Materials Literature
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On the basis of copolymers of 4-methoxyphenyl-4-(6-(acryloyloxyhexyloxy)benzoate with 4-(6-acryloyloxyhexyloxy)benzoic acid, nonequilibrium composites containing nanoparticles (quantum dots) of cadmium selenide at concentrations many times higher than their solubility limit in the liquid-crystalline phase are synthesi…
The pitting potential of ASTM A-890-1B stainless steel at different sodium chloride activities and constant temperature was studied. As sodium chloride activity increases, the pitting potential decreases, favoring localized corrosion. In addition, the effect of different 5-amino-1,3,4-thiadiazole - 2- thiol concentrat…
In order to solve the problem of non-uniform electric field distribution in converter transformer barrier system caused by conductivity difference between the transformer oil and pressboard, the SiC(silicon carbide) modified pressboard was developed by nano doping method. The conductivity of modified pressboard was me…
Vibration band structures of thin phononic crystal plates (PCPs) with square array and graphite array of nitinol inserts are calculated by the plane wave expansion (PWE) method. The influences of filling fraction are considered when investigating the effects of the varying temperature on the band gaps. Vibration band…
Roscosmos test facilities for total ionizing dose testing of electronic components intended for space application are addressed. Examples of the application of these test facilities for different test methods are examined.
Adsorption on single-layer graphene at finite adatom concentrations is considered within the surface-molecule model. The main channels of adatom interaction (dipole-dipole repulsion and exchange) are taken into account. It is shown that the consideration of interaction leads to adatom depolarization.
The basic mechanical properties and penetration performance of a new type of fiber concrete reinforced by UHMWPE fiber were experimental investigated. The strengths of the cube compression, splitting tensile and beam bending of this FRC with four kinds of fiber volume fraction (FVF) was researched firstly. Then, the p…
For medical applications, 4,4′‐dicyclohexyl methane diisocyanate (HMDI)‐based poly(carbonate urethane)s were synthesized from HMDI and 1,4‐butanediol as hard segments and poly(carbonate diol) (number‐average molecular weight = 2000 g/mol) as soft segments. The effects of wide‐range γ irradiation on the samples were ex…
Here, we present a C 60 oscillator encapsulated in a graphene nanoribbon (GNR) trench. The mechanisms of the C 60 /GNR-trench oscillators are the same as those of the multi-walled carbonnanotube (CNT) oscillators. While the array synthesis of these CNT oscillators is very difficult, the same GNR trench array can be im…
This work exploits the possibility of use graphene for the design of reconfigurable antenna arrays at microwave frequencies. In particular, advanced design methodologies also based on evolutionary techniques and aimed at integrate graphene in the feeding networks of antenna arrays are presented. Numerical results conc…
In order to characterize the local structure of Pb1-xCaxTiO3(PCT) samples, Ti K-edge XANES measurements were performed and showed that Ca incorporation to PbTiO3structure leads to a decreasing of local distortion of Ti atoms in relation to oxygen atoms at the TiO6octahedra. Moreover, according to EXAFS measurements, t…
A new quantitative approach on the basis of joint probability distribution (JPD) analysis of BSE- and CL-images is proposed for studies of the zoning of polygenic (polychronous) grains of zircon. It was shown for the example of zircon of the Mugodzhar metamorphic rocks (South Ural) that a series of zones might be dist…
Mechanical properties and electromagnetic interference (EMI) shielding effectiveness (SE) of extruded ZK60 alloy after pre-cold rolling and artificial aging treatment were investigated. Tensile testing was employed to evaluate the mechanical properties, and the EMI shielding property was measured by the coaxial cable…
In this paper, the effect of alumina thickness on Al 2 O 3 /InP interface with post deposition annealing (PDA) in the oxygen ambient is studied. Atomic layer deposited (ALD) Al 2 O 3 films with four different thickness values (5 nm, 7 nm, 9 nm, 11 nm) are deposited on InP substrates. The capacitance—voltage ( C–V ) me…
Complete rupture of the anterior cruciate ligament (ACL) is a common problem in orthopedics. At present, there are many techniques to reconstruct ligaments, which include the use of autografts, allografts, and, in some cases, artificial ligaments. The latter have not provided good results in the short, medium, and lon…
Vitiligo is a dermatosis requiring complex treatment. In clinically stable cases, melanocyte autologous grafting has shown good results, using different methodologies for obtaining the donor area: dermatomes, punches, blisters. However, these techniques are complex and require specific instruments. This study presents…
The vapor-liquid equilibrium for a benzene-heptane- N -methylpyrrolidone mixture is experimentally studied. The mathematical modeling of phase equilibrium is performed using the NRTL equation. The existence of a binary pseudoazeotrope in the system under study is experimentally found.
Fluorophosphate glasses are among the most promising media for ytterbium erbium lasers. The following advantages of this glasses are low OH-content, simple glass synthesis process and the possibility for a relatively high dope concentration of rare-earth ions (up to 15 wt %). The paper deals with complex investigation…
Jinhua Li, Yuqin Qiao, Hongqin Zhu, Fanhao Meng, Xuanyong Liu State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, People’s Republic of China Abstract: Nanotopographical TiO2 films (including nanorod, nanotip, and nanowir…
Nowadays, population growth and the interest of food industry, makes the research and applications of biodegradable polymers increase, because under favorable conditions its degradations may occur within weeks or in a few months, reducing the environmental impact. This work presents the processing and characterization…