Materials Literature
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The role of alloying elements and the effect of prior cold work on microstructural evolution in Supral type alloys during high temperature straining has been investigated by examining a range of binary and ternary alloys containing varying amounts of Cu and/or Zr. After hot compression, specimens were rapidly cooled t…
Silver black was deposited on SiO 2 /Si substrates by thermal evaporation under various gas atmospheres (Ar and N 2 ). The dependence of surface morphology evolution of silver-black coating on deposition parameters was studied. The metal-black layers obtained by evaporation are reproducible. With an increase of deposi…
Abstract We have prepared a novel water-soluble silver(I) complex showing effective antibacterial activities K12[Ag8(mba)10]·12H2O (1a, H2mba = 2-mercaptobenzoic acid) from the Ag2O : H2mba : KOH = 1 : 4 : 8 molar ratio reaction in aqueous media and determined its crystal structure. The X-ray crystallography revealed…
Carbon-chain heterofunctional oligoperoxides (HFOs) with ditertiary peroxidic, carboxy, or hydroxy groups formed stable coordinated complexes through their interaction with transition-metal salts in organic solutions. The oligomeric metal complexes (OMCs) were separated from the reaction mixture and investigated throu…
The exchange mechanism of proton and hole in protonic conductor CaZrO 3 has been investigated by photoemission spectroscopy. The Fermi level is higher by about 1.0 eV through proton doping, indicating that protons exchange with holes. The defect chemical calculation proves that the change of the number of the protons,…
Transmission electron microscopy (TEM) and Cryo-TEM were used to study the growth kinetics of poly(3-hydroxybutyrate) granules produced by in vitro polymerization. The in vitro formation of poly(3-hydroxybutyrate) uses a recombinant form of the PHA synthase to polymerize [R]-(–)-3-hydroxybutyryl-CoA. Since the in vitr…
Abstract KCl-, KBr-, and KI-kaolinite intercalation complexes were synthesized by gradually heating potassium-halide discs of the dimethylsulfoxide (DMSO)-kaolinite intermediate at temperatures to 330°C. Two types of complexes were identified by infrared spectroscopy: almost non-hydrous, obtained during thermal treatm…
N-Vinylformamide (VFA), the simplest member of the enamide group, is the key compound in the synthesis of linear cationic polymers with primary amino groups. In recent decades VFA has been the object of intensive research activity in industry and in universities with the aim of developing an economic method of synthes…
A new polidentade ligand, N-(2-hydroxybenzyl)-N-(2-pyridylmethyl) [(3-chloro)(2-hydroxy)]propylamine (H2BPClNOL), was synthesized and two Fe2III complexes containing the FeIII(m-alcoxo)2FeIII core were structurally and magnetically characterized. Complex [Fe2(BPClNOL)2(OAc)]ClO4 (1) differs from complex [Fe2(BPClNOL)2…
The influence of a continuous sound field on the first oscillation cycle and on the cavitation luminescence of a transient laser-induced bubble is investigated experimentally. The variation of the collapse phase is predicted with a simple numerical model and compared with experiment. Bubble dynamics is mainly influenc…
We present a novel algorithm for generating polymer entanglement networks and apply it to polypropylene/polyamide interfaces strengthened with graft copolymers. Our guides for the generation of the polymer network are the configurational distribution functions derived from a self-consistent mean-field lattice theory o…
Analytical formulae for all Laue groups are derived, giving the dependence of the residual elastic strain measured by X-ray and neutron diffraction on the direction in the sample and on the Miller indices. These formulae are valid for isotropic polycrystals in the limits of the Reuss and Voigt approximations and are a…
Six polyamideimides (PAI) were synthesized from six dianhydride monomers containing amide functions. The dianhydride monomers were obtained from the reaction of trimellitic anhydride chloride with six aromatic diamines—1,4-phenylenediamine, 2,2-bis(4-aminophenyl) propane, 4,4′-oxydianiline, 4,4′-methylenedianiline, 1,…
Phase stability and effects of sintering atmosphere on the crystalline structure of Np‐doped yttria‐stabilized zirconia (YSZ) were evaluated in comparison with those same properties and conditions for Ce‐doped YSZ. Different sintering atmospheres for Ce‐doped YSZ led to differences in phase formation through reduction…
The optical properties of Ag-TiO2 nanocermet thin films are studied with the aim of optical filtering applications. Beyond the classical properties of cermets with noble metal inclusions predicted by the effective medium theories, the optical properties of Ag-TiO2 nanocermets deposited by R.F. co-sputtering are govern…
The title compound, β-tetrakis(2,3,4,5,6-pentaphenylbenzene) phthalocyanine, was prepared by cyclotetramerization of 4-(2,3,4,5,6-pentaphenylbenzene)phthalonitrile, in the presence of hydroquinone. The phthalonitrile derivative was synthesized by a Diels−Alder reaction between 4-(phenylethynyl)phthalonitrile and tetra…
OBJECTIVE: A study was performed to evaluate the use of native fluorescence imaging to detect in situ molecular changes. SUMMARY BACKGROUND DATA: There is no ideal noninvasive method to monitor molecular changes in a local region at a laser weld joint without removing a section of tissue for histological examination.…
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Thermogravimetric analyses (TGAs) of SiC–SiO2 powder mixtures have been carried out at temperatures ranging from 1400 to 1700 °C under an atmospheric pressure of Ar (104 kPa). Correlation with thermodynamic calculations allows us to suggest a reaction path leading to the generation of gaseous silicon oxide [SiO(g)]. T…
High quality NiO x thin films have been prepared by the sol–gel technique following alternative routes to the classic metal alkoxide route. Using nickel (II) diacetate as precursor reagent, a nickel complex was deposited on glass substrates. The nickel complex transforms to NiO x after a heat treatment in air above 25…