Materials Literature
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Ginzburg-Landau (GL) equations for the coexistent state of superconductivity and antiferromagnetism are derived microscopically from the t-J model with extended transfer integrals. GL equations and the GL free energy, which are obtained based on the slave-boson mean-field approximation, reflect the electronic structur…
This thesis explored the use of sodium alginate-pectin-poly(ethylene oxide) electrospun fibers as a carrier to stabilize folic acid - an essential micronutrient that is susceptible to degradation when exposed to light and acidic conditions. In the first phase of this research, electrospinning behaviour of aqueous algi…
With growing calls for changes in the field of risk assessment, improved systematic approaches for addressing environmental issues with greater transparency and stakeholder engagement are needed to ensure sustainable trade-offs. Here we describe the comprehensive environmental assessment (CEA) approach as a holistic w…
Homogeneous charge compression ignition (HCCI) is an autoignition combustion process with a lean or dilute fuel/air mixture. It can provide both good fuel economy and very low emissions of nitrogen oxides (NOx) and particulates. Therefore, it is considered to be one of the most promising internal combustion engine con…
Composite Vessels are now used to store a variety of fluids or gases including cryogenic fluids under pressure. Sudden failure of these vessels under certain conditions can lead to a potentially catastrophic vapor expansion if thermal control is not maintained prior to failure. This can lead to a "Boiling Liquid Expan…
Abstract Crystal washing experiments were carried out using a uranyl nitrate solution in order to confirm the effect of uranyl nitrate hexahydrate (UNH) crystalline particle size on the removal of liquid impurities. The UNH crystal was immersed in a Ce solution and was washed for removing the mother liquor on the surf…
During heteroepitaxial growth, a transition from planar to three-dimensional morphology occurs spontaneously, leading to the formation, self-assembly, and coarsening of nanoscale islands. This dynamic process is carried out via surface diffusion driven primarily by strain relaxation and chemical intermixing/segregatio…
In this paper, the physical behaviors of the interaction between a spark-generated bubble and a rubber beam are studied. Both numerical and experimental approaches are employed to investigate the bubble collapse near the rubber beam (which acts as a flexible boundary) and the corresponding large deformation of the bea…
Organic single-crystal electric double transistors (EDLTs) are formed on molecularly flat ion-gel films. On page 4392, T. Takenobu and co-workers report the first realization of ambipolar electric-double-layer transistors (EDLTs) using organic single-crystal and ion-gel electrolytes thorough the fabrication of molecul…
Composites were prepared by impregnating non-woven mats of mixed natural fibres, mainly flax, hemp and a small percentage of polylactic acid, with an epoxidized soybean oil/maleic anhydride matrix resulting in a composite made up of 85% natural material. These composites comprised 65% matrix resin and 35% natural fibr…
The authors report that GaN-based LEDs with contact-transferred and mask-embedded lithography (CMEL) and in-situ N treatments were fabricated. From the experiment results, it can be seen clearly that the characteristic of ITO contacts on the etched p-GaN with the N treatment-20 sccm shows a near ohmic behavior. With 2…
On page 4408, J.-B. Yoon, D.-S. Lee, and co-workers report the first use of a columnar thin film as a nanosieve. The image illustrates a columnar-structured nanosieve (nanoporous membrane) prepared by physical vapor deposition (PVD). Since a thin film formed by PVD has vertically-grown columnar grains, the film natura…
This article presents the results of research that was aimed to synthesizing and characterizing samples of LaMn1-xCox O3 (0 ≤ x ≤ 0,5). Samples were prepared by Sol-Gel method and characterized through X-ray diffractions (XRD), susceptibility, and magnetic measures. XRD measures analysis revealed a variation of lattic…
Single-walled carbon nanotube paper was surface oxidized with gaseous oxygen atoms produced by low-pressure: (1) vacuum UV (λ = 104.8 and 106.7 nm) photo-oxidation and (2) downstream microwave plasma discharge of an Ar–O2 mixture. X-ray photoelectron spectroscopy was used to detect the carbon- and oxygen-containing fu…
Results of investigations on development of new consumables for welding and weld surfacing of grey cast iron are presented. It is shown that through the influence on physical and chemical properties of liquid cast iron in the welding pool, the graphitization process, structure and properties of welds and weld overlays…
This work was aimed at developing new coatings on biodegradable substrates for possible use in food packaging. In order to study barrier properties of these coatings made from fatty acid dispersions, oxygen permeability, water vapor permeability and also contact angle measurements were carried out. The coatings made f…
Heat transfer in double-layer systems with superfluid helium as one of the layers is studied in this paper. Double-layer systems like heater-helium and helium-detector were considered. The limiting cases of the relation of the non-helium layer length and the length of the heat wave in it were investigated. The unusual…
The ZnS:Cu nanopowders were synthesized by the wet chemical method with Cu concentrations of 0.1, 0.15, 0.2, 0.3 and 0.4{\%}. The microstructure of samples was investigated by the X-ray diffraction (XRD) measurement. The results show that the prepared samples belong to the Wurtzite structure with the average particle…
An improved method using nanosized LaPO4 as solid-phase extractor for avoiding the interference from nitrate ions on oxalic acid in RP-HPLC was developed. Nanosized LaPO4 possessed lower solubility and higher adsorption ability for oxalic acid than previous adsorbent. Oxalic acid could be adsorbed selectively by nanos…
We consider the parity problem in one-dimensional, binary, circular cellular automata: if the initial configuration contains an odd number of 1s, the lattice should converge to all 1s; otherwise, it should converge to all 0s. It is easy to see that the problem is ill-defined for even-sized lattices (which, by definiti…