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Your search keyword '"Hong, Jin-Hwan"' showing total 123 results
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123 results on '"Hong, Jin-Hwan"'

27. Assessment of androgen receptor agonistic/antagonistic effects on 25 chemicals in household applicants by OECD in vitro stably transfected transcriptional activation assays

Author

Lee, Hee-Seok, primary, Park, Eun-Jung, additional, Han, Songyi, additional, Oh, Gyeong-Yong, additional, Kang, Hui-Seung, additional, Suh, Jin-Hyang, additional, Shin, Min-Ki, additional, Oh, Hyun-Suk, additional, Hwang, Myung-Sil, additional, Moon, Guiim, additional, Koh, Young-Ho, additional, Park, Yooheon, additional, Hong, Jin-Hwan, additional, and Koo, Yong Eui, additional

Published
2018
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29. A comparison of adoption models for new mobile media services between high- and low-motive groups

Author

Lee, Jong Hyuk, Kim, Joon Ho, and Hong, Jin Hwan

Subjects
Cellular telephone services industry -- Services, User groups -- Surveys, Cellular telephones -- Surveys, Wireless telecommunications service, User group, Wireless telephone, Wireless voice/data device, Telecommunications industry
Abstract

Byline: Jong Hyuk Lee, Joon Ho Kim, Jin Hwan Hong This study aimed to explore what factors influence mobile media users' adoption of new services and whether the adoption models differ depending on users' motives to use mobile media. The decomposed Theory of Planned Behaviour (TPB) and uses and gratifications theory were used as theoretical frameworks. Methodologically, an online survey was conducted with 400 Korean mobile users and structural equation modelling was employed. As a result, the proposed model explained well users' adoption intention for new mobile services. Especially, high- and low-motive groups showed significant differences in terms of the influence of subjective norms and Perceived Behavioural Control (PBC).

Published
2010

33. Predictive model of Staphylococcus aureus growth on egg products.

Author

Choi, Won-Seok, Son, Nari, Cho, Jun-Il, Joo, In-Sun, Han, Jeong-A, Kwak, Hyo-Sun, Hong, Jin-Hwan, and Suh, Soo Hwan

Abstract

Egg products are widely consumed in Korea and continue to be associated with risks of Staphylococcus aureus-induced food poisoning. This prompted the development of predictive mathematical models to understand growth kinetics of S. aureus in egg products in order to improve the production of domestic food items. Egg products were inoculated with S. aureus and observe S. aureus growth. The growth kinetics of S. aureus was used to calculate lag-phase duration (LPD) and maximum specific growth rate (µmax) using Baranyi model as the primary growth model. The secondary models provided predicted values for the temperature changes and were created using the polynomial equation for LPD and a square root model for µmax. In addition, root mean square errors (RMSE) were analyzed to evaluate the suitability of the mathematical models. The developed models demonstrated 0.16–0.27 RMSE, suggesting that models properly represented the actual growth of S. aureus in egg products. [ABSTRACT FROM AUTHOR]

Published
2019
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34. Urinary benzophenone concentrations and their association with demographic factors in a South Korean population

Author

Kang, Hui-Seung, primary, Ko, Ahra, additional, Kwon, Ji-Eun, additional, Kyung, Min-Sik, additional, Moon, Gui Im, additional, Park, Jae-Hong, additional, Lee, Hee-Seok, additional, Suh, Jin-Hyang, additional, Lee, Jung-Mi, additional, Hwang, Myung-Sil, additional, Kim, Kisok, additional, Hong, Jin-Hwan, additional, and Hwang, In Gyun, additional

Published
2016
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37. Simultaneous analysis and exposure assessment of migrated bisphenol analogues, phenol, and p-tert-butylphenol from food contact materials.

Author

Bae, In-Ae, Lee, Chanyong, Lee, Subi, Choi, Jae Chun, Hong, Jin-Hwan, Kim, MeeKyung, Hwang, Joungboon, Park, Se-Jong, and Lee, Gaeho

Subjects
PACKAGING materials, BISPHENOLS, PHENOL, FOOD packaging, LIQUID chromatography-mass spectrometry
Abstract

A simple, rapid, and novel liquid chromatography tandem-mass spectrometry (LC-MS/MS) method was developed and validated to determine levels of eight bisphenol analogues (A, S, F, B, P, AF, AP, and Z), phenol, and p-tert-butylphenol migrated from food contact material (FCM) into food simulants. Method validation showed acceptable values in terms of linearity, precision, and accuracy. The limits of detection and quantification were 0.53-29.6 and 1.77-29.6 μg L−1, respectively. Water, 4% acetic acid, 50% ethanol, and n-heptane were employed as food simulants for the migration tests, and the proposed method was applied to 234 articles of 11 FCMs including polycarbonate, polyethersulfone, polypropylene, and polyethyleneterephthalate, obtained from domestic markets and manufacturers in Korea. Only phenol was found in the FCMs poly(cyclophexane-1,4-dimethylene terephthalate), polylactide, and thermoplastic polyurethane. Eight bisphenol analogues and p-tert-butyl phenol were not found in any samples. Using the obtained migration results, the estimated daily intake (EDI) of phenol was calculated. Exposure assessments were carried out to compare the EDI with the tolerable daily intake (TDI), showing a low percentage (0.18%) of the TDI reported. This is the first study to examine eight bisphenol analogues and two phenols simultaneously in FCMs using the LC-MS/MS. [ABSTRACT FROM AUTHOR]

Published
2018
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