• Title/Summary/Keyword: Science culture

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Cytotoxicity of T-2 Toxin on Primary Cultures of Rat Hepatocytes

  • Kim, Hwan-Mook;Kim, Byung-Sam;Choe, Suck-Young;Yang, Kyu-Hwan
    • Toxicological Research
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    • v.4 no.1
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    • pp.37-45
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    • 1988
  • Primary cultures of adult rat hepatocytes were used to study in vitro cytotoxic effects of T-2 toxin on liver cells. When T-2 toxin was added to the culture, a significant depression of the hormonal induction of ${\alpha}$-aminoisobutyric acid (AIB) uptake and tyrosine aminotransferase (TAT) activity was observed. However, T-2 toxin did not affect the uptake of ouabain into hepatocytes. Protein synthesis was inhibited by T-2 toxin, but RNA synthesis was not severely affected. The inhibitory effects of T-2 toxin on protein synthesis was diminished rapidly with culture time and the hepatocytes culture maintained control level of protein synthesis within 24 hrs.

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Experience of Theory and Practice of the Process of Implementing Information Technologies in the Educational Environment

  • Melnyk, Yaroslav;Drapak, Halyna;Sverdlyk, Zoriana;Tsilyna, Maryna;Varenko, Volodymyr;Boichuk, Nelia
    • International Journal of Computer Science & Network Security
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    • v.21 no.4
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    • pp.75-79
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    • 2021
  • The article covered theoretical aspects use of information and communication technologies in teaching. Information and communication technologies are technologies that allow you to search, process and assimilate information from various sources, including the Internet. This is the presentation of information in electronic form, its processing and storage, the use of the computer, a variety of programs. The use of information and communication technologies in the work of a student gives an increase in motivation for learning; increased cognitive interest; evaluate their learning activities, identify the problems of their own educational activities; the formation of cognitive independence of students.

STUDIES ON THE ANTHER CULTURE OF CROP PLANTS (약배양에 관한 연구)

  • Chang-Yawl Harn
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.7 no.1
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    • pp.161-165
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    • 1969
  • Since Guha and Maheshwari's works on the induction of haploid plant from the cultured anther of Datura innoxia an her culture has become a big topic among geneticists and breeders. Presen paper is the summarized report on the anther culture method based on the author's recent researches.

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The Effect of Safety Culture on Job Satisfaction and Organizational Committment - Mediation effect of Organizational Trust- (조직의 안전문화에 대한 인식이 개인의 직무만족, 조직몰입에 미치는 영향 - 조직신뢰의 매개효과-)

  • Lee, KyungJae;Song, GwangSun
    • Journal of the Korea Safety Management & Science
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    • v.15 no.3
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    • pp.71-81
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    • 2013
  • The purpose of this paper is to examine the effect of safety culture on job satisfaction and organizational commitment and mediation effect of Organizational trust between independent variable and two dependent variables. Based on the responses from 290 employees, the results reveals ; 1) Organizational safety culture has a positive effect on the job satisfactions and organizational safety culture effect positively on the organizational commitment 2) Organizational trust mediates the relationships between safety culture and job satisfaction. 3) Organizational trust mediates the relationships between safety culture and organizational commitment.

Composition of Culture Medium and Culture Conditions for In vitro Culture of Rice Panicle

  • Lee, Jin-Ho;Lee, Ho-Jin
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.45 no.1
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    • pp.32-37
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    • 2000
  • The in vitro culture of rice panicles is a culturing technique only panicle without other organs in culture solution containing organic substance, so that would be useful to study how assimilate supply affects grain development and maturation. To find the optimum stage for in vitro culture, rice panicles grown in greenhouse were sampled periodically after anthesis and cultured in nutrient medium. The panicles older than 1 weeks after anthesis had produced normal grains. Grain-filling was apparently dependent upon sucrose concentration (8-12 %) in medium, but not affected by nitrogen concentration supplied with glutamine. As far as rice panicle was supplied with sucrose and N in nutrient medium, grains continued accumulation of dry matter and maturation regardless to light condition. Considerably, grain-filling was improved when panicles were positioned horizontally inside flask, so that each grain was partially submerged to nutrient medium.

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The relationship between organizational culture and service quality, and the moderating effect of tenure (조직문화가 서비스품질에 미치는 효과 및 재직기간의 조절효과)

  • Ahn, Kwan-Young
    • Journal of the Korea Safety Management & Science
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    • v.12 no.4
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    • pp.215-222
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    • 2010
  • This paper reviewed the relationship between organizational culture and service quality, and the moderating effect of tenure in service business. Based on the responses from 586 employees, the results of multiple regression analysis showed that rational culture and affiliation culture have positive relationships with all service quality factors. The results of moderating analysis showed that rational culture has more positive relationships with tangibleness, reliability, responsiveness, and empathy in which tenure is longer. Also progressive culture has more positive relationship with empathy in which tenure is longer.