• Title/Summary/Keyword: adminstration

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Development of the SOD Mimics from the Natural Product by a Novel Biosystem-Antiinflammatory Effect of Morus alba (새로운 항산화제 검색법에 의한 SOD Mimic 천연 약물의 개발-상백피의 항염증효과)

  • Cheong, Kyoung-Ook;Nam, Kyung-Soo;Park, Jong-Hee;Kadota, Shigetoshi;Moon, Jeon-Ok
    • Korean Journal of Pharmacognosy
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    • v.29 no.1
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    • pp.1-7
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    • 1998
  • Aqueous extract of Morus alba L. blocked the toxic effect of paraquat on E. coli growth. The active components in the extract may be capable of crossing the cell membranes and protect against superoxide toxicity in E. coli, The extract inhibited $FeSO_4/H_2O_2$ induced lipid peroxidation in rat liver homogenate and protected against t-butyl hydroperoxide caused Ac2F cell damage. Moreover, the extract showed inhibitory effect on phospholipase $A_2$ activity in a dose dependent manner. Antiinflammatory effect of the extract was further investigated using the carrageenin-induced oedema model. A single adminstration of the extract (3g/kg body, p.o.) was more effective than indomethacin. These results suggest that the isolation and identification of the active components would have significant therapeutic application to inflammation associated with oxygen radicals.

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An Analysis of the Management Performance of GCM Farm in Chonnam based on the Multifaceted Approach (다면적 접근방법을 이용한 전남지역 GCM 실천농가의 경영성과 분석)

  • Seo, Jeong-Won;Jian, Jun;Kim, In-Seck
    • Korean Journal of Organic Agriculture
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    • v.26 no.1
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    • pp.1-17
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    • 2018
  • This study analyzes the management performance of environmentally-friendly rice farms using GCM method based on the multifaceted approach. This approach compares the management performance of GCM farms before and after the introduction of GCM, as well as the performance of GCM farms with the performance of conventional farms. It also compares the technical and managerial competence level of surveyed GCM farms with that of conventional farms based on the standard diagnosis table developed by Rural Development Adminstration. Results showed that average income has increased after the introduction of the GCM method and the average income of GCM farms was higher than that of conventional farms, while the level of rice production in farms using GCM method was lower than that of conventional farms. In addition, the technical and managerial competence score of surveyed farms using GCM method was higher than that of conventional farms. These results implies that the higher management performance of GCM farms compared to the conventional farms is attributed to not only the GCM method but also the competence level of farms using GCM method.

Optimal Distribution of Public Health Administration between Local and Central Government (중앙-지방 정부간 보건행정기능 및 재원의 효율적 배분방안)

  • 양봉민;김진현
    • Health Policy and Management
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    • v.2 no.2
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    • pp.33-56
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    • 1992
  • The objectives of this research are (i) to review the functional and financial distribution of public health adminstration between central and local governments, (ii) to find out, based on economic criteria, optimal distribution required to fullfil local need for public health, and finally, (iii) to suggest policy implications in health area in face of the newly arising local autonomy system in Korea. Judging from data on government expenditures and tax revenues, public health administration in Korea is highly concentrated into central government, both functionlally and financially. High dependency of public health on central government has often been critisized that local residents can not participate in the decision making process for local health problems. This study, however, shows that localization of public health administration does not necessarily result in efficient and equitable allocation of resource to satisfy local demand for public health. From this point of view, two eccnomic criteria are suggested, i.e. external effect and economies of scle, as distributive criteria of roles in public health administration between local and central government. In addition, superiority of central concentration of public health administration to localization is emphasized in that public health in a wide sense contains the nature of public good and is part of compulsory socil security system. As a consequence, planned intervention by government is desirable.

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Combustion Characteristics of Spruce Wood by Pressure Impregnation with Waterglass and Carbon Dioxide (물유리와 이산화탄소로 가압함침한 가문비 나무의 연소특성)

  • Park, Hyung-Ju;Lee, Se-Myeoung
    • Fire Science and Engineering
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    • v.26 no.4
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    • pp.18-23
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    • 2012
  • After produce the extracted wood to silicic acid gel, sodium carbonate and silicon dioxide with application of the making method for carbon dioxide, ignition time, ignition temperature, mass loss rate and critical heat flux are measured according to external radiation source (20, 25, 35 and 50 $kW/m^2$). From the results, pressure impregnation wood to use with water glass and carbon dioxide has fire retardant performance at heat flux (less than 20 $kW/m^2$) of Pre-Flashover fires. If we find out the excellent maxing ratio through continuously study, it might be decided to be able to be utilized as fire-retardant wood.

