Materials Literature
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The specific features of the influence of such factors as the damping of a longitudinal wave in a medium, its transformation into a transverse wave during transmission, and the radiation directivity of array elements on the characteristics of a signal of a normal linear phased-array transducer are considered. Very sim…
Acylpyrazolones (L1–L5) have been synthesized and the conditions of their complexation with neodymium(III) and ytterbium(III) ions in aqueous solutions have been elucidated. The component ratio in the synthesized complexes is Nd(Yb): L = 1: 1. The conditions of excitation and luminescence of the ligands and complexes…
Abstract This work discusses the characterization of an autostereoscopic 3D display by theoretical analyses, optical simulations and experimentation. A camera is utilized to capture 3D information; quantifies the display performance and evaluates the 3D quality of the display. Based on the results thus obtained, the n…
The present paper studies the flux densities distribution in the main parts of the reversed structure of the Lundell machine. The paper studies two different structures of such machines at the same power and dimensions. By classical calculations and 3D finite element method magnetic field analysis, the flux densities…
Results on fabrication and characterization of metal hot side electrical contacts to nanostructured AgPb m SbTe2 + m and Ag(PbSn) m SbTe2 + m materials by using SnTe diffusion bonding are presented.
In this paper, a series of microcrystalline silicon (μc-Si:H) solar cells were fabricated on different back reflectors by very high frequency plasma enhanced chemical vapor deposition (VHF-PECVD). The results indicated that the performance of μc-Si:H solar cells strongly depended on their back reflector structures. Fi…
Performance of a novel simulated-reformate generator was evaluated for testing SOFC cell/stacks performance with ease, no handling of pure carbon monoxide, flexibility for various steam-reforming conditions. Gas composition of synthesized simulated reformate gases with the generator agreed by ± 0.5 mol.% to equilibriu…
In order to improve the osteoblast growth and bacteria resistance, Zn-containing hydroxyapatite (Zn-HA) and titanium oxide (TiO2) composite coatings were prepared to improve binding between coating and Ti substrate. TiO2 film was prepared on the surface of Ti by micro-arc oxidation (MAO) and Zn-HA coating was deposite…
Ultradispersed powders of Cu-Sn alloy were processed by fluorinated polyethers of different compositions. X-ray photoelectron spectroscopy was used to show that a polymeric film no thicker than 2 nm was formed on the surface of particles as a result of processing. The film formed by fluorinated polyethers with a molec…
The conduction mechanism in 2,2',7,7'-tetrakis(N,N-di-4-methoxyphenyl amino)-9,9'-spirobifluoren (spiro-MeOTAD) has been studied by impedance spectroscopy (IS) by using indium tin oxide (ITO)/spiro-MeOTAD/gold (Au) hole only device. The device could be modelled by an equivalent parallel RC network with a low contact r…
Ni-P/TiO2 metal matrix composite (MMC) coatings were prepared by electroless plating process combined with sol-gel technology on Mg-3.0Nd-2.0Zn-0.4Zr (wt.%, NZ30K) magnesium alloys. The reinforcement of TiO2 nanoparticles was added into the solution of electroless plating in the form of transparent alcoholic sol. The…
The edge transport code SOLPS5.0 is used to model edge plasmas in the experimental shots on JT-60U and the profiles of the transverse particle and heat transport coefficients D , χ e and χ i along the outer midplane are obtained by fitting the simulational results to the experimental data in L-mode shot 39090 and H-mo…
Solid solutions of the ZrO 2 -CaO system with 7, 9.6, and 20 mol % of calcium oxide are analyzed by X-ray and neutron diffraction and small-angle neutron scattering. Samples are synthesized by the sol-gel method and annealed at the temperature T = 600°C for 4 h. All samples have a tetragonal structure ( P 4 2 / nmc sp…
The effect of the nature and methods for the production of additives for a cracking catalyst on the sulfur content in liquid cracking products was studied. The influence of the acid-base properties of the additives for a cracking catalyst on the redistribution of sulfur raw material between gaseous and liquid products…
Carbon nanotube (CNT) filled polymer nanocomposites are increasingly regarded as a realistic alternative to conventional smart materials. In this paper, we studied the contact and bulk piezoresistive properties of multi-walled carbon nanotube/styrene butadiene styrene (MWNT/SBS) composite. Measurements of resistance c…
Poly (ethylene terephthalate) (PET), the most important specie of thermoplastic polyester, have been widely used in humans' life. Waste PET is not easy to degradation and become a burden for the environment; therefore, its recycling is very important. High surface area activated carbon is prepared by chemical activati…
A new type of magnetic sensor based on magnetoelectric(ME) composites has been designed and fabricated. The ME composites has a Terfenol-D/PZT/Terfenol-D structure and its ME coefficient is 0.36 V/cm Oe at room temperture. The sensor has AC magnetic measurement ranges from 0.02 Oe to 12 Oe, reaches a sensitivity of 5×…
OBJECTIVE: This article describes the experience of creating and implementing an occupational exposure database for synthetic vitreous fibers (SVFs). The lessons learned and benefits achieved through this experience may be instructive to government and industry when assessing the need, utility, and design of an occupa…
Complexation of copper(II) chloride, copper(II) triflate, and palladium(II) chloride with optically active L,L -3,7-bis[2-(4-hydroxyphenyl)-1-(methoxycarbonyl)ethyl]-1,5-di(ethoxycarbonyl)-3,7-diazabicyclo[3.3.1]nonan-9-one was studied.
The temperature ranges of the martensitic transformations and the shape recovery characteristics of a Ti-45% Ni-10% Nb alloy have been studied. The possibility of using the alloy for producing thermomechanical couplings connecting pipelines up to 25 mm in diameter is supported.