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Hwang, Seonwook,Kim, Jeong-Keun,Kim, In-Ho,Lim, Young-Hee Food Nutrition Press 2018 Journal of Food Biochemistry Vol.42 No.2
<P>Practical applicationsRamulus mori, a branch of Morus alba L., has been used as a traditional herb tea in Asia and is approved as a food source in South Korea, indicating it is safe. An ethanolic extract of R. mori containing oxyresveratrol (ERM) significantly suppresses lipid accumulation in 3T3-L1 adipocytes and inhibits adipogenesis. ERM shows a strong antioxidative activity. Adipogenesis is the process of adipocyte differentiation, which leads to lipid accumulation in obesity. Obesity is one of metabolic disorders and a major risk factor for various chronic diseases. Additionally, antioxidants can protect cells from damage caused by free radicals. Therefore, ERM could be developed as a health functional food to prevent obesity and many diseases caused by oxidative damage.</P>
Investigation of Sensor Performance in Accumulation- and Inversion-Mode Silicon Nanowire pH Sensors
Jieun Lee,Bongsik Choi,Seonwook Hwang,Jung Han Lee,Byung-Gook Park,Tae Jung Park,Dong Myong Kim,Dae Hwan Kim,Sung-Jin Choi Institute of Electrical and Electronics Engineers 2014 IEEE transactions on electron devices Vol. No.
<P>We investigate the performance of accumulation (ACC)-mode and inversion (INV)-mode silicon nanowire (SiNW) pH sensors that are electrically controlled by a liquid gate. The two sensing parameters of the changes of threshold voltage and current are explored in both types of SiNW pH sensors at different pH levels. As device dimensions and channel doping concentration increase, the performance of the ACC-mode biosensor degrades more rapidly than the performance of the INV-mode biosensor. Therefore, INV-mode SiNW pH sensors with a liquid gate could be robust to process variation and provide improved current sensitivity.</P>
Hagyoul Bae,Sungwoo Jun,Choon Hyeong Jo,Hyunjun Choi,Jaewook Lee,Yun Hyeok Kim,Seonwook Hwang,Hyun Kwang Jeong,Inseok Hur,Woojoon Kim,Daeyoun Yun,Euiyeon Hong,Hyojoon Seo,Dae Hwan Kim,Dong Myong Kim IEEE 2012 IEEE electron device letters Vol.33 No.8
<P>We propose a modified conductance method for extraction of the subgap density of states (DOS) in amorphous indium-gallium-zinc oxide thin-film transistors by using the measured capacitance and conductance through the capacitance-voltage (C-V) measurement. In the proposed method, the subgap DOS [g<SUB>A</SUB>(E)] is extracted from the frequency-dispersive C-V characteristics by localized traps in the active channel region. The extracted g<SUB>A</SUB>(E) shows a superposition of the exponential tail states and the exponential deep states over the bandgap (N<SUB>TA</SUB> = 3 × 10<SUP>18</SUP> cm<SUP>-3</SUP> · eV<SUB>-1</SUB>, N<SUB>DA</SUB> = 2.8 × 10<SUP>17</SUP> cm<SUP>-3</SUP> · eV-1, kT<SUB>TA</SUB> = 0.04 eV, and kT<SUB>DA</SUB> = 0.77 eV). We note that the gate-bias-dependent Cfree by free electron charges can be separated from C<SUB>loc</SUB> by localized trap charges through the proposed method.</P>