• Journal of Microbiology and Biotechnology
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• v.29 no.3
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• pp.382-391
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• 2019

Many poultry eggs are discarded worldwide because of infection (i.e., avian flu) or presence of high levels of pesticides. The possibility of adopting egg yolk as a source material to produce polyhydroxyalkanoate (PHA) biopolymer was examined in this study. Cupriavidus necator Re2133/pCB81 was used for the production of poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) or poly(3HHx), a polymer that would normally require long-chain fatty acids as carbon feedstocks for the incorporation of 3HHx monomers. The optimal medium contained 5% egg yolk oil and ammonium nitrate as a nitrogen source, with a carbon/nitrogen (C/N) ratio of 20. Time course monitoring using the optimized medium was conducted for 5 days. Biomass production was 13.1 g/l, with 43.7% co-polymer content. Comparison with other studies using plant oils and the current study using egg yolk oil revealed similar polymer yields. Thus, discarded egg yolks could be a potential source of PHA.

• Proceedings of the KOSOMBE Conference
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• v.1995 no.11
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• pp.7-9
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• 1995

• Computers and Concrete
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• v.30 no.1
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• pp.1-8
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• 2022

The basic purpose of the current study is to compute the numerical analysis of heat source/sink for Darcy-Forchheimer three dimensional nanofluid flow with gyrotactic microorganism by rotatable disk via porous media under the slip conditions. Due to nanoparticles, random and thermophoretic motion phenomenon occurs. The governing mathematical model is handled numerically by shooting method. Additionally, the characteristics of velocities, mass, heat, motile microorganisms and associated parameters are thoroughly analyzed via plots and tables. Different physical parameters like Forchheimer number, slip parameters like velocity, porosity parameter, Prandtl number, Brownian number, thermophoresis parameter, heat sink/source parameter, bioconvected Rayleigh number, buoyancy parameteron dimensionless velocities, temperature. Approximate values of Sherwood microorganism are analyzed.

• Proceedings of the KSMRM Conference
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• 2000.11a
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• pp.67-67
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• 2000

• 한국약용작물학회:학술대회논문집
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• 2009.05a
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• pp.225-226
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• 2009

• 한국약용작물학회:학술대회논문집
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• 2009.05a
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• pp.251-252
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• 2009

• Journal of Engineering Education Research
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• v.11 no.3
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• pp.44-53
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• 2008

This paper examined the educational objectives of selected colleges of engineering in Korea and other countries such as the USA, Canada, Australia, New Zealand, Japan, and Hong Kong. Among the common educational objectives of the colleges of engineering in Korea are the supply of manpower with professional abilities, an education to enhance the basic competence of engineers, and the equipment of high-level educational environments for quality engineering education. These emphases are in line with the global trends shown in the cases of various countries, where "leadership" and "innovation" are given much weight, and qualities such as "creativity", "specialty", and "service" are stressed. The analysis on the educational objectives of the selected colleges of engineering listed in this study may serve as a substantial basis for setting future goals and making decisions for quality engineering education in the colleges of engineering.

• Geomechanics and Engineering
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• v.2 no.2
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• pp.157-160
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• 2010

• Proceedings of the KOSOMBE Conference
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• v.1990 no.11
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• pp.82-85
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• 1990

• Proceedings of the KSMRM Conference
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• 1999.11a
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• pp.35-35
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• 1999