• Title/Summary/Keyword: culture complex

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Statistical Selection of Amino Acids Fortifying a Minimal Defined Medium for a High-level Production of the Kringle Fragments of Human Apolipoprotein(a)

  • Lim, Hyung-Kwon;Kim, Sung-Geun;Jung, Kyung-Hwan;Seo, Jin-Ho
    • Journal of Microbiology and Biotechnology
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    • v.14 no.1
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    • pp.90-96
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    • 2004
  • A synthetic defined medium, fortified with amino acids, was developed for the stable production of the kringle fragments of human apolipoprotein(a) (apo(a)), rhLK68. Using a complex rich medium containing yeast extract and a high-cell-density fed-batch culture, the expression level of rhLK68 reached 17% of the total cellular protein, which corresponded to $5\;g\;l^{-1}$ of the culture. To replace the complex media with chemically defined media, several amino acids that positively affect cell growth and gene expression were chosen by a statistical method. The various combinations of the selected amino acids were tested for its fortifying effect on a minimal defined medium. When glutamine only was added, the overall expression level of rhLK68 reached 93% of the complex rich medium increasing the specific expression level by 22.4% and decreasing the cell growth by 24%. Moreover, the addition of glutamine resulted in a 2-fold increase in the concentration of rhLK68 in the culture broth, compared with the minimal defined medium. The synthetic defined media developed in this study could be generally applied to high-cell-density cultures of the recombinant Escherichia coli BL21(DE3), especially for the production of therapeutic proteins that require a strict quality control of the culture media and fermentation processes.

Complex impact of Patient Safety and Medical Quality on Hospital Management Activities due to Healthcare Accreditation Adoption (의료기관인증제 도입에 따른 환자안전과 의료의 질이 병원경영활동에 미치는 복합영향)

  • Yoo, Jin-Yeong;Lee, Jong-Hwa
    • Journal of Digital Convergence
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    • v.13 no.7
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    • pp.283-292
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    • 2015
  • The purpose of this study was to confirm the complex relationship between patient safety-medical quality and hospital management activities to observe the mediating effect of organizational culture in the relationship due to healthcare accreditation adoption. For this, we conducted a 4 weeks survey, from September 22, 2014 to October 17, 2014 to the employees of 6 hospitals that could accommodate less than 300 patients or more than 300 patients located in Daegu and Gyeongbuk. The study includes 377 participants who have worked for more than one year in the hospital. All of hospital with less than 300-beds or more than 300-beds, such as patient safety-medical quality, organizational culture, hospital management activities found a positive correlation among variables. The mediating effect of organizational culture in the relationship between patient safety-medical quality and hospital management activities was shown by the partial mediating effect and high causal effect. Therefore, these study suggest that patient safety-medical quality due to healthcare accreditation adoption has the potential to improve hospital management activities.

The Uniform Design Development to Build a City Brand using its Culture - Focusing on 'Kwangju, The Cultural Hub City of Asia' - (문화도시 브랜드 이미지 구축을 위한 유니폼 디자인 개발 - '아시아문화중심도시' 광주를 중심으로 -)

  • Lim, Song-Mi;Lee, Mi-Suk
    • Journal of the Korean Society of Costume
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    • v.63 no.4
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    • pp.70-83
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    • 2013
  • Lately, cities have been trying to build a certain brand by using its identity and culture in public designs. Cities are using its public design to show its cultural identity and to differentiate itself from other cities so it is playing a significant role in establishing a city's overall image. Public uniform is used to reflect the symbolism and identity of the city, an image of the city's culture and is used as a means of communication for specialization. Thus, the purpose of this study is to develop public uniform designs to build and strengthen the brand of Gwangju as Asia cultural hub city. Research presents a review of the literature including concept and type of a cultural city, correlativity between public design and urban competitiveness, domestic and foreign culture city branding case: focusing on Gwangju which is a cultural hub city in Asia, and then study sets up the development direction and motifs of uniform designs, and uniforms are designed by making use of the textile with symbols and logos, colors, and architectural motifs of Asian Culture Complex. Development ranges of uniforms were limited to Cultural Tourism Narrators and the Asian Culture Complex Advertisements staff uniforms, within the region of cultural tourism. Textile design, illustration, uniform simulation using Adobe Photoshop 7.0 and Adobe Illustrator CS 3 program is presented.

Design, Fabrication, and Application of a Microfluidic Device for Investigating Physical Stress-Induced Behavior in Yeast and Microalgae

  • Oh, Soojung;Kim, Jangho;Ryu, Hyun Ryul;Lim, Ki-Taek;Chung, Jong Hoon;Jeon, Noo Li
    • Journal of Biosystems Engineering
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    • v.39 no.3
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    • pp.244-252
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    • 2014
  • Purpose: The development of an efficient in vitro cell culture device to process various cells would represent a major milestone in biological science and engineering. However, the current conventional macro-scale in vitro cell culture platforms are limited in their capacity for detailed analysis and determination of cellular behavior in complex environments. This paper describes a microfluidic-based culture device that allows accurate control of parameters of physical cues such as pressure. Methods: A microfluidic device, as a model microbioreactor, was designed and fabricated to culture Saccharomyces cerevisiae and Chlamydomonas reinhardtii under various conditions of physical pressure stimulus. This device was compatible with live-cell imaging and allowed quantitative analysis of physical cue-induced behavior in yeast and microalgae. Results: A simple microfluidic-based in vitro cell culture device containing a cell culture channel and an air channel was developed to investigate physical pressure stress-induced behavior in yeasts and microalgae. The shapes of Saccharomyces cerevisiae and Chlamydomonas reinhardtii could be controlled under compressive stress. The lipid production by Chlamydomonas reinhardtii was significantly enhanced by compressive stress in the microfluidic device when compared to cells cultured without compressive stress. Conclusions: This microfluidic-based in vitro cell culture device can be used as a tool for quantitative analysis of cellular behavior under complex physical and chemical conditions.

