Materials Literature
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Abstract OCTA (Open Computational Tool for Advanced material technology) is an integrated simulation system for polymeric materials developed by a joint project of industry and academia supported by Japanese government. It aims at exploring the utility of mesoscale modelings developed in polymer science. OCTA consists…
Abstract Polypyrrole films were electrochemically synthesized by direct oxidative polymerization of pyrrole in acetonitrile containing β‐naphthalene sulfonic acid or tetrabutylammonium tetrafluoroborate as an supporting electrolyte. We characterized the as‐grown polypyrrole films by resonance Raman spectroscopy in the…
Vertically aligned bamboo-like carbon nanotubes (CNTs) are successfully synthesized on Ni-coated Si (Ni/Si) substrates by hot-filament-assisted radio frequency (rf) magnetron sputtering. Transmission electron microscopy analysis reveals that a bamboo-like structure is formed inside the nanotube that has a catalytic Ni…
This paper compares the hairiness of Solospun yarns with conventional ring spun worsted yams of the same specifications. A 24-spindles worsted ring spinning frame is used to spin the Solospun and conventional ring spun yarns at the same time, and yarn hairiness is measured. The total hairiness number ( T p ), the numb…
After being thrown onto a solid substrate, very soft spherical gels bounce repeatedly. Separate rheological measurements suggest that these balls can be treated as nearly elastic. The Hertz contact deformation expected in the static (elastic) limit was observed only at very small impact velocities. For larger velociti…
The preparation by magnetron sputtering of p-type semiconducting thin films consisting of a multicomponent oxide composed of Cu oxide and Co oxide is described. The electrical, optical, and crystallographical properties of films deposited by rf magnetron sputtering using (Cu2O)1−x–(CoO)x powder targets were strongly d…
This theoretical work describes pores between fibers in general fiber assemblies. The basic idea is to treat the pores between fibers—under certain assumptions—as air fibers surrounded by fictional borders. Different pore characteristics are formulated from basic definitions of fiber assemblies. It is possible to find…
A diode-structure flat-panel luminescent lamp has been fabricated by using carbon nanotube (CNT) film as cathode. The CNT emitters were grown on silicon substrate by catalytic decomposition of acetylene. Studies of scanning electron microscopy and transmission electron microscopy show that as-grown CNTs are randomly o…
Abstract In the 2 nd order mountain brook “Oberer Seebach” (Austria), diatoms and cyanoprokaryotes dominate the microphytobenthos, with the diatoms forming the richest species group. Comparative investigations of different habitats clearly show seasonal variations in algal species composition and biomass throughout th…
The conductivity and magnetic susceptibility of disordered titanium monoxide TiO y (0.920≤ y ≤1.262) containing vacancies in titanium and oxygen sublattices are investigated. For TiO y monoxides with an oxygen content y ≤1.069, the temperature dependences of the conductivity are described by the Bloch-Grüneisen functi…
Abstract A new linear chain complex of oxo‐centered trinuclear manganese clusters, [{Mn III 2 Mn II O(O 2 CCHCl 2 ) 6 (H 2 O)}{Mn(O 2 CCHCl 2 ) 2 (H 2 O) 4 }] n ( 1 ), has been synthesized by treatment of a mixture of Mn(OAc) 2 ·4H 2 O and dichloroacetic acid in dichloromethane with KMnO 4 . In this complex chains are…
This paper is a case study examining the cause, effect, and solution of an actual "noncharacteristic" even harmonic problem in an electrochemical plant. While issues concerning "characteristic" harmonics are well documented in the literature, limited information is available describing how noncharacteristic harmonic c…
Several poly(alkoxyphosphazenes) and poly(fluoroalkoxyphosphazenes) were synthesized and allowed to react with various organic nucleophiles. Reactions were carried out at room temperature (25 °C) and at 67 °C in tetrahydrofuran (THF) and were monitored by 31 P NMR spectroscopy. The possible use of single-substituent p…
Abstract A straightforward experimental set‐up derived from the Biometer Flask previously utilized for experiments of pesticides biodegradation, has been adopted for testing the ultimate biodegradability of natural, synthetic and semi‐synthetic polymeric materials on solid substrates such as soil and mature compost. T…
Abstract A 5,7‐dioctadecylquinoxalinophenazine zwitterion 1 has been investigated to determine its thermal phase behavior. A combination of differential scanning calorimetry (DSC), variable temperature low‐ and high‐angle X‐ray diffraction (XRD), and deuterium solid‐state NMR spectroscopy were used to characterize the…
Se0.9In0.1 samples were prepared from their highly pure constituents, by ice-water quenching from the melts. Structural characterization using XRD and DTA has revealed a stable phase consisting of some crystalline clusters embedded in a glassy matrix with a single glass transition (Tg) at a temperature 320 K, an onset…
A renewed interest in thorium-based fuels has arisen lately based on the need for proliferation resistance, longer fuel cycles, higher burnup, and improved waste form characteristics. Recent studies have been directed toward homogeneously mixed, heterogeneously mixed, and seed-and-blanket thorium-uranium oxide fuel cy…
Nanocrystalline aluminum nitride powders obtained from gas condensation and in situ nitridation in a forced‐flow reactor have been sintered successfully without pressure or additives. The resulting densified pellets showed good thermal conductivity and low oxygen content. A comparison of the improvement in densificati…
PURPOSE: To determine whether combined intravenous liposomal doxorubicin and radio-frequency (RF) ablation decreases tumor growth and increases endpoint survival over those with RF or liposomal doxorubicin alone in an animal tumor model. MATERIALS AND METHODS: Subcutaneous R3230 mammary adenocarcinoma (1.1-1.4 cm) was…
Thin films of polypropylene have been irradiated with different doses of gamma radiation from a 60Co source. IR, UV-VIS spectra of this polymer before and after irradiation have been recorded and from the spectral data some modifications in the properties have been investigated. The spectra indicated that polypropylen…