Materials Literature
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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…
Magnesium anodization was examined in room temperature :EMIC and :DMPIC ionic liquids, where EMIC = 1‐ethyl‐3‐methylimidazolium chloride and DMPIC = 1,2‐dimethyl‐3‐propylimidazolium chloride. For all melts, the :organic chloride mole ratio was <1, yielding chloride‐rich ( i.e. , basic) compositions. The rate of magnes…
The high-temperature (573 K) adsorption of ethene, propene, propyne, carbon monoxide, and the high temperature co-adsorption of propyne–carbon monoxide have been studied over Pt/alumina and Ni/silica catalysts. The Pt catalyst was found to retain hydrogen from the reduction process, this hydrogen being released by eth…
In many polymer manufacturing processes, mass transfer operations between a high viscosity liquid and gases are applied, but mass transfer rates have been explained only using kLa. We measured kL for molten polystyrene and corn syrups by using a rotating cylinder with surface renewal action in which surface area was k…
The synthesis and structural characterization of the alkaline-earth thiolates [Sr(18-crown-6)(hmpa)2][SMes*]2 and [Ba(18-crown-6)(hmpa)(SMes*)][SMes*], displaying rare ion association modes with only one or no cation–thiolate linkages are presented.
The influence of thermal atomic vibrations in high-resolution electron microscopy is modeled by combining time-resolved molecular dynamics simulations with the multislice algorithm of HREM image simulation. The material studied is stoichiometric NiAl-B2 at room temperature and at 900 K. The difference between the new…
イカ由来β-キチンのN, N-ジメチルホルムアミド (DMF) -尿素溶媒中オルトリン酸との反応により, 高収率でリン酸化キチンを合成できた. 本反応はキチンの低分子量化を伴わず, リン酸基の導入率は反応溶媒DMFと尿素の比率で制御可能であった. 生成物のリン酸基置換度は0.25～1.4のものが得られ, 置換度0.25以上の誘導体は水溶性であった. 水溶性リン酸化キチンはカルシウムイオンを吸着して, 不溶性のアモルファス, ゲル状キチン誘導体が得られた. また牛血漿を用いた血液凝固試験でリン酸化キチンは凝固の促進作用を有することが示された.
Changes in interface chemistry and, accordingly, in interface structure of a Si3N4-SiC ceramic, due to the presence of fluorine, was found to markedly affect the mechanical response of the material. Owing to a lowered cohesive interface strength, as a consequence of fluorine segregation at grain and phase boundaries,…
In the solid-state reaction between ultrafine chromia powder, which was produced by the decomposition of chromium formate, and amorphous boron powder, Cr5B3, CrB, Cr3B4, Cr2B3 and CrB2 were obtained at the mole ratios of 1.5 to 7.0 at 1600°C in vacuum for 2h. A single phase of CrB was formed at the mole ratio of 3.0 a…