• Korea Petroleum Association Journal
• /
• no.12 s.142
• /
• pp.56-59
• /
• 1992

1964년 민간자본으로 설립된 극동정유는 그 모태가 되는 윤활기유 중심의 극동정유공업(주)에서 태동하여 많은 도전과 응전 속에서 발전을 거듭하여 오늘에 이르렀다. 꾸준한 발전속에서 성장을 모색해온 극동정유는 1988년 11월 충남 서산에 6만B/D 규모의 상압정제시설을, 다음해인 1989년11월 3만 4천 B/D 규모의 중질유 분해시설을 갖춘 최첨단 정유공장을 신설하여 서해안시대와 경질유시대의 서막을 열었다. 1992년 11월 19일 창사 28주년을 맞아 극동의 약사를 조명해본다.

• Culinary science and hospitality research
• /
• v.7 no.1
• /
• pp.35-56
• /
• 2001

The purpose of this study is to found out that how well yield management, the element of Marketing mix possible to control, is composed and is conducted in strategic level in Italian Restaurant of domestic Hotel and that how much menu which is the element of Yield management contributes to growth of sales. As a result of this research, it is found out that all of three hotels have a different characteristic promotion hold by 10% in F/B. By that reason, out saucing is need to hotel management, but Restaurant should be activated continuously.

• The Journal of the Acoustical Society of Korea
• /
• v.5 no.3
• /
• pp.44-49
• /
• 1986

회로의 간편성에 최대 역점을 두어 PLL을 이용한 정현파 간섭음을 실시간으로 제거하는 방식을 제안하였다. SC 여파기를 이용한 적응 노치 여파기ㅘ 적응 대역 여파기를 자기 동조법으로 구동시킴으 로써 간섭음을 제거하였다. SC 여파기의 구동 스위칭 주파수는 제거하려는 신호 주파수으 L49배가 되 도록 하엿으며 소자의 동작 특성상 4KHz의 간섭음 제거 대역을 갖게 된다. 노치 여파기는 6차 여파기 이고 감쇄도는 중심 주파수에서 약 -56dB이다.

• Proceedings of the Ginseng society Conference
• /
• 1993.09a
• /
• pp.52-56
• /
• 1993

• Journal of Embryo Transfer
• /
• v.3 no.1
• /
• pp.31-37
• /
• 1988

This study was carried out to produce the antisera for the blood typing in cattle. Blood types of eighty cattle were previously determined by 56 kinds of internationally standardized antisera from Japan. The donorrecipient animal arrangements were determined according to tile previously determined blood types of animals by the computer program SS-l for efficient production of antisera. Six kinds of standard antisera, H,B', 12, C2, Z, U2, were produced by isoimmunirzation and absorption methods.

• Proceedings of the KIEE Conference
• /
• 2004.11d
• /
• pp.56-58
• /
• 2004

본 논문은 UHF센서를 개발하는데 있어, 개발 완료 후 양산시에 필요한 시험항목을 선정하고, 시험항목에 따른 시험을 실시하여, 센서의 성능 및 신뢰성을 입증하고 있다.

• Journal of Korean Institute of Industrial Engineers
• /
• v.11 no.2
• /
• pp.47-56
• /
• 1985

This paper considers a two-product three-facility production planning model, where facility 1 produces product 1 to satisfy its own market requirements and supplies input to facility 2, and facility 2 requires another input from facility 3 (outside supplier). The objective is to determine the optimal production amount in each period in order to satisfy the dynamic demands on time, which minimizes the total cost of production and storage. The set-up cost is incurred jointly from the multi-facility operations.

• The Pure and Applied Mathematics
• /
• v.10 no.1
• /
• pp.49-56
• /
• 2003

For (equation omitted) be an ordered $\ell$(t)-tuple of numbers in｛1,2, …,$\ell$｝and let Tt be chosen from a finite composition of orthogonal projections (equation omitted) acting on the normed linear space $C_1$(X) to closed convex subset $S(fi_{j}\;^{t})$ respectively. In this paper, we study the convergence of the sequence (equation omitted) where (equation omitted).

• Korean Journal of Microbiology
• /
• v.13 no.2
• /
• pp.71-80
• /
• 1975

The neurotoxin of Clostridium botulinum type B was purified from a liquid culture. The purification steps consist of ammonium sulfate precipitation of whole culture, treatment of Polymin P(0.15%, v/v), gel filtration on Sephadex G-100 at pH5.6 and DEAE-Sephadex charomatography at pH8.0. The procedure recovered 17% of the toxin assayed in the starting culture. The toxin was homogeneous by sodium dodecyl sulfate(SDS)-polyacrylamide gel electrophoresis and had a molecular weight of 163,000. Subunits of 106,000 and 56,000 molecular weight were found when purified toxin was treated with a disulfide-reducing agent and electro phoresed on SDS-polyacrylamide gels.

• Journal of the Korean Institute of Telematics and Electronics
• /
• v.6 no.1
• /
• pp.54-56
• /
• 1969

무손실 주기구조에 의한 단대역의 제거와 영, π모드에 대한 공류현상에 대하여 기술하였다. 특수한 2개의 구조내의 2개의 통과모드가 공류점에서 영이 아닌 군속도를 가질 수 있음이 해석에 의하여 알려졌으며 이 공류현상은 모드분리를 뚜렷이 하기 때문에 선형가속기로서 유용하다.