• Title/Summary/Keyword: Medium

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Simultaneous Measurement of Temperature and Refractive Index of a Medium Using by a Side-Polished Fiber Containing a Fiber Bragg Grating (광섬유 브래그 격자가 포함된 측면 연마된 광섬유를 이용한 매질의 온도와 굴절률 동시 측정)

  • Kim, Kwang Taek
    • Journal of the Korean Institute of Electrical and Electronic Material Engineers
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    • v.28 no.8
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    • pp.513-517
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    • 2015
  • We proposed and demonstrated a simultaneous measurement method to detect the refractive index and temperature of a medium using a side-polished fiber involving FBG (fiber Bragg grating). The temperature of a medium was obtained by using the Bragg wavelength shift of FBG, while the refractive index of medium were calculated by using the transmission loss. The Bragg wavelength is independent on the refractive index of the covering medium placed on surface of side-polished fiber, while the transmission loss at off-Bragg wavelength highly depends on the environmental temperature because of thermo-optic effect of the medium.

Solid medium integrated impedimetric biosensor for detection of microorganisms (미생물 검침을 위한 고체 배지 임피던스 센서)

  • Choi, Ah-Mi;Park, Jae-Sung;Jung, Hyo-Il
    • Proceedings of the KSME Conference
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    • 2008.11a
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    • pp.1629-1632
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    • 2008
  • Rapid, real-time detection of pathogenic microorganisms is an emerging and quickly evolving field of research, especially with regard to microorganisms that pose a major threat to public health. Herein, a new method that uses bioimpedance and solid culture medium for the real-time detection of microorganisms is introduced. We fabricated a new impedimetric biosensor by integrating solid media and two plane electrodes attached on two facing sides of an acryl well. During bioelectrical impedance analysis, the solid medium showed the characteristics of a homogenous conductive material. In a real-time impedance measurement, our solid-medium biosensor could monitor bacterial growth in situ with a detection time of ${\sim}4$ hrs. Our data indicate that the solid-medium biosensor is useful for detecting airborne microorganisms, thereby providing a new analytical tool for impedance microbiology.

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The Interactive Relationship between Small and Medium-sized Enterprises' Clusters and Regional Economic Growth

  • Rong, Wang;Li, Xu
    • Journal of Distribution Science
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    • v.13 no.4
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    • pp.29-33
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    • 2015
  • Purpose - This paper aims to explain the interactive relationship between small and medium-sized enterprises' clusters and regional economic growth, with Jiangsu Province as an illustrative example. It focuses on studying the promotional effects, if any, of small and medium-sized enterprises' cluster-development on regional economic growth, and vice-versa. Research design, data, and methodology - Data were collected from the Jiangsu Statistical Yearbook and the China Industrial Economic Statistical Yearbook, by selecting 26 industries as the research subjects. The sample interval selection is 1981-2012. The data were analyzed with the dynamic panel system using stata 12.0. Results - 1) The small and medium-sized enterprises' cluster degree and Jiangsu's economic growth have a long-term stable equilibrium relationship. 2) In the short term, they have a dynamic adjustment 3) The enterprises' cluster degree leads to regional economic growth in Jiangsu, but not vice-versa. Conclusions - Small and medium-sized enterprises' clusters have an important promotional effect on Jiangsu's economic growth, especially industries with high degree of agglomeration. Therefore, the formation of these clusters can significantly improve economic growth.

Proposal for Using Sine with Dwell for the Evaluation of ESC for Medium Commercial Vehicles (중형 상용차량 ESC 평가를 위한 Sine with Dwell Test 제안)

  • Kwon, Baeksoon;Yi, Kyongsu
    • Journal of Auto-vehicle Safety Association
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    • v.7 no.2
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    • pp.32-38
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    • 2015
  • A sine with dwell test is well known as a test scenario for evaluation of performance of electronic stability control(ESC) on passenger vehicles and heavy commercial vehicles. However, when it comes to ESC for medium commercial vehicles, the test scenario has not been established yet. In this paper, the sine with dwell test was modified considering characteristics of medium commercial vehicles. The three main modifications of the original test scenario are the steering angle level, steering frequency, and loading condition of the vehicle. These modifications are derived from simulation study for different medium commercial vehicles. From simulation study, it was shown that the ESC system for medium commercial vehicle is objectively evaluated by the proposed test scenario. A clear improvement on vehicle stability was seen in the results when ESC system was used.

Media Optimization for L-tryptophan Production by Genetically Engineered Klebsiella pneumoniae (유전자 조작한 Klebsiella pneumoniae로부터 L-트립토판 생산을 위한 발효배지 조건)

  • 김천규;정용섭;홍석인
    • Microbiology and Biotechnology Letters
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    • v.22 no.5
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    • pp.557-560
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    • 1994
  • The optimum medium composition for the production of L-tryptophan with Klebsiella pnuemoniae pheA tyrA trpE trpR/pSC 101-trp$^{+}$ and the effect of precusors in the optimum medium were studied. The specific growth rate in the optimum medium was almost the same as that in the basal medium, the former showing 1.01 and the latter 1.07 hr $$^{-1}$, but the produced tryptophan was increased 45% in the optimum medium. The maximum amount of produced tryptophan was 159 mg/l within 14 hours. Tryptophan production was ceased by casamino acid addition over 4 g/l in medium, but cell maSS increased with its addition. Indole and anthranilate as precusors had toxic effect on growth and tryptophan production at experimented concentration range (over 20 mg/l), but L-serine had good effect on tryptophan production, resulting in 175 mg/l tryptophan within 14 hours.

