• 제목/요약/키워드: Powdered

검색결과 861건 처리시간 0.028초

분말형 폴리머 혼화제를 적용한 고강도.고차수성 레디믹스트 숏크리트의 물리적 성능 평가 (Evaluation of Physical Performance of High-Strength.High Waterproof Ready-mixed Shotcrete using Powdered Polymer Dispersion)

  • 마상준;최희섭;이흥수
    • 한국콘크리트학회:학술대회논문집
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    • 한국콘크리트학회 2008년도 추계 학술발표회 제20권2호
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    • pp.337-340
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    • 2008
  • As the Ready-mixed Shotcrete using Powdered Polymer Dispersion, Shotcrete Matrix as totally shotcrete gel that a part of second binder in Shotcrete materials is dense. Also, Ready-mixed Shotcrete is showed the decreasing Rebound and rising Durability. Therefore, it is possible that Ready-mixed Shotcrete for High-Strength and High-Waterproof can apply to the Powdered Polymer Dispersion.

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동결건조 $\alpha$-미분의 물성에 관하여 (Rheological Properties of Freeze Dried $\alpha$-Rice Powder)

  • 김관유
    • 한국식품영양학회지
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    • 제4권2호
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    • pp.199-206
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    • 1991
  • Rheological properties of $\alpha$-rice powder were investigated in comparison with those of polished rice powder. Flow behavior for cooked solutions of two powdered samples(5~11%) were Binghampseudo plastic. Consistency index and yield stress of cooked solution of powdered a-rice were much lower than those of polished rice powder while flow behavior index was nearly similar. 9% cooked solution of powdered $\alpha$ -rice showed slightly weaker thixotrophic behavior and more ease tendency to relax under the steady shear than those of polished rice powder.

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폐유리 분말을 이용한 콘크리트 제품 개발 (Development of Concrete Materials Using Powdered Waste Glasses)

  • 서동훈;김광기;조상영;박선길;박병근;정상진
    • 한국콘크리트학회:학술대회논문집
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    • 한국콘크리트학회 2001년도 가을 학술발표회 논문집
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    • pp.1065-1070
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    • 2001
  • The present age, it has been often reported that recycling of wasted glasses should be a great topic in related business circles. For the enviromental reasons, a public institution are looking for the ways of recycling these waste glasses. Consequently, the purpose of this research is to recycle crushed and powdered waste glasses by substituting for the cement in mortar and concrete. First of all, the optimum replacement ratio of Powdered Waste Glasses(PWG) can be obtained from the pilot test results. Secondary, we make advances in recycling of waste glasses as recycled to make secondary concrete products. So, we manufactured concrete brick and block contained powdered waste glasses by through mortar pilot test.

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폐유리 분말을 이용한 콘크리트 제품의 성능 분석에 관한 실험적 연구 (The Experimental Study on the Testing of Performance for Concrete Materials Using Powdered Waste Classes(PWG))

  • 서동훈;김상미;박재한;강태경;박선길;정상진
    • 한국콘크리트학회:학술대회논문집
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    • 한국콘크리트학회 2002년도 봄 학술발표회 논문집
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    • pp.329-334
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    • 2002
  • The present age, it has been often reported that recycling of wasted glasses should he a great topic in related business circles. For the enviromental reasons, a public institution are looking for the ways of recycling these waste glasses. First of all, the purpose of this research is to recycle crushed and powdered waste glasses by substituting for the cement in mortar and concrete. the optimum replacement ratio of Powdered Waste Glasses(PWG) can be obtained from the pilot test results. Secondary, we made advances in recycling of waste glasses as recycled to make secondary concrete products. so, we manufactured concrete brick, block and interlocking block for side walk contained powdered waste glasses. finally, we compare properties among of concrete products to slove the economical and environmental problems.

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폐유리 분말을 이용한 모르터 기초실험과 콘크리트 제품 개발을 위한 연구 (The experimental study on the basic test by mortar and the development of concrete material using Powdered Waste Glasses)

  • 서동훈;김광기;박선길;박병근;정병훈;정민영
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2001년도 학술논문발표회
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    • pp.58-63
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    • 2001
  • Recently, it has been often reported that recycling of wasted glasses should be a great topic in related business circles. For the environmental reasons, a public institution are looking fur the ways of recycling these waste glasses. Consequently, the purpose of this research is to recycle crushed and powdered waste glasses by substituting for the cement in mortar and concrete. First of all, the optimum replacement ratio of Powdered Waste Glasses(PWG) can be obtained from the pilot test results. Secondary, we make advances in recycling of waste glasses as recycled to make secondary concrete products. So, we manufactured concrete brick and block contained powdered waste glasses by through mortar pilot test.

