• Proceedings of the Korea Information Processing Society Conference
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• 2013.05a
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• pp.413-415
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• 2013

엔터프라이즈 포탈(Enterprise Portal : EP)이란 기업단위의 web 포탈로서 데이터베이스에 존재하는 기업내부의 정형화된 정보뿐만 아니라 파일형태로 존재하는 각종 문서와 서식, 사진 및 동영상등의 멀티미디어 데이터, 인터넷 컨텐츠 등과 같은 비정형화된 정보까지 기업과 관련된 모든 정보를 웹 기반의 단일 접점을 통해 사용자들에게 효과적으로 제공하는 것은 물론 이들을 가공한 지식정보들을 실시간으로 제공함으로써 업무생산성을 향상시키는데 중요한 역할을 한다. 하지만 2000 년대 초부터 기업의 경쟁력 향상을 위해 국내 기업들에 도입된 엔터프라이즈 포탈은 장기적 관점에서의 협업 중심이 아닌 단기적 관점에서의 시스템 기능 중심으로 무분별하게 도입되어 사용자 중심의 활용도 측면에서의 개선에 대한 요구들이 대두되고 있다. 따라서 본 논문에서는 기업의 엔터프라이즈 포탈 활용율 개선을 통한 업무생산성 및 만족도를 높이기 위해 UC(Unified Communication)기능 및 다양한 커뮤니케이션 수단(Wiki,Blog,Cop 등)을 활용한 업무프로세스 개선 방안을 도출하였으며 이를 동부건설사의 협업 기반 엔터프라이즈 포탈 구축에 적용함으로써 엔터프라이즈 포탈 활용률(사용율) 및 만족도를 각각 29%, 26%씩 향상 시키는데 성공하였다.

• Journal of the Korean institute of surface engineering
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• v.53 no.6
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• pp.306-311
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• 2020

In this work, diamond-like carbon (DLC) films are coated onto plasma nitrided AISI 4140 steel by DC-pulsed PECVD. One problem of DLC films is their very poor adhesion on steel substrates. The purpose of the nitriding was to enhance adhesion between the substrate and the DLC films. The white layer formation is avoided. Plasma nitriding increased adhesion from 8 N for DLC coating to 25 N for duplex coating. Duplex plasma nitriding/DLC coating was proven to be more effective in improving the adhesion. The purpose of the bond layer was to enhance adhesion between the substrate and the DLC films.

• International conference on construction engineering and project management
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• 2013.01a
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• pp.300-303
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• 2013

On BIPV systems, especially roof-top PV systems, the power generation is easier to be reduced due to the shades of facilities nearby, or roof itself. To secure profitability of roof-top PV systems, the optimal design of solar arrays through the precise shading analysis is an important item of design considerations. In this paper, an optimization system for array design of roof-top PVs is to be developed using three-dimensional Geospatial Information System(GIS). The profitability of income and expense is considered through the shading analysis of entire roofs. By applying the system to project for validation, the adequacy and the improvement of NPV of the system were verified compared to expert's design. The system has significance by reason that PV modules are placed through rules established with expert knowledge and geometric rules were applied to reflect the constructability and maintainability.

• Journal of Mushroom
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• v.16 no.1
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• pp.22-30
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• 2018

This study was performed to determine optimal extraction conditions of fermented Polygonum multiflorum root by Lentinula edodes (JMI10079) Pegler mycelials using response surface methodology. The independent factors were extraction temperature (X1: $40-100^{\circ}C$), extraction time (X2: 2-10 hrs.), and the ratio of water to sample (X3: 33-100 mg/mL). Their effects were assessed on dependent variables of the extract properties, which included soluble solid contents (Y1), $^{\circ}Brix$ of sample extract (Y2), total polyphenol content (Y3), total flavonoid content (Y4), 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) radical cation scavenging activity (Y5) and 2,2-diphenyl-1-picrylhydrazyl radical scavenging activity (Y6). The experimental data obtained were fit to a second-order polynomial equation. The optimal extraction conditions for fermented P. multiflorum root were: X1: $91.22^{\circ}C$, X2: 7.72 hrs, and X3: 39.71 mg/mL.

• Korean Journal of Plant Resources
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• v.31 no.4
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• pp.283-293
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• 2018

This study was performed to analysis of chemical constituent in Polygonum multiflorum root (PMR) by different dry methods (hot-air dry, shade dry, and freeze dry). The results are summarized as followings; major free sugar were detected fructose, glucose, and sucrose in dried PMR based on various dry methods. The highest content of free sugars was found in freeze dried PMR. The four organic acids were detected in dried PMR by HPLC analysis. The content of oxalic acid in shade dried PMR was higher than the dried PMR by different dry methods. The content of total amino acid and essential amino acids were high in the orders of freeze drying > shade drying > hot-air drying. The potassium and magnesium levels of freeze dried PMR was significantly higher than the other drying method of PMR. Whereas the calcium and sodium levels were higher in hot-air dried PMR. The major fatty acids were determined the linoleic acid in PMR by different dry methods.

• The Korean Journal of Pesticide Science
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• v.14 no.3
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• pp.199-208
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• 2010

Phenylformamidine derivatives are well known as insecticides for their specific activity against the insects. It has now been established that they show insecticidal activity as agonists on the octopamine receptor. In order to get a highly active compound we have intensively exploited fluorine substituted-aromatic formamidines possessing N-dialkylaminosulfeny group. Up to now, there are several candidates we found: N-(dialkylamino)sulfenyl-N-methyl-N'-(4-fluoro-2-methylphenyl)formamidines. The miticidal activity of Compound 29 show five-fold higher than Amitraz.

