Materials Literature
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一槽式微生物燃料電池（MFC）を用いて乳酸が主要な有機物成分として含有されることを特徴とする食品製造系排水の処理特性を実験的に検討した．また，開回路系と酢酸模擬排水供給系を対照として，基本的な処理ならびに発電特性について比較を行った．その結果，実排水に対する有機物分解速度はMFCでは1.4 kgCOD/m3/dayに達し，開回路系の0.9 kgCOD/m3/dayに比べ約1.6倍に向上した．MFC内では乳酸の分解産物と考えられるプロピオン酸等の有機酸の分解速度が大きく上昇しており，このことが有機物分解速度向上に寄与した．また，MFC内では開回路系に比べGeobacter属の細菌群が高い割合で検出され，実排水処理においても発電のみな…
Bioactive nanocrystalline Fe doped hydroxyapatite (Fe: HAP) were successfully prepared through auto-combustion route. The synthesized samples were characterized by various physico-chemical methods. Thermal stability investigated using thermo-gravimetric and differential thermal analysis (TG-DTA). Structural characteri…
This paper reviews our recent progress of application studies on planer-surface-type and Pierce-gun-type nanocrystalline silicon (nc-Si) ballistic electron emitter arrays, which were designed and prototyped to be able to integrate with a separately fabricated active-matrix large scale integrated driving circuit for th…
This paper presents neutronics analysis mainly focused on key design issues for self-sufficient tritium production based on the conceptual design study carried out for a fusion DEMO reactor in the past several years, which includes new findings regarding the design methodology of breeding blanket. Self-sufficient prod…
Extraordinary optical transmission through Penrose metal hole arrays (PMHA) in the terahertz region is investigated numerically by using coupled-mode analysis. Spectral change of the transmittance is studied at resonant frequencies by increasing the number of holes and comparing the spectra of PMHA and a periodic meta…
To date, a number of useful techniques for nanolithography and nanostructure fabrication based on atomic force microscope (AFM) have been studied and developed; they include mechanical modification, local anodic oxidation (LAO), and metal-assisted chemical etching of germanium (Ge) surfaces in water by using platinum…
Focused ion beam (FIB) is well known as a powerful tool for directly forming micro/nano-scale 3D mechanical structures without photolithography. By using FIB with Ga+ ions, we are able to conduct local etching as well as Ga+ ion implantation. The combination of the ion doping and alkali wet etching to a single crystal…
Graphite cross section differs among various evaluated nuclear data libraries as a result of distinct theoretical models and experimental technologies which are utilized by different nuclear data organizations all over the world. It has been revealed that graphite cross section plays a significant role in criticality…
Migration property of fibroblast cultured
This paper presents an experimental evaluation of the performances of the quasi-current-error method realized in the dq rotating reference frame. The method provides a similar level of performances to that using actual current errors.
The behavior of the graphite dust is important to the safety of High Temperature Gas-cooled Reactors. The present study focuses on the forces which make the graphite dust attach or detach from the surface in HTGR. The effect of graphite dust size, the fluid velocity and the surface energy between the particles and the…
In order to understand the transformation characteristics of Ti Ni shape memory alloys, it is crucial to know its fundamental atomic structure. While many sources have provided detailed explanations about the basic theory of martensitic transformations, it is hard for engineers who do not have expertise in metallurgy…
Functionalities of organic semiconductors are governed not only by individual molecular properties but also by their weak intermolecular interactions in various conformations. The individual molecular property has been widely investigated in detail; on the other hand, the weak intermolecular interaction is difficult t…
Ammonia is a hydrogen storage material that may solve several problems related to hydrogen transportation and storage in the hydrogen economy. An innovative energy storage and carrier system has proposed from our recent research. In this system, ammonia is generated from nitrogen oxides in combustion flue gas; NO_x is…
Cavitation bubbles generated by an underwater shock wave formed microjets during the collapse and rebound process and they were visualized by a high-speed camera. The directions of the microjets showed the same direction of the initial shock wave propagation. These results imply that the direction of the microjets wer…
In this paper, a novel experimental method was proposed for evaluating the energy absorption capability of composite materials under impact loading. Split Hopkinson pressure bars system was employed to perform the crushing tests at high strain rate. Progressive crushing behavior was successfully achieved by using a co…
The effect of texture and grain boundary on indentation behavior was investigated using single crystal and fine-grained magnesium with an average grain size of 2-3 μm. Hardness of prismatic plane had 10-20% higher than that of basal plane. The fine-grained magnesium also showed slightly harder as compared with those o…
In the last few years, with the escalating world demand for energy, natural gas had been suggested as an alternative for replacing heavy fossil fuels as it produces cleaner combustion, less harmful and economical. Moreover, continuous world’s depending on fossil fuels such as crude oils, coals and heavy fuels has beco…
Nowadays, there are various researches that using waste materials as materials substitute. This is to produce a green and sustainable environment and at the same time to solve the main problem which is to reduce the waste materials. Pavement engineering is one of the fields that can contribute to solve this problem wh…
This paper will review the area of interest in fuel cell, especially in solid oxide fuel cell (SOFC). This area of interest covers SOFC operational reaction, its advantages and limitations, type of cell structure and configuration, and the requirement of SOFC. The review also looks into the development and fabrication…