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신규개발된 제초제 metamifop 현탁농축액제에 대한 급성독성평가
이동연,이상훈,백경진,김태원,정두순,임종환,김명석,박병권,윤효인 충남대학교 수의과대학 동물의과학연구소 2004 動物醫科學硏究誌 Vol.12 No.-
Metamifop, (R)-2-[4-[(6-chloro-2-benzoxazolyloxyphenoxy]-N-(2-fluorophenyl)-N-methyl propanamide, was newly developed by Dongbu Hannong Chemicals in Korea. In the present study we conducted acute oral toxicity and acute dermal toxicity test. The values of LD_(50) of metamifop was found to be over 5,000 mg/kg for ICR mice. On the other hand, metamifop showed no acute dermal toxicity to SD rats.
Carbosulfan의 피부자극성, 안점막 자극성 및 피부감작성등의 알러지성 효과에 관한 연구
이상훈,이동연,백경진,김태원,정두순,임종환,김명석,박병권,윤효인 충남대학교 수의과대학 동물의과학연구소 2004 動物醫科學硏究誌 Vol.12 No.-
Many studies have been published on the human health effects of carbosulfan toxicity. Carbosulfan used as an insecticide can produce an irritating and allergenic effect when acting on the skin. In this study, a sensitization test on albino guinea pigs and intradermal reactivity and occular irritation test on albino rabbits were carried out with carbosulfan. Signs of acute skin inflammation appeared along with the clinical symptom of chronic dermatosis caused by the solution irritating characteristics. Moreover, carbosulfan showed severe eye irritation with conjuctival redness and severe opacity on cornea. Preventive measures should involve workers' obligatory instructions on the noxious impact on human skin and strict observance of industrial safety rules.
權錫兜,李明鎬 연세대학교 산업기술연구소 1981 논문집 Vol.13 No.1
This paper presents an improved extra-high voltage distribution system on the large scale apartment site. In this paper, we are attempting to step up feeder voltage to 22.9KV from the established voltage, 6.6KV between distribution lines. For this application, the third Panpo Apartment Site is sampled as a case. Amount of power distribution loss and its construction cost are calculated by digital computer. The results showed that amount of power distribution loss was reduced by 0.73%, from 4.62% to 3.8%, and construction cost by the reduction of facilities was curtailed by 0.7% less than that of the existing system. From these results, we suggest strongly that the improved distribution system may be used to reduce distribution loss and construction cost on the large scale apartment area in the near future.
Pyriminobac-methyl과 azimsulfuron 합제의 신규제형인 분산형 정제에 대한 독성 평가
백경진,이동연,이상훈,김태원,정두순,임종환,김명석,박병권,윤효인 충남대학교 수의과대학 동물의과학연구소 2004 動物醫科學硏究誌 Vol.12 No.-
Dispersible tablets disintegrate either to form a stabilized suspension rapidly in water, or to disperse instantaneously in the rice field without the aid of water. In this study, the newly formulated dispersible tablet form of herbicidal combination, pyriminobac-methyl and azimsulfuron, was evaluated the safety for human and animals in the toxicological viewpoints. The LD_(50) value of dispersible tablet form for pyriminobac-methyl and azimsulfuron was above 2,500 mg/kg for the oral route and above 2,000 mg/kg for the dermal route. It is considered to have low acute oral and dermal toxicity based on the findings of the present studies. In addition, the combination of pyriminobac-methyl and azimsulfuron showed mild skin irritant under the conditions of this study and conjunctival redness and slight opacity on cornea appeared from 1 hour after application.
