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전현지,최진일,Jeon, Hyunji,Choi, Jinnil 한국재료학회 2020 한국재료학회지 Vol.30 No.12
Irradiation of the metal nanoparticles causes local plasmon resonance in a specific wavelength band, which can improve the absorption and scattering properties of a structure. Since noble metal nanoparticles have better resonance effects than those of other metals, it is easy to identify plasmonic reactions and this is advantageous to find the optical tendency. Compared to having a particle gap or randomly arranged particle structures, densely and evenly packed structures can exhibit more uniform optical properties. Using the uniform properties, the structure can be applied to optical filtering applications. Therefore, in this paper, validation tests about metal nanoparticles and thin film structures are conducted for more accurate analysis. The optical properties of monolayer and bilayer noble metal nanoparticle structures with different diameters, packed in a uniform array, are investigated and their optical trends are analyzed. In addition, a thin film structure under identical conditions as metal nanoparticle structure is evaluated to confirm the improved optical characteristics.
시각적 되먹임을 이용한 배가로근 수축이 건강한 성인의 폐기능에 미치는 효과
윤형선 ( Hyungseon Yun ),김수현 ( Suhyeon Kim ),전현지 ( Hyunji Jeon ),이병준 ( Byungjoon Lee ) 대한통합의학회 2016 대한통합의학회지 Vol.4 No.2
Purpose : The purpose of this study was to investigate the effects of transverse abdominal muscle contraction on pulmonary function in supine position. Methods : 10 female and 10 male college students were recruited this study. Pulmonary Function test was measured with QUARK SPIRO. To check the changes in lung function with transverse abdominal muscle contraction, we tested pulmonary function in the supine, with and without transverse abdominal muscle contraction. While the transverse abdominis was activating, we investigate in the change of forced expiration. All statistical analyses were performed using SPSS Statistics VER.12.0 for window version p-values less than 0.05 were used to identify significant differences. Statistical analysis was used Paired t-test to know difference between activated and non-activated TrA of forced expiration. Results : The subject with transverse abdominal muscle contraction showed significant increments in variable of FVC, FEV1, PEF compared to the pre-intervention results (p<0.01). Conclusion : These results indicate that spontaneous contraction of the TrA helps pulmonary function. And the selective contraction of the transverse abdominis at the end of forced inspiration makes increases in the lung capacity.