• 제목/요약/키워드: Mass culture

검색결과 153건 처리시간 0.119초

담수산 농축 Chlorella와 빵효모의 혼합 공급 비율에 따른 담수산 Rotifer, Brachionus calyciflorus Pallas의 대량배양 (Different Combinations of Condensed Chlorella and Baker′s Yeast for Mass Culture of the Freshwater Rotifer, Brachionus calyciflorus Pallas)

  • 이균우;박흠기;박기명
    • 한국양식학회지
    • /
    • v.13 no.2
    • /
    • pp.147-152
    • /
    • 2000
  • 본 연구는 담수산 rotifer, Brachionus calyciflorus의 경제적인 대량배양을 위해서 담수산 농축 ChloreIla와 빵효모 혼합 공급 비율에 따른 효과를 조사하였다. 담수산 rotifer의 최고밀도와 성장은 Chlorella 공급 비율이 높을수록 빠르게 나타났다. Rotifer 밀도가 증가할 수록 배양수의 용존산소량은 감소하였고 이온화 되지 않은 암모니아량도 증가하였다. 특히, Chlorella 100% 단독구에서 용존산소량이 0.2~0.3 ppm으로 낮아지고 이온화되지 않은 암모니아가 14.1~29.6 ppm으로 급격히 증가함에 따라 rotifer 밀도는 급격히 감소하는 경향을 보였다. 따라서 담수산 rotifer를 안정적으로 대량배양하기 위해서는 용존산소가 0.3 ppm이상, 이온화되지 않은 암모니아가 14 ppm 이하로 유지하여야 할 것으로 판단된다. 먹이의 공급 비율에 따른 rotifer의 생산비는 ChloreIla단독구에서 가장 높았다. 그러나 Chlorella 70%와 빵효모 30%를 혼합 공급하면 rotifer 최고밀도에 있어서 Chlorella 단독구와 유의적인 차이가 나타나지 않으면서 Chlorella 100%단독구보다 생산비가 1.8배 낮기 때문에 Chlorella 70%와 빵효모 30%를 혼합 공급하는 것이 가장 경제적이고 안정적인 먹이비율인 것으로 판단된다.

  • PDF

Burkholderia pyrrocinia LA101 선발 (Selection of Burkholderia pyrrocinia LA101)

  • 나정우;장명준;안승원;박윤진;조용구
    • 한국환경과학회지
    • /
    • v.29 no.5
    • /
    • pp.435-443
    • /
    • 2020
  • The purpose of this study was to investigate eco-friendly measures to manage major diseases which cause heavy economic damages to ginseng. Morphological, physicochemical, and molecular biological species identification was carried out after isolating useful antagonistic bacteria from ginseng fields. In addition, optimal conditions for mass culture were established, and he efficacy of the bacteria in the prevention of the diseases was verified in the field. The results showed that about 150 bacteria were extracted from 150 ginseng fields in the whole county. Among them, B. pyrrocinia LA101 was finally selected, which had a strong antagonistic potency against Alternaria panax, Botrytis cinerea, Rhizoctonia solani, and Cylindrocarpon destructans on agar media. The B. pyrrocinia LA101 is a baculiform gram-negative bacterium identified as Burkholderia pyrrocinia according to results from an API(Analytical Profile Index) kit, 16S rRNA, and gyrase gene sequencing analysis. It was donated to the microbe bank of the Agricultural Genetic Resources Center at the National Academy of Agriculture Science under the Rural Development Administration on September 28, 2011 (Donation No. KACC91663P). A patent for the mass culture technology was granted in August 2012 (Patent No. 10-1175532).

기수산 요각류 Paracyclopina nena의 배양을 위한 최적 미세조류의 선별 (Selecting the Optimal Microalgal Species for Culturing the Brackish Water Copepod Paracyclopina nana)

  • 민병희;박흠기;이균우;허성범
    • 한국수산과학회지
    • /
    • v.40 no.1
    • /
    • pp.8-15
    • /
    • 2007
  • This study selected the optimal microalgal species for mass culture of a brackish water copepod Paracyclopina nana. Fifteen microalgal species were tested to examine nauplius production and the survival and maturation of brood females. Total and daily nauplius production were highest in P. nana fed Tetraselmis suecica followed Isochrysis galbana, Dunaliella tertiolecta, and Phaeodactylum tricornutum. With a monospecific microalgal diet, the total density was highest with P. nana fed I. galbana, at 63.3 inds./mL. With a mixed microalgal diet, the total density of P. nana fed T. suecica+I. galbana was higher than that fed other mixed diets, although there was no difference between a monospecific diet of I. galbana and a mixed diet of T. suecica+I. galbana. Examining the fatty acid composition of P. nana, the eicosapentaenoic acid (EPA) was highest in P. nana fed T. suecica at 5.4% while the docosahexaenoic acid (DHA) content was highest I. galbana diet at 31.9%. Although no DHA was detected in T. suecica, P. nana fed this microalgal species had a high DHA composition of 24.3%. We suggest that the optimal microalgal species for the mass culture of P. nana is T. suecica which is easy to culture on masse and has a high linolenic acid content.

