• Title/Summary/Keyword: Cultures

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Teaching Tolerance in School Education

  • Sasse, Werner
    • Cross-Cultural Studies
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    • v.20
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    • pp.203-210
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    • 2010

  • Tolerance education must be based on the fact that tolerance like democracy cannot be achieved once and for all. Students must learn to constantly watch political and cultural processes for negative developments. Tolerance for others' values and behaviour can be learnt by studying previous historiographical views. The basic attitude to be learnt is repect for other cultures - within one's own culture as well as foreign cultures.

Identification of Water Soluble Metabolites of Pentachlorophenol ( PCP ) in the Suspension Cultures of Soybean and Rice Cells;1. Metabolic Conversion of PCP to Glucose conjugates (대두(大豆) 및 벼 현탁배양(懸濁培養) 중 PCP 수용성대사물(水溶性代謝物)의 동정(同定);1. PCP glucose conjugates의 형성)

  • Kim, Pil-Je;Park, Chang-Kyu
    • Korean Journal of Environmental Agriculture
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    • v.11 no.3
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    • pp.215-223
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    • 1992

  • A metabolic study has been conducted to investigate the conversion of pentachlorophenol(PCP) to water soluble metabolites in soybean and rice cell suspension cultures as well as in intact rice plants. PCP in plant cells was found to be exclusively transformed into water soluble metabolites. The relative rate of the metabolic conversion of PCP in decreasing order was soybean cultures > rice cultures > rice plants. Also observed was that, the older the cultures grown, the lower the conversion rate was. Primary water soluble metabolites isolated from both the 5 day old soybean and 8 day old rice cells were specifically hydrolyzed only by ${\beta}$-glucosidic linkage specific glucosidase, suggesting that the metabolites are ${\beta}$-glucose conjugates. The amount of glucose conjugates was increased with increasing time of incubation of PCP up to 24 hr in both soybean and rice cultures; Thereafter, it was decreased progressively. Most of the glucose conjugates were further metabolized to more polar conjugates in cells, but a portion of them was excreted into the culture medium.

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Removal of Nitrogens and Phosphorus by Bacillus sp. CK-11 and Bacillus sp. CK-13 Isolated from Shrimp Farming Pond (새우양식장에서 분리한 Bacillus sp. CK-10과 Bacillus sp. CK-13에 의한 질소와 인의 제거)

  • Chun Jae-Woo;Ma Chae-Woo;Lee Sang-Hyun;Oh Kye-Heon
    • KSBB Journal
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    • v.20 no.2 s.91
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    • pp.116-122
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    • 2005

  • The feasibility of using bacterial cultures with the ultimate aim for the marine environmental clean-up was explored. The present study reports on the bacterial elimination of nitrogens and phosphorus by strains CK-10 and CK-13 isolated from shrimp farming pond. The strains were identified as genus Bacillus on the basis of BIOLOG test, and designated as Bacillus sp. CK-10 and Bacillus sp. CK-13, respectively. Removal of nitrogens $(NH_4^+,\;NO_2^-,\;or\;NO_3^-)$ or phosphorus $(PO_4^{-3})$ as single N or P source was studied with single cultures under aerobic conditions. Complete elimination of all nitrogens in the concentration range of $100-400{\mu}M$ was achieved in single cultures as well as co-cultures within the given incubation period. Similar results were obtained from the test cultures containing $125-599{\mu}M\;PO_4^{3-}$. Simultaneous removal of all N/P was monitored in the co-cultures. As the results, $400{\mu}M\;NH_4^+\;and\;NO_2^-$ were eliminated within 12hrs and $400{\mu}M\;NO_3^-\;and\;500{\mu}M\;PO_4^{-3}$ were completely disappeared within 36 hrs from the media. The work demonstrated that co-cultures improved the concurrent removal of N/P from the media.

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