• Title/Summary/Keyword: hand culture

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Effect of Agitation, Aeration and Scale-up on Mycelial Morphology During Liquid Culture of Ganoderma lucidum (영지의 액체배양 중 균사형태에 미치는 통기.교반의 영향 및 Scale-up)

  • Lee, Hak-Su;Lee, Ki-Young;Choi, Sang-Yun;Lee, Shin-Young
    • KSBB Journal
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    • v.26 no.4
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    • pp.357-364
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    • 2011
  • This study was carried out to investigate the effects of agitation, aeration and scale-up on the mycelial growth, exo-polysaccharide (EPS) production, and mycelial morphology in the liquid culture of Ganoderma lucidum. A correlation between roughness and operating variables was also studied to scale-up the liquid culture of G. lucidum in a jar fermenter. When the agitation speed or aeration rate increased, the morphological form was changed from rough pellet to smooth pellet form. Increase of the agitation and aeration reduced the mycelial roughness. On the other hand, in the case of pellet size, it was not affected by aeration. The higher EPS production was obtained at approximately 17% of roughness and mycelial pellet size of 3~5 mm. The morphology at each fermenter was closely correlated with kLa value, and it was found that similarity of morphology would be used as a criteria of scale-up for liquid culture of G. lucidum.

Optimization of In Vitro Murine Embryo Culture Condition based on Commercial M16 Media

  • Lee, Soo Jin;Bae, Hee Sook;Koo, Ok Jae
    • Journal of Embryo Transfer
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    • v.30 no.4
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    • pp.315-317
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    • 2015
  • In vitro culture of murine embryos is an important step for in vitro production systems including in vitro fertilization and generations of genetically engineered mice. M16 is widely used commercialized culture media for the murine embryos. Compared to other media such as potassium simplex optimization medium, commercial M16 (Sigma) media lacks of amino acid, glutamine and antibiotics. In the present study, we optimized M16 based embryo culture system using commercialized antibiotics-glutamine or amino acids supplements. In vivo derived murine zygote were M16 media were supplemented with commercial Penicillin-Streptomycin-Glutamine solution (PSG; Gibco) or MEM Non-Essential Amino Acids solution (NEAA; Gibco) as experimental design. Addition of PSG did not improved cleavage and blastocyst rates. On the other hand, cleavage rate is not different between control and NEAA treated group, however, blastocyst formation is significantly (P<0.05) improved in NEAA treated group. Developmental competence between PSG and NEAA treated groups were also compared. Between two groups, cleavage rate was similar. However, blastocyst formation rate is significantly improved in NEAA treated group. Taken together, beneficial effect of NEAA on murine embryos development was confirmed. Effect of antibiotics and glutamine addition to M16 media is still not clear in the study.

유사 생합성 경로를 가진 Streptomyces sp.의 혼합배양을 이용한 Doxorubicin 생합성

  • Choi, Yun-Hwa;Hong, Young-Soo;Lim, Jai-Yun;Lee, Jung-Joon
    • Microbiology and Biotechnology Letters
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    • v.25 no.6
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    • pp.580-585
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    • 1997
  • We selected two mutants namely strain D5 and Nu23 by mutagenesis of anthracycline producing Streptomyces: the former is an $\varepsilon$-rhodomycinone overproducing mutant selected from Streptomyces sp. C5, a baumycin producer and the latter, a blocked mutant of early pathway for doxorubicin biosynthesis obtained from Streptomyces peucetius ATCC 27952, a doxorubicin producer. The mutant strain Nu23 does not produce anthracycline metabolites but retains the most of enzyme activities converting aklavinone to doxorubicin and the mutant strain D5 produced $\varepsilon$-rhodomycinone at a level of 150 $\mu$g/ml. These strains were grown separately in NDYE medium and each was mixed at day 3 by equal volume of culture broth but the quantity of doxorubicin produced was far below an estimation based on the level of $\varepsilon$-rhodomycinone normaly produced by the strain D5. On the other hand doxorubicin was reached at maximum level after 4 days in the mixed culture condition which was composed of culture broth of strain D5 grown for 6 day and that of strain Nu23 grown for 3 day. It was turned out that the growth of mutant strain D5 was inhibited by the accumulation of daunorubicin and doxorubicin in mixed culture broth, which cause the limitation of $\varepsilon$-rhodomycinone.

