Materials Literature
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We investigate the elasticity of an isolated, threefold junction of soap films (Plateau border), which displays static undulations when liquid rapidly flows into it. By analyzing the shape of the Plateau border (thickness R and transverse displacement) as a function of the liquid flow rate Q, we show experimentally an…
The influence of nanocrystallization conditions on the structure, magnetic properties, and temperature stability of nanocrystalline magnetically soft Fe 73.5 Cu 1 Nb 1.5 Mo 1.5 Si 13.5 B 9 alloy is studied. It is found that preliminary low-temperature annealing exerts an influence on subsequent nanocrystallization of…
The distribution of the copper-containing component in the pore volume of zeolite ZSM-5 has been investigated by H 2 and N 2 adsorption at 77 K and IR spectroscopy. Samples were synthesized by ion exchange and incipient wetness impregnation. Copper-containing clusters are mostly located on the surface of the mesopores…
The formation of defects on a magnetic recording disk is one of the critical issues in the reliability of a hard disk drive. When a magnetic recording head comes into contact with a disk defect, the resulting surface damage can cause significant degradation on read/write performance. Considering the carbon atoms in di…
Earlier we discovered the slow evolution of viscoelastic moduli of heavy crude oil. The shear modulus was measured at frequencies of 0.5, 5, and 50 Hz at different temperatures over 72 h. New studies of the dependence of the complex shear modulus on the strain amplitude revealed a logarithmic increase in the nonlinear…
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During the last decade, there has been growing evidence for the involvement of prokineticins and their receptors (PROK/PROKR) in human reproduction, with multiple roles in the female and male reproductive systems. The PROK/PROKR signalling complex has been reported as a new actor in ovary, uterus, placenta, and testis…
Ternary carbide Ti3SiC2 is a good binder to make superhard composites with diamonds or cubic boron nitride. Superhard composites are normally made at high temperature and under high pressure around 5 GPa to avoid the phase transformation of diamonds or cubic boron nitride. This paper researched the synthesis of Ti3SiC…
Selenium-doped silicon single crystals are studied for the case of an impurity introduced by diffusion from the gas phase. Doping is performed in sealed quartz ampules at a temperature of 1240°C over the course of 240 h. The dependence of the concentration of the introduced deep donor centers of various types on the d…
Positron lifetime and coincidence Doppler broadening measurements on ZrO2+3 mol.%RE2O3 (RE = Eu, Gd, Lu) nanopowders and ceramics obtained by sintering these nanopowders are reported.The initial nanopowders were prepared by a co-precipitation technique and exhibited a mean particle size of ≈ 15 nm.The nanopowders were…
The 2D electron gas (2DEG) formed at the LaXO 3/ SrTiO 3( X = Al , Ti ) oxide interface appears inhomogeneous in several experiments. In particular, we discuss evidences of electron inhomogeneities provided by the phenomenology of the superconducting (SC) phase, which occurs when the carrier density is tuned above a c…
A solid-phase composite material based on multi-walled carbon nanotubes and an ionic liquid (1-butyl-3-methylimidazolium hexafluorophosphate) has been synthesized. It has been found using infrared spectroscopy that vibrational modes of the ionic liquid are shifted by 4–12 cm −1 toward lower energies with respect to th…
In treatment of trans -[Ru(NO)(NH 3 ) 4 (OH)]Cl 2 with concentrated sulfuric acid on heating trans -[Ru(NO)(NH 3 ) 4 (SO 4 )](HSO 4 )·H 2 O ( I ) is obtained with a yield close to quantitative. In the interaction of the saturated solution of I with a saturated NaNO 3 solution a trans -[Ru(NO)(NH 3 ) 4 (SO 4 )]NO 3 ·H…
The classical molecular dynamics method is employed to simulate the interaction of edge dislocations with interstitial Frank loops (2 and 5 nm in diameter) in the Fe-Ni 10 -Cr 20 model alloy at the temperatures T = 300–900 K. The examined Frank loops are typical extended radiation-induced defects in austenitic steels…
The first Dy(III) tetraphenylimidodiphosphinate complex Dy(Tpip)3 was synthesized and characterized by elemental analysis, IR, TG, and X-ray diffraction analysis. The aryl-functionalised imidodiphosphinate ligand (Tpip) provides a bidentate anionic site that leads to a hexa-coordinate dysprosium complex [Dy(Tpip)3]. T…
Summary The analysis of PS‐b‐PI copolymers, synthesized by sequential living anionic polymerization was conducted by on‐line hyphenation of liquid chromatography at critical conditions (LCCC) and proton nuclear magnetic resonance spectroscopy (1H‐NMR). Critical conditions were established for polyisoprene using 1,4‐di…
The solid-phase carbothermic reduction of metals in the crystal lattice of ferrichrompicotite from massive chromium ore is experimentally studied. The reduction is found to develop according to an electrochemical mechanism. The metals precipitate both on the surface and in the volume of an ore grain. The electron tran…
Abstract. Metal-assisted silicon etching in the HF/H2O2/H2O solution with silver ions as a catalyst was investigated. It is found that geometric parameters of layers of nanostructured silicon are determined by the silver-catalyst concentration. A spontaneous stop of the etching process at low Ag+ ion concentration is…
The wide damping maximum which is reported to appear in bones, involving both cortical and cancellous parts, between around 280 K and 420 K; has been determined to be a composition of different processes taking place at different temperatures in cancellous and cortical parts. In fact, in the present work the mechanica…
OSB (oriented strand boards) are wood based products that substitute plywood boards, usually used as structural elements, especially with part of formwork for reinforced concrete members as beams, slabs and columns. In this context, the stiffness properties are highly important. This study aimed to evaluate, with the…