Materials Literature
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Nanocomposites of regenerated cellulose containing different amounts of graphene nanoplatelets (GNPs) (0.5, 1, and 2 wt%) have been prepared by wet spinning using Lyocell process. The thermal stability, mechanical, and electrical properties of the nanocomposite fibers were studied. The nanocomposite fibers were charac…
BACKGROUND: Nano-scaled cerium oxide (nCeO2) is used in a variety of applications, including use as a fuel additive, catalyst, and polishing agent, yet potential adverse health effects associated with nCeO2 exposure remain incompletely understood. Given the increasing utility and demand for engineered nanomaterials (E…
This paper focuses at wetting on Al-based quasicrystals and complex metallic alloys (CMAs), which comprise a significant number of crystalline compounds of changing lattice complexity, according to composition. Such compounds are thermodynamically stable and may be prepared into various sample shapes that allow easy m…
Subject of Research. The goal of the present research is investigation of photoelectric and photomagnetic response of ITO (indium-tin oxide) films under UV laser irradiation. Method. The ITO films were prepared by magnetron sputtering with the thickness equal to 300nm. The films were irradiated by UV laser light with…
The desired properties of rubber goods significantly depend on three key factors: 1) rubber formulations; 2) processing methods; and 3) design of products. High modulus rubber vulcanizates can hardly be achieved with a balance of the overall properties, because the rubbers or elastomers are soft and flexible material.…
A simple and inexpensive method to synthesize ZnO nanograin powders from Zn powders is reported in this paper and phase change from Zn powders to ZnO nanograins during the process is studied in detail. Zinc powders were immersed into 1.0 mol/l oxalic acid aqueous solution for various times and then dried at ambient co…
A facile chemical route was developed to fabricate cobalt oxide nanoflower (NF) on nickel foam substrate. The morphology, microstructure and crystalline form of the cobalt oxide NF were investigated by scanning electron microscopy, X-ray photoelectron and X-ray diffraction. The capacitive performance of the prepared c…
This paper presents the biosynthesis of gold nanoparticles from the bacteria , Serratia marcescens. The intra-and extra-cellular synthesis of gold nanoparticles is shown to occur over a range of pH and incubation times in cell-free exracts and biomass of serratia marcescens that were reacted with 2.5mM Tetrachloroauri…
We present experimental results on preparation and characterization of colloidal CdSe quantum dots (QDs) and polymer nanocomposite based on them. CdSe QDs were characterized by UV absorbance and visible photoluminescence (PL) spectroscopy as well as 2D DOSY NMR. The average CdSe particles size estimated from the UV-Vi…
The corrosion behavior of API 5L X-70 pipe steel was studied in a jet impingement chamber, which simulated the effect of flow rate and contact angle on pipe accessories. Experiments were carried out in sour brine with kerosene and corrosion rates were determined by linear polarization resistance. Corrosion products we…
In this paper, we report on the gas sensing properties of Ni0:6Zn0:4Fe2O4 nanoparticles. The samples were synthesized by the microwave method. The synthesized nanoparticles were characterized by X-Ray diffraction, which confirmed the formation of a cubic spinel structure without any detectable impurity phases. The res…
A new chalcone derivative 1-phenyl-3-(4-bis(2-chloroethyl)aminophenyl)-2-propen-1-one with the molecular formula C 19 H 19 Cl 2 NO is synthesized by the Claisen–Schmidt condensation reaction. A transparent yellow single crystal was obtained by the slow evaporation solution growth technique using ethanol at room temper…
The Au/MCM-41 nano catalysts were synthesized from four different methods, viz., homogeneous deposition-precipitation, micro-emulsion, impregnation and polyol and their catalytic activities were tested for the vapor phase oxidation of benzyl alcohol to benzaldehyde. The physico-chemical properties of the catalysts wer…
The system LiOH—H 2 O is characterized by immiscibility phenomena both in equilibrium with vapor and solid saturated solutions or without the solid phase. The solubility of LiOH increases as a result of immiscibility phenomena at ~355°C and further increases above this temperature up to the melting point. The immiscib…
"Los sistemas acuáticos epicontinentales constituyen un componente importante en el ciclo global del carbono. Con el fin de generar una línea base respecto a si los lagos tropicales funcionan como fuente o sumidero de dióxido de carbono (CO2) se evaluó la producción primaria bruta, neta y la respiración en la zona euf…
Fillers play important roles in enhancing mechanical properties of NR latex films. The effect of filler dispersion and amount of dispersing agent to the tensile strength and tearing energy of NR latex films were investigated in this study. The studies were carried out by (i) varying the amount of dispersing agent (Anc…
Surface Plasmon Resonance (SPR) is a highly sensitive technique for investigating the dielectric and optical properties of dielectrics at metal-dielectric interface. In the present article, the dielectric properties of various wide band gap (WBG) semiconductor have been studied using SPR technique at different wavelen…
The electron momentum distribution of detonation nanodiamonds (DND) was investigated by recording electron energy-loss spectra at large momentum transfer in the transmission electron microscope (TEM), which is known as electron Compton scattering from solid (ECOSS). Compton profile of diamond film obtained by ECOSS wa…
Samples of the solid component of welding aerosols (SCWAs) were obtained as a result of steel welding by ANO-4, TsL‑11, and UONI13/55 electrodes of Ukrainian manufacture. The phase compositions of the samples, both freshly prepared (FP) and modified (M) by water treatment at 60 °C, were studied by X-ray phase analysis…
This Monte Carlo study deals with mass and charge transport in binary ionic alloys governed by interstitialcy defects acting as diffusion vehicles. In particular, we calculate tracer correlation factors f(A) and f(B) in a simple cubic random alloy AB for diffusion via the collinear interstitialcy mechanism as a functi…