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What is the Factors Influencing on Performance Satisfaction and Revisit to Performance Hall in Korea and Japan? (한.일 공연 만족과 공연장 재방문에 영향을 미치는 요인 분석)

  • Kwak, Jun-Sik;Moon, Jae-Young
    • The Journal of the Korea Contents Association
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    • v.17 no.2
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    • pp.47-54
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    • 2017
  • Today, increasing consumption of arts and culture, many people are visiting theater or concert hall. moreover K-culture led to boom in arts and culture but previous researches focused on analysis of culture contents on the other hand satisfaction of performance hall and revisit intention is minuscule. Therefore, this research investigates satisfaction of performance and revisit intention of factors influencing Korean and Japanese audience. As a results, performance facilities and customer reception service positive influence on revisit intention to Korean audiences but customer reception service positive influences on revisit intention to Japanese audiences beside performance satisfaction indirect effect on revisit intention as well.

Poliovirus Decrease Effect by Activated Sludge Microbes (활성슬러지 구성 미생물에 의한 폴리오바이러스의 감소 효과)

  • Kim, Tae-Dong;Choi, Dong-Hyuk
    • Journal of Environmental Health Sciences
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    • v.32 no.4 s.91
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    • pp.336-341
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    • 2006
  • The biological wastewater treatment system is known to have an important role in reducing the quantify of enteric virus in water environments. To clarify the roles of activated sludge microbes in decreasing the virus infectivity, the behavior of the virus in bacteria, protozoa, and metazoa was examined by pure or mixed culture system using poliovirus type 1(Lsc, 2ab strain). In the bacterial culture systems, the virus infectivity in the liquid phase decreased by a reversible adsorption of the virus to the bacteria or bacterial flocs. On the other hand, in the protozoa and the metazoa culture systems using T. pyriformis and P. erythrophthalma, respectively, with a variety of bacterial strains as prey, the main virus decrease mechanism of reversible adsorption in early stage was changed to irreversible predation, which was not eluted in this study. The virus decrease was more effective in the P. erythrophthalma culture system, which had high predation and floc forming abilities. However, in the mixed culture system of Z. ramigera and P. erythrophthalma, the more rapid reversible adsorption of virus to Z. ramigera flocs preceded the irreversible predation of P. erythrophthalma.

Optimization of Culture Conditions for Production of Pneumococcal Capsular Polysaccharide Type IV

  • Kim, S.N.;Min, K.K.;Choi, I.H.;Kim, S.W.;Pyo, S.N.;Rhee, D.K.
    • Archives of Pharmacal Research
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    • v.19 no.3
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    • pp.173-177
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    • 1996
  • The Pneumococcus, Streptococcus pneumoniae, has an ample polysaccharide (PS) capsule that is highly antigenic and is the main virulence factor of the organism. The capsular PS is the source of PS vaccine. This investigation was undertaken to optimize the culture conditions for the production of capsular PS by type 4 pneumococcus. Among several culture media, brain heart infusion (BHI) and Casitone based medium were found to support luxuriant growth of pneumococcus type 4 at the same level. Therefore in this study, the Casitone based medium was used to study optimization of the culture condition because of BHI broth's high cost and complex nature. The phase of growth which accomodated maximum PS production was exponential phase. Concentrations of glucose greater than 0.8% did not enhance growth or PS production. Substitution of nitrogen sources with other resources or supplementation of various concentrations of metal ion (with the exception of calcium, copper, and magnesium ions) had adverse effects on growth and PS production. On the other hand, low level aeration and supplementation of 3 mg/l concentration of asparagine, phenylalanine, or threonine were beneficial for increased PS production. The synergistic effect of all the favorable conditions observed in pneumococcal growth assays provided a two-fold cumulative increase in capsular PS production.

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The "Korean Turn" in Philippine Popular Culture: The Story So Far

  • Louie Jon A. Sanchez
    • SUVANNABHUMI
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    • v.16 no.1
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    • pp.15-38
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    • 2024
  • In this paper, I will pursue initial ideas I formulated in 2012 about the permeation of Korean influences in Philippine popular culture, particularly in the production of serialized TV drama/soap operas or the "teleserye" [tele for television + "serye" or series; thus, TV drama series]. I called the phenomenon the "Korean Turn" as I observed the emulation of Korean televisual drama (nowadays called K-Drama) modes and practices by local production through various means of cultural appropriation. This time, I will expand my exploration to other aspects of Philippine entertainment and other cultural practices. I will also update my observations on the continuing "Korean turn" in the teleserye. I will argue, on the one hand, about the success and soft power of hallyu or the "Korean wave" in the Philippines; and on the other, about Philippine culture's enduring ingenuity in its reception and repurposing of hallyu. Ideas to be yielded here will form part of a potential framework in understanding the dynamics of the interface between Korean and Philippine cultures, in the context of globalization. I assert that popular culture remains to be an undervalued field of inquiry, as far as these contexts are concerned.

