Sendai, Miyagi, Japan

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    ABSTRACT: Photoacoustic (PA) signal is very sensitive to noise generated by peripheral equipment such as power supply, stepping motor or semiconductor laser. Band-pass filter is not effective because the frequency bandwidth of the PA signal also covers the noise frequency. The objective of the present study is to reduce the noise by using an adaptive spatial filter with principal component analysis (PCA).
    Physics Procedia 12/2015; 70:1161-1164. DOI:10.1016/j.phpro.2015.08.249
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    ABSTRACT: The γ’ solvus temperature, the microhardness and the martensitic transformation temperatures were examined for the Fe-Ni-Co-Al-based shape memory alloys. It was found that Fe-28Ni-17Co-11.5Al-2X (X=Ti, Nb and Ta) alloys have a relatively high γ’ solvus temperature and that they show high hardness when aged at 600°C, especially in the case of Ta alloys. Alloy compositions to obtain a high hardness, a small transformation hysteresis and complete reversible transformation were evaluated as being Ni>28%, Co>13%, Al>10% and Ta>2.5%, and the most suitable aging temperature was 600°C. Grain boundary precipitation of the NiAl-B2 phase was found to be suppressed by the addition of over 0.03 at.% boron.
    12/2015; 2:S485-S492. DOI:10.1016/j.matpr.2015.07.333
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    ABSTRACT: Resonance Raman spectra of azobenzene derivatives were examined in the presence of lipid membranes to find a probe that can distinguish different membrane phases. The NO2 symmetric stretching band of 4-(4-nitrophenylazo)aniline, also known as Disperse Orange 3 (DO3), is downshifted by about 4cm−1 on the phase transition of phosphatidylcholine membranes from the liquid crystalline to the gel phase. A comparable downshift also occurs when DO3 is bound to cholesterol-containing membranes in the liquid-ordered phase. Our results demonstrate that Raman spectrum of DO3 is a unique tool for measuring the molecular order of lipids in membranes.
    FEBS Open Bio 10/2015; DOI:10.1016/j.fob.2015.10.008


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    Seiryo-machi 2-1, Aoba-ku, 980-8575, Sendai, Miyagi, Japan
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