Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
This study covers the synthesis of polymers of aniline, o-phenylenediamine, and their copolymers by chemical oxidation in HCl medium. The composition of the copolymers was changed by varying the monomer feed ratio. For examining the effect of composition on copolymer structure and properties, the copolymers were chara…
Factors limiting the strain rate available to superplastic deformation in oxide ceramics are discussed from existing knowledge about high-temperature plastic deformation and cavitation mechanisms. Simultaneously controlling these factors is essential for attaining high-strain-rate superplasticity (HSRS). This is shown…
A magnetic characteristic measurement, a motor characteristic forecast, and an experimental evaluation of various powder magnetic cores were performed aiming at a fixed quantity grasp when the powder magnetic core was applied to the motor core as the magnetic material. The manufacturing conditions were changed, and ma…
The organometallic tetraradical 1,2,4,5-[(eta)7-C7H7)V(all eta]5-C5H4)]4C6H2 has been prepared and structurally characterized. The isotropic EPR spectrum displays 29 a(51V) hyperfine lines, the intensity distribution slightly deviating from binomial. Exchange coupling therefore approaches the strong exchange limit, J(…
Diatoms have attracted the interest of those involved in nanotechnology and the development of this discipline for research and practical application. These microorganisms exhibit self-assembly of silica on the micrometer scale, with parts of diatoms measuring on the nanometer scale. They exhibit a wide variety of sha…
Effect of anisotropy in grain boundary energy on kinetics of grain growth and topological properties of grain structure in two dimensions was simulated by the phase field model. Misorientation distribution in a system with anisotropic grain boundary energy is found to be time-dependent. Fraction of low angle grains bo…
Ultra-high-resolution X-ray crystallography of macromolecules (i.e. resolution better than 0.8 Angstroms) is a rising field that promises to provide new insight into the structure-function relationships of biomacromolecules. The picture emerging from macromolecular structures at this resolution is far more complex tha…
Repassivation kinetics of duplex stainless steel (DSS) 2205 was examined using a scratched electrode technique in 4 M NaCI solution at 90°C with exploring the relation between the repassivation kinetics and the susceptibility to stress corrosion cracking (SCC) measured by slow strain rate test. The repassivation kinet…
A highly fluorescent dual-dye, comprising 4,4-difluoro-8-(aryl)-1,3,5,7-tetramethyl-2,6-diethyl-4-bora-3a,4a-diaza-s-indacene and 1-pyrenyl fragments linked orthogonally at the pseudo-meso position, displays a wide choice of excitation wavelengths due to intramolecular energy transfer and undergoes efficient fluoresce…
The resistance of aluminium foam against projectile penetration has been studied experimentally and analytically and the results are presented in this paper. The penetration depth of a rigid, flat-nosed projectile into an aluminium foam target was measured at various impact velocities between 20 m/s and 120 m/s. An an…
The direct supramolecular assembly of organofunctional mesostructures with a vesicular hierarchical morphology is reported for the first time for (SiO2)1-x(LSiO1.5)x compositions, where L is a mercaptopropyl group and x = 0.10-0.30.
Recycling of dusts and other wastes of steelmaking is becoming to a necessity of two reasons: due to high contents of iron oxides dusts are valuable raw material for steelmaking and tightening environmental legislation makes the landfill disposal of wastes more expensive. Fine dust fractions from various stages of ste…
Abstract An appraisal of a semiempirical methodology recently introduced by us for the theoretical calculation of luminescence quantum yields is presented. Six coordination compounds of Eu 3+ were considered, possessing either benzoylacetonate or benzoyltrifluoroacetonate, together with either water, 2,2′‐bipyridine,…
In this paper we theoretically study the left-handed behaviors in a two-dimensional triangular photonic crystal made of elliptical rods in air. An absolute left-handed region is found in the second photonic band by using the plane wave expansion method to analyze the photonic band structure and equifrequency contours.…
Crystal structures of dipeptides with hydrophobic channels presented in the past all have hexagonal symmetry. The compounds L-valyl–L-alanine acetonitrile solvate hydrate and L-valyl–L-serine trifluoroethanol solvate represent the first examples of structures with monoclinic symmetry, which has the effect of changing…
Tungsten ͑W͒ thin films were deposited using a modified chemical vapor deposition ͑CVD͒ process, called pulsed CVD, and the film properties were characterized as nucleation layers for a W-plug fill process.In this study, the deposition stage is composed of four steps, resulting in one deposition cycle: ͑i͒ reaction of…
The luminescent properties of the new red phosphors in the solid solution system Ca x Cd 1 − x MoO 4 : Eu 3 + , Li + are reported. Their dominating emission peaks are at 615 nm, which satisfies color purity. Under the excitation of ∼ 320 nm UV light, some selected samples have luminescent intensity 30% higher than tha…
Collagen-silica hybrid materials have been considered for potential biomedical applications. Understanding of the collagen-silica interactions is the key to control hybrids structure and properties. For this purpose, the effect of sodium silicate and sodium chloride addition at two concentrations, 0.83 and 10 mM, on t…
Current trends in e-textiles and smart fabrics try to find a symbiosis of electronics and clothing. Aug-menting a fabric with an intrinsic sensing function is an elegant way to measure the environment. This approach supports the idea of a smooth combination of the two worlds of electronics and clothing. Our hybrid fab…
Biosyngas was investigated as a potential fuel for solid oxide fuel cells. C-H-O ternary diagrams were employed to evaluate the thermodynamics of carbon deposition with selected gas compositions. Impedance measurements were carried out with Ni/GDC and SDC anodes. Gas compositions representing biosyngas were used in th…