• Archives of Craniofacial Surgery
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• v.9 no.1
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• pp.27-30
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• 2008

Purpose: It's difficult to treat port wine stain with nodular change in Laser therapy, and many patients with port wine stain suffer from restriction in social activity in case that port wine stain located on face. We present our experience in excision of port wine stain and skin graft in two patients who had port wine stain with nodular change on their faces. Methods: After excision of discolorized skin and nodular changed lesion of port wine stain, thick split thickness skin graft was done. Results: There was no recurred nodular hypertrophy for 3 months and 3 years of follow up periods. Conclusion: Surgical treatments of port wine stain with nodular change can lead significant improvement of lesion and social intercourse.

• Journal of the Korean Ceramic Society
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• v.31 no.2
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• pp.213-219
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• 1994

The formations of spinel and colors of ZnO-Fe2O3-TiO2-SnO2 system have been researched on the basis of ZnO-Fe2O3 system. Specimens were prepared by substituting Fe3+, with Ti4+ or Sn4+ when mole ratios between Fe3+ and Ti4+ or between Fe3+ and Sn4+ were 0.2 mole. The reflectance measurement and X-ray diffraction analysis of the formation of spinel and the colors of there specimens were carried out. ZnO-Fe2O3 system in which Fe2O3 was substituted with SnO2 and TiO2 was formed the spinel structure of 2ZnO.TiO2, 2ZnO.SnO2, ZnO.Fe2O3. The stable stains which were colored with yellow and brown could be manufactured.

• Proceedings of the KSR Conference
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• 2007.05a
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• pp.1062-1067
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• 2007

This study presents an experimental technique to monitor the dynamic behavior of the railway bridge system simultaneously using multiplexed fiber Bragg grating (FBG) sensors. The measuring quantities include stains, curvatures, vertical deflections, and vertical accelerations. The strains are directly measured from multiplexed FBG sensors at various locations of the test bridge followed by curvature calculations based on the plane section assumption. Vertical deflections are then estimated using the Bernoulli beam theory and regression analysis. Finally, vertical accelerations are obtained from the numerical differentiation in time domain. In order to verify the proposed method, several conventional electric strain gauges, displacement transducers, and accelerometers are installed at the mid-span of the bridge for comparisons. A test train is passed over the bridge to monitor the dynamic response of the bridge. The monitoring results show that the multiplexed FBG sensing system is able to capture the essential behavior of the test bridge while resolving wiring problem in practice.

• The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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• v.17 no.1
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• pp.143-153
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• 2004

Antimicrobial activities against Streptococcus mutans, Candida albicans, Escherichia coli, Staphylococcus epidermidis, Staphylococcus aureus were assayed through the hot water extracts and the ethanol extracts from Chungyulsodokeum and its composition oriental medicines. The stains were incubated on culture medium and activated. We observed the size of inhibition zone on the strains that is incubated in strilized filter paper disc with various concentration extracts of Chungyulsodokeum and its composition 1. The extracts of Chungyulsodokeum, Coptidis Rhizoma, Paeoniae Radix, Glycyrrhizae Radix, Gardeniae Fructus showed antimicrobial activities against Staphylococcus aureus. 2. The extracts of Chungyulsodokeum, Coptidis Rhizoma, Paeoniae Radix, Forsythiae Fructus Ghycyrrhizae Radix, showed antimiaobial activities against Staphylococcus epidermidis. 3. The extracts of Chungyulsodokeum, Coptidis Rhizoma, Paeoniae Radix, Glycyrrhizae Radix, showed antimicrobial activities against Streptococcus mutans. 4. The extract of Coptidis Rhizoma showed antimicrobial activities against Candida albicans. 5. None of the extracts showed antimicrobial activities against Escherichia coli. We observed antimicrobial activities of Chungyulsodokeum and its composition against Streptococcus mutans, Staphylococcus epidermidis, Staphylococcus aureus.

• The Korean Journal of Cytopathology
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• v.4 no.2
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• pp.156-159
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• 1993

Cryptococcosis is a systemic mycosis that most often involves the central nervous system, followed by subclinical or symptomatic pulmonary involvement. We describe a case of unsuspected pulmonary cryptococcosis in a 69-year-old woman, diagnosed by sputum cytology. Sputum smears revealed numerous yeast like organisms typical of Cryptococcus neoformans measuring from 7 to 17 um in diameter. Mucicarmine, PAS, and methenamine sliver stains showed positive reaction of capsule and cell wall of Cryptococcus neoformans.

