• Title/Summary/Keyword: Candle

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Outbreaks of Strangles due to Capnophilic Streptococcus equi subsp equi in South Korea (호이산화탄소성 Streptococcus equi subspecies equi에 의한 선역의 발생)

  • Moon, Ja-Ho;Kim, Jeong-Hee;Takai, Shinji;Son, Won-Geun
    • Journal of Veterinary Clinics
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    • v.32 no.1
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    • pp.41-44
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    • 2015
  • We reported an outbreak of clinical strangles in thoroughbred horses due to capnophilic Streptococcus equi subsp equi in South Korea. On three different farms, we isolated 17 S equi subsp equi isolates from 29 horses with or without abscesses in their lymph nodes. Of the 17 isolates, two isolates from clinical cases grew well in aerobic conditions, whereas 7/7 isolates from clinical cases and 8/22 isolates from the nasal discharges of horses did not. The latter 15 isolates were capnophilic, oxygen-sensitive, and $CO_2$-requiring S equi subsp equi, which could not grow in aerobic conditions, but which grew well in a $CO_2$ incubator with 5% $CO_2$, in anaerobic conditions using a GasPak, and with reduced oxygen tension in a candle jar. This study is the first report of a strangles outbreak caused by capnophilic S equi subsp equi in South Korea.

Comparison of Particle Loading Characteristics onto Ceramic Candle Filters in Filtration System at Different Gas Inflow Pattern (가스 유입 방식에 따른 집진장치 내에서의 세라믹 캔들 필터로의 입자 부하 특성 비교)

  • Park, Seok-Joo;Lim, Jeong-Hwan;Lim, Kyeong-Soo
    • Korean Chemical Engineering Research
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    • v.46 no.5
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    • pp.983-987
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    • 2008
  • Computational simulation has been performed to design optimally the filtration system for IGCC pilot plant. It was analyzed how the different inflow pattern influences the flow field and the particle behavior in a filter vessel. The particle loading onto the filter surface lowers significantly and decreases dramatically with particle size when the dusty gas flows into the filter vessel with a shroud tube through a tangential inlet setup tangentially on the vessel outer wall. However, the particle loading is considerably high when the dusty gas enters the filter vessel through a normal inlet setup vertically on the vessel top wall, and the decrease of the particle loading with particle size is not steeper compared with the tangential inflow pattern.

Three Dacades of Labour Politics in Korean Labour Movement - Reflections and Critics (한국 노동운동의 1기 노동자정치세력화 30년 : 성찰과 비판)

  • Roh, Joongkee
    • Korean Journal of Labor Studies
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    • v.24 no.3
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    • pp.179-209
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    • 2018
  • Three dacades of time have passed since the Korean labour movement experimented its political empowerment struggle. Generally it has failed for all some positive results. But unfortunately there were no critical and intellectual reflections regarding the failure within the labour movement. This study drew three conclusions. Firstly, the success or failure of political experiments was caused mainly by the labour regime changes of the Korean society. Secondly, the motive power was provided not by the progressive party, the Democratic Labour Party, but by the trade union movement and organization, the Minjoonochong. Lastly, the Candle-Light revolution in 2016 has produced some new conditions for the second stage of political empowerment praxis in Korean labour movement.

A Study on Combustion Property of Cellulose Insulation according to Particle Size (입도에 따른 셀룰로오스 단열재의 연소특성에 관한 연구)

  • Choi, Jeong-hwa;Kim, Hong;Yoo, Kyong-Ok
    • Proceedings of the Korea Institute of Fire Science and Engineering Conference
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    • 1996.11a
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    • pp.62-67
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    • 1996
  • The smouldering combustion of cellulose Insulation treated with boric acid - borax - aluminium sulfate as combustion retardants are examined by candle type combustibility tester. The flammability behavior of combustion process is LOI, Smouldering region, Smouldering, Flamming spread region and Flame spread region. In this experiment, Particle size of four examined LOI, L.Point, H.Point, at the biggest size show high LOI. The surface area is connected with thermal conduction. The phenomena of combustion transition are governed by quantity of combustible gas generation in heating zone of cellulose insulation.

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Investigations on High Temperature Filtration System for Particle Removal using Ceramic Candle Filter in the Pilot Scale Vitrification Plant (유리화 공정에서의 세라믹 캔들 필터를 이용한 분진 제거목적의 고온 여과 시스템에 관한 연구)

  • 류보현;박승철;황태원;하종현
    • Proceedings of the Korea Air Pollution Research Association Conference
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    • 2003.05b
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    • pp.391-392
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    • 2003
  • 한전 원자력 환경기술원에서는 중ㆍ저준위 방사성폐기물 유리화 기술의 상용화 가능성을 입증하기 위한 유리화 실증설비를 건설하여 시험 중에 있으며 이 유리화 기술은 유도 가열식 저온로(Cold Crucible Melter, CCM)에 폐기물을 투입하는 기술로서 폐기물의 부피 축소 효과와 더불어 최종 고화물로 생성되는 폐기물의 침출율이 매우 낮은 장점을 지닌다. 이와 같은 유리화 공정은 기존의 소각처리에서와 같이 폐기물의 열적 산화과정에 의해 유해오염가스와 입자성 물질이 발생된다. 따라서 이를 처리하기 위해배기체 처리공정(Off Gas Treatment System, OGTS)을 설치하여 환경 배출기준(SO$_2$300ppm, NO$_2$ 200ppm, CO 600ppm, HCI 50ppm, 분진 100mg/Nm$^3$ 등)을 만족하도록 하였고 특히 입자성 물질은 후단 OGTS나 배관내 침적으로 인한 방사성 오염을 막기 위해 CCM 후단에서 효율적으로 제거되어야만 한다. (중략)

