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이경희,김기원,Lee, Kyung-Hee,Kim, Gi-Won 대한물리치료학회 2008 대한물리치료학회지 Vol.20 No.4
Purpose: To investigate the relationship between self-concept and mental health of physical therapy students. Methods: We recruited 179 currently enrolled college freshman, sophomores, and juniors studying physical therapy. The instruments used for this study were Rosenberg's Self-esteem Scale, Choi Chung Hoon's Perceeptual Orientation Scale, and the Mental Health Test modified by Lee. Results: The mean self-concept score was 3.97, a positive self concept, and the mean mental health score was 1.04. The mean dimension score for mental health ranged from: r=0.79$\sim$r=1.29. The relationship between self-concept and the mental health showed a negative correlation (r=-0.693, p<0.01). Conclusion: Modifications to the current program may improve self-concept and the mental health of physical therapy students.
Lee, Dong-Gi,Woong Park, Kee,Young An, Jae,Geol Sohn, Young,Ki Ha, Jung,Yoon Kim, Hak,Won Bae, Dong,Hee Lee, Kyung,Jun Kang, Nam,Lee, Byung-Hyun,Young Kang, Kyu,Joo Lee, Jeung Canadian Science Publishing 2011 Canadian journal of plant science. Revue canadienn Vol.91 No.2
<P> Lee, D.-G., Park, K. W., An, J. Y., Sohn, Y. G., Ha, J. K., Kim, H. Y., Bae, D. W., Lee, K. H., Kang, N. J., Lee, B.-H., Kang, K.-Y. and Lee, J. J. 2011. Proteomics analysis of salt-induced leaf proteins in two rice germplasms with different salt sensitivity. Can. J. Plant Sci. 91: 337-349. This study was conducted to investigate salt-stress-related physiological responses and proteomics changes in the leaves of two rice (Oryza sativa L.) cultivars. Shoot growth and water content of rice leaves were more severely reduced in Dalseongaengmi-44 than in Dongjin under salt stress. The salt-sensitive Dalseongaengmi-44 exhibited a greater increase in sodium ion accumulation in its leaves than the salt tolerant Dongjin. Comparative analysis of the rice leaf proteins using two-dimensional gel electrophoresis (2-DGE) revealed that a total of 23 proteins were up-regulated under salt stress. Based on matrix-assisted laser desorption ionization-time of flight mass spectrometry and/or electrospray ionization-tandem mass spectrometry analyses, the 23 protein spots were found to represent 16 different proteins. Ten of the identified proteins were previously reported to be salt-responsive proteins, while six, class III peroxidase 29 precursor, beta-1,3-glucanase precursor, OSJNBa0086A10.7 (putative transcription factor), putative chaperon 21 precursor, Rubisco activase small isoform precursor and drought-induced S-like ribonuclease, were novel salt-induced proteins. Under salt stress, fragmentation was increased in several proteins containing the Rubisco large chain. The results of these physiological and proteomics analyses provide useful information that can lead to a better understanding of the molecular basis of salt-stress responses in rice. </P>
Lee, Jung Il,Kim, Kyeong Il,Yoo, Sung Woong,Lee, Young Geun,Kim, Whan Gi,Jung, Mie Won,Hong, Tae Whan Trans Tech Publications, Ltd. 2011 Materials science forum Vol.695 No.-
<P>Hydrogen energy had recognized clean systems and high energy carrier. Mg and Mg-based materials have been lightweight and low cost materials which had been 7.6wt.% hydrogen capacity. However, Mg and Mg-alloys were currently hinder by its high absorption/desorption temperature, and very slow reaction kinetics. Therefore, one of the most methods to improve kinetics focused on addition transition metal oxide. Addition to transition metal oxide in MgHxpowder produce MgHx-metal oxide composition by mechanical alloy and it analyze XRD, EDS, TG/DSC, SEM, and PCI. This report considers kinetics by transition metal oxide rate and hydrogen pressure. In this research, we can see behavior of hydriding/dehydriding profiles by addition catalyst (transition metal oxide). MgHx-5wt.%Fe2O3composite was measured most high hydrogen capacity and fast kinetics.</P>
Lee, Jeong-Ah,Kim, Sa-Hyun,Lee, Sang-Koan,Kim, Gi-Cheol,Oh, Hye-Won,Jung, Tae-Nam,Lee, Yang-Soo,Jung, Chang-Jin,Jang, Won-Hyuck The Korean Society of Veterinary Service 2007 韓國家畜衛生學會誌 Vol.30 No.2
The slaughter process for cattle will inevitably transfer some bacteria onto the carcasses. The goal of food safety programs is to minimize and effectively remove this contamination. This study was attempted by the Verif $EYE^{TM}$ machine-vision technology that might be useful for reducing microbial indicator counts and could reduce the contamination chance of E coli O157:H7 and Salmonella spp on beef carcasses. For the evaluation of the effectiveness of the Verif $EYE^{TM}$ technology, 80 samples were examined by the inspection device over 15 days. On an examination of FDS-positive samples compared to negative controls from the same carcasses, aerobic plate counts were bigger than the negative control samples (5.26 vs 4.60 log). Enterobacteriaceae counts were greater on the positive samples than the corresponding negative control samples (2.07 vs 1.17log). There was a consistent correlation between samples detected by the Verif $EYE^{TM}$ system with detectable counts. For example, 100% of positive samples had detectable APC and 91.2% of positive samples had detectable TCC. Therefore, if areas detected as positive for contamination by the Verif $EYE^{TM}$ system were removed from the carcasses, significant sources of microbial contamination will be reduced for objective compliance with HACCP. This results suggest that the use of Verif $EYE^{TM}$ machine-vision technology might be useful for reducing microbial indicator counts (APC, TCC) and could help reduce the risk of presence of E coJi O157:H7 and Salmonella spp on Beef carcasses.
