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91.
Yamauchi K Yamamura K Mimura H Sano Y Saito A Endo K Souvorov A Yabashi M Tamasaku K Ishikawa T Mori Y 《Applied optics》2005,44(32):6927-6932
The intensity flatness and wavefront shape in a coherent hard-x-ray beam totally reflected by flat mirrors that have surface bumps modeled by Gaussian functions were investigated by use of a wave-optical simulation code. Simulated results revealed the necessity for peak-to-valley height accuracy of better than 1 nm at a lateral resolution near 0.1 mm to remove high-contrast interference fringes and appreciable wavefront phase errors. Three mirrors that had different surface qualities were tested at the 1 km-long beam line at the SPring-8/Japan Synchrotron Radiation Research Institute. Interference fringes faded when the surface figure was corrected below the subnanometer level to a spatial resolution close to 0.1 mm, as indicated by the simulated results. 相似文献
92.
Masako Kashiwagi Tatsuo Saishu Kazuki Taira Hitoshi Kobayashi Yuzo Hirayama 《Journal of the Society for Information Display》2009,17(12):1023-1029
Abstract— An integral imaging time‐division‐multiplexing 18‐view 3‐D display based on the one‐dimensional integral‐imaging (1‐D‐II) technique using a 9‐in. OCB‐LCD, lenticular sheet, and active shutter has been developed. By simulating a lens shape and a shutter structure and analyzing the light‐beam profile of the increasing‐parallax‐number region to find the best conditions, depth range, and viewing angle were an enhanced and a brighter and flicker‐less 3‐D image with smooth motion parallax was obtained. 相似文献
93.
A close relation has been found between hydrogen evolution from coal-catalyst and pitch-catalyst systems and catalytic activities of liquefaction reactions. A MoO3?TiO2 catalyst has the highest activity and the order of activity of the catalysts for hydrogen evolution is: MoO3?TiO3> MoO3?SiO2>10% . The same trend was observed for benzene-soluble materials for the hydrocracking of Akabira Coal. 相似文献
94.
Aiko Nagai Yuta Shibamoto Masanori Yoshida Koichi Wakamatsu Yuzo Kikuchi 《International journal of molecular sciences》2014,15(4):6910-6924
This study investigated the clinical outcomes of a 4-fraction stereotactic radiotherapy (SRT) study using helical tomotherapy for brain metastases. Between August 2009 and June 2013, 54 patients with a total of 128 brain metastases underwent SRT using tomotherapy. A total dose of 28 or 28.8 Gy at 80% isodose was administered in 4 fractions for all tumors. The mean gross tumor volume (GTV) was 1.9 cc. Local control (LC) rates at 6, 12, and 18 months were 96%, 91%, and 88%, respectively. The 12-month LC rates for tumors with GTV ≤0.25, >0.25 and ≤1, and >1 cc were 98%, 82%, and 93%, respectively; the rates were 92% for tumors >3 cc and 100% for >10 cc. The 6-month rates for freedom from distant brain failure were 57%, 71%, and 55% for patients with 1, 2, and ≥3 brain metastases, respectively. No differences were significant. No major complications were observed. The 4-fraction SRT protocol provided excellent tumor control with minimal toxicity. Distant brain failure was not so frequent, even in patients with multiple tumors. The results of the current study warrant a prospective randomized study comparing single-fraction stereotactic radiosurgery (SRS) with SRT in this patient population. 相似文献
95.
Hong-Tao Sun Minoru Fujii Noriko Nitta Minoru Mizuhata Hidehiro Yasuda Shigehito Deki Shinji Hayashi 《Journal of the American Ceramic Society》2009,92(4):962-966
Nickel-doped forsterite (Ni2+ :Mg2 SiO4 ) nanocrystals have been synthesized by a facile molten-salt approach in the presence of NaCl and a surfactant (NP-7.5). The products were characterized by X-ray diffraction, transmission electron microscopy (TEM), high-resolution TEM, selected area electron diffraction (SAED), and luminescence spectra measurements. The crystal size could be controlled by tailoring the synthesis parameters. TEM, high-resolution TEM, and SAED results revealed the single crystalline character of Mg2 SiO4 nanoparticles. A possible model for the growth of Ni2+ :Mg2 SiO4 nanocrystals was postulated. The obtained Ni2+ :Mg2 SiO4 nanocrystals show strong, super broad, near-infrared luminescence at room temperature. These doped Mg2 SiO4 nanocrystals are promising gain mediums for super broadband optical amplification. 相似文献
96.
