Materials Literature
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The impact of irradiation damage accumulated in fuel claddings on their mechanical behavior and their susceptibility to iodine-induced stress corrosion cracking (I-SCC) was studied in irradiated zirconium and standard Zircaloy-4 sheets subjected to interrupted tension tests in methanol/iodine solutions and in an inert…
The present study involves nitrogen NMR-NQR measurements and semiempirical as well as ab initio calculations at the different levels in three 2-nitro-5-methylimidazole derivatives. The NMR-NQR data were compared with the results of the quantum chemical calculations with the geometry optimization by seven semiempirical…
The fine structure of the methylene rocking bands obtained by high resolution and cryogenic FTIR spectroscopy was utilized to characterize the crystalline behavior of polyethylene (PE) segments in an ethylene–acrylic acid copolymers. The hydrogen bonds among the carboxyl groups play a cross-linking role and prevent th…
To evaluate the effects of on the performance of molten carbonate fuel cells, bench‐scale cell tests were performed and the meniscus heights of the electrolyte on Ni were measured with fuel gases containing various amounts of . In bench‐scale cell tests, in the fuel gas had a large effect on cell voltage in the early…
Translucent barium titanate (BaTiO3) ceramics with a relative sintered density of 85% have been successfully produced via a powderless sol–gel method, in which transparent, partially-crystallized BaTiO3 monolithic xerogels (dried gels) were prepared and submitted to sintering at 1100 °C in an oxygen atmosphere. The tr…
The tensile and impact behavior and microstructures of neutron-irradiated Fe–9Cr alloys with purity levels of 99.99 and 99.8 mass% have been examined. The neutron irradiation was mainly performed at about 255°C or 290°C to 0.3 dpa in the JRR-3M (Modified Japan Research Reactor-3). The increment of yield strengths in t…
We have attempted to investigate the non-linear behaviour in the characteristics of organic electroluminescent devices (OELDs) fabricated with polyimide and an organometallic complex as a hole transport layer (HTL) and an emission layer, respectively. The thickness of the polyimide HTL and the kind of metal cathode we…
Density functional and post–Hartree–Fock calculations have been carried out for the metal–π conjugated complexes involving pyrimidine as an m-phenylene-type unit. Total energies for the lowest and highest spin states are used for investigation of d–π–d magnetic interactions via pyrimidine of Mn(II)2–pyrimidine, Cu(II)…
AbstractCorrosion inhibition efficiencies of triazole derivatives for 70–30 brass in water containing 3%NaCl have been evaluated by means of weight loss, electrochemical polarisation, and impedance techniques. The triazole derivatives, namely aminomethyl mercaptotriazole (AMMT), aminoethyl mercaptotriazole (AEMT), and…
Four ‘gemini’-type cholesterol-based gelators 1nnn were synthesized. They acted as versatile gelators of organic fluids. The xerogels showed a lamellar structure for 1222 and 1444 and a fiber structure for 133 and 155 according to whether the number of methylene units between the two nitrogens was even or odd. The dif…
By including an external electric field in first-principles electronic structure calculations we are able to explore a variety of properties of atomic clusters. In this paper we briefly discuss the technique and present several recent examples of its use, including the polarizabilities of Si clusters, the IR spectra o…
The overpotential of Ni/yttria‐stabilized zirconia cermet anodes used in H 2 ‐ H 2 O solid oxide fuel cells (SOFCs) was studied. We measured the current‐density dependence of the anodic overpotential at 85°C operating temperature using the inlet fuel gases with compositions of 100 % H 2 , 80 % H 2 + 20 % H 2 O , and 2…
The structural, spectroscopic, and magnetochemical characteristics of a new hexanuclear iron-oxo complex are reported. [Fe6O3(O2CMe)9(OEt)2(bpy)2]ClO4·¼EtOH·¼H2O (3·¼EtOH·¼H2O) crystallizes in the triclinic space group P with a = 11.524(1) Å, b = 15.865(2) Å, c = 17.029(2) Å, α = 65.92(1)°, β = 81.49(1)°, γ = 76.40(1)…
An experimental study was carried out to determine the rate and extent of scale formation of gypsum (calcium sulphate dihydrate) on stainless steel surfaces in a continuous hydrometallurgical sulphuric acid-calcium carbonate partial neutralization reactor. The purpose of the study was to determine the effects of pH, t…
室内培養実験の結果, Coscinodiscus wailesiiは広範囲の温度, 塩分条件で増殖が可能であり, 増殖速度は, 温度20∿25℃, 塩分20∿30の範囲で高い値を示し, 最大値は供試株4株の平均値で1.02 divisions d-1であった。播磨灘における塩分の変動範囲では, 本種は高い増殖速度を維持できると考えられた。また, 本種の増殖速度が高い値を示す温度の範囲は, 本種の秋季の増殖ピークである10,11月の現場海域の水温とよく一致した。しかし本種の増殖速度は, 5∿10℃の範囲で最大値の1/2以下に低下することから, 水温が10℃以下に低下する2∿3月には, 水温が増殖の制限…
In this study, the viscoelastic and morphological properties of molded foams were investigated to determine the influence of the presence or absence of reinforcing particulate copolymer polyols (CPP). The molded foams were based on toluene diisocyanate (TDI) and glycerol-initiated ethylene-oxide endcapped polypropylen…
Abstract An overview is given of transport reactions and corrosion phenomena in metal halide gas discharge lamps filled with a mixture of alkali halides with scandium or rare-earth iodides. The phenomena that are discussed are: (a) pressures of light-emitting species above the molten salt mixture, (b) interaction of t…
Polystyrene core nanosphere particles possessing 2-methacryloyloxyethyl phosphorylcholine (MPC) polymers on the corona were prepared by the free radical polymerization of hydrophilic polyMPC macromonomer and hydrophobic styrene with AIBN as a radical initiator in ethanol as a polar solvent. The morphology of the nanos…
The structures of three heptanuclear cobalt cages supported by carboxylates and 6-chloro-2-pyridonate (chp) have been determined. The metal cores can be derived from a square-based pyramid, capped on one edge of the square base and on the neighbouring triangular face of the pyramid. Use of phthalate in a similar react…
The isothermal crystallization behavior and melting characteristics of pure polypropylene (PP) and PPs nucleated with a phosphate nucleating agent (A) and a sorbitol derivative (D) have been studied by differential scanning calorimetry (DSC). Compared with pure PP, nucleated PPs show a shorter half-times of crystalliz…