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호흡음주측정에서 Alco-Sensor Ⅳ와 Lion Alcolmeter SD-400P의 비교
윤보현(Bo-Hyun Yoon),정명섭(Myung-Sub Jung),표경식(Kyung-Sik Pyo),임채식(Chae-Sig Lim),이병회(Byung-Hoi Lee),박용현(Yong-Hyun Park) 한국중독정신의학회 1999 중독정신의학 Vol.3 No.1
Objectives:The aim of this study was to evaluate the interreliabilities and reproducibilities of two breathanalyzers which commonly used in clinical settings, research fields, and legal purposes including roadside testing. Methods:Thirty-four healthy male volunteers were examined through 30, 60, 90, 120, 150 and 180 minutes after 20 minutes’ intake of one of the two doses of alcohol (0.5 and 0.75 g/kg of body weight) on separate occasions. Two kinds of breathanalyzers [Alco- Sensor Ⅳ (Intoximeters, Inc., USA;Alco-Sensor) and Lion Alcolmeter SD-400P (Lion Laboratories plc, UK;SD-400P)] were used to measure the breath alcohol concentrations (BrAC). Duplicate breath samples at each time point were used to determine the repeatabilities of the breathanalyzers. Results:Mean values of two breathanalyzers at each time point were not statistically different. Although there were not significant, the values obtained from SD-400P were tended to slightly higher than those of Alco-Sensor. Inter-reliabilities of Alco-Sensor and SD-400P at 0.5 and 0.75 g/kg of body weight were very high[r=0.972 (p〈.001);r= 0.938 (p〈.001), respectively]. Test-retest reliabilities of Alco-Sensor and SD- 400P were also very high[r=0.976 (p〈.001); r=0.984 (p〈.001), respectively]. Conclusion:The two breathanalyzers can be used as highly reliable instruments in all kinds of fields including roadside testing. Although further studies concerning the accuracy and precision of the breath-alcohol measurements in Koreans should be done, it suggests that these instruments may be easily and safely used as evidential breath testing.
이질바퀴(Periplaneta americana) 소화관의 광학현미경적 구조
조양익,임채식,한원동 순천대학교 1999 순천대학교 자연과학논문집 Vol.18 No.2
The morphological feature of an alimentary canal from Periplaneta americana were observed with light microscope. A midgut epithelium forms complicated and irregular villus lines and is arranged with two layers of oval epithelial cells. There arrangements of short and conic fine microvilli in lumen surfaces. There was no goblet cell in a midgut epithelium. A hindgut doesn't form a villus but is filled with columnar cells. As it is close from the anterior to the posterior portion, a length of columnar cells gets short. A columnar cell surface in the lumen has an arrangement of fine microvilli. The nucleus is a long oval shape in the anterior cell while there is a regular arrangement of global nucleus in the posterior cell. We can observe numbers of regenerative cells in the basement membrane of hindgut epithelium. There are circular muscles and longitudinal muscels in an orderly way in the basement membrane.