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김치수,김명숙,장인봉 한국불어불문학회 1999 佛語佛文學硏究 Vol.38 No.2
Nous avons tente´ d'e´tudier, dans cette analyse, diffe´rents phe´nome`nes linguistiques contenus dans les slogans publicitaires diffuse´s dans la presse e´crite core´enne. Cette recherche s'organise, pour re´sumer, autour de deux parties. Dans un premier temps, nous avons souligne´ le fait que la publicite´ sert de dispositifs linguistiques au niveau des sons, des lexiques ou des locutions. C'est pour cela que nous sommes attarde´s sur les jeux linguistiques suivants : - la re´pe´tition des sons, - les synonymes et les antonymes, - les homonymes et les polyse´mies, - et l'imitation ou la transformation des expressions fige´es. L'analyse de ces e´le´ments nous a montre´ qu'a` partir des expressions les plus anodines, nous devions nous attendre a` toute une gamme de strate´gies publicitaires mise en place en vue d'impliquer dans son jeu le lecteur-re´cepteur. Nous nous sommes ensuite penche´s sur les strate´gies reposant sur l'e´nonciation. Pour cre´er une situation e´nonciative, mais aussi pour transformer la passivite´ du lecteur-re´cepteur en une participation plus active, les concepteurs mettent a` contribution des embrayeurs, une forme imitative du discours rapporte´, la reprise et, enfin, la pre´supposition Tous ces jeux ont pour fonction de faire entendre une voix autre que celle du locuteur. C'est derniers qui s'appuient en fait sur la strate´gie dite de la "polyphonie". Ainsi pouvons nous remarquer que les e´le´ments linguistiques jouent, dans la publicite´, un ro^le aussi important que celui des images pour inviter le lecteur-re´cepteur a` devenir le complice des jeux publicitaires.
흰쥐의 적출 간 관류법을 이용한 벤지딘 대사에 관한 연구
조영봉,김치년,김춘성,배문주,노재훈,전미령 한국산업위생학회 1996 한국산업보건학회지 Vol.6 No.1
Benzidine, an aromatic amine used primarily in the manufacture of azo dyes, is recognized as a urinary bladder carcinogen in humans. In rats, mice, and hamsters, chronic exposure to benzidine resulted in tumors of the liver. The present study was undertaken to suggest analysing the metabolites of benzidine with the optimal condition, identify the metabolites of benzidine, and observe time variance of the metabolites in the isolated perfusated rat liver. N-acetylbenzidine was synthesized by acetylation of benzidine with acetic anhydride and separated by thin layer chromatography(TLC) and high performance liquid chromatography(HPLC). To analysis benzidine and the metabolites of benzidine, HPLC operating condition has been optimized by means of preliminary experiment. The mobile phase consisted of acetonitrile(37%) in phosphate buffer, flow rate maintained at 1.0 ㎖/min. Optimal detective conditions were electrochemicaldetector(ECD) at 0,75 V for benzidine and N-acetylbenzidne and ultravioletdetector(UVD) at 287 nm for N,N¹-diacetylbenzidine. The separation system was composed of a guard column and a separation column(Polymer C 18, 4.6 × 250㎝) at a temperature of 40℃. The perfusion system was equilibrated for 30 minutes before addition of benzidine to the perfusate. Samples of the perfusate were collected at time intervals(0, 10, 20, 30, 60, 90, 120 min) during the 2 hour perfusion. Before analyzing samples by HPLC/ECD/UVD, samples had been treated with sep-pak. Samples of perfusate analyzed by HPLC/ECD/UVD and the metabolites of benzidine in the isolated perfused rat liver were N-acetylbenzidine and N,N¹-diacetylbenzidine. Benzidine metabolized over 60% during the initial 30 minutes of perfusion, extensively by 1 hour, and was undetectable in the perfusate. N-acetylbenzidine increased by 30 minutes of perfusion, declined. N,N¹-diacetylbenzidine increased the 0-90 minutes period, remained constant during the 90-120 minutes period.
