• 제목/요약/키워드: Amount of Circulation

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석회석미분말이 첨가된 비시멘트 조성물의 압축강도 특성 (Compressive Strength Characteristics of Non-Cement Composition Added with Limestone Powder)

  • 김영민;정재호
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2019년도 추계 학술논문 발표대회
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    • pp.178-179
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    • 2019
  • The cement industry is a large amount of carbon dioxide emission industry, and research and development on non-cement composition is underway at the time when the absolute reduction of cement use is urgently needed. In addition, limestone fine powder is a by-product and is required to be recycled in terms of resource circulation. The compressive strength of the lime cement powder added noncement composition showed that the compressive strength increased as the limestone powder was added. It is believed that limestone fine powder played a role of stimulant such as alkali activator in non-cement composition.

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Recycle Technology of Sewage Sludge by Carbonization Process

  • Park, Sang-Woo;Jang, Cheol-Hyeon;Kim, Nack-Joo
    • 한국환경과학회:학술대회논문집
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    • 한국환경과학회 2003년도 International Symposium on Clean Environment
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    • pp.204-207
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    • 2003
  • This study has been conducted for the purpose to develop a new technology using the carbonization process for establishing the resources circulation system for sewage sludge and enabling the sludge amount and volume to be reduced sanitarily and safely. Besides, it is thought that the effective value of the carbonized sludge is much greater even though there is any limitation to its applicable fields or use since it is not a product that is intentionally produced like any existing materials for conventional uses.

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배풍열 회수장치를 이용한 고추의 건조특성에 관한 연구 (Drying Characteristics of Red Pepper using Exhaust Heat Recovery System)

  • 백이;조기현;정형길
    • 한국산업융합학회 논문집
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    • 제6권2호
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    • pp.103-108
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    • 2003
  • This study was performed to find out drying characteristics and develop waste heat recovery dryer. this system was initiated in order to recover discharged waste heat of drying air from drying chamber in agricultural products dryer and recycle for additional heat source that could save drying cost. The system consists of drying chamber, fan, burner, circulation pump and heat exchanger made of fins and tubes. For the system performance, drying experiments with fresh pepper were conducted, and comparisons on fuel consumption amount and drying performance were made between conventional dryer and the heat recovery system attached dryer.

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전문용어 조어 및 번역 방법론에 대한 시론 (Essay on Terminology Formation and Translation Methodology in Korean)

  • 이현주
    • 비교문화연구
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    • 제31권
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    • pp.331-370
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    • 2013
  • In this knowledge based society, the circulation of knowledge and information is more and more increasing. Terms, as denominations of every specialized concept, has grown in quantity and there are considerable amount of foreign terminology coming to settle down in Korean language. Since terminologies quickly generate and be extinguished, it is important to translate in appropriate way at the very first phase of terminology implementation. This article aims to elaborate the typology of korean terminology translation forms, and propose some guidelines for terminology formation and translation methodology. ISO terminology principle and other institutes' propositions for term formation as well as translational theories constitute two basic columns of the guidelines.

유즙분비이상에 관한 문헌적 고찰 (Bibliographic Studies on Disorder of Milk Secretion)

  • 반혜란;양승정;박경미;조성희;이진아
    • 동의생리병리학회지
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    • 제19권2호
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    • pp.329-338
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    • 2005
  • Breast milk is general term for crude milk and mature that is secrete after two-three days of delivery. Because amount of milk secretion is different, disorder of milk secretion is to be classified into galactostasis and spontanous flow of milk. According to this point, we considered thirty four papers and got the conclusion about the concept, cause, therapeutic method and medication of secreation disorder. Therefore we report the result. galactostasis due to deficiency of the qi and blood, depression of liver qi, blood stasis of postpartum, excessiveness and so on. If the qi and blood is deficient, therapeutic method is enriching qi and benefiting blood, if the liver qi is deprssive, treatment is relieving the deprssive liver and regulating the circulation of qi. The milk is flowing spontanously and continously due to a prosperous condition of qi and blood, too deficiency of the qi and blood, depression of liver qi and so on. If the qi and blood is deficient, therapeutic method is tonifying and arresting the qi and blood, if Liver channel is stagnated fire, puring the liver of pathologic fire, relieving the deprssive liver and regulating the circulation of qi. Clinical study for the 1 case of the recurrent cervical cancer patient.

