Materials Literature
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Several new push-pull azobenzene dyes were synthesized by diazonium salt coupling of electron-poor anilines with N,N-dialkylanilines. Their dipole moments and first-order hyperpolarizabilities were evaluated respectively from the concentration dependence of the dielectric constant of solutions in apolar solvents and b…
Results are reported for a plate impact investigation of the flow behavior of soda-lime glass. A 5 μm thick layer of soda-lime glass is sandwiched between two hard, elastic Hampden steel plates and impacted by another steel plate. The impact is skewed with respect to the direction of travel of the flyer plate in order…
By means of in-material stress gauges, failure waves in shock-compressed soda lime glass have been shown to be distinguished by a marked reduction in shear stress. To explore further the relation between failure waves and shearing resistance, a series of pressure-shear impact experiments have been performed involving…
Oxygen content of bearing steel will be reduced to below 3 ppm in the year 2000 if current trend for the reduction of oxygen in the steel continues. As a result, size of oxide inclusions will become smaller and the fatigue life will be doubled. From the viewpoint of life prediction, cleanliness evaluation methods curr…
In recent years there have been tremendous advances in the fields of chemistry, physics and biology which have a direct impact on advances in biomaterials science. Many areas of healthcare depend upon the development of novel biomaterials. This book contains contribution from scientists who have made numerous innovati…
In the mean{ eld approximation, assuming the linear concentration dependence of the thermodynamic potential coe cients and taking into account the higher harmonics of spatial order parameter modulation in the incommensurate phase and interaction between order parameter and elastic deformation, the temperature and conc…
Carbon-silica dual phase filler (CSDP filler) differs in many aspects from the traditional fillers currently used in rubber compounds. According to the characterization with different analytical techniques, this material consists of two phases, the carbon phase with finely divided silica domains dispersed therein. In…
The surface state of as-prepared AlN powders produced by direct nitridation and carbothermal methods was characterized by X-ray photoelectron spectroscopy (XPS) and X-ray excited Auger electron spectroscopy (XAES). In the as-prepared AlN powders, small peaks assigned to imide and amide groups were detected in the N1s…
The engineering and material properties of controlled low-strength material (CLSM) can be altered through the use of air-modifying additives, thereby broadening potential end-uses for CLSM. Air-modified low-water content CLSM retains the compressibility, shear, load-bearing, and flowability characteristics of non-air-…
Solutions of celtulose (Cell) in dimethylacetamide (DMAc)/lithium chloride (LiCl) solvent are spun and annealed. The resulting fibers show various polymorphs with the different coagulants and annealing temperatures. Prior to annealing, as-spun fibers show Cell III morphology without differentiating the kind of coagula…
Abstract Reaction clusters serve to carry out reactions whose thermodynamic yield is too low for practical large‐scale application. They therefore play an important role in the economics of the process and can decisively control its environmental impact. Reaction cluster synthesis must address such economic and enviro…
A neural network model of nonlinear hysteretic inductors is presented. The proposed neural network model is shown to reproduce the dynamic scalar hysteretic behavior of the current-flux relationship. Moreover, the intrinsic characteristics of the neural network approach yield a model particularly suitable when depende…
Electropolymerisation of the 5-substituted indole monomers, 5-cyanoindole, indole-5-carboxylic acid, 5-chloroindole, 5-bromoindole and 5-methoxyindole results in a redox-active film consisting of a cyclic trimer and chains of linked cyclic trimer (polymer). The monomer, trimer and polymer species are fluorescent and h…
The spin-polarized linear muffin-tin orbital method has been applied to calculate the electronic structure of $({\mathrm{Fe}}_{1\ensuremath{-}x}{\mathrm{Ni}}_{x}{)}_{4}\mathrm{N}$ $(0<~x<~1.0)$. It is of interest that the band structure and the electronic and magnetic properties of $({\mathrm{Fe}}_{1\ensuremath{…
A previously developed method for determining elastic constants of single crystals from polycrystalline specimens was applied to cubic and tetragonal zirconia. The method is based on the orientation dependence of the lattice strain of a stressed specimen as measured by X-ray diffraction and also on Kröner’s equation r…
We have demonstrated the preparation of a new family of TS-FER products using organothermal synthesis.
Mononuclear iron carboxylate complex immobilized and isolated on a modified silica surface (1) catalyzes oxidation of hexane to a mixture of hexan-1-ol, -2-ol and -3-ol without ketone formation in the presence of mercaptan, acetic acid, triphenylphosphine and O2 at ambient conditions.
New liquid crystals induced by intermolecular hydrogen bonding between 4-[3, 4, 5-tridocyloxy benzoyloxy)-4′-stilbazole (3DBSZ) and malonic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, maleic acid, fumaric acid, 3,4,5,-tridocyloxy-benzoic acid(3DBA) respectively were prepared, their liq…
Spherical particulate polysiloxanes are synthesised for the first time, chemically derivatised and employed as a support in molybdenum(VI) catalysed alkene epoxidation.
A thermoelastic problem for adhesively bonded assemblies with identical nondeformable adherends is considered. The objective of the analysis is to develop a simple stress model for the evaluation of thermally induced stresses and strains in the adhesive material due to its thermal expansion (contraction) mismatch with…