액체크로마토그래피/질량분석법을 이용한 랫트 혈장내의 Surfactin C의 정량법에 관한 연구
임종환,김명석,이동연,이상훈,백경진,김태원,정두순,박병권,윤효인 충남대학교 수의과대학 동물의과학연구소 2004 動物醫科學硏究誌 Vol.12 No.-
Surfactin isolated from Bacillus subtilis has a strong surface tension-lowering activity, together with antiviral, antitumor, fibrinolytic and hypocholesterolemic activities. LC/MS is a simple, rapid and effective technique for the determination of surfactin C in rat serum. The separation of surfactin was achieved on reverse phase column. The mobile phase consisted of 0.1% trifluoracetic acid in water (A) and acetonitrile (B). As a result of analysis of blank rat serum samples, matrix interference was not shown. The values of precision and accuracy were satisfied w the guideline. A newly developed LC/MS method for the determination of surfactin C was successfully applied in its pharmacokinetic analysis.
이병두 ( Byung Doo Lee ),원명수 ( Myoung Soo Won ),장광민 ( Kwang Min Jang ),이명보 ( Myung Bo Lee ) 한국지리정보학회 2008 한국지리정보학회지 Vol.11 No.1
Topography factors, as homeostasis variables at forest fire, affect the formation of fuel load patterns, atmospheric phenomena and forest fire behavior. Examination of the correlation between landforms and fire severity is important to decision making for fire hazard analysis and fighting strategies. In this study, fire severity was analyzed using Normalized Burn Ratio(NBR) derived from pre- and post-fire Landsat TM/+ETM images and landform were classified based on Topographic Position Index(TPI) in Samcheok(2000), Cheongyang(2002), and Yangyang(2005) forest fire regions. F-tests and Duncan`s multi-range test between landform and fire severity showed that fire severities of headwater, high ridges, and upper slopes is higher than ones of local ridges, midslope ridges, and plains. Fire severity were more sensitive in coniferous forest than broadleaf forests.
이대우 ( Dae Woo Lee ),김종석 ( Jong Seok Kim ),채두병 ( Doo Byoung Chay ),이상은 ( Sang Eun Lee ),김명찬 ( Myoung Chan Kim ),이윤호 ( Yoon Ho Lee ) 대한주산의학회 2002 大韓周産醫學會雜誌 Vol.13 No.2
선천성 십이지장 폐색은 주산기 장폐쇄의 가장 흔한 원인으로 동반기형의 정도, 환아의 영양상태, 조산여부가 예후에 영향을 주지만 산전 진찰상 초음파를 통해 조기에 진단하여 빠른 수술적 치료를 통해 음식물 흡인으로 인한 기도폐쇄 및 흡인성 폐렴, 심한 구토로 인해 발생하는 전해질, 수분소실등의 대사성 합병증들의 예방뿐만 아니라 사망률을 낮출수 있다. 또한 다른 위장관계나 췌담관계, 심장, 척추등에 동반되는 기형들이나 산전 진찰상 비슷한 소견을 보이는 다른 질환과의 감별진단이 필요하다. 본 저자들은 본원 산전 진찰상 임신26주에 발견된 선천성 십이지장 폐색증을 추적관찰하여 임신39주에 제왕분만 후 출생 7일째 십이지장-십이지장 문합술을 통해 수술적 교정을 시행한 1예를 경험하였기에 문헌고찰과 함께 보고하는 바이다. Congenital duodenal atresia is the most common cause of perinatal intestinal obstruction. Abdominal distension and projectile vomiting are the specific symptoms of neonatal gastro-intestinal obstruction. The incidence of duodenal atresia is between 1 in 2,710 and 1 in 10,000 live births. Most cases are thought to be failure of recanalization of the duodenal lumen during embryonic period. Duodenal atresia is associated with a high incidence of other associational anomalies, including esophageal atresia, biliary atresia, congenital heart disease and vertebral anomalies. Prenatal diagnosis, the ealry operation and the facotrs such as prematurity, combined abnormalities, nutirtion have a significant influence on complication and mortality. We report a case of congenital duodenal atresia diagnosed by ultrasonography prenatally in Andong general hostpital at 26 gestational weeks and operated the 7th day of cesarean section in Yeungnam university hospital with a brief review of literature.