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131.
Shin-ichiro Fujita Nobuhiro Iwasa Hiroaki Tani Wataru Nomura Masahiko Arai Nobutsune Takezawa 《Reaction Kinetics and Catalysis Letters》2001,73(2):367-372
For the title reaction, Cu/ZnO catalysts prepared from aurichalcite were more active than those prepared from other precursors.
Selectivity to ethyl acetate over Cu/ZnO was much higher than that over Cu/SiO2
This revised version was published online in June 2006 with corrections to the Cover Date. 相似文献
132.
Nobukatsu Moridera Miki Yamamoto Wataru Okumura Masao Sugawara 《Analytical sciences》2007,23(1):39-44
A biotinylated glucose oxidase (bGOD)-immobilized glass disk was prepared for visualizing D-glucose fluxes in acute brain slices. A mouse hippocampal slice was placed on the bGOD disk and stimulated with a stimulant solution containing horseradish peroxidase (HRP) and a substrate DA-64, followed by capturing digital images of Bindschedler's Green (BG), an oxidized form of DA-64, with a CCD camera. The bGOD membranes responded proportionally to D-glucose, ranging from 2.0 to 5.0 mM. Sucrose, GABA, L-glutamic acid, L-aspartic acid, glycine, acetylcholine and L-ascorbic acid at 10 mM did not cause any responses. The D-glucose fluxes in mouse hippocampal slices stimulated by a hypoxia solution were neuronal region-dependent, i.e., dentate gyrus (DG), cornu ammonis 1 (CA1) and cornu ammonis 3 (CA3), while those stimulated by KCl was independent of the neuronal regions. The response of bGOD disks is discussed in terms of the principle, concentration dependence and selectivity. 相似文献
133.
134.
Wataru Uchida Maiki Yoshikawa Tomohiro Seki Ryotaro Miki Toshinobu Seki Takashi Fujihara Yoshihiro Ishimaru Yuya Egawa 《Journal of inclusion phenomena and macrocyclic chemistry》2017,89(3-4):281-288
A boronic acid-appended γ-cyclodextrin (BA-CyD) was synthesized as a hybrid cross-linker of polyvinyl alcohol (PVA) to form a new type of hydrogel. The CyD moiety of BA-CyD forms an inclusion complex with the PVA chain to produce a mechanically interlocking structure. At the same time, the BA moiety of BA-CyD forms covalent bonds with the 1,3-diol moieties of PVA. On the basis of these two modes of interaction, the hybrid cross-linker connects two PVA chains, thus resulting in the formation of a hydrogel. To investigate the possibility of this hydrogel becoming the basis for an intelligent material for drug delivery, sugar-responsive drug release from the hydrogel was demonstrated. 相似文献
135.
136.
Inami Wataru Fukuta Masahiro Masuda Yuriko Nawa Yasunori Ono Atsushi Lin Sheng Kawata Yoshimasa Terakawa Susumu 《Optical Review》2015,22(2):354-358
Optical Review - A plastic scintillator film for use in an electron beam excitation-assisted (EXA) optical microscope is characterized. The thin film scatters an incident electron beam weakly and... 相似文献
137.
Wataru Takahashi Ngai-Ching Wong Jen-Chih Yao 《Numerical Functional Analysis & Optimization》2013,34(1):85-98
Recently, two retractions (projections), which are different from the metric projection and the sunny nonexpansive retraction in a Banach space, were found. In this article, using nonlinear analytic methods and new retractions, we prove a nonlinear ergodic theorem for positively homogeneous and nonexpansive mappings in a uniformly convex Banach space. The limit points are characterized by using new retractions. 相似文献
138.
139.
Fujita M Hattori W Sano T Baba M Someya H Miyazaki K Kamijo K Takahashi K Kawaura H 《Journal of chromatography. A》2006,1111(2):200-205
We have developed a high-throughput, two-dimensional-mapping (isoelectric point [pI], mass-to-charge ratio [m/z]) method by combining a capillary isoelectric focusing chip sealed with removable resin tape and a matrix-assisted laser desorption/ionization time-of-flight mass spectrometer. Sample proteins are separated in a meandering channel on the chip and immediately frozen. The tape is then removed and the proteins are freeze-dried. The freeze-drying maintains the separation state of the proteins and prevents movement of the sample solution, which can reduce pI resolution. A matrix solution is then applied and mass spectrometry is carried out by laser irradiation. The whole process takes less than 70 min, more than 10 times faster than with two-dimensional, polyacrylamide gel electrophoresis. 相似文献
140.
Liang TT Naitoh Y Horikawa M Ishida T Mizutani W 《Journal of the American Chemical Society》2006,128(42):13720-13726
For obtaining molecular devices using metal-molecule-metal junctions, it is necessary to fabricate a steady conductive bridge-structure; that is stable chemical bonds need to be established from a single conductive molecule to two facing electrodes. In the present paper, we show that the steadiness of a conductive bridge-structure depends on the molecular structure of the bridge molecule for nanogap junctions using three types of modified oligo(phenylene vinylene)s (OPVs): alpha,omega-bis(thioacetate) oligo(phenylene vinylene) (OPV1), alpha,omega-bis(methylthioacetate) oligo(phenylene vinylene) (OPV2), and OPV2 consisting of ethoxy side chains (OPV3). We examined the change in resistance between the molecule-bridged junction and a bare junction in each of the experimental Au-OPV-Au junctions to confirm whether molecules formed steady bridges. Herein, the outcomes of whether molecules formed steady bridges were defined in terms of three types of result; successful, possible and failure. We define the ratio of the number of successful junctions to the total number of experimental junctions as successful rate. A 60% successful rate for OPV3 was higher than for the other two molecules whose successful rates were estimated to be approximately 10%. We propose that conjugated molecules consisting of methylthioacetate termini and short alkoxy side chains are well suited for fabricating a steady conductive bridge-structure between two facing electrodes. 相似文献