Materials Literature
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Abstract Tetrakis(diethyl phosphonate), Tetrakis(ethyl phenylphosphinate)‐, and Tetrakis(diphenylphosphine oxide)‐Substituted Phthalocyanines The title compounds 7, 9 , and 11 are obtained by tetramerization of diethyl (3,4‐dicyanophenyl)phosphonate ( 5 ), ethyl (3,4‐dicyanophenyl)phenylphosphinate ( 8 ), and 4‐(diphe…
Abstract We investigate the self‐organization of PSS in brushes and polyelectrolyte multilayers with X‐ray, neutron and optical reflectivity. The electrostatic force dominates brush phases and adsorption behavior, additionally we find evidence of a strong hydrophobic force: (ι) within amphiphilic diblock copolymer mon…
The metastable crystal structure of strontium‐ and magnesium‐substituted LaGaO 3 (LSGM) was studied at room and intermediate temperatures using powder X‐ray diffractometry and Rietveld refinement analysis. With increased strontium and magnesium content, phase transitions were found to occur from orthorhombic (space gr…
The axial neutron emission and gamma ray source distribution were measured for LWR high burn-up UO2 and MOX spent fuel rods. The gamma rays of 134Cs, 137Cs and 106Ru were measured on the fuel rods, and consequently compared with the results of the ORIGEN2/82 calculation, in which both the original library and ORLIBJ32…
Abstract X-ray basal reflections of several HDTMA-vermiculites show that when these contain co-adsorbed molecules of HDTMA-Br, their interlayer spacings are ∼29.5 Å. After HDTMA-Br has been leached out with ethanol, spacings decrease to ∼26 Å, but when exposed to toluene vapor the spacings increase to ∼36 Å, and to ∼4…
We report the formation of aggregated thionine molecules encapsulated within an Al-containing mesoporous molecular sieve material (specifically, AlMCM-48) that possesses a cubic pore structure. XRD, UV−vis absorption, fluorescence, and Raman measurements were used, where appropriate, as spectroscopic tools to characte…
Collagen from different sources was isolated and designed as scaffolds to act as a three-dimensional substrate for culturing human skin fibroblasts, which can be used as dermal substitutes. The thermodynamic behavior of the scaffolds developed was analyzed through Differential Scanning Calorimetric (DSC) and Thermogra…
Abstract Summary: Styrene‐butyl acrylate copolymer (St‐BA)/graphite oxide (GO) nanocomposites and St‐BA/GO/MPP [melamine poly(metaphosphate)] composites were prepared via an intercalation process by the ball‐milling method and characterized by X‐ray diffraction (XRD), transmission electron microscopy (TEM), and field…
The amino acid sequences of gamma-crystallin, Haloalkane Dehalogenase, Phthalate Dioxygenase, Porphobilinogen Deaminase and Myosin Regulatory Domain c-chain were analyzed for their information content. Sites of increased degree of information coordination between residues (IDIC-sites) were identified, and their organi…
We review distinct photonic/electronic properties originating from built‐in nanostructures in transparent oxide‐based materials, emphasizing potential of nanostructures hidden in crystal structure. Materials focused on are oxychalcogenides LaCuOCh (Ch = chalcogen ion) and homologous oxides InGaO 3 (ZnO) m (m = integer…
Abstract Summary: In a low‐molecular‐weight polyethylene‐ block ‐poly(ethylene oxide) (PE‐ b ‐PEO) diblock copolymer, two pathway‐dependent melting processes were observed: Upon slow heating, the PE lamellar crystals melted at ≈97 °C into a disordered state. However, when the temperature rapidly jumped to above the me…
A new type of ferroelectric gate field effect transistor (FET) using ferroelectric-insulator interface conduction has been proposed. Drain current flows along the interface between the ferroelectric and insulator layers and needs no semiconductor. The FET has been fabricated by forming drain and source electrodes on a…
The new processes of current flow through electrodes at carbon nanotube (CNT)-electrode junctions were carried out to change the contact resistance of CNT conductors and the tunnel barriers of CNT quantum dots. When the current flow process was applied to CNT conductors with the Au/Ti electrodes deposited on multiwall…
To identify the genes involved in pyridoxine synthesis in yeast, auxotrophic mutants were prepared. After transformation with a yeast genomic library, a transformant (A22t1) was obtained from one of the auxotrophs, A22, which lost the pyridoxine auxotrophy. From an analysis of the plasmid harboured in A22t1, the RKI1…
The dielectric properties of Na 0.5 Bi 0.5 TiO 3 (NBT) ‐based composites incorporating silver particles prepared by sintering at a low temperature of ∼900°C are reported. The dielectric constant increases with the amount of metal silver particles in the measured frequency range (150 Hz to 1 MHz), and could be enhanced…
Investigates the influence of various additives on the dispersion and setting behavior of ultralow cement content (ULC) refractory castables in the U.S. Reason for the evaluation of ULC refractory castables; Essential to improve properties at high temperature through the formation of needlelike mullite grains; Use to…
Ceramic samples of the melilite‐type La 1+ x Sr 1– x Ga 3 O 7–δ ( x =−0.15 to 0.60) compound were prepared by conventional ceramic processing. Sintering characteristics and microstructural evolution were studied. A phase diagram study was performed to establish the solid solubility limits as a function of the La:Sr ra…
Concentrated sugar solutions are prototypical glass formers with a wide application in food technology and cyropreservation, but the microscopic mechanisms underlying these processes remain obscure. To uncover these microscopic details, we study the structure and dynamics of binary glucose−water mixtures by means of a…
Abstract Compatibilized polypropylene/polyamide 6 blends were prepared with polypropylene, ε‐caprolactam and maleic anhydride grafted polypropylene via in situ polymerization and in situ compatibilization in a batch mixer. Scanning electron microscopy and differential scanning calorimetric analysis showed that the com…
The phase diagram of the CaO–Al 2 O 3 –SiO 2 –CaSO 4 –CaCO 3 –H 2 O system relevant to cement has been calculated at 25°C and 1 bar pressure. It is composed of 331 stable phase assemblages in equilibrium with the aqueous phase and contains 30 invariant points with 15 solids. Thaumasite appears to be a stable phase wit…