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부산 수영만 해상구조물 설치로 인한 파랑-유동환경변화 분석
박상길(Sang-Gil Park),이중우(Joon-Woo Lee),국승기(Seng-Gi Cook),양상용(Sang-Yong Yang),강석진(Suk-Jin Kang) 한국항해항만학회 2009 한국항해항만학회 학술대회논문집 Vol.2009 No.추계
부산 수영만 해상케이블카 설치예정수역에서 파랑 및 유동환경에 대한 기본 자료 조사와 아울러 대상해역에서 구조물을 설치하였을 때 주요 입사파에 대한 파랑 및 유동환경 변화 특성을 수치모델 시뮬레이션으로 분석하여 타당성을 검토하고자 하였다. 대상해역에서 광안대교가 설치된 조건이나 이의 외해측으로 일련의 해상케이블 지지구조물을 설치함에 따라 발생할 수 있는 환경 중 해저저질의 이동 및 표사에 영향을 미치는 파랑과 유동장 해석을 대상으로 하였다. 파랑해석은 SWAN 모델을 이용하여 분석하였고, 유동장 해석은 MIKE21 HD 모듈을 이용하여 해석하였다.
사고대비물질 취급자를 위한 비상대응계획 작성 프로그램 연구
김성범(Sung Bum Kim),조문식(Mun Sik Cho),박춘화(Choon Hwa Park),윤이(Yi Yoon),황경섭(Kyung Sup Hwang),양상용(Sang Yong Yang) 한국방재안전학회 2010 한국방재안전학회 논문집 Vol.3 No.2
자체방제계획서는 위험물질의 등급 주위환경의 피해, 사고대응계획 등으로 구성된 체계적인 관리제도이다. 자체방제계획서 작성지원 프로그램의 개발 목적은 사고를 예방하고, 사고를 제어할 수 있도록 안전관리 시스템을 각 시설에 제공하는 것이다. 이 프로그램은 MSDS(Material Safety Data Sheet), SOP(Standard Operation Procedure), ERP(Emergency Response Plan) 등 일반적인 안전관련 자료를 포함하고 있다. 자체방제계획서는 위험 확인, 평가, 예방 계획, 안전 분석 등으로 구성되어있다. 또한, 자체방제계획서 작성지원 프로그램은 정부 또는 관련 기관이 중소기업에서 발생 가능한 사고를 관리하는데 유용하다. Emergency preparedness plan (EPP) is the systematic management of activities that involve a material degree of risk of loss or other damage to the surroundings (people, property and environment), and the boundary of accident recovery plan (ARP). The main purpose of the program is to provide a safety management system to each facility in order to enable to prevent accident and to control accident immediately. The EPP includes not only typical safety-related documentations such as material safety data sheet (MSDS), standard operation procedure (SOP), emergency response plan (ERP). EPP is established basis of the preliminary safety analysis involving risk identification, assessment and prevention plans. The program is also helpful for government or related agencies to control a number of accidents in small-scale companies in the whole country.
최승익,안태석,양상용,유홍일,유재근 ( Seung Ik Choi,Tae Seok Ahn,Sang Yong Yang,Hong Il Rhu,Jae Keun Ryu ) 한국하천호수학회 1994 생태와 환경 Vol.27 No.2
To define the effects of fish(Hypophihalmichthys molltrix) predation on phytoplankton densities and activities of extracellular enzymes including phosphatase, cellobiohydrolase and β-glucosidase were weekly investigated both in fish and control aquariums. Eventhough there was no increment of nutrients by fish predation, chl. a concentration in the fish aquarium was 12.6mg m^-3, twice higher than in the control, and total bacterial number(AODC) was 1.1x10^7cells ml^-1, 5 times higher than control aquarium after 25 days. The V_(max) and K_m values of extracellular enzyme activities were higher in the fish aquarium. Especially, the V_(max) of β-glucosidase in the fish aquarium was 7 times higher than in the control. These results suggest that the predation and digestion of Hypophihalmichthys molltrix should cause the diversification of substrates of extracellular enzymes and stimulate nutrient cycles and degradation of organic materials.
낙동강 수계 하.폐수 처리시설의 방류수가 조류 성장 잠재력에 미치는 영향
서정관,이재정,양상용,정익교,Seo,Jeong-Gwan,Lee,Jae-Jeong,Yang,Sang-Yong,Jeong,Ik-Gyo 한국조류학회(藻類) 2003 ALGAE Vol.18 No.2
Effect of the effluent of the sewage and wastewater plants on the algal growth was investigated from the 19 plants located in the Nakdong river basin. Most of the samples showed high values of the algal growth potential (AGP) when they were mixed with natural river water at 20% of final concentration. At 20% of the mixing ratio, the mixed effluents of sewage and wastewater showed 3.5 and 1.8 times higher AGP than those of the natural river water. The higher AGP values are attributable to the high contents of phosphorus and ammonium in the effluent. The mixing ratio of effluents of the discharge/river flow was highest in the Kumho River (42.8%) followed by the middle of Nakdong River (22.7%), Kam Stream (13.9%), Byungsung Stream (13.3%), Yangsan Stream (7.9%), and Young River (5.4%). Comparison of the trophic state of the effluents with natural river water indicated that the effluents showed higher trophic values than natural water. Concentrations of total phosphorus, total nitrogen and conductivity in the effluents were 12.3, 4.9 and 5.3 times higher than the those found in natural river water respectively. The AGP values were highly related with the trophicity of the water especially on the concentrations of phosphate and ammonium. Toxicities of the treated sewage water, wastewater and livestock waste water tested by the luminescent bacteria, Vibrio fischerii were generally low.
권영호,서정관,박상원,양상용,Kwon, Young-Ho,Seo, Jung-Kwan,Park, Sang-Won,Yang, Sang-Yong 한국조류학회(藻類) 2006 ALGAE Vol.21 No.2
For the test organism of algal growth potential (AGP), the diatom in the genus Stephanodiscus which cause blooms in the Nakdong River was used instead of generally used strains of Selenastrum, Microcystis, or Anabaena. AGP results indicated that all the samples in the Nakdong River except for that from the Nakdan Bridge site were eutrophic state. Furthermore, the sample from Kumho River site was hypertrophic state. In the main stream Nakdong River, the value of AGP was lowest at the upstream Nakdan Bridge site and was highest at Koryoung Bridge site which is just downstream of Kumho River confluent point indicating the seriousness of pollution contributed by the Kumho River to the Nakdong River. Changes in the concentration of nutrients before and after the AGP tests and inter-relationship among the nutrients indicated that the growth of the Stephanodiscus in the AGP tests were mostly affected by the nitrate, silicate and phosphate. The limiting nutrient was identified by the nutrient addition experiments and the results showed that phosphate was the limiting nutrient for the growth of Stephanodiscus in the tested samples.