Topological insulators on the square-hexagon lattice driven by next-nearest-neighbor hopping.

We investigate the topological phase transition of the square-hexagon lattice driven by the next-nearest-neighbor (NNN) hopping. By means of the Fukui-Hatsugai method, the topological invariantcan be determined. The phase diagrams in the (,) plane for different filling fractions are displayed, together with the size of the bulk band gap.

Anti-Trimeresurus albolabris venom IgY antibodies: preparation, purification and neutralization efficacy.

Background: Snakebite incidence in southwestern China is mainly attributed to one of the several venomous snakes found in the country, the white-lipped green pit viper Trimeresurus albolabris. Since antivenom produced from horses may cause numerous clinical side effects, the present study was conducted aiming to develop an alternative antivenom antibody (immunoglobulin Y - IgY) from leghorn chickens.

Methods: IgY in egg yolk from white leghorn chicken previously injected with T.