http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
손태준,박정식,서두옥 한국수산학회 1977 한국수산과학회지 Vol.10 No.4
西歸浦 沿岸에 人工魚礁를 設置하여 魚礁의 形態와 魚群의 蝟集에 關한 硏究에서 아래와 같은 結果를 얻었다. 1. 魚礁設置 海域의 15m 水深層에 대한 吹送流는 最高流速이 15.28㎝/sec였고 流向은 WSW가 20.5%였다. 2. 흐름과 波에 의한 圓形垂下型魚礁의 流體抵抗은 約 890㎏이 最大였고, 魚礁에 附着된 멍의 重量은 1,200㎏로서 固定力이 充分하였다. 3. 파라슈트魚礁에 대한 最大抵抗은 106.3㎏로서 멍의 固定力은 充分했으나 비닐캔버스와 展開用 資材가 弱하여 維持되지 못하였다. 4. 濟州島 近海産 重要魚類 53種中 人工魚礁에 蝟集한 魚種은 16種이었고 漁獲組成比는 참돔 23%, 볼락 13%, 보리멸 11%, 우럭볼락 7%, 쥐치 6%이고 潛水 觀察에서 魚礁의 中層部에 많은 稚魚가 蝟集된 것을 確認하였다. This study intended to investigate the shape of the artificial fish reefs settled in the waters of Seogwipo, and the thronging of fish schools into them. The results obtained are summarized as follows: 1. Two types of artifical fish reef, circularized vertical type which is composed of Cryptomeria branches and parachute type, were put off the coast of Seogwipo at 33˚14'05" N Lat.,126˚34'40" E Long. The setting place is located 0. 4 sea-mile away from natural fish reefs, at 25 m in depth. And its sediment is consisted of f. S. and Sh. 2. Maximum velocity of wind drift current was 15.28 ㎝/sec at 15 m depth. The current direction was 20.5% in the WSW. 3. Maximum fluid resistance of the circularized vertical type to current and wind waves showed about 890 ㎏, and the weight of sand bags attached to the fish reef totaling 1,200 ㎏ was enough to sustain fish reef. 4. As maximum fluid resistance of the parachute type to current and wind waves was 106.3 ㎏, the retaining force of sand bags was enough to sustain the fish reef, but vinyl canvas and expansion materials were so poor that the fish reef was lost by the sea current and wind waves. 5. Sixteen species of fish among 53 usually caught in this area were thronged into the artificial fish reef. The fish catches comprized porgy (Pagrosomus major) 23%, black kock fish (Sebastes (Mebarus) inermis) 13%, sand borer (Sillago sihama) 11%, Sebastes (Pteropodus) hubbsi 7%, and file fish (Monacanthus cirrhifer) 6%. According to the submarine observations by divers, it was confirmed that a lot of fish larvae thronged in the middle part of the fish reefs.
엔진윤활유 중 Ethylene Glycol의 용제추출후 bistrimethylsilyltrifluoroacetamide(BSTFA)를 이용한 GC/MS 분석에 관한 연구
이준배(Joon-Bae Lee),권오성(O-Seong Kwon),유재훈(Jae-Hoon You),손성건(Shungkun Shon),성태명(Tae-Myung Sung),팽기정(Ki-Jung Paeng) 한국트라이볼로지학회 2012 한국트라이볼로지학회지 (Tribol. Lubr.) Vol.28 No.6
For proper functioning, general machines usually need lubricant oil as a cooling, cleaning, and sealing agent at points of mechanical contact. The quality of lubricant oil can deteriorate during operation owing to various causes such as high temperature, combustion products and extraneous impurities. In this study, a heavy load stopped during operation, and the oil was analyzed to check whether any impurities were added. Extraction using acetonitrile followed by reaction with BSTFA(bistrimethylsilyl trifluoroacetamide) showed that, trimethylsilylated ethylene glycol was present in the lubricant oil. To quantify the ethylene glycol in the oil, deuterium-substituted ethylene glycol, which acted as an internal standard, was added to the sample and then extracted with the solvent. Next, the extract was reacted with the derivatizing agent(BSTFA) and then analyzed with GC/MS. The detection limit of this method was found to be 0.5 ㎍/g and the recovery of oil containing 20,000 ㎍/g of ethylene glycol was measured to be 94.8%. A damaged O-ring and eroded cylinder liner were found during the overhaul, which implied the leakage of coolant containing ethylene glycol into the lubricating system. The erosion of the cylinder liner was assumed to be due to cavitation of the coolant in the cooling system.
박태욱 ( Tae Wook Park ),고원석 ( Won Seok Koh ),허철호 ( Cheal Ho Heo ),손구례 ( Ku Rye Shon ),김종승 ( Chong Sung Kim ),양홍지 ( Hong Ji Yang ),이상복 ( Sang Bork Lee ),배정준 ( Jeong Joon Bae ) 한국가축위생학회 2002 韓國家畜衛生學會誌 Vol.25 No.1
In order to monitor the parasites, 233 fecal samples were taken form horse in Jeonbuk area. Then identification of the parasites were determined by the fecal examination using the floatation and microscopical examination, respectively. The detection rate. was 31.7%, and mixed infection rate was single 22.7%(53 heads), double 8.2%(19 heads), and triple 1.3%(1 heads). The isolates were identified as Trichostrongylus axei from 38 heads, Strongyloides westeri from 30 heads, Trichonema spp from 11 heads, Stongylus spp from 10 heads, Triodontophorus spp from 4 heads, and Dityoczzulus arnfielde from 1 head.
Risk Analysis of Bovine Spongiform Encephalopathy in Korea
KIM, Tae-Yung,KIM, Yong-Sang,KIM, Joon-Kul,SHON, Hyun-Joo,LEE, Yoon-Hee,KANG, Chung-Boo,PARK, Joon-Suk,KANG, Kyung-Sun,LEE, Yong-Soon Japanese Society of Veterinary Science 2005 The Journal of veterinary medical science Vol.67 No.8
<P>The occurrence of Bovine Spongiform Encephalopathy (BSE, so called mad cow diseases) that was first identified in England in 1986 was considered as being limited to only European countries, including England. However, the outbreak in Asia as well as North America since 2001 has amplified the fear that there isn't any nation in the world that is a safe area. In order to assess the risk of BSE outbreak in each country, the Office International des Epizooties (OIE) and EU have respectively established criteria, where OIE has set 5 levels and EU has set 4 levels. The Scientific Steering Committee (SSC) of the European Commission conducted a Geographical BSE Risk(GBR) assessment for 64 nations, such as the United States, etc., as of April 29, 2003. However, as of July 1, 2005, the duty of GBR assessment is expected to be transferred to a newly established body called EFSA (European Food Safety Authority, located in Parma, Italy). As Korea has not undergone a GBR assessment up to now, this study analyzed the risk of BSE outbreak in Korea by reviewing BSE prevention measures, etc., that have been put in place. This study shall be a barometer for estimating the GBR assessment level of Korea.</P>
김준형,김인태,이규성,이성호,손종식 한국공업화학회 2000 응용화학 Vol.4 No.1
The specific toxicity of incineration ash is higher than those of feed wastes. It is recommended that incinerator ashes containing hazardous materials should be stabilized for safe handling and disposal. Final waste forms from melting process have good mechanical strength and chemical durability. In this paper, long-term leaching tests are performed to investigate the elemental leach behaviors of several glassy waste forms which are fabricated from simulated radioactive incinerator ash at different mixing ratios of of ash to base glass. And two theoretical models for predicting the long-term leaching behaviors are applied to the experimental results.