Yuzo Nishizaki Naoko Sato-Masumoto Aki Yokota Tsuyoshi Mikawa Koichi Nakashima Taichi Yamazaki 《Food additives & contaminants. Part A, Chemistry, analysis, control, exposure & risk assessment》2018,35(5):838-847
To accurately determine carminic acid (CA) and its derivative 4-aminocarminic acid (4-ACA), a novel, high-performance liquid chromatography with photodiode array detector (HPLC/PDA) method using relative molar sensitivity (RMS) was developed. The method requires no analytical standards of CA and 4-ACA; instead it uses the RMS values with respect to caffeine (CAF), which is used as an internal standard. An off-line combination of 1H-quantitative nuclear magnetic resonance spectroscopy (1H-qNMR) and HPLC/PDA was able to precisely determine the RMSs of CA274nm/CAF274nm and 4-ACA274nm/CAF274nm. To confirm the performance of the HPLC/PDA method using RMSs, the CA and 4-ACA contents in test samples were tested using four different HPLC-PDA instruments and one HPLC-UV. The relative standard deviations of the results obtained from five chromatographs and two columns were less than 2.7% for CA274nm/CAF274nm and 1.1% for 4-ACA274nm/CAF274nm. The 1H-qNMR method was directly employed to analyse the CA and 4-ACA contents in test samples. The differences between the quantitative values obtained from both methods were less than 5% for CA and 3% for 4-ACA. These results demonstrate that the HPLC/PDA method using RMSs to CAF is a simple and reliable quantification method that does not require CA and 4-ACA certified reference materials. 相似文献
97.
Kenji Takahara Shingo Ohsaki Yuzo Itoh Kazuhiro Ohyama Hideki Kawaguchi 《Electrical Engineering in Japan》2009,166(3):94-100
This paper describes the design and trial manufacture of a linear generator which can convert any mechanical vibration of an automobile to electrical energy. A mover, which includes permanent magnets, is linearly driven through a stator by vibrations. The Nd‐Fe‐B magnets in the mover are placed facing the same magnetic poles in order to produce a change of magnetic flux in the coils of the stator. The coils are placed in the stator with the same intervals as the magnets. Successive coils are wound in opposite directions and are connected in series. A magnetic iron core covering the stator makes the magnetic flux extend through the case and reduces flux canceling in the coils of the stator. The distribution of the magnetic field, the electromotive force, and the driven power of the mover were calculated by numerical simulations in order to determine the size of the linear generator. A linear generator and experimental apparatus were built on the basis of the simulation. The performance characteristics were tested in experiments, and the produced linear generator was confirmed to be useful as an onboard auxiliary power supply. © 2008 Wiley Periodicals, Inc. Electr Eng Jpn, 166(3): 94– 100, 2009; Published online in Wiley InterScience ( www.interscience.wiley.com ). DOI 10.1002/eej.20751 相似文献
98.
Komei Kato Akiko Yamamoto Shojiro Ochiai Masahiro Wada Yuzo Daigo Koichi Kita Kenichi Omori 《Materials science & engineering. C, Materials for biological applications》2013,33(5):2736-2743
Novel 316 L stainless steel (SS) foam with 85% porosity and an open pore diameter of 70–440 μm was developed for hard tissue application. The foam sheet with a 200-μm diameter had superior cell proliferation and penetration as identified through in vitro experiments. Calcification of human osteosarcoma cells in the SS foam was observed. Multi-layered foam preparation is a potential alternative technique that satisfies multi-functional requirements such as cell penetration and binding strength to the solid metal. In tensile tests, Young's modulus and the strength of the SS foam were 4.0 GPa and 11.2 MPa respectively, which is comparable with human cancellous bone. 相似文献
99.
Leo Miyashita Yuzo Takayama Tatsuya Haga Takafumi Suzuki Kunihiko Mabuchi 《IEEJ Transactions on Electrical and Electronic Engineering》2013,8(Z1):S108-S109
In this article, in order to propose the effective and low‐intensity stimulation method for cardiomyocyte, electric field stimulation was applied to cultured cardiomyocytes, and its responses were recorded and analyzed in term of applied timing by calcium imaging. As a result, we confirmed that electric field stimulation after peak of calcium transients (late‐phase stimulation) lengthened the full width at third maximum of calcium transient cycles temporarily. By optimizing the applied timing, electric field stimulation would be more effective method for controlling cardiomyocyte dynamics. © 2013 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc. 相似文献
100.
Murata A Oka N Nakamura S Shigesato Y 《Journal of nanoscience and nanotechnology》2012,12(6):5082-5086
Visible-Light active photocatalytic tungsten trioxide (WO3) films were deposited at a substrate temperature of 800 degrees C by dc reactive magnetron sputtering using a W metal target. In addition, Platinum (Pt) was deposited on the WO3 film surfaces at room temperature, also by sputtering. In the early stages of Pt growth, formation of Pt nanoparticles could be expected because of the island structure observed in Volmer-Weber-type growth mode. The surface coverage of Pt on the WO3 films was estimated quantitatively by X-ray photoelectron spectroscopy and was found to be approximately 60% after 7 s deposition. High resolution electron microscopy (HREM) demonstrated that Pt nanoparticles with a diameter of about 2.5 nm were generated and dispersed uniformly on the entire surface area of the columnar polycrystalline WO3 films. These Pt-loaded films exhibited high photocatalytic activity in the decomposition of acetaldehyde (CH3CHO) under visible light irradiation. 相似文献