In this paper, various algorithms used in the classifications of regular polytopes for given groups are compared. First computational times and memory usages are analyzed for the original algorithm used in one of these classifications. Second, a possible algorithm for isomorphism testing among polytopes is suggested. Then, two improved algorithms are compared, and finally, results are given for...

Prussian blue analogue Co3[Co(CN)6]2 nanostructures with morphologies of truncated nanocubes (polyhedra), cubes and rods, were synthesized in large quantities by a direct dissociation of the single-source precursor K3[Co(CN)6] in a microemulsion system; the molar ratio of H2O to surfactant and the concentration of K3[Co(CN)6] both played important roles in determining the shape of the product.

The synthesis of low-temperature belite (C2S) clinker from wastes autoclaved aerated concrete and limestone was studied in the presence CaCl2 as a mineralizing agent. Synthetic chlorellestadite (SCE; Ca10(SiO4)3(SO4)3Cl2) forms experiments at temperatures between 700 1200 °C. Samples were investigated by X-ray diffraction Raman spectroscopy. In general, amount SCE depends mainly on sulfate cont...

In this work the ability of Zn2-xCuxCr-CO3 layered double hydroxides (LDHs) as highly efficient DeNOx photocatalysts was studied. LDHs with x = 0, 0.2 and 0.4 were prepared using a coprecipitation method. The samples characterized by different techniques such XRD, XPS, FT-IR, ICP-MS, TG, SBET, SEM Diffuse reflectance (DR). increased amount copper ions in LDH layers gave rise to slight changes s...

Novel Co-Cu complex nanorods with diameters of 100-200 nm and nanorings with a ring-diameter of 80 nm were synthesized via a microemulsion method at room temperature. Using this method, the addition of Co(NH3)(3+)6 to aqueous solutions of Cu(ii) in excessive carbonate promotes the assembly of a new highly charged carbonato-copper(ii) anion, [Cu4(OH)(CO3)8]9-.

The t-expansion is a nonperturbative calculational tool recently developed for Hamiltonian systems. A short review of the method is given. It is followed by a summary of applications to two dimensional spin systems and to four dimensional non-abelian lattice gauge theories. Invited talk presented at the ITP Workshop on Nuclear Chromodynamics Santa Barbara, California, August 12-23, 1985 * Work ...