Thick wall mesoporous silica molecular sieves with wormhole pore structure (MPS-TW) were prepared post-synthetically using cetyltrimethyammonium bromide (CTMABr) surfactant micelle solution and tetratethyl orthosilicate (TEOS) incorporated inside the channels of large-pore mesoporus silica (LP-MPS), followed by hydrolysis/condensation of TEOS. XRD spectra, N₂ adsorption isotherms and TEM images of the resultant materials exhibited that average wall thickness of the materials increased in the range of 1.2-2.2 nm, depending on the preparation conditions in the present study. It was found that molar ratio of CTMABr to TEOS as well as volume ratio of the micelle solution to the total pore volume of LP-MPS were key parameters affecting the wall thickness of MPS-TW samples.

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Novel magnetic circuit, which is combined with AC and DC magnetic fields, has been developed for the actuator by means of magnetostriction alloys. This magnetic circuit is also useful for high field creation for the nano laboratory or micro laboratory. The material of the yoke of the circuit was 99.99% pure Iron (Fe) and two coils were used for AC magnetic flux density. In order to adjust the DC fields, few ferrite magnets were used. Using this circuit, the magnetic flux density up to 1 T was generated in an aperture of 6.0 mm width and 2.0×2.0 mm square.
Terfenol-D, which shows large magnetostriction, was established into the aperture of the magnetic circuit and AC magnetic flux density were applied by flowing the current of the electricity into the coils. We designed two type actuators. One is the actuator under the atmospheric pressure. The magnetostriction of Terfenol-D in this actuator is 680 ppm, which corresponds 4.0 μm displacement for 20 V_pp output from an audio amp as use of power supply. The minimum displacement is 2 nm in 1 mV, which indicates that this magnetic actuator can be useful for nano meter activations for nano science and technology. The other is the actuator, which is applied uniaxial stress to the Terdfenol-D. This is 20×20×20 mm size and the activation length is 11 μm.
The electric power generation system was also designed by means of the magnetic flux density change due to the magnetostriction. With exerting an impulsive force of 80 N, 24 mW electricity was generated. This generator is considered to be useful for the generator for the sensors or auxiliary lights of motorcars and trains.

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The application of most empirical correlations for hydraulic gradient of settling slurry are generally limited to the experimental region in which four different flow patterns can be observed: stationary bed flow, saltation flow, heterogeneous flow, and pseudo-homogeneous flow. Therefore, the reliable design model independent on not only the flow regimes but also pipe diameter is imperative for pipeline engineers.
By using the condition factor introduced by Sato et al., which represents the situation of solids movement in a pipe and calculated from the concentration profiles, an equation was derived for hydraulic gradient of settling slurry flow in horizontal circular pipes. With the slurry database, it was also assured that the equation was valid for practical pipeline design under the condition of settling slurry flow. Hence, the effect of pipe diameter and concentration on the Specific Energy Consumption and pipeline design procedure were discussed based on the analytical results.

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Remote sensing has been used to understand water distribution and pollution situation in recent years. This paper proposed an algorithm for analyzing water quality conditions using the data acquired by active sensor Synthetic Aperture Radar (SAR) of Japanese Earth Resources Satellite-1 (JERS-1). The proposed method has four steps. First, the gradations of the SAR data were conformed. Second, textures were calculated from the co-occurrence matrix of the SAR data. Third, the fuzzy regression analysis of the texture features and measurements for local water quality was done. The relation between water quality data and textures was calculated by using MIN problem and MAX problem. Finally, the estimation maps of water quality were obtained by using fuzzy level-slice processing. By comparing the estimation maps of water quality and realities in the study area, it was clear that the proposed method was possible to understand the water quality conditions effectively from the SAR data with single brightness information.

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We attempted to convert blast furnace slag into an adsorbent for phosphate removal using the alkali fusion method. The slag was mixed with NaOH powder (NaOH/Slag=1.6), and the mixture was heated at 600°C for 6 h to prepare the precursor, which was then stirred at room temperature in various aqueous solutions: distilled water, 1 M NaOH, 1 M NaCl, 1 M NaNO₃, 1 M Na₂CO₃ and 1 M Na₂SO₄, to synthesize the adsorbent. Regardless of the reaction solution, products were synthesized, including hydrocalumite and calcite. Phosphate ions in solution were removed as calcium phosphate minerals using all obtained adsorbents. The PO₄^3- adsorption abilities of all products obtained and the solution pHs after removal were similar. The adsorbents could adsorb PO₄^3- selectively in the presence of F^-, Cl^-, Br^-, NO₃^- and SO₄^2-. We have prepared a new inorganic adsorbent with high affinity for phosphate from wastewater.

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For the development of a novel anode catalyst for use in a DMFC, Pt oxide blacks were partially reduced by electrochemical treatment, and the electrocatalytic activities of the methanol oxidation were investigated by the rotating disk electrode method. Specific surface area measurement of the active sites by CO stripping voltammetry, analysis of the chemical shift by XPS and determination of the O/Pt atomic ratio by EPMA were also carried out on the reduced Pt oxide blacks. Compared to the Pt oxide black without reduction, the methanol oxidation activity of the partially reduced Pt oxide black was significantly improved by applying the cathodic charge of -0.6 C or more. The Pt oxide black reduced by -1.2 C had particularly good properties, namely, the anode catalyst showed both the highest current density and the minimum activation energy of the methanol oxidation. The methanol oxidation activity of the Pt oxide black, which was effectually enhanced by the electrochemical reduction, exceeded that of the anode catalyst now in use or PtRu black. Furthermore, the XPS and EPMA analyses suggested that the residual oxygen in the partially reduced Pt oxide black played an important role in the methanol oxidation.

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