Molecular and Cytogenetic Analysis of Transgenic Plants of Rice(Oryza sativa L.) Produced by Agrobacterium-mediated Transformation

  • Cho, Joon-Hyeong;Kim, Yong-Wook
    • Plant Resources
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    • v.7 no.1
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    • pp.39-46
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    • 2004
  • To demonstrate the importance of transformation efficiency in independent event, molecular and cytogenetic analysis were conducted with genomic DNA and chromosome of transgenic plants produced by Agrobacterium tumefeciens LBA4404 (pSBM-PPGN: gusA and bar). Selection ratios of putative transgenic calli were similar in independent experiments, however, transformation efficiencies were critically influenced by the type of regeneration media. MSRK5SS-Pr regeneration mediun, which contains 5 mgL$^{-1}$ kinetin, 2% (w/v) sucrose in combination with 3% (w/v) sorbitol, and 500 mgL$^{-1}$ proline, was efficient to produce transgenic plant of rice from putative transgenic callus in the presence of L-phosphinotricin (PPT). With MSRK5SS-Pr medium, transformation efficincies of Nagdongbyeo were significantly enhanced from 3.7% to 6.3% in independent callus lines arid from 7.3% to 19.7% in plants produced, respectively. Stable integration and expression of bar gene were confirmed by basta herbicide assay, PCR amplification and Southern blotting of bar gene, and fluorescence in situ hybridization (FISH) analysis using pSBM-PPGN as a probe. In Southern blot analysis, diverse band patterns were observed in total 44 transgenic plants regenerated from 20 independent PPT resistant calli showing from one to five copies of T-DNA segments, however, the transformants obtained from one callus line showed the same copy numbers with the same fractionized band patterns.

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How Employee Personality Traits Affect Psychological Contract Breach: The Moderating Effect of Guanxi (근로자의 성격 특성이 심리적 계약 위반에 미치는 영향: ?시의 조절효과를 중심으로)

  • Kwon, In-Su;Kim, Sang-Joon;Lee, Ju-Il
    • Asia-Pacific Journal of Business
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    • v.11 no.4
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    • pp.149-165
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    • 2020
  • Purpose - This study investigates how employee personality traits affect psychological contract breach. Also, our study examines how Guanxi, a unique socio-cultural characteristic of China, moderates the relationship between personality traits and psychological contract breach. Design/methodology/approach - To test our ideas, we constructed a survey questionnaire based on the literatures on personality traits, Guanxi, and psychological breach. The questionnaires were distributed to Chinese employees, and then we conducted a regression analysis using 378 questionnaires. Findings - We found that neuroticism is positively related to perceived psychological contract breach. We also identified support for the prediction that the positive link between neuroticism and psychological contract breach becomes weaker when employees' awareness of Guanxi is high. Research implications or Originality - This study provides several theoretical and practical implications. First, this study elaborates the personality traits-psychological contract breach relationship by incorporating Guanxi, a critical contingency factor of China. Second, given that the relationship between neuroticism and psychological contract breach can be affected by employees' perceptions of Guanxi, managers should administer Guanxi to function as a lubricant within the organization.

The Effects of The Creating Shared Value on Building Self-Brand Connection and Brand Loyalty (기업의 공유가치창출이 브랜드 자아 연대의식 및 브랜드 충성도 형성에 미치는 영향에 관한 연구)

  • Jin, Chang-Hyun
    • Asia-Pacific Journal of Business
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    • v.9 no.4
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    • pp.201-221
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    • 2018
  • The purpose of this study is to investigate the relationship between association of a company's CSV activity and association of corporative competence and consumers' self-brand connection. The study examine how consumer self-brand connection affect self-identification and corporate identification as well as how these factors influenced on brand loyalty. The paper attempts to examine authenticity of CSV activity and product plays a moderating role when association of CSV and authenticity of product affects self-brand connection. a total of 700 consumers who have experience with the target company and products. A target company was selected by investigates. The company is one manufactures as well as implements CSV activities as a means of ethical management. The results indicated that CSV association and corporative competence are closely related to the self-brand connection. Such attitude in turn affected the consumers' formation of self-and corporate-identification and brand loyalty. Authenticity of CSV activity and product was proven to play a moderating variables for brand loyalty and perception of company.