Domus Dedaly: Rumor, Ricardian England, and the Conception of Poetic Discourse in The House of Fame

  • Lim, Hyunyang
    • 영미문화
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    • 제14권2호
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    • pp.207-232
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    • 2014
  • Scholars have considered Chaucer's House of Fame mostly as an ars poetica, in which the poet explores new poetic principles and subject matters, while making few attempts to understand the poem in its historical and social contexts. Investigating the nature of the "tidings" that Chaucer suggests as the new source of his poetic inspiration, this paper argues that the house of Rumor was modeled after late fourteenth century English society that experienced increased appetite for news. The political upheaval during the period from the English Rising in 1381 to the reign of Henry IV in the early fifteenth century produced an unprecedented amount of written and oral propaganda. The proliferation of seditious rumors as well as protests and promulgations during this period indicates how seriously medieval society was engaged with the circulation of news. Particularly, the case of John Shirle in 1381 and the legend about the survival of Richard II demonstrate the subversive power of medieval rumor that often served as a political discourse with which people expressed their oppositions to government. Conspicuous in the activities of both the government and late medieval political protestors was the extensive use of writing. The posting of bills in public places continued until the fifteenth century, when such activities became so common and dangerous that the government had to issue proclamations forbidding the circulation of such seditious writings. The number of extant royal proclamations, written protests, and pamphlets demonstrates that already in the late fourteenth and fifteenth centuries the notion of a discursive public space began to emerge. Whether written or orally transmitted, news and rumor circulated in late medieval England, creating a social space in which people shared their political opinions before the introduction of the early modern print culture. In The House of Fame Chaucer calls attention to the subversiveness of rumor, its potential as a public discourse, and the power of written communication in creating truth in order to appropriate these characteristics for his English poems.

Tumoral Accumulation of Long-Circulating, Self-Assembled Nanoparticles and Its Visualization by Gamma Scintigraphy

  • Cho, Yong-Woo;Kim, Yoo-Shin;Kim, In-San;Park, Rang-Woon;Oh, Seung-Jun;Moon, Dae-Hyuk;Kim, Sang-Yoon;Kwon, Ick-Chan
    • Macromolecular Research
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    • 제16권1호
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    • pp.15-20
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    • 2008
  • The enhanced permeability and retention (EPR) effect is used extensively for the passive targeting of many macromolecular drugs for tumors. Indeed, the EPR concept has been a gold standard in polymeric anticancer drug delivery systems. This study investigated the tumoral distribution of self-assembled nanoparticles based on the EPR effect using fluorescein and radio-labeled nanoparticles. Self-assembled nanoparticles were prepared from amphiphilic chitosan derivatives, and their tissue distribution was examined in tumor-bearing mice. The size of the nanoparticles was controlled to be 330 run, which is a size suited for opening between the defective endothelial cells in tumors. The long-circulating polymer nanoparticles were allowed to gradually accumulate in the tumors for 11 days. The amount of nanoparticles accumulated in the tumors was remarkably augmented from 3.4%ID/g tissue at 1 day to 25.9%ID/g tissue at 11 days after i.v. administration. The self-assembled nanoparticles were sustained at a high level throughout the 14 day experimental period, indicating their long systemic retention in the blood circulation. The ${\gamma}$-images provided clear evidence of selective tumor localization of the $^{131}I$-labeled nanoparticles. Confocal microscopy revealed the fluorescein-labeled nanoparticles to be preferentially localized in the perivascular regions, suggesting their extravasation to the tumors through the hyperpermeable angiogenic tumor vasculature. This highly selective tumoral accumulation of nanoparticles was attributed to the leakiness of the blood vessels in the tumors and their long residence time in the blood circulation.

하지에 발생한 연부 조직 종양의 광범위 절제술 후 재건술에서 전외측 대퇴부 유리 피판술의 유용성 (The Signification of Anterolateral Thigh Free Flap for Reconstruction of Soft Tissue Defect in Malignant Soft Tissue Tumor of Lower Extremity)

