• 한국습지학회지
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• 제6권2호
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• pp.85-93
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• 2004

• 한국대기환경학회:학술대회논문집
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• 한국대기환경학회 1999년도 춘계학술대회 논문집
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• pp.55-56
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• 1999

• 한국대기환경학회:학술대회논문집
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• 한국대기환경학회 1999년도 춘계학술대회 논문집
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• pp.125-127
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• 1999

• 한국수산과학회지
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• 제55권5호
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• pp.505-513
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• 2022

In this study, 143 strains of Enterococcus spp. were isolated from inland pollution sources near shellfish farms on the west coast of South Korea. Not all isolated Enterococcus spp. strains possessed vancomycin resistance genes (VanA and VanB). However, since vancomycin-resistance Enterococcus (VRE) have been detected not only in the clinical field but also out in the world, it is possible that the VRE gene may be transferred to other bacterial strains commonly found in coastal waters where seafood is produced. It is important to monitor trends in the appearance of VRE. In addition, antimicrobial resistance patterns of isolates were examined in this study. Overall antimicrobial resistance rates were high: ciprofloxacin (32.2% of isolates resistant), chloramphenicol (30.8%), quinupristin/dalfopristin (19.6%), and tylosin (15.4%). Eight E. faecium strains (6.2%), out of the 129 strains assessed, showed multidrug resistance. All multidrug-resistant E. faecium showed resistance to erythromycin, quinupristin/dalfopristin, tetracycline, and tylosin, in all 14 strains. All multidrug-resistant E. faecalis showed resistance to erythromycin, quinupristin/dalfopristin, tetracycline, and tylosin. Both multidrug-resistant E. faecium and multidrug-resistant E. faecalis showed common resistance to erythromycin, quinupristin/dalfopristin, tetracycline, and tylosin.

• Ocean and Polar Research
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• 제27권4호
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• pp.381-395
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• 2005

The spatial distributions of macrobenthic communities in Masan Bay were investigated during summer and winter, 2004. A total of 104 species were sampled with mean density of $448ind./m^2$ and biomass of $77.1g/m^2$ in winter. In summer, a total of 107 species occurred with $485ind./m^2$ and a biomass of $94.5g/m^2$. The most dominant species in winter were Paraprionospio pinnata (24.2%) among polychaetous worms and Theora fragilis (14.1%) among molluscs, but they were replaced in summer by Prionospio chirrifera (20.4%) and Lumbrineris longifolia (14.5%). The difference in species composition and abundance of benthic communities between the two seasons was due to the hypoxia in the bottom layer of the inner bay during summer, which defaunated the macrofauna of the sediments. In the winter when DO concentration increased to normoxia, the pelagic larvae of benthic fauna settled in the soft sediments, but there was a spatial gradient in values of total biomass, density, and H' and benthic pollution index (BPI): higher values were found toward the mouth of the bay. The multivariate analyses like the cluster analysis and MDS ordination showed that Masan Bay could be divided into two or four stational groups in winter and summer whether the hypoxia occurred or not. Group I consisted of sites at the inner bay and central area and Group II, sites at the bay mouth. In summer the inner bay area could be further divided into the shallow impoverished area and the deeper abiotic one.

• 한국해양환경ㆍ에너지학회지
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• 제12권4호
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• pp.279-283
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• 2009

2007년 12월 7일 발생한 허베이스피리트호 원유유출 사고로 약 12,547 kL의 기름이 해상으로 유출되어 서해안의 해안선이 광범위하게 기름으로 뒤덮이는 결과가 초래되었다. 사고발생 며칠 후부터 타르볼이 서남해안에서 관측되었으며, 이에 대한 방제를 위해 해양경찰(KCG)은 해상에서는 뜰채 및 그물끌기 방법을 이용하였고, 해안에서는 그물치기, 주워내기, 쓸어 담기 등 3가지 방제방법을 이용하였다. 그물막 치기 방법은 해안이 타르볼로 오염되는 것을 예방하는데 효과적이었으며, 사고당시의 계절이 겨울이었던 점은 타르볼이 쉽게 굳어 자원봉사자나 주민들이 주워 내거나 쓸어 담는데 큰 이점이 될 수 있었다.