문화산업의 서울, 부천시 비교 접근방법연구 (A Study on Regional Approaches in Seoul city & Bucheon city of the Culture Industry)

  • 전태석
    • 한국컴퓨터정보학회논문지
    • /
    • v.10 no.5
    • /
    • pp.301-312
    • /
    • 2005
  • 본 논문에서는 문화산업이 국가경쟁력의 새로운 척도로 부각되는 가운데 국가단위에서 지역도시단위로 옮아가고 있고 지역 특성화 방안으로 문화산업 즉, 엔터테인먼트산업에 대한 지역 및 주민의 요구가 크고 다양하게 증대되고 있다. 문화산업의 도시별 차이점을 고찰함으로서 대 . 중소도시별 상관관계와 문화산업의 접근방법에 따른 이해와 이용의 차이를 분석하였고 대도시와 중소도시에 따른 변화나 문화정책도 연구목적으로 하였다. 연구결과에서 첫째, 문화가 변화함에 따라 문화산업이 변화하는 것으로 나타났다. 둘째, 사회적 여건에 따라 도시별 차이점을 발견할 수 있었는데 대도시에선 대중문화 부상이 영향을 미치는 요인으로 나타났으며 중소도시에서는 대중문화 부상이 영향을 미치고 있으나 문화생활화도 중요시됨을 도출 할 수 있었다. 셋째, 경제적인 여건에 따라 도시별 차이점을 발견할 수 있었는데 대도시에선 문화유통체계다양화와 문화상품화, 문화클러스터화가 고루 영향을 미치는 요인으로 나타났으며 중소도시에서는 문화유통체계다양화와 문화상품화가 영향을 미치고 있으나 문화 클러스터화에 대해 영향을 못 미치는 것으로 나타났다.

  • PDF

여성잡지 의류광고에 나타난 이데올로기 연구 (A Study on the Ideologies of the Clothing Advertisements in Women's Monthly Magazines)

  • 김인숙;이명희
    • 복식
    • /
    • v.37
    • /
    • pp.211-230
    • /
    • 1998
  • Advertisements provide consumers with in-formation and knowledge about products and help a society to sustain homogeneity by actively reflecting important characteristics of mass culture. Yet this reflection is a selective and purposeful representation by the party of the fashion manufactures and carries the intention of stimulating and augmenting desire for commodities aiming to perpetuate capitalism. This study understood this selective reflection of mass culture by advertisements as a feature of hegemonic struggle between/fashion business and consumers and defined the values selected by advertisements as ideologies supporting the consumption ideology of capitalism. The purpose of this study was to examine the contents of the ideologies expressed in the clothing advertisements in women's magazines to persuade consumers into consumption. The method of study was mainly qualitative with subsidiary citations from the results of content analysis. The objects of analysis were clothing advertisements in 1996 issues of CeCi and Woman Sense, which were identified as the two most popular women's monthly magazines. The ideologies identified were ideologies concerning (1) Self Identity, (2) Sensibility, (3) Sex Role, (4) Globalism, (5) Youth, (6) Leas-ure and Pleasure. Repeated and insisted as natural and true, there values were proposed to be believed as common senses and studies re-port that values of advertisements are ac-cepted as more readily as they are more unreasonable, and the acts and behaviors expres-sed within advertisements are often imitated in real life situations. Therefore, it is highly probable that these values emphasized within advertisements are enacted in thoughts and behaviors of consumers' real life. Accordingly the author suggests that critical interpretation of advertisements is seriously required to fully understand the commodity ridden post industrial society of today and to lead a subjective life within it.

  • PDF

흰굳음병균(Beauveria bassiana) 포자의 대량배양을 위한 고체배지의 개발 (Development of Solid Culture Media for the Mass Production of Beauveria bassiana Conidia)

  • 서종복;진병래
    • 한국잠사곤충학회지
    • /
    • v.38 no.1
    • /
    • pp.31-35
    • /
    • 1996
  • 흰굳음병균(B. bassiana)을 이용하여 효과적인 진균살충제 개발을 위해, 진균의 대량배양 체계에서 가장 중요한 고체배지를 저가의 농가부산물인 밀기울을 이용하여 조제하고, 고체배지의 물성, 수분, 온도 조건, 고체배지의 형태 및 크기에 따른 B. bassiana 포자의 성장을 조사하였다. 그 결과, 고체배지는 powder 형보다 pellet 형이 포자의 성장에 효과적이었으며, 고형제가 첨가된 P-II 배지보다는 첨가되지 않은 P-I 배지가 효율적이었다. 또 수분 요구량은 배지 : 물 (W/V)의 비율이 4:2 조건 이상, 온도조건은 2$0^{\circ}C$$25^{\circ}C$에서 높은 성장율을 보여주었다. 그리고 고체 배지의 형태에 따른 포자의 생산성은 S형 P-I 고체배지 (직경 3mm)에서 효과적이었다. 이상의 결과, S형 P-I 고체배지는 흰굳음병균 포자의 대량배양에 경제적이고, 효율적으로 이용될 수 있을 것이다.

