• 제목/요약/키워드: Volumes

검색결과 2,594건 처리시간 0.032초

Role of Electron Acceptor-donor on Elemental Mercury Removal Using Nano-silver-plated Activated Carbons Complexes

  • Lee, Hyo In;Yim, Yoon-Ji;Bae, Kyong-Min;Park, Soo-Jin
    • Composites Research
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    • 제31권2호
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    • pp.76-81
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    • 2018
  • In this study, the elemental mercury removal behaviors of silver-plated porous carbons materials were investigated. The pore structures and total pore volumes of the hybrid materials were analyzed by $N_2$ adsorption/desorption analysis at 77 K. The pore structures and surface morphologies of the hybrid materials were characterized by XRD and SEM, respectively. The elemental mercury adsorption capacities of all silver-plated porous carbons hybrid materials were higher than those of the as-received samples, despite the fact that the specific surface areas and total pore volumes decreased with increasing metal loading time. It was found that silver nanoparticles showed excellent elemental mercury removal behaviors in carbonaceous hybrid materials.

VM 열펌프의 3차해석 (A Third-order analysis of VM heat pumps)

  • 강영구;정은수
    • 설비공학논문집
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    • 제9권2호
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    • pp.229-238
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    • 1997
  • A third-order simulation model of VM heat pumps has been developed. This model allows consideration of the major losses such as heat conduction losses through regenerators and displacers, pumping losses and wall-to-gas heat transfer losses in working volumes, in addition to the heat exchanger and regenerator losses. The working volume was divided into 12 control volumes and conservation equations of mass and energy were applied to each control volume. Pressure drop was considered in regenerators only. Thermodynamic behavior of working fluid in a VM heat pump was investigated and effects of major losses on the performance of a VM heat pump were shown.

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자일리톨 첨가가 식빵의 특성에 미치는 영향 (Effect of Xylitol on Bread Properties)

  • 이수정;백재은;한명륜
    • 한국식품영양학회지
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    • 제21권1호
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    • pp.56-63
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    • 2008
  • This study investigated the quality characteristics of breads manufactured with xylito1. Four different concentrations(0, 5, 7, and 10%) of xylitol were added to the bread-making flour. Volume, color, the visco-elastic properties of the dough, and bread texture were analyzed. The dough volumes of the xylitol treatments during fermentation, as well as the final volumes of the xylitol breads were lower than those of the control dough and bread. Onset temperature slightly increased with the xylitol concentration, but entalphy changed minimally. Finally, the hardness of the bread positively increased with the xylitol concentration.

FMS의 설계 및 운용을 위한 기계 부품 그룹 형성에 관한 연구 (Machine-part group formation for FMS planning and operation)

  • 정성진;박진우;김재윤
    • 경영과학
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    • 제4권
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    • pp.76-83
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    • 1987
  • The machine-part group formation(MPGF) problem arises frequently in FMS planning. By viewing the problem as one of finding good assignments, a powerful solution algorithm is presented. The new algorithm solves the threshold dilemma found in previous solution procedures employing similarity coefficients. It also compared favorably with other existing MPGF algorithms by finding minimum exceptional elements for the tested problems. Furthermore the new algorithm can solve dynamic and more realistic MPGF problems by considering production volumes or costs. Such diverse machine-part relationship values were not considered in previous MPGF studies, which included only 0,1 incidence values. An example problem is solved where production volumes are the elements of MPGF incidence matrix.

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성도 자기공명 영상과 음향정보(F1/F2)를 이용한 한국어 단모음 [이, 에, 아, 오, 우, 으] 판별 (A Vowel Discrimination of Korean Monophthongs [i, e, a, o, u, ${\omega}$] Using Vocal Tract Magnetic Resonance Image and F1/F2)

  • 성철재;박종원;김귀룡
    • 대한음성학회지:말소리
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    • 제56호
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    • pp.103-125
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    • 2005
  • We present a new method of measuring the volume and cross-sectional area of the vocal tract from magnetic resonance images. The vocal tract was divided by the 2 constriction points on the horizontal and vertical planes. The ratios of the volumes of the segment vocal tracts to that of the entire vocal tract play a crucial role in discriminating Korean monophthongs in that vowels were successfully discriminated by the ratios. The discriminant analysis also demonstrated that the acoustic parameters F1 and F2, in addition to the segment volumes, serve as significant parameters in discriminating Korean monophthongs.

