Materials Literature
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The latest progresses of the series of research on the trapper of nitrosamines are reported in this paper, involving the attempts to elevate the selective adsorption of zeolites through enhancing adsorbent‐adsorbate interaction, in order to prepare the new functional nanoporous materials with high efficiency to elimin…
The kinetics of the martensitic transformation in a CuAlMn shape memory alloy (SMA) has been studied using the acoustic emission (AE) technique. It is demonstrated that the volume fraction of martensite as a function of time and temperature can be derived from the measured AE power. The fraction data obtained can be d…
Three kinds of fluorescent powders were separated by means of organic liquid-liquid extraction for the recycling purpose. The effect of surfactant concentration on the separation of the fluorescent powders was observed. In this study, the effect was analyzed by observing aggregate structure of the green and blue fluor…
The nucleation and electrodeposition of copper from a pyrophosphate electrolyte onto anodized thin-film aluminum was used to provide well-adhering electroforms in high aspect-ratio resist molds made by X-ray lithography. Cyclic voltammetry and chronoamperometry methods were employed to characterize the impact of proce…
During the preparatory dismantling activities of Caorso’s Nuclear Power Plant (NPP), an experimental campaign using plasma and oxyacetylene metal cutting processes has been performed and applied to plates and tubes exposed to the coolant steam of the reactor. The plant (Boiling Water Reactor, 870 MWe) was designed and…
Polyfunctional oligomeric antioxidants with a sterically hindered phenolic fragment were prepared. The influence of these antioxidants on oxidation and degradation of SKI-3 rubber was analyzed.
This paper describes development of high performance CFRP/metal active laminates mainly by investigating the kind and thickness of the metal. Various types of the laminates were made by hot-pressing of an aluminum, aluminum alloys, a stainless steel and a titanium for the metal layer as a high CTE material, a unidirec…
Stress corrosion cracking (SCC) can occur on the exterior surface of high pressure hydrocarbon transmission pipelines fabricated from low carbon steels. Both the initiation of SCC and the ability of SCC to progressively increase in depth is a complex and poorly understood phenomena. Previous empirical evidence suggest…
The role of polyoxyethylene lauryl ether (POELE), a nonionic surfactant, in removing bovine serum albumin (BSA) and catechin from polyethylene terephthalate (PET) particles was quantitatively studied. Relatively large fractions of adsorbed BSA and catechin were removed from PET particles under weak alkaline conditions…
Rapid solidification of a non-dilute binary alloy is studied using a phase-field model with a general formulation for different diffusion coefficients of the two alloy components. For high solidification velocities, we observe the effect of solute trapping in our simulations leading to the incorporation of solute into…
This study is concerned with the numerical simulation of a drop moving on a surface due to a wettability gradient. The wettability gradient is introduced by varying the static contact angle along the surface. The unsteady laminar Navier-Stokes equation is solved in each phase using a fixed Eulerian unstructured grid.…
ナイロン6 (PA)/スチレン-アクリロニトリル共重合体 (SAN), PA/ポリスチレン (PS), PA/ポリプロピレン (PP), SAN/PP, PS/PPおよびPP/エチレンプロピレンラバー (EPR) 系ブレンドをブラベンダー型二軸混練機で溶融混練により調製した. これらのブレンドに関して, 分散相粒子サイズに及ぼす成分ポリマー間の界面張力, ブレンド組成, ブレンドのレオロジー的性質および混練条件の影響を調べた. その結果, 数平均分散相粒子サイズrnは, 次式 [rn∝γ12φ2/3dσ-1/2] で表されることが明らかになった. ただし, γ12, φdおよびσは, それぞれ成分ポリマー間の界面張力, 分散相成分…
Sophisticated modern instruments and methods can contribute to the preservation of national and cultural heritage. Modern analytical methods such as chromatography, spectrometry and densitometry are extremely useful, particularly for the analysis of rare works of art from which only very small samples are available. T…
In order to avoid restrictive fissile loading limits in some types of US Department of Energy (DOE) spent nuclear fuel, nuclear criticality control measures are needed in standardized waste packages for long-term disposal of high-level radioactive materials in the proposed Yucca Mountain repository. This need has been…
The nature of free radicals produced in gamma-irradiated poly(ethylene terephthalate) (PET) has been studied by the electron spin resonance (ESR) and Fourier transform infrared (FTIR) techniques. ESR and FTIR spectra of irradiated PET are recorded at different temperatures and radiation doses, to observe the behaviour…
We have investigated atomic arrangements and electronic properties of two-dimensional Si compounds having the Si(111) skeletons with H and/or OH-radicals terminators, using first-principles calculations within the density functional theory. A mechanism of the onset of a direct gap for the planar siloxene has been clar…
In conventional gas turbine systems combustion results in high exergy losses (∼30%) of fuel exergy input. Replacing the combustor with a high temperature fuel cell, like the Solid Oxide Fuel Cell (SOFC), will significantly reduce these exergy losses. As the SOFC electrochemically converts the natural gas, exergy losse…
The effect of oxygen and carbon oxide on the SnO 2 surface conductivity is considered in the framework of the early model of gas adsorption on semiconductor oxides. A change in the work function of the adsorption system is calculated.
Hydriding combustion synthesis (HCS), which utilizes self-propagating exothermic reaction between metallic powders at pressurized hydrogen, was originally developed for metal hydride production. It offers many advantages to save processing time, to reduce productive cost, and to synthesize high purity product. In this…
Poly(phenylene sulfide) (PPS) films were modified by Ar, O2, N2 and NH3 plasmas in order to improve their adhesion to copper metal. All four plasmas modified the PPS film surfaces, but the NH3 plasma modification was the most effective in improving adhesion. The NH3 plasma modification brought about large changes in t…