• Korean Journal of Medicinal Crop Science
• /
• v.16 no.4
• /
• pp.273-278
• /
• 2008

We aimed to investigate the antiviral activity of Zanthoxylum species against influenza virus A/WS/33, A/PR/8 and B/Lee/40 used by sulforhodamine B (SRB) assay and the action of leaves extracts of Zanthoxylum piperitum on life cycle of influenza virus A/WS/33. Among the twelve extracts, only the leaf extract of Z. piperitum exhibited strong antiviral activity at low concentration of less than 10${\mu}g/m{\ell}$ with no citotoxicity (50${\mu}g/m{\ell}$) against all of three viruses. In addition, only oseltamivir showed antiviral activity with $IC_{50}$ of 65.3${\mu}g/m{\ell}$ against influenza A/WS/33 among the viruses. Furthermore, the leaf extract of Z. piperitum suppressed infection of influenza virus A/WS/33, when added just prior (-1 hr) or after virus inoculation (0 hr). Leaf extract of Z. piperitum directly affect the infectivity of influenza virus A/WS/33 particles. Therefore, Leaf extract of Z. piperitum exhibited higher antiviral activity against three influenza viruses than that of the oseltamivir, which directly interacts with influenza A/WS/33 particles, affecting the initial stages of infection such as receptor binding and virus entry.

• Journal of Microbiology and Biotechnology
• /
• v.18 no.3
• /
• pp.573-578
• /
• 2008

Lactobacillus paraplantarum KM (Lp), Weissella sp. 33 (Ws), and Enterococcus faecium 35 (Ef) were used in single (Lp, Ws, Ef) or mixed cultures (Lp+Ws, Lp+Ef, Ws+Ef) for soy milk fermentation ($37^{\circ}C$, 12 h). After 12 h, the cell numbers, pH, and TA of soymilk were $7.4{\times}10^8-6.0{\times}10^9CFU/ml$, 3.8-4.5, and 0.59-0.70%, respectively. Changes in the contents of glycitin and genistin in soymilk fermented with Ef were not significant. The contents of isoflavone glucosides in soymilk fermented with the other cultures decreased significantly with an increase of aglycone contents (p<0.05). It corresponded well with a sharp increase in ${\beta}$-glucosidase activity during fermentation. About 92-100% of the daidzin and 98-100% of the genistin in soymilk were converted to corresponding aglycones by Lp, Ws, or Lp+Ef within 12 h.

• The KIPS Transactions:PartD
• /
• v.15D no.4
• /
• pp.569-580
• /
• 2008

Web services are the current most promising technology for service oriented architecture(SOA) implementations. However, in spite of the large scale acceptance of web services, they have been relegated to internal integration projects, and the grand vision of virtual enterprises where partners can be integrated on demand is yet to be realized. The main reason is that the current standards of web services are not very suitable for the dynamic web service discovery and integration. In this paper, we present a novel SemanticBPEL solution that merges the benefit of WS-BPEL, with the advantage of OWL-S for building a semi-automatic web service composition system. In particular, this work proposes a multi-phase search method for solving dynamic discovery and integration problems of web services. The proposed method is compared with the existing keyword based retrieval method. These comparisons show that our approach outperforms the existing method.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.12 no.4
• /
• pp.1523-1531
• /
• 2011

Multi-axle driving vehicle are favored for military use in off road operations because of their high mobility on extreme terrains and obstacles. Especially, Military Vehicle needs an ability to driving on hills of 60% angle slope. This paper presents the improvement of the ability of hill climbing for 6WD/6WS vehicle through the optimal tire force distribution method. From the driver's commands, the desired longitudinal force, the desired lateral force, and the desired yaw moment were obtained for the hill climbing of vehicle using optimal tire force distribution method. These three values were distributed to each wheel as the torque based on optimal tire force distribution method using friction circle and cost function. To verify the performance of the proposed algorithm, the simulation is executed using TruckSim software. Two vehicles, the one the proposed algorithm is implemented and the another the tire's forces are equivalently distributed, are compared. At the hill slop, the ability to driving on hills is improved by using the optimum tire force distribution method.

• Food Science of Animal Resources
• /
• v.42 no.3
• /
• pp.455-466
• /
• 2022

The aim of this study was to assess the occurrence of white striping (WS), wooden breast (WB), and WS combined with WS/WB muscle abnormalities in broilers (Ross 500) at different slaughter ages (34, 41, and 48 d). In addition, the influence of these muscle abnormalities at different slaughter ages on quality characteristics (physical dimensions, pH, color index, and chemical composition) was studied. Overall occurrence of muscle abnormalities was 45%, 92%, and 100% at slaughter ages of 34, 41, and 48 d, respectively. It was found that about 39% from the occurrence of muscle abnormalities was not similar in the same bird (left and right fillets). Breast fillets affected by muscle abnormalities had significantly (p<0.05) higher weight than normal fillets. At slaughter age of 34 d, normal fillets had significantly higher L^* (67.37 vs. 61.73 and 63.05, p<0.05), lower a^* (3.25 vs. 4.87 and 5.18, p<0.05) and b^* (4.02 vs. 5.20 and 5.99, p<0.05) than WS and WS combined with WB fillets; respectively. The changes in chemical composition due to muscle abnormalities were more significant at high slaughter age than at low slaughter age. In conclusion, the occurrence of muscle abnormalities was strongly influenced by slaughter age. Moreover, breast fillets affected by muscle abnormalities had different quality characteristics (proximate composition, color traits, and dimensions) in comparison to normal fillets.