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광순환 에너지를 갖는 Halobacterium Halobium에서 마취제의 혼합에 따른 Membrane의 부피 변화 (Volume Change of Membrane Mixed with Various Anesthetics in Halobacterium Halobium with Photo-Cyclic Energy)

  • 김기준;성기천;이후설
    • 한국응용과학기술학회지
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    • 제13권3호
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    • pp.119-125
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    • 1996
  • The excess volumes of mixing of benzyl alcohol, ethyl alcohol, halothane, and procaine in vesicle and suspensions of several lipids have been determined at $25^{\circ}C$ using a excess volume dilatometer. The potency of general anesthetics has long been known to be correlated with lipid solubility. Denaturations of the bacteriorhodopsin, which is a sole membrane protein in the purple membrane of Halobacteriun Halobium, were studied by UV/Vis absorption changes. The excess volumes of mixing of benzyl alcohol and procaine in egg lecithin were all found to be negative and this result was confirmed as Miller's supposition.

An Efficient Collision Queries in Parallel Close Proximity Situations

  • Kim, Dae-Hyun;Choi, Han-Soo;Kim, Yeong-Dong
    • 제어로봇시스템학회:학술대회논문집
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    • 제어로봇시스템학회 2005년도 ICCAS
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    • pp.2402-2406
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    • 2005
  • A collision query determines the intersection between given objects, and is used in computer-aided design and manufacturing, animation and simulation systems, and physically-based modeling. Bounding volume hierarchies are one of the simplest and most widely used data structures for performing collision detection on complex models. In this paper, we present hierarchy of oriented rounded bounding volume for fast proximity queries. Designing hierarchies of new bounding volumes, we use to combine multiple bounding volume types in a single hierarchy. The new bounding volume corresponds to geometric shape composed of a core primitive shape grown outward by some offset such as the Minkowski sum of rectangular box and a sphere shape. In the experiment of parallel close proximity, a number of benchmarks to measure the performance of the new bounding box and compare to that of other bounding volumes.

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한국복식에 나타나는 사회적 상징 연구 - 전통설화를 중심으로 - (A Study on the Social Symbolism of the Korean Dress - Centering around the Traditional Korean Folktale -)

  • 김진구;김애련
    • 복식문화연구
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    • 제13권3호
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    • pp.503-512
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    • 2005
  • This study is to analyze the social symbolism of the dress described in the traditional Korean folktale focusing on the Chosen Dynasty. As references, An outline of the Korean oral literature: 82 volumes in total and written Korean narrative:7 volumes in total written by Kim Hyen Ryong were selected. As regards method of study, first, the social symbolism of the dress described in the traditional folktale has been extracted: afterwards, those were classified and summarized according to theme of a clothing, hairstyle, and belt, etc. And the social symbolism of the dress has been analyzed based on the theory of symbolism. As a result of the analysis, following conclusion has been obtained. First, political relationship and ideology represented through costumes. Second, old customary clothing behaviour represented. Third, sex and age symbolism were represented through protagonists. Fourth, married or unmarried symbolim represented.

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Parallel Fuzzy Inference Method for Large Volumes of Satellite Images

  • Lee, Sang-Gu
    • International Journal of Fuzzy Logic and Intelligent Systems
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    • 제1권1호
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    • pp.119-124
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    • 2001
  • In this pattern recognition on the large volumes of remote sensing satellite images, the inference time is much increased. In the case of the remote sensing data [5] having 4 wavebands, the 778 training patterns are learned. Each land cover pattern is classified by using 159, 900 patterns including the trained patterns. For the fuzzy classification, the 778 fuzzy rules are generated. Each fuzzy rule has 4 fuzzy variables in the condition part. Therefore, high performance parallel fuzzy inference system is needed. In this paper, we propose a novel parallel fuzzy inference system on T3E parallel computer. In this, fuzzy rules are distributed and executed simultaneously. The ONE_To_ALL algorithm is used to broadcast the fuzzy input to the all nodes. The results of the MIN/MAX operations are transferred to the output processor by the ALL_TO_ONE algorithm. By parallel processing of the fuzzy rules, the parallel fuzzy inference algorithm extracts match parallelism and achieves a good speed factor. This system can be used in a large expert system that ha many inference variables in the condition and the consequent part.

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부산항 해상교통 혼잡도 평가에 관하여 (An evaluation of Marine Traffic Congestion in Pusan Port by Simulation Method)

  • 석상문;여기태;이홍걸;이철영
    • 한국항해항만학회:학술대회논문집
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    • 한국항해항만학회 1998년도 추계학술대회논문집:21세기에 대비한 지능형 통합항만관리
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    • pp.323-329
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    • 1998
  • In Pusan port, the studies, which analysis container cargo volumes by using forecasting methods and research about container logistics system, etc., have been continuously performed. But, in Pusan port, this study on an evaluation of traffic congestion has been scarcely performed until now. Especially, when changing and extending a berth, and constructing a new port, it is very important to examine this field. And it should be considered. Thus, this paper aims to analysis the effect of ship traffic condition in 2011, to evaluate marine traffic congestion, according to changing ship traffic volumes in Pusan port. To analysis it, we used simulation method and examined the results

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