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하광수 ( Kwang Soo Ha ),유현덕 ( Hyun Duk Yoo ),심길보 ( Kil Bo Shim ),김지회 ( Ji Hoe Kim ),이태식 ( Tae Seek Lee ),김풍호 ( Poong Ho Kim ),주자연 ( Ja Yeon Ju ),이희정 ( Hee Jung Lee ) 한국수산과학회(구 한국수산학회) 2011 한국수산과학회지 Vol.44 No.6
The influences of inland pollution sources because of rainfall events on the bacteriological water quality in Geoje Bay, a major shellfish production area in Korea, were investigated. The sanitary status of sea water and shellfish after rainfall events was also evaluated. The flow rates of 13 streams around Geoje Bay showed 6 to 7-fold increases after 15 to 21 mm of rainfall. Peak pollution was observed in the Naegan Stream, the Gandeok Stream and the Seojeong Stream. The calculated impact area of inland pollution sources was 3.1 ㎢ immediately after 15 mm of rainfall and expanded to 3.5 ㎢ after 24 hours. These calculations of impacted area matched results from fecal coliform analyses with sea water. The distance between the major pollution source in the bay (the Gandeok Stream) and the station with the worst bacteriological water quality immediately after 15 mm of rainfall, which was below the Korean standard, was 0.8 km in a straight line; this distance increased to 2.0 km after a period of 24 hours. The area impacted by inland pollution sources after a 15 mm rainfall event was wider than after a 21 mm rainfall. Although the flow rate from inland pollution sources was higher, the concentration of fecal coliform in the discharged water was lower after higher rainfall events. These observations corresponded with the results of fecal coliform analyses with sea water samples. According to the evaluation of the influences of inland pollution sources and fecal coliform analyses on sea water and shellfish samples in Geoje Bay, pollutants from inland sources did not reach the boundary line of the shellfish growing area after rainfall events of 15 or 22 mm. The bacteriological water quality of the shellfish growing area in Geoje Bay met the Korean standard and US NSSP requirements for approved shellfish growing areas.
패류 중 자연정화 및 인공정화에 의한 위생지표세균의 변화
오은경 ( Eun Gyoung Oh ),유현덕 ( Hyun Duk Yoo ),유홍식 ( Hong Sik Yu ),하광수 ( Kwang Soo Ha ),신순범 ( Soon Bum Shin ),이태식 ( Tae Seek Lee ),이희정 ( Hee Jung Lee ),김지회 ( Ji Hoe Kim ),손광태 ( Kwang Tae Son ) 한국수산과학회(구 한국수산학회) 2012 한국수산과학회지 Vol.45 No.1
In coastal areas that are affected by continuous, seasonal or occasional pollution sources, bivalves accumulate biological contaminants such as pathogenic bacteria. We investigated the effect of natural seawater relaying and electrolyzed seawater depuration on the bacteriological quality of artificially contaminated oysters Crassostrea gigas and short-necked clams Ruditapes philippinarum to suggest an alternative method of shellfish sanitation control.When artificially contaminated oysters and short-necked clams (fecal coliform level 1,700 MPN/100 g) were relayed into a sea area of safe bacteriological water quality, the fecal coliform level dropped to below 110 MPN/100 g after 1 day. The bacteriological quality of oysters and short-necked clams that are contaminated at a fecal coliform level of 1,700 MPN/100 g could be improved, and become appropriate for raw consumption by a single day relay under proper environmental conditions. When artificially contaminated oysters (fecal coliform level 330 MPN/100 g) were depurated with electrolyzed seawater, 94% of fecal coliform was eliminated after 12 h and fecal coliform was undetectable after 24 h. After 24 h depuration with electrolyzed seawater, the fecal coliform level of short-necked clams with initial fecal coliform of 2,400 MPN/100 g was below 20 MPN/100 g. However, the fecal coliform level of short-necked clams with initial fecal coliform of 17,000 MPN/100 g was relatively high, at 790 MPN/100 g, even after 24 h of depuration with electrolyzed seawater, because of the repeated cycle of excretion and accumulation of fecal coliform in shellfish tissue under the closed depuration environment. Such natural seawater relaying and electrolyzed seawater depuration can be restrictively applied to improve or secure the bacteriological quality of oysters and short-necked clams in accordance with safety levels for bivalves for raw consumption.
