Materials Literature
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Multilayer dielectric capacitors were fabricated from nanocomposite precursor comprised of BaTiO 3@ TiO 2 core–shell nanosized particles and poly(vinylidene fluoride–hexafluoropropylene) (P(VDF–HFP)) polymer matrix (20 vol%). The multilayer capacitors showed very high discharge speed and high discharged energy density…
Myocardial infarction (MI) and the subsequent heart failure remain among of the leading causes of morbidity and mortality in world wide. A number of studies have demonstrated that intramyocardial biomaterials injections improve cardiac function after implantation because of their angiogenic potential. Thermoresponsive…
In this work, niobium carbide coatings were deposited on AISIM2, H13, and D2 tool steels by thermoreactive deposition/diffusion. The carbides were obtained using salt baths composed of molten borax, aluminum, and ferroniobium at a temperature of 1020 °C for 4 hours. The coatings were observed via scanning electron mic…
A sandwich structure of Ni/V/4H-SiC was prepared and annealed at different temperatures from 650 °C to 1050 °C. The electrical properties and microstructures were characterized by transmission line method, X-ray diffraction, Raman spectroscopy and transmission electron microscopy. A low specific contact resistance of…
Pressure generation at cryogenic temperatures presents a problem for a wide array of experimental techniques, particularly neutron studies due to the volume of sample required. We present a novel, compact pressure cell with a large sample volume in which load is generated by a bellow. Using a supply of helium gas up t…
The influence of the winding scheme [concentrated, single-tooth, distributed (pitched, unpitched)] on the iron-loss distribution in a rotor and stator is to a large extent unknown. At present, windings are primarily selected with respect to back-EMF harmonics and torque fluctuation. In such approaches, the influence o…
In the majority of contributions, the electrical–pulse-induced resistance (EPIR) switching effect of perovskite manganites is thought to originate from the extrinsic interfacial Schottky barrier between the metal electrode and the surface of sample. In this work, La0.5Ca0.5MnO3 (LCMO) ceramic samples were synthesized…
AP-based nanolimit growth energetic materials (NLGEM) were prepared by using SiO2 gel as nanolimit growth skeleton materials and using sol-gel method combining solution crystallization to make AP recrystallized in the nanopores of SiO2 gel skeleton to form AP/SiO2 NLGEM. The chemical and physical structure and propert…
We show how it is possible to develop a system to improve management of distribution grid assets using AMI. In particular, we demonstrate how distribution transformers can be monitored and therefore, managed, even when there are no direct communication channels between the transformers and the asset management system.…
In this in vitro study, the developing of novel hydrogels to be used as artificial knee meniscus proceeded for 5 years. These hydrogels were synthesized from polyvinyl alcohol (PVA)/polyvinyl pyrrolidone (PVP)/poly acrylic acid (PAAc) via using irradiation of γ‐rays. Further, the effects of composition, concentration…
There is a growing interest in the use of calcium phosphate, used to fabricate porous scaffolds for bone tissue regeneration and repair. However, it is difficult to obtain interconnected pores with very high porosity and to engineer the topography of the pore walls for calcium phosphate ceramic scaffolds. In this stud…
Abstract Oxidative dearomatization is a powerful strategy in organic synthesis. However, reports on using dioxygen as the oxidant, as it is environmentally friendly, readily available (air), and easy to handle, are rather limited. Helicene diols can undergo transannular dearomatization triggered by dioxygen to give di…
Pd5InSe has been prepared from the elements. The use of iodine as a mineralizing agent enables the synthesis of single-phase powder samples as well as of single crystals. Pd5InSe is stable in cold air, but reacts to give Pd, In2O3 and Pd4Se at 400 °C. The crystal structure of Pd5InSe was determined from single-crystal…
This research introduced two new absorption working pairs which have better energy storage performance than LiBr + H 2 O and lower cost than other working pairs in literature. The two working pairs are both quaternary systems: LiBr + LiNO 3 + LiCl + H 2 O and LiBr + LiCl + 1,3-propanediol + H 2 O. Vapor pressures of t…
This paper deals with determining the parameters of a resistance spot welding (RSW) transformer dynamic model. To obtain an efficient, accurate, and reliable dynamic model of an electromagnetic device, accurate determination of its model's parameters is crucial. In regard to an RSW transformer, determining of the dyna…
The infrared reflection and transmission spectra of Bi 2 Te 2 Se single crystals grown by the modified Bridgeman method have been studied in the spectral range of 30–10000 cm −1 at temperatures of 5–300 K. The bandgap and its temperature dependence, optical function spectra, and concentration of free charge carriers i…
A series of new tin(IV) complexes based on 2-hydroxy-3,6-di-tert-butyl-para-benzoquinone (LH) of the general formula L2SnR2 (R = Me (I), Et (II), Bu n (III), Ph (IV)) and LSnMe3 (V) were synthesized. The obtained compounds were characterized by IR and 1H, 13C and 119Sn NMR spectroscopy and elemental analysis. The X-ra…
In this study, TiN films were deposited on SiO2substrates by Atomic Layer Deposition (ALD) using TiCl4and NH3as precursors. Properties and morphology of the TiN films were characterized by different methods. Using Grazing Incidence X-Ray Diffraction (GIXRD), TiN films demonstrated polycrystalline structure with (111)…
Temperature monitoring using fiber optic sensors to get a distributed temperature profile along an underground cable circuit is increasingly being used by utilities. However, effectively applying this technology presents some challenges. This paper summarizes those challenges associated both with instrumentation and i…
The effect the chemical composition of a support, the content of nickel, and the method of its binding has on the physicochemical and catalytic properties of the NiO/B 2 O 3 -Al 2 O 3 system is studied. The boron oxide content in the support is varied from 2 to 30 wt %, while the nickel concentration is 0.59–3.18 wt %…