• 제목/요약/키워드: system composition

검색결과 3,774건 처리시간 0.033초

무전해 Co-Cu-P 도금속도에 미치는 도금 조건과 표면상태의 영향 (Effect of Plating Condition and Surface on Electroless Co-Cu-P Alloy Plating Rate)

  • 오이식
    • 동력기계공학회지
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    • 제4권2호
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    • pp.31-39
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    • 2000
  • Relationships between the plating condition and the plating rate of the deposition film for the electroless plating of Co-Cu-P alloy were discussed in this report. The result obtained from this experiment were summarized as follow ; The optimum bath composition was consisted of 0.8 ppm thiourea as a stabilizing agent. Composition of the deposit was found to be uniform after two hours of electroless plating. Plating rates of nickel-catalytic surface and zincate-catalytic surface were found to be very closely equal, but the plating time of nickel-catalytic surface took longer than that of the zincated-catalytic surface.

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쓰레기종량제에 따른 쓰레기의 특성 및 발열양 분석 (The Characteristics and Heating Values Analysis of Municipal Solid Wastes according)

  • 문추조;정순형;이태호
    • 환경위생공학
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    • 제10권3호
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    • pp.29-34
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    • 1995
  • This study was on the characteristics and heating values analysis of municipal solid wastes according to the volume- rate garbage collection system in Busan. Each waste sample was analyzed to obtain physical composition, proximate analysis, heating value, chemical composition. And the heating value were compared with those of the past waste collection system. The average physical composition of A.P.T. area was food waste 54.0~65.7% , while that of common residence was food waste 57.9~61.2% . The density of solid waste were largely different for site and the highest densities of waste was $399.6kg/m^{3}$ from Market. The low heating value of waste from residence site was 996.9kca1/kg~1, 238.1 kcal/kg which was lower than 1, 000kcal/kg~1, 800kca1/kg of the past wastes. These difference was mainly due to the difference of moisture content and the amount of vegetables.

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가변구성비 추정기법과 이를 이용한 무효전력 축약모델의 오차보정기법 개발 (Estimation Method of Variable Composition Rate and Error Compensation Method of Aggregative Model for Reactive Power by Variable Composition Rate)

  • 이대종;이종필;임재윤;지평식
    • 전기학회논문지P
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    • 제60권4호
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    • pp.186-192
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    • 2011
  • Recently, due to the expansion of electric power demands, nonlinear load such as converters and inverters connected to the electric power distribution system, and extensive application of harmonic generation sources with power electric devices, disturbance of the electric power system and its influences on industries have been continuously increasing. In this research, we develop a novel aggregation algorithm by considering the harmonics characteristics for residential loads. Using data sets acquired from various experiments, we analyzed load characteristics according to harmonics and presented the results obtained the proposed method.

응급의료시설의 공간구성요소에 관한 건축계획적 연구 (A Study on the Architectural planning of Spatial Organization Feature in Emergency Medical Facilities)

  • 최충호;박재승
    • 의료ㆍ복지 건축 : 한국의료복지건축학회 논문집
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    • 제14권2호
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    • pp.25-34
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    • 2008
  • The purpose of this study was to spatial organization feature and area composition of the over 500beds general hospital that will be expected construct in Seoul, Gyeonggi-do area after 2000year. From this study, we can suggest architectural planning for the efficiency operating of emergency medical facilities that can be used as preliminary data. The Spatial organization of emergency medical facilities are categorize into 4 session as medical examination and treatment, diagonosticradiology, staff, public and the others. We can find spatial organization system and area composition that compare area composition of 6 hospital the subject of research in a emergency medical facilities. The result of this study were as follows : spatial distribution of its field, grasping of spatial organization factor and recognize its merits and demerits should be researched in advance. Through this kind of recognizing emergency system, realistic medical local and condition architectural planning for spatial organization will be operate.

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공간구성에 있어서 전이적 요소의 특성에 관한 연구 -통로와 계단을 중심으로 - (A Study on the Characteristics of Transferred Element in Composition of Architectural Spaces -Focusing on Path and Stairs)

  • 이승우;윤도근
    • 한국실내디자인학회논문집
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    • 제7호
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    • pp.79-86
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    • 1996
  • This study is searching the characteristics of transferred element in composition of architectural spaces ; it is ultimate goal that frame of reference is arranged system about path of horizontal direction is two-dimension and stairs of vertical in three-dimension as transferred element in Architectural plan. With the exception of stylized discussion or rhetorical analysis about these, it is analysed as element in physical order of a whole architecture in relation to another elements in composition of architecture spaces. And one who is perceptible and cognitive through spaces is the subject. Consequently , these elements are classified concept of location and circulation. And it can't think that the formal is divided the latter for accept behavior of pedestrican and thinking system to consider verticality and time property is absolutely conceptual elements in space of architectural plan.

