참나무 겨우살이의 생리활성을 알아보기 위해 전자공여 작용, SOD 유사활성, 총 폴리페놀 함량, Tyrosinase 저해효과 및 아질산염 소거작용을 측정하였다. 전자공여능은 추출용매의 비율에 따라 농도가 높아짐에 따라 전자공여능도 증가하였고, 특히 60% EtOH을 추출용매로 하여 25 mL/g의 비율로 추출한 실험구가 68.88%로 가장 높은 항산화력을 나타냈다(p50 mL/g>100 mL/g으로 농도가 높을수록 페놀함량도 유의적으로 높아졌고,

Three meteor-statistical forecasting models - the transfer function model, the time-series autoregressive model and the neural networks model - were tested to develop a daily forecasting model for Jejudo, where the need and demand for wind power forecasting has increased. All the meteorological observation sites in Jejudo have been classified into 6 groups using a cluster analysis. Four pairs of observation sites among them, all having strong wind speed correlation within the same meteorological group, were chosen for a model test. In the development of the wind speed forecasting model for Jejudo, it was confirmed that not only the use a wind dataset at the objective site itself, but the introduction of another wind dataset at the nearest site having a strong wind speed correlation within the same group, would enhance the goodness to fit of the forecasting. A transfer function model and a neural network model were also confirmed to offer reliable predictions, with the similar goodness to fit level.

A case study for the design of a wind farm in complex terrain was carried out using the wind farm site analysis software OpenWind, which has an open-source platform and is free to use. The Youngdeok Wind Farm, constructed on mountainous terrain in Korea, was chosen as a model site; the design process reproduced using OpenWind. A comparison of the positions of the wind turbine derived from the OpenWind optimization process and the current positions were in good agreement. The annual energy production predicted by OpenWind compared with the prediction by the micrositing software, WindSim, were also validated to within 1%. Therefore, it was confirmed that OpenWind can be used for a practical wind farm design project. It is also anticipating that this paper will provide a prototype process for the design of a wind farm site and offer a database for the post-evaluation of a constructed wind farm in Korea.

A system coupled the prognostic WRF mesoscale model and CALMET diagnostic model has been employed for predicting high-resolution wind field over complex coastal area. WRF has three nested grids down to 1km during two days from 24 August 2007 to 26 August 2007. CALMET simulation is performed using both initial meteorological field from WRF coarsest results and surface boundary condition that is Shuttle Radar Topography Mission (SRTM) 90m topography and Environmental Geographic Information System (EGIS) 30m landuse during same periods above. Four Automatic Weather System (AWS) and a Sonic Detection And Ranging (SODAR) are used to verify modeled wind fields. Horizontal wind fields in CM_100m is not only more complex but better simulated than WRF_1km results at Backwoon and Geumho in which there are shown stagnation, blocking effects and orographically driven winds. Being increased in horizontal grid spacing, CM_100m is well matched with vertically wind profile compared SODAR. This also mentions the importance of high-resolution surface boundary conditions when horizontal grid spacing is increased to produce detailed wind fields over complex terrain features.

We classified wind sectors according to the wind features in South Korea. In order to get the information of wind speed and wind direction, we used and improved on the atmospheric numerical model. We made use of detailed topographical data such as terrain height data of an interval of 3 seconds and landuse data produced at ministry of environment, Republic of Korea. The result of simulated wind field was improved. We carried out the cluster analysis to classify the wind sectors using the K-means clustering. South Korea was classified as 8 wind sectors to the annual wind field.

In order to make sure the impact of spatial resolution of wind energy map on the estimation of wind power density in the Korean Peninsula, the comparison studies on the characteristics of wind energy map with three different spatial resolutions were carried out. Numerical model used in the establishment of wind map is MM5 (5th generation Mesoscale Model) with RDAPS (Regional Data Assimilation and Prediction System) as initial and boundary data. Analyzed Period are four months (March, August, October, and December), which are representative of four seasons. Since high spatial resolution of wind map make the undulation of topography be clear, wind pattern in high resolution wind map is correspond well with topography pattern and maximum value of wind speed is also increase. Indication of island and mountains in wind energy map depends on the its spatial resolution, so wind patterns in Heuksan island and Jiri mountains are clearly different in high and low resolutions. And area averaged power density can be changed by estimation method of wind speed for unit area in the numerical model and by treatment of air density. Therefore the studiable resolution for the topography should be evaluated and set before the estimation of wind resources in the Korean Peninsula.

