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마이크로파 여기 플라즈마광 생성을 위한 도파관 시스템 설계에 관한 연구
전상재,전후동,송창현,하석영,이승혁,이태호,박의준 금오공과대학교 2005 論文集 Vol.26 No.-
In this paper, the plasma lighting system(PLS) excited by the commercial high power magnetron is developed. The design concepts are based on maximizing the huninous efficacy in conjunction with the miniaturization of waveguide system Furthermore the fine tuning is simplified by using only one stub, and the impedance matching is maximized by introducing the tapering technique. The experimental results show that the luminous efficacy can be dramatically improved by the proposed design method.
( Kwang Tae Son ),( Ji Young Kwon ),( Mi Ra Jo ),( Min Chul Yoon ),( Ki Cheol Song ),( Woo Seok Choi ),( In Ja Yeon ),( Ji Hoe Kim ),( Tae Seek Lee ) 한국수산과학회(구 한국수산학회) 2014 Fisheries and Aquatic Sciences Vol.17 No.4
Mercury is an element of special concern for human health. Measurements of total mercury levels in fish have been taken into consideration to assess risk. In this study, the Antarctic toothfish Dissostichus mawsoni was evaluated as a potential safe food source through measurement of total mercury contents. Total mercury concentrations in Antarctic toothfish ranged from 0.101 ± 0.047 mg/kg to 0.139 ± 0.075 mg/kg. The total mercury concentration was significantly correlated with macroscopic values including total fish length, weight, gonadosomatic index, and maturity (P < 0.01 or 0.05). Furthermore, according to the risk assessment, the total mercury body exposure rate from Antarctic toothfish ranged from 2.125% to 2.847% of the Provisional Tolerable Weekly Intake. Therefore, the Antarctic toothfish could be used as a potential safe seafood source.
양식 넙치(Paralichthys olivaceus)에 대한 Erythromycin 휴약기간 설정
이태식 ( Tae Seek Lee ),박미정 ( Mi Jung Park ),최혜승 ( Hye Sung Choi ),심길보 ( Kil Bo Shim ),박미선 ( Mi Seon Park ),신일식 ( Il Shik Shin ) 한국수산학회 2009 한국수산과학회지 Vol.42 No.3
The withdrawal time of erythromycin in cultured olive flounder was investigated to ensure the food safety of the fish treated with erythromycin. The oral administration of erythromycin was carried out using the experimental diet containing erythromycin (200mg/kg) daily dose of 40 mg/kg body weight. The 45 day experimental period was broken into 7 days of habituation, 8 days of medication and 30 days of additional feeding without antibiotics. The erythromycin concentration in the flounder muscle had been increased gradually with medication. After 5 days of medication, the concentration increased to its maximum level of 6.05mg/kg. After discontinuing the antibiotic, the erythromycin concentration decreased drastically and day 9 was below 0.1mg/kg. The erythromycin concentration had slowly declined from the 6th to the 20th day after medication and disappeared completely after 25 days. From these results, the time needed to reduce the erythromycin level to the 0.2mg/kg limit adopted by the EU and Japan was suspected to be 4-6 days. Therefore, a reasonable withdrawal time following EU and Japanese regulatory guidelines for erythromycin in the cultured flounder could be estimated to be 10 days.