Materials Literature
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Solidification microstructure is a defining link between production techniques and the mechanical properties of metals and in particular steel. Due to the difficulty of conducting solidification studies at high temperature, knowledge of the development of solidification microstructure in steel is scarce. In this study…
A blue-emitting phosphor - Ca2BN2F:Eu2+ was synthesized by a solid state reaction. Ca2BN2F crystallizes in the orthorhombic system with space group Pnma (No. 62) and Z = 4. The Ca2BN2F:Eu2+ exhibites broad emission and excitation bands corresponding to the allowed f→d electronic transition of Eu2+. Concentration quenc…
Abstract Poly(ethylene terephthalate) (PET) nanocomposite films containing two different organoclays, Cloisite 30B ® (C30B) and Nanomer I.28E ® (N28E), were prepared by melt blending. In order to increase the gallery spacing of the clay particles, a sulfopolyester (PET ionomer or PETi) was added to the nanocomposites…
A facile method was adopted to perform succinylation of cellulose using succinic anhydride and a reactive extrusion process in the presence of ionic liquid (IL), 1-butyl-3-methylimidazolium chloride [Bmim]Cl. Succinylated cellulose with a degree of substitution (DS) in the range of 0.166–0.245 was obtained. Upon chara…
Stable, high-index facet Re nanoparticles have been grown by a solid state synthetic method, negating the need for solutions or surfactants to control seeding, supracrystallization and NP shape. By using mixtures of K[ReO4] and the cyclic triphosphazene [NP(O2C12H8)]3, high-index facet nanoparticles and nanocrystals ∼…
Stable silver nanoparticles (AgNPs) with narrow size distribution were non-enzymatically synthesized through hydroxyl ions (OH-) assisted bioreduction of diamine silver complex with dry Aeromonas sp. SH10 cells. The effects of reaction temperature, concentrations of OH-, silver and the dry cells on the reduction of Ag…
It was shown that polyethylene glycol molecules act as good corrosion inhibitors. Quantum chemical simulation showed the effect of molecular weight on studying polymers with repeating units 1, 2, 3, 4, and 5 and also polymers with high molecular weights with repeating units 10, 20, and 30. Using the density functional…
Nanosized Nd-doped strontium ferrites, SrNdxFe12-xO19, with x=0.3, were successfully prepared through a chemical coprecipitation process. The samples were characterized by TG-DSC, XRD, FT-IR. The results of TG-DSC and XRD showed that the single phase of Nd-doped strontium ferrite formed directly through the reaction o…
Kinetensin (KN) and its amino acids 1–8 fragment ([des‐Leu 9 ]KN), neuromedin N (NMN), and xenopsin (XP) and its two analogs (human XP‐1/xenin‐8 and XP‐2) belong to the neurotensin family of peptides and are known to stimulate the growth of human tumors. In this work, we report surface‐enhanced Raman scattering (SERS)…
The self-assembly of hyperbranched polymers has attracted much attention because of their wide application. In this article, we report a new facile surface self-assembly method for a carboxyl-ended hyperbranched polyester/platinum complex (HTD-3-Pt) and obtain ordered structural microrods with a length of 10-20 μm and…
Abstract The polypyrazolyl ligand H 4 L, a functionalised derivative of 3‐bpp [bpp = bis(pyrazol‐3‐yl)pyridine], has been used to synthesise an Fe II spin‐crossover (SCO) system [Fe(H 4 L) 2 ](ClO 4 ) 2 · 2THF · H 2 O ( 1 ). A subsequent magnetic and structural study revealed that the compound undergoes an incomplete…
The structural, magnetic, electrical and thermal transport properties of the polycrystalline samples Ca 3 Co 4− x In x O 9 ( x = 0, 0.05, 0.10, 0.15, and 0.20) have been investigated systematically. The results indicate that the In‐substitution has a negative effect on the low‐temperature ferrimagnetic transition and…
A reduced mechanism simplified from a detailed chemical kinetics mechanism containing N/H/O/K/Na elements was developed and validated in this paper. When the reduced mechanism was integrated into computational fluid dynamics (CFD) software, the effect of potassium and sodium additives on the selective non-catalytic re…
Abstract We used a macroscopic master equation for a two‐level system, with simple assumptions, to calculate the kinetic behavior of a spin‐crossover system when the equilibrium temperature interplays with the T (LIESST) temperature (LIESST = light‐induced excited spin state trapping), that is, the thermal return temp…
The thermodynamics and kinetics of the self-assembly of cylinder-forming diblock copolymers directed by the lateral confinement of hexagons have been studied by the combination of self-consistent field theory (SCFT) calculation and time-dependent Ginzburg-Landau (TDGL) theory simulation. The SCFT calculations are used…
We herein investigate the interaction of beryllium with a graphene sheet and in a bilayer of graphite by means of periodic DFT calculations. In all cases, we find the beryllium atoms to be more weakly bonded on graphene than in the bilayer. Be(2) forms both magnetic and non-magnetic structures on graphene depending on…
The enhancement of hydrogen storage in complexes of magnesium alanate ([Mg(AlH(4))(2)](n)(-) where n = 2, 3) and their anions was investigated using the B3LYP/6-311++G** method. Hydrogen atoms were chemically absorbed on [Mg(AlH(4))(2)](n)(-) (n = 2, 3) with binding energies of -83 to -91.23 kcal mol(-1). It was deter…
© 2012 Ozaki and Kutsuna, licensee InTech. This is an open access chapter distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Dis…
Fullerene nanoparticles (nC(60)) in aqueous environments can significantly enhance the transport of hydrophobic organic contaminants by serving as a contaminant carrier. In the present study, the authors examine the effect of the solvent-exchange process on nC(60) aggregate formation and, subsequently, on nC(60) 's co…
BACKGROUND/AIMS: Nephrogenic systemic fibrosis (NSF) is a highly debilitating disease that can occur in patients with reduced kidney function after application of gadolinium-based contrast agents (GBCA). In recent years, the incidence of the disease has significantly decreased. The aim of this study was to assess the…