  • PDF

Screening of Different Media and Substrates for Cultural Variability and Mass Culture of Arthrobotrys dactyloides Drechsler

  • Kumar, D.;Singh, K.P.;Jaiswal, R.K.
    • Mycobiology
    • /
    • v.33 no.4
    • /
    • pp.215-222
    • /
    • 2005
  • Variability in growth and sporulation of five isolates of Arthrobotrys dactyloides was studied on five agar, 6 bran and 5 grain media. Potato dextrose agar (PDA) supported maximum growth of isolate A, C and E, while growth of isolate Band D was significantly lower on this medium. On Czapek's agar and yeast glucose agar media the differentiation in the isolates in relation to growth was poor than PDA. The other two media showed much poorer differentiation. On Czapek's agar medium, sporulation was recorded in isolate B only, whereas other isolates showed rare sporulation. Among the bran media, pea bran agar medium supported maximum growth of all the isolates except isolate B. Gram and rice bran agar media were next best. However, the growth of isolate B on the gram bran agar medium was more or less equal as other isolates. On pigeon pea bran agar medium, isolate E failed to grow while other isolates recorded poor growth. On lentil bran agar medium, only isolate Band D recorded little growth, whereas other isolates failed to grow. All the isolates recorded good sporulation on bran agar media except pigeon pea and lentil bran agar media. The grain agar media supported moderate to very good growth of all the isolates. In general isolate B remained slow growing on these media except gram grain and sorghum grain agar media on which growth of this isolate was comparable to other isolates. Sporulation in general, was good on all the grain agar media. Among different substrates screened, barley grain and pea bran were found superior to others for mass culture of isolate A of A. dactyloides.

현대패션에 나타난 다원주의적 표현성 (A Study on Expression of Pluralism in Contemporary Fashion)

  • 김지연;이경희
    • 한국의류산업학회지
    • /
    • v.6 no.1
    • /
    • pp.9-16
    • /
    • 2004
  • The purpose of this study is to analyze expression of pluralism in contemporary fashion. This study has three parts. They are to understand the concept of pluralism, to find the fashion environments of pluralism in terms of politics, economics, sociality, culture, science, and art, and to analyze expression of pluralism in contemporary fashion. The concept of pluralism in contemporary fashion is the diversity and compounds of fashion images. The environments of pluralism in contemporary fashion are multinational economic system, virtual world of internet. mass-culture and postmodern art. And expression of pluralism in contemporary fashion is analyzed into publicity. Publicity is expressed by using things of common lifestyle and the past that people used to and are well-known. Horizontality is expressed by coordination of male-female facts and property-poorness without high or low concept. Multi-nation is expressed by mixing various kind of national characteristics and Virtuality is expressed by layering and collaging complex facts that are not connected each other.

Effects of pH and Light Irradiation on Coenzyme Q10 Production Using Rhodobacter sphaeroides

  • Jeong, Soo-Kyoung;Dao, Van Thingoc;Kien, Ngyuen;Kim, Joong-Kyun
    • Fisheries and Aquatic Sciences
    • /
    • v.11 no.4
    • /
    • pp.219-223
    • /
    • 2008
  • To increase the level of $CoQ_{10}$ production in mass culture, the effects of pH and light irradiation on $CoQ_{10}$ production by Rhodobacter sphaeroides were investigated in a 1-L bioreactor. $CoQ_{10}$ production was growth-associated, and the highest production of $CoQ_{10}$ (1.69 mg/g dry cell) was obtained under uncontrolled pH: this production was 1.7 times higher than that obtained at controlled pH 7. Therefore, pH was a key factor affecting $CoQ_{10}$ production. The effect of light irradiation on $CoQ_{10}$ production was negligible. This result offers an advantage for mass production of $CoQ_{10}$.

대중영상매체 속에 나타난 공간연출 특성에 관한 연구 (A study on the space production special quality that in mass reflex media)

  • 지홍근;김봉재;신홍경
    • 한국실내디자인학회:학술대회논문집
    • /
    • /
    • pp.121-124
    • /
    • 2002
  • Mass culture is product of media technology. We are absorbing and surround in optical image which reflex medium emits by night and day continually specially and live culture and information produced infinitely through mass media. People discharging in main living room now to remote control a television manufacture because carrying out move freely and is preoccupied with object of interest that have been spread in a television, and assimilate all image like sponge. Reflex medium contacted habitually every day whether do not want even if want can do that populace cultural personality is much stronger as subject that make actuality of processing.

  • PDF