뱀딸기 추출물의 항산화, 항염, 항암활성을 검정한 결과는 다음과 같다. ·뱀딸기(D. chrysantha) 부위별 항산화활성을 비교해본 결과 전초 > 지상부 > 열매의 순으로 전초가 Ascorbic acid(34.72μg/ml)보다 높은 활성을 나타냈으며, 열매가 가장 낮게 나타났다. ·항염활성은 전초 > 지상부 > 열매의 순으로 항산화활성과 유사한 경향을 보였다. ·항암활성은 인체 자궁경부암세포 HeLa에 대해서 열매가 가장 높게 나타났으며, 전초는 낮게 나타났다. 간암세포 SKHep1에 대해서 지상부와 전초가 비슷한 활성으로 열매보다는 높게 나타났으나 전체적으로 낮은 활성을 나타내었다.

Continuing and Developing the growth, the company should focus on 'time to market of high quality production' and 'cost down'. Due to the complexity of the production, reliability is being one of the important factor. In this study, in particular, focus on parts reliability test improvement about printer product and proceeded. Need test improvement for time to market that is developed, and reduce expense with test period that is required at Reliability Test time of new parts and should high quality level of product. Finally huge Failure Cost (F-COST) occurs because quality level of product drops if parts that accomplish product does not ensure reliability and this is associated by malfunction in marketplace.

The environmental regulation of a product is a global trend. The environmental regulation directives such as RoHS, WEEE, ELV and REACH have impacted Korean export-oriented auto parts manufacturer and affects the export of the product to aboard. In electronics manufacture and auto parts manufacturer, there are different systems for environmental regulation compliance. Nowadays the automotive mechatronics parts in a car are increasing. The HEV and intelligent car will need more mechatronics parts. It is necessary to apply the environmental regulation system of electronics to the automotive parts. In this paper, we proposed the application of PDX standard used in electronic industry to the BOM of the auto parts manufactures and showed an example of generated BOM for selected auto part using PDX. The PDX-based BOM can be used for the recording of environmental substances of the automotive mechatronics part and help the collaboration across auto parts manufactures in accordance with environmental regulation.

본 연구는 국내 31개 호소 지점을 대상으로 동식물플랑크톤 생체량 및 생태학적 모델 적용을 고려한 호소간의 플랑크톤 동태 비교에 목적이 있다. 조사기간 동안 총 89종의 동물플랑크톤(윤충류 70종, 지각류 14종, 요각류 5종)과 554종의 식물플랑크톤(규조류 176종, 녹조류 237종, 남조류 68종 그리고 기타 73종)이 동정 확인 되었다. 플랑크톤 밀도 및 종 다양도는 지점별 및 계절별 상이한 차이를 나타내었다. 전체 호소의 연평균 총 식물플랑크톤

Gas turbines for power generating operate in a very high temperature condition and use natural gas for fuel. For this reason, many cases of damage happen at hot gas parts which are severely affected by high temperature gas and many cases of explosion occur by fuel gas. So a lot of efforts should be made to prevent hot gas parts damage and gas explosion accidents. Though there are many damage cases and explosion accidents, it is very difficult to find out the root causes of hot gas parts damage caused by gas explosion due to gas leakage in the heat exchanger for air cooling and gas heating. To prevent gas turbine from damage caused by gas explosion, removal of leakage gas from gas turbine is inevitably required before firing the gas turbine and installing alarm systems is also required for detecting gas leakage at stop valve to turbine while shut down.

Recently the competition of market is getting more and more severe as the block of economic market has been broken due to the free trade of the world. In the mean time, the companies are experiencing more hardship than before because of the difficulties in employing workers, increases of salray and fixed cost of production and higher demand on the product quality from the consumer. Therefore various ways are needed for the resolutions of the production technology and the marketing. Production information system is one way which can bring a innovative advance of the company. In this study, we will examine the design methodology of the POP system for its efficient implementation as a production information system in the automobile parts manufacturing process. For this, we are to suggest the strategy of system implementation as we examine the process analysis, its redesign and coding for construction and testing and performing for its implementation.