This study has analyzed the scale, location, resource potential and feasibility of offshore wind farm scientifically and systematically based on the national wind map and GIS. For long-term wind power development, this study pursues siting strategy building, selection of target area and deciding development priority as well as the presenting a basis for assessment that are necessary for policy decision making by making theme layers under GIS environment. According to the analysis after organizing technological development by stages, even if only the most suitable sites are developed among the area of offshore wind farm candidates that can be developed under the current technological standard, it has been evaluated as being able to develop about 3 times of the wind power dissemination target until 2012. It is expected that about 5% of territorial water area can be developed in a short-term future while the southern offshore area possessing relatively favorable wind resource than the western offshore has been identified as the most feasible site. While about 23% of territorial water area has been classified as potential area for offshore wind farm development in a long-term future, even Jeju Island and offshore of Ulsan possessing excellent wind resource have been analyzed as feasible sites. The feasibility assessment of offshore wind farm development established by this study is expected to assist national strategy building for accomplishing the wind power dissemination target.

The physical properties of an atmospheric boundary layer in Wolryong, a west coastal region of Jeju, South Korea, in terms of the atmospheric stability and roughness length, is important and relevant to both engineers and scientists. The study is aiming to understand the atmospheric stability around this region and its effect on the roughness length. We calculate the Monin-Obukhov length(L) against 3 typical regions of the atmospheric condition - unstable regime (-5<H/L<-0.2), neutral regime (-0.2≤H/L≤0.2) and stable regime (0.2<H/L<2), where H is the measurement height. The diurnal Monin-Obukhov length substantially varies in the night, but most of the H/L comes under the neutral regime. The roughness length scale can be derived by three different methods - logarithmic profile, standard deviation and gust factor method. The finding in the study is that the methods of the standard deviation and the gust factor, apart from the logarithmic profile, are all similar in terms of the roughness length under the different atmospheric conditions. In addition, they have sufficiently shown the effect of obstacles and surface conditions around the measurement site.

As a part of effort to establish an offshore wind resource assessment system of the Korean Peninsula, a numeric wind simulation using mesoscale climate model MM5 and a spatial distribution of offshore wind extracted from SAR remote-sensing satellite image is compared and analyzed. According to the analyzed results, the numeric wind simulation is found to have wind speed over predication tendency at the coastal sea area. Therefore, it is determined that a high-resolution wind simulation is required for complicated coastal landforms. The two methods are verified as useful ways to identify the spatial distribution of offshore wind by mutual complementation and if the meteor-statistical comparative analysis is performed in the future using adequate number of satellite images, it is expected to derive a general methodology enabling systematic validation and correction of the numeric wind simulation.

뽕잎과 오디를 물, 50% 에탄올, 100% 에탄올 용매를 이용하여 microwave로 추출하여 이의 생리활성을 측정하였다. 뽕잎과 오디의 전자공여작용의 측정결과 모두 용매별 차이를 보였으며, 물과 50% 에탄올 추출물에서 로 높은 활성을 보였다. Tyrosinase는 로 20% 내외의 결과를 보였으며 용매별 차이는 없었다. SOD 유사활성 측정결과 뽕잎과 오디 모두 에탄올 농도가 증가할수록 활성이 감소하는 경향을 보여 물 추출물의 활성이 높게

In order to support the development of wind farms in Jejudo, a wind resource database for Jejudo has been established using a meteor-statistical analysis of KIER(Korea Institute of Energy Research) met-mast measurements and KMA(Korea Meteorological Administration) weather data. The analysis included wind statistics, tower shading, an exposure category classification using satellite images, the effect of atmospheric stability on the wind profile exponent, and a correlation matrix of wind speed to gain an understanding of the meteorological correlation between long-term weather observation stations and short-term met-mast measurements. The wind resource database for Jejudo, is to be provided as an add-on to Google EarthTM, which is expected to be utilized as a guideline for the selection of an appropriate reference site for long-term correction in the next wind farm development project.

구아바 잎을 이용한 가공제품개발의 기초자료를 마련하고자 구아바 잎을 발효, 증숙 및 볶음 처리하여 품질특성을 살펴보았다. 그 결과 총 페놀성 화합물 함량의 경우 볶음 처리한 것이 높게 나타났으며, tyrosinase 저해활성 및 전자공여능은 증숙 처리한 것이 우수한 것으로 나타났다. 또한 전반적인 기호도에 있어서는 발효 및 증숙 처리한 것이 우수한 것으로 나타났다. 한편 데침 및 증숙 처리 시간에 따른 품질특성을 살펴본 결과, 총 페놀성 화합물

