Richard G. Finke、Brian M. Rapko、Robert Saxton 等 4 位作者1986-05-01Journal of the American Chemical Society
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTrisubstituted heteropolytungstates as soluble metal oxide analogs. III. Synthesis, characterization, phosphorus-31, silicon-29, vanadium-51, and 1- and 2-D tungsten-183 NMR, deprotonation, and proton mobility studies of organic solvent solute forms of HxSiW9V3O40x-7 and HxP…
Metal-Organic Frameworks: Synthesis and ApplicationsPolyoxometalates: Synthesis and ApplicationsChemical Synthesis and Characterization
A W Clowes、Thomas R. Kirkman、M A Reidy1986-05-01PubMed
Endothelial coverage of an exposed synthetic vascular graft surface limits thrombosis and may improve long-term graft performance. In most types of synthetic graft, luminal endothelium is derived from the cut edges of adjacent artery. In this study the authors investigated the possibility that endothelial coverage cou…
Electrospun Nanofibers in Biomedical ApplicationsConnective tissue disorders researchTissue Engineering and Regenerative Medicine
E. Popov、L. Mashev、D. Maystre1986-05-01Optica Acta International Journal of Optics
The zero-order diffraction efficiency anomalies of a corrugated dielectric waveguide are studied theoretically in detail. A new and surprising phenomenon is observed: the efficiency changes from 0 to 100 per cent in the vicinity of the excitation of guided waves. The fundamental parameters of the system are found in t…
Photonic and Optical DevicesPhotonic Crystals and ApplicationsOptical Coatings and Gratings
Dimitri A. Sverjensky1986-05-01Annual Review of Earth and Planetary Sciences
Carbonatites are igneous rocks formed in the crust by fractional crystallization of carbonate-rich parental melts that are mostly mantle derived. They dominantly consist of carbonate minerals such as calcite, dolomite, and ankerite, as well as minor ...Read More
Geological and Geochemical AnalysisPaleontology and Stratigraphy of FossilsClay minerals and soil interactions
Youngchul Lee、Roger S. Porter1986-05-01Polymer Engineering and Science
Abstract The tendency of carbon fiber to nucleate the zation of poly(etherettterlcetone) (PEEK) has been evaluated by DSC and other techniques. As the carbon fiber content was increased, the supercooling necessary for PEEK crystallization decreased. The repeated melting (at 396°C) of the same PEEK sample results in a…
Polymer crystallization and propertiesbiodegradable polymer synthesis and propertiesFiber-reinforced polymer composites
R. T. Foley1986-05-01OpenAlex
Localized corrosion, which usually appears as pitting, crevice corrosion (CC), or certain aspects of stress corrosion cracking (SCC), is a multi-step process. This review is organized by a consideration of the four steps involved in localized corrosion: (1) adsorption of the reactive anion on the oxide covered aluminu…
Corrosion Behavior and InhibitionConcrete Corrosion and DurabilityAnodic Oxide Films and Nanostructures
Bernardo van Raij、J. A. Quaggio、N.M. da Silva1986-05-01OpenAlex
A procedure for the simultaneous extraction of phosphorus, potassium, calcium and magnesium from soils, by an ion‐exchange resin procedure applicable to large‐scale advisory soil testing, is described. The important steps are the disaggregation of soil by shaking in water during 15 minutes with a glass marble, the tra…
Clay minerals and soil interactionsIron oxide chemistry and applicationsPhosphorus and nutrient management
Stephen J. Perkins1986-05-01OpenAlex
Amino acid sequences, carbohydrate compositions and residue volumes are used to compare critically calculations of partial specific volumes v, neutron scattering matchpoints and 280-nm absorption coefficients with experimental v values for proteins and glycoproteins. The v values that are obtained from amino acid dens…
Protein Structure and DynamicsEnzyme Structure and FunctionCrystallization and Solubility Studies
T.L. Tansley、C. P. Foley1986-05-01OpenAlex
Room-temperature optical absorption data in the 1.5–2.5-eV range are reported for indium nitride thin films prepared by reactive radio-frequency sputtering. The fundamental absorption edge in high-purity material is located at 1.89±0.01 eV and corresponds to a direct transition at k=0, in agreement with band-structure…
ZnO doping and propertiesGaN-based semiconductor devices and materialsGas Sensing Nanomaterials and Sensors
Randy J. Read1986-05-01OpenAlex
Unrefined or partially refined models of macromolecules are generally incomplete and typically have large coordinate errors. It is shown that phase probability equations appropriate for a perfect partial structure lead to inaccurate estimates of phase probabilities in such cases. Therefore, it is necessary to use equa…
Advancements in Photolithography TechniquesMachine Learning in Materials ScienceElectron and X-Ray Spectroscopy Techniques
R.A. Fouracre、M.J. Given、B.H. Crichton1986-04-30Journal of Physics C Solid State Physics
