Materials Literature
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This paper presents the performance analysis of 12Slot-14Pole hybrid excitation flux switching machine (HEFSM) with outer-rotor configuration. Nowadays, research on flux switching machines (FSMs) become an attractive research topic due to several excessive advantages of robust rotor structure, high torque and power ca…
When the bone tissues suffer from an impaired area that is greater than their self-healing size limit, the impairment may not heal or heal incompletely. With the purpose of developing artificial bone scaffolds for the recovery of bone tissues, this study twists 3-ply polyvinyl alcohol (PVA) fibers into plied yarns, wh…
Method for desulfurization of tall oil pitch is suggested. The method is based on successive treatments with hydrogen peroxide, sulfuric acid, and aqueous solutions of acetonitrile. As a result, the total content of sulfur was reduced from 3800 to 220 ppm. The fuel characteristics of the desulfurized pitch were determ…
Carbon nanotube field-effect transistor (CNTFET) is envisioned as a promising device to overcome the limitations of traditional CMOS based MOSFETs due to its favourable physical properties. This paper presents a novel six-transistor (6T) static random access memory (SRAM) bitcell design using CNTFETs. Extensive valida…
Hydroxyapatite was synthesized from bovine cortical bone by thermal decomposition method. The chemically cleaned bone was heated to 160 °C for 48 hour to remove moisture and any organic contents followed by decomposition in muffle furnace at 850 °C for 6 hours. The so-obtained white powder was characterized by Fourier…
2,6-Di- tert -butyl-4-(2-hydroxyethyl)phenol undergoes oxidative self-coupling by the action of K 3 Fe(CN) 6 in alkaline medium at room temperature to give 7,9-di- tert -butyl-4-(3,5-di- tert -butyl-4-hydroxyphenyl)-1-hydroxymethyl-2-oxaspiro[4.5]deca-6,9-dien-8-one. The composition of the reaction products has been d…
IR magnetoreflection spectra, diagonal σ xx and off-diagonal σ xy components of the effective optical conductivity tensor, and magnetic properties of Fe(t x , Å)/Cr(10 Å) superlattices have been studied. The abrupt decrease in the amplitude of dissipative function −ωImσ xy (ω) (ω is the cyclic frequency of light wave)…
Physicochemical relationships of the 137 Cs recovery from alkaline solutions using resorcinol-formaldehyde resins were studied. The instability of resorcinol-formaldehyde resins in alkaline solutions is due to oxidative degradation of the polymer. Oxidation of resorcinol-formaldehyde cation exchanger in alkaline solut…
The Josephson currents through real vector potential (RVP) and pseudo vector potential (PVP) barriers in graphene are investigated. In graphene, the pseudo vector potential may be caused by a local strain. The comparison of supercurrents induced by the two type-barriers is focused. As a result, we find that not only w…
We report the surface plasmon resonance (SPR) measurements during plasma treatment of thin films by an indigenously designed setup. From the measurements on Al (6.3 nm)/Ag (38 nm) bi-layer at a pressure of 0.02 mbar, the SPR position was found to be shifted by ~20° after a plasma treatment of ~7 h. The formation of ox…
In this paper, a current-fed asymmetric full-bridge LLCC resonant converter is proposed for the dielectric barrier discharge (DBD) applied to the surface treatment. Compared with a previous design, the asymmetric structure with no front-end buck circuit and only two reverse-voltage blocking diodes is adopted to reduce…
We report on the structural and technological investigations of the vapor-crystal phase transition during synthesis of paracetamol films of the monoclinic system by vacuum evaporation and condensation in the temperature range 220–320 K. The complex nature of the transformation accompanied by the formation of a gel-lik…
The present work deals with copolymers synthesized by reacting aniline units or blocks with 2,6-di(thiophen-2-yl)aniline and 2,2'-(thiophen-2,5-diyl)dianiline monomers. Characterization by spectroscopic techniques such as FT-IR, UV-vis, 1H-NMR corroborated the formation of true copolymers. Synthesized products showed…
We have synthesized La-doped BaSnO 3 thin films on SrTiO 3 substrates by using the pulsed electron deposition technique. By performing reflection/transmission measurements on the films and a Drude model analysis of the data, we determined the carrier density n = 6.7 × 10 19 cm −3 and the room-temperature mobility µ =…
In the present article, the laser hardening of the carbon steel C45, previously coated by the physical vapour deposition (PVD) process, is studied. The (Al,Ti)N-G and nACo® (nc-AlxTi1-xN/α-Si3N4) coatings were applied. Nd:YAG laser with the laser beam power density of 1945 W/cm2 and scan speed of 300 mm/min was used f…
The crystal structure of a new monoclinic variety of hydrous rubidium vanadyl phosphate [Rb0.24(H2O)0.76]VO(H2O)(PO4) doped with Al3+ ions is studied by X-ray (R = 0.054) diffraction: a = 6.2655(4) Å, b = 6.2712(3) Å, c = 6.8569(5) Å, β = 107.805(7)°, space group P21/m, Z = 2, and D x = 2.792 g/cm3. The new phase obta…
Technetium tetracarbonyl complexes [TcBr(CO) 4 ] 2 and [TcXan(CO) 4 ] (Xan is methylxanthate), being fairly stable in an inert solvent, undergo rapid decarbonylation in a donor solvent (acetonitrile). The kinetic characteristics of the reaction were determined. The experimental data and results of quantum-chemical cal…
In this research, the B/A/S composite yarns were fabricated using the stainless steel wires as core yarn, antibacterial nylon and bamboo charcoal polyester filaments as inner wrapped yarn and outer wrapped yarn, respectively. The composite yarns with a wrapping number of 8, 11, 14 turns/cm were fabricated on a hollow…
Abstract The paper presents the method of preparing a composite slurry composed of AlSi11 alloy matrix and 10 vol.% of SiC particles, as well as the method of its high-pressure die casting and the measurement results concerning the tensile strength, the yield point, the elongation and hardness of the obtained composit…
The pore formation in CYTOP polymer under high pressure of argon or nitrogen gases was investigated by positron annihilation spectroscopy. In the range 070 MPa, formation of large open pores was observed. After reduction of pressure to normal one, the free volumes inside the polymer structure remained enlarged. The st…