Highly conductive chemically‐derived graphene can be synthesized using an efficient two‐step method starting from graphene oxide. The key strategy involves the use of a CVD process to heal defects contained within the monolayers, which imparts a two order of magnitude enhancement of electrical conductivity over the merely reduced samples.

We analyze the social network emerging from the user comment activity on the website Slashdot. The network presents common features of traditional social networks such as a giant component, small average path length and high clustering, but differs from them showing moderate reciprocity and neutral assortativity by degree. Using Kolmogorov-Smirnov statistical tests, we show that the degree distributions are better explained by log-normal instead of power-law distributions. We also study the structure of discussion threads using an intuitive radial tree representation. Threads show strong heterogeneity and self-similarity throughout the different nesting levels of a conversation. We use these results to propose a simple measure to evaluate the degree of controversy provoked by a post.

No abstract

Erratum: Proton chemical shift tensors in hydrogen-bonded dimers of RCOOH and ROH [J. Chem. Phys. 7 9, 4958 (1983)] J. Chem. Phys. 80, 5869 (1984); 10.1063/1.447298 Erratum: Transient kinetics of chemical reactions with bounded diffusion perpendicular to the reaction coordinate: Intramolecular processes with slow conformational changes [J. Chem Phys. 7 8, 6947 (1983)] J. Chem. Phys. 80, 592 (1984); 10.1063/1.447296 Erratum: Vibrational optical activity calculations using infrared and Raman atomic polar tensors [J.Dynamics of hydrogen atom and proton transfer reactions. Nearly degenerate asymmetric case

A useful method for constructing a power series solution to a system of nonlinear ordinary differential equations is explained, based on the transformation of the system to polynomial format. Upon substitution in the polynomial system, the coefficients of the power series are obtained through easily programmable recurrence relations.