Showing papers by "Chonbuk National University published in 1986"
TL;DR: In this article, the orientation of phyllosilicate grains changes discontinuously from being preferentially parallel to bedding to being parallel to cleavage, and crystal imperfections as expressed in layer terminations, low angle grain boundary-like features and other defects decrease in density.
64 citations
TL;DR: Paleomagnetic results have been obtained from ten Korean sedimentary rock formations ranging in age from Permian to Cretaceous as mentioned in this paper, and the results indicate that the Korean Peninsula has not been subjected to rotational movement relative to the Asian continent since Cretages.
Abstract: Paleomagnetic results have been obtained from ten Korean sedimentary rock formations ranging in age from Permian to Cretaceous. The magnetizations of almost all the rocks from Permian to Jurassic formations have been severely overprinted. Estimation of paleomagnetic direction of the period between Permian and Jurassic is hindered by this. The Cretaceous rocks from the Gyeongsang Supergroup, however, have recorded the paleomagnetic direction at the period of formation of sedimentary rocks during Cretaceous. Some strata in the Hasandong Formation of lower part of the Gyeongsang Supergroup show the reversed magnetization which is presumably ascribed to reversed magnetic polarity epoch of M-series in Mesozoic polarity scale. Paleomagnetic direction of the upper part of the Gyeongsang Supergroup (Middle to Late Cretaceous) is estimated to be Dec=28.4°, Inc=58.2° and α95=6.4°. The pole position of Middle to Late Cretaceous obtained for the Korean Peninsula (202°E, 67°N) is in good agreement with other Cretaceous data for the Asian continent, implying that the Korean Peninsula has not been subjected to rotational movement relative to the Asian continent since Cretaceous.
21 citations
18 citations
TL;DR: Trachelobdella sinensis was found in Cyprinus carpio nudus and the morphological chararacteristics were described.
Abstract: Trachelobdella sinensis was found in Cyprinus carpio nudus. The morphological chararacteristics were described. It is the first record of Trachelobdella sinensis in Korea(summarized from text).
6 citations
TL;DR: The results suggest that the fifth antigen may be specific antigen for the immunodiagnosis of bovine fascioliasis.
Abstract: In order to obtain the most specific and sensitive antigen from crude antigens of Fasciola hepatica for the immunodiagnosis of bovine fascioliasis by the enzyme linked immunosorbent assay(ELISA), phosphate buffered saline extract of F. hepatica was prepared. The crude extract was fractionated into 7 antigens using Sephadex G-100 column chromatography. Seven fractionated antigens were applied to ELISA, precipitation test and intradermal test, respectively. Results obtained are as follows: The specificity (95 per cent confidence interval in negative sera of bovine fascioliasis; Mean+2 x SD of absorbance ) of the first (MW>150,000) and the second antigens (MW 120,000) were 93.7 per cent, but those of others including crude antigen showed 100 per cen.t. The sensitivity (positive sera of bovine fascioliasis having higher values with compared to the criterion) of the first, the sixth (MW 16,000) and the seventh antigen (MW<5,000) were 91.6 per cent, 87.5 per cent and 0 per cent, respectively, but those of others showed all 100 per cent. The absorbance by ELISA using the fifth antigen (MW 26,000) was 8.43-folds higher in the positive sera than that in the negative sera. This could be used as one of the most specific antigens for the immunodiagnosis of bovine fascioliasis. In Ouchterlony test, precipitin lines were not found in the sera naturally infected with F. hepatica, but some were found in the sera of rabbits immunized with the crude antigens. The numbers of precipitin lines in the sera of rabbits were different in the different fractionated antigens. They were 6 in the crude, 2 in the second and the third antigens, 1 in the forth, the fifth and the sixth antigens and absent in the seventh antigen, respectively. The wheal size for the bovine infected with F. hepatica was 2.46+/-0.15 cm in the intradermal test antigen (saline extract of F. hepatica) supplied by the Veterinary Research Institute, Rural Development Administration, Korea. The wheal size of the first, the second and the third antigens were larger than that of intradermal test antigen, whereas those of the forth, the fifth, the sixth and the seventh antigens showed smaller than that of the intradermal test antigen. The results suggest that the fifth antigen may be specific antigen for the immunodiagnosis of bovine fascioliasis.
