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김순기 ( S K Kim ),김용남 ( Y N Kim ),허순자 ( S Z Her ) 대한임상검사과학회 1991 대한임상검사과학회지(KJCLS) Vol.23 No.1
Whereas radioimmunoassay technique which is very sensitive as well as accurate has been widely used for the assay of most endocrinological hormones, numbers of related problems launched the search for many lab. techniques that can replace the use of radioisotopes. Authors employed "Enhanced Luminescence Immunoassay" (ELlA) technique as the one to assay and evaluate thyroid hormone(T3, T 4) and thyroid stimulating hormone( TSH). The results are as follows : 1. Precision rate was calculated by assaying T 3, T 4. TSH and 25 times repetitively at 3 diffeerent concentration for each-low, medium, high -. and so was judged excellent as the coefficient of variation(CV) was 5.6% 1.6% 3% (Low), 3.2%, 2 .1%, 1.5% (medium). 5 .0%, 3%. 1.5% (High). 2. Control serum sample with known assay value labelled as Low, Medium, High was tested for 20 times for each and the results are 0. 45ng/ml (0.36-0.5), 1.37ng/ml(l.07-2.34), 3.3ng/ml (2.34-3.5) for T 4 : 3.0,ug/dl(2.3-4.1), 9.2,ug/ dl(8.0-0.18), 15Jlg/dl(12.0-18.2) for T4: and 0 .16JLIU/ml (0 .8-0 .18), 5. 65JLIU/ml (4. 6--6. 8), 29.4JLIU/ml(20.06-3l.O)for TSH. They are all in permissable range shown in the parenthesis and close the mean value, and so was judged relatively accurate. 3. Comparison with other techniques. 1) For 27 samples of T 3, 31 T4 samples, 27 TSH samples which show different values from the assay values by radioimmunoassay technique, the slope was Y=0.99x+0.06, Y=0.98x+0.27, Y = x + 0. 04 (Y =ELlA, x =RIA) and the correlation coefficient was 0. 986, 0. 958, 0. 99 in good correlation, and so did not show any statistically appreciable difference (p < 0. 01, p < 0. 05) . 2) For comparison with IMx which is also a enzyme immunoassay technique, 25 samples of T3, 36 T4 samples, 33 TSH samples were tested. The resultant slope was Y = 0. 83x + 0 .17, Y = 0. 77 x + 1.82, Y = 0. 75x+0.10(Y =ELlA, x = IMx) and the correlation coefficient was 0. 938, 0. 869, 0. 896 in good correlation for each. Accroding to the above results Amerlite, a "Enhanced Luminescence Immunoassay" technique, may be regarded as a substitute for RIA technique and the E. 0. S method (Economy of Standard) was not only economic but also able to manipulate a large quantity speedily.
FMC 법에서 모형 도형제가 순알루미늄 주물의 응고와 주형의 열적거동에 미치는 영향
조남돈,김용남 ( N . D . Cho,Y . N . Kim ) 한국주조공학회 1987 한국주조공학회지 Vol.7 No.2
Full mold casting process is a new technique offering numerous advantages and promising possibilities. The present study is aimed to bring out the results of experiments carried out to study the effect of pattern coatings on the solidification of 99.5% pure aluminum plate-shaped castings in the various sand molds and the thermal behavior of the molds. The results of the investigation indicate that (i) with increase in pattern coating thickness, the relative chilling power decreases gradually for silica and increases for zircon coating, and (ii) the application of a pattern coating significantly reduces the maximum interface temperature by the mold which is more pronounced in the case of thinner mold wall. The investigation also indicates that Chvorinov`s rule is not found to be valid for the casting in the full mold, with or without pattern coating. Therefore in full mold process, the pattern coating thickness will be a very important parameter in the study of thermal behavior.
한국인의 α-Fetoprotein 과 Carcinoembryonic Antigen 참고쳐 고찰
김순기 ( S K Kim ),김용남 ( Y N Kim ),허기옥 ( K O Her ) 대한임상검사과학회 1992 대한임상검사과학회지(KJCLS) Vol.24 No.1
Various method of cancer diagnosis can be classified into two broad categories. One is to utilize the morphological changes in cellular organelles, and the other is to utilize the chemical changes in our body. Most widely used ones among these tumor-markers are a-FP developed by Abelve 1963, and CEA by Gold in 1965. Recently, these tests are in common use since they are helpful not only for cancer diagnosis but also for the monitoring of therapeutic course and the evaluation of postoperative cancer recurrence. But in Korea, there is not yet a report on the clinical reference value for these tests. So our laboratory tried to establish a reference value over a group of 3,000 normal people in various areas, and the results are summarized as follows : 1. Regional distribution of the study group was Seoul, 1.5%, Chung-buk 30%, Chung-nam 35 %, Kyeong-buk 32%, respectively. 67.5% fo them were males and 32.5% were females. The age group covered from 18 to 59. 2. The reference value for a-FP in each age group showed 7.27 ng/ml, So not showing any age difference. And there was also no difference in that both sex group, showed 7.4 ng/ml. 3. The reference values for CEA were directly related to age. 1.7 ng/ml in teen ages, 2.8 ng/ml in the twenties, 3.8 ng/ml in the thirties, 4.3 ng/ml in the forties, 5.0 ng/ml in the fifties. And there is a sex difference in that mean CEA level of male group(4.3 ng/ml) was 1.6 ng/ml higher than that of female group(2.7 ng /ml). The overall average value for the entire group examined was 3.9 ng/ml.