Materials Literature
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Abstract The structure of Cs 3 Bi 2 I 9 has been refined to R = 0.0165 on the basis of X-ray diffraction measurements at T = 290 K (STOE IPDS diffractometer; Mo K α -radiation; 296 nonequivalent reflection with I > 2 σ ( I )). The absorption correction was accounted for by the Gaussian method. The parameters of the…
Based on light and electron microscopical investigations, a new genus Craspedostauros is described for a group of marine biraphid diatoms previously placed in Stauroneis Ehrenberg. The genus Stauronella Mereschkowsky had been erected for one of these species, Amphiprora constricta sensu W. Smith, but Mereschkowsky's n…
Potentiodynamic and potentiostatic polarization techniques were used to investigate pitting corrosion of the solution-annealed duplex stainless steels (DSS) UNS S31500 and UNS S32404. Tests were performed in naturally aerated 3.5% sodium chloride (NaCl) aqueous solution at 23°C ± 2°C. With the potentiodynamic test, it…
Pyroelectricity was probably first observed by the Greeks more than 23 centuries ago. The philosopher Theophrastus wrote that lyngourion, probably the mineral tourmaline, had the property of attracting straws and bits of wood. For 2000 years, the peculiar properties of tourmaline were more a part of mythology than of…
We report a spectroscopic hyperfine structure study of the YbF174 molecule in the excited states A 2Π1/2(v=0), A 2Π1/2(v=1), and [18.6]0.5(v=0). The fluorine hyperfine interaction constant A∥ in each state is, respectively, −1.6±2 MHz, 48.8±3 MHz, and 63.3±3 MHz. The corresponding values of A⊥ are 4.6±1 MHz, −24.7±1 M…
The apparent solution dipole moments of compounds based on 4,4-di-substituted phenyl benzoate (ROC6H4COOC6H4X), I, where X is a cyano group and R a terminal linear alkyl chain ranging from C12 to C20, were determined in cyclohexane at 30 C. The compounds were also thermally characterized by polarized light microscopy…
The electrochemical behavior and surface chemistry of anodic silicon etching in nonaqueous electrolytes was studied. Etching of single‐crystal p‐type and n‐type (100) silicon was carried out in acetonitrile and propylene carbonate with hydrofluoric acid (HF) or tetrafluoroborate ( BF 4 − ) providing fluoride to comple…
A new iron(II) compound with the formula [Fe2(L)5(NCS)4]2[Fe(L)2(NCS)2(H2O)2] (I) [where L = 4-(p-tolyl)-1,2,4-triazole] has been synthesized and subjected to X-ray structure determination. Compound I crystallizes in the triclinic space group P–1 (no. 2) with a = 14.5785(11), b = 16.1253(11), c = 16.1963(8) Å, α = 80.…
Photostimulated association and dissociation of anti-dinitrophenyl antibody, anti-DNP-Ab, to and from a dinitrospiropyran photoisomerizable monolayer is probed by surface plasmon resonance (SPR). The anti-DNP-Ab binds to a dinitrospiropyran antigen monolayer, whereas the DNP-Ab dissociates from the protonated dinitrom…
Abstract Superspace group symmetry is used to parameterize the compositional and displacive degrees of freedom associated with the complex, three-dimensional incommensurately modulated (1 − x )Bi 2 O 3 · x Nb 2 O 5 , 0.06 < x < 0.23, type II solid solution. The metal and oxygen ion Atomic Modulation Functions ar…
Get PDF Email Share Share with Facebook Tweet This Post on reddit Share with LinkedIn Add to CiteULike Add to Mendeley Add to BibSonomy Get Citation Copy Citation Text V. Yu. Zerov, Yu. V. Kulikov, V. N. Leonov, V. G. Malyarov, I. A. Khrebtov, and I. I. Shaganov, "Features of the operation of a bolometer based on a va…
Abstract Aqueous solutions of pectin, an acidic polysaccharide which occurs in various natural products, was cast into clear films. While the films were flexible enough to be used as wrapping materials, their strength and resistance to water were inferior to presently used commercial films. However, precast films imme…
New observations of the structure of nematic droplets containing material with a low K33/K11 ratio indicate that these droplets adopt a twisted bipolar, rather than concentric, orientation. The data supporting this new interpretation are presented and discussed. These data provide verification for a prediction of Will…
Localized structures named "fingers" form in the vicinity of the unwinding transition of a cholesteric liquid crystal subjected to an electric field and to homeotropic boundary conditions. Several types of fingers exist, with different static and dynamic properties. For instance, cholesteric fingers of the second spec…
Using the new self-consistent, full multiple scattering FEFF8x code we calculate the XANES of the L~,3 edges of Cu, Co, Ni, and other 3d-transition metals, ignoring many body effects other than extrinsic losses. To test the final state rule, we calculate the density of states and XANES with and without core hole. Rema…
In this study we used x-ray photoelectron spectroscopy (XPS) to characterize newly synthesized platinum/zinc-porphyrin assemblies. Our investigation provides information both on the electronic structure and on the composition and conformation of the linked systems. In particular, the N 1s and Pt 4f7/2,5/2 spectra reve…
The hyperbranched polyester based on 4,4-bis-(4′-hydroxyphenyl)pentanoic acid was synthesized with different DP's. A complete 1H and 13C NMR assignment of the oligomers was carried out. Six different structural units were quantified by NMR analysis. The conversion dependence of the content of these structural units an…
Bismuth sodium titanate, (Bi1/2Na1/2)TiO3 (BNT)-based solid solution, a(Bi1/2Nal/2)TiO3-bBaTiO3-cBiFeO3, [BNBTF(100a/100b/100c)], was studied for its dielectric, ferroelectric and piezoelectric properties, as a new group of lead-free piezoelectric ceramics. Curie temperatures, Tc . of the BNBTF ceramics shift to the h…
Abstract In this paper, the thermal contact comfort of a suddenly wetted shirt and some selected mechanical parameters of ten various woven shirt fabrics were measured with the aim of determining the effect of their composition on their complex quality level. In order to explain the thermal contact comfort of superfic…
The theory of moiré fringes on X-ray diffraction topographs of bicrystals is derived from the dynamical theory of X-ray diffraction for the reflection (Bragg) and the transmission (Laue) case. The influence on the moiré fringes of the diffraction geometry, of the geometry of the sample, of its optical properties and o…