Materials Literature
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Electroabsorption spectra of electron donating butyloxy- (OBu) or electron withdrawing butylsulfonyl (SO(2)Bu)-substituted tribenzotetraazachlorin (TBTAC)-C(60) conjugates (1 and 2, respectively) have demonstrated that significant change of the molecular polarizability is associated with the photoexcitation of 1 in th…
Nitrogen-added Shielded Metal Arc Welding (SMAW) electrodes of a modified E316-15 austenitic stainless steel have been developed for the welding of 316L(N) stainless steel structural components for service at 673°K?823°K. The specifications for these welding electrodes include several modifications of the AWS/ASME SFA…
Dipole moments were measured for a series of substituted benzenes, biphenyls, terphenyls, C-monoaryl- and C,C′-diaryl-p-carboranes. For the donor–bridge–acceptor systems, Me2N–X–NO2, where X is 1,4-phenylene, biphenyl-4,4′-diyl, terphenyl and 1,4-C6H4-p-CB10H10C-1,4-C6H4, the measured interaction dipole moments are 1.…
Complete set of elastic constants Cij of α-Fe single crystal have been investigated from ambient temperature up to 893 K by electromagnetic acoustic resonance. Longitudinal component of elastic constants C11 showed linear temperature behavior and the magnitude of elastic softening was approximately 13%. The remainning…
In this study, the influence of dyeing on the antibacterial efficiency of polyamide and polyester fabrics loaded with colloidal Ag nanoparticles and the influence of the presence of Ag nanoparticles on the color change of dyed fabrics were investigated. Dyes C.I. acid green 25 and C.I. disperse blue 3 were used for dy…
Shot peening is a surface treatment effective to obtain compressive residual stress on shot peened surface and to improve fatigue strength, and it is applied to automobile parts such as springs and gears. Based on recent trend for further reduction of automobile parts weight, high hardness of automobile parts will be…
Graphite plates were Ar+ ion-irradiated with and without a simultaneous Fe supply at room temperature. The surfaces ion-irradiated without an Fe supply were covered with densely distributed conical projections with a carbon nanofibre (CNF) on the top. The CNFs thus grown were 20-50 nm in diameter and 0.3-2 µm in lengt…
Several methods for automatically constructing a protein model from an electron-density map require searching for many small protein-fragment templates in the density. We propose to use the spherical-harmonic decomposition of the template and the maps density to speed this matching. Unlike other template-matching appr…
Within the ʻPropulsion 2010ʼ Memorandum of Understanding (MoU) which was signed in 2006, Astrium and DLR agreed to work jointly on Ceramic Matrix Composite (CMC) materials and related technologies with the aim to have finally within the next three years all components and subsystems available for an entirely CMC-based…
We report on a two-step method for oxidation of Pb(111) surfaces, which consists of low temperature (90K) adsorption of O 2 and subsequent annealing to room temperature. In situ scanning tunnelling microscopy observation reveals that oxidation of Pb(111) can occur effectively by this method, while direct room temperat…
Numerous μ-cyanido bridged polynuclear complexes, [M(CN)n(CNCuIIL)6−n]m+ (with M = CrIII or CoIII, n = 0–5 and L = tris(2-amino)ethylamine (tren) or N,N-dimethylethylenediamine (Me2en)), have been synthesised: [CoIII(CN)5{CNCuII(Me2en)2}]−, [CoIII(CN)4(CNCuIItren)2]+/[CoIII(CN)3(CNCuIItren)3]3+, [{CoIII(CN)6}2{CuII(Me…
The impregnation of thermoplastic polymers (polyethylene, polypropylene, polymethyl methacrylate, and polycarbonate) with photochromic compounds from the class of indoline spirooxazines in supercritical carbon dioxide (SC-CO 2 ) was studied. The concentration of the photochrome and the kinetics of decolorization of it…
To investigate the local structure of carbon black (CB) crystallites, soft X-ray absorption spectra (XAS) in the CK region of CB were measured using synchrotron radiation, and the π* peak profile in the CK-XAS was analyzed by the discrete variational (DV) Xα method. Compared to highly oriented pyrolytic graphite (HOPG…
The rearrangement reactions of energized CCCB and CCCAl have been studied by means of quantum mechanical electronic structure calculations. Potential barriers were determined at UCCSD(T)/aug-cc-pVTZ with optimized molecular geometries and harmonic vibrational frequencies determined at the UB3LYP/6-311 + G(3df) level.…
A Cellular Automaton (CA) -Finite Difference (FD) coupling model was developed to analyze the evolution of solidification microstructure and the columnar-to-equiaxed transition (CET) in Al–Si alloy. Kobayashi's microsegregation equation was adopted to describe the solute diffusion in solid phase, and a “decentred squa…
Synchrotron X-ray microtomography has been utilized for the ex-situ observation of micro-pore growth/annihilation behaviors of a 2024 aluminum alloy at a high temperature. High-resolution experimental configurations have enabled the 3D reconstruction of micro-pore and intermetallic compound particle images with isotro…
A new porphyrintetrathiafulvalene composite, where two porphyrins are bridged by te trathiafulvalene (TTF) using acetylene bonds was synthesized. The Q-band of the monomeric porphyrin appears at 590 nm whereas that of the composite is red-shifted to 620 nm and intensified. The Soret band is also red-shifted from 427 n…
Chronic exposure to low levels of mold has been reported to increase susceptibility to respiratory infections. In the current study, the authors investigate the lungs' ability to clear an infection after repeated low-dose zymosan exposure. Exposure was conducted at a zymosan dose of 0.6 mg/kg body weight (bw) of rat,…
Abstract—In this paper, photonic bandgaps (PBGs) of the quasiperiodic structures is calculated using the Fourier transform of the refractive index profile. Comparing the reflectivity and Fourier spectrum of multilayer structure refractive index, we find that a peak in the Fourier spectrum is equivalent to a sinusoidal…
A recently reported promising cathode material for solid-oxide fuel cells ͑SOFCs͒, namely, Ba x Sr 1-x Co y Fe 1-y O 3-␦ ͑BSCF͒ is fabricated in nanocrystalline form by a chemical alloying approach.The approach is comprised of solution chemical synthesis of a precursor and its thermochemical processing toward the desi…