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박상신,민태진 ( Sang Shin Park,Tae Jin Min ) 생화학분자생물학회 1991 BMB Reports Vol.24 No.1
The activity changes of the mitochondrial ATP synthase and ATPase illuminated with near-UV lights (300-400 nm) have been observed and the effects of FAD and NADH on the light activation of the enzyme have been investigated in mitochondria of Lentinus edodes. The mitochondrial ATP synthase and ATPase were stimulated by the illuminations of 330 nm and 380 nm, but inhibited by 350 nm and 330 nm compared with dark control group, respectively. FAD, a flavin, induced the activation of the mitochondrial ATP synthase by the liiumantions of activation (470 nm) and inhibition (350 nm) wavelengths. It, however, inhibited the activity of mitochondrial ATPase by the illuminations of activations (680 nm) and inhibition (330 nm) wavelengths. The activity of the mitochondrial ATP synthase which had been treated with flavin inhibitor such as phenylacetic acid (PAA) or potassium iodide (KI), was inhibited by 470 nm illumination. But, when the mitochondrial ATPase was illuminated with 680 nm in the presence of PAA or KI, the activity of it did not change. The activities of the enzyme with NADH were not affected by the illuminations of activation and inhibition wavelengths. From these results, it is suggested that a endogeneous flavoprotein serves as the photorecptor for blue light activation of the mitochondrial ATP synthase in L. edodes.
박상신,이승렬,Park, Sang-Shin,Lee, Seung-Ryoul 한국트라이볼로지학회 2007 한국트라이볼로지학회지 (Tribol. Lubr.) Vol.23 No.3
A scroll compressor is on the increase in the use for the cooling and ambition machinery because of the advantages about high efficiency, low vibration and low noise. The design of thrust bearing for scroll compressor has depended on the experience. The lubrication considering the squeeze flow was applied for high side shell and low side shell of scroll thrust bearing. This work was based on governing fluid lubrication equation at the general coordinate. It shows the behavior for an orbiting scroll with direct numerical analysis using FDM. This study obtained the theoretical design value by finding load capacity and tilting angle of an orbiting scroll for thrust bearing in a scroll compressor. Especially this work performed the analysis about the design parameter. The program was written using Visual C++ to enhance user to change the design parameter easily. In particular the result value and the pressure profile were displayed as windows in every step for user to understand without difficulty.