The hydration of .ALPHA.-tricalcium phosphate.
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Glass transition in the hard-sphere model
Equations of state and transport data for the hard-sphere fluid suggest a quasi-thermodynamic transition from supercooled fluid to amorphous solid at a density slightly greater than the equilibrium freezing density. This has been substantiated with a lengthy MD computation in which the density was increased very gradu…
Piezoelectric-piezomagnetic composites with magnetoelectric effect
In a previous paper1 we described the magnetoelectiic effect in Co ferrite-Ba titanate unidirectionally solidified eutectic, which can reach a conversion factor (α factor = 4π(dP/dH) 200 times higher than that of the best single-phase material at room temperature, Cr2O3. We subsequently developed sintered composites w…
Effect of counterion substitution on the type and nature of nematic lyotropic phases from nuclear magnetic resonance studies
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEffect of counterion substitution on the type and nature of nematic lyotropic phases from nuclear magnetic resonance studiesK. Radley, L. W. Reeves, and A. S. TraceyCite this: J. Phys. Chem. 1976, 80, 2, 174–182Publication Date (Print):January 1, 1976Publication History Publ…
Structures of zinc octaethyl formylbiliverdinate hydrate and its dehydrated bis-helical dimer
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStructures of zinc octaethyl formylbiliverdinate hydrate and its dehydrated bis-helical dimerG. Struckmeier, U. Thewalt, and J. H. FuhrhopCite this: J. Am. Chem. Soc. 1976, 98, 1, 278–279Publication Date (Print):January 1, 1976Publication History Published online1 May 2002Pu…
Molecular-orbital calculations on cluster compounds of gold
Molecular-orbital calculations on [Au6]2+ and [Aug9]3+ clusters have shown that the overlap of the gold 6s orbitals makes a dominant contribution to the bonding. Co-ordination of ligands to these ‘ bare ’ metal clusters encourages a more favourable hybridisation of the metal orbitals and results in stronger radial met…
The Determination of the Elastic Constants of Nematic Liquid Crystals
The elastic constants K11 and K33 are calculated from the threshold field He associated with the Frederiks transition in a magnetic field of a uniform planar and a horneotropic layer, respectively. The elastic constant K22 is determined indirectly using a twisted planar layer.The errors associated with the determinati…
Surface defects and structural transitions in very low anchoring energy nematic thin films
It has been discovered that the products of degradation of heated paper evaporated on glass constitute a low anchoring energy substrate for the nematic phase of MBBA (methoxy benzylidene butylaniline). The extrapolation length b=K/2Ws is of the order of 100 μm. In very thin specimens the anchoring is conical at low te…
Formation of hydroxyapatite at low supersaturation
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFormation of hydroxyapatite at low supersaturationA. L. Boskey and A. S. PosnerCite this: J. Phys. Chem. 1976, 80, 1, 40–45Publication Date (Print):January 1, 1976Publication History Published online1 May 2002Published inissue 1 January 1976https://pubs.acs.org/doi/10.1021/j…
Electronic structure to tungsten and some of its borides, carbides, nitrides, and oxides by x-ray electron spectroscopy
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElectronic structure to tungsten and some of its borides, carbides, nitrides, and oxides by x-ray electron spectroscopyRichard J. Colton and J. Wayne. RabalaisCite this: Inorg. Chem. 1976, 15, 1, 236–238Publication Date (Print):January 1, 1976Publication History Published on…
Composite Materials and Their Use in Structures
This volume is a substantial contribution to the literature on fatigue, providing a wealth of information on the fatigue properties of many engineering alloys, and a comprehensive review of the existing literature in most areas of fatigue damage and crack propagation; nonetheless, this reviewer found it to be a disapp…
Supported Catalysts Obtained by Interaction of Organometallic Compounds of Transition Elements with Oxide Supports
Rapid development of organometallic chemistry of transition elements in recent years has greatly influenced homogeneous catalysis. Many organometallic compounds of transition metals have been directly used as effective catalysts; e.g., π-ally1 complexes of transition elements for diene reactions [1–3], carbonyl comple…
Preparation of Tetrathiafulvalenes (TTF) and their Selenium Analogs -Tetraselenafulvalenes (TSeF)
All articles of this category This review describes the synthetic approaches to tetrathiafulvalenes (TTF) and their selenium analogs-tetraselenafulvalenes (TSeF). Synthetic methods are conveniently classified according to the general mechanistic paths found in the literature. Preparation of the precursors of tetrathia…
Acetates and acetato-complexes. Part 2. Spectroscopic studies
The effect of different modes of co-ordination on the i.r. spectrum of the acetate ion is reviewed. Infrared and 1H n.m.r. spectra of a series of metal acetates and acetato-complexes are reported. and the type of co-ordination identified: B2O(O2CMe)4 and Na[B2O(O2CMe)5] contain both bridging and unidentate acetate; Al…
Convenient preparation and physical properties of lithium intercalation compounds of Group 4B and 5B layered transition metal dichalcogenides
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTConvenient preparation and physical properties of lithium intercalation compounds of Group 4B and 5B layered transition metal dichalcogenidesDonald W. Murphy, Francis J. Di Salvo, George W. Hull Jr., and Joseph V. WaszczakCite this: Inorg. Chem. 1976, 15, 1, 17–21Publication…
Laser-induced fluorescence line narrowing in Eu glass: A spectroscopic analysis of coordination structure
By means of the techniques of laser-induced fluorescence line narrowing, the emission spectrum of ${\mathrm{Eu}}^{3+}$ in a sodium-barium-zinc silicate glass, and the temporal dependence of the emission, were measured as functions of of excitation wavelength. Large variations were observed in the intensities and wavel…
Exchange interaction in polynuclear complexes. Part 1.—Principles, model and application to the binuclear complexes of chromium( III )
A model is proposed for exchange interaction taking into account the impact of the m.o. concept in inorganic chemistry. We define four principles that such a model should follow; invariance with respect to a unitary transformation between the orbital basis functions, validity of Heitler–London wavefunctions for the lo…
The Photooxidative Degradation of Polypropylene. Part I. Photooxidation and Photoinitiation Processes
All unstabilized organic polymers are degraded upon exposure to terrestrial sunlight in the presence of oxygen. However, the rates of photooxidative deterioration vary enormously with polymer structure, and range from a few months outdoor lifetime for polypropylene (PPH) and poly(l,3-phenylene isophthalamide) up to se…
Cross sections for ionization of inner-shell electrons by electrons
A survey is given of the available cross-section data for ionization of inner-shell electrons by incident electrons in the range of interest for electron-probe microanalysis and for Auger-electron spectroscopy of solid surfaces. Owing to the paucity of data, the bulk of the discussion is limited to $K$-shell and $L$-s…
Broadening of X‐ray diffraction lines of crystals containing dislocation distributions
Abstract The first part of the paper deals with a brief review over the present stage of the (kinematical) theory of the broadening of X‐ray diffraction lines of crystals containing dislocation distributions. In the second part experiments of X‐ray line broadening of plastically deformed Cu and NaCl single crystals ar…