Materials Literature
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It is demonstrated through the comparison of analytical, numerical, and experimental results that the existence of excess eddy current losses can be explained by the peculiar nature of the nonlinear diffusion of electromagnetic fields in magnetically nonlinear laminations. The essence of this peculiar nature is that n…
A bis(ether amine) containing the ortho-substituted phenylene unit and pendant tert-butyl group, 1,2-bis(4-aminophenoxy)-4-tert-butylbenzene, was synthesized and used as a monomer to prepare polyimides with six commercial dianhydrides via a conventional two-stage procedure. The intermediate poly(amic acid)s had inhere…
By linking C2 type axial ligands such as 2,2‘-biphenoxy or 2,2‘-binaphthyloxy to the metal of a metallophthalocyanine (MtPc) as axial ligands, the effective symmetry of the chromophore was lowered, as manifested in the splitting of the Q00 band, which is reasonally explained by an excitonic interaction between the axi…
BaFe 11.9 Mn 0.1 O 19 powders were prepared by a sol–gel method. Magnetic and structural properties of the powders were characterized by Mössbauer spectroscopy, x-ray diffractometry, and vibrating sample magnetometry. X-ray diffraction and Mössbauer measurements showed that the BaFe11.9Mn0.1O19 had an M-type hexagonal…
Abstract A simple theoretical model of network degradation around ultrasonically pulsating cavities is considered. The model is based on the concept of overstressed chains and provides a simple tool to estimate a number of chains which should be involved in mechanochemical degradation at a given amplitude of ultrasoni…
Anisotropic magnetoresistance (AMR) in strained Pr0.67Sr0.33MnO3 thin films has been studied by measuring the resistance as a function of the angle between the applied magnetic field direction and the film normal with the current always perpendicular to the magnetic field. The results show that both compressive- and t…
Although phosphate sorption is a well‐understood phenomenon in soils, less is known of its effect on electrophoretic mobility (EM), isoelectric point (IEP), and clay particle dispersion in Oxisols. High phosphate sorption and high stability of aggregates are characteristic of Oxisols. Phosphate sorbed as inner‐sphere…
The power loss (Pcv) was analyzed by combining two methods. The first, Pcv, is divided into hysteresis loss (Ph) and residual loss (Pr) from the frequency dependence of the power loss according to the method of Otsuki et al., and, second, the loss factors are attributed to domain wall motion (Pw) and the rotation magn…
Water solubility in silica melts was determined at 100-600 MPa, 1200-1350 °C, and at each temperature (T) was found to increase with pressure (P). At P ≤ 250 MPa, the effect of T on water solubility in silica melts is small and within analytical precision (±0.15 wt% H 2 O). A positive correlation with T was observed a…
peer reviewed
A Σ = 11, {332} nickel bicrystal was grown by solidification. The aim of this paper is to show the evolution of the grain-boundary (GB) structure depending upon the position in the bicrystal of the extracted sample. Conventional transmission electron microscopy and high-resolution transmission electron microscopy (HRT…
A comprehensive model has been developed for the computation of corrosion rates of carbon steels in the presence of lithium bromide (LiBr)-based brines that are used as working fluids for absorption refrigeration cycles. The model combines a thermophysical module that provides realistic speciation of aqueous systems w…
Several banana-shaped liquid crystal materials with perfluorinated terminal chains have been synthesized. A dimorphism SmA-B2 was proved by X-ray studies and electro-optical measurements. The unusual ratio d/L (d = layer spacing, L = molecular length) and the unexpected behaviour of the layer spacing at the phase tran…
In this article a study on the melting behavior and microstructure of semicrystalline poly(ethylene naphthalene-2,6-dicarboxylate) (PEN) prepared by crystallization from the glass under different annealing conditions is presented. The influence of the annealing temperature (Ta), annealing time (ta), and the heating ra…
The (FePt)100−xCrx alloy thin films with x=0–16 at. % were fabricated on natural-oxidized Si(111) substrate by dc magnetron sputtering. The as-deposited films were annealed between 300 and 750 °C in order to transform the soft magnetic fcc γ-FePt phase to the hard magnetic fct γ1-FePt phase. The addition of Cr in the…
Abstract: Two additional cDNA clones containing genes which encode fucoxanthin chlorophyll a/c binding proteins (Fcps) of the centric diatom Cyclotella cryptica have been sequenced. The first cDNA clone containing fcp12 had an insert size of 871 base pairs (bp). The open reading frame (ORF) of 693 bp corresponds to a…
The dynamics of a single-air bubble trapped in a resonant sound field in water has been characterized by Mie scattering and a Streak camera with high spatial and temporal resolution. The streak images show that in the endphase of the cavitation collapse the scattered light intensity is no function of the bubble radius…
We have synthesized two forms of erbium tetracyanoplatinates, Er2[Pt(CN)4]3.21H2O (red form) and Er2[Pt(CN)4]2.SO4.11.5H2O (yellow form), and determined their crystal structures by X-ray diffraction. While the red form crystallizes in the orthorhombic space group Pbcn, with a = 15.4848(3) A, b = 13.8186(2) A, c = 19.0…
We present the results of molecular dynamics simulations of two-dimensional (2D) hard disk systems in the vicinity of melting. The simulations are used to calculate the elastic constants, which can be used to estimate the location of the Kosterlitz-Thouless dislocation unbinding transition. Simulations on defect-free…
The response of Al 2 O 3 and Al 2 O 3 /SiC nanocomposites to lapping and polishing after initial grinding was investigated in terms of changes in surface quality with time for various grit sizes. The surface quality was quantified by surface roughness ( R a ) and by the relative areas of smooth polished surfaces as op…