• Journal of Mushroom
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• v.9 no.2
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• pp.84-86
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• 2011

This study was carried out to investigate anti-inflammatory effects of collected mushroom in Korea. Anti-inflammatory effects analysis was followed by MTT test and nitric oxide inhibition activity. Thirty mushrooms were screened and twelve mushrooms were selected about MTT assay and three mushrooms were good at nitric oxide inhibition test. In our result, three mushrooms: Amanita virgineoides, Tylopilus neofelleus, Armillaria tabescens were good resource for anti-inflammatory effects and to be followed more research about relat.

• Journal of the Mineralogical Society of Korea
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• v.26 no.4
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• pp.219-228
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• 2013

To understand characteristics of biogeochemical corrosion for the metal canisters that usually contain the radioactive wastes for a long-term period below the ground, some metal materials consisting of cast iron and copper were reacted for 3 months with D. desulfuricans, a sulfate-reducing bacterium, under a reducing condition. During the experiment, concentrations of dissolved metal ions were periodically measured, and then metal specimen and surface secondary products were examined using the electron microscopy to know the chemical and mineralogical changes of the original metal samples. The metal corrosion was not noticeable at the absence of D. desulfuricans, but it was relatively greater at the presence of the bacterium. In our experiment, darkish metal sulfides such as mackinawite and copper sulfide were the final products of biogeochemical metal corrosion, and they were easily scaled off the original specimen and suspended as colloids. For the copper specimen, in particular, there appeared an accelerated corrosion of copper in the presence of dissolved iron and bacteria in solution, probably due to a weakening of copper-copper binding caused by a growth of other phase, iron sulfide, on the copper surface.

• Korean Journal of Ecology and Environment
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• v.50 no.1
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• pp.70-78
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• 2017

The Hwasan wetland vegetation is observed at mountain basin (644~780 m a.s.l.) where had become a potential land for indigenous people since prehistoric period. We phytosociologically investigated old-growth alder (Alnus japonica) forests using the $Z\ddot{u}rich$-Montpellier School's method and analyzed their spatial distribution pattern by actual vegetation map. Species performance was determined by using coverage and r-NCD. Viburnum opulus var. calvescens-Alnus japonica community syntaxonomically belonging to the Alnetea japonicae was first described and composed of three subunits: Salix koreensis subcommunity, typical subcommunity, and Pyrus ussuriensis subcommunity. Present plant community was compared with vicariant syntaxa such as Molinia japonica-Alnus japonica community, Rhamno nipponicae-Alnetum japonicae, and Aceri-Salicetum koreensis. Hwasan's alder forest, an alluvial terrace vegetation type on valley fan in the montane zone, is evaluated as vegetation class [I], which is a sort of benchmark plant community potentially on mountain wetlands in southeastern part of the Korean Peninsula. Simultaneously we suggested an establishment of the national strategy for habitat conservation free from hydrologically radical transform due to military utilization.

• Korean Journal of Food Science and Technology
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• v.42 no.1
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• pp.119-123
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• 2010

The quantitative sensory profiles of rice wines made with nuruks using eight different cereal ingredients were developed using sensory descriptive analysis. Two appearances, eight aromas, eight flavors and tastes, and two mouthfeel related sensory attributes were evaluated by a panel of 10 judges. The sample made of black rice nuruk had the highest intensity in red color, while the other samples had similar ranges in yellow color. The mean sensory intensities of the samples prepared with black rice and glutinous rice nuruks were high in 'sweet', 'fruit taste', 'pungent', and 'sour', while those samples prepared using non-glutinous rice, buckwheat, hull-less barley, unpolished rice nuruks had overall high intensities in 'grain', 'fermented aroma', 'bitter', and 'astringent' attributes. Based on the principal component analysis of the descriptive data, samples were primarily separated along the first principal component, which accounted for 53% of the total variance between the rice wines with high intensities of 'red color', 'sweet', and 'fruit taste' versus 'bitter', 'astringent', and 'yellow color'.

• Journal of Korean Society of societal Security
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• v.3 no.1
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• pp.43-50
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• 2010

Sliding accidents on the road have a high percentage by road freezing, especially, they often have appeared at bridges and Tunnel of freezing areas. Thus, the stability of road operations is enhanced by preventing partial freezing phenomenon. According to the geothermal snow melting system analysis, a pattern of thermal conductivity is found out; pavement materials of concrete and asphalt where the system is buried. The heat transfer simulation is essential when the geothermal snow melting system is applied according to heating exchanger pipe placed in the lower pavements. The model tests are conducted on low temperature in freezer using the manufactured test model which is equal to pavement materials. Many variables are discovered from numerical analyses under the same conditions with model test.