• Journal of Environmental Health Sciences
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• v.8 no.1
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• pp.25-30
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• 1982

The incidence of hospital infection has been seriously increased in the general hospital in recent years. This study was performed on hospital air and materials in a General Hospital in Seoul from June to December in 1980. The results were as follows: 1. Air sampling was done in multiple strategic areas by exposing standard petridishes for 5 minutes. There was a significant difference of airborne microbe between places. ($F._{99}$ = 3.2, p < 0.01). 2. The mean colony count was 8.6$\pm$6.2 colonies / plate / 5 minutes. 3. Gram stains of colony in air sampling were Gram (+) cocci 66.5%. Gram (+) rod 18.4%, Gram (-) cocci 1.3%, Gram (-) rod 8.7% Fungus 4.5%. 4. For the evaluation of sterilization of steam sterilizer and ethylene oxide gas sterilizer, biological monitoring were done by commercial spore strip. Positive culture was obtained in 2 out of 41 tests on 3 steam sterilizers, and in 3 out of 13 tests on ethylene oxide gas sterilizer. 5. Product sampling and culture were done for 2 kinds of disinfectants and 30 sets of various operation package or dressing materials. Positive culture was obtained in one disinfectants.

• Journal of the Korean Home Economics Association
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• v.31 no.2
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• pp.213-219
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• 1993

Aspergillus fumigatus(AF) and Penicillum citrinum(PC) were selected for their strong abilities to produce protease. The result are summarized as follows; 1. The λd numerical values of the silk fabrics with AF and PC were 560 and 580 nm for the both stains of molds. 2. By the growth of molds, lightness, original color scale, and grey scale of the fabrics gradually decreased while chroma increased. 3. The minimum inhibitory concentrations of mold proofing agents, such as Leperon WL, 8-hydroxyquinoline copper acetates, trimethylol melamine and dimethly ethylene urea was 50 ppm. 4. Glycoxale was not effective at the abovely concentration. Since Leperon WL, dimethyl ethylene urea effectively inhibited the growth of PC silk, tensile strengh and elongation of the fabrics were not changed.

• Coupled systems mechanics
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• v.5 no.4
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• pp.305-314
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• 2016

We utilize first-principles calculations within density-functional theory to investigate the possibility of strain engineering in the tuning of the band structure of two-dimensional $MoS_2$. We find that the band structure of $MoS_2$ monolayers transits from direct to indirect when mechanical strain is applied. In addition, we discuss the change in the band gap energy and the critical stains for the direct-to-indirect transition under various strains such as uniaxial, biaxial, and pure shear. Biaxial strain causes a larger change, and the pure shear stain causes a small change in the electronic band structure of the $MoS_2$ monolayer. We observe that the change in the interaction between molecular orbitals due to the mechanical strain alters the band gap type and energy.

• Ocean and Polar Research
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• v.27 no.2
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• pp.215-219
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• 2005

We isolated and identified three protease-producing bacteria that had inhabited the region around the Korean Arctic Research Station Dasan located at Ny-Alesund, Svalbard, Norway $(79^{\circ}N,\;12^{\circ}E)$. Biofilms were collected from the surface of a floating pier and from dead brown algae in a tide pool near the seashore. The biofilm samples were transported to the Korea Polar Research Institute (KOPRI) under frozen conditions, diluted in sterilized seawater, and cultured on Zobell agar plates with 1% skim milk at $10^{\circ}C$. Three clear zone forming colonies were selected as protease-producing bacteria. Phylogenetic analysis based on 16S rDNA sequences showed that these three stains shared high sequence similarities with Pseudoalteromonas elyakovii, Exiguobacterium oxidotofewm Pseudomonas jessenii, respectively. We expect these Arctic bacteria may be used to develop new varieties of protease that are active at low temperatures.

• Journal of Korean Foot and Ankle Society
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• v.4 no.1
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• pp.30-34
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• 2000

The Actinomyces organism is inherent in human as normal flora found in the mouth. Outside of the mouth, this organism can cause actinomycosis. Involvement of the extremity is very rare and atypical. The authors have experienced a case of actinomycosis of the foot and report with the literature review. Histopathologic finding shows multiple sulfur granules. In histochemical stains, periodic acid-Schiff, Gomori methionine silver, and gram stain were positive, and acid fast bacilli stain was negative. The patient was treated with surgical excision and antibiotic administration with Ampicillin for 6 months.