Materials Literature
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A Landau expansion of the elastic energy in the strains is used to study two-dimensional structures in tetragonal-orthorhombic ferroelastics with constraints. Local energy minima are found with respect to the components of the displacement and so the strains satisfy the compatibility relation; this interdependence of…
The photoelectric characteristics (independent of ferroelectric polarization) of metal-ferroelectric-metal thin film structures upon exposure to radiation in different ranges of mercury arc lamp spectrum are studied for the Pb(Zr 0.5 2Ti 0.48 )O 3 ( PZT ) ferroelectrics. The PZT films on platinized silicon substrates…
Hydrogen permeation and corrosion inhibition characteristics of isomers of phenylenediamine, toluidine, and nitroaniline were studied on mild steel in 1M HCl. The Tafel extrapolation method was used to determine the inhibition efficiency, while the Devanathan–Stachurski technique was used to determine the hydrogen per…
The microstructure of strained epitaxial La0.7Sr0.3MnO3 (LSMO) films on a LaAlO3(001) substrate has been investigated by means of electron diffraction and high-resolution electron microscopy in cross-section and plan view. Fourier transforms of the high-resolution images allow us to deduce the local lattice parameters…
The plasma polymerization of the perfluoroallyl benzene monomer [(C6F5)CF2CF=CF2] was carried out under pulsed discharge conditions. Progressive changes in the composition of the plasma generated polymers were observed with sequential changes in the duty cycle of the pulsed discharge, as other reaction variables remai…
Abstract Thermal effects in dynamic hydrogen storage by adsorption at room temperature and high pressure are studied theoretically and experimentally. The system of adsorbate–adsorbent used was hydrogen in granular activated carbon. The theoretical analysis was based on heat‐ and mass‐transfer modeling in a packed‐bed…
A nickel catalytic probe was used to determine the density of neutral oxygen atoms in a glass tube. The O source was a low pressure weakly ionized inductively coupled rf oxygen plasma. The recombination coefficient for polycrystalline nickel (purity 99.8 at. %) was determined experimentally by use of a nickel tube wit…
Abstract The rheological properties of conventional polyethylene terephthalate (PET) resins are not particularly suitable for low density extrusion foaming with physical blowing agents; as a result, chemically modified resins through chain extension/branching reactions are often used. Such resins have overall higher m…
Abstract Grease‐resistant paper has been produced by coating paper with isolated soy protein (ISP). Tensile strength (TS) of ISP‐coated paper is 28–30 MPa (between the TS of paper and of ISP film). TS of the ISP‐coated paper (2.3 kg/ream) was highest (36.0 MPa) among other ISP‐coated papers, but elongation (E) of the…
Thin film material of oriented multiwall carbon nanotubes was obtained by noncatalytical chemical vapor deposition in a glow-discharge plasma. The film phase composition, surface morphology, and structural features were studied by Raman and electron microscopy techniques. Low-voltage electron field emission of thin fi…
The lamellar organization of melt-crystallized β-isotactic polypropylene was studied by atomic force microscopy (AFM) after permanganic etching. Hedritic objects grown at a high crystallization temperature (140–143 °C) were investigated. Essential features of the hedritic development were revealed by the characteristi…
Abstract Acid variable charge subsoils exhibit a positive charge, which retards the passage of anions through the soil profile. The objective was to study the NO − 3 adsorption isotherms and the effect of changing the subsoil positive charge on NO − 3 and Cl − retention, estimate NO − 3 and Cl − retardation in differe…
Type II and III fibrillar collagens were localized by immunogold electron microscopy in resin sections of human femoral articular cartilage taken from the upper radial zone in specimens from patients with osteoarthritis. Tissue samples stabilized by high-pressure cryofixation were processed by freeze-substitution, eit…
Summary Soils derived from loess are extensive in Europe and are well suited for forestry. They are suspected to be poor acid buffers, however. We have estimated the weathering stage and acid neutralizing capacity of acid soils under forest in a toposequence on loess in the Belgian silt belt. The soils vary distinctly…
Rutherford backscattering spectroscopy was used to investigate the persistence of cation-diffusion- limited oxidation in three, low-Fe 2+ -bearing MgO-Al 2 O 3 -SiO 2 glasses (base glass compositions along the enstatite-cordierite-liquid cotectic; total Fe levels of 0.04, 0.19, and 0.54 at%). The glasses were reacted…
A mechanistic model for silicon (Si) physiology is developed, interfaced with a model of nitrogen (N) physiology, which is capable of simulating the major documented facets of Si–N physiology in diatoms. The model contains a cell cycle component that is involved in regulating the timing of the synthesis of valves, gir…
We recently identified the phaG(Pp) gene encoding (R)-3-hydroxydecanoyl-ACP:CoA transacylase in Pseudomonas putida, which directly links the fatty acid de novo biosynthesis and polyhydroxyalkanoate (PHA) biosynthesis. An open reading frame (ORF) of which the deduced amino acid sequence shared about 57% identity with P…
The effects of simulated marine environments on the performance of wood/thermoplastic composites under quasi-static and fatigue loading is investigated. The material under consideration consists of wood flour embedded in a thermoplastic matrix. The effects of additives and processing methods were included in the durab…
The transition from sputtered Al to electroplated Cu interconnects for future microelectronic devices has led to an interest in understanding the relationships between the microstructure and texture of Cu that might impact electrical performance, similar to what has been done for Al. Electroplated Cu undergoes a recry…
We report a quantitative analysis of the change in optical appearance of a supported film of liquid crystal that is induced by specific binding of an immunoglobulin (IgG) to a surface-bound antigen. We interpret the optical appearance to indicate the amount of bound IgG and thus the concentration of IgG in solution. T…