Materials Literature
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In this study, the effect of interlayer d-spacing on the contact angle (θ c ) of montmorillonite nanoclays was investigated. Three type of montmorillonites, pure hydrophilic, modified with 35-45 wt.% dimethyl dialkyl (C14-C18) amine (Nanomer I.44P) and modified with (1-hexadecyl) tri-methylammonium bromide (HDTMAB), w…
Abstract Alkali activation with sodium carbonates is a traditional method to improve bentonite properties for a variety of applications. In some applications, natural sodium-rich bentonites are preferred, and custom regulations require proper declaration of Na-rich bentonites, with respect to activation. Consequently,…
Nano CuO-ZrO2 mixed oxides were prepared by wet chemical method by mixing equimolar solutions (0.45M) of cupric chloride (1.92g) and Zirconium oxychloride (3.63g) in aqueous Sodium hydroxide and refluxed at elevated temperature. The prepared nano CuOZrO2 mixed oxides were characterized by FT-IR, SEM, EDAX, XRD, DSC an…
Abstract This study was undertaken to examine the effect of cerium dioxide nanoparticles on the expression levels of genes, encoded transcription and growth factors, which are important for control of cell proliferation and survival in human astrocytes. Exposure of astrocytes with cerium dioxide nanoparticles (0.17 an…
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Corrosion protection arising from epoxy coatings incorporating lignosulfonate-doped polyaniline-poly(acrylamide co-acrylic acid) (Pani-PAmAc) upon AA2024-T3 was studied in 3.5% NaCl. Synthesised Pani-PAmAc particles were investigated using TEM, FTIR, TGA and conductivity, whilst coatings were also physically examined…
Abstract A type of fast response time (RT) liquid crystal (LC) was developed to adopt in fringe‐field switching (FFS) mode for shutter glass 3D display device, the average gray to gray level (GTG) RT can reduce from 7.43 ms to 4.48 ms at a refreshing rate of 60 Hz, and the transmittance can increase by 15.4% compared…
We study self-assembly of a binary mixture of components A and B confined in a slit-like pore with the walls modified by the stripes of tethered brushes made of beads of a sort A. The emphasis is on solvent mediated transitions between morphologies when the composition of the mixture varies. For certain limiting cases…
Phonon dynamics and phonon thermal conductivity of f.c.c. Cu are investigated in detail in the temperature range 200 1300 K within the framework of equilibrium molecular dynamics simulations making use of the Green-Kubo formalism and one of the most reliable embedded-atom method potentials. It is found that the tempor…
Transient thermoreflectance was measured from In and In-graphene composite films pressed on to different substrates that include Si, GaAs, Cu and Cu-graphene composite. Measurements were also made from Al film deposited on substrates of Cu and Cu-graphene composite. The experimental results were modeled using solution…
Chitin is a natural polysaccharide found in many diverse phyla and almost always occurs in association with protein. In this study the chitin polymer is characterized by X-ray diffraction from its naturally occurring unprocessed state through various steps used in the purification procedure. In addition, the effect of…
BACKGROUND: The L-Ala-D/L-Glu epimerases (AEEs), a subgroup of the enolase superfamily, catalyze the epimerization of L-Ala-D/L-Glu and other dipeptides in bacteria and contribute to the metabolism of the murein peptide of peptidoglycan. Although lacking in peptidoglycan, land plants possess AEE genes that show high s…
The object of this study was to develop parameter of the die forging process, such as feedstock temperature and to investigate her impact on the structure and mechanical properties of magnesium alloys in different heat treatment conditions. Tests were carried out on a 2,5MN maximum capacity vertical hydraulic press us…
The effects of small size (approximately 2 nm) gold nanoparticles on the properties of particles of cholesteric liquid-crystalline dispersions formed by double-stranded DNA molecules were analyzed. It has been shown that gold nanoparticles induce two different processes. First, they facilitate reorganization of the sp…
Polyaniline (PANI) nanofibers were synthesized by polymerization of aniline in the presence of hydrochloric acid as a catalyst and ammoniumperoxidisulphate as an oxidant by the chemical oxidative polymerization method. The product powder was pelletized with the help of hydraulic machine to study the XRD, SEM and SANS.…
Polymersomes with different surface charges were synthesized from polysuccinimide (p) by introducing positively charged polyethylenimine (PEI-P), neutrally charged polyethylene glycol (PEG-P), and negatively charged glycine (GLY-P) to the polymer backbone polysuccinimide (P). Then, the polymersomes were prepared with…
This work focuses on the characterization of the damage to a ferrite bar after exposure to ultrasounds. In particular, one of several damage zones on the surface of the bar is investigated through optic microscopes and ESEM. This damage zone is roughly circular in shape, blackish in color and have a maximum dimension…
This paper presents a deterministic performance assessment for spent fuel from deep-burn modular high-temperature reactors (DBMHRs) in the proposed Yucca Mountain repository. Typical DBMHR designs utilize fuel elements manufactured from graphite. The fuel itself is made of TRISO particles containing the fissile materi…
To suppress the thermal decomposition and to stabilize the crystal structure of Gd 3 Al 5 O 12 (GdAG) garnet, doping GdAG with smaller Ln 3+ (Ln=Tb, Dy, Ho, Er, Tm, Yb, Lu, and Y, respectively) to form (Gd,Ln)AG solid solutions was proposed in work. Carbonate precursors of (Gd,Ln)AG with an approximate composition of…
Influence of the short time external polarization of silver electrode contacted Ce0.8Sm0.2O1.9 electrolyte was studied. Silver is moving along the Ce0.8Sm0.2O1.9 surface during the -0.5 V cathodic polarization at 600°C. It caused both the increase of the electrode - electrolyte contact area and the triple phase bounda…