Investigation on the Behavior of Stacked Devices Within Output Drivers Under ESD Conditions
Gi-Doo Lee,Jung-Hoon Chun,Shuqing Cao,Beebe, S. G.,Kee-Won Kwon,Dutton, R. W. Institute of Electrical and Electronics Engineers 2012 IEEE transactions on electron devices Vol. No.
<P>This work investigates the robustness of a stacked or cascoded driver under electrostatic discharge (ESD) events. Using output driver circuits in an actual I/O system with predrivers and rail-based power clamps, the impacts of all possible predriver connections and stacked-driver sizing are examined with the very fast transmission line pulse. It is verified that, when the input of the predriver connected to the top MOSFET is grounded, the failure current (<I>IT</I>2) is improved by ~ 110%, compared to the worst case where both predriver inputs are tied to VDD. Also, a simple trigger circuit which guarantees the electrical connection for better ESD immunity is proposed.</P>
Energy Economics of Nuclear and Coal Fired Power Plant
Lee, Gi-Won,Cho, Joo-Hyun,Kim, Seong-Rae,Park, Hae-Yun Korean Nuclear Society 1995 Nuclear Engineering and Technology Vol.27 No.3
The upturn of Korean nuclear power program can be considered to have started in early 70's while future plants for the construction of new nuclear power plane virtually came to a halt in United States. It is projected that power plant systems from combination of nuclear and coal fired types might shift to all coal fired type, considering the current trend of construction on the new Plants in the United States. However, with the depletion of natural resources, it is desirable to understand the utilization of two competitive utility technologies in terms of invested energy. Presented in this paper is a comparison between two systems, nuclear power plant and coal fired steam power plant in terms of energy investment. The method of comparison is Net Energy Analysis (NEA). In doing so, Input-Output Analysis (IOA) among industries and commodities is done. Using these information, net energy ratios are calculated and compared. NEA is conducted for power plants in U. S. because the availability of necessary data are limited in Korea. Although NEA does not offer conclusive solution, this method can work as a screening process in decision making. When considering energy systems, results from such analysis can be used as a general guideline.
Lee, Jeong-Min,Jang, Gi-Chul,Lee, John-Tae,Park, Jin-Won,Kim, Do-Yeon,Kim, Hyo-Keun,Hwang, Keon-Joong,Min, Young-Keun The Korean Society of Tobacco Science 2006 한국연초학회지 Vol.28 No.2
This study was conducted to determine the amount of unprotonated nicotine in cigarette mainstream smoke and to investigate its relationship to level of filter ventilation and machine smoking conditions. Unprotonated nicotine from TPM trapped on a Cambridge filter pad(CFP) was adsorbed by Carboxen/PDMS SPME fiber, thermally desorbed and determined by GC/MS. 2R4F reference cigarette, twelve commercial brands from the Korean market and five test cigarette samples, which had the same tobacco blend with different levels of filter ventilation, were analyzed for unprotonated nicotine. In commercial brands, the amount of unprotonated nicotine changed slightly depending on the pH values of smoke, and decreased as the tar level increased. filter ventilation in these commercial cigarettes was $28{\sim}80%$ and the higher filter ventilation increased relative unprotonated nicotine levels, but not significantly. However, in five test cigarettes with different filter ventilation$(0{\sim}70%)$, unprotonated nicotine levels increased almost linearly with the level of filter ventilation. Concentrations of unprotonated nicotine in mainstream smoke generally increased in order $HC\;<\;ISO\;{\leq}\;MDPH$ machine smoking conditions. The ratio of unprotonated nicotine to total nicotine among $cigarettes({\alpha}_{fb})$ increased in order RC < MDPB < ISO conditions. Concentrations of unprotonated nicotine varied with three machine smoking conditions.