저선량 감마선 조사가 왕겨의 항산화능에 미치는 영향

정석문,김정한,김동열,육홍선,변명우,이승철 慶南大學校 附設 基礎科學硏究所 2002 硏究論文集 Vol.16 No.-

왕겨에 200, 400, 600, 800 및 1000 Gy의 저선량의 감마선을 조사하여 항산화능의 변화를 관찰하였다. 총 페놀 화합물의 양은 무처리구의 경우 0.184 mM를 나타내었고, 200 Gy로 감마선을 조사하였을 때는 0.215 mM로 약간 증가함을 보였으나 이후 차츰 감소하였다. 전자 공여능은 무처리구에 비해 처리구의 경우 조사 선량별로 조금씩의 차이만 있을 뿐, 조사 선량에 대한 왕겨의 전자 공여능은 유의적인 큰 변화 없이 비슷한 활성을 보였다. Fe^2+-ions 킬레이팅 활성은 무처리구의 경우 68.25%를 나타내었으며, 200, 400, 600 및 800 Cy 에서는 각각 86.45, 85.61, 86.65 및 82.84%로서 무처리구보다는 증가함을 보였으나, 1000 Gy에서는 74.67%로 감소하였다. 지질 과산화 억제능은 무처리구에 비해 처리구는 약간의 증가를 보였으나 효과는 미비하였다. We studied the effect of small-dose of γ-irradiation to rice hull(RH) for its antioxidant ability. The RH was treated with 200, 400, 600, 800, and 1000 Gy of γ-ray at 70 Gy/min. Total phenol amount of unirradiated RH was 0,184 mM, after irradiation at 200 Gy it increased to 0,215 mM, while irradiation above 400 Gy up to 1000 Gy decreased that to unirradiated level. The electron donating ability of RH did not show significant change depend on irradiation. The chelating ability for Fe^2+ of unirradiated RH was 68.25 %, while that of 200, 400, 600 and 800 Gy irradiated RH showed 86.45, 85.61, 86.65 and 82.84 % respectively, but, 1000 Gy was decreased to 74.67 %. According to TBARS analyses, inhibition ability of lipid peroxidation by RH was not affected by γ-irradiation.

위암 환자에서 절제된 림프절 수의 차이와 관련이 있는 인자

정귀애,박정희,변익건,김경종,장정환,김권천,민영돈 朝鮮大學校 附設 醫學硏究所 2004 The Medical Journal of Chosun University Vol.29 No.1

Purpose: By the definition of UICC TNM classification (fifth edition), the nodal stage of gastric cancer is based on the number of metastatic lymph nodes, which is influenced by the number of resected lymph nodes. And individual differences in the number of resected lymph nodes had been observed in patients with gastric cancer. The aim of this study is to verify the factors which are associated with the difference in the number of resected lymph nodes in patients with gastric cancer. Methods: We reviewed 613 patients with gastric cancer who underwent curative resection and D2 lymph node dissection with 15 or more resected lymph nodes. The number of resected lymph nodes was analyzed according to the characteristics of patients, the types of operation and prognostic factors of gastric cancer. Results: The mean number of resected lymph nodes per patient was 33.0 (median: 31.0, range: 15-88). The number of resected lymph nodes was significantly associated with the types of operation, the location and size of tumor, macroscopic types, depth of tumor invasion and the number of metastatic lymph nodes. Patient's age, gender and the histopathological finding's had no relationship with the number of resected lymph nodes. Conclusions: The number of resected lymph nodes from gastric cancer was different in each patient despite of same D2 lymph node dissection and it was associated with several prognostic factors of gastric cancer.

한글 옛글 자료 표현과 처리성능 개선을 위한 세벌식 한글낱자형 부호계 연구

변정용,함경수 동국대학교 경주대학 1991 東國論集 Vol.10 No.-

After Great king Sejong created Huminjeongum which originally intended to present korean phonetic sound, Hangul letter has been written nation-widely as a writing system of korean people. Since 1945, the languge and letter polcy of korean government has very volatile : 10 times as pure Hangul lettre adopted and 7 times as sino-korean character regulated. Since computer has been used to the morden korea, hangul code on computer system has been changed seveal times. First, the letter code system was regulated in 1974. Second, hangul code was altered from letter code to combination code in 1982. third, from combination code to completion code in 1987. The current completion hangul code system has a lot of problems in presenting all combining syllable and processing all application to korean language. This paper proposes three set letter code system which makes it possible to present the old and current korean character, and which improves the performance of internal processing on 51-letter code and 33-letter code system of two-set style. Developed are the related algorithms such as input/output system, sort and pattern match of hangul string. The proposed code system is based on the princlple of Hunminjeongum and ISO 2022. It is designed to make it easy to learn, easy to write and prominent to combine korean character in computer system. Therefore it is very efficient for users to apply korean language. This paper also shows a direction to revise the current completion code system.