• Proceedings of the Korean Operations and Management Science Society Conference
• /
• 2006.05a
• /
• pp.235-242
• /
• 2006

본 논문에서는 웹서비스를 위한 비즈니스 프로세스 실행 언어인 BPEL4WS 표준을 구현하기 위한 표준 도입 가이드라인을 개발하여 제시하였다. BPEL4WS 표준을 지원하는 BPM 솔루션이 갖추어야 하는 참조 아키텍처(Reference Architecture)를 제시하고, 참조 아키텍처를 구성하는 핵심 컴포넌트인 BPEL 디자이너, 프로세스 공개 모듈 및 시작 모듈, BPEL 엔진 프로세스 모니터링 및 분석 모듈별로 구현 가이드라인을 제시하였다. 본 연구에서 제시한 가이드라인은 BPM 시스템 개발 기업이 BPEL 표준을 적용하여 솔루션을 효율적으로 구축하는데 활용될 수 있다.

• Journal of the Korea Institute of Information and Communication Engineering
• /
• v.10 no.2
• /
• pp.392-397
• /
• 2006

This paper proposed yaw moment control scheme using braking and active rear wheel steering for improving driving stability especially in high speed driving. Its characteristics the unified chassis control system of two equipment that 4WS(4 Wheel Steering) and ESP(Electronic Stability Program). in this study the performance of the vehicle was compared each equipment. And conventional ABS and TCS can only possible to control the longitudinal movement of braking equipment and drive which can only available to control of longitudinal direction. There after new braking system ESP was developed, which controls both of longitudinal and lateral, with adding of the function of controlling Active Yaw Moment. On this paper, we show about not only designing of improved braking and steering system through establishing of the integrated control system design of 4WS and ESP but also designing of the system contribute to precautious for advanced vehicle stability problem.

• The Korean Journal of Mycology
• /
• v.23 no.4 s.75
• /
• pp.285-297
• /
• 1995

Ganoderan, an immunomodulating ${\beta}-glucan$ of G. lucidum, induces potent antitumor immunity in tumor-bearing mice. The present study was set up to elucidate the chemical composition and bioactivities of ganoderan obtained from the mycelial fractionation of G. lucidum IY009. Ganoderan was isolated and purified from its extracellular, cell wall and cytoplasmic sources. These ganoderans were composed mainly of glucose. The cell wall-alkali soluble-water soluble fraction (CW-AS-WS) showed the highest antitumor activity (inhibition rate of 94%) in sarcoma-bearing mice and 37% of anticomplementary activity. The CW-AS-WS fraction was found to be approximately average 20,000 dalton in aq. 0.3N NaOH solution and composed of 88% carbohydrate and 4% protein. The carbohydrate of the CW-AS-WS was composed of 74% glucose. These results indicate that the ganoderans extracted from the mycelial fractionations of G. lucidum IY009 had different chemical characteristics and showed different potentiality in antitumor and anticomplementary activity.

• Korean Journal of Food Science and Technology
• /
• v.51 no.4
• /
• pp.309-315
• /
• 2019

In this study, the physicochemical characteristics of imported whole sesame oil (WS; WS1, WS2), imported sesame powder oil (SP; SP1, SP2), sesame oil mixed with imported whole sesame and sesame powder (WSP; WSP1, WSP2) were analyzed and their quality characteristics were compared according to the imported raw material type. $L^*$ and $b^*$ values of WS1 were the lowest and the browning index was significantly high. WS2 showed contrasting results. The redness of sesame oil was high due to its high acid value. The correlation value showed a low acid value as the content of saturated fatty acid was high. SP showed low values for antioxidant property and overall preference. The overall preference score of sensory evaluation showed the highest positive correlation with the score, suggesting that SP lacked the unique fragrance. Therefore, SP lacked the specific aroma and antioxidant property.

• Journal of the Microelectronics and Packaging Society
• /
• v.27 no.4
• /
• pp.119-125
• /
• 2020

Transition metal dichalcogenides (TMDCs), two-dimensional atomic layered materials with direct bandgap in the range of 1.1-2.1 eV, have attracted a lot of research interest due to their high response to light and capability to build new types of artificial heterostructures. However, the large-area synthesis of high-quality and uniform TMDC films with vertical-stacked heterostructure still remains challenge. In this study, we have developed a metal-organic chemical vapor deposition (MOCVD) system for TMDCs and conducted a systematic study on the growth of single-layer TMDCs and their heterostructures. In particular, using a bubbler-type organometallic compound sources, the concentration and flow rate of each source can be precisely controlled to obtain uniformly single-layered MoS2 and WS2 films over the centimeter scale. In addition, the MoS2/WS2 vertical heterostructure was achieved by growing WS2 film directly on the MoS2 film, as confirmed by electron microscopy, UV-visible spectrophotometer, Raman spectroscopy, and photoluminescence spectroscopy.