• 제목/요약/키워드: organic medium

검색결과 759건 처리시간 0.026초

Nutritional Flexibility of Oligotrophic and Copiotrophic Bacteria Isolated from Deionzed-ultrapure Water Made by High-purity Water Manufacturing System in A Semiconductor Manufacturing Company

  • Kim, In-Seop;Kim, Seung-Eun;Hwang, Jung-Sung
    • Journal of Microbiology and Biotechnology
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    • 제7권3호
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    • pp.200-203
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    • 1997
  • Bacteria isolated from ultrapure water made by a high-purity water manufacturing system in a semiconductor manufacturing plant were classified into two groups which either grew in diluted nutrient broth medium (oligotrophic bacteria) or could not grow (copiotrophic bacteria). The nutritional flexibility of oligotrophic and copiotrophic bacteria was investigated. The oligotrophic bacteria were shown to be able to utilize a significantly broader range of organic substrates than the copiotrophic bateria. This finding substantiates the hypothesis that nutritional flexibility is adaptive for oligotrophic bacteria.

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크리스 커닝햄의 작품에서 표현된 그로테스크 신체 (Expression of Grotesque Body in Chris Cunningham' Work)

  • 김호;김재웅
    • 한국콘텐츠학회논문지
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    • 제9권2호
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    • pp.173-180
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    • 2009
  • 최근 신체는 미의 범주에서 점차 확대되어 환경에 의해 변형되는 유기적인 매체로 바뀌어가고 있다. 이러한 신체는 디지털 테크놀로지 기술 발달의 의해 변형되고 왜곡되어 더 현실감 있게 재현되고 있다. 이렇게 과장된 신체의 이미지에서 관객들은 그로테스크한 느낌을 받게 된다. 영국 감독 크리스 커닝햄은 그로테스크 신체를 주제로 영상작업을 시도하고 있다. 본 논문에서는 그의 작품의 디지털 미디어를 통한 카니발적, 언캐니적 그로테스크 신체 표현 방식의 단계와 그로테스크 신체 이미지의 궁극적인 목표에 관해 접근 하였다.

Anaerobic digestate as a nutrient medium for the growth of the green microalga Neochloris oleoabundans

  • Abu Hajar, Husam A.;Guy Riefler, R.;Stuart, Ben J.
    • Environmental Engineering Research
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    • 제21권3호
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    • pp.265-275
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    • 2016
  • In this study, the microalga Neochloris oleoabundans was cultivated in a sustainable manner using diluted anaerobic digestate to produce biomass as a potential biofuel feedstock. Prior to microalgae cultivation, the anaerobic digestate was characterized and several pretreatment methods including hydrogen peroxide treatment, filtration, and supernatant extraction were investigated and their impact on the removal of suspended solids as well as other organic and inorganic matter was evaluated. It was found that the supernatant extraction was the most convenient pretreatment method and was used afterwards to prepare the nutrient media for microalgae cultivation. A bench-scale experiment was conducted using multiple dilutions of the supernatant and filtered anaerobic digestate in 16 mm round glass vials. The results indicated that the highest growth of the microalga N. oleoabundans was achieved with a total nitrogen concentration of 100 mg N/L in the 2.29% diluted supernatant in comparison to the filtered digestate and other dilutions.

Improved EL efficiency and operational lifetime of top-emitting white OLED with a co-doping technology

  • Lee, Meng-Ting;Tseng, Mei-Rurng
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2007년도 7th International Meeting on Information Display 제7권2호
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    • pp.1411-1414
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    • 2007
  • We have developed a top-emitting white organic electroluminescent device (TWOLED) incorporating a low-reflectivity molybdenum (Mo) anode and doped transport layers as well as a dual-layer architecture of doped blue and yellow emitters with the same blue host. The EL efficiency and operational lifetime of TWOLED can be enhanced by a factor of 1.2 and 3.4 than that of standard TWOLED, respectively, with a co-doping technology in yellow emitter by doping another blue dopant. The enhancement in device performances can be attributed to improve the energy transfer efficiency from blue host to yellow dopant through a blue dopant as medium in yellow emitter.

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A photoswitch from conjugative aromatic polymers

  • Kwon, Tae-Chang;Kim, Yong-Jung;Kim, Yu-Na;Lee, Hyo-Jin;Rameshbabu Krishnamurthy;Sarwade Bhimrao D.;Kim, Eun-Kyoung
    • 한국고분자학회:학술대회논문집
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    • 한국고분자학회 2006년도 IUPAC International Symposium on Advanced Polymers for Emerging Technologies
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    • pp.174-174
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    • 2006
  • By condensing two different functional monomers, highly fluorescent aromatic polymers were prepared to produce a conjugated- conjugated spacer-type copolymer or conjugated-non-conjugated spacer-type copolymer. As synthesized polymers were soluble in an organic solvent and showed significantly enhanced optical properties compared to its monomer. Variation in the monomer composition afforded polymers having multifunctionaility such as photochromic-fluorescent polymers. Transparent thin films of the polymer as a solid medium were prepared using spin coating method and fabricated as a photoswitch, which showed photo-induced conductivity switching properties depending on the core monomeric unit in the polymers.

