Hyun - Gwang Cho

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Nanocrystalline porous silicon (PSi) surfaces have been used to detect nitroaromatic compounds in vapor phase. The mode of photoluminescence (PL) is emphasized as a sensing attitude or detection technique. Quenching of PL from nanocrystalline porous surfaces as a transduction mode is measured upon the exposure of nitroaromatic compounds. To verify the(More)
Summary form only given. Wearable plasma-devices involving a dielectric barrier discharge (DBD) are introduced. The conventional devices of the atmospheric pressure plasmas, a DBD and a plasma jet developed last decades, have an inconvenient for some cases requiring a frequent treatment, a long period therapy, and a significantly large area to be exposed(More)
Machine tools are improved capacity remarkably during the 20th century. Improving the precision of machine tools are related with precision of products and accurate processing is always associated with the subject of interest. There are a lot of the elements that determine the precision of the machine, as guides, motors, structure, control, etc. In this(More)
  • Doe Manager, Anthony Zammerilli, +7 authors Yunxu Zhou
  • 2000
13. Type of Report & Period Covered Final Report 09 30 92 – 03 31 00 12. Sponsoring Organization Name and Address US Dept of Energy FETL 3610 Collins Ferry Road Morgantown, WV 26505 14. 15. Supplementary Notes Several technical papers were prepared and presented at various Society of Petroleum Engineers Conferences and US Department of Energy Conferences.(More)
Hospice care or palliative care is the care for terminal patients who soon approach death e.g. within several months. An important direction in it is to promote home care. This is because it can help to reduce medical expenses and make patients feel more comfortable at home. Information technology can be essential for the end-of-life care for patients at(More)
Ozone concentration in the air is about 0.01~0.03 ppm. A perceivable concentration of ozone odor for the human nose is higher than 0.03~0.05 ppm. Therefore ozone can be easily noticeable at a low concentration so that there will not be reported the ozone poisoning accident by a long exposure to human. However, ozone has disadvantages over a toxicity to(More)
The emergency cases are increasing in proportion to the growing complexity of our society, and the emergency diseases and hazards present other problems in health and welfare. We are required to develop our emergency care system which remains behind the foreign countries both in quality and quantity. Since the most crucial part of the emergency system is(More)
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