• 제목/요약/키워드: representational difference analysis

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가에타노 페세의 디자인에서 나타나는 비재현성에 관한 연구 (A Study on Non-Representational Characteristics that Appears in the Design of Gaetano Pesce)

  • 박소라
    • 한국실내디자인학회논문집
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    • 제22권5호
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    • pp.106-113
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    • 2013
  • Since the 1960's, diverse movements that oppose the uniform design tendency of modernism appears in Italy. Especially, Gaetano Pesce, who opposed uniformity and standardization that are based on mass production system, had interests in making unique product, not an identical product, while accepting modern production technology. Therefore, the purpose of this study is to comprehend Pesce's design, which creates diversity by arranging contingent, non-predictive, and episodic aspects in creative and acceptance processes according to the intension of the designer within mass production system, as a non-representational characteristic, which appears widely in modern thought and the arts, and examine how it is materialized in detailed design work. The study methods are first examining non-representation with theoretical contemplation and dealing with the design philosophy of Pesce based on the examination. Next, in order to discover non-representational characteristics that appear in the work of Pesce, it examines from introducing worker's creativity, user's possibility of choice, openness in the working process, and the aspects of researching materials. And a specific application method will be drawn through case analysis centered on furniture design. Gaetano Pesce's design that denies the world of representation based on the sameness comes to possess non-representational characteristics that acknowledge contingency and ceaselessly create difference by intentionally arranging during the working process.

Porphyromonas Gingivalis Lipopolysaccharide Increases Monocyte Adhesion to Microvascular Endothelium by Induction of Adhesion Molecules

  • Kim, Su-Ryun;Park, Hyun-Joo;Bae, Soo-Kyung;Park, Ji-Hyun;Kim, Hyo-Sun;Koo, Tae-Hyeon;Bae, Moon-Kyoung
    • International Journal of Oral Biology
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    • 제33권4호
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    • pp.149-154
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    • 2008
  • Porphyromonas gingivalis, a major periodontal pathogen, has been implicated in the initiation and progression of periodontal disease. Endothelial dysfunction (Editor note: Aberrant and dysfunction are somewhat redundant. The authors may want to choose one or the other.) contributes to chronic periodontal inflammation. Using cDNA-representational difference analysis, we found that P.gingivalis lipopolysaccharide differentially induces a number of genes in human microvascular endothelial cells. Among these upregulated genes, we focused on intercellular adhesion molecule-1 (VCAM-1), which is crucial for leukocyte recruitment during vascular inflammation. P. gingivalis LPS significantly increased the expression of vascular cell adhesion molecule-1 (VCAM-1) as well as ICAM-1. Promoter assays revealed that the transcription of these cell adhesion molecules was mainly regulated by nuclear factor-${\kappa}B$ (NF-${\kappa}B$) in endothelial cells. Furthermore, P. gingivalis LPS significantly increased leukocyte adhesiveness to microvascular endothelial cells and to aortic endothelium. Taken together, our results demonstrate that P. gingivalis LPS activates microvascular endothelial cells through NF-${\kappa}B$-dependent expression of cell adhesion molecules.

An Optimality-Theoretic Analysis of 'It'-Extraposition in English

  • Khym, Han-gyoo
    • International Journal of Advanced Culture Technology
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    • 제6권4호
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    • pp.58-64
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    • 2018
  • The Extraposition phenomenon in English has been analyzed mainly through two approaches: a derivational approach under the Principles & Parameters framework (P&P) and a representational approach under the early Minimalist framework (MP). The first one tries to understand the phenomenon as a result of the movement of a Big Subject first to the end of a sentence which is then followed by the insertion of an expletive 'it' to the empty Subject position. On the other hand, the second one tries to understand it by way of assuming a Big Subject originally base-generated at the end of a sentence which is followed by the insertion of an expletive 'it' to the empty Subject position. The two approaches, however, are not free from theoretical defects at all: the full derivational approach was under controversy in terms of (1) the failure of the Binding Theory and (2) its inability to suggest anything about the marginal reading issue. On the while, the representational approach has been argued (1) to violate the thematic hierarchy that should be kept in D-structure, and (2) to be also unable to suggest the slightest difference in marginal reading issue as the first one. In this paper I focus mainly on analyzing the 'It'-Extraposition phenomenon in the Optimality Theory. I will show that by way of (i) some newly developed constraints such as Subj., and AHSubj. and (ii) a constraint hierarchy of Subj.>>AHSubj., the controversies of 'It-Extraposition' such as (1) the analysis of construction and (2) the very closely related issue of 'marginal reading issue' can be explained properly.

Differential Gene Expression in the Pathogenic Strains of Actinobacillus pleuropneumoniae Serotypes 1 and 3

