• 제목/요약/키워드: resultant

검색결과 2,042건 처리시간 0.072초

Cellulose-EVOH 섬유의 제조와 물성에 관한 연구 (A Study on the Preparation and Properties of Cellulose-EVOH Fibers)

  • 문병화;임상규;손태원;김삼수
    • 한국염색가공학회지
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    • 제10권5호
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    • pp.19-23
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    • 1998
  • In this study, Cellulose-Poly(Ethylene-Co-Vinyl Alcohol) (EVOH) fibers from MMNO(N-me-thylmorpholine-N-oxide) /water/cellulose/EVOH were prepared according to changes of EVOH content(wt%), which is main factors to dry-jet wet spinning. The mechanical properties and morphology of produced fibers were investigated. The resultant fibers had tensile strength of 3.7∼4.5g/d, elongation of 3.3∼7.5% and exhibited lower density than the density of pure cellulose fiber.

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플랫 플레이트 내부 접합부의 강도산정모델 (Strength Prediction Model for Flat Plate-Column Connections)

  • 최경규;박홍근;안귀용
    • 한국콘크리트학회:학술대회논문집
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    • 한국콘크리트학회 2002년도 봄 학술발표회 논문집
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    • pp.897-902
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    • 2002
  • The failure of flat plate connection is successive failure process accompanying with stress redistribution, hence it is necessary to compute the contributions of each resistance components at ultimate state. In the present study, the interactions of resultant forces at each faces of connection, i.e. shear, bending moment and torsional moment are considered in the assessment of strength of slab. As a result the strength prediction model for connection is made up as combination of bending resistance, shear resistance and torsional resistance. The proposed method is verified by the experimental data and numerical data of continuous slabs.

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다리우스 풍차의 회전각에 따른 순간 토오크 해석 (A Instantaneous Torque Analysis of the Darrieus Wind Turbine varying with the rotating Angle of blade)

  • 오철수;권순홍
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 1992년도 하계학술대회 논문집 B
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    • pp.659-661
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    • 1992
  • This paper deals with aerodynamic problems of the rotating blade of Darrieus wind turbine and its instantaneous torque. The instantaneous torque varying with the rotating angle of blade was obtained through resultant wind velocity, angle of attack, lift and drag coefficient. These are obtained from a given wing section, size and wind velocity.

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엔드밀 공정에서 공구 동력계를 이용한 절삭상태 감시 (Cutting Process Monitoring Using Tool Dynamometer in End-Milling Process)

  • 김홍겸;양호석;이건복
    • 한국공작기계학회:학술대회논문집
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    • 한국공작기계학회 2001년도 추계학술대회(한국공작기계학회)
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    • pp.14-18
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    • 2001
  • Rise in cutting force causes tool damage and worsens product quality resulting in machining accuracy deterioration. Especially, fragile material cutting brings about breakage of material and worsens product surface quality. In this study, we trace the locus of cutting force and examine the machined surface corresponding to the cutting force loci. and build up a monitoring system for deciding normal operation or not of cutting process.

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Fault Tolerant Control of Magnetic Bearings

  • Na Uhn-Joo
    • 한국소음진동공학회:학술대회논문집
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    • 한국소음진동공학회 2002년도 추계학술대회논문집
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    • pp.388-392
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    • 2002
  • Fault tolerant control algorithm for heteropolar magnetic bearings are presented. This fault tolerant control utilizes grouping of currents as C-cores in order to isolate magnetic fluxes. Hardware requirements to maintain fault tolerant control are reduced since decoupling chokes are not required in this control scheme. The currents supplied to each pole are redistributed, if some coils fail suddenly, such that the resultant magnetic forces should remain invariant through coil failure events. Load capacity before magnetic saturation is reduced through coil failures while maintaining the same magnetic forces before and after failure.

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An Improved and Efficient Method for Cosmid Cloning

  • Lee, Baek-Rak
    • Journal of Microbiology and Biotechnology
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    • 제4권3호
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    • pp.233-234
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    • 1994
  • A general improved procedure for preparation of a cosmid library based on the use of a pBLcosT vectorwas described. The vector was modified to contain 2 tandem Xcml sites and was digested with Xcml to yield 2 terminal 3 T overhangs, capable of ligation with the insert that contains 2 terminal complementary 3 A overhangs. The resultant ligation mixture was packaged and a cosmid library in Escherichia coli was established.

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단일광자방출 전산화단층촬영상에서 재구성 필터에 의한 정량화 오차에 관한 연구 (A Study on the Quantification Error due to the Reconstruction Filters in Single Photon Emission Computed Tomography(SPECT))

  • 곽철은;정준기
    • 대한의용생체공학회:의공학회지
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    • 제12권1호
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    • pp.43-48
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    • 1991
  • As the computerized methods and equipments In nuclear medicine imaging increases, quantitative information is needed on the single photon emission computed tomographic Images as well as on the conventional nuclear medicine images. In this paper, the authors investigated the effect of several clinician - friendly reconstrution filters on the resultant transverse slices of backprojected Profiles of radioisotope distribution from the Quantitative point of view, and reduced the filter parameters such as cutoff frequency and order of filter which are neces mary to minimize the quantification error using computer-generated phantoms.

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병원 종합관리 시스템

  • 조규달
    • 대한의용생체공학회:의공학회지
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    • 제3권1호
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    • pp.51-54
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    • 1982
  • As the computerized methods and equipments in nuclear medicine imaging increases, quantitative information is needed on the single photon emission computed tomographic images as well as on the conventional nuclear medicine images. In this paper, the authors investigated the effect of several clinician - friendly reconstrution filters on the resultant transverse slices of backprojected profiles of radioisotope distribution from the quantitative point of view, and reduced the filter Parameters such as cutoff frequency and order of filter which are necessary to minimize the quantification error using computer -generated phantoms.

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유한요소모형을 이용한 방조제 건설 전후의 조성특성변화 예측 (Prediction of the Variation of Tidal Characteristics due to the Construction of Seadike Using Finite Element Model)

  • 박영욱;구요한;김진식;권순국
    • 한국관개배수논문집
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    • 제4권1호
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    • pp.22-33
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    • 1997
  • Seadike construction in order to develope the tidal land is used to significantly affect the water circulation system not only resulting in changes of coastal geometry but causing environmental problems. Therefore it is necessary that resultant effects of

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