서 초기 항생제 치료가 예후에 미치는 영향

김성한,박완범,이기덕,강철인,최영주,김홍빈,박상원,김의석,오명돈,김의종,최강원 대한감염학회 2002 감염 Vol.34 No.5

Canine juvenile cellulites의 진단과 치료 증례

황철용,유종현,강형석,윤화영,한홍율 한국임상수의학회 2002 한국임상수의학회지 Vol.19 No.4

Canine Juvenile cellulitis was diagnosed in 2 puppies hospitalized in Veterinary Medical Teaching Hospital of Seoul National University. Characterized dermatological problems were presents of scale, crust, purlent exudation and alopecia limited on their face. On cytologic examinations of direct impression smears for the lesions, numerous neutrophils and macrophagies were observed. No bacteria and fungus were noted. Treatments with administration of predinisolone and antibiotic orally combined with topical shampoo treatment had good results for the two puppies.

콜레스테롤 생합성 저해제 검색법의 개발

임종철,이남훈,김한균,염형렬,이대호,강현석,류형선,명재일,김완,신부안 全南大醫大 2001 전남의대학술지 Vol.37 No.2

Space Syntax 방법론에 의한 농촌마을 공간분석

황한철,강 구 한경대학교 2005 論文集 Vol.37 No.-

The researches on the spatial structure analysis have been mainly accomplished with the qualitative analysis approaches, but these have been not examined closely the attributes of spatial structure. The Space Syntax which is one of the tools of spatial structure analysis has been applied usefully at home and abroad in order to analyze quantitatively the spacial structure and to be clear logically the physical structure. This study, firstly, introduced the fundamental notions of Space Syntax and analyzed its applied researches. The Space Syntax method was used in order to systematically describe and analyze the spatial configurations on 22 rural villages. On the basis of integration and depth value we classified four types which was provided for the characteristics of spatial structure of rural villages.

갈륨합금과 아말감의 전기화학적 부식거동 비교

고영무,최한철,강성남,강희영,이승윤 대한치과기재학회 1998 대한치과재료학회지 Vol.25 No.3

A gallium based alloy(GA) that was developed as a substitute for dental amalgam was investigated for electrochemical corrosion behavior in 4 kinds of electrolytes(1% lactic acid, 0.05% HCI, Modified Fusayama's artificial saliva, and 0.9% NaCl). The related corroded microstructure were examined and microanalyses were conducted using ICPES. Polarization tests were conducted by scanning from -1,500㎷ to 1,000㎷(vs.SCE) at 75㎷/min. The obtained results were as follows: 1. GA showed wide passivation area next to SYB in artificial saliva, suggesting good stability. 2. The amounts of Sn, Cu released from GA were similiar to those of CAV, and decreased in the order of KAT, SYB. 3. All of specimens were observed pits at the area of pores in electrolytes containing chloride ions, and forming much corrosion products in 1% lactic acid and artificial saliva after corrosion test. 4. From the surface analyses of XRD, GA showed much corosion products containing gallium at the surface after corrosion test. In conclusion, the corrosion resistance of GA was lower than that of SYB and similiar to that of CAV and KAT.

표준치료에도 불구하고 3차례나 반복해서 발생한 삼일열 말라리아

이해영,한주용,이기덕,박완범,김성한,강철인,문정주,오명돈,최강원 대한감염학회 2002 감염 Vol.34 No.6

동종골수이식 환자에서 발생한 지역사회발생 Parainfluenza virus 3형 폐렴 1예

신종욱,조요한,강철인,김성한,이상윤,김의석,오명돈,이환종,박선양,김병국,최강원 대한감염학회 2002 감염 Vol.34 No.5