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Kim, Young-Doo;Woo, Jin-Chun;Bae, Hyun-Kil;Kim, Byoung-Moon;Lee, Byung Gil;Heo, Gwi Suk
- Analytical Science and Technology
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- v.21 no.1
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- pp.14-19
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- 2008
Among the many odor materials, aldehyde has bad influences not only on human nose, but also on human health. Aldehyde has a strong odor at infinitesimal level, such as down to ppt concentration. Also aldehydes are highly reactive and have poor stability. Therefore, manufacture of standard gases, analysis of aldehydes are very difficult compare to other air pollution analysis. Aldehyde CRM containing 4 different aldehydes at $10{\mu}mol/mol$ (ppm) is developed by using gravimetry method according to ISO 6142 guide. The standard gases were reproduced again, and examined its reproducibility of preparation by GC-FID. The developed aldehyde CRM's certified value showed a relative expanded uncertainties of 2.11 % (95 % of confidence level, k=2).
https://doi.org/10.5806/AST.2008.21.1.014 인용 PDF KSCI

Doh, Il;Joe, Daniel J.;Kim, Sung Mok;Baik, Kyung Min;Kim, Yong Tae;Park, Seung Min
- Journal of Biomedical Engineering Research
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- v.43 no.3
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- pp.147-152
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- 2022
This research is to measure real-time temperature distribution inside a tissue-mimicking phantom for the safety and effectiveness evaluations of focused ultrasound (FUS) device capable of linear scanning stimulation. Since the focusing area of the FUS stimulation device is smaller than diameter of conventional thermal probe and keeps moving, it is impossible to monitor temperature distribution inside the phantom. By using the phantom with a thin film temperature sensor array inserted, real-time temperature change caused by the FUS device was measured. The translation of the measured temperature peak was also tracked successfully. The present phantom had been experimentally proven to be applicable to validate the performance and safety of the therapeutic ultrasound devices.
https://doi.org/10.9718/JBER.2022.43.3.147 인용 PDF KSCI