1 citations
TL;DR: The results suggest that the increase in 2,3-DPG with hemodialysis is probably caused by an increase of pH and an increased glucose utilization.
Abstract: The present study is an investigation of the mechanism of changes in erythrocyte 2,3-diphosphoglyceric acid (2,3-DPG) in patients with chronic renal failure during hemodialysis.
The study was conducted on 7 Korean and 6 American patients on maintenance hemodialysis. The plasma pH of Korean patients was 7.31±0.02 before hemodialysis and 7.40±0.04 after hemodialysis (p<0.001). The pH of erythrocyte also increased from 7.13±0.02 to 7.20±0.03. The concentration of hemoglobin 2,3-DPG in Korean patients was 10.86±2.89 μmol/g before hemodialysis and 19.93±2.89 μmol/g after hemodialysis (p<0.001).
Similar results were obtained in American patients. Hemoglobin 2,3-DPG was 12.54±2.53 and 18.76±6.73 μmol/g before and after dialysis respectively. Despite the presence of substantial anemia, hemoglobin 2,3-DPG prior to hemodialysis was significantly lower than the values obtained in the normal controls (17.45±4.3 μmol/g).
The blood glucose increased from 93.3±8.5 mg/dl before dialysis to 117.1±6.1 mg/dl after hemodialysis in Korean patients but no significant change was detected in American patients. The increased blood glucose with hemodialysis observed in Korean patients was probably attributable to the lower baseline glucose concentration and the gain of glucose from dialysate, which had a glucose concentration of 186±34.1 mg/dl.
The results suggest that the increase in 2,3-DPG with hemodialysis is probably caused by an increase of pH and an increased glucose utilization.
1 citations
TL;DR: The value of NAI was increased according to the improvement of clinical symptoms and normalization of transaminase, but the value ofNAI was decreased according to to the worsening of clinical Symptoms and elevation ofTransaminase.
Abstract: In the pathogenesis of chronic active hepatitis, the importance of cell mediated immunity (CMI) has been emphasized. Leukocyte adherence inhibition (LAI) assay, which is one of the methods for analysis of the reaction of CMI, has been used to analysie the CMI of cancer patients.
The authors tried the specific antigen-mediated LAI assay in 40 patients with chronic active hepatitis, 19 patients carriers of hepatitis B virus, and in the 5 persons who have no anti-HBs in spite of receiving vaccination against HBV, and these were compared with 7 normal control subjects who had been exposed to hepatitis B virus previously.
The results were as follows:
The NAI was 52.4±14 (mean ± standard deviation) in 7 normal control subjects who had been exposed to hepatitis B virus previously.
The NAI was 20.6 ± 11 (mean ± standard deviation) in 40 patients with chronic active hepatitis. The value was significantly lower than that of the normal control group (P<0.001).
The NAI was 49.7±17.8 (mean ± standard deviation) in 19 patients carriers of hepatitis B virus. The value was not significantly different from that of the normal control group (P>0.05).
The NAI was 25.1±11 (mean ± standard deviation) in 5 persons who have no anti-HBs in spite of receiving vaccination against HBV. The value was significantly lower than that of the normal control group (P<0.05).
In patients with chronic active hepatitis and hepatitis B virus carriers, we checked the LAI assay serially. The value of NAI was increased according to the improvement of clinical symptoms and normalization of transaminase, but the value of NAI was decreased according to the worsening of clinical symptoms and elevation of transaminase.
Keywords: Leukocyte adherence inhibition (LAI) assay, Nonadherent index (NAI), Hepatitis
INTRODUCTION
In the pathogenesis of chronic active hepatitis, the importance of CMI has been emphasized. LAI assay, which is one of the methods for analysis of the reaction of CMI, has been used to analysis the CMI of cancer patients.
This LAI assay has been introduced by Halliday and Miller in 1972 for the detection of cell mediated anti-tumor immunity1, 2). Although there are variations in application, this method has advantages of specificity for the analysing of CMI. This method measures an antigen induced, decreased ability of leukocytes to adhere to glass surfaces when exposed to antigens against which the leukocytes have been sensitized. The authors tried the LAI assay to get the relationships between the LAI reactions and the prognosis of patients who have chronic active hepatitis, the carriers of hepatitis B virus and the patients who have no anti-HBs in spite of receiving vaccinations against HBV.