The sediment in the highly contaminated Gamjeon brook was collected, mixed with the raw material of the tile, and then the commercial tile was produced using the mixture. The concentrations of the heavy metals in the mixture-before and after the tile was produced-were analyzed and the effects of the acid solution on the produced file were examined. The production of the tiles was successful and the result of heavy metal analysis showed that the concentration of Fe was the highest and that of Cd was the lowest The amount of heavy metal in the sediment - the raw material of the tile mixture was more than that of the produced tile. The elution concentration of the heavy metal by the acid solution(pH = 4 - 7) was low and the quality of the produced tile was better than the commercial tile. The result of this study suggested that the contaminated sediment was removed to produce good tiles, therefore the water pollution and soil pollution were reduced.

A study was carried out on the distribution of chlorophyll a and water quality in the dry season in Yosuhae bay and adjoining sea, Southern Korea, in July of 1994. Concentration of salinity and phosphate were lower in the outer bay than in the inner bay. While nitrate and silicate were higher in the former than in the latter. We were identified with coastal water of origin from China with the lower salinity in outer bay. The China coastal water was characteristic of high nutrients and phytoplankton biomass, such as chlorophyll a. The principal component analysis (PCA) on the analytical data proved that high density of phytoplankton biomass occurred under the condition of low salinity and high concentration of dissolved inorganic nutrients. It is thought that the thermoharine structure and biological produtions of Yosuhae bay were controlled by the China coastal water in the outer bay.

The assesment of the safety of ship's transit in a curved narrow channel consists of the maneuvering safety determined by the chance of running aground, the maneuvering difficulty determined by ship's workload, and shiphandler's subjective evaluation. In this study, to examine the correlation between shiphandler's subjective evaluation and the maneuvering safety, the real-time and full-mission shiphandling simulator in the Korea Marine Training & Research Institute(KMTRI) was utilized. On the conning bridge of the shiphandling simulator, 50 experienced masters have conducted the modeled vessel of 60, 000 deadweight tonnage along the designed channel under 3 different environmental conditions. It was possible to assess and analyze theoretically the correlation between the shiphandler's subjective evaluation and maneuvering difficulty under each environmental condition by quantifying the data obtained from the tests. The results are as follows: ① As the degree of maneuvering difficulty increases, the shiphandler's subjective evaluation increases in the designed channel under the designed environmental condition. ② In the straight area, not the bend of the designed channel, maneuvering difficulty increases sharply under the environmental condition of current and wind coming from the stern.

최근 소비자들의 신선한 채소 요구에 따른 수요증가로 볼 때 어린순의 소비는 크게 늘어 날 것으로 보나 국내에서는 무순외에는 거의 개발이 안된 실정이다. 이에 본 연구에서는 약용식물중에서 어린순을 채소로 개발할 수 있는 것을 선발하고자 기초연구로써 수행한 결과는 다음과 같았다. 1. 실험에 사용된 12종의 식물중에서 가걱은 들깨, 메밀, 무등이 낮은 값을 보였다. 2. 발아율은 전체적으로 낮았으나 그중 무, 소엽, 메밀, 항금 및 들깨가 상대적으로 높은 발아율을 보였다. 3. 발아세는 발아율보다 낮으며 그중 소엽, 무, 메밀 및 황금이 상대적으로 높은 발아세를 보였다. 4. 식미특성중 외관상으로 무가 가장 높은 점수를 보였다. 5. 맛은 황금이 가장 높은 점수를 보였다. 6. 조직감은 메밀이 가장 높은 점수를 보였다. 7. 기호도는 소엽이 가장 높은 점수를 보였다.

우리 나라에서 한양재료로 사용되고 있는 약초의 어린잎과 전초(全草)를 산채류로 이용하기 위한 기초자료를 얻기 위하여 식용이 가능한 7종의 약초 어린잎 및 전초(全草)의 일반성분, 무기성분 및 아미노산등을 분석하였다. 독활을 포함해서 7종의 약초 어린잎 및 전초(全草)의 수분함량은 79.74~85.97%의 범위로 다른 야채류에 비해 낮게 나타났으며, 조단백질의 함량은 당귀(1.12%)와 방풍(1.27%)을 제외하고는 대부분 2%정도로 야채류와 비슷한 경향을 보였다. 그리고 조지방은 0.69~1.36%, 조섬유는 1.8~3.9%, 조회분은 1.58~2.79%의 범위로로 각각 나타나 종류 별로는 다소의 차이를 보이고 있으나 일반 야채류와 대체적으로 비슷하였다. 무기성분에서는 모든 시료에서 K함량이 202~504mg%로 가장 높았고 Ca, Mg 및 Natns으로 나타났다. 총 아미노산의 함량은 두릅 965mg%, 황금 930mg%, 독활 879mg%, 일당귀 851mg%, 배초향가 747mg% 및 방풍 615mg%의 함량을 보였다. 아미노산의 조성을 보면 약초의 종류에 따라 아미노산의 종류별 함량 차이가 있으나 전반적으로 aspartic acid와 glutamic acid가 공통적으로 많았으며, methionine과 cystine은 모든 시료에서 가장 적게 나타났다.