Materials Literature
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Magnetic properties of anisotropic M-type Sr-ferrite containing La and Co (Sr1-xLaxCoxFe12-xO19) was investigated in detail. At a composition of x = 0.3, the magnetic properties for permanent magnets were much improved, with the highest values of Br = 4.45 kG, HcJ = 4.82 kOe, and (BH)max = 4.86 MGOe. The temperature d…
The high-temperature reaction of pure metals with silicon diimide Si(NH) 2 in a specially developed radiofrequency furnace has been successfully applied to the synthesis of novel highly condensed nitridosilicates. With SrCO 3 as an additional starting material this procedure has now been extended to the synthesis of o…
The elastic moduli of yttria (Y 2 O 3 ) samples that were made from powders with various particle morphologies were studied by means of ultrasonic measurements. The soundwave velocities in the longitudinal and transverse modes were measured. The elastic moduli were calculated from the sound velocities and density. For…
The electrical and dielectric properties of co-continuous polystyrene (PS)/poly(methylmethacrylate)(PMMA) blends loaded with carbon black (CB) of a special grade (BP 1000) have been studied. They strongly depend on the selective localization of the CB particles at the blend interface quite consistently with the double…
Continuous mammalian cell lines are important hosts for the production of biological pharmaceuticals. However, these cell lines show some severe disorders in primary metabolism, which they have in common with many cancer cells. This leads to a high throughput of substrates giving a low energy yield and ample toxic sid…
Using a model potential function we have performed a molecular dynamics simulation of several static and dynamical properties of glycerol in the crystal, glass and liquid phases. Comparison with available experimental data shows an excellent agreeent and proves the validity of the potential model used. For the calcula…
The behavior of a system of macroscopic particles introduced in a nematic liquid crystal is studied theoretically. The energy of the pair interparticle interaction associated with the director elastic field deformation is found. The interaction intensity and character are studied as functions of the distance, the geom…
The critical exponents of the second-order ferromagnetic-paramagnetic phase transition of ${\mathrm{La}}_{1\ensuremath{-}x}{\mathrm{Sr}}_{x}{\mathrm{CoO}}_{3}$ $(0.20<~x<~0.30)$ compounds are obtained. The results $0.43<~\ensuremath{\beta}<~0.46,$ $1.39<~\ensuremath{\gamma}<~1.43,$ and $4.02<~\ens…
The effect of hydrogen on stress corrosion cracking (SCC) of pipeline steels in the near-neutral pH solutions that form in coating disbondments was studied using slow strain rate tests (SSRT), polarization techniques, scanning electron microscopy (SEM), and secondary ion mass spectrometry (SIMS). Results showed hydrog…
The mechanics and materials approach to fatigue problems in engineering materials aspects of fatigue threshold stress range for short crack growth fatigue strength assessment of AlSi7Mg castings micromechanical modelling of fatigue in nodular cast iron direct observation of the formation of striations fatigue fracture…
The simple overlap model is used to calculate crystal field parameters from the crystal structure. It is applied to 25 rare earth and some actinide and 3d transition element compounds for which crystal field parameters have been previously determined experimentally. The model is based on effective charges, located aro…
Quantum-confined CdS nanowires with diameters around 4 nm and lengths ranging from 150 to 250 nm were grown for the first time from cadmium bis(diethyldithiocarbamate) [Cd(DDTC)2]2 by removal of the four thione groups with ethylenediamine (en) at 117 °C for 2 min.
We investigated changes in structures and properties of the endomysium and perimysium during development of semitendinosus muscle in relation to the increase in toughness of pork using samples from neonates to 55-mo-old pigs. The shear force value of pork increased linearly until 6 mo of age, and the rate of increase…
A simple tight-binding plus dispersion model is developed to describe the stacking of graphite planes, and then applied to the study of multi-walled carbon nanotubes. According to this model, the variations in the interlayer interaction energy as two nested nanotubes are rotated and translated relative to one another…
The decimal reduction times of Streptococcus faecium, Listeria monocytogenes, Salmonella enteritidis, and Aeromonas hydrophila corresponding to heat treatment at 62 degrees C were 7.1, 0.34, 0.024, and 0.0096 min, and those corresponding to manosonication treatment (40 degrees C, 200 kPa, 117 microm) were 4.0, 1.5, 0.…
We have studied the three-component liquid crystal mixture reported to exhibit ‘thresholdless antiferroelectricity’ [Inui et al., J. Mater. Chem., 1996, 6, 671]. We find that the thresholdless or V-shaped switching is obtained in the absence of antiferroelectricity. This analog electro-optic response is due to the fie…
In order to search for a common structural motif in the phosphate-binding sites of protein-mononucleotide complexes, we investigated the structural variety of phosphate-binding schemes by an all-against-all comparison of 491 binding sites found in the Protein Data Bank. We found four frequently occurring structural mo…
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Mesoporous tin oxide stable up to 500 °C has been prepared for the first time using both cationic and neutral surfactants.
Superlattices formed by arrays of Pt or Au nanoparticles have been obtained by layer-by-layer deposition by using dithiols as cross-linkers. The superlattices have been characterized by X-ray diffraction, photoelectron spectroscopy, and scanning tunneling microscopy. The core-level intensities of the metal and of the…