Materials Literature
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We describe instrumentation for a high-frequency electron paramagnetic resonance (EPR) and pulsed electron-electron double resonance (PELDOR) spectroscopy. The instrumentation is operated in the frequency range of 107-120 GHz and 215-240 GHz and in the magnetic field range of 0-12.1 T. The spectrometer consisting of a…
The use of nitrogen-doped carbon (NC) layers has proved effective for enhancing the cycling stability of nanostructured silicon (Si) anodes of lithium ion batteries. It has also motivated further exploration of cost- and performance-effective synthetic routes. In this regard, we propose glucosamine-derived encapsulati…
The Hansen solubility parameters (HSPs) of as-produced multi-walled carbon nanotubes (APMWCNTs) were determined by means of the inverse gas chromatography (IGC) technique. Due to non-homogeneous surfaces of the APMWCNTs arising from defects and impurities, it was necessary to establish adequate working conditions for…
Features of the chemical nature, physical state, hardening mechanism, application technology, properties, and main practical fields of application of sealing and tightening materials based on polysulfide and siloxane rubbers are considered. Brands of domestically produced polysulfide and silicon-organic sealants that…
This investigation was carried out to study the effect of a novel process of surface modification, surface nanostructuring by ultrasonic shot peening, on osteoblast proliferation and corrosion behavior of commercially pure titanium (c p-Ti) in simulated body fluid. A mechanically polished disc of c p-Ti was subjected…
We have implemented a generic coarse-grained model for the aromatic ionic liquid [C n MIM + ][Tf 2 N – ]. Various lengths for the alkyl chain on the cation define a homologous series, whose electric properties are expected to vary in a systematic way. Within the framework of a classical density functional theory, the…
Fe–Ni base superalloy GH4706 has been used for large size disc forgings of heavy duty gas turbines. In this paper, based on the change law of precipitation, influential effects of stabilisation time on precipitation behaviour and mechanical properties of GH4706 alloy were investigated. Results show that with prolongat…
This study assessed the effect of immobilized lipase on weak base styrene resin using polyethyleneimine (PEI) with cross-linking. Two procedures were used in this study. The first one, “mono-layer” lipase immobilization, involves washing PEI after adsorption. The second procedure, “multi-layer” lipase immobilization,…
A major problem of the building sector is the limited durability of reinforced concrete structures under highly aggressive environments due to the corrosion of the reinforcements. In order to evaluate the feasibility of low alloy steel as corrosion resistant reinforcement in concrete, the corrosion behaviour of tradit…
The raman spectra of ZnGa 2 Se 4 single crystals are studied at 300 K in various experimental configurations. The observed phonon frequencies are identified by their types of symmetry. The optical phonon frequencies are related to particular atomic displacements in the unit cell.
In this paper, we introduce a 2-D non-isolated pixel modulation code to mitigate the problem of 2-D inter-symbol interference, the major obstacle of holographic data storage systems. The proposed modulation code does not allow a pixel to be isolated from its adjacent bits. We compare the bit error rate (BER) performan…
Diffusion bonding of powder metallurgy superalloy FGH96 to single crystal superalloy DD6 by hot iso-static pressing (HIP) was studied. The microstructure and elements diffusion at FGH96-DD6 interface were discussed. The influence of HIP process on the microstructure and mechanical properties of FGH96 and DD6 was inves…
Rheological and relaxational properties of distillate and technical beryllium were studied. It was shown that strengthening and thermal softening processes in nanocrystalline beryllium significantly differ from the same processes in distillate and technical beryllium. Thermal softening in distillate and technical bery…
The basic properties of concrete can dramatically improve due to the unique structure of the nanosized particles. Namely, strength, frost resistance, fire resistance, corrosion resistance are increased, density and permeability are reduced; plasticity and water absorption are regulated. Despite of the huge number of a…
In the paper, we present principles of an object-oriented programming language for Physarum polycephalum computing. Physarum polycephalum is a one-cell organism that can be used for developing a biological architecture of different abstract devices. Both, theoretical foundations and assumptions for a language specific…
Abstract In this study, hydrogels of poly(2-hydroxyethyl methacrylate) with different cross-link density were prepared by the free-radical polymerization method. l -Cystine, which acts as a cross-linker, was prepared at different concentrations, ranging from 0.02 to 0.08 mol/l, to identify the concentration that provi…
The properties of nanostructured nitinol (Ni, 55.91 wt %; Ti, 44.03 wt %) in the initial state and after mechanical and the thermal treatment and a composite of nitinol with a tantalum surface layer obtained by magnetron sputtering have been studied. Compared with microstructured nitinol, the use of nanostructured nit…
CO2-microemulsions show strong pressure dependent properties. Using time-resolved SANS to investigate the kinetics of structural changes upon periodic pressure jumps of adjustable amplitude, we found that the compression-induced formation of cylinders occurs on a timescale of one second, whereas the expansion-induced…
The study on the effect of cane wood and palm kernel as filler materials on the compressive strength and density of an automobile brake pad has been done. The Central Composite Design tool of the Design Expert 8 software was used to design percentage composition of the test samples for 20 experimental runs. To ascerta…
The synthesis of stable nanoparticle colloids by laser ablation of the copper target in water and fragmentation of Cu + CuO nanopowder with pulsed fiber laser irradiation with a wavelength of 1064 nm and pulse duration of 100 ns has been investigated experimentally. The influence of the technological parameters on the…