자동차 부품 개발은 대부분 프로젝트의 형태로 진행된다. 프로젝트의 일정을 단축하는 것이 기업의 이윤 창출에 도움이 되는 것은 사실이다. 하지만 자동차 부품을 개발하는 기업의 입장에서는 일정 단축 보다는 일정 내 고객의 요구 품질을 만족하는 제품을 공급하는 것이 더 중요하다. 이는 프로젝트 일정 단축이 부품업체의 권한 밖에 있으며, 또한 일정 단축에서 오는 이익보다는 일정 지연으로 인한 손실이 더 크기 때문 일 것이다. 이에 본 연구는 일정 관리 기법인 PERT/CPM, TOC(제약이론)를 기반으로 한 CCPM 기법과 자동차 산업의 신규 개발 부품 품질 보증을 위한 APQP(사전제품품질계획) 절차 등의 이론들을 고찰하고, PERT/CPM 기법을 적용한 상용 프로그램인 MS Project를 이용하여 부품개발 프로젝트의 일정 수립과 CCPM 기법을 적용한 CCPM+라는 상용 프로그램을 통한 일정 수립을 해보고자 한다. 마지막으로 두 기법의 일정과 자원제약에 대한 비교 분석을 통하여 자동차 부품 개발 프로젝트에 적합한 일정수립 방안에 대하여 고찰하고자 한다.

根源聲符를 활용한 漢字指導法은 부수중심 지도법과 그 원리가 같다. 根源聲符를 공유한 형성자들을 系聯하여 指導하는 것이기 때문에 字形과 字音을 쉽게 익혀 연상작용, 이해력, 把持力을 높일 수 있다. 단점은 意義정보의 학습에 취약 하다는 것이다. 丰을 根源聲符로 한 형성자를 層次的으로 系聯하면 1次形聲字는 夆, 奉, 邦, 蚌, 등이, 2次形聲字는 逢, 峯, 莑, 綁, 捧, 封등이, 3次形聲字는 熢, 蓬, 樥, 葑등이, 4차형성자는 鑝이 있다. 各을 근원성부로 한 형성자는 근원성부의 字形 이 변형되지 않고 매우 안정적이다. 어느 字符에 參構하던 자형 ‘各’을 유지하였 다. 하지만 字音은 가, 각, 객, 격, 낙, 락, 략, 액, 학, 맥 등으로 다양하게 분화되었 다. 1차 형성자는 恪, 閣, 客, 格, 洛, 略, 頟, 狢, 貉이, 2차 형성자는 櫊, 髂, 楁, 愘, 喀, 落, 撂, 額등이 있다. 根源聲符를 활용한 漢字指導를 위하여 교육용 기초한자 1,800자만이라도 字源 이 규명되고, 同聲符의 형성자들이 系聯되어 漢字指導의 기초자료로 활용되기를 기대한다. 아울러 字典이 部首에 의해 編纂되었듯이, 이들 연구가 축적되어 聲符辭典이 만들어지기를 기대한다.

Recent high efficiency electronic devices have been found to have heat emission problems. As for LEDs, an excessive increase in the device temperature causes a drop of the luminous efficiency and circuit lifetime. Therefore, heat release in the limited space of such electronic parts is very important. This is a study of the possibility of using a coating of carbon materials as a solution for the thermal emission problem of electronic devices. Powdered carbon materials, cokes, carbon blacks, amorphous graphite, and natural flakes were coated with an organic binder on an aluminum sheet and the subsequent thermal emissivity was measured with an FT-IR spectrometer and was found to be in the range of 5~20 μm at 50˚C. The emissivity of the carbon materials coated on the aluminum sheet was shown to be over 0.8 and varied according to carbon type. The maximum thermal emissivity on the carbon black coated-aluminum surface was shown to be 0.877. The emissivity of the anodized aluminum sheets that were used as heat releasing materials of the electronic parts was reported to be in the range of 0.7~0.8. Therefore, the use of a coating of carbon material can be a potential solution that facillitates heat dissipation for electronic parts.

