The purpose of this paper is to establish specifications, to provide design database for the construction of the sea pools(30m x60m x 1.2m). When water overflows by high waves, 3D-analysis by SAP2000 software is required for designing of sea pools in order to settle the problems that the degradation of the concrete durability. This result of analysis show that the strngth of concrete over 60MPa and the distance of 4m plie is more advantageous, then that of 2m.

The purpose of this paper is to establish specifications and to make database for the construction of sea pools. Sea pools are faced with sea water including salts, so it will be used that high strength concrete, reinforced high strength and urethane for its construction. 3D-analysis by SAP2000 software is required for designing of sea pools in order to confirm its degradation of the concrete durability. This results show that the strength of concrete of 40MPa is the most suitable and 3m wave is more advantageous than that of 4m.

The purpose of this paper is to establish specifications and to make database for the construction of sea pools. Sea pools are faced with sea water including salts, so it will be used that high strength concrete, reinforced high strength and urethane for its construction. 3D-analysis by SAP2000 software is required for designing of sea pools in order to confirm its degradation of the concrete durability. This results show that the strength of concrete of 50MPa is the most suitable and 4m wave is more advantageous than that of 2m.

The purpose of this paper is to establish specifications, to provide design database for the construction of the sea pools(30m x60m x 1.5m). In case of water overflows by high waves, 3D-analysis by SAP2000 software is required for designing of sea pools in order to settle the problems that the degradation of the concrete durability.

3D-analysis by SAP2000 software is required for designing of sea pools in order to settle the problems regarding the degradation of the concrete durability. Sea pools are faced with sea water including salts so it is used high strength concrete, reinforced high strength and urethane for its construction. The purpose of this paper is to establish specifications and data for the construction of the sea pools.

The purpose of this paper is to establish specifications and to make database for the construction of sea pools. Sea pools are faced with sea water including salts so it is used that high strength concrete, reinforced high strength and urethane for its construction. 3D-analysis by SAP2000 software is required for designing of sea pools in order to solved the problems regarding the degradation of the concrete durability.

지구가 마그마 바다 상태에서 현재의 층상화된 내부 구조로 분화되는 진화과정의 체계적인 이해를 위하여 규산염 용융체와 같은 비정질 산화물의 결정화과정 메커니즘 규명이 필요하다. 이를 위하여 결정화 과정에서 수반하는 용융체의 원자구조 변화를 실험적으로 측정하여 결정화 과정을 정량적으로 정립할 수 있다. 본 연구에서는 고상 핵자기 공명 분광분석(NMR)을 이용하여 졸겔법으로 합성한 비정질 알루미나(Al2O3)의 온도-가열 시간 변화에 따른 원자구조 변화로부터, 비정질-결정질 상전이 과정을 원자 단위에서 규명하였다. 비정질 Al2O3의 27Al 3QMAS NMR 실험 결과 다량의 배위수 4, 5의 알루미늄([4,5]Al)과 소량의 배위수 6인 알루미늄([6]Al)이 명확히 구분되어 관찰되었고, 973 K와 1,073 K에서 각각 가열시간을 증가시킬수록 배위수 5인 알루미늄([5]Al)이 감소하였다. 본 연구에서는 [5]Al의 분율을 결정화의 지표로 이용하여 27Al 3QMAS NMR 결과를 정량 분석하였다. 분석을 통해 점진적인 원자구조의 변화로 관찰되는 비정질 산화물의 상전이 과정이 결정화 혹은 비정질 내 구조적 무질서도의 변화와 같은 복합적인 단계로 구성될 수 있음을 확인하였다. 이러한 연구 결과는 다양한 자연계의 다성분계 규산염 용융체 결정화 과정 및 마그마 바다의 분화와 지구의 화학적 진화에 대한 원자 단위의 이해증진에 도움을 줄 것이다.

