Materials Literature
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A wide range of experimental data from several sources, and covering most of the factors known to influence water tree growth, has been collated and assessed in terms of the independent growth parameters. Systematic trends have been identified wherever possible, allowing a critical evaluation of the postulated treeing…
Abstract Sodium metavanadate (NaVO 3 ) has been reported earlier to exhibit ferroelectric behaviour below 380 °C, but unlike many other known ferroelectrics it does not show a very strong dielectric anomaly, indicating that the structural change during the ferroelectric phase transition may be only a slight modificati…
Dense-packed assemblies of hard spheres are standard models of disorder in metallic glasses. Such packings are difficult to obtain with identical disks on flat two-dimensional surfaces because triangular packing units are easily incorporated into a hexagonal close-packed lattice. By packing disks on a two-dimensional…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPreparation and structure of [Cu3(dpm)3(OH)]2+[BF4]2-Douglas M. Ho and Robert BauCite this: Inorg. Chem. 1983, 22, 26, 4079–4083Publication Date (Print):December 1, 1983Publication History Published online1 May 2002Published inissue 1 December 1983https://pubs.acs.org/doi/10…
Calcium silicate hydrate (C‐S‐H) can be viewed as a solid solution, 0.833Ca(OH) 2 .SiO 2 .0.917H 2 O‐xCa(OH) 2 , at equilibrium at 30°C. On this basis, the change in Gibbsfree energy (ΔG r ) in the solid‐solution reaction was calculated from solubility duta for C‐S‐H in water. The change in ΔG r with real ratio decrea…
Dissolution characteristics of mixed-oxide nuclear fuels are important considerations for prediction of biological behavior of inhaled particles. Four representative industrial mixed-oxide powders were obtained from fuel fabrication enclosures. Studies of the dissolution of Pu, Am and U from aerosol particles of these…
In order to elucidate the role of W in improving the passivity of austenitic stainless steels, anodic polarization curves and X-ray photoelectron spectra have been obtained for pure W and W-containing steels passivated in 1 N HCl, 0.1 M NaCl, and in Cl−-containing H3PO4. Similar experiments were also performed on Cr-N…
An investigation is made of the vectorial and geometrical representation of the polarization of light propagating through a weakly inhomogeneous absorbing anisotropic and optically active medium. When the approximations of geometrical optics are used, Maxwell’s equations lead to the equation ∂G/∂x3 = (i/2)(Ω + iT)G, g…
Summary Dialysis and re‐suspension of red‐brown earths showed dispersion in distilled water independent of the adsorbed cations. Whenever the electrolyte concentration is below the critical coagulation concentration the soil and clay will disperse. Mechanical disturbance greatly enhances the dispersion process. The ex…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA tetranuclear platinum compound containing two diamagnetically coupled platinum(III) atoms: x-ray structural analysis of bis[bis[.mu.-.alpha.-pyrrolidonato(1-)-N2O2]bis[cis-diammineplatinum(II, III)]](Pt-Pt) hexanitrate dihydrate, [Pt4(NH3)8(C4H6NO)4](NO3)6.2H2OKazuko Matsu…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAnalysis of the proton and carbon-13 NMR spectra of [Ir(Hbpy-C3,N')(bpy-N,N')2]3+: evidence for a carbon-bonded structurePeter J. Spellane, Richard J. Watts, and Calvin J. CurtisCite this: Inorg. Chem. 1983, 22, 26, 4060–4062Publication Date (Print):December 1, 1983Publicati…
Calorimetric measurements have been carried out on specimens of natrolite, mesolite, and scolecite in order to assess the thermodynamic properties of a zeolite series having the same alumino-silicate framework. Low-temperature heat capacity and high-temperature enthalpy increments of natrolite and scolecite were measu…
Abstract Neutron scattering studies have indicated that the non-coordinated water at smectite surfaces has a similar mobility to that of bulk water, but that the water coordinated to the cations is immobile on the time scale of the neutron measurements. Thus hydrophylic polymers can readily displace the non-coordinate…
The Dutch experience with pellet reactors is reviewed, with special emphasis on a new reactor concept based on crystallization on a seeding material with sodium hydroxide. During long‐term, full‐scale operations this concept has provided low‐cost softening and eliminated problems with solids disposal.
Abstract The limits and effect on cell size of silver substitution into synthetic tetrahedrite, Cu 10 (Zn,Fe,Cd 2 ) Sb 4 S 13 , are investigated for comparison with natural tetrahedrite. The limit of Ag substitution into natural zincian tetrahedrite is ∼ 4 atoms per half unit cell and into iron tetrahedrite ∼ 6.5 atom…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDielectric hysteresis and nonlinearity in a 52/48 molcopolymer of vinylidene fluoride and trifluoroethyleneT. Furukawa, A. J. Lovinger, G. T. Davis, and M. G. BroadhurstCite this: Macromolecules 1983, 16, 12, 1885–1890Publication Date (Print):December 1, 1983Publication Hist…
Evolution under the Fokker–Planck equation predicts that the central densities of globular clusters will become infinite in finite time with density profiles |$\rho\propto r^{-\alpha}$| at that moment (and |$\alpha\simeq2.21$|). The dynamical evolution of the cores after that time, t0, is predicted here. Reasons are…
Recent advances in the understanding of the dynamic plastic response of crystalline solids are discussed. At the level of individual dislocations progress is being made on measurements of dislocation mobility at high stress levels and on elastodynamics solutions for transient dislocation motions. More progress is requ…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis, characterization, and ground electronic state of the unstable monomeric manganese(IV) porphyrin complexes diazido- and bis(isocyanato)(5,10,15,20-tetraphenylporphinato)manganese(IV). Crystal and molecular structure of the bis(isocyanato) complexMark J. Camenzind,…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTConfirmation of the Mayo mechanism for the initiation of the thermal polymerization of styreneYen K. Chong, Ezio Rizzardo, and David H. SolomonCite this: J. Am. Chem. Soc. 1983, 105, 26, 7761–7762Publication Date (Print):December 1, 1983Publication History Published online1…