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An Empirical Study of influence Factor to TPM Performance in medium and small enterprises (중소기업 TPM 성과에 영향을 주는 요인에 대한 실증적 연구)

  • Choi, Moo-Ho;Ree, Sang-Bok
    • Journal of Korean Society for Quality Management
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    • v.38 no.3
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    • pp.449-462
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    • 2010
  • In this Paper, We analyzed influence Factor to TPM Performance in medium and small enterprises by empirically. By Literature survey, We hypothesize education training and 5S influence to individual improvement, independence maintenance, planning and foresight, which also influence to flexibility, total equipment performance, quality, which finally influence to lower cost, delivery date. To analyze empirically, we survey questionnaire in medium and small enterprises being below 300 people. From statistical analysis, 7 hypotheses are rejected, which is different existing research. This is analyzed that reflect actuality that medium and small enterprises is different from large enterprises. We expect that result of this treatise does concentration effort in important factor to get TPM performance in medium and small enterprises.

- An Education Model Improvement of the Small and Medium Sized Enterprises for Survey of Safety Education Actual Condition - (안전 교육 실태 조사를 통한 중소기업의 안전 교육 모델 개발)

  • 전미경;홍성만;박범
    • Proceedings of the Safety Management and Science Conference
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    • 2003.11a
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    • pp.1-13
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    • 2003
  • Domestic industry calamity rate did decrease in large numbers by many efforts of the safety and the health organizations. Nevertheless domestic industrial accident level is low yet among the OECD countries. Domestic small and medium enterprises is in trend that industrial accident is increased by deterioration of hardware, unpreparedness of safety equipments. But, Domestic small and medium enterprises' safety and health education had not been utilized so far effectively. This research groped efficient operation model of the safety and the health education through the survey about a solution for problems of education that is enforced in small and medium enterprises to three groups of workers and safety and health administrators and managers. Compared domestic safety and health educational system and advanced foreign educational system. And, analyze problems about domestic small and medium enterprise's safety and health education and presented a solution. Finally, presented efficient operation model of the safety and the health education suitable to domestic medium and small enterprises.

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Plant Regeneration from Shoot Tip-Derived Embryogenic Callus of Dianthus superbus

  • Lee, Eun-Ae;Kim, Joon-Chul;Kim, Won-Bae;Kim, Byeong-Hyeon;Kim, Jeong-Kan
    • Journal of Plant Biology
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    • v.37 no.3
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    • pp.381-385
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    • 1994
  • The highest degree of callus formation was obtained from the shoot tips of Dianthus superbus when cultured on the MS medium supplemented with 2.0 mg/L NAA and 0.5 mg/L BAP. Embryogenic calluses were obtained from the seperated friable calluses on MS medium containing 2.0 mg/L 2,4-D after 7-8 wk of culture. For plant regeneration, embryogenic calluses were selected and cultured on te proliferation medium. After 3 wk, somatic embryos appeared on MSK medium (0.5 mg/L NAA, 2.0 mg/L kinetin) and N6 medium (2.0 mg/L kinetin, 0.1 mg/LNAA, 0.1 mg/L 2,4-D and 2.0 g/L casein hydrolysate). When these somatic embryos were kept under continuous illumination, shoots were successfully regenerated on the both media. The shoots were rooted on MS medium supplemented with 2.0 mg/L NAA.

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A Empirical Study on the IMS for Information in Small & Medium Enterprises (중소기업 정보화를 위한 IMS 인증제도에 관한 실증적 연구)

  • Park Jae-Yong
    • Management & Information Systems Review
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    • v.8
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    • pp.1-23
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    • 2002
  • Technical innovation is very important in the small and medium enterprises. All successful innovation stars from a creative ideas, it be a new application for a technology, the satisfaction of a new identified need or of an old need in a new way, or the manufacture of a product by a different method. The purpose of this study is to investigate into the implementation effect of IMS(information management system) for information in small and medium enterprises. This research analysis was done as to small and medium enterprises of 24. The Results for this research analysis was as follows. First, the satisfaction scored 4.10 in information level up of the small and medium enterprises. Second, increased effect productivity scored 3.37 in samples of 17. Thrid, increased management efficiency productivity scored 3.14 in samples of 17.

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Wave propagation in fibre-reinforced anisotropic thermoelastic medium subjected to gravity field

  • Abd-Alla, A.M.;Abo-Dahab, S.M.;Bayones, F.S.
    • Structural Engineering and Mechanics
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    • v.53 no.2
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    • pp.277-296
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    • 2015
  • The objective of this paper is to investigate the surface waves in fibre-reinforced anisotropic thermoelastic medium subjected to gravity field. The theory of generalized surface waves has firstly developed and then it has been employed to investigate particular cases of waves, viz., Stoneley waves, Rayleigh waves and Love waves. The analytical expressions for displacement components, force stress and temperature distribution are obtained in the physical domain by using the harmonic vibrations. The wave velocity equations have been obtained in different cases. The numerical results are given and presented graphically in Green-Lindsay and Lord-Shulman theory of thermoelasticity. Comparison was made with the results obtained in the presence and absence of gravity, anisotropy, relaxation times and parameters for fibrereinforced of the material medium. The results indicate that the effect of gravity, anisotropy, relaxation times and parameters for fibre-reinforced of the material medium are very pronounced.