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안체환의 현미감정연구 (Microscopic Identification of the Chinese Patent Medicine 'An Che Whan')

  • 김정묘;김성령;박종희
    • 생약학회지
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    • 제37권3호
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    • pp.196-199
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    • 2006
  • 'An Che Whan(安滯九)' is a Chinese patent medicine which has been used for gastric ulcer and digestive disorder in Korea. It consists of 15 kinds of powdered crude drugs. In powdered crude drugs, it is hard to identify each component by chemical analysis or morphological examination. However, the method of identification of powdered crude drugs has not been clearly established. For the identification of individual crude drugs in such powdery mixtures, a microscopic method may be used conveniently as it requires only a small amount of specimens. In this study, it is demonstrated that the microscopic method is very effective fer the identification of the 15 crude drug ingredients in An Che Whan.

분말생약(粉末生藥)의 연구(硏究) -용각산(龍角散)의 현미감정(顯微鑑定) 연구(硏究)- (Microscopic Identification of the Powdered Crude Drug in $Yongkaksan^{\circledR}$)

  • 김영희
    • 생약학회지
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    • 제25권4호통권99호
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    • pp.399-401
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    • 1994
  • $Yongkaksan^{\circledR}$ is a powdered crude drug which is used to treat cough and recommended it as an expectorant. It is composed of Platycodi Radix (11.7 mg), Senegae Radix(0.5 mg), Armeniacae Semen(0.83 mg) and Glycyrrhizae Radix(8.3 mg). For the identification of individual ingredients in such powdery mixtures, microscopic method may be considered to be efficacious due to requirement of a small amount of specimens. In this paper, effectiveness of this method will be exemplified by the identification of the ingredients in $Yongkaksan^{\circledR}$ which contains 4 powdered crude drug ingredients.

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환소단의 현미감정연구 (Microscopic Identification of 'Hwan So Dan')

  • 김정묘;정지현;박종희
    • 생약학회지
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    • 제36권4호통권143호
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    • pp.278-281
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    • 2005
  • 'Hwan So Dan(還少丹)' is Chinese patent medicine which has been used for shortage of vitality and asthenia in Korea. It consists of 14 kinds of powdered crude drugs. In powdered crude drugs, it is hard to identify each component by chemical analysis or morphological examination. However, the method of identification of powdered crude drugs has not been clearly established. For the identification of individual crude drugs in such powdery mixtures, microscopic method may advantageously be used as it requires only a small amount specimens. In this study, it is demonstrated that the microscopic method is very effective for the identification of 14 crude drug ingredients in Hwan So Dan.

Isolation and Genotyping of Enterobacter sakazakii from Powdered Infant Formula Manufactured in Korea

  • Yoo, Mi-Kyung;Kim, Suk-Shin;Oh, Sang-Suk
    • Food Science and Biotechnology
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    • 제14권6호
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    • pp.875-877
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    • 2005
  • Presence of Enterobacter sakazakii, occasional pathogen of powdered infant formula causing rare, but life-threatening diseases such as neonatal meningitis, bacteremia, necrotizing enterocolitis, and necrotizing meningoencephalitis after ingestion was examined in 45 powdered infant formula products manufactured in Korea using chromogenic Druggan-Forsythe-Iversen (DFI) medium, and isolates were identified with API 20E. Ent. sakazakii was isolated from three products. Ent. sakazakii isolates were genotyped by RAPD-PCR using two random primers, and their banding patterns were compared.

Development of the High Performance Thermoelectric Modules for High Temperature Heat Sources

  • Jinushi, Takahiro;Okahara, Masahiro;Ishijima, Zenzo;Shikata, Hideo;Kambe, Mitsuru
    • 한국분말야금학회:학술대회논문집
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    • 한국분말야금학회 2006년도 Extended Abstracts of 2006 POWDER METALLURGY World Congress Part 1
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    • pp.79-80
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    • 2006
  • From a viewpoint of heat stress at high temperatures and contact thermal resistance, it is confirmed that the optimal structure is the skeleton structure using Cu substrate on the cooling side, which has excellent heat conductivity and the optimal installation method is to adopt a carbon sheet and a mica sheet to the high temperature side, where Si grease is applied to the low temperature side, under pressurized condition. The power of the developed modules indicated 0.5W in an $FeSi_2$ module and 3.8 W with a SiGe module at 823K, respectively.

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