Materials Literature
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This paper generalizes the main results obtained at the Institute for Theoretical and Applied Electromagnetics of the Scientific Association for High Temperatures of the Russian Academy of Sciences in the design and study of materials with new properties that have no analogs in nature, i.e., the so-called metamaterial…
The brittleness, plasticity, super-plasticity and the removal mechanisms of critical fragmentation of the nano ZrO2 ceramics were investigated. The formula of critical ductile grinding depth of the common engineering ceramics was inapplicable to the nano-ZrO2 ceramics. A new formula of critical ductile grinding depth…
Abstract The starch/natural rubber composite was prepared by blending the modified starch by esterification with natural rubber latex. The modified starch particles are homogenously distributed throughout the natural rubber (NR) matrix. In comparison with the host NR, the thermal stability of composite is significantl…
Abstract Three novel rare earth substituted polyoxometalates containing 5‐fluorouracil, K 10 C 4 H 4 FN 2 O 2 Pr(PW 11 O 39 ) 2 ·24H 2 O, K 10 C 4 H 4 FN 2 O 2 Nd(PW 11 O 39 ) 2 ·12H 2 O and K 10 C 4 H 4 FN 2 O 2 Sm(PW 11 O 39 ) 2 ·12.5H 2 O were synthesized and structurally characterized by elemental analysis, IR spe…
Turmeric fibre has been extracted from the stem and petiole of Tekurpeta and Cuddapha turmeric (Curcuma longa) and then used for the preparation of turmeric fibre reinforced polyester composites. For enhancing the bonding between fibre and matrix, one set of turmeric fibres is chemically treated with NaOH, KMnO4 and H…
Cobalt ferrite (CoFe 2 O 4 ) has been synthesized by a solid-state mechanothermal process, and its molar heat capacity has been determined. A stoichiometric mixture of CoC 2 O 4 ・ 2H 2 O and FeC 2 O 4 ・ 2H 2 O was subjected to a combination of mechanical activation (by high-energy milling) and thermal activation (by a…
Abstract Munakataite, Pb 2 Cu2(Se 4+ O 3 )(SO 4 )(OH) 4 , has been found in association with a variety of rare secondary Te minerals at Otto Mountain, San Bernardino County, California, USA. It is very rare and occurs as subparallel bundles of blue needles up to 1 mm long. Electron microprobe analyses provided the emp…
Interior gelation of liposomes leads to changes in the physicochemical properties of liposomes, such as increased rigidity of the lipid bilayers, modified shape, improved physical stability and sustained release of a model drug cytarabine (ara-C), all of which may affect the performance of liposomes in vivo. In this s…
A method for the conversion of the thermodynamic characteristics of iron-based melts into those of titanium-based melts is used to calculate the change in the Gibbs free energy when oxygen dissolves in liquid titanium and when titanium is deoxidized by deoxidizing elements. It is established that beryllium is the most…
Dependences of the dielectric permittivity of a graphene-filled polymer composite and the ESR signal intensity in γ-irradiated samples of this composite on the concentration of graphene additive have been studied. Anomalous behavior of the permittivity correlates with the ESR signal intensity variation, which is indic…
Pulse width-modulated (PWM) inverters are used more and more to operate electrical machines and to interface renewable energy systems with the utility grid. However, there are abundant high-frequency harmonics in the output voltage of a PWM inverter, which increase the iron losses and result in derating of the machine…
The conjugated tetraenes 3 and 4 a-c have been prepared and shown to possess an orthogonal structure. This was not only demonstrated by their spectroscopic properties and X-ray structural analysis of solid representatives (e.g., 4 a-c) but also by the resolution of these chiral compounds by GC and HPLC chromatography…
This study is concerned with an analysis of the structural and mechanical design concepts in naturally occurring superhydrophobic structures. It is shown that the non-wetting behaviour of the leaves of two members of the aspen family can be primarily attributed to a dual-scale surface structure consisting of micro-pap…
We study numerically the influence of density and strain rate on the diffusion and mobility of a single tagged particle in a sheared colloidal suspension. We determine independently the time-dependent velocity autocorrelation functions and, through a novel method, the response functions with respect to a small force.…
Gold nanoparticles have unique optical properties such as surface-plasmon and photothermal effects. Such properties have resulted in gold nanoparticles having several clinical applications. Gold nanorods (which are rod-shaped gold nanoparticles) show a surface plasmon band in the near-infrared region. They have theref…
Transparent conducting oxide films composed of ZnO and SnO 2 were prepared on glass substrates by co-sputtering method. After surveying the electrical properties of the films according to the cationic composition and process conditions, we investigated the influences of hydrogen doping on the films' characteristic pro…
Abstract The coarsening behaviour of Goss grains in grain oriented electrical steel during annealing after cold rolling was investigated. The results show that the coarsening resistance of fine second phase particles was reduced inside the surface grains. This induced particle coarsening and the reduction of particle…
A kinetics model describing macroscopic behavior of martensitic variants rearrangement in ferromagnetic shape memory alloys is proposed. The model is based on a tensor description of thermodynamic continuum mechanics taking into account magnetomechanical coupling on the rearrangement process. A generalized thermodynam…
Effect of microalloying with boron on the properties of steel is studied using a new complex silicon-, manganese-, and boron-containing FSMB ferroalloy. The mechanical properties and structure of steel alloyed with this ferroalloy are comparable to or even higher than those of steel alloyed with ferroboron.
Abstract Studies of the paragenesis of authigenic illite in arkosic sandstones of various regions and ages have revealed that the illitization of kaolinite is an important reaction accounting for the formation of authigenic illite in sandstones during burial diagenesis. The illitization of kaolinite takes place at an…