Materials Literature
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Surveys for dictyostelid cellular slime moulds (dictyostelids) carried out in various areas of Mexico over the past half century have yielded considerable data on the distribution of these organisms in one region of the Neotropics. The species recovered in these surveys include several forms later described as new to…
The fluid transport characteristics and level fluctuations in the pool of twin roll strip casting were studied by physical simulation. The level profile depends on the transport characteristics of the flow in the pool. A 1∶1 water model of a twin roll strip caster was constructed based on the Froude number and Reynold…
In this note we concentrate on iterative solution of the linear algebraic systems resulting from the finite-difference discretization of 3D forward mCSEM simulation. We review and test a recently developed multigrid preconditioner to an iterative solver and introduce some changes into the smoothing scheme of the multi…
We have studied the internal magnetic order of 3-nm (Fe0.69Co0.31)0.6B0.4 amorphous nanoparticles. These nanoparticles were dispersed in a non-magnetic matrix (non-interacting nanoparticles) to contrast them with the powder samples, where strong interparticle interactions are present. In similar fashion to the bulk al…
ABSTRACT Investigations on the effect of direction of voltage sweeps, on the current density–voltage (J–V) characteristics in polymer bulk‐heterojunction solar cells, based on the blend of poly(3‐hexylthiophene) (P3HT) and phenyl [6,6] C61 butyric acid methyl ester (PCBM), are reported with time. On the freshly prepar…
Recent work on the growth of complex oxides in salt fluxes is reviewed. Single crystals of Cs0.33MoO3, CsFe(MoO4)2 and the new phase, Cs2Mo0.65O0.21Cl5.44, have been grown from the reaction of metal oxides Fe2O3, MoO3 and molybdenum powder in a eutectic CsCl/NaCl flux. Cs0.33MoO3 is one of the known molybdenum bronzes…
BACKGROUND: Like all mammalian cells, normal adult chondrocytes have a limited replicative life span, which decreases with age. To facilitate the therapeutic use of chondrocytes from older donors, a method is needed to prolong their life span. METHODS: We transfected chondrocytes with hTERT or GRP78 and cultured them…
A recent description of diffusion-limited nucleation based on fluctuating hydrodynamics that extends classical nucleation theory predicts a very non-classical two-step scenario whereby nucleation is most likely to occur in spatially extended, low-amplitude density fluctuations. In this paper, it is shown how the forma…
Resistive memory devices fabricated from oxygen implanted tantalum exhibited bipolar switching without a forming voltage. The influence of the current limit during SET on the switching properties has been studied using endurance measurements. The SET/RESET voltages did not change with the current limit. The RESET curr…
This chapter contains sections titled: Abstract Introduction Experimental Results and Discussion Summary and Conclusions Acknowledgements
We present a theoretical calculation of magnetoresistance (MR) by including the hyperfine interaction to explain the recently discovered magnetoresistance effect in non-magnetic organic semiconductor devices. A good agreement between the theoretical results and the experimental data has been obtained. It is found that…
The linear and non-linear optical properties of different geometrical structures of gallium phosphide (GaP) nanowires have been studied by employing ab initio method. We have calculated the optical response of four different GaP nanowires, viz., two atom linear wire, two atom zigzag wire, four atom square wire and six…
Using a combination of Rietveld and reverse Monte Carlo (RMC) refinement of neutron total scattering data, we find that the 10 K structure of zinc(II) isonicotinate shows strong evidence of static disorder. This disorder takes the form of transverse displacements of the isonicotinate ligand and results in elongated at…
In this study, the concept of functional groups was applied for the first time to the seasonal dynamics of the phytoplankton community of Mudanjiang River (northeast China). The environmental variables as well as the phytoplankton communities were determined in 2007. The river showed strong seasonal fluctuations in wa…
Abstract Investigating how rubber materials are affected by strain and strain rate (or frequency) in the room‐to‐curing temperature range allows to fully characterize them not only with respect to their processing behavior but also in view of their likely performances after vulcanization. Using a closed cavity dynamic…
Thermodynamically stable phases of sodium amide (NaNH 2 ) at pressures up to 20 GPa have been determined using the ab initio evolutionary structure prediction. We find that the ground-state phase α-NaNH 2 (orthorhombic, Fddd ) first transforms into β-NaNH 2 (orthorhombic, P 2 1 2 1 2) at 2.2 GPa; then, γ-NaNH 2 (monoc…
We report the synthesis of single crystalline Co(2)Si nanowires and the electrical transport studies of single Co(2)Si nanowire devices at low temperature. The butterfly shaped magnetoresistance shows interesting ferromagnetic features, including negative magnetoresistance, hysteretic switch fields, and stepwise drops…
Steady magnetization precession can be excited by a DC spin-polarized current in a spin-valve with combined in-plane (IP) and out-of-plane (OP) dual polarizers. The precession frequency is proportional to the strength of spin-torque generated by the OP polarizer but less sensitive to the IP polarizer, which can be suc…
A series of platinum(II) complexes with the formulas Pt(diimine)(pip(2)NCNH(2))(L)(2+) [pip(2)NCNH(2)(+) = 2,6-bis(piperidiniummethyl)phenyl cation; L = Cl, Br, I, NCS, OCN, and NO(2); diimine = 1,10-phenanthroline (phen), 5-nitro-1,10-phenanthroline (NO(2)phen), and 5,5'-ditrifluoromethyl-2,2'-bipyridine (dtfmbpy)] w…
On the basis of density functional theory calculations, we study the electronic and magnetic properties of an iron phthalocyanine (FePc) nanosheet (FePcNST) and its derivatives, nanoribbons (FePcNRs) and nanotubes (FePcNTs). The GGA+ U +SOC calculations reveal that the interesting in-plane magnetic anisotropy comes fr…