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Spinel Ferrite에 관한 연구 (I) Mn-Zn계 Ferrite의 자기특성에 대한 희토류산화물의 첨가효과 (Studies on Spinel Ferrites (I) Effects of Addition of Rare-Earth Oxides on the Magnetic Properties of Mn-Zn Ferrites)

  • 김태옥
    • 한국세라믹학회지
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    • 제14권2호
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    • pp.78-81
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    • 1977
  • The effects of variation in composition and the addition of small amount of the rare-earth oxides La2O3, CeO2 and Sm2O3 on the magnetic properties of Mn-Zn system ferrites, 0.5MnO.0.5ZnO.(1+0.1X) Fe2O3(X=-1, 0, 1, 2), were investigated in the range of frequencies of 0.1~100 kHz. It was shown that the magnetic permeability of the specimens with the composition Mn 0.5 Zn 0.5 Fe2O4 was maximum in the Mn-Zn system ferrites, and that the addition of a small amount of the rare-earth oxides to the composition 0.5 MnO.0.5ZnO.0.9 Fe2O3 caused the sharp increase of magnetic permeability and the decrease of the loss factors.

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합성 TOE에 대한 평가범위 분석에 관한연구 (Research about Evaluation Scoping Analysis for Composition TOE)

  • 김석수
    • 융합보안논문지
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    • 제7권3호
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    • pp.45-50
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    • 2007
  • 침입차단시스템 및 침입탐지시스템 등의 정보보호제품에 대한 안전성과 관련하여 좀더 강화를 목적으로 한 합성정보보호제품의 경우 인터페이스에서의 취약성과 안전성의 정도 및 개발기간과 개발비용의 정도가 고려시 되고 있는데, 본 논문에서는 이러한 합성 TOE의 대한 평가범위분석을 ISO/IEC TR 19791을 기준으로 함으로써 각 도메인의 범위를 파악하기에 충분하였다. 합성 ST의 보안환경과 보안목적 작성시 보안정책 수립 측면에서 큰 도움이 될 수 있다고 생각한다.

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가미방풍통성산(加味防風通聖散)이 고지방식이 급여 흰쥐의 체지질구성과 항산화능에 미치는 영향 (Effects of Gamibangpungtongseungsan on lipid composition and antioxidant in rat fed high fat)

  • 이장천
    • 대한본초학회지
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    • 제20권2호
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    • pp.69-75
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    • 2005
  • Objective : Effects of Gamibangpungtongseungsan on lipid composition and antioxidant system were investigated in rat fed high fat diet. Methods : We fed control group rats high fat diet and administered normal saline for 8 weeks, and experimental group rats high fat diet and administered extract of Gamibangpungtongseungsan for 8 weeks. Results : Body weight gain, concentration of plasma triglyceride, total cholesterol, LDL-cholesterol showed a tendency to decrease in Gamibangpungtongseungsan groups. However, the concentration of LDL-cholesterol showed a tendency to increase in Gamibangpungtongseungsan groups. Plasma and liver TBARS concentration showed a low values in Gamibangpungtongseungsan groups. Activities of SOD, GSH-Px and CAT showed a tendency to increase in Gamibangpungtongseungsan groups. Conclusions : These results indicate that Gamibangpungtongseungsan has a deep inhibitory effect on lipid composition and antioxidant system.

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NiW 기능성 합금도금을 위한 전해 (Electrolysis for NiW Functional Alloy Plating)

  • 정구진;이철경
    • 한국표면공학회지
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    • 제44권1호
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    • pp.1-6
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    • 2011
  • A NiW functional alloy plating was investigated as variables of metal ion concentration, complexing agent, temperature, pH and applied current density. Even if numerous studies on reaction mechanism of NiW induced codeposition were carried out during couples of decade, it has not been acceptable reaction mechanism. This study was focused on the effect of the plating variables on the alloy composition in the NiW alloy plating. Applied current density could control mainly the alloy composition rather than other plating variables. It has also been confirmed that the functional alloy plating such as layered or gradient plating was possible by controlling applied current density.

미디어 아트를 활용한 멀티미디어 컨텐츠 제작 (The production of multimedia contents for using by the media arts)

  • 조재영;송학현;김태곤;김윤호
    • 한국정보통신학회:학술대회논문집
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    • 한국해양정보통신학회 2002년도 추계종합학술대회
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    • pp.356-360
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    • 2002
  • 본 연구에서는 S/W 기반 음악작곡법과 작곡된 음악을 기반으로 한 동영상 편집기술에 대해 기술하였다. 이번 컨텐츠의 결과물은 미디로 작곡된 음악에 동영상관련 S/W를 활용한 동영상을 조합한 것으로, 누구나가 쉽게 접근할 수 있는 컴퓨터음악 작곡과 영상편집에 대한 배양이 주제이자 목표이다.

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