In order to investigate the effect of inflow of Yangze river on the distribution of chlorophyll-a, the results of serial oceanographic observation during 2000-2005 were used. The oceanographic conditions in the northern East China Sea is influenced by the Tsushima Warm Current and low saline water derived from the Yangze river. The distributions of these water masses vary significantly by the season in the northern East China Sea. The sea surface temperature and salinity were stable and concentrations of chlorophyll-a were low in the eastern part of 126°E. On the contrary, the salinity was significantly influenced by the low saline water derived from Yangze river with the high concentrations of chlorophyll-a. It is suggested that the low saline water inflowed from the Yangze river affects high concentrations of chlorophyll-a in the northern East China Sea in summer.

Temporal and spatial variabilities of chlorophyll a (Chl-a) in the northern East China Sea (ECS) are described, using both 8-day composite images of the SeaWiFS (Sea-viewing Wide Field-of-view Sensor) and in-situ data investigated in August and September during 2000-2005. Ocean color imagery showed that Chl-a concentrations on the continental shelf within the 50 m depth in the ECS were above 10 times higher than those of the Kuroshio area throughout the year. Higher concentrations (above 5 mg/m3) of yearly mean Chl-a were observed along the western part of the shelf near the coast of China. The standard deviation also showed the characteristics of the spatial variability near 122-124°E, where the western region of the East China Sea was grater than that of the eastern region. Particularly the significant concentration of Chl-a, up to 9 mg/m3, was found at the western part of 125°E in the in-situ data of 2002. The higher Chl-a concentrations of in-situ data were consistent with low salinity waters of below 30 psu. It means that there were the close relationship between the horizontal distribution of Chl-a and low salinity water.

High concentration of chlorophyll a occurred around the Ulleung Warm Eddy off Ulleung Island in the East Sea of Korea in spring season. The abnormal distributions of chlorophyll a were captured by satellite remote sensing and measured field data. The temporal and spatial scale of the abnormal distributions were around 20 days and 50km diameter off Ullung Island. The anomalies were quantified by estimated chlorophyll a derived from OCM and SeaWiFS ocean color data from 2000 to 2004. The origin of abnormal high concentrations was estimated by this study. It was that suspended material discharged from the Nakdong River and the coastal water located in the southeastern part of Korean Peninsula moved to northeastern coast, and then moved to off Ullung Island. The high chlorophyll a concentrations including inorganic materials were accumulated by anticyclonic eddy such as the Ullung Warm Eddy around Ullung Island in the East Sea of Korea in spring season.

A comparison between the estimated chlorophyll a from OSMI, the SeaWiFS and the chlorophyll a measured from the research cruises of National Fisheries Research and Development Institute was made. The updated empirical algorithm for calibrating and validating of the estimated chlorophyll a in the East China Sea was formulated by relationship between the estimated chlorophyll a and the field one. The relationship between the chlorophyll a and the band ratio(nLw490/555) was still highest in the OSMI data after launching of KOMPSAT satellite. The distributions of OSMI chlorophyll a were compared with those of sea surface temperature, zooplankton biomass, and catch amounts of the Pacific mackerel in the East China Sea. In case of the relationships in specially winter seasons of 2002 and 2004, the zooplankton and the fish were totally depended on the distributions of SST than those of chlorophyll a.

광계II(PSII)는 고등식물의 chloroplast에서 두 개의 광합성 반응중심 중의 하나이다. Chlorophyll a/b 광수확 복합체는 광계II를 위한 안테나 역할을 수행한다. 본 연구에서는 인삼의 잎조직을 제작한 cDNA library로부터 chlorophyll a/b-binding protein (Cab) 유전자를 분리하였다. 인삼 Cab유전자는 935 bp의 염기와 265개의 아미노산 잔기(pI 5.63)로 구성된 한 개의 ORF를 포함하고 있으며, 단백질의 분자량은 28.6 kDa으로 추정되었다. 인삼에서 분리한 Cab 유전자는 기존에 식물에서 보고된 유전자들과 유사성을 나타내었으며, 유사도는 68-92%로 나타났다. 아미노산 서열을 비교하여 유연관계를 분석한 결과 인삼의 Cab 유전자는 비교된 P. persica (AAC34983), A.thaliana (AAD28771), G. hirsutum (CAA38025), G. max (AAL29886), V. radiata (AAF89205) 등과 동일한 그룹으로 분리되었다.

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.

