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한국에서의 Human T-Cell Leukemia Virus Type-1(HTLV-1)에 대한 혈청학적 및 역학에 관한 연구
이영열,이성열,김은실,이홍복,김병국,이문호,박선양,김노경,서철원,규경채,최강원,조한익,고월청,야마구찌이찌세이 대한내과학회 1986 대한내과학회지 Vol.31 No.2
Type-C retrovirus, human T-cell leukemia virus type-l(HTLV-1), has been shown to be associated etiologically with adult T-cell leukemia, which is an endemic disease in southwestern parts of Japan. We examined the seroepidemiological characteristics of antibody to adult T-cell leukemia virus associated antigen (anti-ATLA-antibody) by the indirect immunofluorescent assay and ELISA from the healthy individuals and various diseased patients in the Republic of Korea, a country adjacent to Japan in which HTLV-1 is endemic. The results were as follows. 24 out of 9,603 individuals(0.25%) were seropiositive. The positve rate was 0.17% in males and 0.36% in females, the sex difference was female predominent relatively. HTLV-1 carriers were found 16 individuals in Seoul, 5 in Kyonggi area, 1 in Chungnam and Jonbuk, respectively, but found only 1 individual in Busan city and Jaejoo area close to southwestern parts of Japan. Positive rate to anti-ATLA-antibody seemed to be high in older age, especially at the 50s(0. 4Yo). In conclusion the prevalence rate of anti-ATLA- antibody seemed to be very low in the Republic of Korea adjacent to Japan in which HTLV-1 is endemic and no patient with adult T-cell leukemia has been found as yet. Also we noted that the Republic of Korea is not an endemic area to HTLV-1.
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이택동,유지형,신제식,배준수,이진형,이혁모 대한금속재료학회(대한금속학회) 2001 대한금속·재료학회지 Vol.39 No.4
The ordered phase was tried to disappear in 6.5% Si steel to reduce the power loss and enhance the economic interests. They were prepared by the conventional casting or spray forming method, and they were investigated using the transmission electron microscopy(TEM). The variation in the methods of preparing the specimen did not result in any difference in suppressing the ordered B2 phase in the Fe-Si binary system. It was almost impossible to suppress this ordered phase keeping the silicon level as high as 6.5% even after the heat treatment at 1000℃ for 24 hr or after hot rolling. It was necessary to change the silicon level and control the cooling rate to prevent the ordering reaction, especially, in cooling after heat treatments. The silicon level of 5.8% was obtained as a maximum desirable value.
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이동훈,목연수,장성록,권혁무,윤원영,옥영석,최용석,배동철 한국산업안전학회 1999 한국안전학회지 Vol.14 No.3
The purpose of this study is to analyze death injuries and operation troubles of urban transit. No difference was shown in death rates between Line 1 of Pusan urban transit and Line 5, 7, and 8 of Seoul metropolitan transit. And relief time by another train did not depend upon the number of crews. We concluded that thorough inspection and preventive maintenance of trains and facilities are necessary for safe and timely service of urban transit.
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방전 플라스마에 의한 CFC-12(CCl2F2)의 분해
황명환,우인성,조정국,강현춘,안형환,이한섭,강안수 한국산업안전학회 1999 한국안전학회지 Vol.14 No.3
Decomposition efficiency, power consumption, and applied voltage of CFC(Chlorofluorocarbon) were investigated by SPCY(surface induced discharge plasma chemical processing) reactor to obtain optimum process variables and maximum decomposition efficiencies. Decomposition efficiency of CFC-12 with various electric frequencies(5∼50㎑). flow rates (100∼1,000mL/min), initial concentrations(100∼1,000ppm), electrode materials(W, Cu. Al), electrode thickness(1, 2, 3mm) and reference gases(N₂, O₂, air) were measured and the products were analyzed with FT-IR. Experimental results showed that at the frequency of 10kHz, the highest decomposition efficiency of 92.7% for CFC-12 were observed at the power consumptions of 29.6W, respectively, and that decomposition efficiency decreased with increasing frequency above 20㎑ and decomposition efficiency per unit power were 3.13%/W for CFC-12. Decomposition efficiency was increased with increasing residence times and with decreasing initial concentration of pollutants. Decomposition efficiency was increased with increasing thickness of discharge electrode and the highest decomposition efficiency was obtained for the electrode diameter of 3mm. As the electrode material, decomposition efficiency was in order that tungsten(W), copper(Cu), aluminum (Al).
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급성 골수성 백혈병(M6)에 합병된 중추성 요붕증 1 예
김성연,조보연,이홍규,고창순,민헌기,김병국,김노경,신찬수,이명식,강덕현,조종태 대한내과학회 1989 대한내과학회지 Vol.37 No.2
Leukemia is known to be an extremely rare cause of diabetes insipidus. We report a case of diabetes insipidus as a complication of leukemia. An 18 year-old man was admitted because of polyuria polydipsia and fever. Bone marrow aspiration and biopsy revealed the diagnosis of acute erythroleukemia (AML, M6). On the water deprivation test, the diabetes insipidus was confirmed to be of the central type. He was managed with intranasal vasopressin for diabetes insipidus with good response. Induction chemotherapy was administered without response, and the patient died of septicemia and respiratory failure 2 months after initial diagnosis. A short review of the literature related to this subject is also presented.
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급성 심근경색증 초기 진단에 latex 응집을 이용한 혈청 myoglobin 측정의 임상적 의의
박영배,서정돈,최윤식,이영우,오병희,손대원,임하진,김유우,박명희 대한내과학회 1987 대한내과학회지 Vol.32 No.2
We evaluated the diagnostic usefulness of latexagglutination test for elevated serum myoglobin as a screening test in the early phase of acute myocardial infarction and 21 patients with chest pain mimicking acute myocardial infarction were included in this study. Result was compared with serum myoglobin level measured by radioimmunoassay (RIA) in every case. The Following results were obtained: 1) When serum myoglobin levels measured by RIA below 85ng/㎖ were regarded as normal, this test showed sensitivity of 82%, specificity of 95%. 2) In latex-agglutionation test for elevated serum myoglobin, test results were interpreted as negative, weakly positive and positive. If we regard weakly positive tests as positive, sensitivity was 93% and specificity was 62%. In contrast, if we regard weakly positive tests as negative specificity rose to 100% while sensitivity reduced to 75%. 3) Agreement rate of both test was k=0.59. It is suggested that latex-agglutination test for elevated serum myoglobin is helpful in ruling out acute myocardial infarction when test result is negative, and that it can be used as a screening test in the early phase of acute myocardial infarction because of its rapidity and simplicity in performing the procedure.
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