Carbon foam composites containing hollow microspheres, reinforced by carbon nanotubes (CNTs) and montmorillonite (MMT), have been developed as the thermal insulation and EMI shielding layer. The effects of additive amounts of CNTs/ MMT on microstructure and properties of the carbon foam composites were investigated. Results showed that carbon foam composites had hierarchical porous structure, with CNTs and MMT being relatively uniformly dispersed in the composites. The addition of multiscale additives improved the mechanical, electromagnetic shielding effectiveness and thermal insulation properties of carbon foam composites. The composites containing 0.2 wt.% CNTs and 5 wt.% MMT, showed outstanding compressive strength, up to 8.54 MPa, increased by 116% to pure carbon foam. Their electromagnetic shielding effectiveness was as high as 65 dB, increased by 75%. Due to the hierarchical porous structure and MMT’s heat barrier effect, carbon foam composites presented remarkable thermal insulation properties. The minimum thermal conductivity was 0.45 W·m−1·K−1 at 800 °C. Their exceptional thermal protection can also be evidenced by ablation resistance under flame at 1000 °C. Therefore, such multifunctional carbon-based composites are ideal for use in thermal protection.
‘Hyowon 4’, a new medium maturing glutinous rice variety was developed by the rice breeding team of Pusan National University in 2013. This cultivar was derived from a cross between ‘Boseokchal’ and ‘Donna’ with good glutinous property. During F3~F8 generation, breeding lines were selected by a pedigree breeding method. As a result, the promising line (JS23-4-39-14-5-1-1-1) with good glutinous property was advanced and designated as the name of ‘SP 106’ in 2012. This variety headed on Aug. 15, which is 2 days later than ‘Dongjinchal’ in middle plane. The culm length and panicle length of this variety was 82.4 cm and 21.1 cm, respectively. This variety has about 13.9 tillers per a hill and 100 spikelets per a panicle. The ratio of ripened grain is about 92.0% and 1000-grain weight was 20.9 g in brown rice. The yield performance was 5.03 MT/ha in local adaptability test.
Goami 2 is now well known as its extinguishing endosperm characteristics - it is far from the wild type, Ilpum, a premium taste Korean japonica cultivar. The endosperm of Goami 2 is high in fat, protein, and indigestible carbohydrate contents. One of the most extraordinary endosperm characteristic of Goami 2 is high level of amylose content, even though the hulled rice (brown rice) is totally opaque. There have been many studies to address the unique physico-chemical properties and possible usages as a healthy and functional food ingredient, especially, the high-amylose rice had a positive effect on lowering the blood glucose response in obesity and type 2 diabetes. Genetic analysis by using 44 SSR markers, crude linkage map (3~5 anchor markers per chromosome) was then constructed based on the genotypes detected among 112 F2 progenies derived from Goami 2 / Milyang 23 showed that major chromosomal regions on Chromosome 2 responsible for the variation of amylose contents. M2-53 on Chromosome 2 explains the highest variation and this region has not been reported as a putative QTL for amylose contents yet. More closely markers for application to breeding program can be developed using MutMap or Re-sequence methods.