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Fabrication of Polymer Laser Device by Two-Photon Induced Photopolymerization Technique

  • Yokoyama, Shiyoshi;Nakahama, Tatsuo;Miki, Hideki
    • 한국고분자학회:학술대회논문집
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    • 한국고분자학회 2006년도 IUPAC International Symposium on Advanced Polymers for Emerging Technologies
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    • pp.231-231
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    • 2006
  • We fabricated a polymer sub-microstructure for optical device application by two-photon-induced laser lithography technique. Polymer pattern could be minimized as small as ${\sim}100\;nm$. The photopolymerization resin contains laser-dye, thus promising a high level of the optical gain. We utilized the lithography technique to the photonic crystal application, where the template of the two-dimensional photonic crystal was modified by polymer gain medium as defect-shape and line-shape orientations. Photonic band gap effect from polymer-doped photonic crystals is expected to exploit the application such as organic solid-state laser device.

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New Photo-addressable Electronic Paper Using An Electrophoretic Device

  • Kang, Seung-Youl;Kim, Chul-Am;Joung, Meyong-Ju;Yu, Dong-Guk;Ahn, Seong-Deok;Lee, Yong-Eui;Suh, Kyung-Soo
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2003년도 International Meeting on Information Display
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    • pp.528-530
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    • 2003
  • We present a novel photo-addressable electronic paper using an electrophoretic device, which can show and sustain the 2D images transferred by the UV illumination. The device consists of the organic photoconducting layer reacting with the UV illumination and the electronic ink (white particles and blue dye) dispersing in a suspending medium. The voltage impression under illuminating of UV make an image be transferred to the electrophoretic cell. The transferred image can be maintained by the bistability of the electrophoretic device.

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Influence of Different Sugar Regimes on the Growth of Callus Culture of Taxus baccata L. and the Production of Taxanes

  • Silhava, Irena;Lipavska, Helena;Vanek, Tomas
    • 식물조직배양학회지
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    • 제27권5호
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    • pp.401-405
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    • 2000
  • Influence of fructose addition to the cultivation medium on the production of taxanes and the growth of callus culture of Taxus baccata was studied. The cultures showed an ability to adjust to the substitution of some of the sucrose in the media by fructose and the fresh biomass accumulation was higher on the media containing different concentrations of fructose during the second cultivation period.

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기업의 노동생산성 향상을 위한 분석연구 (An Analytical Study for the Labor Productivity Improvement of Enterprise)

  • 김종래
    • 산업경영시스템학회지
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    • 제4권4호
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    • pp.35-42
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    • 1981
  • This paper grasped the labor productivity actual condition by the standard of per unit working hour and production about the main products of our country's industrial the main materials and could understand the average of our country's labor productivity as compared this with the labor productivity actual condition of Japan. As the point at issue of analitical result. 1. Low a matter of thinking about productivity. 2. Have a lot of difficult problem in an industrial part. 3. Have the point at issue on technical development and accumulation. 4. Have the point at issue on management. As a countermeasure about these. 1. must convert the way of use of industrial policy. 2. must make a housing development and special serialization of a small and medium enterprise. 3. must establish an organic technical development system. 4. must grope the policy of management rationalization.

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Biobarrier를 이용한 PCE의 환원적 탈염소화시 전자공여체의 영향 (Effect of electron donor for reductive dechlorination of PCE using biobarrier)

  • 황보현욱;신원식;김영훈;송동익
    • 한국지하수토양환경학회:학술대회논문집
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    • 한국지하수토양환경학회 2003년도 추계학술발표회
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    • pp.391-394
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    • 2003
  • The applicability of in situ microbial filter or biobarrier technology for the remediation of soil and groundwater contaminated with chlorinated solvents was investigated. The efficiency and rates of reductive dechlorination of chlorinated solvents are known to be highly dependent on hydrogen concentration. In this study, the effect of electron donors on the reductive dechlorination of PCE was investigated using vermicompost (worm casting) and peat as permeable reactive barrier medium The effect of organic acids (lactate, butyrate and benzoate), yeast extract and vitamin $B_{l2}$ on the reductive dechlorination was investigated. Compared to the control (no electron donor added), addition of electron donors stimulated the dechlorinated rate. Among the electron donor treatments, lactate/benzoate amendment exhibited the highest dechlorination rate. Since vermicompost and peat are inexpensive and biodegradable and have high sorption capacity, they could be successfully used as biobarrier media, especially when electron donors (for example, lactate/benzoate) are added.d.

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