Materials Literature
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While it is well known that introduction of Pro residues into the interior of protein alpha-helices is destabilizing, there have been few studies that have examined the structural and thermodynamic effects of the replacement of a Pro residue in the interior of a protein alpha-helix. We have previously reported an incr…
Abstract A series of interpenetrating polymer networks (IPNs) based on carboxylated nitrile rubber (XNBR) and poly(alkyl methacrylate)s such as poly(methyl methacrylate) (PMMA), poly(ethyl methacrylate) (PEMA) and poly(butyl methacrylate) (PBuMA) were synthesized. The compositions of the IPNs were also varied by chang…
Abstract Carbon black‐filled high‐density polyethylene (HDPE)/ethylene ethylacrylate copolymer (EEA) blends were prepared and the effect of crosslinking of the blends on the positive temperature coefficient (PTC) stability was investigated. By irradiation and silane‐crosslinking methods, crosslinked composites with va…
Abstract Conductive adhesives, based on highly filled silver particles dispersed in a liquid epoxy resin, with an aliphatic amine [diethyltriamine (DETA)] as a curing agent, were investigated. A third component was added to the epoxy/Ag system to obtain composites of better conductivity, or similar conductivity but at…
Thermally induced semiconductor-metal phase transitions taking place in Al/VO 2 /insulator and VO 2 /insulator film systems upon recording optical data are investigated. Experiments show that the rate of the processes depends on thermophysical parameters of the films, as well as on the energy exposure. The dynamic ran…
We show that a polygonization of the crystal (formation of grain subboundaries) takes place during the growth in thin-sample directional solidification of a transparent nonfaceted alloy at solidification rates lower than the cellular-bifurcation threshold. We give experimental evidence that this phenomenon is due to a…
Xiaodong Tao, Alwyn Eades; Alternatives to Image Quality (IQ) Mapping in EBSD, Microscopy and Microanalysis, Volume 8, Issue S02, 1 August 2002, Pages 692–693,
Abstract The deposition of stoichiometric V 2 O 5 films for abrasion‐resistant V 2 O 5 /TiO 2 anatase catalysts was investigated. Direct current magnetron sputtering from ceramic oxide targets in an argon/oxygen atmosphere was chosen as the deposition technique. Layers were prepared with different oxygen mole fraction…
Abstract The effect of manganese pretreatment on the corrosion behaviour of AA6061 T6–10% Al 2 O 3 metal–matrix composite was investigated in aerated aqueous 3.5% NaCl solution using electrochemical impedance spectroscopy (EIS). The corrosion inhibition characteristics were studied for two series of manganese‐pretreat…
The scattering phenomenon from an arbitrary-shaped end of a asymmetrical slab waveguide for the cases of TE and TM guided modes is simulated by means of boundary integral equations that are called guided-mode extracted integral equations. The integral equations that we derive can be solved by the conventional boundary…
A dense (>98% theoretical density), residual‐stress‐free m‐ZrO 2 /40 vol% nickel composite with K I C ∼ 5.4 MPa·m 1/2 and ς f ∼ 225 MPa has been obtained using a simple wet processing route and subsequent sintering at 1430°C in a 90% argon/10% hydrogen atmosphere. The mechanism for release of internal stresses by t…
We have grown single crystals of LSMO(327) for x =0.35 and x =0.40 and investigated the elastic properties systematically, together with the electrical resistivity, magnetoresistance and magnetization. Elastic anomaly around the magnetic transition temperature T c , at which remarkable metal-insulator transition occur…
The results of experimental research on the magnetic and resonance properties, heat capacity, muon spin relaxation, and neutron scattering of single-crystal copper metaborate CuB2O4 are reviewed. The results of a symmetry analysis and of modeling by the method of the phenomenological thermodynamic potential are presen…
To develop a thermoplastic elastomer with high blood compatibility, a 2-methacryloyloxyethyl phosphorylcholine (MPC) polymer was blended with the segmented polyurethane (SPU) for preparing the polymer alloy. A tensile strength measurement was carried out to evaluate its mechanical strength. The mechanical strength of…
Banana-shaped achiral compounds, the 1,3-phenylene bis[4-(alkenyloxyphenyliminomethyl)benzoate]s, were synthesized with varying length of the alkenyl group; their ferroelectric properties are described. The smectic mesophases, including a switchable chiral smectic C (SmC*) phase, were characterized by differential sca…
Spherical β‐SiC powders that are a few micrometers in size have been prepared by heating a mixture of phenolic resin powder and fine‐grained fumed silica at 1600°C in argon. The overall process is composed of two consecutive steps: (i) the formation of silica‐coated spherical carbon powder and (ii) carbothermal reduct…
Mixed-layer minerals were analyzed by far infrared (FIR) spectrometry. The FIR spectra show two bands, which occur at 84-87 and 108-114 cm -1 for mixed-layer illite-smectite (I-S) and at 71-79 and 103 cm -1 for mixed-layer phlogopite/vermiculite (P-V). The 103 cm -1 band seen in the P-V series from Palabora is indepen…
The different kinds of crystalline orientations which can occur in industrially relevant isotactic polypropylene (i-PP) films are compared with those generally observed for other semicrystalline polymers. The peculiar bimodality typical of the uniplanar-axial orientation which is present in two-step biaxially stretche…
The gene of chitinase in the silkworm, Bombyx mori, generates four mRNA products by alternative splicing. Nucleotide sequences of the entire gene for chitinase and respective cDNAs demonstrate that the pre-mRNA undergoes alternative splicing at both the 5' and 3' regions. At the 5' region, the pre-mRNA experienced dif…
UNLABELLED: The aim of the present study was to verify the effect of chitosan as a possible adjuvant in the complex management of obesity. METHOD: Fifty obese women (22-59 years, BMI > 30) participated in the study. A six months program consisted of 2-hour meetings with a physician, psychologist and dietitian, in a gr…