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PCB ( Aroclor 1254 ) 가 한국산 담수어류에 (淡水魚類) 미치는 영향
윤여표,이성규,김용화,강원식,지연태,이세창 ( Yeo Pyo Yun,Sung Kyu Lee,Yong Hwa Kim,Won Seek Kang,Youn Tae Chi,Se Chang Lee ) 한국하천호수학회 1994 생태와 환경 Vol.27 No.3
The purpose of this study was to elucidate the adverse effects of Aroclor 1254 on domestic freshwater fish. The acute toxicity in terms of LC_(50)(mg/L) in 96 hours was evaluated for the freshwater fish, Oryzias latipes, Cyprinus carpio and Misgurnus anguillicaudatus. 96-hr LC_(50) values(that concentration kills half of the firth in 96 hours) were 0.053mg/L for newly hatched Oryzias latipes but above 200mg/L for adult Oryzias latipes. Concentrations of Aroclor 1254 above 100mg/L were not lethal to Misgurnus anguillicaudatus but half of Cyprinus carpio were dead after 96 hours in 100mg/L concentration. To assess the danger of Aroclor 1254 to aquatic invertebrates, bioassays were conducted with Daphnia magna. Fifty percent of hatched Daphnia magna died at 0.048mg/L concentration after 96 hours. It is suggested from this study that further study on Aroclor 1254 or other PCBs should be focussed en the mortality of the fish larvae with chronic exposure at low concentrations.
강이구,정헌석,이준환,현득창,황성일,송봉섭,이상훈,김영진,오상익,주숭호,이세창,Kang, Ey-Goo,Chung, Hun-Suk,Lee, Jun-Hwan,Hyun, Deuk-Chang,Hwang, Sung-Il,Song, Bong-Sub,Lee, Sang-Hun,Kim, Young-Jin,Oh, Sang-Ik,Ju, Seung-Ho,Lee, Se-Chang 한국컴퓨터산업학회 2005 컴퓨터産業敎育學會論文誌 Vol.6 No.5
This paper was proposed Intelligent and wireless USN/RFID module system that can overcome disadvantage of existing RFID system with no sensing module and wire communication. The proposed USN/RFID system was designed and fabricated. After fabricating new system, we analyzed the characteristics of USN/RFID module. After design VCO block that is point circuit to develop next generation system one chip of RFID system. we were carried out simulation and verified the validity, this paper was showed that VCO system was enough usable in wireless network module. USN/RFID Reader module shows superior result that validity awareness distance corresponds to 30M in the case of USN and to 5M in RFID Reader's case and 900MHz of commercial frequency does practical use enoughly in range of high frequency. The USN/RFID Reader module is considered to act big role to Ubiqitous industry offering computing surrounding of new concept that is intelligence type service and that was associated to real time location system(RTLS). environment improvement/supervision. national defense, traffic administration etc.
지능형 무선 센서네트워크 구현을 위한 USN/RFID 모듈의 설계 및 제작에 관한 연구
강이구,정헌석,이준환,현득창,황성일,송봉섭,이상훈,김영진,오상익,주숭호,이세창,Kang Ey Goo,Chung Hun-Suk,Lee Jun-Hwan,Hyun Deuk Chang,Hwang Sung-Il,Song Bong-Seob,Lee Sang-Hun,Kim Young-Jin,Oh Sang-Ik,Ju Seung-Ho,Lee Se-Chang 한국전기전자재료학회 2006 전기전자재료학회논문지 Vol.19 No.3
This paper was proposed Intelligent and wireless USN/RFID module system that can overcome disadvantage of existing RFID system with no sensing module and wire communication. The proposed USN/RFID system was designed and fabricated. After fabricating new system, we analyzed the characteristics of USN/RFID module. After design VCO block that is point circuit to develop next generation system one chip of RFID system, we were carried out simulation and verified the validity. this paper was showed that VCO system was enough usable in wireless network module. USN/RFID Reader module shows superior result that validity awareness distance corresponds to 30 M in the case of USN and to 5 M in RFID Reader's case and 900 MHz of commercial frequency does practical use enoughly in range of high frequency. The USN/RFID Reader module is considered to act big role to Ubiqitous industry offering computing surrounding of new concept that is intelligence type service and that was associated to real time location system(RTLS), environment improvement/supervision, national defense, traffic administration etc.
Effects of Diazinon on the Murine Host Defense System
윤여표,이세창,홍진태,김관회 한국식품위생안전성학회 1992 한국식품위생안전성학회지 Vol.7 No.2
Diazinon which is one of the most heavily used organophosphate pesticide in Korea, was examined for its effects on the marine host defense system. Immunotoxicological assay parameters adopted in this study were carbon clearance for macrophage function, susceptibility to tumor challenge, and pathotoxicological indicators. Subchronic exposure of pesticide to rodents resulted in the suppression of immune functions, enhancement of susceptibility to tumor challenge, and moderate histological changes of lymphoid organ without any significant alterations of clinical status.