강우에 따른 적양항과 장포항 육상오염원이 창선해역에 미치는 세균학적 영향평가
하광수 ( Kwang Soo Ha ),유현덕 ( Hyun Duk Yoo ),심길보 ( Kil Bo Shim ),김지회 ( Ji Hoe Kim ),이태식 ( Tae Seek Lee ),김풍호 ( Poong Ho Kim ),이희정 ( Hee Jung Lee ),유홍식 ( Hong Sik Yu ) 한국수산과학회 2013 한국수산과학회지 Vol.46 No.2
The influences of inland pollution sources nearJeokyang and Jangpoports following rainfall events on the bacteriological water quality and safety of commercial shellfish were investigated in the Changseon area, Korea. Stream flow rates exhibited 1.9- to 5.7-fold increases after rainfall events and then fell to 68-81% of that level after 24 h. The calculated impact wea of inland pollution sources was 0.47 km2 in the Jeokyangport area and 0.27 km2 in the Jangpoport area at 24 b Following 11 mm of rainfall. When the flow rate of inland pollution increased, the level of male-specific bacteriophage (MSB) decreased, and no MSB could be detected in seawater samples, whereas 30 PFU/l00 g was detected in shellfish samples. Fecal coliform levels in seawater and shellfish samples did not exceed their respective tolerance levels (4.5 MPN/100mL) and 130 MPN/I00 g. respectively and thus complied with the standard for approved shellfish growing area. The sanitary conditions of areas adjacent to Jeokyang and Jangpoports under conditions of rainfall below 29 mm met the criteria for approved growing area under the United States National Shellfish Sanitation Program and the EC Regulations.
수술적 도달법에 따른 고관절 전치환술후의 이소성 골형성
안기찬 ( Ki Chan Ahn ),윤현기 ( Hyun Ki Yoon ),최장석 ( Jang Seok Choi ),김영창 ( Young Chang Kim ),유현덕 ( Hyun Duk Yoo ),서승석 ( Seong Seok Seo ),이영구 ( Young Gu Lee ) 대한고관절학회 1994 Hip and Pelvis Vol.6 No.1
Periarticular heterotopic bone(HB) formation after total hip arthroplasty (THA) was unknown causes yet, but occurs more commonly after procedures in which considerable bone was resected or the soft tissues were dissected extensively. The effect of the lateral and the postero-lateral surgical approaches for THA on HB formation were studied in 210 consecutive patients with 246 THA when reviewed 12 months following the operation. Overall rate of formation of HB after THA was 9. 75% and almost HB maturation occured before six months. Although the lowest incidence of HB formation occured after the posterolateral approach, postoperative hip scores for pain, function and range of motion(ROM) scorea showed no significant difference between groups. Therefore, the ability to achieve adequate pain relief and function with THA is not affected by the type of approach.
진해만 서부 용남·광도해역의 세균학적 수질에 미치는 육상 오염원의 영향
심길보 ( Kil Bo Shim ),하광수 ( Kwang Soo Ha ),유현덕 ( Hyun Duk Yoo ),이태식 ( Tae Seek Lee ),김지회 ( Ji Hoe Kim ) 한국수산과학회 2012 한국수산과학회지 Vol.45 No.6
To evaluate the bacteriological water quality in Yongnam-Gwangdo, located in western Jinhae Bay, seawater samples were analyzed using sanitary indicator bacteria at 57 sampling stations. According to survey results from January 2007 to December 2009, the range of the geometric mean and the estimated 90th percentile for coliforms and fecal coliforms in the samples were <1.8-16.5 and 1.8-246.8 MPN/100 mL and <1.8-7.1 and 1.8-74.8 MPN/100 mL, respectively. The samples, including those taken from stations located in Wonmunman, Gwangdo, and Dangdong, showed high levels of microbial contamination caused by the climate and weather patterns in the marine environment. The bacteriological water quality in the area met Korean criteria for a designated shellf ish growing area for export and National Shellf ish Sanitation Program criteria for an approved shellf ish growing area, except at station #49. A total of 24 direct pollution sources were discharged into the shellf ish growing area. The radius of impact was calculated for each pollution source to assess the effect on the shellfish growing area. The calculated radius of impact for most of the pollution sources was below 300 m. However, the radius of impact for the combined pollution sources in Kyeonnaeryang was 93-1973 m. There were signif icant differences between the calculated closed sea area and actual monitoring results. The closed sea area values calculated from the fecal coliform load in drainage water tended to be higher than the actual monitoring results. Tidal currents and environmental factors such as salinity, water temperature, sunlight, and microbiological factors affect the survival of fecal indicator bacteria in seawater.