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301.
Kinetic rate constant for electron transfer between ferrous ions and novel Rusticyanin isoform in Acidithiobacillus ferrooxidans 总被引:1,自引:0,他引:1
Ida C Sasaki K Ando K Blake RC Saiki H Ohmura N 《Journal of Bioscience and Bioengineering》2003,95(5):534-537
Here we report the kinetic rate constant for electron transfer from ferrous ions to a novel rusticyanin isoform in Acidithiobacillus ferrooxidans. The second order rate constant for this isoform is shown to be approximately one half that of the previously known type, 0.09 M(-1)s(-1) vs. 0.14 M(-1)s(-1). 相似文献
302.
The rotational frequency noise (also known as the pulsation noise) due to the mistuning of impeller blade rows introduced at the manufacturing stage of the impellers is observed in the small-sized centrifugal compressor for automobile turbochargers. The present paper addresses the elucidation of the generating mechanism and parame- ter dependency such as the kind and degree of mistuning. In order to analyze numerically the rotational frequency noise due to mistuning, the unsteady computational fluid dynamics (CFD) of the whole compressor including vo- lute is executed, and the resultant time history of the pressure is fed into the spectral analysis. 相似文献
303.
Tanino T Ito T Ogino C Ohmura N Ohshima T Kondo A 《Journal of Bioscience and Bioengineering》2012,114(2):209-211
Four kinds of transporters, HXT1 and HXY7 from Saccharomyces cerevisiae, and GXF1 and GXS1 from Candida intermedia, were overexpressed in xylose-metabolizing S. cerevisiae harboring a xyloseisomerase-based pathway. Overexpression of transporter enhanced sugar consumption and ethanol production, and GXF1 was efficient for ethanol fermentation from both glucose and xylose. 相似文献
304.
Hemmi A Tabata M Homma T Ohno N Terada N Fujii Y Ohno S Nemoto N 《Journal of electron microscopy》2006,55(2):89-95
A case of elastofibroma in a middle-aged Japanese woman was examined by the quick-freezing and deep-etching (QF-DE) method, as well as by immunohistochemistry and conventional electron microscopy. The slowly growing tumor developed at the right scapular region and was composed of fibrous connective tissue with unique elastic materials called elastofibroma fibers. A normal elastic fiber consists of a central core and peripheral zone, in which the latter has small aggregates of 10 nm microfibrils. By the QF-DE method, globular structures consisting of numerous fibrils (5-20 nm in width) were observed between the collagen bundles. We could confirm that they were microfibril-rich peripheral zones of elastofibroma fibers by comparing the replica membrane and conventional electron microscopy. One of the characteristics of elastofibroma fibers is that they are assumed to contain numerous microfibrils. Immunohistochemically, spindle tumor cells showed positive immunoreaction for vimentin, whereas alpha-smooth muscle actin, desmin, S-100 protein and CD34 showed negative immunoreaction. By conventional electron microscopy, the tumor cell had thin cytoplasmic processes, pinocytotic vesicles and prominent rough endoplasmic reticulum. Abundant intracytoplasmic filaments were observed in some tumor cells. Thick lamina-like structures along with their inner nuclear membrane were often observed in the tumor cell nuclei. The whole image of the tumor cell was considered to be a periosteal-derived cell, which would produce numerous microfibrils in the peripheral zone of elastofibroma fibers. This study indicated that the QF-DE method could be applied to the pathological diagnosis and analysis of pathomechanism, even for surgical specimens obtained from a patient. 相似文献
305.
We achieved displacement metrology with a high-amplitude signal by using a rectangular phase grating as the pupil in a grating imaging system. The imaging phenomenon with a pupil transmission grating that has a bilevel profile with a 50% duty ratio is discussed on the basis of the optical transfer function. By optimizing the imaging condition, we obtained high-contrast images with high light power under a magnified or demagnified imaging system. The amplitude of the signal in the displacement measurement was four times higher than that of the conventional grating imaging system with amplitude gratings. 相似文献
306.
307.
Hisashi Kambe Nobuhiko Yamasaki Myeong Won Lee 《Computer Animation and Virtual Worlds》1994,5(4):265-279
This paper presents an interactive tool for designing and simulating textile images. It comprises a yarn editor, a textile editor and a texture mapper. These subsystems share a colour editor that can modify the colours of yarn and textile images interactively. We describe how yarn and textile images are generated, and how they are mapped to a target picture read from an image scanner. The user interface in the tool has many useful functions so that users can design textile images without knowledge of computer graphics and programming languages. Several examples of texture mapping are included. 相似文献
308.
309.
Yeoh Wen Liang Miyata Ryosuke Fukuda Osamu Yamaguchi Nobuhiko Okumura Hiroshi 《Artificial Life and Robotics》2023,28(3):553-559
Artificial Life and Robotics - To help ease the caregiving burden that comes with population aging, we proposed a bistable control system for walking-assist robots in which the transition between... 相似文献