한국인 말초 죽상동맥경화증환자에서 Stromelysin-1 유전자 변이에 관한 연구

변승재,권정남,소병준 圓光大學校 醫科學硏究所 2005 圓光醫科學 Vol.20 No.2

실시간 데이터베이스에서 경직성 트랜잭션의 최악 행동 분석

변정용 동국대학교 경주대학 1996 東國論集 Vol.15 No.-

데이터베이스와 공조하는 대부분의 경직성 실시간 시스템은 데이터가 주기억 공간에 있는 것을 가정하고 있다. 이들 시스템의 경우 우선순위 제한 규약은 우선순위 역전을 한계하기 위하여 사용될 수 있다. 본논문에서 디스크 상주 데이터 그리고 철회 및 재시동을 가진 낙관적 동시성 제어 환경을 가정한다. 여기서 고순위 트랜잭션이 디스크 접근을 요구할 때 디스크에 접근하고 있는 저순위 트랜잭션이 철회되도록 한다. 분석은 트랜잭션의 최악의 응답시간 계산을 허용하는 것이 제안된다. 특징은 입출력 채널과 CPU를 독립적으로 고려한다. Dept. of Computer Scieoce Dongguk University byunjy@wonhyo. dongguk. ac. kr. Most hard real-time systems that incorporate database components assume that the data is resident in main memory. For these system priority ceiling protocols can be used to limit priorIty inversion. In this paper, we consider disc resident data, additionally we assume optimistic concurrency control with abort and restart. Hence, when a high priority transaction requires accessing to the disc to be aborted. Analysis is presented that allows the worst-case response times of transactions to be calculated. A feature of this analysis is that the I/O channel and the CPU are considered separately.

허혈성 심질환에서 염증지표에 관한 연구

번정득,권영주,박상호,한대희,이상철,강진환,김명구,심규혁,최병조,온영근,현민수,김성구 순천향의학연구소 2001 Journal of Soonchunhyang Medical Science Vol.7 No.2

Background : Atherosclerosis is the chief underlying cause of ischemic heart disease and there is increasing evidence that inflammation is an important determinant of the development of atherosclerosis. We assessed the levels of inflammatory markers in patients with ischemic heart disease and normal group who has normal coronary angiograms. Materials and Methods : Coronary angiography was performed in 142 patients. 107 patients of ischemic heart disease(stable angina pectoris 58, unstable angina pectoris 30, Acute myocardial infarction 19) and 38 normal control subjects. We assessed the level of inflammatory markers, such as CRP, ESR, fibrinogen and leukocyte. Results : CRP, ESR and fibrinogen values of the patients with stable angina pectoris and unstable angina pectoris were higher than that of normal control group, but there were no statistical significance. Leukocyte value of the patients with unstable angina pectoris(9003.3±701.5/mm^(3)) was significantly higher than that of the patients with stable angina pectoris(6685.5±245.8/mm^(3)) and normal control subjects(6394.3±235.1/mm^(3)). CRP, ESR and fibrinogen values of the patients with acute myocardial infarction were also higher than that of normal control subjects. CRP was 3.88±2.05 mg/dL in acute mocardial infarction group, and 0.29±0.15 mg/dL in normal control subject group(p<0.05). Fibrinogen was 541.6±45.1 mg/dL in acute myocardial infarction group, 321.4±25.6 mg/dL in normal control subject group(p<0.05). Leukocyte was 10942.1±737.6/mm^(3) in acute myocardial infarction group, 6394.3±235.1/mm^(3) in normal control subject group(p<0.05). Conclusions : This study demonstrate that CRP, fibrinogen and leukocyte values of acute myocardial infarction group were significantly higher than that of control group and stable, unstable argina pectoris group. Leucokyte values were significantly elevated in unstable angina group, but CRP values were not in unstable angina group.

ATM망에서 비실시간 서비스를 위한 효율적 셀 제어 기법

김변곤,김남희,정동수,정경택,이종인 국립7개대학공동논문집간행위원회 2005 공업기술연구 Vol.5 No.-

The Guaranteed Frame Rate(GFR) service has been designed to accomodate non-real-time applications, such as TCP/IP based traffic in ATM networks. The GFR service not only guarantees a minimum throughput at the frame level, but also supports a fair share of available resources. In this paper, we propose a cell control algorithm which can improve the fairness and the throughput through the traffic control in GFR service. For the evaluation of a proposed scheme, we compare the proposed scheme with the existing scheme in the fairness and the throughput. Simulation results that the proposed scheme can improve the fairness and throughput than the existing scheme.

