• 영어영문학
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• 제64권1호
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• pp.77-94
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• 2018

This paper examines William and Ellen Craft's Running a Thousand Miles for Freedom (1860)-a narrative of the enslaved couple's escape from Macon to Philadelphia in the guise of a white male master and a colored slave. Expanding Judith Adler's notion of "travel as performed art," my reading of Running focuses on the Crafts' stratagems of transvestism-crossing boundaries not only of gender, but also of race, class, and disability. If travel can be understood as a form of performed art, then why not address a traveler as a performance artist? I present William and Ellen's role-playing in Running as performers of crossing borders and categories, or, as "fugitive performers," since the couple's story never reaches its final arrival but narrates an eternal run-away, far more than "a thousand miles to freedom." Using social stereotypes of race and gender to disguise, William and Ellen plot, write, choreograph, play, and recite on the moving stages and manipulate the others-especially white American audiences-who accompany the couple's run-away and those who were responsible for the cultural drama-a tragedy of American slavery. Becoming "fugitive performers," William and Ellen de-essentialize and debunk the nineteenth-century America's firm belief in distinct color line between black and white, and in the high yet unstable bars between male / female, abled / disabled, master / slave, and freedom / slavery. The Crafts alert their contemporaries and readers by presenting the complex and permeable boundaries of race, gender, class, social and cultural ability.

• 한국유체기계학회 논문집
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• 제19권4호
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• pp.39-42
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• 2016

A PFA lined ball valve, which is machined with fluorinated resin PFA to its inner part for improving corrosion resistance, non-stickness, heat-resistance, has been widely used to the chemical/pharmaceutical industries, the semiconductor/LCD manufacturing processes, etc. with the high purity chemicals as working fluid. EPA stated that 60% of all fugitive emissions come from the valve stem packing in a typical petroleum or chemical processing plant. They monitor regulated components for leaks and maintain seal performance at acceptable levels. Korean industrial standards only deals with the bubble test for in-line leakage of valves, which has the detectable leak rate of $10^{-4}$ [$mbar{\cdot}L{\cdot}s^{-1}$], therefore, it is not sufficient to check fugitive emissions. In this study, we conducted Helium leak detection from a PFA lined ball valve and evaluated fugitive emissions according to ISO 15848-1, which has the detectable leak rate of $10^{-9}$ [$mbar{\cdot}L{\cdot}s^{-1}$], for manufacturing the high-reliable PFA lined ball valves against fugitive emissions.

• 센서학회지
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• 제32권2호
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• pp.75-81
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• 2023

The significance of gas sensors has been emphasized in various industries and applications, owing to the growing significance of environmental, social, and governance (ESG) management in corporate operations. In particular, the monitoring of hazardous gas leakages and detection of fugitive emissions have recently garnered significant attention across several industrial sectors. As industrial workplaces evolve to ensure the safety of their working environments and reduce greenhouse gas emissions, the demand for high-performance gas sensors in industrial sectors dealing with toxic substances is on the rise. However, conventional gas-sensing systems have limitations in monitoring fugitive gas leakages at both critical and subcritical concentrations in complex environments. To overcome these difficulties, recent studies in the field of gas sensors have employed techniques such as mobile robotic olfaction, remote optical sensing, chemical grid sensing, and remote acoustic sensing. This review highlights the significant progress made in various technologies that have enabled accurate and real-time mapping of gas distribution and localization of hazardous gas sources. These recent advancements in gas-sensing technology have shed light on the future role of gas-detection systems in industrial safety.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2020년도 가을 학술논문 발표대회
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• pp.38-39
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• 2020

Since a lot of fugitive dust is generated at construction and civil engineering construction sites in Korea, the fine dust regulation at construction sites has been strengthened in accordance with the implementation of the Special Act on Fine Dust Reduction. In a construction site, water is generally sprayed to temporarily reduce the generation rate of scattered dust, but there is a problem that when water evaporates, it scatters again. In this study, the performance of a scattering dust inhibitor incorporating a polymer that stabilizes the ground and reduces the rate of scattering dust by forming a polymer film even when water evaporates using a polymer and a surfactant was evaluated.