• Title/Summary/Keyword: KT

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Measurement Uncertainty for Analysis of Volatile Organic Compound in Cigarette Mainstream Smoke (담배 연기 중 휘발성 유기물질 분석에 대한 측정 불확도 산출)

  • Ka, Mi-Hyun;Cho, Sung-Eel;Kim, Mi-Ju;Lee, Chul-Hee;Ji, Sang-Un;Jeong, Jong-Soo;Kim, Yong-Ha;Min, Young-Keun
    • Journal of the Korean Society of Tobacco Science
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    • v.28 no.2
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    • pp.144-151
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    • 2006
  • A measurement uncertainty for analysis of volatile organic compound (benzene) in cigarette mainstream smoke was carried out. In this study one point re-calibration method was used to estimate uncertainty for benzene. The measurement uncertainty was calculated based on the uncertainty sources of each analysis step, quality appraisal sources, drift and repeatability. As a result, the concentration and expanded uncertainty of benzene in cigarette mainstream smoke were measured as $38.08{\pm}4.36{\mu}g/cig$. Relative uncertainty of drift and repeatability obtained were 5% and 3%, respectively.

Analysis of Aromatic Amines in Mainstream Cigarette Smoke Using Solid-Phase Extraction (Solid-Phase Extraction을 이용한 담배연기 중 Aromatic Amino의 분석)

  • Kim, Ick-Joong;Lee, John-Tae;Lee, Jeong-Min;Min, Hye-Jeong;Jang, Gi-Chul;Kim, Hyo-Keun;Hwang, Keon-Joong;Min, Young-Keun
    • Journal of the Korean Society of Tobacco Science
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    • v.28 no.2
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    • pp.152-157
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    • 2006
  • A new procedure has been developed for the quantitation of aromatic amines in mainstream cigarette smoke. Two solid-phase extraction (SPE) clean up steps, using a different retention mechanisms, are required to process the samples. The first step used a cation-exchange cartridge, followed by a second step that used a cartridge with a hydrophobic retention character. The aromatic amines eluted from the second SPE cartridge are derivatized with pentafluoropropionic anhydride. This new method have advantages over other reported techniques, being sensitive, robust, and easily automated. The detection limits were ranged from 0.12 ng/mL for 1-aminonaphthalene to 0.16 ng/mL for 3-aminobiphenyl and the recoveries were from 97 to 106%. Compared with other reports for analysis of 2R4F reference cigarette, this method shows a close analytical data and good repeatability.

Effects of Kinesio Taping on Balance and Gait in Patients with Stroke: A Systematic Review and Meta-Analysis of Studies in Korea

  • Kim, Byeong Geun;Cho, Woon Su;Kim, Yong Seong
    • The Journal of Korean Physical Therapy
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    • v.33 no.1
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    • pp.21-27
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    • 2021
  • Purpose: The objective of this study was to investigate the effects of Kinesio taping (KT) for balance and gait in patients with stroke through meta-analysis of studies conducted in Korea. Methods: RISS, Science on, and DBPia were the three databases used to collect articles on KT. Keywords such as "Stroke," "Kinesio taping," "Elasticity taping," and "Taping" were used to search for published articles. We systematically searched from the inception of each database to November 2020. Interventions and comparisons were KT and without KT. Outcome measures were the timed up and go (TUG) and 10-meter walking tests (10MWT). Consequently, six studies were selected for the second screening using meta-analyses. Results: Based on the results of the meta-analysis, comparison between patients with and without KT showed that KT was effective for TUG (ES: 2.51, 95% CI: 2.12 to 2.90); however, it was not effective for 10MWT (ES: 0.79, 95% CI: -0.04 to 1.62). Conclusion: The current evidence suggests that KT is more effective than without KT interventions for balance function in post-stroke patients. However, more well-conducted randomized controlled trials are required in the future.

Determination of selenium in milk powder by octopole reaction cell ICP-MS (Octopole Reaction Cell이 장착된 ICP-MS에 의한 분유 중 셀레늄의 정량)

  • Cho, Sung-Eel;Kim, Mi-Ju;Kim, Yong-Ha;Min, Young-Keun;Kim, Young-Sang
    • Analytical Science and Technology
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    • v.19 no.3
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    • pp.203-210
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    • 2006
  • The determination of trace selenium in milk powder has been studied by octopole reaction cell(ORC)-ICP-MS. The interferences by polyatomic ions and other concomitant molecular species could be removed remarkably by using $H_2$ as reaction gas in ORC. Compared to the normal mode (no cell gas), the $H_2$ cell gas mode improved the accuracy and precision. The quantitative result was average 102.7% and it was slightly higher than certified standard value of milk powder and the RSD was 7.6%.

Effects of Reconstituted Tobacco Sheet contents and Ventilation on the Smoke delivery and the Burning Temperature (판상엽 배합비와 공기희석율이 제품담배 연기성분 및 연소온도 변화에 미치는 영향)

  • Sung, Yong-Joo;Han, Young-Lim;Baek, Shin;Kim, Shi-Mong;Jeh, Byong-Kwon;Oh, In-Hyeog;Lee, Chang-Kook;Kim, Soo-Ho;Shin, Chang-Ho;Kim, Kun-Soo
    • Journal of the Korean Society of Tobacco Science
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    • v.30 no.2
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    • pp.103-108
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    • 2008
  • The application of RECON(Reconstituted tobacco sheet) and the ventilation technology has been considered as very useful methods for controlling the tar and nicotine deliveries in modern blended tobacco. In this study, the effects of RECON contents in simulated blends on the smoke delivery and burning temperature were evaluated in three different ventilation levels. The ventilation showed a great influence on the burning temperature and smoke deliveries. The nicotine, tar and CO deliveries was greatly reduced by the ventilation. The amount of RECON showed the minor impacts on the smoke delivery. In high ventilation level such as 85 % ventilation, there was no distinct change in smoke deliveries by the amount of RECON.