• 한국해양공학회지
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• 제14권2호
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• pp.13-18
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• 2000

Recently due to the environmental pollution and the requirement for the substitute energy the interest for development of the solar energy system has been highly escalated It has been approved that the solar energy is a very useful on e because of purity and low cost. Some studies about the evaluation of solar radiation on the land has been carried out but few studies on the sea. This paper deals with a study on the evaluation of solar radiation on the sea. The experiments were carried out on the training vessel on the adjacent water of Korea Japan and China for twenty days. The distributions of solar radiation from the sea were changed into nonlinear in from according to the temperature. The solar radiation on the sea has a great influence on the velocity of wind as well as the temperature The distribuition of solar radiation has higher values on the track of the coastal sea than the open sea at same conditions.

• 한국대기환경학회지
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• 제20권3호
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• pp.345-360
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• 2004

The late sea-breeze and its impacts on ozone distributions were investigated during April to September from 1998 to 2002, in the Busan metropolitan area (including surrounding areas) using the surface ozone concentrations (obtained at 9 monitoring sites), local meteorological variables (obtained near the shore), together with synoptic data. The urban scale ozone concentration was also simulated using the MM5/UAM-V to better understand the role of late sea-breeze in Busan. The results from observation study showed that most of the late sea-breeze occurred when weak offshore synoptic flow (northwesterly) suppressed development of sea - breeze, and the ozone concentration level and frequencies exceeding ozone standard increased with the onset time of sea breeze. We also found that the late sea-breeze clearly induces relatively weak wind speed and high temperature during the daytime As a result it enhances the photochemical ozone accumulation and delays the occurrence time of the averaged maximum ozone concentrations. The results of simulation for high ozone episode (24 August, 2001) by MM5/UAM -V revealed that the late sea-breeze interacted with weak offshore synoptic wind can contribute significantly to high ozone concentration in the coastal urban area. The simulated horizontal and vertical distribution of ozone concentration indicated that ozone can be accumulated over the sea under stagnant condition and return to the land in the late afternoon with the sea breeze, suggesting both the relationship between late sea-breeze and recirculation and the importance of late sea -breeze effects influencing severe ozone pollution in Busan.

• 디지털융복합연구
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• 제20권5호
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• pp.547-557
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• 2022

해양 유류오염 및 유출량 증가에 따라 방제능력을 추가로 확보에는 많은 위험이 있다. 현재 해역에 배치된 방제선을 재배치하여 유휴능력을 개선하고 부족한 해역에 배치하고자 하고자 해양오염지수를 도출하고 해역별 해양오염지수 대비 방제능력을 비교하여 방제선 배치의 적절성을 검증하였다. 해양오염을 유발하는 항목에 대한 해역별 수치에 전문가 집단에서 도출한 가중치를 곱하여 해양유류 오염위험지수를 도출하였다. 해역별 해양오염 위험지수(F) 대비 방제능력(A)이 부족한 해역은 목포(F:13.4, A:1.9), 부산(F:14.3, A:6.4), 여수(F:21.5, A:16.6)이고, 여유있는 해역은 마산(F:5.9, A:13.3), 군산(F:1.7, A:8.3), 제주(F:2.7, A:6.9)이다. 따라서 해양오염 위험도에 비례한 평준화된 방제능력을 제고하기 위해 방제능력 여유 해역인 마산, 군산, 제주의 방제선을 방제능력 부족해역인 목포, 부산, 여수으로 재배치되어야 함을 시사한다.

• 한국환경과학회지
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• 제23권2호
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• pp.331-333
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• 2014

We investigated the effects of sea urchin shell powder on 2 volatile fatty acids, acetic and butyric acid, in poultry litter. A total of 60 1-d-old male broiler chicks (Arbor Acres) were allocated to 2 treatments (basal diet and 1% sea urchin shell powder) with 3 replicates of 10 birds each. During the 4-week experimental period, significant differences in acetic acid and butyric acid concentrations were observed between treatments (P < 0.05), except for acetic acid at 1 week. Additions of 1% sea urchin shell powder resulted in lower acetic and butyric acid concentrations compared to the litter of control birds. We conclude that the sea urchin shell powder used in this study might prove beneficial in reducing environmental pollution caused by poultry litter.