Materials Literature
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The effectiveness of different microscopy techniques for measuring the dimensions of ultimate fibers from harakeke (Phormium tenax, New Zealand flax) was investigated using a factorial experimental design. Constant variables were geographical location, location of specimens along the leaf, season (winter), individual…
Diffuse cerebrospinal fluid (CSF) enhancement following gadolinium administration is a rarely recognized phenomenon, and its mechanism is not fully understood. We report two cases of diffuse CSF enhancement following gadolinium administration and review the literature. We conclude that the contributing factors of this…
The tritium extraction from the ITER Helium Cooled Pebble Bed (HCPB) Test Blanket Module purge gas is proposed to be performed in a two steps process: trapping water in a cryogenic Cold Trap, and adsorption of hydrogen isotopes (H2, HT, T2) as well as impurities (N2, O2) in a Cryogenic Molecular Sieve Bed (CMSB) at 77…
It is shown that the combination of scanning electron microscopy and spectral cathodoluminescence (CL) can be a very valuable tool for analyzing the presence of applied or residual stress fields in barium titanate (BaTiO3) single crystal. This may enable a direct experimental confirmation of some important aspects of…
Abstract The idea of using Reverse Flow Reactors (RFR) for methane reduction in exhausts has been well elucidated in the past. However, there are intricacies in such operations to maintain the ignited state of the reactor along with maintaining low outlet concentrations of methane. This is especially true under rich f…
At the National Institute for Fusion Science experimental studies on hydrogen isotope separation by a cryogenic Pressure Swing Adsorption (PSA) process have been carried out in order to apply it to the system of vacuum pumping-gas treatment for the D-D burning experiments of the Large Helical Device. Breakthrough beha…
Electrically conductive and wear resistant Si3N4-based composites were developed in order to facilitate electrical discharge machining (EDM). The microstructural and mechanical properties of Si3N4-based composites with different amounts of TiC0.5N0.5, fabricated by hot pressing at 1650°C for 1 hour, are investigated a…
The structure and adsorption performance of various clays, bentonite, montmorillonite K10 and montmorillonite KSF, were investigated in this study. The raw clays were modified by polymeric Fe/Al species, hexadecyl‐trimethylammonium (HDTMA) surfactant and a complex of Fe/Al‐HDTMA. The X‐ray diffraction spectra (XRD) an…
A thermographic analysis of heat sources accompanying the deformation of PMMA and PC polymers revealed several possible ways of introducing the thermoelastic coupling effects in the modelling. Therefore we used two basic linear viscoelastic models in which an elastic component was replaced by a thermoelastic branch. T…
The effect of both annealing and In content on the properties of ZnO films prepared by electron beam evaporation were investigated. The evaporation was carried out at room temperature from bulk samples prepared by sintering technique. X-ray diffraction showed that the structure of ZnO-In2O3 films depends on both the I…
The three-dimensional structure of the bifunctional tryptophan synthase alpha(2)beta(2) complex from Pyrococcus furiosus was determined by crystallographic analysis. This crystal structure, with the structures of an alpha subunit monomer and a beta(2) subunit dimer that have already been reported, is the first structu…
Abstract An interesting new class of linear polyketoamine polymers containing ether or thioether linkages in the main chain has been synthesized by solution polycondensation of 4,4′‐bis(chloroacetyl)diphenyl ether ( I ), 4,4′‐bis(chloroacetyl)diphenyl sulfide ( II ) and 4,4′‐bis(chloroacetyl)diphenyl sulfone ( III ) w…
The formation of talc-like compounds by the condensation of organotrialkoxy silanes with magnesium hydroxide has been recently reported. These represent layered hybrid nanomaterials that have a layer thickness of around 1 nm, have organic moieties covalently linked to the layer surfaces, and are called "organoclays."…
One conceivable option for the disposal of tritium-contaminated stainless steel consists in its storage at ambient temperature in a purged containment. To assess this option several stainless steel 316 specimens, previously loaded at elevated temperatures with 0.8-8.5 MBq of tritium, were flushed continuously with dry…
We report investigations of ZnO plasma at various ambient pressures of oxygen produced by third harmonic 355nm of neodymium: yttrium aluminum garnet laser for depositing quality nanocrystalline ZnO thin films. Time- and space-resolved optical emission spectroscopy is used to correlate the plasma properties with that o…
SiC-based ceramics are considered as candidate materials for the advanced nuclear energy systems such as the generation IV reactors and the fusion reactors due to their excellent high-temperature strength and irradiation resistance. The advanced nuclear energy systems and their main components adopting ceramic composi…
Flax fibers may be blended with cotton to provide an aesthetic property, improve performance and tailor fabric properties. The quality and cost of the woven fabric blends are affected by the amount of linen in the blend. Microscopic and chemical analyses are currently used to determine linen content in fabrics. This s…
Anisotropic Nd–Fe–B thin films with c-axis texture are fabricated by dc magnetron sputtering on heated Si substrate. The influence of Ti or Mo buffer layer thickness and substrate temperature on the surface morphology, the domain structure and the magnetic properties are investigated and compared for the Nd–Fe–B films…
A tool for tritium inventory evaluation within each sub-system of the Fuel Cycle of ITER is vital, with respect to both the process of licensing ITER and also for operation. It is very likely that measurements of total tritium inventories may not be possible for all sub-systems, however tritium accounting may be achie…
Recovery of tritium released into a working area in a nuclear fusion plant is a key issue of safety. The catalytic oxidation of isotopic hydrogen including tritium is a conventional method for removing tritium from the air of the room. If a tritium release accident occurs in the fusion plant, large volumes of air shou…