Hak Jun Lee

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An improved technique for long-term culture of rice caryopses is necessary for physiological and genetic studies. Panicles of three rice (Oryza sativa) cultivars `Lemont', `Gummo-byeu' and `Hwasung-byeu' were cultured in liquid media with combinations of light versus dark, panicle position, nitrogen level (5-40 mM), and sucrose level (29–351 mM). Grain(More)
To broaden the range of application of electron beams, low-power field emitters are needed that are miniature and light. Here, we introduce carbonized cork as a material for field emitters. The light natural cork becomes a graphitic honeycomb upon carbonization, with the honeycomb cell walls 100-200 nm thick and the aspect ratio larger than 100, providing(More)
The three dimensional (3-D) poly(trimethylenecarbonate-co-ε-caprolactone)-block-poly(p-dioxanone) scaffold was made using a wet electrospinning method and its application as a tissue engineered matrix was evaluated for bone regeneration. The scaffold was highly porous (90%) and interconnected among pores. Under scanning electron microscopy, the cells of the(More)
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