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
Atsushi Yokotani、T. Sasaki、Kunio Yoshida 等 5 位作者1986-04-21Applied Physics Letters
Potassium dihydrogen phosphate (KDP) crystals were grown under the irradiation of ultraviolet light. The bulk laser damage threshold was improved to two to three times (15–20 J/cm2) compared to the case of crystals grown by conventional methods. Microbes such as germs and bacteria are frequently generated in the KDP s…
Photorefractive and Nonlinear OpticsSolid-state spectroscopy and crystallographyOptical and Acousto-Optic Technologies
M. Hamedoun、A. Wiedenmann、J. L. Dormann 等 5 位作者1986-04-20Journal of Physics C Solid State Physics
The spinel solid solutions ZnCr 2x Al 2-2x S 4 have been studied by means of neutron diffraction in the concentration range 0.85<or=x<or=1. For the pure compound (x=1), several powder samples with different heat treatments and a single crystal were studied. At T N (x=1)=15.5, T N (x=0.9)=14.5 and T N (x=0.85)=14…
Magnetic and transport properties of perovskites and related materialsMultiferroics and related materialsAdvanced Condensed Matter Physics
E. Birks1986-04-16physica status solidi (a)
Results of the electrocaloric effect (ECE) studies of Pb(Sc0.5Nb0.5)O3 ceramic in the temperature range from 320 to 400 K are reported. A great value (ΔTmax = 0.9 K) of the electrocaloric effect is observed. The temperature and field dependence of ECE is consistent with the presumption of a polar and nonpolar phase mi…
Ferroelectric and Piezoelectric MaterialsMultiferroics and related materialsMicrowave Dielectric Ceramics Synthesis
Kenji Shimizu、So-haku Okeya1986-04-15Journal of the Physical Society of Japan
Spin echo NMR measurements on 159 Tb have been done in magnetically ordered state of the cubic Laves phase compounds Tb(Fe 1- x Co x ) 2 and Tb 0.8 Y 0.2 Fe 2 . Satellite structures observed in the compounds with x ≤0.2 are assigned to various Fe, Co configurations in the nearest neighbor shell. The resonance frequenc…
Magnetic properties of thin filmsMagnetic Properties and ApplicationsMagnetic Properties of Alloys
Kei-Ichiro Kobayashi、K. Kanematsu1986-04-15Journal of the Physical Society of Japan
Lavas phase compounds (Y x Zr 1- x )Fe 2 have C15 structure, and are ferromagnetic. They absorb hydrogen under the condition of 1 atm, room temperature, to form hydrides (Y x Zr 1- x )Fe 2 H y . Hydrogen content y increases from O(ZrFe 2 ) to 4.2(YFe 2 ) with x continuously. The dependence of µ Fe and T c of hydrides…
Rare-earth and actinide compoundsHydrogen Storage and MaterialsMagnetic Properties of Alloys
J. L. Martı́nez、Yajun Gao、T. López-Rı́os1986-04-15Physical review. B, Condensed matter
Surface-enhanced Raman scattering spectra of p-nitrobenzoate on obliquely evaporated Ag films are presented. A surface anisotropy of the Raman enhancement for grazing evaporation angles was found.Received 24 December 1985DOI:https://doi.org/10.1103/PhysRevB.33.5917©1986 American Physical Society
Gold and Silver Nanoparticles Synthesis and ApplicationsPlasmonic and Surface Plasmon ResearchSpectroscopy and Quantum Chemical Studies
D. C. Dahn、J. F. Carolan、R. R. Haering1986-04-15Physical review. B, Condensed matter
We report measurements of the low-temperature specific heat of ${\mathrm{Li}}_{\mathrm{x}}$${\mathrm{NbS}}_{2}$, for 0\ensuremath{\le}x\ensuremath{\le}1. Samples were prepared by intercalating lithium into ${\mathrm{NbS}}_{2}$ in electrochemical cells. X-ray diffraction and electrochemical measurements show that stage…
Physics of Superconductivity and Magnetism2D Materials and ApplicationsIron-based superconductors research