Materials Literature
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Improved powder XRD patterns for the titanium suboxides, Ti n O 2 n −1 (4≤ n ≤9), have been calculated from published single-crystal structures. To provide the best match with experimental data, the entire diffraction traces were simulated, and d -spacings and intensities extracted in the same manner as from experimen…
A laboratory study was conducted to examine the effects of increasing concentrations of oxalate and citrate anions on soil phosphate (P), aluminum (Al), and iron (Fe) solubility and P sorption/desorption from some volcanic ash soils. Duplicate 1.0 g soil samples were shaken with 10‐mL portions of 0.01M NaCl solution c…
Intrinsic defects of the nearly stoichiometric (110) surface of TiO2 have been studied by means of scanning tunneling microscopy. Temperature treatment at 870≤T≤1070 K in ultrahigh vacuum induces changes of the orientation of single steps. Line defects along [001] and oxygen vacancies are formed simultaneously as pred…
A new method to obtain nearly homeotropic alignment with small pretilt angles off the substrate normal employing vacuum oblique evaporation of SiO x has been developed. Selected pretilt angles in the range of (0–5) degrees can be easily obtained with this method and it is not very sensitive to the deposition angle, an…
Inducer expulsion, a phenomenon in which rapidly metabolizable sugars cause cytoplasmic dephosphorylation and efflux of pre-accumulated sugar-phosphates (sugar-P), has been documented for Streptococcus pyogenes, Streptococcus bovis, and Lactococcus lactis, but not for other Gram-positive bacteria. Using intact cells a…
The EROPAQ quality assurance project started in 1994 with TLD postal dose intercomparisons for photon beams used in 47 radiotherapy centres in the middle and eastern European countries. The photon dose intercomparisons include beam output checks and beam quality checks. Since an acceptance limit of +/- 3% was chosen f…
Article Influence of Heat Treatment on the Physical, Mechanical and Tribological Properties of a Zinc-based Alloy was published on March 1, 1996 in the journal International Journal of Materials Research (volume 87, issue 3).
A matching algorithm is proposed for aligning microscope images obtained using different modalities, making use of cross‐correlations of outputs from Prewitt's edge filter. Brightfield, phase contrast and differential interference contrast microscope images of algal and bacterial cells from an experimental, high‐rate…
This paper presents a theoretical study on the initial stage of diamond nucleation during chemical vapor deposition. A kinetic model is developed to investigate the time evolution of diamond nucleation on carbide‐forming substrates. The calculated results provide some insight into the effects of substrate materials, s…
Reliable identification of the diatoms is of crucial importance to understand the changing environmental signals stored in the sediments of Lake Baikal. Light and scanning electron microscopy combined with mathematical methods, including principal components analysis, were used to estimate morphological diversity in t…
The preliminary dielectric and neutron scattering results obtained on two granular ferroelectrics (with particles diameters ∼ 7 nm) – sodium nitrite and Rochelle salt embedded into microporous glass matrix are presented.
The characterization of strictly anaerobic bacteria which can reduce thiosulfate into hydrogen sulfide is described. Although thiosulfate reduction is a common metabolism in the bacterial world, its implication regarding microbiologically influenced corrosion has never been investigated. Thiosulfate is in ecosystems w…
Near-infrared surface-enhanced Raman scattering (NIR SERS) spectra were obtained for 2,2-bipyridine, 5,6-benzoquinoline, pyrene, anthracene, and fluoranthene on SERS pre-activated thin-layer chromatography (TLC) plates by Fourier transform (FT) Raman spectroscopy. The pre-activation of TLC plates was based on a proced…
The behaviour of n- and p-type crystalline silicon wafers in quiescent concentrated aqueous HF solutions has been studied for immersion times up to 205 days. The etch rate, as determined from weighing experiments, decreased with time to values as low as after prolonged etching. The experimental findings are consistent…
A processable new thermosetting polymer containing carborane and siloxane groups with acetylenic linkages was examined for antioxidative properties during high-temperature oxygen exposure. Samples of the polymer were annealed in argon or air at 320–400°C or argon at 900°C and oxidized at 400 and 500°C. Their structure…
Compressional wave velocities ( V p ) have been determined up to 2350 K on CaSiO 3 , MgSiO 3 , CaMgSi 2 O 6 , CaAl 2 Si 2 O 8 and Ca 3 Al 2 Si 3 O 12 glasses and melts from Brillouin‐scattering experiments made with a 180° backscattering geometry. At the glass transition, the decrease of V p with increasing temperatur…
A coherent picture for the so-called rapid oscillation (RO) phenomena observed in ${(\mathrm{TMTSF})}_{2}X(X=\mathrm{Cl}{\mathrm{O}}_{4} \mathrm{and} \mathrm{N}{\mathrm{O}}_{3})$ is presented. By comparatively studying the two very similar systems, yet with quite different RO features, we have identified the origin of…
The axial intensity of axicons illuminated by a coherent wave usually exhibits rapid oscillations from diffraction on the sharp edges of the aperture of the element. These oscillations can be suppressed when the diffractive version of the axicon is illuminated from a polychromatic source. This possibility is examined…
Dielectric dispersion of the ferroelectric liquid crystal (CS-1022) around the SC∗-SA transition and temperature dependence of the spontaneous polarization were measured by varying the cell thickness. Behaviour of the dielectric constant is well described by a formula including the contribution of the soft mode, the G…
Mesa etched transmission line model (TLM) test structures with different contact lengths have been fabricated on heavily boron doped polycrystalline diamond films. The behavior of the contact and contact end resistance measurements can be fully explained using the TLM. No influence of the grain size on the contact res…