Materials Literature
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In order to investigate the co-firing feasibility of a double-layer ceria-zirconia electrolyte for low-temperature Solid Oxide Fuel Cells (SOFCs), interdiffusion phenomena between yttria-stabilized zirconia (YSZ) and cerium-gadolinium oxide (CGO) were studied in the temperature range 1200°C to 1500°C with the aid of S…
In situ development of La‐ß‐Al 2 O 3 (LBA) platelets in alpha‐Al 2 O 3 was studied as a function of the preparation method: a conventional solid‐state reaction of commercial Al 2 O 3 powder and La(NO 3 ) 3 as well as a sol‐gel method starting with boehmite and the same La 2 O 3 precursor. In both cases, homogeneous di…
Abstract Polypropylene(PP) and polyamide6(PA6) were extruded with a single screw extruder. It was found that when PA6 was in the dispersed phase, it could deform and fibrillate in the PP matrix in the shear force field generated by the rotating screw. Dynamic mechanical analysis and mechanical tests showed that the me…
The first synthesis of chitin derivatives with well-defined block copolymer side chains, i. e., chitin-graft-[poly(2-methyl-2-oxazoline)-block-poly(2-phenyl-2-oxazoline)] (5), chitin-graft-[poly(2-methyl-2-oxazoline)-block-poly(2-butyl-2-oxazoline)] (6), and chitin-graft-[poly(2-methyl-2-oxazoline)-block-poly(2-tert-b…
The problem of the relation between the phase function and the thin microrelief profile of diffractive optical elements is considered in detail through the nonparaxial scalar diffraction theory for the case of a curved substrate surface and an astigmatic incident beam. Local-plane-wave expansions are used to calculate…
A number of semiflexible liquid-crystalline polyazomethines have been synthesized by condensation of two dialdehyde monomers (1,10-bis[(4-formyl-3-hydroxyphenyl)oxy]decane or 1,10-bis[(4-formylphenyl)oxy]decane) with two diamines (2-methyl-1,4-phenylenediamine or 3,3‘-dimethoxybenzidine). Polyazomethines having a hydr…
The results of an experimental investigation of the temperature dependences of the magnetic susceptibility and resistivity in the shape-memory ferromagnetic alloys Ni2+x Mn1−x Ga (x=0–0.20) are reported. A T−x phase diagram is constructed on the basis of these data. It is shown that partial substitution of Ni for Mn c…
Abstract The molecular structure of a polypropylene (PP) blend, of the type referred to commercially as “impact polypropylene copolymer” (IPC), was studied and a procedure to determine its main component composition developed. The constituent species of the whole IPC, PP and ethylene‐propylene copolymers (EPC), were s…
Using a wedge-type cubic-anvil high-pressure apparatus, equiatomic Ru compounds HfRuP and ZrRuX (X = P, As, Si or Ge) with layered structures have been prepared at high temperatures and high pressures. The super-conducting transition teinperatures T c of these compounds were 12 K for HfRuP, 13 K for ZrRuP, 11.5K for Z…
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…