The variability within and between Korean pond-smelt (Hypomesus nipponensis; KPS) and Canadian capelin (Mallotus villosus; CCP) were studied in order to clarify the genetic distances and differences. The dendrogram obtained by the seven primers indicates cluster 1 (KOREAN 01KOREAN 11) and cluster 2 (CANADIAN 12CANADIAN 22). The longest genetic distance displaying significant molecular differences was found to exist between individuals in the two geographic species of Osmeridae, between individuals' no. 10 of Korean and no. 18 of Canadian (0.686). 121 unique shared loci to each species, with an average of 17.3 per primer, were observed in the KPS species, and 264 loci, with an average of 37.7 per primer, were observed in the CCP species. 77 shared loci by the two species, with an average of 11.0 per primer, were observed in the two fish species. RAPD analysis showed that the KPS species was more genetically diverse than the CCP species. KPS species may have high levels of genomic DNA variability owing to the introduction of the wild individuals from the other sites to sampling sites although it may be the geographically diverse distribution of this species. As stated above, the existence of species discrimination and genetic variability between the KPS and the CCP species was identified by RAPD analysis.

본 연구에서는 여름철 호남 서해안 지역의 강수량 분포에 영향을 미치는 요인을 분석하고, 그 원인을 파악하기 위해 1971~2005년간의 호남 서해안 지역에 위치한 목포와 군산의 여름철 강수량 변화와 서해상의 죽도와 말도의 해수면 온도 변화, 그리고 두 변수간의 관계를 분석하였다. 또한 호남 서해안 지역의 여름철 강수 특성이 이 지역의 농업 발달에 미친 영향에 대해서도 파악하였다. 서해에 면한 호남 지방의 서해안 지역은 전반적으로 바다의 영향을 많이 받는다. 따라서 서해는 조석 현상으로 인한 냉수대와 조석 전선으로 인해 해수면이 차가워진다. 이로 인해 이를 지나는 공기가 냉각되어 안정되므로 비를 적게 내리는 소우 현상이 나타난다. 최근 이 지역의 강수량 증가 경향은 서해의 해수면 수온 상승에 따른 결과이다. 그리고 이는 이 지역의 여름철 강수가 서해의 영향을 강하게 받고 있음을 반증한다. 이로 인해 호남 지방의 서해안 지역과 그에 접한 평야 지역은 우리나라의 여름철 가뭄 발생 비율이 전국에서 가장 높은 지역에 속하였다.

In order to study the temporal variations of nutrients and chlorophyll-a in the Bottol Bada, three field observations were carried out on 20, 23 and 26 July, 2004. The low N:P values exhibit nitrogen deficiency during the periods of observation. This result is not representative of typical summer environment in the southern coast of Korea. The possible mechanisms are as follows: 1) The freshwater inflow was not sufficient for the supply of nitrogen because the total precipitation was 11.9 mm in July, 2004. This amount is no more than 5% in normal precipitation in July. 2) There was an inflow of oceanic water under the subsurface into the Bottol Bada. Even though the oceanic water comprises more nutrients, it produces the stratification between the surface and the subsurface water and seems to prevent the supply of nutrinets to the surface layer. 3) The high chlorophyll-a concentration of 1.2 μg/L was shown near the narrow channel between Gae-do and Geumo-do. This seems to be resulted from the inflow of water from Gamak Bay.

Based on the observation on 20, 23 and 26 July 2004, the distributions of temperature, salinity and stratification was investigated in relation to ebb, turn of tide and flood. The results are as follows: 1) The high temperature and low saline water with 23.5～24.0℃ and 32.4～33.0psu existed at Naro Island. 2) The cold surface water below 21.0℃ and 33.0～33.4psu appeared in the area near Gae Island and Geumo Island. 3) The cold and saline water, below 24.0℃ at the surface and 17.0℃ near the bottom, 32.8～33.8psu at the surface and 33.8～34.0psu near the bottom, existed in Sori Island. These waters were more saline compared to the South Sea Coastal Water with about 31.8psu. This suggests that the oceanic saline water intruded into the Bottol Bada through the area near Sori Island. The stratification appeared during all the observation periods due to a high solar radiation of 22MJ/m2, and a weak wind speed of 2.9m/s on the average while the mean speed of wind in July is around 3.9 m/s. It qualitatively suggested that the stratification was maintained during the observation periods because of a high solar radiation, a weak wind speed and intrusion of saline oceanic water.