김치년,노재훈,조영봉,문영한 大韓産業醫學會 1992 대한직업환경의학회지 Vol.4 No.2
The objectives of this study are developing the optimal analytic methods for detecting urinary metabolites of carbon disulfide(CS₂) and determining which metabolite is more useful biological indicator for CS₂metabolites, For this experiment, we used synthesized CS₂metabolites, 2-thio-thiazolidine-4-carboxylic acid(TTCA) and thiocarbamide. Those were identified by infrared spectroscopy and nuclear magnetic resonance spectroscopy. The maximum absorbances of TTCA and thiocarbamide were 272 nm and 236 nm respectively. Detection by UV detector was more precise and accurate than that by infrared spectrophotometer. Ethyl acetate extraction method was adopted as precleaning method for HPLC analysis of urinary methabolites. Urinary amount of TTCA and thiocarbamide were measured by HPLC after administration of CS₂(350mg/kg, 700mg/kg) into Sprague-Dawley rats intraperitoneally. Excreted amounts of urinary TTCA and thiocarbamide were increased by the doses of CS₂administration. The urinary amount of TTCA was greater than that of thiocarbamide after administration of both doses of CS₂in rats. These results showed that TTCA seened to be more useful biological indicator for CS₂exposure as ACGIH recommended, however further studies are need to simplyfy analytic methods for measuring the urinary metabolites of CS₂and clarify mechanisms of CS₂metabolism.
이신영,김치년,조영봉,오상용,노재훈 한국산업위생학회 2003 한국산업보건학회지 Vol.13 No.2
The limit of detection(LOD), pooled coefficient of variation(pooled CV), desorption dffciency(DE), and stability after desorption by pre-treatments was compared and evaluated for analyzing the Ethylene oxide(EO) sampling on HBr-coated Charcoal tube, The results were as follows: 1. The EO's LOD was 2,483ug/sample when using the desorptin solvent, benzene : CS2(99:1), and 1.919ug/sample after using DMF. The result of the sample that passed DMF desorption and was derivativized was 1.301ug/sample. 2. EO's pooled CV was 0.00503 when using the solvent benzene:CS(99:1), after desorption with DMF, the result was 0.00329, and the result of those derivativized by DMF desorption was 0.00514. 3. EO's DE using the solvent benzene:CS(99:1) was 92.13%, atter desorption with DMF, it was 102.75%, and the result of those studied after being derivativized by DMF desorption was 96.47%. 4. EO's stability for the sample with the solvent benzene:CS(99:1), comparing result of next-day analysis to same-day was 96.81% after desorption was 95.69% These results were in accordance with the less than 5% given by OSHA methoc 50. In conclusion, when pre-treatment of the EO in the HBr=coated charcoal, analyzing immediately after desorption by DMF is more simple, precise, and efficient than other analyzing methods, and the stabiity of the sample 24 hours after desorption was alst established.
이황화탄소를 경구투여한 흰쥐의 혈중 이황화탄소에 관한 연구
조명화,이경종,문영한,조영봉,노재훈,김치년 大韓産業醫學會 1993 대한직업환경의학회지 Vol.5 No.2
Carbon disulfide (CS₂) ditributed in the body by the blood stream, presents free form and bound form carbon disulfide that is acid-labile carbon disulfide(ALCS₂) in blood. ALCS₂could be analyzed by acid-treatment fraction which binds to celluar macromolecules or amino acid. We observed the variation of blood concentration of carbon disulfide and the amounts of free form CS₂and ALCS₂in blood were determined according to their oral doses. After administration for six days, the amount of free form CS₂and ALCS₂in blood was increased significantly through duration of administration for six days. ALCS₂was remained longer than free form CS₂in blood for all doses. The amount of free form CS₂and ALCS₂in red blood cells was larger than that of plasma. As the above results, ALCS₂might be a useful indicator for biological monitoring of CS₂in blood.