  • Xie, Fang;Zhang, Mingjun;Li, Shuqing;Du, Chongtao;Sun, Changjiang;Han, Wenyu;Zhou, Liang;Lei, Liancheng
    • Journal of Microbiology and Biotechnology
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    • 제20권4호
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    • pp.789-797
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    • 2010
  • The limited information on differential gene expression in the different serotypes of Actinobacillus pleuropneumoniae has significantly hampered the research on the pathogenic mechanisms of this organism and the development of multivalent vaccines against A. pleuropneumoniae infection. To compare the gene expressions in the A. pleuropneumoniae strains CVCC259 (serotype 1) and CVCC261 (serotype 3), we screened the differentially expressed genes in the two strains by performing representational difference analysis (RDA). Northern blot analyses were used to confirm the results of RDA. We identified 22 differentially expressed genes in the CVCC259 strain and 20 differentially expressed genes in the CVCC261 strain, and these genes were classified into 11 groups: (1) genes encoding APX toxins; (2) genes encoding transferrin-binding protein; (3) genes involved in lipopolysaccharide (LPS) biosynthesis; (4) genes encoding autotransporter adhesin; (5) genes involved in metabolism; (6) genes involved in the ATP-binding cassette (ABC) transporter system; (7) genes encoding molecular chaperones; (8) genes involved in bacterial transcription and nucleic acid metabolism; (9) a gene encoding protease; (10) genes encoding lipoprotein/membrane protein; and (11) genes encoding various hypothetical proteins. This is the first report on the systematic application of RDA for the analysis of differential gene expression in A. pleuropneumoniae serotypes 1 and 3. The determination of these differentially expressed genes will serve as an indicator for future research on the pathogenic mechanisms of A. pleuropneumoniae and the development of a multivalent vaccine against A. pleuropneumoniae infection.

Cloning and characterization of the multiprotein bridging factor 1 (YIMBFI) gene from the dimorphi yeast Yarrowia lipolytica

  • Kim, Jeong-Yoon;Kim, Jang-Hwan;Cheon, Seong-Ah;Yunkyoung Song
    • Journal of Microbiology
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    • 제40권2호
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    • pp.173-177
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    • 2002
  • In order to identify Yawowia lipolytica genes induced by serum, cDNA representational difference analysis was performed using a PCR-select CDNA subtraction method. One of the genes cloned from the subtraction was a gene (YIMBFl) homologous to Saccharomyces cerevisiae MBF1 encoding the coactivator multiprotein bridging factor 1. Disruption of YIMBFl revealed that the gene was net essential for viability, and the Ylmbf△ strain did not show any distinct phenotypic change on solid serum medium. In liquid medium, however. a difference was found in the ability to maintain hyphae induced by serum. This result suggests that the YIMbf1 protein may mediate transcriptional activation of certain genes involved in the hypha fonmation of Y. lipolytica.

인체세포주에서 저선량 $^{99m}Tc$에 의해 발현되는 방사선 적응반응에 관련된 유전자에 관한 연구 (Genes Associated with Radiation Adaptive Response Induced by Low Level Radiation from $^{99m}Tc$ in Human Cell Lines)

  • 권안성;범희승;최찬;김지열;임욱빈
    • 대한핵의학회지
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    • 제35권5호
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    • pp.313-323
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    • 2001
  • 목적: 저선량 방사선에 의해 그 이후의 고선량 방사선에 저항이 생기는 유익한 반응을 보인다는 방사선적응반응이라는 현상이 알려져 있지만, 저선량 방사선이 어떤 기작에 의해 이런 반응을 일으키는지에 대해서는 아직 알려지지 않고 있다. 본 연구에서는 정상 인체세포주에서 저선량 $^{99m}Tc$에 의해 방사선적응반응이 유도되는지를 확인하고, 이 때 활성화되는 유전자를 찾아보고자 하였다. 대상 및 방법: 인체 정상 림프구 세포주인 NC-37 세포주 $2{\times}10^6mL$개의 세포에 $^{99m}Tc$을 148 MBq/mL로부터 148 Bq/mL의 농도가 되도록 10배씩 희석하여 첨가하고 44시간동안 배양하였다. 결과: 각각의 군에 대해 이상 염색체를 계수하여 148 KBq/mL의 $^{99m}Tc$을 첨가한 군에서 방사선적응반응이 가장 현저하게 유도되었음을 확인하였다. 이 세포군에서 mRNA를 추출하고 여기에서 cDNA를 만든 후 gene discovery array (GDA) 여과기를 이용하여 대조군에 비해 발현이 증가된 casein kinase II beta chain, immunoglobulin, HLA-B 그리고 아직 알려지지 않은 2개의 유전자 등 6개의 유전자를 찾아내었다. Representational difference analysis (RDA)법을 통해서는 대조군에 비해 발현이 증가된 유전자 클론을 20개 찾아내었다. 결론: 인체세포주 NC-37에서 저선량의 $^{99m}Tc$에 의해 방사선적응반응이 유도된다는 사실을 밝혔으며, 이때 다수의 유전자가 발현된다는 사실을 알 수 있었다.

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흰쥐 성상세포에서 산소농도의존성 유전자의 분리 (Isolation of a Hypoxia/Reoxygenation Regulatory Factor in Rat Astrocytes)

  • 박정애;송현석;이혜신;김규원
    • 약학회지
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    • 제50권2호
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    • pp.124-128
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    • 2006
  • Astrocyte has emerged as an active regulator of brain function, which connects between blood vessels and neurons as well as is a structural component of the blood-brain barrier, From its structural characteristics, astrocyte seems to sensitively respond to oxygen tension, and, in turn, generate diverse cellular cascades. Therefore, to reveal astrocytlc events by oxygen change, we screened genes whose expressions are upregulated under reoxygenation after hypoxic stress using cDNA representational difference analysis (RDA) technique. Meteorin that regulates glial differentiation was isolated from primary cultured rat astrocytes as a hypoxia/reoxygenation regulatory factor. We cloned rat version of Meteorin (rMe-teorin) and determined full-size sequences of rMeteorin. In addition, RT-PCR analysis revealed that Meteorin was increased under reoxygenation in astrocytes and highly expressed in the developing brain. Collectively, these results suggest that Meteorin may regulate astrocyte-mediated effects in response to the change of oxygen tension in the pathophysiological states.