• 제목/요약/키워드: Main component

검색결과 2,144건 처리시간 0.029초

Effect of methyl alcohol on the morphology and conformational characteristics of silk sericin

  • Lee Gwang Gil;Gwon Hae Yong;Yeo Ju Hong;U Sun Ok;Lee Yong U;Kim Gi Ho;Jo Jong Su;Park Yeong Hwan
    • 한국잠사학회:학술대회논문집
    • /
    • 한국잠사학회 2003년도 제46회 춘계 학술연구 발표회
    • /
    • pp.59-59
    • /
    • 2003
  • Silk sericin (SS) is one of essential components of cocoon filament, comprising granular and high molecular proteins with adhesive and gelatin-like characteristics. Silk fibroin (SF), another main component of cocoon filament, has been investigated by many researchers due to its good physicochenucal properties. Recently, Nam and Park reported that the effect of alcohol addition into the SF solution on the morphology and structural charateristics of SF. (omitted)

  • PDF

A System Analysis and Simulation of the Korean Dairy Industry Sector -Milk Supply Component-

  • Lee, Buk-Won
    • 한국경영과학회지
    • /
    • 제4권1호
    • /
    • pp.87-102
    • /
    • 1979
  • In Korea, the traditional main food is rice There is a shortage of food, though the land is uesd intensively. The Koreans produce mainly rice its yield is very much higher than other crops. This leads to the comsumption of one type of food and, hence, to an unbalanced diet. Since 1962, Korean income has been going up rapidly, and the demand for animal protein has also increased. In order to solve the probem, the government decided to develop the dairy industry, because this would enable the population to consume more animal protein, and there is weak competion between rice and milk production.

  • PDF

그루브 압축이 알루미늄 집합조직에 미치는 영향 (Effect of Groove Pressing on Deformation Texture in Aluminum)

  • 김영석;박종진
    • 소성∙가공
    • /
    • 제9권4호
    • /
    • pp.421-427
    • /
    • 2000
  • The present study has focused on the development of shear textures during groove pressing in an aluminum alloy sheet. The shear components 23 and 13 developed during the groove pressing process. The process consisting of two steps of grooving and flattening each effectively gave rise to a high shear deformation In the sheet without reduction in thickness. The main texture component obtained from the process was the rotated Bs-orientation. The evolution of shear components during the groove pressing caused an increase in R-value of aluminum sheet comparing to a normally processed rolled sheet.

  • PDF

Recent Progress in Layer-by-layer Assembly of Nanomaterials for Electrochemical Energy Storage Applications

  • Kim, Sung Yeol
    • 전기화학회지
    • /
    • 제17권3호
    • /
    • pp.139-148
    • /
    • 2014
  • Electrochemical energy-storage devices such as batteries and supercapacitors are important components in emerging portable electronic device, electric vehicle, and clean energy storage and supply technologies. This review describes recent progress in the development of nanostructured electrodes, the main component of the electrochemical energy-storage device, prepared by layer-by-layer (LbL) electrostatic assembly. Major advantages associated with, and challenges to, the fabrication of LbL electrodes, as well as the future outlook for expanding the application of LbL techniques, are discussed.

Glucolipid from Phytolacca esculenta

  • Woo, Won-Sick;Kang, Sam-Sik
    • 약학회지
    • /
    • 제18권3호
    • /
    • pp.203-208
    • /
    • 1974
  • An acylated steryl glucoside preparation has been isolated from Phytolacca esculenta $_{VAN}H_{OUTTE}$. Two componentsof the vsterol moiety are ${\alpha}$-spinasterol and ${\delta}^7$-stigmastenol. Fatty acids are palmitic, stearic and myristic acids, and are located on C-6 of the glucose portion. 6'-Palmityl-${\alpha}$-spinasteryl-${\beta}$-glucoside is the main component.

  • PDF

구절초에서 분리한 linarin의 생리활성 (Biological Activities of Linarin from Chrysanthemum zawadskii var. latilobum)

  • 김영윤;이숙연;임동술
    • 약학회지
    • /
    • 제45권6호
    • /
    • pp.604-610
    • /
    • 2001
  • Chrysanthemum zawadskii var. latilobum (Compositae), which is called Gu-Jul-Cho, has been used as traditional medicine in pneumonia, bronchitis, common cold, pharyngitis, bladder-related disorders, women's diseases, and hypertension, etc. In this study we have investigated various biological activities of methanol extracts and their main component, linarin isolated from this herb. The antipyretic effect of them was tested by Brewers yeast method and the antiinflammatory activities, with arachidonic acid, o-tet-radecanoylphorbol 13-acetate and carrageenan. Their antipyretic and antiinflammatory activities were more potent than acetaminophene and aspirin. They also showed stronger hepatoprotective activities than ones of silymarin in mice.

  • PDF

다목적실용위성 2호기의 통신 부호화기 구현 (Implementation of Communication Unit for KOMPSAT-II)

  • 이상택;이종태;이상규
    • 대한전자공학회:학술대회논문집
    • /
    • 대한전자공학회 2003년도 통신소사이어티 추계학술대회논문집
    • /
    • pp.378-381
    • /
    • 2003
  • The Channel Coding Unit (CCU) is an integral component of Payload Data Transmission System (PDTS) for the Multi-Spectral Camera (MSC) data. The main function of the CCU is channel coding and encryption. CCU has two channels (I & Q) for data processing. The input of CCU is the output of DCSU (Data Compression & Storage Unit). The output of CCU is the input of QTX which modulate data for RF communication. In this paper, there are the overview, short H/W description and operation concept of CCU.

  • PDF

CATV회선을 이용한 배전용 변압기 부하의 원격감시시스템 개발 (The Development of Distribution Transformer Remote Monitoring System using CATV Cable)

  • 박창호
    • 대한전기학회:학술대회논문집
    • /
    • 대한전기학회 1998년도 하계학술대회 논문집 C
    • /
    • pp.939-942
    • /
    • 1998
  • This paper presents the process on the construction for the remote distribution pole transformer monitoring system. Especially, this system uses CATV cable as communication media which is located in KEPCO's main distribution line. It has four major components such as sensor for measuring secondary voltage and currents of distribution transformer, RF modem for data modulating/de-modulating, communication media for sending/receiving of data, and pc server for monitoring the results of sensing or computing information. This paper also describes the configuration of these each component's configuration and its functions.

  • PDF

Expansion of Limited Applicability of Water and River Management Technologies

  • Yoshitani, Junichi
    • 한국수자원학회:학술대회논문집
    • /
    • 한국수자원학회 2010년도 학술발표회
    • /
    • pp.122-126
    • /
    • 2010
  • This paper elaborates on difficulties when ones tried to apply domestically developed technology to other countries from both technical and sociological aspects. Next, the author proposes possible solutions to expand the applicability of domestic technology. The main one is breaking down a technology to smaller components so that anybody can clarify the applicability of each component. The author presents an example of this methodology to flood hazard mapping.

  • PDF

부하변동에 강인한 유도전동기 속도제어 (Robust Speed Control of Induction Motor Using Load Torque Observer)

  • 박래관;현동석
    • 대한전기학회:학술대회논문집
    • /
    • 대한전기학회 1993년도 하계학술대회 논문집 B
    • /
    • pp.686-688
    • /
    • 1993
  • This paper proposes a robust speed control algorithm of Induction Motor. The main idea of this paper is to compensate the torque component of motor current with load torque observer and feedforward control. The speed response of the conventional PI controller is affected by variation of system parameters. However the proposed system has robust characteristics against the variation of system parameters. The simulation results and experiment prove the validity of proposed algorithm.

  • PDF