Materials Literature
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This paper proposes a simple method for predicting the magnetic losses of electrical steel sheets. By using this method, the losses under arbitrary induction waveform with or without minor loops from the loss data only under sinusoidal excitation can be estimated.
[reaction: see text] First examples of aromatic core-modified twisted heptapyrrolic systems with six meso links have been obtained via a general [3 + 4] acid-catalyzed condensation method. Despite the twisted conformation, these heptaphyrins exhibit aromaticity in solution, unlike most of the all-aza analogues.
Nitrilases are important industrial enzymes that convert nitriles into their corresponding acids or, occasionally, amides. Atomic resolution structures of four members of the nitrilase superfamily have been determined, but these differ from microbial nitrilases in that they do not form typical large homo-oligomeric co…
The anticalin FluA is an artificial lipocalin with novelspecificity for the fluorescein group, which was engineered from an insect bilin-binding protein by targeted random mutagenesis and selection. Based on the crystal structure of FluA, an attempt was made to improve the complementarity of its ligand pocket to fluor…
Progress in the development of actuating molecular devices based on responsive polymers is reviewed. The synthesis and characterization of “grafted from” brushes and triblock copolymers is reported. The responsive nature of polyelectrolyte brushes, grown by surface initiated atomic transfer radical polymerization (ATR…
A novel thermosensitive macromolecular prodrug of 5-fluorouracil (5-FU) was synthesized using cyclotriphosphazene, and its thermosensitivity, degradability, and in vitro antitumor activity were studied. A series of alpha-substituted glycine derivatives of 5-FU containing carboxylic groups were prepared, and cyclotriph…
The effects of lattice vibration on Cu nucleation in Fe-Cu alloys have been investigated by a first-principles technique. We find that the vibrational effect is comparable $(\ensuremath{\sim}36%)$ to the configurational entropy. Lattice vibration increases the activation barrier of Cu precipitates by 0.53 eV, where th…
Abstract An encapsulation of silver nanoparticles has been developed based on a template technique. Amphiphilic double‐cylinder‐type copolymer brushes were employed as a single molecule template, utilizing the coordination of Ag + ions with carboxylate groups in the core of the brush. Subsequently, silver nanoparticle…
This article focuses on gaining a fundamental understanding of the bubble growth and collapse phenomena in a chemical blowing agent (CBA)based foaming process under atmospheric pressure. The behavior of CBA-blown bubbles exposed to various processing conditions is observed using a hot-stage optical microscope-based im…
Abstract The polymerization conditions for polystyrene and poly(methyl methacrylate) crosslinked by 0.5 mol % of the cluster Zr 6 O 4 (OH) 4 (methacrylate) 12 were optimized by applying a step polymerization procedure. The onset of thermal decomposition was thus increased up to about 50° for polystyrene and about 110°…
This work is concerned with the effect of the nanostructure on the electrical conductivity of n-type In-doped PbTe thin films. Nanostructured thin films were prepared by varying the rate of nucleation as a function of the nature and temperature of the substrates. On low-temperature substrates, the increased rate of nu…
Bi 0.5 Na 0.5 TiO 3 (BNT) bulk ceramics with a preferred <100> orientation (texture) were prepared by the reactive-templated grain growth method using platelike Bi 4 Ti 3 O 12 (BiT) particles as templates for BNT. The texture did not develop extensively in stoichiometric BNT, but the addition of excess Bi 2 O 3…
The static, dynamic, and attenuation properties of BaCoZnFe16O27 barium ferrites and their composites have been studied using microparticles and nanoparticles. The results showed that BaCoZnFe16O27 microparticles have larger saturation magnetization Ms and smaller coercivity Hc than do nanoparticles. The composites wi…
We have investigated the phonon and the magnetic excitations in ${\mathrm{LaCoO}}_{3}$ by inelastic neutron scattering measurements. The acoustic phonon dispersions show some characteristic features of the folded Brillouin zone (BZ) for the rhombohedrally distorted perovskite structure containing two chemical formula…
Therapeutic uses of a variety of drug carrier systems have significant impact on the treatment and potential cure of many chronic diseases, including cancer, diabetes, mellitus, rheumatoid arthritis, HIV infection, and drug addiction. Drug delivery technology is a multidisciplinary science involving the physical, biol…
Abstract Polymer blends based on poly(ethylene 2,6‐naphthalate) (PEN) and poly‐(ethylene terephthalate) (PET) reinforced with a thermotropic liquid crystal polymer (TLCP) were prepared using a melt blending process. Polymer blends consisting of conventional cheap polyester with a small quantity of expensive TLCP are o…
Abstract Copper is thought to be noncatalytic to carbon deposition from gas atmospheres, and owing to its extremely low solubility for carbon, inert to the metal dusting reaction. Thus, the addition of copper to nickel, which forms a near perfect solid solution, may be able to suppress or greatly retard the metal dust…
Vertical single-crystal ZnO nanowires with uniform diameter and uniform length were selectively grown on ZnO:Ga/glass templates at 600/spl deg/C by a self-catalyzed vapor-liquid-solid process without any metal catalyst. It was found that the ZnO nanowires are grown preferred oriented in the [002] direction with a smal…
Mesoporous ethane−silicas functionalized with trans -(1 R,2 R )-diaminocyclohexane were synthesized by one-step co-condensation of 1,2-bis(trimethoxysilyl)ethane and N -[(triethoxysilyl)propyl]-(−)-(1 R,2 R )-diaminocyclohexane using octadecyltrimethylammonium chloride as the template under basic conditions. For compa…
Unstable plastic flow has been observed in the parabolic stage of work hardening of a zirconium alloy, which was manifested by periodic variations of a spatiotemporal pattern of the local strain distribution. A synergistic model explaining this behavior is proposed according to which the plastic flow evolution in the…