경상남도 산업단지별 대기오염질의 농도 특성

박정호,이근선,조인철,변은숙 진주산업대학교 환경문제연구소 1998 環境硏究論文集 Vol.2 No.-

본 연구에서는 경상남도 주요 14개 국가·지방산업단지 지역을 대상으로 실시한 제 1차, 2차 대기질 조사에 의해 얻어진 대기환경기준의 가스상·입자상 오염물질항목과 TSP중 Pb 등 주요 금속원소와 음이온 성분의 농도특성을 산업단지별로 파악한 결과 다음과 같은 결론을 얻었다. 1) 전반적으로 산업단지의 대기질은 1,2차 대기질 조사기간 중 대부분 환경기준을 만족하고 있는 것으로 나타났다. 2) 가스상 오염물질의 평균농도 범위는 SO_2 0.003∼0.033 ppm, O_3 0.017∼0.033 ppm, NO_2 0.014∼0.057 ppm, CO 0.4∼2.7 ppm의 범위를 나타냈다. 3) 입자상 오염물질의 특히 L, F, M 지점은 연평균 환경기준을 초과하는 경우도 나타났다. 4) 전체 음이온 성분의 1차 2차 조사기간 중 평균 농도는 L 〉J 〉N 〉B 지점순으로 나타났으며, 전체 원소성분의 총농도는 옥포, 마천, 유산 산업단지의 순으로 높게 나타났으나 Pb, Cr, Cd, Cu의 중금속 농도만으로는 창원, 죽도, 유산산업단지의 순으로 높게 나타났다.

정신분열병 환자 자녀에서의 위스콘신 카드분류 검사

김철권,변원탄,장우석,장정희,조진석,김명정 大韓神經精神醫學會 1998 신경정신의학 Vol.37 No.5

연구목적 : 위스콘신 카드분류 검사가 정신분열병의 취약지표를 측정하는 도구로 이용될 수 있는지를 알아보기 위한 것이다. 방 법 : 중고등학교 재학생인 정신분열병 환자의 자녀 28명과 부모중 한 명이 알코올 의존증으로 정신과적 치료를 받고 있는 환자의 자녀 18명, 그리고 정신과학적으로 건강한 부모의 자녀 41명을 대상으로 위스콘신 카드분류 검사를 시행하여 세 군간에 그 결과를 서로 비교하였다. 결 과 : 위스콘신 카드분류 검사에서 세 군간에 총 시행 횟수, 총 정답반응 퍼센트, 총 오답반응 퍼센트, 보속반응 퍼센트, 보속 오답반응 퍼센트, 비보속 오답반응 퍼센트, 개념수준 반응 퍼센트, 완성한 범주 수, 첫 범주를 완성하기까지의 시행 횟수, 한 분류범주를 지속하지 못한 횟수, 그리고 학습 효율성 등과 같은 모든 변인에서 유의한 차이가 없었다. 정상 대조군의 하위 10%에 해당되는 총 정답반응 퍼센트 점수를 절단점으로 삼아 세 군에서 그보다 낮은 점수를 얻은 피검자들의 숫자를 확인한 결과 세 군간에 유의한 차이를 발견할 수 없었다. 결 론 : 본 연구 결과는 위스콘신 카드분류 검사에 의해 정신분열병의 유전적 취약지표를 찾아낼 수 없다는 가능성을 강하게 시사한다. In order to evaluate whether Wisconsin Card Sorting Test(WCST) could be used to detect the vulnerability markers of schizophrenia, three groups such as offsprings of schizophrenic patients(n=28), offsprings of alcoholic patients(n=18), and offsprings of psychiatrically normal persons(n=41) were examined for their concept formation and abstract thinking by means of WCST. The results were as follows ; 1) No significant differences were noted in all variables of the WCST such as number of total administered trials, total correct response %, total error response %, perseverative response %, perseverative error response %, nonperseverative error response %, conceptual level response %, number of completed category, number of trials to complete lst category, number of failure to maintain a set, and learning to learn among three groups. 2) There was no difference in the number of cases with extreme low WCST total correct % of lower 10% of the normal controls among three groups. These results suggest that WCST could be an ineffective instrument for using to detect the vulnerability markers of schizophrenia.

Bovine botulism outbreak associated with incidental consumption of presumably contaminated leftover food

( Jae Won Byun ),( Kyung Hyun Lee ),( Ha Young Kim ),( Soon Seek Yoon ),( Ji Youl Jung1 ),( Woo Seog Jeong1 ),( Jae Ku Oem ),( Jong Soo Lim ),( Myoung Heon Lee ),( You Chan Bae ) 한국예방수의학회(구 한국수의공중보건학회) 2013 예방수의학회지 Vol.37 No.1

Nine cattle among 18 in a native Korean herd died or were euthanized within 3 days. The affected cattle showed cowshed. The pigs and dogs had been fed leftover food originating from nearby restaurants, and the cattle could presumably reach the contaminated food in the pig troughs. Necropsy revealed a few chicken bones and red pepper pieces as well as large amounts of grain and rice straw hay mixed in the rumen. Botulism type D was isolated in the ruminal contents of one of the cattle. We speculated that the outbreak was associated with the cattle incidentally eating presumably contaminated leftover food from the pig trough.