• 제목/요약/키워드: mesurement

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유독물질 질량분율 실시간 측정용 정전용량센서 제작 (Fabrication of capacitance sensor for real time harmful substance mass fraction mesurement)

  • 김영수;오정석
    • 한국연소학회:학술대회논문집
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    • 한국연소학회 2014년도 제49회 KOSCO SYMPOSIUM 초록집
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    • pp.337-338
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    • 2014
  • In this study, a method of using a capacitance sensor was investigated as a means to measure the mass fraction of a type of harmful substance. Using MEMS process, we developed a capacitance sensor and studied the real time mass fraction with harmful substance mixture liquid.

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TDR을 이용한 토양함수비 측정 (Mesurement of Soil Water Content using Time Domain Reflectometry(TDR))

  • 김경한;윤춘경
    • 한국농공학회:학술대회논문집
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    • 한국농공학회 1998년도 학술발표회 발표논문집
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    • pp.407-413
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    • 1998
  • Considerable progress has been made in the application of time-domain reflectrometry(TDR) to measurement of soil water content. The TDR provides a means of monitoring the water content of soil over a wide range of values, in the field and in the laboratory The TDR measures the volumetric moisture content of the soil via a bureid sensor(probe). Probes can be buried and monitored remotely and an immediate result can be obtained. In addition to, the results are very reliable.

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첨가제에 의한 Soil-Cement의 성질 개량 (Improvement of Soil-Cement with additives)

  • 도덕현
    • 한국농공학회지
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    • 제21권1호
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    • pp.63-77
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    • 1979
  • Six kinds of weathered granite soils whose degree of weathering and mineral compo- sitions are different, were tested in order to improve the soil-cement. by performing compression test, durability (freezing-thawing) test and mesurement of shrinkage are made. From result of the tests as mentioned above, the following conclusions are drawn. The unconfined compressive strength of seondary additives containing soil-cement mixtures and their resistance against freezeing-thawing are more increased and shrinkage is more decreased than soil-cement mixtures only in case opitimun quantity of additives are added to soil-cement mixtures, and according as types of soils.

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