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Characterization of Pre-service Elementary Teachers' Scientific Reasoning in Experimental Design: Interaction between Knowledge and Reasoning (실험 설계에 나타난 초등 예비교사의 과학적 추론의 특징: 지식과 추론의 상호작용)

  • Jang, Byung-Ghi
    • Journal of Korean Elementary Science Education
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    • v.31 no.2
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    • pp.227-242
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    • 2012
  • This research explores the scientific reasoning of pre-service elementary teachers in experimental design. The article focuses on pre-service teachers' responses to the questions in the worksheets which involve making their knowledge claims on extinguishing of a burning candle in a closed container, evaluating anomalous data, and designing experiment to test their ideas. Their responses are interpreted in terms of categories developed by Tytler and Peterson(2003, 2004). The interrelationship between conceptual knowledge and scientific reasoning is explored using the data. It is argued that coordination of ideas and evidence must be emphasized in the scientific investigations rather than fair test.

Process Evaluation for Current Ceramic Filters and Granular Bed Filters for High Temperature High Pressure Applications

  • Chung, Jin-Do
    • Journal of Energy Engineering
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    • v.5 no.2
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    • pp.138-145
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    • 1996
  • The particulate collection at high temperature and high pressure (HTHP) is important on the advanced coal power generation system not only to improve the thermal efficiency of the system, but also to prevent the gas turbine from erosion and to meet the emission limits of the effluent gas. The specifications for particulate collection in those systems such as Integrated Coal Gasification Combined Cycle (IGCC) and Pressurized Fluidized Bed Combustion (PFBC) require the absolutely high collection efficiency and reliability. Advanced cyclone, granular bed filter, electrostatic precipitator, and ceramic filter have been developed for particulate collection on the advanced coal power generation system. However, rigid ceramic filters and granular bed filter among them show the best potential. The current technology of these collectors was evaluated in this paper. The experienced problems of these systems on performance, materials, and mechanical design were investigated. Ceramic candle filters has the best potential for IGCC at this moment because it has nearly the highest efficiency comparing with other filtering systems and has accumulated many reliable design data resulted from many field experiences.

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Fabrication and Properties of Ceramic Candle Filter for Filtration System of Coal Gasification (석탄가스화 정제시스템용 세라믹 캔들 필터 제조 및 특성)

  • Han, In-Sub;Seo, Doo-Won;Hong, Ki-Seog;Kim, Se-Young;Yu, Ji-Hang;Woo, Sang-Kuk
    • 한국신재생에너지학회:학술대회논문집
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    • 2009.06a
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    • pp.844-847
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    • 2009
  • 진공압출성형 공정을 이용하여 한쪽 끝단이 막힌 다공질 탄화규소 캔들 필터를 단일공정으로 제조하는 기술을 확립하였다. 캔들 필터 지지층의 특성 최적화를 위해 탄화규소 출발입자와 무기바인더의 첨가량 변화를 통해 기계적 특성과 기공크기 등의 분석을 수행하여 상용 캔들 필터의 수준에 대응할 수 있는 조합을 도출하였다. Mullite와 clay를 소결조제로 사용하고, $30{\mu}m$ 입도의 탄화규소 입자로 지지층을 제조한 경우, 30% 이상의 기공율을 보유하면서 50 MPa 이상의 상온 3점 굽힘강도를 나타낼 수 있는 조건이 확립됨에 따라 $125{\mu}m$ 입도의 탄화규소와 bi-modal로 사용할 경우, 상용제품의 특성을 상회하는 탄화규소 캔들 필터가 제조될 수 있음을 확인하였다.

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A Study on the Color Symbol on Costume in the Virgin Mary and an Infant Jesus Icons (성모자도상에 나타난 복색의 상징성)

  • 남윤숙
    • Journal of the Korean Society of Costume
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    • v.49
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    • pp.95-112
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    • 1999
  • The purpose of this study was to research of color symbol on white in the Virgin Mary and an Infant jesus icons. For this purpose icons were selected and analyzed from the medieval ages to the 18th century. The results were as follows. Icons on the subject of the Annnunciation and the Nativity should be expressive of nobility immaculacy and innocence of the Virgin Mary and an Infant Jesus. With this view white was used to be color of candle a waxing moon lily kettle dress bedspredad towel wall encircled garden and became symbolic color in the Icons. As a result the color symbol of white the meaning of immaculacy and innocence disseminated according to spread of the Christian religion. In these days though elimination of the religious meaning the white color is using continuosly as a symbolic color of immaculacy and innocence.

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Studies on Campylobacter jejuni and Campylobacter coli contamination on broiler carcasses in slaughterhouse (도계장 도계의 Campylobacter 균 오염에 관한 연구)

  • Na, Ho-Myung;Koh, Ba-Ra-Da;Park, Seong-Do;Kim, Yong-Hwan
    • Korean Journal of Veterinary Service
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    • v.30 no.1
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    • pp.77-84
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    • 2007
  • The present study was carried out to investigate the incidence of Campylobacter spp. from the chicken carcasses in slaughterhouse. A total of 9 strains were primarily isolated from enrichment culture and selective culture of the sample with candle and microaerophilic chamber method. Nine of Gram-negative, catalase-positive and oxidase-positive strains were further isolated by the determination of biochemical characteristics and finally identified as Campylobacter jejuni with HIP 400F and HIP l134R primers. Therefore, this PCR method proved to be useful as a routine diagnostic test for the Campylobacter detection and confirmation of C. jejuni and C. coli in naturally contaminated poultry samples.