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Fourier 변환 모아레 간섭에 의한 이차원적 변형률 해석
韓應敎,森本 吉春,嶋田 泰造,朴斗源 한국비파괴검사학회 1992 한국비파괴검사학회지 Vol.12 No.1
Moire interferometry using a diffraction grating and a laser is a powerful technique for analizing small deformation of a specimen. In the method, the x and y-directional fringe patterns are obtained by using the x and y-directional sets of two beams. If the both sets of two beams are simultaneously incident to the specimen, the x and y-directional fringe patterns are super imposed. In the case, it is difficult to separate each directional fringe pattern. Therefore each fringe pattern has been separately recorded by selecting each set of two beams. In order to analyze a two-dimensional strain changing with time, Moire interferometry using the two-dimensional fourier transform method is proposed and the x and y-directional fringes are separated. By this method, the thermal deformation of a glass plate is analyzed.
푸리에 변환을 이용한 미스얼라인된 Moire 무늬의 표준화
森本吉春,박두원 韓國非破壞檢査學會 1995 한국비파괴검사학회지 Vol.15 No.2
시편의 미소 변형을 측정하는 Moire법의 한 응용 방법인 미스얼라이먼트법을 이용하여 발생된 화상을 푸리에 변환에 의하여, 주파수 함수로 전환시킨 후 표준화 이론을 적용하여 시편의 변형을 Moire 무늬로 설명하고, 이를 뒷받침하는 식들을 유도하였다. 특히, 미스얼라이인먼트법에서 발생되는 무늬의 회전 현상이나 무늬 개수의 증가를 설명하고 이에 관련된 식들을 얻었다. 또한 무늬 차수와 변형율과의 상관 관계를 보여주는 식을 주파수 벡터법과 기하학적인 방법으로 각각 유도하여, 이들 두식이 통상의 Moire법에서도 적용가능한 보다 유용한 식임을 확인하였다. The fringes developed by misalignment, an application of Moire method measuring small deformation of speciman, was transformed to frequency function. After that, theory of normalization was applied to derive the equations explaining the relation of the deformation and Moire fringes. Above all, the equations were produced to explain the rotation and increasing of fringes. In addition to that, the relation of fringe number and strain was illustated with the equations deduced from frequency function and geometrical method respectively. These two expressions more effective than the used ones owing to the one can accommodate the other.
K. Tahara,Y. Fukuda,G. Wakabayashi,H. Ban,Y. Morimoto,M. Yoshioka,K. Kiyohara,Y. Koba,H. Iwamoto,Y. Uozumi,N. Matsufuji 한국물리학회 2011 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.59 No.23
We measured proton-production double differential cross sections (DDXs) by 290 MeV/u carbon beams on carbon, copper, lead targets at forward angles. The proton energies were measured with the spectrometer which consisted of GSO(Ce) crystals and plastic scintillators. The measured DDXs were compared with the calculated ones with PHITS code. The simulation results generally agreed with the measured ones. The measured results will be useful as the benchmark of existing simulation codes and for the future improvements.
Nishiyama, N.,Nakagishi, Y.,Morimoto, Y.,Lai, P.S.,Miyazaki, K.,Urano, K.,Horie, S.,Kumagai, M.,Fukushima, S.,Cheng, Y.,Jang, W.D.,Kikuchi, M.,Kataoka, K. Elsevier Science Publishers 2009 Journal of controlled release Vol.133 No.3
Photodynamic therapy (PDT) is a promising method for the localized treatment of solid tumors. In order to enhance the efficacy of PDT, we have recently developed a novel class of photosensitizer formulation, i.e., the dendrimer phthalocyanine (DPc)-encapsulated polymeric micelle (DPc/m). The DPc/m induced efficient and unprecedentedly rapid cell death accompanied by characteristic morphological changes such as blebbing of cell membranes, when the cells were photoirradiated using a low power halogen lamp or a high power diode laser. The fluorescent microscopic observation using organelle-specific dyes demonstrated that DPc/m might accumulate in the endo-/lysosomes; however, upon photoirradiation, DPc/m might be promptly released into the cytoplasm and photodamage the mitochondria, which may account for the enhanced photocytotoxicity of DPc/m. This study also demonstrated that DPc/m showed significantly higher in vivo PDT efficacy than clinically used Photofrin<SUP>(</SUP>R) (polyhematoporphyrin esters, PHE) in mice bearing human lung adenocarcinoma A549 cells. Furthermore, the DPc/m-treated mice did not show skin phototoxiciy, which was apparently observed for the PHE-treated mice, under the tested conditions. These results strongly suggest the usefulness of DPc/m in clinical PDT.
Hybrid Capacitors Using Organic Electrolytes
Morimoto, T.,Che, Y.,Tsushima, M. The Korean Electrochemical Society 2003 한국전기화학회지 Vol.6 No.3
Electric double-layer capacitors based on charge storage at the interface between a high surface area activated carbon electrode and an electrolyte solution are characterized by their long cycle-life and high power density in comparison with batteries. However, energy density of electric double-layer capacitors obtained at present is about 6 Wh/kg at a power density of 500W/kg which is smaller as compared with that of batteries and limits the wide spread use of the capacitors. Therefore, a new capacitor that shows larger energy density than that of electric double-layer capacitors is proposed. The new capacitor is the hybrid capacitor consisting of activated carbon cathode, carbonaceous anode and an organic electrolyte. Maximum voltage applicable to the cell is over 4.2V that is larger than that of the electric double-layer capacitor. As a result, discharged energy density on the basis of stacked volume of electrode, current collector and separator is more than 18Wh/l at a power density of 500W/l.