Materials Literature
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During tempering process of steel materials, a plastic strain occurs along loading direction even if the macro-scopic stress is less than yield stress. The authors name this phenomenon “tempering plasticity”. The tempering plasticity may occur by not only external force but also residual stress. It can be expected, th…
Bismuth-doped fibers are promising active media for the creation of lasers in the near IR region. This paper reviews recent results on the development of new efficient lasers – bismuth-doped fiber lasers operating at wavelengths 1150 – 1775 nm.
Recently a high amorphous polyvinyl alcohol (HAVOH) which can be easily melt processed has been patented and commercialized with the trade name G-Polymer. In this work, we report on the characterization of clay-G-Polymer composites obtained by melt processing of HAVOH with two commercial chemically-modified organoclay…
The effect of the thiourea on the electrochemical impedance during copper electrodeposition was investigated using a rotating ring disk electrode. The rest potential of the copper electrode measured in the solution containing thiourea was shifted to less noble due to the adsorption of thiourea. The cathode polarizatio…
The aim of this work is the presentation of two different approximations for improving the production of carbon fibers through the introduction of alternative precursors. The first approach concerns the development of novel polyacrylonitrile block copolymers through activators' generated by electron transfer-atom tran…
Neodymium magnets contain rare earth elements. In this study, rare earth elements were recovered from neodymium magnets using the molten salt electrolysis process, thereby making the existing recycling processes for neodymium magnets obsolete. Using anodic polarization, rare earth elements were leached by controlled p…
Modeling of spallation polymer particles in polymer ablated arcs was conducted to numerically simulate its dynamics and thermal decomposition. We had found that spallation particles ejected from the polyamide materials contacting thermal plasmas experimentally. For the modeling of the particle dynamics, the temperatur…
The binding interaction of rhenium(I) complexes fac-[Re(CO)3(NN)(py)]+, py = pyridine and NN = 1,10-phenanthroline (phen), 4,7-diphenyl-1,10-phenanthroline (ph2phen) or 4,7-dichloro-1,10-phenanthroline (Cl2phen), and bovine serum albumin (BSA) was investigated at physiological pH using emission intensity variation and…
In this study, diamond-like carbon (DLC) films are coated by bipolar-pulsed PECVD onto oxynitriding-treated JIS SKD11 steel. In order to evaluate the properties of the DLC/oxynitriding films on SKD11 steel, Raman spectroscopy analysis, wear tests, adhesion tests, hardness tests and corrosion resistance inspections are…
In vivo General Trends, Filtration and Toxicity of Nanoparticles The medical field is a vastly expanding one and with the discovery of nanoparticles (carbon nanotubes, diamondoids, fullerenes, gold and silver nanoparticles, quantum dots, etc.), there lies a vast field of unsolved medical diagnoses to be reassessed. Up…
We demonstrate the first Cr2+:CdSe single crystal laser with diode laser array pumping. Laser efficiency of 12% with output power of 280 mW was obtained. Tunable CW operation was observed in 2450 – 3060 nm range.
For ? ? 0 and 0 ? ? < 1 < ?, we denote by K(?,?,?) the class of normalized analytic functions satisfying the two sided-inequality ? < K (Zf'(z)/f(z) + z2f''(z)/f(z))<? (z ? U), where U is the open unit disk. Let K? (?, ?, ?) be the class of bi-univalent functions such that f and its inverse f-1 both belong to the clas…
In the present work the absorption of flutamide from suppositories containing hydrophilic tamarind alginate microparticles after rectal administration in rats was investigated with the purpose of enhancing bioavailability and to avoid hepatic toxicity. Microparticles were developed by ionic gelation method and optimiz…
Objective(s): Lipid-based nanoparticles (NLP) are PEGylated carriers composed of lipids and encapsulated nucleic acids with a diameter less than 100 nm. The presence of PEG in the NLP formulation improves the particle pharmacokinetic behavior. The purpose of this study was to prepare and characterize NLPs containing M…
NH3-SCR has become the most popular and successful process of controlling the emission of NOx from coal-fired power plants. Scientists have been always working hard to design a series of new NH3-SCR catalyst to perform an appealing catalytic ability in practical application. Due to equipping with AFX framework structu…
Nematic liquid crystals (NLCs) have proved to be excellent materials for nonlinear optics (NLO) and its applications because of their large nonresonant nonlinearity and their extended spectral transparency. The aim of this paper was to investigate nonlinear refraction index of eutectic mixture of heptylcyanobiphenyl 7…
Structural features of novel corrosion-resistant LC 200N steel were investigated. Mssbauer spectrometry was chosen as a principal method of investigation. Surface as well as bulk properties were studied using Conversion Electron Mssbauer Spectrometry and transmission technique, respectively. Complex behaviour of magne…
Ecological concerns and the impending depletion of fossil fuels are driving the development of new bio-based, green products. Natural fibers are used increasingly as a filler or reinforcement in commercial thermoplastics due to their low cost, high specific properties and renewable nature. Agricultural byproducts and…
This paper discusses the influence of the magnetic properties of the stator core on cogging torque in 8-pole 12-slot surface-mounted permanent-magnet synchronous motors from the perspective of magnetic energy. In the finite element analyses of magnetic fields with modeled stator BH curves, cogging torque decreases dra…
The behavior displayed by thermoluminescence (TL) glow curve analysis and photoluminescence (PL) spectra of calcium -yttrium-oxide phosphor doped with cerium at variable concentration of Ce3+(0.2-2.5 mol%) ion. Phosphor was prepared by solid state reaction method with calcination temperature 1000°C and sintering tempe…