Materials Literature
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(CH3)2NC6H4NC6H4O is a merocyanine dye that exists in resonance between the two extreme conformations of a keto and an eno form. The keto form is more stable in the gas phase and the eno form is believed to be more stable in solution. We show that the keto form can prevail in nonpolar solvents, but in polar solvents l…
This paper aims to determine the electromagnetic forces acting in a power transformer, when a current corresponding to the first peak of a three‐phase circuit flows in the windings. The finite element method for the evaluation of the field’s values is applied, and the electromagnetic forces acting in a power transform…
Materials with high elements (C, B, N. . . ) appear to be a great interest for the future. The most dense forms of these materials are characterized by exceptional physico-chemical properties (diamond, c-BN, β-C3N4. . . ). The last material (C3N4) issued from "ab-initio" calculations has instigated the development of…
Two new radical cation salts, (BETS)6Bi3Cl12·PhCl 1 and (BETS)2Bi2Cl8 2, where BETS is bis(ethylenedithio)tetraselenafulvalene, have been obtained and their structures and conducting properties studied. Salt 1 has a layered structure, consisting of radical cation layers of the α type, and segregated anion sheets conta…
We examined the regulation of collagenase production by the monocyte/macrophage THP-1 cell line when these cells were exposed to poly(2-hydroxyethyl methacrylate) (PHEMA) hydrogel surfaces with different chemistries and morphologies. Tissue culture modified polystyrene (TCP), used as a control surface, induced the max…
Recycled newsprint (ONP) and dry process aspen fiber were combined with styrene maleic anhydride (SMA) copolymers containing either 7 or 14 percent maleic anhydride. The fiber-filled SMA composites were equivalent or superior to unfilled SMA in strength, stiffness, and notched Izod impact strength. ONP performed surpr…
It is known these days that case-hardening bearings have a longer life than through-hardening ones under severe lubrication conditions (i.e. mixing-in of foreign particles in the lubrication oil). To explain this fact, we first presented the mechanism of stress relaxation at the debris dent edge [1]. According to test…
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Single crystals of (Mn 2.4 Cu 0.6 )TeO 6 (I), Ba 2 MnTeO 6 (II) and Pb(Mn 0.5 Te 0.5 )O 3 (III) have been prepared by crystallization from fluxes. X-ray investigations led to rhombohedric symmetry (I): R3̄, (II): R3̄m with the trigonal lattice constants (I): a = 8.826(1), c = 10.687(2) Å, Z = 2. (II): a = 5.817(8), c…
(1) 切込みや逃げ面接触長さを変化させることにより, 切屑, 被削材, 工具への切削熱の流入割合を求めることができた.(2) 切削熱の切屑への流入割合は, 切削速度の上昇とともに増加し, 被削材, 工具へは減少していく.(3) 高速切削になるにつれて, 逃げ面での摩擦による発熱は無視できなくなる.
The effect of alkali metals added to Cu ion-exchanged Y-type (Cu-NaY) zeolite catalysts on the oxidation activity and the selectivity is investigated using the gas-phase catalytic oxidation of benzyl alcohol as a model reaction. The added alkali metals such as K have been found to promote significantly the catalytic o…
Explosive shock compression of poly(methineimine) produced a large portion of amorphous graphitic carbon nitride of composition CN 0.2 and small amounts of diamond-like carbon containing a slight amount of nitrogen. Codeposition of the two materials suggests the possibility of cubic phase transformation of heterocycli…
The interfacial reaction between (Pr 0.8 Sr 0.2 ) y MnO 3 (PSM, y=0.9, 1.0, 1.05) film and 3 mol% yttria tetragonal zirconia (TZ3Y) substrate has been studied at 1200 and 1400°C in air. A diffusion layer of Pr and Mn in zirconia, which was identified to be a cubic phase of zirconia, was detected in all specimens. When…
The kinetics of the electron transfer self-exchange reaction [Fe3O(O2CCMe3)6(py)3]+ + [Fe3O(O2CCMe3)6(py)3] ⇄ [Fe3O(O2CCMe3)6(py)3] + [Fe3O(O2CCMe3)6(py)3]+ have been measured by NMR line broadening. Both reactants are paramagnetic and it was possible to measure broadening of lines of each component by exchange with t…
The exchange of chloride ion by phosphate ions in [Zn-Al-Cl] layered double hydroxide was investigated using X-ray diffraction and infrared spectroscopy. The effects of the pH of the solution containing the phosphate ions on the ion exchange was studied. The best sample in terms of crystallinity, was obtained at pH 8.…
This paper deals with the analysis of the generated torque of the hysteresis motor using finite element method, The material property of the hysteresis ring in the hysteresis motor is characterized by the asymmetric two dimensional magnetic permeability tensor. The torque has been computed effectively by using permeab…
The XPS spectra of Gibbsite were collected with a VSW HA150 using monochromatic Al Kα x-radiation. Monochromatic radiation provides a distinct clarity to the peak structure in the valence band of Gibbsite due to the absence of interfering x-ray satellites from the intense O 2s region. Variations in the intensities and…
X-ray photoelectron spectroscopy was employed for the in situ study of the interactions between thermally deposited Al atoms and polyaniline films of different intrinsic oxidation states. Quantitative changes in the N 1s core-level line shape, the evolution of the Al 2p core-level spectra, and the changes in surface s…
At temperatures below 150 K in rigid glycerol glasses, [Rh(III)(s-NN) 3 ](PF 6 ) 3 complexes display a 3 ππ* phosphorescence characteristic of the s-NN ligand [s-NN = 1,10-phenanthroline (phen), 4-Mephen, 4,7-Me 2 phen, and 3,4,7,8-Me 4 phen]. Above 150 K but below the melting point of glycerol, a temperature-dependen…
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…