• Journal of the Korean Institute of Electrical and Electronic Material Engineers
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• v.31 no.7
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• pp.490-495
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• 2018

A multielectrode electronic paper film capable of expressing a single-color image was fabricated by injecting color electronic ink into an electronic paper panel; on the basis of its reflective or transparent properties, it is possible to control the expression of six single-color images and their transmittance. In this study, a single-color image was represented by driving a multielectrode electronic paper film; color coordinates were measured. The six capable single colors were yellowish pink (0.444, 0.354), white (0.355, 0.352), black (0.241, 0.241), orange (0.514, 0.360), reddish orange (0.606, 0.338), and reddish purple (0.469, 0.145). Color particles used in this paper were black and white, by which six colors are accomplished, but more single-color images can be combined by using cyan, magenta, and yellow particles.

• Journal of Haehwa Medicine
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• v.19 no.1
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• pp.1-7
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• 2010

Melasma is a common disorder that causes dark colored patches. It generally causes brown spots on the face, especially on the forehead, cheeks, and upper lips. The pattern of patches has bilateral symmetry in yellowish-brown to gray-brown colors. It is much more common in women than in men. Melasma is considered to be caused by environmental and physical constitutional factors and often occurs when a woman's hormone changes by pregnancy or the use of oral contraceptive pills. It is important to combine oriental medicine and Sasang constitutional medicine for treatment of Melasma. Normal treatment of Melasma includes warming oneself, removal of the emotional stress factors, and good nutrition.

• Fashion & Textile Research Journal
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• v.12 no.3
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• pp.381-388
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• 2010

The purpose of this study was investigate the dyeing property on chitosan crosslinked cotton fabric with cochineal at variable conditions. Chitosan crosslinked cotton fabrics were manufactured by crosslinking agent epichlorohydrin in the presence of chitosan. Chitosan crosslinked cotton fabrics dyed using cochineal were post-mordanted using Al, Fe and Cu. The dyeability(K/S) of chitosan crosslinked cotton fabrics were measured by computer color matching. Additionally the fastness to washing and light were also investigated. The dye-uptake of chitosan crosslinked cotton fabrics increased with the dyeing time. The saturated dyeing time was about 20minutes at $60^{\circ}C$. The dyeability(K/S) was remarkably increased with increasing content of crosslinked chitosan because of having a amine group of chitosan. Chitosan crosslinked cotton fabrics were dyed yellowish red by non and Fe mordanting, blueish red by Al and Cu mordanting, respectively. The washing and light fastness were increased by mordanting, especially Cu and Fe mordanting.

• Korean Journal of Ichthyology
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• v.26 no.2
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• pp.139-142
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• 2014

Based on a single specimen collected from the northern coastal waters of Jeju Island, we described Hemiramphus far as the first record from Korea. The specimen shows a elongated body with a prolonged lower jaw, 13 dorsal fin rays, 11 anal fin rays, 36 predorsal scales, and silvery white body with five black bars laterally and yellowish color on posterior part of lower jaw, tips of dorsal fin and upper caudal lobe. "Geom-mu-neui-hag-gong-chi" is proposed as a new Korean name for the species.

• The Korean Journal of Mycology
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• v.1 no.2
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• pp.31-33
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• 1973

On September 1972, a blight disease of turf (Arostis canina L.)was found in a golf link in Seoul Country Club at Seoul, Korea. Yellow circular patches of 15-20cm in diameter were observed and spreaded irregulary to collapse of themselves. The roots of the diseased plants were dark in color and were in a final state of decay. We isolated Curvularia sp. from the diseased plants and investigated the morphological and cultural characters. Its characters as follows: Mycelia septate, branched, hyaline or yellowish brown colored. Conidiophores septate, thin brown, unbranched. $65-270{\times}3.5-5{\mu}$. Conidia clustered at the tips of conidiophores, boat form or slightly curved with 1-5 septa, brown; both end cells hyaline; the third cell much larger than the others. $26.1-33.3{\times}9.5-10.1{\mu}$ (4 cell's conidium). The pathogenicity of the fungus to host plant was confirmed by soil inoculation method. We classified the fungus according to Gilman's method as a species Curvularia geniculata (Tracy and Earle) Boedjin.

• Mycobiology
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• v.43 no.3
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• pp.225-230
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• 2015

The polypore genus Abundisporus Ryvarden is characterized by resupinate to pileate fruitbodies with a purplish brown hymenophore, slightly thick-walled, pale yellowish and non-dextrinoid basidiospores, and causing white rot. A purple color hymenophore, an easily observable and striking character, was considered the main distinctive feature at the generic level within polypores. However, due to highly similar basidiocarp features, species identification within these purple polypores is particularly difficult. Three species of purple colored polypores have been reported in Korea (Abundisporus fuscopurpureus, A. pubertatis, and Fomitopsis rosea). Based on morphological re-examination, ecological information, and sequence analysis of the internal transcribed spacer, we showed that previous classification was incorrect and there is only one species (A. pubertatis) in Korea. We provide a detailed description of A. pubertatis in Korea, as well as a taxonomic key to distinguish wood rot fungi with a purple hymenophore.