A model has been developed that shows that an applied alternating electric field modifies the migration of ions in a solid dielectric material. In the case of a homogeneous alternating electric field, the components in the direction of the field of the ionic fluxes due to concentration gradients, when averaged over on…
Ferroelectric and Piezoelectric MaterialsAcoustic Wave Resonator TechnologiesAnalytical Chemistry and Sensors
R. O. Zaǐtsev、Е. В. Кузьмин、С. Г. Овчинников1986-04-30Soviet Physics Uspekhi
The fundamental mechanisms of a metal-dielectric transition are examined. The multiband theory of the metal-dielectric transition is reviewed, as based on realistic models of the band structure of a set of oxides and sulfides of the 3d-metals in which the transition is accompanied by structural and magnetic phase tran…
Gas Sensing Nanomaterials and SensorsMultiferroics and related materialsTransition Metal Oxide Nanomaterials
Arthur M. Lesk、Cyrus Chothia1986-04-30Philosophical Transactions of the Royal Society of London Series A Mathematical and Physical Sciences
Abstract The general response of protein structures to mutations, insertions and deletions is conformational change. Comparisons of related proteins show that a large part of the polypeptide chain retains its basic folding pattern. This ‘core’ of the structures comprises major elements of secondary structure and resid…
Protein Structure and DynamicsGlycosylation and Glycoproteins ResearchEnzyme Structure and Function
E Kampar、O. Neilands1986-04-30Russian Chemical Reviews
The principal methods for the determination of the degree of charge transfer are examined and experimental data on the intermolecular distribution of electron density in charge-transfer complexes and radical-ion salts of the π–π are surveyed. The relation between the degree of charge transfer and the ionisation potent…
Magnetism in coordination complexesPhotochemistry and Electron Transfer StudiesOrganic and Molecular Conductors Research
S. B. Dierker、R. Pindak、Robert B. Meyer1986-04-28Physical Review Letters
By use of depolarized laser relection microscopy, unique textural defects have been observed in thin tilted hexatic liquid-crystal films which result from their bond-orientational order. The temperature dependence of the bond-orientational elasticity can be deduced from these textural patterns and is in qualitative ag…
Liquid Crystal Research AdvancementsMaterial Dynamics and PropertiesSurfactants and Colloidal Systems
D.M. Follstaedt、J. A. Knapp1986-04-28Physical Review Letters
We have formed the icosahedral phase in ${\mathrm{Al}}_{86}$${\mathrm{Mn}}_{14}$, ${\mathrm{Al}}_{82}$${\mathrm{Mn}}_{18}$, and ${\mathrm{Al}}_{75.5}$${\mathrm{Mn}}_{20}$${\mathrm{Si}}_{4.5}$ alloys by the interdiffusion of elemental layers in the solid state. Annealing at 250-425\ifmmode^\circ\else\textdegree\fi{}C p…
Microstructure and mechanical propertiesAluminum Alloy Microstructure PropertiesQuasicrystal Structures and Properties
David Moss、H. M. van Driel、J. E. Sipe1986-04-28Applied Physics Letters
We demonstrate the use of third harmonic generation as a probe of the bulk symmetry properties of semiconductors. Using 20 ns, 1.06 μm laser pulses we have applied this probe to structural diagnostics of (100) annealed and unannealed Si wafers implanted with boron and arsenic ions at dosages above and below the thresh…
Laser Material Processing TechniquesSilicon Nanostructures and PhotoluminescenceNonlinear Optical Materials Studies
Heather Silyn‐Roberts、R. M. Sharp1986-04-22Proceedings of the Royal Society B Biological Sciences
Abstract A model based on geometrical crystal growth considerations is proposed for the deposition of the crocodilian, testudinian and avian eggshells. Ir each shell column, crystal deposition is initiated at a single location, from which growth fans out at all angles to the shell normal. In both co1citic and aragonit…
Paleontology and Evolutionary BiologyCalcium Carbonate Crystallization and InhibitionCephalopods and Marine Biology
Daniel S. Rokhsar、James P. Sethna1986-04-21Physical Review Letters
The energetics of icosahedral ordering in cholesteric liquid crystals are studied within the Landau mean-field approximation, in an attempt to describe the blue fog (blue phase III). We expand the free energy of a quasicrystalline phase in the high-chirality limit (coherence length much greater than pitch), and find t…
Liquid Crystal Research AdvancementsSolidification and crystal growth phenomenaQuasicrystal Structures and Properties
F. Lärché、J. Appell、G. Porte 等 5 位作者1986-04-21Physical Review Letters
The angular distribution of light scattered by an extremely dilute birefringent lyotropic phase shows two well-defined Bragg peaks providing strong evidence of a true lamellar order (lamellae \ensuremath{\sim} 40 \AA{} thick and 6500 \AA{} apart in the diluent). The steric origin of the stabilization of this stacking…
Liquid Crystal Research AdvancementsSurfactants and Colloidal SystemsNonlinear Dynamics and Pattern Formation