  • 권영호;이근우
    • Archives of Reconstructive Microsurgery
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    • 제20권2호
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    • pp.89-95
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    • 2011
  • Purpose: The purpose of this study was to evaluate the clinical results of anterolateral thigh free flap on soft tissue defect following wide excision in malignant soft tissue tumor of lower extremities. Methods: Between February 2005 to April 2010, we followed up 19 cases who were undergoing anterolateral thigh free flap because of soft tissue defect following wide excision of malignant soft tissue tumor in lower extremity, including 9 cases were heel, 5 cases in foot, 3 cases in ankle, 2 cases in knee and leg. We observed that of implanted area's color, peripheral circulation at 3, 5, 7 days after operation and evaluated operating time, amount of hemorrhage, implanted skin necrosis, additional operations, complications. And we also evaluated the oncologic results, including local recurrence, metastasis, and morbidity. Results: Average operation time of wide excision and anterolateral thigh free flap was 7 hour 28 minutes. 18(94.7%) of total 19 cases showed successful engraftment, on the other hand, failure of engraftment due to complete necrosis of flap in 1 case. In 18 cases with successful engraftment, reoperation was performed in 4 cases. Among them, removal of hematoma and engraftment of flap after bleeding control was performed in 3 cases, because of insufficient circulation due to the hematoma. In the remaining 1 case, graft necrosis due to flap infection was checked, and grafted after combination of wound debridement and conservative treatment such as antibiotics therapy, also skin graft was performed at debrided skin defect area. Skin color change was mainly due to congestion with hematoma, flap was not observed global congestion or necrosis except 4 cases which shows partial necrosis on margin that treated with conservative therapy. Conclusions: Anterolateral thigh free flap could be recommended for reconstruction of soft tissue defect following wide excision of malignant soft tissue tumor in lower extremity.

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The Generative Mechanism of Cloud Streets

  • Sung-Dae Kang;Fujio Kimura
    • 한국환경과학회지
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    • 제1권2호
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    • pp.119-124
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    • 1992
  • Cloud streets were successfully simulated by numerical model (RAMS) including an Isolated mountain near the coast, large sensible heat flux from the sea surface, uniform stratification and wind velocity with low Froude number (0.25) in the inflow boundary The well developed cloud streets between a pair of convective rolls are simulated at a level of 1 km over the sea. The following five results were obtained: 1) port the formation of the pair of convective rolls, both strong static instability and a topographically induced mechanical disturbance are strongly required at the same time. 2) Strong sensible heat flux from the sea surface is the main energy source of the pair of convective rolls, and the buoyancy caused by condensation in the cloud is negligibly small. 3) The pair o( convective rolls is a complex of two sub-rolls. One is the outer roll, which has a large radius, but weak circulation, and the other is the inner roll, which has a small radius, but strong circulation. The outer roll gathers a large amount of moisture by convergence in the lower marine boundary, and the inner roll transfers the convergent moisture to the upper boundary layer by strong upward motion between them. 4) The pair of inner rolls form the line-shaped cloud streets, and keep them narrow along the center-line of the domain. 5) Both by non-hydrostatic and by hydrostatic assumptions, cloud streets can be simulated. In our case, non-hydrostatic processes enhanced somewhat the formation of cloud streets. The horizontal size of the topography does not seem to be restricted to within the small scale where non-hydrostatic effects are important.

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흡수식 대온도차 시스템에서 2단 증발/흡수기의 성능 특성에 관한 수치적 연구 (Performance analysis for the Characteristics of Double Stage Evaporator/Absorber for Large temperature Difference Absorption System)

  • 박찬우;강용태;임익태;문상돈
    • 대한설비공학회:학술대회논문집
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    • 대한설비공학회 2008년도 하계학술발표대회 논문집
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    • pp.304-308
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    • 2008
  • The optimal design of two stage evaporation & absorption system which is related to the large temperature difference system was investigated numerically in the absorption refrigeration system. The concentrations at inlet & oulet of absorber are 62.9% and 56.9%, but in two stage absorption system the values are 62.2% and 56.2%. Therefore strong solution & weak solution became diluted than the standard value. The amount of weak solution circulation can be reduced in absorption refrigeration system, and the sensible heat load is more reduced to enhance the COP of system. As UAR is increased, COP becomes larger, and this means the role of top section is more important than bottom section in two stage evaporation & absorption system. But the increase of COP becomes slower at 0.7 of UAR ratio. The performance of Type2 is higher than Type1 in COP with the flow direction of cooling waters. This phenomena is due to the active absorption of vapor -absorption & lower temp. cooling water is more effective. The pressure at bottom section becomes higher & that at top section becomes lower and therefore the circulation rate can be diminished more.

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