• The Korean Journal of Mycology
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• v.48 no.2
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• pp.87-93
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• 2020

A fungal strain designated KNU-WDM2A2 was isolated from mosquitoes in Gimcheon, Korea. The pure culture was transferred to potato dextrose agar (PDA) and synthetic nutrient agar (SNA) media and attained a diameter of 90 mm after 10 days of incubation at 25℃. The colonies were whitish to light pink and cottony to wooly, with an abundant production of aerial mycelia. The strain produced hyaline to slightly yellowish conidiophores that were rough-walled and branched, with conidiogenous cells arising terminally or laterally. Conidia were unicellular, hyaline to light brown, smooth, and oval or ovoid to clavate, with a size of 4.1-6.9×2.5-3.3 ㎛ (n=65). A phylogenetic analysis was conducted using the internal transcribed spacer (ITS) regions and 28S rDNA of large subunit (LSU) sequences, to support the cultural and morphological characteristics. The KNU-WDM2A2 strain was identified here as Biscogniauxia petrensis, new to Korea.

• 보존과학연구
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• s.20
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• pp.121-137
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• 1999

Among pigment used at work of Dan-Chung, Emerald Green is specific illuminating fluorescent light of green. It is very difficult to change other organic or inorganic pigment. All of the internal high class pigment has rare light. But Emerald Green is superior to fresh color and stability out of industrial chemical products. It forms over 50% of quantity and importance of a pattern painting. Emerald Green prohibited to produce because of its toxicpollutants, so required to changing pigment development. It is characterized to excellent color, convenient work, economical, against-sunlight, against-air pollutant and durability. The result of a test is follows; 1. We are investigated into producing internal natural Emerald Green, import external pigment and industrial synthesis method etc. but unable to buy because of its toxic pollutant. 2. We are made six samples by yellowish and green is hpigment mixing. We tested on against sunlight and air pollutant. The best mixing ratio is follows. Titanium Dioxide R760 : 18g- Chalk, White Wash : 10g- Permanent Yellow : 7g- Cyanine Green : 8g- Chrome Yellow : 3g- Resin(Vehicle) : Acryl Emulsion(Styrene + 2-Ethyl HexylAcrylate + Methyl Meth Acrylate) 8%

• Korean Journal of Materials Research
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• v.13 no.8
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• pp.509-513
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• 2003

In the present investigation, $La^{3＋}$ and $Ce^{V}$ ions were substituted for $Y^{3＋}$ in the $YBO_3$: Tb in various concentrations. It has been found that these phosphors form solid solutions within limited concentration ranges Excitation and emission spectra under 254 nm and 147 nm were investigated for these phosphors to evaluate influences of $La^{3＋}$ and $Ce^{3＋}$ ions on brightness and CIE color coordinates. It has been observed that brightness of $(Y, La)BO_3$: Tb under 254 nm and 147 nm when $La^{3＋}$ ions are added show an increase of 2.7 times and 1.25 times, respectively. On the other hand, emission intensities of peaks in $Y_{0.8-x}$ $BO_3$: $Tb_{0.2}$ , $Ce_{x}$ show continuos decrease as $Ce^{3＋}$ / content is increased from 0 to 0.4. CIE color coordinates of prepared phosphors show yellowish green which is needed to be improved to be used for display applications.

• Journal of Environmental Science International
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• v.19 no.5
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• pp.585-590
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• 2010

This study attempted to facilitate various groundcover plants, related to phytoremediation material, and advance shade plants with a heavy metal tolerance to contaminated soil in an urban shade space. Saxifraga stolonifera, which has commonly been used a landscape shade plants, was evaluated to determine its heavy metal tolerance to different concentrations(Control, $100mg{\cdot}kg^{-1}$, $250mg{\cdot}kg^{-1}$ and $500mg{\cdot}kg^{-1}$ treatment) of Cd, Pb and Zn in soil. The growth of Saxifraga stolonifera showed no significant tendency after the initial transplantation, but showed distinct changes with the respective treatment heavy metal types and concentrations over time. Especially, severe chlorosis, with more yellowish green leaves, was observed, with inhibition at Cd concentrations greater than $100mg{\cdot}kg^{-1}$. Conversely, no external symptoms or growth retardation were observed with Pb and Zn concentrations less than $500mg{\cdot}kg^{-1}$. Therefore, Saxifraga stolonifera can be applied as a long term phytoremediation species in soil contaminated with low concentrations of heavy metal in urban shade spaces.