• The Korean Journal of Pesticide Science
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• v.14 no.3
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• pp.235-240
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• 2010

In order to elucidate residual characteristics of pesticides in garlic by drying, azoxystrobin and flutolanil used for garlic were treated to the garlic by dipping for 1 and 5 min into their standard diluents and then the garlic was dried with a freeze-drier. The test pesticides were analyzed with a GLC-ECD/NPD. Recoveries of the pesticides ranged from 81.96 to 98.18%. Amount of azoxystrobin and flutolanil in fresh garlic were 0.34 and 1.18 mg/kg in case of dipping for 1 min. and 0.44 and 2.15 mg/kg in case of dipping for 5 min., respectively. Also, amount of azoxystrobin and flutolanil in dried garlic were 0.80 and 4.51 mg/kg in case of dipping for 1 min. and 1.03, 5.28 mg/kg in case of dipping for 5 minute, respectively, representing that concentration of the test pesticides in garlic were increased by drying. In case of dipping for 1 and 5 min., processing factors of azoxystrobin were 2.35 and 3.34 and those of flutolanil were 1.19 and 1.17, respectively. Reduction factors of the pesticides in garlic were range from 0.94 to 0.97, indicating that few amounts of the test pesticides in garlic were dissipated by freeze-drying.

• Korean Journal of Weed Science
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• v.18 no.4
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• pp.341-347
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• 1998

This study was carried out to investigate the effect of U-Granule formulation of molinate(S-ethylhexaphdro-1H-azepine-1-carbothioate) mixtures in green house and paddy field, Five minutes were taken for U-Granule to spread out 7m in irrigated water of direct seeded on flooded paddy surface. The concentration of active ingredient of molinate in molinate U-Granule application was similar to molinate+simetryn U-Granule application. But weeding effect of molinate+simetryn U-Granule on Echinochlor crus-galli was 23% higher Than single application of molinate at 7m from application point. Bioefficacy of molinate+simetryn+imazosulfuron U-Granule on control of Echinochloa crus-galli was higher than that of molinzte+imazosulfuton U-Granule, but those effect on Eleochairs kuroguwai was not significantly different. Only slight rice phytotoxicity was observed at 5m and 2m from application point of U-Granule molinate+simetryn+imazosulfuron and molinate+imazosulfuron, respectively. So it is concluded that there is little phytotoxicity problem in practical application of U-Granule of molinate mixtures.

• Food Science and Preservation
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• v.23 no.2
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• pp.275-282
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• 2016

STAR of STAR (SS 01-04) is a series of drinks that consist of various extracts obtained from Coriolus versicolor, Artemisia capillaris Thunb., Hovenia dulcis, Acanthopanax sessiliflorus, Lycium chinense, Citrus reticulata, Saururus chinensis, Pueraria lobata, Pyrus pyrifolia, and Oenanthe javanica. A purpose of this study was to investigate the hepatoprotective effect of SS 01-04. Antioxidant activity of the drinks was evaluated by conducting a hydroxyl radical-scavenging assay. Cytotoxicity and hepatoprotective potential were determined using HepG2 cells in vitro, while protective effects against acute hepatotoxicity was evaluated in vivo. The antioxidant activity of the SS 01-04 at concentration of 100 and 250 mg/mL was similar to that of $50{\mu}M$ vitamin C. tert-Butyl hydroperoxide (tBHP)-induced production of reactive oxygen species (ROS) was blocked by SS 01, 03 and 04 in a dose-dependent manner. Treatment with SS 04 significantly lowered the serum levels of alanine aminotransferase and aspartate aminotransferase in an animal model of carbon tetrachloride $(CCl_4)-induced$ hepatotoxicity (p<0.05). In addition, SS04 increased glutathione level while decreased malondialdehyde level in the liver considerably (p<0.05). It also inhibited the $CCl_4-induced$ increase in the levels of triglyceride and cholesterol in serum and the liver. These findings indicated that SS 01-04 possessed antioxidant activity and protect against ROS. In particular, SS 04 is potentially highly beneficial in treating liver damage as it scavenges reactive free radicals and boosts the endogenous antioxidant system.

• Korean Journal of Medicinal Crop Science
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• v.11 no.5
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• pp.352-357
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• 2003

Volatile flavor compounds Angelica gigas Nakai and Angelica acutiloba Kitagawa were extracted by SDE (simultaneous steam distillation & extraction) using the mixture of n-pentane and diethylether (1:1, v/v) as an extract solvent and analyzed by GC-FID and GC-MS. The amount of essential oils of top part and root in Angelica gigas were obtained in 0.063% (v/w) and 0.389% (v/w) yields as a fresh weight base, respectively. The main compounds in top parts and the root were identified as nonane (7.51% and 24.49%, respectively), ${\alpha}-pinene$ (14.64% and 31.75%), limonene+${\beta}-phellandrene$ (14.01% and 9.66%), ${\gamma}-terpinene$ (7.85% and 1.20%), germacrene-d (5.85% and 0.22%), (E,E)-${\alpha}-farnesene$ (6.05% and 1.40%), ${\beta}-eudesmol$ (5.26% and 1.84%). Although these compounds were present in both parts. The results showed large differences in. the concentrations of them much varied. The amount of essential oils stem and leaf obtained (0.068% and 0.127% in A. gigas) and (0.153% and 0.243% in A. acutiloba) yields as a fresh weight base, respectively. More than 18 and 32 components in stem and leaf have been identified, which of main components in A. gigas were ${\alpha}-pinene$, myrcene, limonene, germacrene-d, eudesmol and butylphthalide, but germacrene-d and butylphthalide contents were also different in stem and leaf. And more than 21 and 32 components in A. acutiloba were ${\gamma}-terpinene$ and butylphthalide. Volatile compounds were very different in both species.