A Study on Manufacturing Norms of Wollyang(月梁) Head in the 《Yeongjobeosig(營造法式)》 Song Dynasty (송(宋) 《영조법식(營造法式)》 중 월량(月梁) 보머리 가공 규범에 대한 고찰)

  • Lee, Yong-Jun
    • Journal of the Korean Institute of Rural Architecture
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    • v.21 no.3
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    • pp.33-40
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    • 2019
  • Woolyang(月梁) is a beam which whole shape is curved like a so-called moon(月). According to the ${\ll}$Yeongjobeosig(營造法式)${\gg}$, In the case of beams installed under the ceiling of a wooden building, it is used by manufacturing them in Woolyang(月梁) for maximum visual decorative effects as the shape is exposed. In order to achieve the end of a beam that is manufacturing in Woolyang(月梁), it is important to process it in a suitable size and shape for a given situation to achieve a combination with other members around it. However, in the "營造法式", the standard of production of the Woolyang(月梁) is divided into Myeongbog(明?), Chagyeon(箚牽), Pyeonglyang(平梁), and the height of each beam head is divided into 21分$^{\circ}$, 15分$^{\circ}$, 25分$^{\circ}$, but it is not possible to look at any more specific reference. In this paper, try to consider the principle of Woolyang(月梁) manufacturing and its normative contents which were indirectly proposed in the ${\ll}$Yeongjobeosig(營造法式)${\gg}$.

Evaluation of Exchange Capacities of Ca2+ and Mg2+ ions by Na-A Zeolite Synthesized from Coal Fly Ash (석탄비산재로 합성한 Na-A 제올라이트의 Ca2+와 Mg2+ 이온교환 성능평가)

  • Lee, Chang-Han;Lee, Min-Gyu
    • Journal of Environmental Science International
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    • v.27 no.11
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    • pp.975-982
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    • 2018
  • In this study, zeolite (Z-C1) was synthesized using a fusion/hydrothermal method from coal fly ash. The morphological structures of Z-C1 were confirmed to be highly crystalline with a cubic crystal structure. Exchange capacities of $Ca^{2+}$ and $Mg^{2+}$ ions in a single and a mixed solution reached equilibrium within 120 min. The exchange kinetics of these ions were well predicted by the pseudo-second-order rate equation. The exchange isotherms of the $Ca^{2+}$ and $Mg^{2+}$ ions matched the Langmuir isotherm better than the Freundlich isotherm. The maximum cation exchange capacities ($q_m$) obtained by the Langmuir isotherm model were 2.11 mmol/g (84.52 mg/L) and 1.13 mmol/g (27.39 mg/L) for the $Ca^{2+}$ and $Mg^{2+}$ ions, respectively.

Removal of Cu and Sr Ions using Adsorbent Obtained by Immobilizing Zeolite Synthesized from Jeju Volcanic Rocks in Polyacrylonitrile (제주 화산석으로 합성한 제올라이트를 Polyacrylonitrile에 고정화한 흡착제를 이용한 구리와 스트론튬 이온의 제거)

  • Lee, Chang-Han;Lee, Min-Gyu
    • Journal of Environmental Science International
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    • v.27 no.12
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    • pp.1215-1226
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    • 2018
  • In this study, PAN-SZ (polyacrylonitrile scoria zeolite) beads were prepared by immobilizing Na-A zeolite (SZ-A) synthesized from Jeju volcanic rocks (scoria) on the polymer PAN. FT-IR and TGA analysis results confirmed that the SZ-A was immobilized in the PAN-SZ beads. SEM images showed that the PAN-SZ beads are a spherical shape with 2 mm diameter and exhibit a porous inner structure inside the bead. The most suitable mixing ratio of PAN to SZ-A as the adsorbent for removing Sr ions was PAN/SZ-A = 0.2 g/0.3 g. The adsorption kinetic data for Cu and Sr ions were fitted well with the pseudo-second-order model. The Cu and Sr ion uptakes followed a Langmuir isotherm model and the maximum adsorption capacities at $20^{\circ}C$ were 84.03 mg/g and 75.19 mg/g, respectively. The amount of Sr ion adsorbed by SZ-A on the PAN-SZ beads was about 160 mg/g, which was similar to that adsorbed by SZ-A powder. Thus, the PAN-SZ beads prepared in this study are considered to be effective adsorbents for removing metal ions in aqueous solutions.