Gas turbines generating power operate in high temperature condition and use natural gas as fuel. For that reason, there are many cases where damage is done to the hot gas parts caused by the high temperature and many accidents occur like gas explosions, then various efforts are needed to maintain the hot gas parts and prevent accidents. It is difficult to find the root causes of damage to the hot gas parts from the gas explosion caused by gas leakage through rotor cooling air line from fuel gas heat exchanger during the shut down. To prevent gas turbine from damage, removal of gas leakage inside of gas turbine is required by purging the turbine before firing, improving the fuel gas heating system and installing alarm systems for detecting gas leakage from stop valve to turbine while the gas turbine has shut down.

The purpose of this study was to investigate the performance and quality of engine mounting member in repair parts of the accident vehicles by conducting mechanical and material properties experiments. The tests were conducted by the test equipments of chemical components analysis, radiographs and mechanical testing on the genuine parts and non-genuine parts of engine mounting member. Test results concluded; Tensile strength of genuine parts is about 270 N/㎟ but damaged non-genuine parts about 200 N/㎟. The chemical component of 12 components was similar genuine part to non-genuine parts but Ti, Ni component were appeared different. Non-genuine parts were 4 times in elongation, 2 times in hardness higher than genuine parts. We concluded that quality identification system of repair parts and circulation system establishment of repair parts market were needed.

The supplier selection problem is perhaps the most important component of the purchasing function. Some of the common and influential criteria in the selection of a supplier include quality, price, delivery, and service. These evaluation criteria often co

39 accessions of sickle alfalfa (Medicago falcata L.) collected from different regions of China were evaluated for their tolerance to drought. Differences were observed among accessions in their reactions to drought and 8 good tolerant accessions at populations level and 18 excellent tolerant accessions at individual level were identified based on drought response index (DRI).

화태도 연안의 식물플랑크톤 변동 특성을 파악하기 위한 조사는 화태도 북부해역 1개 정점을 대상으로, 2005년 6월부터 2006년 6월까지 고수온기(≥20℃)에는 주1회, 저수온기 (≤20℃)에는 격주로 실시하였다. 화태도 북부해역에서 출현한 식물플랑크톤은 총 77속 214종이 출현하였으며, 출현종수는 최저 27종(2006년 3월 15일)에서 최대 121종(2005년 8월 16일)으로 연중 출현종수의

The use of the gas turbine for power supply is increasing recently. Accordingly, the operation and maintenance cost of the gas turbine is gradually increasing and the various efforts to cut the cost are needed. For an operation and maintenance cost saving of the gas turbine, reductions of the new purchasing charge and the reproduction repair cost of the hot gas parts are required through more effective operation and life management methods for the hot gas parts. The hot gas parts are the main parts of the gas turbine and they are replaced with the periodic. In this research, efficient operation and life management methods for the hot gas parts were presented with the cases. The methods were analyzed and verified based on real data and the cases for improving a lifetime were utilized in the field.

