The effects of six particulate metals (Al, Ti, Zr, Nb, Ta and Cr) on cell viability and alkaline phosphatase (ALP) activity were studied in vitro using two types of osteoblast-like cells, MG-63 and HOS cells. The cell viability in the presence of Al, Ti and Zr was depressed at lower concentrations than in the presence of Nb, Ta and Cr. The average sizes of the Al, Ti, Zr, Nb, Ta and Cr particul...

Ni57Zr22X8Nb8Al5 (X = Ti, Cu) metallic glass (MG) and nanocomposite powders were synthesized by mechanical alloying. Outstanding differences in glass-forming ability (GFA), thermal property, particle size and crystallization behavior were found for the two synthesized alloy powders with different alloying substitutions. The Ti-containing MG powder exhibits better GFA, higher thermal stability, ...

Introduction: Evidence for isotopic anomalies in bulk car-bonaceous chondrites relative to other meteorites, the moon and Earth have recently been reported for several elements (Sm, Nd, Ba, Ti and Cr[1, 2, 3]). The nature of these heterogeneities is not very well understood. The isotopic composition of Zr mainly reflects a mixture of different sand r-process nucleosynthetic components. The s-pr...

Retraction of 'Atomic-scale simulation to study the dynamical properties and local structure of Cu-Zr and Ni-Zr metallic glass-forming alloys' by M. H. Yang et al., Phys. Chem. Chem. Phys., 2016, 18, 7169-7183.

We study synaptic plasticity in a complex neuronal cell model where NMDA-spikes can arise in certain dendritic zones. In the context of reinforcement learning, two kinds of plasticity rules are derived, zone reinforcement (ZR) and cell reinforcement (CR), which both optimize the expected reward by stochastic gradient ascent. For ZR, the synaptic plasticity response to the external reward signal...

Nanocomposite materials of the Fe-Cu system with/without small addition of carbon nanotubes have been synthesized by mechanochemical activation of elemental Fe and Cu powders in a high-energy planetary ball mill and have been examined by the X-ray diffraction method, SEM and the thermopower methods; the tensile strength of the materials obtained has been estimated. The metastable (Fe, Cu) super...

This paper is dedicated to the Calphad modelling of Cr–Fe–Nb–Sn–Zr quinary system. In previous papers, thermodynamic Cr–Nb–Sn–Zr quaternary system, Fe–Sn–Zr and Fe–Nb–Zr ternary systems as well Fe–Nb binary system were carried out. Since no experimental data available for Cr–Fe–Sn Fe–Nb–Sn systems, new partial isothermal sections have been measured at 1073K 973K, respectively. addition these da...

In this paper, we present a thorough stress analysis of the Cu-Zr metallic-glass composite with embedded B2 particles subject to a martensitic transformation. Within the framework of the Eshelby theory, we are able to explain, in a quantitative manner, (1) the formation of three types of shear bands with distinct morphologies as observed experimentally in the severely deformed Cu-Zr metallic-gl...

A modular system for the construction of radiometalated antibodies was developed based on the bioorthogonal cycloaddition reaction between 3-(4-benzylamino)-1,2,4,5-tetrazine and the strained dienophile norbornene. The well-characterized, HER2-specific antibody trastuzumab and the positron emitting radioisotopes (64)Cu and (89)Zr were employed as a model system. The antibody was first covalentl...