The Latin American Culture in Fashion Designs in 2000's (2000년 이후 패션 디자인에 나타난 라틴 아메리카 문화)

  • Choi, Ho-Jeong
    • Journal of the Korean Society of Costume
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    • v.57 no.4 s.113
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    • pp.159-172
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    • 2007
  • For the study on the Latin American culture reflected in fashion designs since 2000, the applications of Latin American culture shown in the four major collections from 2000 S/S to 2005 F/W (110 pieces) and some African designers' collections (157 pieces) have been analyzed and compared in three categories - forms, patterns and accessories. First, in the formal application of traditional clothes, the traditional elements of Indio culture are utilized in both the four major collections (76.8%) and the Latin American designers' collection (77.1%). Quechquemitl, the traditional Indio clothes are utilized in various forms in the four major collections, while the Latin American designers adopt various forms of traditional clothes, such as quechquemitl, camisa and pollera. Second, in the textile design, the patterns from Indio's traditional textile design are utilized in both the four major collections (68.7%) and the Latin American designers's collections (5.6%). The remarkable difference between the Latin American designers and the western designers is that the former like to mix the simple and primitive Indio culture with the colorful Iberian culture, and to utilize various patterns of feather, which is an important symbol in the traditional culture, expressing tradition in the modern touch. On the other hand, the western designers change the primitive and handcraft feel of Indio patterns into colorful ones, or mix the colorful Spanish-style flower patterns with primitive and passionate feel. Third, simple and handcraft feel of Indio accessories are utilized in modern fashion in both the four major collections and the Latin American designers' collections. The most remarkable difference between the two group of designers' collections is that various feather patterns are used in Latin American designers' collection, while the accessories reminding of relics of Maya and Inca are widely used in the four major collections.

Female Marriage Immigrants' Information Awareness, Perception and Familiarity on Korean Food Culture by Personal Characteristics and Food Neophobia Degree (여성결혼이민자의 개인특성 및 푸드네오포비아 정도에 따른 한식에 대한 정보인지 수준 및 인식, 친밀도에 관한 차이 연구)

  • Jeong, Hee-sun;Yoon, Ji-young
    • Korean journal of food and cookery science
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    • v.32 no.2
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    • pp.233-243
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    • 2016
  • Purpose: This study aims to investigate and explain the influence of personal characteristics on female immigrants' perception and attitude towards the Korean food culture. Methods: Exploratory research was performed by conducting a self-administered survey. A purposive sampling method was used to recruit 289 participants to determine their level of information awareness, perception and familiarity with Korean food culture. Results: Female immigrants' mean FNS score was 3.70. FNS score decreased in women from Northeast Asia, women who received higher education, and in urban women. The level of information awareness of Korean Food culture was 3.47, which was above average. Women from Southeast Asia had a higher level of awareness about cooking methods and table setting. Females living in the countryside and those who had lived for more than 7 years in Korea had higher levels of information awareness than other groups. Women from Southeast Asia perceived that Korean food is spicy; on the other hand, women from Northeast Asia discerned that Korean food is pungent and is prepared scientifically. The neophilic group more positively recognized Korean foods based on taste and nutritional value than did the neophobic group. Subjects living in the countryside were more likely to evaluate nutritional value, scientific aspects and artistry higher. The research also found that the neophilic group and immigrants who had lived for more than 7 years in Korea were significantly correlated with the familiarity with Korean food culture. Conclusion: The findings provide an initial step towards developing a customized education program for female marriage immigrants to adapt and to become familiar with Korean food culture with a comprehensive understanding of personal traits for accepting a new food culture.

Velvetweaving today: A worldwide overview

  • Pickett, Barbara Setsu
    • The Research Journal of the Costume Culture
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    • v.21 no.3
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    • pp.452-456
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    • 2013
  • Velvet is a luxury cloth. In Fashion it dresses the Elite. In Interiors, it covers palace walls and upholsters elegant furniture. In every culture throughout its history velvet's sumptuous surfaces denotes luxury, status, power, privilege and wealth. My humble aim is to reveal the artisan in the art-to comprehend the mastery of weaving techniques, to understand the design principles, to study the everyday practice of the weavers at work. In the few ateliers that still weave silk velvet by hand, I have documented their processes and now want to share this knowledge with the broader textile community in hopes of expanding the appreciation of their art. I approach as a fellow weaver striving to learn the mechanics, the practical aspects that guide the work from initial idea to finished cloth. I leave the difficulties of establishing provenance and other important analyses to my more learned textile historian colleagues.