우리나라 학자들이 서구 어학 이론으로 漢文의 語學的특성을 구명하기 시작한 것은 1908년 元泳義의 初等作文法을 시작으로, 1916년에 辛在英이 漢文義讀自解를, 1917년에는 姜邁가 漢文法提要를, 1921년에는 永昌書館에서 實地應用作文大方등이 발간된 후 약 40 년간 공백기를 두고 1960년대와 1970년대 사이에 발간된 문법서는 1960년 丁南洙의 漢文解釋을 시작으로 1971년 6월 許世旭의 漢文通論, 7월 權重求의 漢文大綱, 1973년 文璇奎의 漢文敎疑書, 1975년 趙鍾業의 漢文通釋, 1976년 洪寅杓의 漢文文法, 1977년 박지홍의 표준 漢文法등이 발간되었다. 본고는 1975년 趙鍾業의 漢文通釋의 문법이론 분석에 이어서 1976년 洪寅杓의 漢文文法에 수록된 品詞理論을 분석하려 한다. 특히 초기에 간행된 한문 문법서의 문법 이론이 40년간의 공백기를 거친 후 다시 발간된 한문 문법서에 어 떻게 수용․변모 되었는가 파악할 수 있을 것이고, 이후 발행된 한문 문법서에는 어떻게 반영되었는가도 거론될 것이다. 漢文文法에서는 단어의 종류를 單詞와 複詞로 나누었는데 크게 5 가지로 나누어 설명하고 있다. ‘詞의 種類’에서는 音節數에 의해 분류되는 ‘衍聲複詞’와 두 개의 품사가 연결되어 단어를 형성하는 合意複詞로 분석될 것이다. ‘品詞의 分類’ 에서는 實辭와 虛辭의 종류와 개념을 설명하고, ‘品詞의 結合’에서는 聯合關係, 組合關係, 結合關係등이 서구 이론의 입장에서 분석될 것이다. 저자는 ‘品詞의 等級’에서 甲級, 乙級, 丙級으로 나누었는데 이는 어떤 품사가 주로 문장의 성분 으로 쓰이는가를 논한 것이다. ‘品詞의 活用’은 品詞의 轉成을 설명한 것으로 제 시된 예문을 통해 統辭的機能에 의해 품사가 변하는 것과 造語的側面에서의 품사가 변하는 것으로 분석될 것이다.

Servicizing is defined 'not as to sell the products but as to sell the functions'. This study was done on the methods for revitalization as the object items of navigation & antenna among car parts. The direct door-to-door survey was done for 101 enterprises (direct-management stores) and percentage & t-test were done for statistics. The results can be summarized like followings. First, PR on servicizing is required. Second the optimized methods can be obtained by incorporating reuse & recycling distribution systems of servicizing with the existing recovery system Reuse distribution system can be constructed rationally because inventory control is being done correct1y with the periodic recovery. Finally, as for the analysis on the relative importance of main factors of servicizing, it shows that supports & providing the concrete frame of the government & local autonomous body are important.

There are many types of reduction drives for industrial uses. However, it is essential to use precision reduction drives for accuracy of position controls on robot systems. Among the precision reduction drives, the cycloid reduction drive is well known for its high performances and widely used in precision industrial field. Cycloid reduction drives are mainly used in manipulators in robot system requiring a characteristic of a high precision control. When we design this cycloid reduction drive, there are many factors that must be considered. First, a geometrical analysis of a tooth shape must be drawn from the basic concept. Secondly, load distribution, stress distribution and sliding velocity on a tooth should be calculated exactly. Finally, a computer software to optimize the design of a cycloid tooth needs developing. In this study, many different kinds of factors concerning the characteristic of a cycloid tooth were researched on the basis of the analysis of load, stress and sliding velocity on a tooth. The computer expert system to design the cycloid reduction drive was developed using a Visual C++ compiler. In conclusion, the most important factors can be obtained easily as the user put the simple input data.

알루미늄 분말야금부품은 철계 분말부품에 비해 가볍고 알루미늄 주조부품에 비해 우수한 기계적 물성을 갖는다. 단, 상대적으로 비싼 가격이 이 부품의 응용을 제약하는 장벽이었으나 최근의 환경과 에너지 문제에 대한 세계적인 관심은 이를 극복할 수 있는 계기를 제공하고 있다. 선진국은 이미 일본을 중심으로 1990년대부터 알루미늄 분말부품에 대한 기술개발을 진행하였고 현재는 다양한 상용 부품을 판매하고 있으며 조만간 그 판매량이 크게 증가할 것으로 예상된다.