Materials Literature
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It is known that evolution may lead to a new species while adaptation may lead to a new variety. In this manuscript, we present an analysis of the number of evolutions (defined by improvement of the score associated with an objective function of a genetic algorithm) in an experiment supervised by a genetic algorithm,…
Molecular dynamics simulations are used to investigate strain localization in a model nanocrystalline metal. The atomic mechanisms of such catastrophic failure are first studied for two grain sizes of interest. Detailed analysis shows that the formation of a strain path across the sample width is crucial and can be ac…
A definition of the direct correlation function (DCF) is applied to monatomic fluids modeled by spherical particles with a pair potential given by a hard-core repulsion and a Yukawa attractive tail. This potential allows one to take advantage of the known analytical properties of the solution to the Ornstein–Zernike (…
The behaviours of bulk phonons propagating in triglycine-zinc chloride (Gly3-ZnCl2) single crystal for different polarizations of the incident and scattered beams were studied by Brillouin spectroscopy. All components of the elastic and elasto-optical tensors were determined at room temperature. Dependences of the vel…
A general introduction to environmental catalysis using supported gold and gold bimetallic alloy nanoparticles is presented. The general concepts of environmental catalysts are discussed and then two examples are described in more detail. The possibility of using sustainable feedstocks for the generation of chemicals…
Fibrillation can be induced in proteins by altering solvent conditions. Stabilization of the protofibrillar structure arrests formation of longer fibers. Thermal stability and fibrillation of N-terminal domain of the hydrogenase maturation factor (HypF-N) were studied in the presence of a series of metal ions. Only Al…
The kinetics and dynamics of post-yield fracture behavior of polyamide-6 (PA-6)/polypropylene-grafted-maleic anhydride (PP-g-MA)/clay nanocomposites are comprehensively evaluated. To ascertain the nature of crack growth from kinetic aspects, time-synchronized deformation data prior to failure are acquired as images at…
The antiferromagnetic layer thickness dependence of the coercivity of the ferromagnetic/antiferromagnetic two‐phase system was studied. With mathematical transformations, equivalent anisotropy field and equivalent external field were obtained analytically. In this way, the two‐phase system was transformed into a singl…
Abstract Since British Nuclear Fuels plc (BNFL) was formed in 1971 its transport service has safely moved spent light water reactor (LWR) fuel from many locations abroad to its fuel handling plants at Sellafield in the UK. To support this business a number of types of flasks have been designed and used. One of the typ…
The design testing of packages for radioactive materials considers normal operating conditions and accident con- ditions. A mechanical test, especially under accident conditions, must include the safety assessment of possibly undetected material defects. BAM has developed improved assessment methods, using fracture me…
Biomolecule-ion interactions that occur during changes in pH value are a crucial but poorly investigated area that underlies the aggregation of inorganic nanocrystals. Meanwhile, the disorderly growth of calcium phosphate (CaP) nanocrystals is an obstacle that limits its practical applications. Herein, we have demonst…
Abstract The cage compounds [E2{(SiMe2)2O}3] for E = P, As, Sb, and Bi (1, 4, 5, and 6, respectively) are readily accessible in moderate yields by the reaction of Na3E (for E = P, As, Sb, Bi) or [Li(dme)EH2] (for E = P, As; dme = dimethoxyethane) with 1,3‐dichloro‐1,1,3,3‐tetramethyldisiloxane. These compounds were is…
We present a theoretical study of the structural and electronic properties of the M-doped MgIn2S4 ternary spinel semiconductor with M = V, Cr, and Mn. All substitutions, in the normal and in the inverse structure, are analyzed. Some of these possible substitutions present intermediate-band states in the band gap with…
Die Bindungsenergien von O2 und CO an Eisen(II)- und Mangan(II)-Porphyrin-Anionen in der Gasphase wurden bestimmt. Die Ionen-Molekül-Gleichgewichte bei niedrigen Drücken wurden in einer gekühlten Falle eines FT-ICR-Massenspektrometers gemessen. Für die Häm-analogen Eisen(II)-Porphyrin-Komplexe wurden Bindungsenergien…
We propose a pseudopotential model of the Landau free energy. A novel symmetry rule is manifested in the microscopic description of the model. Followed by ab initio calculations, a method of analyzing the mechanism of a weakly first-order phase transition is established. The model is applied to the pre-\(\omega\) phas…
Purpose This paper aims to review the research status of fatigue behavior and fracture mechanism for C/C composites. Design/methodology/approach The fatigue behavior is related to many factors. The mechanical and physical properties were compared to evaluate the effect of fatigue under various experimental conditions,…
The reaction of 2,5‐diiodo‐1,4‐benzenedicarbonyl chloride, C6H2I2(COCl)2‐p, with 4‐hydroxy‐2,2,6,6‐tetramethyl‐1‐piperidinyloxy (TEMPO‐ol) gave I–Ph(COO–TEMPO)2–I, Monomer‐1. Pd‐catalyzed polycondensation of Monomer‐1 with Me3Sn‐Th‐SnMe3 (2,5‐bis(trimethylstannyl)thiophene) and Bu3Sn–CH = CH–SnBu3 (1,2‐bis‐(tributylst…
Abstract Corona inception voltage due to a water droplet on epoxy resin in an electrode gap is high under DC voltage compared to AC voltage. It is observed that, as the contact angle of the epoxy nanocomposite material becomes higher, the corona discharge inception voltage increases. The droplet movement is observed,…
Gamma-ray spectroscopic measurements of low-level environmental samples require the reduction of the background as low as practicable. In the present work, we investigate the advantages of adding Hg passive shielding inside a low-background Pb-shield to further reduce the background radiation. The background count rat…
We have studied the effect of head group and alkyl chain length on β-phase formation in poly(9,9-dioctylfluorene) (PFO) solubilized in phospholipid liposomes. Systems studied have three different alkyl chain lengths (1,2-dimyristoyl-sn-glycero-3-phosphatidylcholine [DMPC], 1,2-didodecanoyl-sn-glycero-3-phosphatidylcho…