Materials Literature
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Pb(Zr0.53Ti0.47)O3/CoFe2O4 (abbreviated as PZT/CFO) multiferroic composite thick films have been prepared on the Pt/Ti/SiO2/Si substrate by using a hybrid sol?gel process. The thick films were finally annealed at 650??C in air and the ferromagnetic, ferroelectric and dielectric properties of these films were investiga…
Following the supramolecular synthon approach, a combinatorial library comprising 35 organic salts derived from 7 dicarboxylic acids (malonic-, succinic-, adipic-, L-tartaric-, maleic-, phthalic-, and isophthalicacid) and 5 primaryalkyl amines Me-(CH2)n-NH2 (n = 11-15) was prepared and scanned for gelation. About 66%…
Gadolinium and Nephrogenic Systemic FibrosisVal M. RungeAudio Available | Share
Spin polarized density functional theory is used to investigate the incorporation of substitutional Si atoms in the zigzag (5,0) and in the armchair (3,3) BC(2)N nanotubes (NTs). Our results show that the Si impurities in BC(2)N NTs have lower formation energy when compared to Si in carbon and boron nitride NTs. In ne…
Highly corrosion-resistant Mg97.25Zn0.75Y2 and Mg96.75Zn0.75Y2Al0.5 (at.%) alloys have been produced by the consolidation of rapidly solidified ribbons. Rapid solidification brought about the grain refinement and an increase in the solid solubility of Zn and Y into the Mg matrix, enhancing microstructural and electroc…
The enhancement factor of gold nanoparticles linked by DNA in a three-dimensional (3-D) network structure was evaluated as 1.12 × 10 7 and shown to be greater than a two-dimensional (2-D) array by a factor of ∼10, possibly due to the dimensional expansion of resonance and periodicity of the so formed structures. Unifo…
We studied the electrical transport properties of single-crystal epitaxial Co-doped ZnO films grown by molecular-beam epitaxy. Upon increasing temperature, transport mechanisms changed from hard-gap resistance to Efros variable range hopping. The magnetic field and the temperature dependence of magnetoresistance revea…
The thermotropic, structural, and morphological properties of blends of a disk-like liquid crystalline phthalocyanine derivative and a lath-shaped perylenetetracarboxidiimide mesogen derivative have been studied by combining differential scanning calorimetry, thermal polarized optical microscopy, X-ray diffraction, so…
The introduction of nanoscale features brings with it a high density of surface interface boundaries and effectively introduces an additional boundary material that exhibits properties different from the surrounding surfaces. We systematically varied the feature size of self-assembled polystyrene-block-poly(methyl met…
The amphiphilic block copolymer formed by a hydrophobic body of polystyrene and a hydrophilic head of poly[9,9-di(2-(2-tetrahydropyranyl-oxy)hexyl)fluorene-alt-9,9-dioctylfluorene] was synthesized, and its solution was used to create thin films with ordered pattern of holes, by means of the breath figure technique. Th…
High-energy x-ray diffraction and ab initio molecular-dynamics simulations demonstrate that the short-range order in the deeply undercooled ${\text{Zr}}_{2}\text{Ni}$ liquid is quite nuanced. The second diffuse scattering peak in the total structure factory sharpens with supercooling, revealing a shoulder on the high-…
The structural, magnetic and luminescence properties of praseodymium-doped zirconia powders of compositions Pr0.03Zr0.97O2 and Pr0.05Zr0.95O2 synthesized by a sol?gel process have been investigated. X-ray diffraction patterns indicate that these materials crystallize in a tetragonal fluorite-type structure. Scanning e…
The in vitro and in vivo biocompatibility of the ZnO nanoparticles were evaluated using cell model and animal model, by MTT assay, flow cell cytometry, pathological optical and electron microscopy examinations. Both the L929 cell and Hela cell proliferative activity were strongly inhibited by the presence of ZnO nanop…
The thermal decomposition of polymers (poly(vinyl chloride) (PVC) and polystyrene (PS)) has been studied with synchrotron VUV photoionization mass spectrometry at low pressure. Pyrolysis products formed at different temperatures have been identified by the measurement of photoionization mass spectra at different photo…
A heterogeneous one-dimensional model is used to simulate a three way catalytic converter (TWC). The mathematical model consists of mass and energy balance equations in the gas and solid phases and accounts for 15 heterogeneous chemical reactions. Langmuir−Hinshelwood type kinetics is used to represent most of the rea…
PURPOSE: To prospectively compare 0.1 mmol/kg doses of gadobenate dimeglumine and gadopentetate dimeglumine for contrast-enhanced MRI of brain lesions at 3 Tesla (T). MATERIALS AND METHODS: Forty-six randomized patients underwent a first examination with gadobenate dimeglumine (n = 23) or gadopentetate dimeglumine (n…
In this paper we study the propagation of light through an asymmetric array of dielectric multilayers built by joining two porous silicon substructures in a Fibonacci sequence. Each Fibonacci substructure follows the well-known recursive rule but in the second substructure dielectric layers A and B are exchanged. Even…
Silk fibroin (SF) microspheres were prepared by a water-in-oil emulsion solvent evaporation method without any surfactants. The water and oil phases were SF aqueous solution and paraffin, respectively. The SF microspheres with spherical shape and smooth surface were separated into the size ranges of < 80 μ m, 80–150 μ…
Solid meso-tetrakis(4-sulfonatophenyl)porphyrin (TPPS(4))-chitosan supramolecular complexes were prepared by addition of porphyrin to an aqueous solution of chitosan at pH values. The precipitates obtained were assigned as 1 (pH 6.8) and 2 (pH 2.5) and characterized by spectroscopic, thermal, and microscopic methods.…
The mechanism of rapid and selective heating of magnetic metal oxides under the magnetic field of microwaves which continues beyond the Curie temperature ${T}_{c}$ is identified by using the Heisenberg model. Monte Carlo calculations based on the energy principle show that such heating is caused by nonresonant respons…