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Campylobacter pylori 감염의 비관혈적이고 신속한 진단을 위한 14C - urea Breath Teat
박영태(Young Tae Bak),김진호(Jin Ho Kim),김종극(Jong Guk Kim),이창홍(Chang Hong Lee),박승철(Seung Chull Park),조윤정(Yun Jeung Cho),김대원(Dae Won Kim),이갑노(Kap No Lee) 대한내과학회 1988 대한내과학회지 Vol.34 No.5
N/A During the recent several years, Campylobacter pylori organisms have been implieated in the gastroduodenal diseases including gastritis, duodenal ulcer, gastric ulcer, epidemic hypochlorhydria, nonulcer dyspepsia, etc. Diagnositc methods include culture of the organism, detection of the organism in the gastric mucosa, demonstrating urease activity and serology. Endoscopy with biopsy have been required for the detection methods. In an effort to avoid the expense and discomfort of endoscopy in patient selection and follow-up studies, 14C-urea breath test was done and compared with the other diagnostic methods. Campylobacter pylori culture and histological examination of gastric antral mucosa, Gram stain of gastrie juice, and 14C-urea breath test was done in 123 cases undergoing upper gastrointestinal endoscopic examinations. Diagnostic sensitivity of the urea breath test with cut-off value of 0.4% was 0.93, specificity was 1.00, and efficiency was 0.94%. Among the diagnostic tests for C. pylori infection, detection with Warthin-Starry silver stain and 14C-urea breath test were most efficient (0,92 & 0.94), In conclusion, 14C-urea breath test may be a simple, noninvasive, rapid and very efficient method for the detection of C. pylori infection of the stomach.
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위조문서 감별을 위한 현대 문서용지 특성 분석 ( II )
최경화(Kyoung-Hwa Choi),이재훈(Jae-Hoon Lee),류정용(Jeong-Yong Ryu) 한국펄프·종이공학회 2018 펄프.종이技術 Vol.50 No.4
In order to investigate the characteristics of modern paper, the fiber type and blending ratio of the domestic paper document samples for which the year of publication has been confirmed were examined. In the results, major fibers including softwood bleached kraft pulp (SwBKP), hardwood bleached kraft pulp (HwBKP) and bleached mechanical pulp (MP) were found to be used in modern paper. SwBKP has been steadily used up to 23% of the total fiber in modern paper to improve paper strength. Prior to 1980, MP was used as the main fiber furnish of the document paper. However, since 1980, it has changed from MP to HwBKP. This change is presumably due to the high lignin content of the mechanical pulp that causes fast color reversion. It also appears to be affected by increasing consumer demand for high quality such as high brightness and excellent printing property. However, some samples produced after 1980 still contain small amounts of MP fibers. Since most of the pulp used in Korean paper mills is imported pulp, a small amount of MP is sometimes used to reduce production costs. To increase the reliability of this study, we need to increase and to update data base continuously.
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