엽록도(SPAD-502)에 따른 엽록소와 질소농도의 관계를 구명하여 벼 재배기술 개발 및 품종육성의 기초 자료로 활용하고자 2001년 작물 시험장 벼 재배 포장에서 화성벼와 광안벼를 이용하여 실험 한 결과는 다음과 같다. 1. 염록도(SPAD값)는 표준시비량(11kg/10a)에서 이앙 이후부터 출수기까지 화성벼가 광안벼보다 1.2-4.4가 낮았다. 2. 엽록소 a함량과 SPAD값은 품종 구분 없이 정의 상관관계로서 엽록소 a 함량(y)은 SPAD값(x)과 y=0.9582x-6.9078 (R2 = 0.4307** )의 관계가 성립되었다. 3. 광안벼와 화성벼 지엽의 엽록소 함량은 유의하게 차이가 인정되었으나 엽록소 b의 함량은 차이가 없었다. 따라서 총엽록소 함량에 대한 엽록소 b의 비율은 유의하게 차이가 있었다. 4. SPAD값과 엽록소 함량의 상관관계는 엽록소 a는 화성벼는 0.616** , 광안벼는 0.536** 으로 두 품종 모두 정의 상관이 인정되었으나, 엽록소 b는 화성벼는 0.298, 광안벼는 0.549** 로 광안벼만이 인정되어 품종에 따른 차이가 있었으며, 전체 엽록소 함량은 화성벼는 0.541** 광안벼는 0.596** 로 정의 상관이 있었다. 5. SPAD 값과 질소농도의 상관관계는 화성벼는 0.608** , 광안벼는 0.685** 로 정의 상관이 인정되었다. 그러나 동일 처리의 시험에서도 품종간 SPAD값과 엽록소함량 및 질소농도의 관계가 다르게 나타나므로 SPAD값을 이용하여 엽록소 함량과 질소농도를 추정하는 것은 한계가 있는 것으로 생각된다. 재배시 62%로 크게 감소되었다.다.0일이었다.환경적응성이 낮은 경향이었다.은 모두 경운 유 ㆍ무에 관계없이 시비수준이 높을수록 높은 경향을 보였고, 10일에 최고수준을 보인 후 완만한 감소를 나타냈으며, K+, Ca2+에 비해 Mg2+이 보다 낮은 함량을 보였다.989년산 일반계를 10분도와 12분도로 도정하였을 때 도정도에 따른 밥맛의 차이는 없었다.X>CoOx는 Co3O4 로 존재하고, 반응 전의 경우에는 이와는 다른 chemical state를 보여주었다. XRD 및 XPS 결과를 바탕으로, 촉매표면에 존재하는 Co3O4 의 외부표면이 Co2TiO4 와 CoTiO3 같은 CoTiOx 로 encapsulation되어 있는 모델구조를 제안할 수 있고, 이는 반응시간의 함수로 나타나는 촉매활성에 있어서 전이영역의 존재를 잘 설명할 수 있을 뿐만 아니라, XRD와 XPS에서 얻어진 촉매의 물리화학적인 특성을 잘 반영할 수 있다. 나타냈고, 골격근과 눈 조직에서 피루브산에 대한 LDH의 친화력이 상당히 크므로 LDH가 혐기적 조건에서 효율적으로 기능을 하는 것으로 사료된다.5) and "Cleanliness of clothes ＆ features" (p ＜0.05) of VIP ward were significantly higher than those of a general ward.tive to apply.아울러 고려(考慮)해야 한다. 이것은 고무기술자(技術者)가 당면(當面)해야할 과제(課題)에 속(屬)하며 바람직 한것은 본장(本章)의 내용(內容)이 여러 상황하(狀況下)에서 당면(當面)한 문제(問題)에 대

For the stable production of high quality tea, the freezing resistance is a very important character. Most of the farmers have planted out-pollinated seeds that are not genetically pure. So, with small sample, a quick and simple method is required to test freezing resistance of lots of germ-plasm and early generation of hybrids. The absorbances(A530 nm) of TTC reduction solution at -5~circC were positively correlated with resistance to photoinhibition of PSII in 6 hour photoinhibitory treatments, being significantly fitted by simple linear regression (R2 =0.64** ). Chlorophyll fluorescence measured by Fv/Fm was found to be very useful in evaluating the relative levels of freezing resistance in tea.

In order to study on the variational characteristics of water quality and chlorophyll a concentration, the water samples were collected daily or three times a week during the period from April 1990 to November 1991 at Kukdong port located in the Northern Kamak bay of Southern Korea I made an analysis on biological factor as chlorophyll a concentration as well as physico-chemical factors such as water temperature, salinity, sigma-t, dissolved oxygen, nutrients (ammonia, nitrite, nitrate, phosphate, and silicate), N/P ratio and chemical oxygen demand. In Northern Kamak bay seasonal variations in physical factors such as water temperature, salinity and sigma-t were very marked. On the other hand, chemical factors such as nutrients concentration and COD were not so. Chemical factors, in particular, silicate were influenced by input of freshwater. And the roles of silicate on the seasonal succession of phytoplankton species composition was very low. Phytoplankton biomass as measured by chlorophyll a concentration was very high all the year round, and it was controlled by the combination of several factors, especially of N/P ratio determined by dissolved inorganic nitrogen.

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.