Materials Literature
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Treatment of acute myocardial infarction in the future should focus not only on improving acute treatment, as it has been done over the past decades, but also on secondary prevention of left ventricular dysfunction and/or progression to heart failure by preserving left ventricular shape, avoiding left ventricular remo…
ZnGa2O4 nanospheres with high uniformity are synthesized by a facile hydrothermal method with the assistance of organic additive trisodium citrate (Cit3-). On page 6581 M. Shang, J. Lin, and team show how, under UV light and low-voltage electron beam excitation, ZnGa2O4, ZnGa2O4: Mn2+, and ZnGa2O4: Eu3+ nanospheres em…
The investigation of the ab initio band structure and the resulting spatial electron density distribution of the InSe system in the framework of the density functional theory and the elementary energy bands concept is presented. It gives us reliable information about the valence band structure and peculiarities of the…
Scattering mechanical performances of brittle La- and Mg-based BMGs are found in the present study. Upon dynamic loading, there exist largely scattered fracture strengths even if the strain rates are under the same order, and the BMG systems are the same. The negative strain rate dependence for La- and Mg-based BMGs i…
The finite coupled bosonic model of reservoir introduced by Vasile et al. [Phys. Rev. A 89 (2014) 022109] to characterize non-Markovianity, is used to study the different dissipative behaviors of a harmonic oscillator coupled to it when it is in resonance, close to resonance or far detuned. We show that information an…
We developed water-soluble supramolecular complexes of aluminium phthalocyanine based on mesoporous silica nanoparticles and polyvinylpirrolidone containing rare photoactive nanoaggregates. Radiative lifetimes, extinction coefficients and energy of electronic transitions of isolated and associated metal phthalocyanine…
The results of studying the kinetic and spectral characteristics of the heterogeneous chemiluminescence excited by the products of sulfur-dioxide dissociation (SO + O) are presented. It is shown that heterogeneous SO + O chemiluminescence emerges not only upon the adsorption, oxidation, and desorption of reagents, but…
The aim of this study was to investigate the valuable impact damage parameters from quasi-static indentation testing to access the low-velocity impact behaviour of ex-situ toughened composites by comparing low-velocity impact and quasi-static test results (the same boundary conditions). In terms of the delamination da…
A physicomathematical model of shock wave initiation of an explosion of oxygen-containing bubbles in liquid hydrocarbon fuels is developed. The model is used to calculate an explosion of bubbles in which the initial concentration of fuel vapors is outside the flammability limits. A principal possibility of condensatio…
The effects of 1, 3 and 5 wt.% Cu additions on structure, Vickers hardness, indentation creep and corrosion behaviour of Al-5Ti-1B ternary alloy were studied and analyzed. The Al-5Ti-1B alloy exhibited a mixture of Al3Ti and TiB2 intermetallic compounds (IMCs), and Al solid solution. Additions of 1 and 3 wt.% Cu showe…
This paper investigates the possibility of improving the mechanical and thermal properties of epoxy and unsaturated polyester toughened epoxy resins through the dispersion of octadecyl ammonium ion-exchanged montmorillonite (organoclay) through exfoliated mechanism. The nanocomposites prepared are characterized for th…
Various magnetizing systems of EMA transducers, which make it possible to improve the efficiency of the excitation and reception of ultrasonic waves in metals by the EMA method and can be used in automated EMA scanners-flaw detectors, were considered. A method for the generation of strong fields from modern permanent…
Patterning pit on Si(001) substrate prior to Ge deposition is an important approach to achieve GeSi nanoislands with high ordering and size uniformity. In present work, the electronic structures of realistic uncapped pyramid, dome, barn and cupola nanoislands grown in {105} pits are systematically investigated by solv…
The ease of embrittlement characterizes the resistance of a metal to transition from the plastic to the brittle state. The physical significance of the mechanical stability is analyzed in conditions of stress concentration. A method is developed for predicting the ease of embrittlement K msc of structural steel under…
The structural, cohesive, and electronic properties of a fullerene-like Znn-xCdxOn (n = 36) clusters have been investigated within the framework of the electron density hybride functional method (B3LYP) with a set of 3-21G(d) split valence basis functions. These clusters are used as a model in an investigation of the…
This study aimed to evaluate the influence of mesoporous silica coating surface treatments on push-out bond strength of zirconia posts. Zirconia posts (Cosmopost) were treated with vehicle (control), sandblasting plus silane application (SB+SI), a combination of sandblasting, mesoporous silica coating and silane appli…
In this paper we study the behavior of microbiologically induced corrosion by means of specie Thiobacillus ferrooxidans on AISI 4140 Alloy Steel with chromium and molybdenum high hardenability and good fatigue resistance, abrasion and impact influenced by Thiobacillus ferrooxidans. To determine the effect of process v…
Magnesium alloy is considered an environmentally friendly material that contains none of mercury, lead and chromate. This study aims to evaluate the performance of the new magnesium (Mg-Zn-In-Sn) alloy by adding elements Zn-In-Sn in AZ91 which are established by orthogonal design and manufactured by two roll continue…
The theory of inverse magneto-mechanical effect in cubic crystals has been developed. The proposed model involves changes of the magnetostrictive material magnetization in the external polarizing magnetic field when creating a compression-tension or shear deformation. The magnetic field direction is shown to significa…
This paper presents a dynamic model of dc pollution flashover using analytical relationship of arc parameter (A and N). The model takes account the physical and electrical characteristics of the discharge and the pollution layer. Using the impedance criterion for the discharge propagation and the energy balance criter…