• 제목/요약/키워드: natural setting

검색결과 404건 처리시간 0.023초

발효한약의 항생제 다제내성균 Pseudomonas aeruginosa를 억제하는 항균활성 (Antibacterial Activity of Fermented Korean Medicine Against Multi-drug Resistant Pseudomonas aeruginosa)

  • 류지연;박영자;김현수
    • KSBB Journal
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    • 제26권6호
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    • pp.543-551
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    • 2011
  • Bacterial antibiotic resistance is a real and growing problem for both Gram positive and Gram negative bacterial pathogens in the hospital setting. Among Gram negative bacteria, the ubiquitous bacterium Pseudomonas aeruginosa is a particular concern in immunocompromised and burn patients. The present study evaluated antibacterial activity and efficacy of a Korean herbal medicine against eight multi-drug resistant clinical isolates of P. aeruginosa (0225, 0254, 0347, 0826, 1113, 1378, 1731, and 2492) isolated at Daegu Catholic University Hospital. Methanol extracts of Galla rhois (5 and 10 mg/mL) displayed inhibition diameters for isolate 2492 of 10 and 12 mm, respectively, in a conventional disc diffusion assay. In seven kinds of Korean herbal medicines, increased inhibitory power of Lonicera japonica, Gardenia jasminoides, Galla rhois, and Scultellaria baicalensis was evident with the fermentation of six kinds of lactic acid bacteria. Three lactic acid bacteria (Lactobacillus plantarum subsp. plantarum KCTC 3108, L. casei KCTC 3109, and L. fermentum KCTC 3112) were identified as excellent strains for the production of antibacterial materials. In the six Korean herbal medicine extracts, strong inhibitory activity of fermented Forsythia suspensa, Glycyrrhizae radix, Lycium chinense, Platycodon grum, and Schizandra chinensis with five kinds of lactic acid bacteria was evident for seven multi-drug resistant P. aeruginosa isolates.

실거주환경 기반 빛환경 에너지 성능평가 방법 제안 연구 (A Study to Suggest a Method to Evaluate Light Environment Energy Performance based on Actual Residence Environments)

  • 김상훈;이행우;김용성
    • 한국디지털건축인테리어학회논문집
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    • 제13권4호
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    • pp.33-39
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    • 2013
  • As lighting energy consumption in buildings occupies high ratio, technical researches to solve it have been constantly carried out. However, basic studies on light environment performance evaluation is actually deficient and only at a level of a simple illumination monitoring. Thus, this study has suggest a light environment energy performance evaluation based on actual residence environments to allow setting lighting interoperation and user required illumination. Conclusions from the study are as follows: 1) As the performance evaluation suggested by this study has not only derived lighting energy usage as well as monitored simple indoor illumination distribution, it is quantitative and allows derivation of visual results. 2) The performance evaluation suggested by this study allows inputs of user required illumination through the performance evaluation server, which is able to support for performance evaluations for various works and users. 3) This study has verified validity of the performance evaluation method by analyzing results of lighting energy reduction by executing performance evaluation on changes of light shelf that is a natural lighting system through the suggested performance evaluation method. This study is significant from a viewpoint that it has suggested a quantitative performance evaluation method on the basis of actual residence environments. Those researches concerned on the energy performance evaluation should be constantly progressed from an aspect that they are another solution of the energy problems.

마케팅조사 현장에서 ethnography 원리의 적용방안에 관한 연구 (How to Apply Ethnography Principles to Marketing Research in the Field)

  • 유창조
    • 한국조사연구학회지:조사연구
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    • 제11권3호
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    • pp.115-137
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    • 2010
  • 본 연구는 현장에서 진행되는 마케팅조사에서 ethnography 원리가 적용될 필요성이 있음을 제안한다. Ethnography는 소비자의 체험이나 소비행태와 관련된 심층적인 자료를 수집할 수 있기 때문에 마케팅 관리자들의 의사결정에 유용한 정보를 제공할 수 있다. 따라서 본 연구는 조사업계에서 적용될 필요가 있는 ethnography 원리들을 소개하면서, 이의 활용가치를 요약하고, ethnography 원리들이 적용된 사례들을 소개한다. 마지막으로 본 연구는 마케팅 관리자가 조사를 진행할 때 ethnography 적용을 주저하게 되는 이유를 파악한 후 현장에서 ethnography가 보다 적극적으로 활용되기 위한 방안을 제시한다.

