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임요섭 ( Yo Sup Lim ),정혁 ( Hyuk Jung ) 대한산부인과학회 2008 Obstetrics & Gynecology Science Vol.51 No.7
Thecomas make up only 0.5% to 1% of ovarian tumors. They occur in woman predominantly in the perimenopausal and menopausal years. The average patient`s age is between 50 and 55 years.1-3 Thecomas only rarely occur in children.4 These tumors can be associated with estrogen production but not as frequently as are granulosa cell tumors. They are mostly unilateral and rarely malignant, so exicion of ovary is adequate treatment.5 Recently, we experienced thecoma, causing precocious puberty in 6 year old girl. and report with brief review of literatures.
포장과 실내실험에서 살충제 Cyfluthrin 의 토양 중 반감기 차이에 미치는 환경요인 구명
한성수,최용화,임방현,임요섭 한국농화학회 2000 Applied Biological Chemistry (Appl Biol Chem) Vol.43 No.4
This study was conducted to find out the environmental factors affecting the differences in the half-life of the insecticide cyfluthrin in soil between field and laboratory tests carried out in 1998. Degradation and leaching of cyfluthrin in soil were examined under various environmental conditions that were considered to affect the residuality. Cyfluthrin was degraded 1.9 times faster in non-sterilized soil than in sterilized soil and 1.2 times at 25℃ than at 15℃. The half-lives of cyfluthrin were 61.4 days under the dark condition and 4.5 days under sunlight, and those were 11.8 days under the open condition and 23.8 days under the closed condition. The half-lives of the authentic compound and the commercial product of cyfluthrin were 15 and 1 day in the field test and 26 and 3 days in the laboratory test, respectively. Cyfluthrin was rapidly degraded with an increase in soil moisture content and decomposed faster in the alkaline solution of pH 12 than in the acidic solution of pH 3, but the half-life of cyfluthrin did not make any difference between pH 6.4 of the field test soil and pH 5.6 of the laboratory test soil. Cyfluthrin was immobile in soil from the results that 81∼94% of the initial amount remained in the 0∼2 ㎝ layer of the soil column regardless of the amount and time of rainfall after the chemical treatments. From viewing the abovementioned results, soil moisture content, sunlight and formulation type affected greatly soil microbes and volatilization affected slightly, and temperature, pH and rainfall did not affect the big difference in the half-life of cyfluthrin in soil between the field and laboratory tests in the year of 1998.