Isolation and Characterization of Mucinase Complex Secreted from Vibrio parahaemolyticus

  • Jun, In-Joon;Kim, Yoon-Hee;Kim, Min-Jeong;Hwang, Ho-Soon;Lee, Tae-Ho;Cha, Jae-Ho
    • Journal of Microbiology and Biotechnology
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    • v.13 no.5
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    • pp.731-737
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    • 2003
  • Mucinase complex from V. parahaemolyticus ATCC 17802 was purified 6-fold with 0.4% yield by two sequential steps of Q-Sepharose and Superdex 200HR column chromatographies. Partially purified mucinase complex showed at least 8 times higher mucin-degrading activity than the culture filtrates. The mucinase complex also showed gelatin-and-casein-hydrolyzing activities, which demonstrates that the protein is a complex compound containing several proteases. The optimum pH and temperature of partially purified mucinase complex for mucin degradation was 8.0 and $35^{\circ}C$, respectively. The partially purified mucinase complex showed high cytotoxic activity on vero cells when examined by MTT assay and microscopic observations. Cytotoxicity was significantly increased in proportion to the concentration of the mucinase complex. Mouse experiments revealed that the jejunum, ileum. and large intestinal tissues were damaged by the injection of the mucinase complex. In particular, the reduction of the goblet cells in the large intestine was remarkable. Collectively, these data suggest that the mucinase complex partially purified from V. parahaemolyticus ATCC 17802 contributes to the adhesion and invasion of V. parahaemolyticus into the host intestinal tract.

Relationship between morphology and viscosity of the main culture broth of Cephalosporium acremonium M25

  • Kim Jong Chae;Lim Jung Soo;Kim Jung Mo;Kim Chongyoup;Kim Seung Wook
    • Korea-Australia Rheology Journal
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    • v.17 no.1
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    • pp.15-20
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    • 2005
  • In this study, the relationship between morphology and viscosity of the main culture broth of Cephalosporium acremonium M25 was investigated in a 2.5 L bioreactor. The differentiation of C. acremonium M25 showed a complex pattern during the main culture. The morphological changes of C. acremonium M25 were related to the rheological properties of the culture broth and it was well agreed with the power law model. As a result of rheology study, it was found that rheological properties of the main culture broths of C. acremonium M25 in bioreactor were closely related to morphological changes. Also, fractal dimension fairly predicted morphological and rheological changes in the main culture broth.

A Study for Contemporary Fashion Trend in Extended Cultural Conception (확장문화개념에서의 90년대 유행 Fashion의 경향에 대한 연구)

  • 이은영
    • The Research Journal of the Costume Culture
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    • v.5 no.4
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    • pp.54-67
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    • 1997
  • Now, this time we regarde as daylife is a part of culture in novelty view of modern culture study. Specially, we can see terms about style surfing supermarket style through visulization process for critic, combination, reconstruction, of modernism, that is post modernism. Not new style show up any more but displayed union of past style history complex, slices of decoration series. A designer group called as memphis, they designed such like that. Our view for fashion could be new in the technology, mixed media, cyber situation is stimulated us and accepted in extened concept of culture. In this study, I approched as a view of streetism cyber punkism haute couture Romanticism linked extension concept of culture. Haute couture fashion has the most historical, and constructive and decorative aspects, and regarded as principle of construction of deconstruction. And this season trend is romantic & emotional image are complexed.

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A Study on the Influence of R&D Organizational Culture to Organizational Commitment and Organizational Citizenship Behavior In Small and Medium Enterprises. (중소기업의 R&D조직문화가 조직몰입과 조직시민행동에 미치는 영향에 관한 연구)

  • Lee, Sun-Kyu;Lee, Da-Jung;Lee, Sang-Rok;Jung, Jae-Kyu
    • Journal of Digital Convergence
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    • v.7 no.4
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    • pp.101-115
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    • 2009
  • This paper aims to examine the impact of R&D organization culture(diversity, autonomy, redundancy and connectivity) to Organizational Commitment and Organizational Citizenship Behavior in Information Technology Companys. Hypotheses were tested by surveying 250 employees at R&D Gumi Industrial Complex. The findings of research are as follows : First, three factors of R&D organizational culture had a significant positive effect on the organizational commitment except redundancy. Second, two factors of organizational culture in R&D organizational culture had a significant positive effect on the organizational citizenship behavior except autonomy and redundancy. it is shown reliable criterion to effective organizational management in small and medium enterprises.

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Digital Competence As A Component Of Professional And Information Culture Of A Teacher

  • Kharlamov, Mykhailo;Sinelnikov, Ivan;Lysenko, Vladyslav;Yakobenchuk, Nazar;Tkach, Anna;Honcharuk, Оlena
    • International Journal of Computer Science & Network Security
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    • v.21 no.7
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    • pp.169-172
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    • 2021
  • Based on the scientific and pedagogical analysis of the theory and experience of teaching computer science disciplines, the didactic mechanism for ensuring the continuity of the average (full) general and higher professional education of economists for practical implementation innovative technology of personal experience foundation. The pedagogical conditions for the formation of information competence, including laboratory, design, research work, the use of active teaching methods for acquiring management skills in production and activities of the enterprise. An indispensable requirement for the conditions for the implementation of basic of educational programs is the assessment of competencies. With this the goal was to develop criteria and levels of formation information competence of future economists and carried out complex diagnostics.