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시·군 경관계획 현황 및 계획 특성 연구 - 전라남도 22개 시·군을 대상으로 - (A Study on Planning Characteristics and the Status in the Landscape Master Plan of City and County - Focused on 22 Cities and Counties in Jeollanam-do, Korea -)

  • 유창균;변경화
    • 한국농촌건축학회논문집
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    • 제19권3호
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    • pp.43-51
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    • 2017
  • This study is to analyze establishment status and planning characteristics of the landscape master plan of 22 cities and counties in Jeollanam-do, Korea. The landscape master plans have been established in 19 cities and counties and among them they were established in 11 cities and counties before 2010. They tend to be made in city governments earlier than county governments. Community visions are implied with four meanings, 'landscape ecological', 'administrative economic', 'historical cultural', 'abstraction sensitive' in expression. For setting zones, axises, and bases of landscapes, characteristics of each landscape zone are emphasized with unification and connectivity of axises and bases of landscapes as one unit to local governments. Proposal of design principle or guideline of landscape by elements tend to be higher than landscape types. Locational characteristics of local governments have influenced to landscape types and characteristics of natural environments have been strongly reflected in landscape plan in particular.

A method to evaluate the frequencies of free transversal vibrations in self-anchored cable-stayed bridges

  • Monaco, Pietro;Fiore, Alessandra
    • Computers and Concrete
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    • 제2권2호
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    • pp.125-146
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    • 2005
  • The objective of this paper is setting out, for a cable-stayed bridge with a curtain suspension, a method to determine the modes of vibration of the structure. The system of differential equations governing the vibrations of the bridge, derived by means of a variational formulation in a nonlinear field, is reported in Appendix C. The whole analysis results from the application of Hamilton's principle, using the expressions of potential and kinetic energies and of the virtual work made by viscous damping forces of the various parts of the bridge (Monaco and Fiore 2003). This paper focuses on the equation concerning the transversal motion of the girder of the cable-stayed bridge and in particular on its final form obtained, restrictedly to the linear case, neglecting some quantities affecting the solution in a non-remarkable way. In the hypotheses of normal mode of vibration and of steady-state, we propose the resolution of this equation by a particular method based on a numerical approach. Respecting the boundary conditions, we derive, for each mode of vibration, the corresponding frequency, both natural and damped, the shape-function of the girder axis and the exponential function governing the variability of motion amplitude in time. Finally the results so obtained are compared with those deriving from the dynamic analysis performed by a finite elements calculation program.

보행자의 선호 보행방향에 관한 조사 및 분석 (Survey and Analysis of Pedestrians' Preferences on Walking Directions)

  • 정인주;정화식
    • 대한인간공학회지
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    • 제26권4호
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    • pp.75-83
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    • 2007
  • Why do some countries walk on the right and others on the left? People have a dominant hand which leads to a natural tendency to favor one side of the road or another depending on the means of transportation being used. The primary objective of this study was to investigate the stereotype of Korean regarding preferred walking direction in encountering various facilities and provide the appropriate information to traffic policy makers. Six hundred Korean male and female subjects aging from 12 to 83 were selected to investigate the various statistics about their preferred walking direction and their employment characteristics on walking diverse facilities. The walking directions of eleven different facilities were asked along with other relative subjects' characteristics(e.g., age, gender, hand and foot dominance) to determine the relationship among these obtained data. The descriptive statistics showed that 73.7% and 26.3% were preferred walking right and left direction respectively. Moreover, various statistical analysis revealed that general tendency of walking direction was varied by hand and foot dominances. There were strong tendency that right-handed people prefer walking right side of the road and vise versa, hence this should be considered in setting up traffic policies. As a concluding remark, it is better to design traffic policies and regulations in the way that peoples' preference and expectation.