홍삼 첨가 액상청국장의 추출공정별 청국장 추출물의 특성 비교 및 청국장의 최적 추출 조건을 설정하고자 하였다. 용매로 물을 사용하여 추출한 홍삼 첨가 액상청국장을 각각 마이크로웨이브 파워별(30, 60, 90, 120 및 150 W), 시간별(1, 5, 9, 13 및 17분)로 추출한 후 생리활성 실험을 수행하였을 때, 수율, 전자공여능, 아질산염 소거능, tyrosinase 저해작용, SOD 유사 활성 등의 생리활성 측정을 통해 추출 최적점을

볶음처리한 새송이버섯의 마이크로웨이브 추출조건, 즉 에탄올 농도, 추출시간 및 마이크로웨이브 power에 따른 품질특성을 살펴보았다. 총 페놀성 화합물 함량, 전자공여능 및 pH 1.2에서의 아질산염소거능은 50% 에탄올로 추출한 경우 높게 나타났다. SOD 유사활성은 75% 에탄을 농도로 추출하였을때 가장 높은 활성을 나타났다. 가용성 고형분 및 총 페놀성 화합물 함량은 추출시간이 증가할수록 증가하다가 7분일 때 가장 높게 나타났으며, 전자공여

본 실험은 반응표면분석법을 이용하여 양배추(썸머파워)의 추출조건에 따른 이화학적 특성을 평가하였다. 중심합성계획법에 따라 시료에 대한 용매비(mL/g), 에탄올 농도() 및 추출온도()를 달리하였을 때 회귀식의 는 추출수율, 전자공여작용, tyrosinase 저해효과 및 SOD유사활성에서 각각 0.8162(p mL/g, 에탄을 농도, 추출온도 로 나타났다. 최적 추출조건 범위내의 임의의 조건인 시료에 대한 용매비 25 mL/g, 에탄을 농도

Recently air quality modeling studies for industrial complex and large cities located in the coastal regions have been carried out. Especially, the representation of atmospheric flow fields within a model domain is very important, because an adequate air quality simulation requires an accurate portrayal of the realistic three- dimensional wind fields. Therefore this study investigated effect of using high resolution terrain height data and FDDA with observational data to reflect local characteristics in numerical simulation. So the experiments were designed according to FDDA and the detail terrain height with 3sec resolution or not. Case 30s was the experiment using the terrain height data of USGS without FDDA and Case 3s was the experiment using the detail terrain height data of Ministry of Environment without FDDA and Case 3sF was experiment using the detail terrain height data of Ministry of Environment with FDDA. The results of experiments were more remarkable. In Case 3s and Case 3sF, temperature indicated similar tendency comparing to observational data predicting maximum temperature during the daytime and wind speed made weakly for difference of terrain height. Also Case 3sF had more adequate tendency than Case 3s at dawn.

양배추의 고부가가치 이용방안 연구의 일환으로 선택적 가열 및 추출특성이 알려진 마이크로파 에너지(50 W, 2,450 MHz)를 이용하여 양배추 추출물의 총 수율과 총 페놀 함량 및 전자공여능의 효율적 추출조건을 설정하였다. 에탄올 용매에서 건조 양배추의 입자 크기는 20 mesh 정도가 적당하였고, 시료와 용매비는 생체시료(수분 )와 건조시료(수분 ) 모두에서 1:10(5 g/50 mL) 정도가 가장 타당한 것으로 나타났다. 추출용매의 영향에서

생약재의 용매별 추출액에 대한 생리활성 측정 결과 총폴리페놀 함량은 모든 생약재가 50 ethanol 추출액에서 가장 우수하였으며, 생약재 별로는 감초의 50 ethanol 추출액이 2.23로 가장 높은 함량을 나타내었다. 전자공여 작용은 감초 water 추출액이 81.81로 가장 우수하였으며, 감초, 건강는 water 추출액이 두충, 건마늘, 인삼은 50 ethanol 추출액에서 다른 용매에 비해 높은 전자공여 효과를 나타내었다. Superox

구기자 추출액의 추출 특성과 추출액의 항산화성을 검토하여 구기자의 추출 조건을 결정함으로써 구기자 유효성분의 식품 소재화를 위한 기초자료를 얻고자 하였다 용매와의 비율을 결정하기 위해 8배, 10배, 12배, 14배의 water를 가하여 추출 수율을 비교한 결과 water와의 비율이 10배일때 추출 수율이 가장 좋은 것으로 나타났다. 추출물의 가용성 고형분은 water 추출액에서 5.0 Brix로 가장 높은 함량을 나타내었다. 추출액의 탁도는 5