Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
To safely transport radioactive materials it is required that the packaging system must be able to guarantee their containment and confinement (via its integrity assurance) avoiding any additional dose exposure (respect of ALARA principle). The engineering system has thus to be designed to ensure safety features by co…
This paper reports self-healing of a crack on a stretching metal wire using electric field trapping of metal nanoparticles. The electric field trapping is a phenomenon where the nanoparticles are trapped in a crack on the wire selectively by the electric field, when a voltage is applied to the wire covered with the na…
It is well known that ceramic materials generally exhibit brittle nature at low temperatures. This is because the translation vector of crystal structure is large and accordingly the Peierls stress of possible dislocations is large. It is noted that perovskite crystals such as strontium titanate often exhibit ductile…
In the new generation of nuclear reactors design, a series of passive safety systems are adopted to provide significant improvements in plant simplification, safety and reliability. However, when applying the RELAP5 code in predicting the passive residual heat removal system (PRHRS), the capability of RELAP5 code need…
Ocean current power generation is expected to be renewable and stable energy source. Floating type ocean current power generation system is under development by joint research consortium comprised of TOSHIBA, IHI, the University of Tokyo and Mitsui Global Strategic Studies Institute. This system will be mainly operate…
The most of engineering codes, used in nuclear reactor calculations, are based on diffusion approximation of the neutron transport equation. The finite-difference method is widely used to solve the diffusion equation. Acceptable accuracy of the results reached only by using fine mesh or complementary approaches, such…
Recently, most of infants wear diapers in their daily life. Due to wearing a diaper, contact stimuli on skin causes dermatitis. The contact stimulus is measured by sensory evaluation. However, it is difficult to carry out sensory evaluation on infants. Therefore, a sensory system which can objectively evaluate the con…
Nanowires have been expected to be utilized in various applications. Recently, many researchers have reported about single crystal or polycrystalline nanowires where the single crystal nanowires are shown to have a higher conductivity compared to the polycrystalline ones. In our previous study, we investigated the fab…
La_<0.6>Sr_<0.4>Co_<0.8>Fe_<0.2>O_<3-δ>(LSCF) is expected to be applied as an oxygen separation membrane and cathode for solid oxide fuel cell (SOFCs) because of its oxygen ion conductivity. In particular, the oxygen ion conductivity of LSCF is an important characteristic that determines the performance of the device.…
Hitachi-GE Nuclear Energy Ltd. (Hitachi-GE) has developed a conceptual design for the Double MS: modular simplified & medium small reactor (DMS) under the sponsorship of The Japan Atomic Power Company. The DMS is one of the small-to-medium sized reactors (SMRs) of boiling water reactor (BWR) type, which has been predi…
Power consumption of large paddle impellers was measured for shear thinning fluids. The large paddle impellers are MAXBLEND, FULLZONE, Super Mix MR203 and Super Mix MR205. The test fluids were 3.5wt%, 4.0wt%, 4.5wt% carboxymethylcellulose(CMC) solutions. The shear stress of CMC solutions was correlated with the power…
Metal hydride heat pump (MHHP) shows low cooling performance due to the low effective thermal conductivity of metal hydrides (MH) particle bed. In this paper, aiming at improving the heat transfer of MH particle bed as well as enhancing the operating characteristic of the MHHP system, the metal hydride sheet (MH sheet…
In the field of severe accident, the description of corium progression events is mainly carried out by using integral calculation codes. However, these tools are usually based on bounding assumptions because of high complexity of phenomena. The limitations associated with bounding situations ([Seiler et al., 2014] e.g…
可視光に対して吸収も散乱ももたないナノ粒子蛍光体は，インビジブル（目に見えない）であることを活かしてさまざまな応用が期待されている。光散乱強度と比表面積の観点から，インビジブル蛍光体には粒子サイズが10 ～50 nm程度でよく制御され，適切なマトリクス中でよく分散するナノ粒子が求められる。このようなナノ粒子を合成するためには，ソルボサーマル法・ポリオール法などの焼成を経ない低温液相プロセスが有効である。本解説では，セラミックスナノ粒子の液相合成において粒子サイズを決める因子を概観し，ナノ粒子蛍光体のサイズ制御合成の実例を紹介する。
KERENA is an innovative boiling water reactor concept with passive safety systems (Generation III+) of AREVA. The reactor is an evolutionary design of operating BWRs (Generation II). In order to verify the functionality and performance of the KERENA safety concept required for the transient and accident management, th…
In order to evaluate transient behavior of Japan sodium-cooled fast reactor (JSFR) with fuel sub-assemblies with the innerduct structure (FAIDUS) precisely, a new model for a plant dynamics code HIPRAC was developed. In this new model, inner core and outer core channels can be divided into three channels, respectively…
Cr1−x-Mgx-N-O powders, with Mg content in metallic elements (x=Mg/Cr+Mg) ranging from 0 to 0.5, were synthesized from CrN and MgO powders using mechanical alloying under nitrogen atmosphere. Densification of these original powders is carried out by the spark plasma sintering is performed under a 70 MPa pressure and at…
In the present study, long term durability of the candidate material for the next radio astronomy satellite under space environment were investigated. The materials were high modulus PAN based carbon fiber reinforced polycyanate ester and epoxy. In order to simulate the space environment, thermal cycle tests between -…
A prototype 3D simulation system for reactor decommissioning based on the software of DELMIA, and VIRTOOLS is built. This system is composed of the database, real simulating scene, decommissioning process simulating, decommissioning data analyzing, project management, evaluation and expert assistant decision-making an…
Измерены электродные потенциалы урана в расплаве эвтектической смеси хлоридов лития, калия и цезия в интервале 573-1073 K. Рассчитаны условные стандартные потенциалы E U*(III)/U и основные термодинамические характеристики трихлорида урана в расплаве LiCl-KCl-CsCl, измерены электронные спектры поглощения ионов UCl 3- 6