환경영향평가에서 있어서 신속영향평가(RIAM) 기법 적용방안 (Application of Rapid Impact Assessment Matrix for Environmental Impact Assessment)

  • 양원호;김임순;최원욱;한상욱
    • 환경영향평가
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    • 제11권3호
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    • pp.223-230
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    • 2002
  • The rapid impact assessment matrix (RIAM) might be a new tool for performance of an environmental impact assessment (EIA), comparing with many traditional methods of EIA, which have produced large reports setting out the subjective judgement reached by the assessors. The main criticisms of E1A are in part a natural result of the traditional method used. RIAM uses a structured matrix to allow for such judgement, both subjective and those based on quantitative data, to be made on a like-by-like basis, and provided a transparent and permanent record of the judgement made. Also, the computerized RIAM system using software program allows for the matrix to be shown in graphical form, which greatly enhances the clarity of the results produced by this method. RIAM provides a system by which development options and scenarios can be rapidly evaluated. To illustrate the use of RIAM, an example from an EIA study using application of scoping by assessment criteria in Environmental Impact Regulation of Korea was given. The criteria that might be used to evaluation EIA methods, and how RIAM measures up against these criteria, are discussed.

디지털 시대에 요구되는 예비 초등교사의 과학 관련 협력적 문제해결역량 분석 (Analysis of Elementary Pre-Service Teachers' Collaborative Problem Solving Competency Related to Science which Required in the Digital Age)

  • 나지연;윤회정
    • 한국초등과학교육학회지:초등과학교육
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    • 제39권4호
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    • pp.494-505
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    • 2020
  • In this study, we surveyed characteristics of the science related collaborative problem solving competency of pre-service elementary teachers, especially required in the digital age. The participants in online survey were 119 pre-service elementary teachers of National University of Education located in Gangwon province. The analyzed results of survey were as follows: First, pre-service teachers performed their task responsibly in collaborative problem solving context related to science. However, they lacked competencies in making rubrics for problem solving processes or outcomes, and setting up rules about team activities. Second, in using ICT technology, the competencies of utilizing tools such as app and software lacked compared with the competencies of searching data in online and using ppt. Third, there was no statistically significant difference among groups by their intensive major in university or selective subject in high school. Nevertheless, pre-service teachers majoring in natural science showed more persistence than those majoring in humanities in problem solving context. Finally, there was no significant gender difference except 'clear communication and accomplishment'. That is, female pre-service teachers performed more responsible in their task and showed more fluency in communication and presentation within their group than male counterparts. Based on these results, implications in the field of pre-service teacher education were discussed.

LNG 연료추진 선박용 크랭크실 릴리프 밸브 스프링의 설계 및 평가 (Design and Evaluation of a Crankcase Relief Valve Spring for LNG-Fueled Ships)

  • 이효렬;안중환;안병훈;김화영
    • 한국생산제조학회지
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    • 제24권3호
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    • pp.263-269
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    • 2015
  • Growing concerns regarding air pollution have recently increased the demand for liquefied natural gas (LNG) fueled ships. LNG-fueled ships are equipped with an explosion relief valve in the crankcase to relieve excessive pressure and stop flames from emitting from the crankcase. In this study, a finite element analysis was conducted to evaluate the crankcase relief valve disk spring design using an ANSYS Workbench, v.15. The setting pressure, leak and explosion test performed by european standard EN14797 to evaluate function and mechanical integrity of crankcase relief valve. The tests results indicate that the pressure of the crankcase relief valve is 3.05 bar, with no air leakage at 2.97 bar. Finally, the mechanical integrity of the crankcase relief valve was confirmed through an explosion test in which the valve plate assembly, flame arrester, and other parts were safe from fracturing.

A revival of primary healing hypotheses: a comparison of traditional healing approaches of Arabs and American Indians

  • El-Magboub, Asma;Garcia, Cecilia;James, Adams David Jr.
    • 셀메드
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    • 제2권1호
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    • pp.4.1-4.13
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    • 2012
  • When medicine is unable to cure, and the end becomes imminent, or when the patient is tired of the side effects associated with chronic use of drugs, the search for alternative and new ways of healing is begun. Coincidentally, sometimes the alternative is the origin, as is the case for traditional Arab medicine and traditional American Indian healing. Traditional healing is the first healing that all people have used for 200,000 years, since the beginning of Homo sapiens. The sources and elements of traditional Arab medicine have been examined in books and by consulting with traditional Arab healers. Arabic medicine is a career combining both elements of science and philosophy based on religion and traditions, and includes a diversity of healing approaches: spiritual, physical, and using natural products. These approaches are discussed with emphasis on wet cupping (Alhijamah), a practice that is undergoing a revival nowadays in Arab countries. American Indian healing is a career based on religion, tradition, an innate healing gift and extensive training, both in a medical school setting and as an apprentice. Arabic healing approaches are compared to American Indian healing approaches.