• Journal of Korean Society for Geospatial Information Science
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• v.17 no.3
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• pp.57-64
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• 2009

Field surveys for the digital map being constructed is being conducted using various work guide books based on the digital mapping internal rule. However, a modification of a rule used for paper map construction is being used for the digital mapping rule, which is causing many problems with the quality of the digital map. Therefore, to construct a high-quality digital map, general standards related to conducting field surveys need to be reviewed, and it's extremely important to construct an accurate digital map based on this. Accordingly, in this study, problems related to conducting field surveys for the construction of the digital map are analyzed in order to establish more suitable field survey standards for constructing an accurate digital map. To this end, work regulations related to construction of a digital map were analyzed, and attribute and field survey data were compared to those of a previously-constructed digital map for analysis. By reflecting opinions of field surveyors and related experts to the results of the analysis, more suitable field survey standards for constructing the digital map were presented.

• Tuberculosis and Respiratory Diseases
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• v.55 no.5
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• pp.526-530
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• 2003

Bronchogenic cysts are generally presented as a well defined mass that have thin and smooth wall in the intrapulmonary or mediastinal area by simple chest radiographs. We present the case of a 20-year-old man with a ill-defined left upper lobe mass, found by chest radiographs. At the preoperative examinations, chest computed tomography showed ill-defined mass with Hounsfield Number 26, and nonspecific findings were shown by the bronchoscopy and percutaneous needle aspiration. The patient was undertaken the left upper lobectomy. The surgical specimen contained a ill-defined mass, measuring $2{\times}3$ cm. On the section of the mass, a cyst containing dark brown thick materials was noted. The cyst was unilocular, and the wall showed a trabeculation. Microscopically, the cystic mass was lined with ciliated pseudostratified columnar epitheliums and surrounded by smooth muscle and cartilage.

• Tuberculosis and Respiratory Diseases
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• v.64 no.6
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• pp.422-426
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• 2008

Background: Mycobacterium abscessus is the most pathogenic and drug-resistant rapid-growing mycobacterium. Clarithromycin or azithromycin are the only regular oral antimycobacterial agents that have an effect on M. abscessus. We tried to detect the clarithromycin-resistant strains from the clinical isolates of M. abscessus. Methods: We tried to isolate the clarithromycin-resistant strains from 220 clinical isolates of M. abscessus by performing using reverse hybridization assay (RHA) and the broth microdilution test (BMT). Results: Seven resistant strains (3.2%) from all the tested clinical isolates were detected by BMT. Three of these resistant strains were also detected by RHA and it was confirmed that they had point mutants. Conclusion: These results showed that clarithromycin resistance in M. abscessus clinical isolates is related to a point mutation and other unknown mechanisms.

• Journal of the Korean Wood Science and Technology
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• v.43 no.1
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• pp.17-24
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• 2015

In this study, the effect of delignification degree of Korean white pine wood on fibrillation efficiency by wet disk-milling (WDM) and the properties of thus-obtained microfibrillated cellulose (MFC) were investigated. The effect on the tensile properties of nanopaper was also investigated. The delignification degree was adjusted by repeating 'Wise' method using sodium chlorite and acetic acid. The increase in delignification degree improved fibrillation efficiency, showing the smaller nanofiber dimension at the shorter WDM time. The filtration time of MFC water suspension was increased by the increase of WDM cycles. Tensile strength and elastic modulus of the nanopaper were increased by increasing delignification degree and disk-milling cycles.

• Korean Journal of Microbiology
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• v.52 no.1
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• pp.18-24
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• 2016

We investigated 23 lactic acid bacteria isolated from Korean breast milk-fed infant in order to select strains which show superior anti-allergic effect. The candidates were cultivated and then we obtained dried powders of tyndallized cells and supernatant concentrate separately. Screening was carried out with down-regulation of interleukin (IL) 4 and up-regulation of IFN-${\gamma}$ in mouse splenocytes. As a result of the screening, we selected Lactobacillus rhamnosus IDCC 3201 (RH3201) for oral feeding to ovalbumin-sensitized BALB/c mice. Oral administration of RH3201 as dead cell bodies and supernatant concentrate suppressed hyper-production of serum immunoglobulin (Ig) E levels compared to vehicle group. Such anti-allergic effects were achieved by improvement of the balance between cytokines produced from type-1 helper T (Th1) and type-2 helper T (Th2) lymphocytes. Therefore, RH3201 has potential to improve atopic symptoms by immunomodulatory effect.