Materials Literature
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Considering palm oil as non-drying oil owing to its<br> low iodine value, an attempt was taken to increase the unsaturation in<br> the fatty acid chains of palm oil for the preparation of alkyds. To<br> increase the unsaturation in the palm oil, sulphuric acid (SA) and<br> para-toluene sulphonic acid (PTSA) was used p…
With the rapid proliferation of cloud computing, the cooling cost of large data centers and the reactive power impact on the grid have become a major concern. This paper presents an improved power architecture for servers with integrated energy storage. Lithium-Ion Ultracapacitors (LIC) are used to provide short-term…
Abstract Mechanical alloying method was applied to prepare nanocrystalline iron-based Fe 1− x Zn x solid solutions with x in the range 0.01 ≤ x ≤ 0.05. The structural properties of the materials were investigated with the Mössbauer spectroscopy by measuring the room temperature spectra of 57 Fe for as-obtained and ann…
Abstract Highly dispersed olive-like NiS particles were synthesized in a liquid-liquid biphasic system at room temperature, where nickel xanthate in organic solvents (toluene and benzene) and sodium sulfide in water solution were used as nickel and sulfide sources, respectively. NiS particles were formed at the stabil…
Abstract In the present study, composites were prepared by Hand lay-up molding. The composites constituents were epoxy resin as a matrix, 6% volume fractions of glass fibers (G.F) as reinforcement and 3%, 6% volume fractions of preparation natural material (Rice Husk Ash, Carrot Powder, and Sawdust) as filler. Studied…
Abstract Transparent, light blue crystals of Cu[C(CN) 3 ] 2 ·2 NH 3 were obtained by dissolving Cu[C(CN) 3 ] 2 in aqueous ammonia and subsequent evaporation of the solvent under ambient conditions. Cu[C(CN) 3 ] 2 ·2 NH 3 crystallizes in the space group C 2/ c (no. 15, Z = 4) with the cell parameters a = 1291.9(3), b =…
The development of active and stable catalysts<br> without noble metals for low temperature oxidation of exhaust gases<br> remains a significant challenge. The purpose of this study is to<br> determine the influence of the preparation method on the catalytic<br> activity of the supported copper-manganese mixed oxides…
Single crystals of rare-earth ferroborates Sm1 − x La x Fe3(BO3)4 (x = 0, 0.5, 0.75) have been grown by the flux method. Their magnetic properties have been investigated in the temperature range from 2 to 300 K in magnetic fields up to 9 T. It has been found that the substitution of nonmagnetic ions La3+ for magnetic…
Simulation of thermodynamic and geometry parameters of Mn(II), Ni(II), and Zn(II) complexes with macrocyclic ligands has been performed using non-hybrid DFT method OPBE/TZVP implemented in GAUSSIAN’09 software. Such complexes with NNSS coordination of the donor centers and trans orientation of nitrogen and sulfur atom…
Here, the authors report the field emission investigations of silicon nanotubes (SiNTs) synthesized by vapor phase condensation method in DC arc plasma reactor. The SiNTs have diameters in the range of 10–15 nm and length of a few 100 nm. A maximum current density of 4.2 mA/cm2 has been attained. The turn on field, de…
It has been shown that a difference between the binding energies of electrons in different electrodes induces an electric field in the bulk of a ferroelectric film, which can be interpreted as a kind of internal bias field. The values of the internal bias field in films of different thicknesses have been found and com…
The superaustenitic stainless steel presents several technological applications, mainly in corrosive environments. The different phase precipitation might alter some of its mechanical properties. Such alterations affect several factors, including the working life of the material under adverse working conditions. In th…
Innovative collimators are being investigated to handle the high energy particle beams foreseen in future upgrades of CERN Large Hadron Collider (LHC). This calls for the development of novel advanced materials, as no existing metal- or carbon-based material possesses the combination of physical, thermal, electrical a…
Micro-/nanocrystalline diamond films deposited in Ar/H 2 /CH 4 microwave plasmas have been studied, with argon flow rates in the range of 70-100 sccm. The effects of argon addition on morphology, surface roughness, quality and structure were investigated by scanning electron microscopy, surface profiler, Raman spectro…
In this paper, ZnO/MgO core-shell nanowires are synthesized based on a one-step chemical vapor deposition (CVD) method. The scanning electron microscopy (SEM) images of core-shell nanowires indicate that Mg addition has little influence on the morphology of the synthesizing products. High crystalline quality ZnO/MgO c…
Market push for higher energy efficiency, lower total automation cost and safer automation solution has driven the lightweight design of industrial robot manipulators. Advanced structural materials like optimally designed carbon fiber reinforced plastics (CFRP) and aluminium tubes are therefore gaining increased use i…
A methanol sensor based on polymer functionalized Quartz Tuning Fork (QTF) has been demonstrated. Thin polymer wires, formed of different polymers and with different additives, were used to form bridges between the two tines of the QTFs. The mechanical properties of the polymer wires, as well as the effective mass of…
Si-Zr hybrid sol-gel coatings on 2A12 aluminum substrate were prepared, and the effect of cerium acetate (Ce(CH3COO)3) doping on corrosion behavior of the sol-gel coatings was examined. The scanning electron microscopy (SEM) was employed to investigate the morphology of the coatings, and the corrosion resistance of th…
The biological effect of iron nanoparticles with a size of 20–40nm obtained by the plasmochemical method are studied. An antibacterial effect on antibiotic resistant strains of Pseudomonas aeruginosa and Staphylococcus aureus is found at concentrations of iron nanoparticles in a range of 0.1–10 mg/mL. The toxic effect…
The kinetics of polystyrene (PS) accumulation in polyvinylidene fluoride (PVDF) films as a result of the thermal polymerization of styrene sorbed from a styrene-toluene-divinylbenzene solution at 90°C was studied. After accumulation of ∼65 wt % PS in the sample, the thermal polymerization rate increased by approximate…