We have synthesized novel crystalline ropes of "polygonized" single-wall carbon nanotubes (SWCNTs). The tubes exhibit rounded-hexagonal cross sections in contrast to the earlier observations of nearly circular tubes. To investigate the structural characteristics of the lattice of SWCNTs we have performed extensive molecular-dynamics simulations. We find several metastable structures of the latt...

Energy absorption capability of thin-walled structures with various cross sections has been considered by researchers up to now. These structures as energy absorbers are used widely in different industries such as automotive and aerospace and protect passengers and goods against impact. In this paper, mechanical behavior of thin-walled aluminum tubes with and without polyurethane foam filler su...

I report a facile wet-chemical method for the synthesis of one-dimensional copper hydroxide nitrate nanostructures in 2-propanol under solvothermal conditions. Single-crystalline nearly monodispersed copper hydroxide nitrate nanorods and nanobelts with selected breadths in the range of 100 nm to 1 μm have been successfully prepared by a solvothermal method through controlling the experimental p...

The condensation heat transfer characteristics and corrosion resistance of copper, Ni-P-Cu, polytetrafluoroethylene (PTFE), Ni-P, Ni coated tube surfaces were investigated. results indicate that coefficient PTFE, tubes grows by 36.8%, 29.3%, 19.6%, 7.5% than copper tubes, respectively. phase structure Ni, PTFE is mixed crystal structure(nanocrystals-based), (amorphous-based), amorphous structur...

1. The amino acid sequence of peptide (1-24) obtained from limited peptic digestion of bovine serum albumin has been determined from characterization of its tryptic and chymotryptic peptides. The 3 histidyl residues have been shown to occupy positions 3,9, and 18. 2. Hydrogen ion titration of this peptide with and without copper ions indicates that at neutral pH there are two copper(binding sit...