The myosin alkali light chain proteins and their genes
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2pabsorption spectra of the3delements
The near-edge structure of the 2p absorption edges of the complete series of the 3d transition metals has been investigated by high-resolution electron-energy-loss spectroscopy. Structures in the spectra were observed that could not be resolved in previous studies. The data are compared with single-particle calculatio…
L2,3absorption spectra of the lighter3dtransition metals
A theory is presented for the x-ray absorption spectra of materials characterized by bandwidths which are somewhat larger than the (quasiatomic) electron correlation energies. Assuming that an empty-band approximation is appropriate for nearly empty bands we show that the problem is much akin to the well-known Coulomb…
Quasicrystals with arbitrary orientational symmetry
We introduce a ''generalized dual method'' for generating quasicrystal structures with arbitrary orientational symmetry in two and three dimensions.Received 22 August 1985DOI:https://doi.org/10.1103/PhysRevB.32.5547©1985 American Physical Society
Surface-conductive polymer films by reticulate doping with organic metals
A new method for obtaining surface-conductive polymer systems, related to the reticulate doping technique, is presented. The surface layer of a non-conductive macromolecular material doped with 0.2-1.0 wt.% of a conductive charge-transfer complex is treated with solvent vapour to induce precipitation of the initially…
Breakdown experiments in diluted SF6at elevated temperatures
The breakdown voltage in diluted SF 6 was studied at elevated temperatures up to 4000K. The measurements were carried out in a diaphragm shock tube behind the reflected shock wave. The temperature dependence of the electric strength of pure and diluted SF 6 may be described by two factors E c =E c0 ( rho / rho 0 ) chi…
Almost Critical Behavior of the Anchoring Energy at the Interface between a Nematic Liquid Crystal and a SiO Substrate
The anchoring energy at the interface between the nematic liquid crystal 4-$n$-pentyl-4\ensuremath{'}-cyanobiphenyl (5CB) and a glass plate treated by oblique evaporation of SiO is studied by measurement of the torque exerted on the surface by the nematic subject to an orienting magnetic field. The anchoring energy is…
The AC conductivity and dielectric constant of lithium niobate single crystals
The AC conductivity sigma ( omega ) and dielectric constant epsilon ' of lithium niobate single crystals have been measured along the ferroelectric c-axis in the temperature range 77-700K and in the frequency region 0.1-100 kHz. At low temperatures, below 400K, the AC conductivity can be expressed as sigma ( omega )=A…
States determined by photoelectron spectroscopy in the perchlorate and perrhenate of TMTSF
The photoelectron spectroscopic binding energies of Se 3d 5/2 , O 1s, and Cl 2p 3/2 or Re 4f 7/2 have been measured in tetralmethyltetraselenafulvalenium (TMTSF) perchlorate and perrhenate, tetrabutylammonium perchlorate and perrhenate, and potassium perchlorate and perrhenate. It has been found that the binding energ…
A statistical theory of fracture in a two-phase brittle material
Abstract A statistical theory of a two-phase material consisting of a brittle matrix with a dispersion of tougher second-phase particles is developed. In this material, failure does not occur immediately a microfracture is initiated at a flaw in the matrix. Stable cracks spanning the second-phase particles are possibl…
Structure of the GDP Domain of EF-Tu and Location of the Amino Acids Homologous to ras Oncogene Proteins
A 2.7 angstrom resolution x-ray diffraction analysis of a trypsin-modified form of the Escherichia coli elongation factor Tu reveals that the GDP-binding domain has a structure similar to that of other nucleotide-binding proteins. The GDP ligand is located at the COOH-terminal end of the beta sheet and is linked to th…
ENERGY MIGRATION IN EU3+ COMPOUNDS ; ITS DEPENDENCE ON DIMENSIONALITY AND EU3+-EU3+ DISTANCE
The compound EuAl3B4O12 shows thermally activated energy migration among the 5D0 excited level. In NaEuTiO4 this migration reduces to two-dimensional, down to the lowest temperatures, whereas in EuMgB5O10 one-dimensional migration is observed. For short distances and low temperatures the Eu3+-Eu3+ transfer occurs by e…
Charge characteristics of thermomagnetically treated poly(vinylidene fluoride) films
Abstract The surface charge of poly(vinylidene fluoride) films, which were magnetically treated at different temperatures, was measured using an improved method described by Sessler. Changes of the charge densities at both surfaces of the sample were studied in dependence on the magnetic field strength, temperature an…
EFFECT OF THE ONE-DIMENSIONAL STRUCTURE ON THE ENERGY TRANSFER IN Li6Gd (BO3)3
The Gd3+ fluorescence has been studied in Li6Gd (BO3)3. Energy migration among Gd3+ and trapping by impurities at high temperature and perturbed Gd3+ ions at low temperature are observed. The cross-over from a fast diffusion regime to a diffusion-limited regime at low temperature is attributed to the quasi one-dimensi…
Studies on the Flotation of Chrysocolla
This paper summarizes the results of numerous investigations on the structure, surface properties and flotation behaviour of chrysocolla. Until the late sixties, chrysocolla was considered to be a hydrated copper silicate without fixed mineral composition. Recent articles, however, have revealed that chrysocolla is a…
Deformation twinning in the intermetallic compound Cu2Sb
Deformation twins have been observed in the intermetallic compound Cu2Sb. The theory of Bevis and Crocker (1968) has been applied to calculate, using a computer program, possible twinning modes in the tetragonal lattice of Cu2Sb. Twins in five separate crystals have been studied by two-surface methods in order to esti…
A Standard Platinum/Silica Catalyst
The platinum on silica catalyst designated EUROPT-1 has recently become available as a standard reference catalyst for the scientific communities in academy and industry. The material, which was manufactured by Johnson Matthey, has been characterised by the Council of Europe’s Research Group on Catalysis, and the full…
The crystal structure of jaskolskiite, Cux Pb2+X (Sb, Bi)2-x S5(x ≈ 0.2), a member of the meneghinite homologous series
Article The crystal structure of jaskolskiite, Cux Pb2+X (Sb, Bi)2-x S5(x ≈ 0.2), a member of the meneghinite homologous series was published on October 1, 1985 in the journal Zeitschrift für Kristallographie - Crystalline Materials (volume 171, issue 1-4).
In-Pile Observations of Fuel and Clad Relocation During LMFBR Core Disruptive Accidents in the STAR Experiments
The reactivity effects of the initial fuel and clad motion during unprotected loss-of-flow accidents (ULOFs) strongly influence the accident progression in liquid-metal fast breeder reactors. To study these phenomena, a series of in-pile experiments (the STAR experiments) is being performed in which clad motion and fu…
ChemInform Abstract: EFFICIENT SYNTHESIS OF 1,1′‐METHYLENEBIS‐1H‐PYRROLE DERIVATIVES
Abstract Unter den Bedingungen der Phasen‐Transfer‐Katalyse reagieren die Pyrrol‐Derivate (I) mit dem Lösungsmittel Methylenchlorid zu den Methylen‐bis‐pyrrolen (II).