Reassortment is important for influenza virus evolution and the generation of novel viruses with pandemic potential; however, the factors influencing reassortment are still poorly understood. Here, using reverse genetics and a replicon assay, we demonstrated that a mixed polymerase complex containing a pandemic (H1N1) 2009 influenza virus PB2 on a seasonal H1N1 virus background has reduced poly...

The possibility of Pb2+, Cd2+, Ni2+ and Ba2+ ions removal from aqueous solution using light expanded clay aggregate (LECA) was investigated in this work. central composite design (CCD) response surface methodology (RSM) used to optimize the operating parameters (adsorbent granulometry, absorption time initial metal concentration) reach maximum single multi-elemental solutions. After optimizatio...

Bifunctional tetrakis(methylthio)-1,4-benzenedicarboxylic acid and Pb2+ ions form a robust porous net featuring free-standing thioether groups that allow reversible uptake of HgCl2.

The generation of influenza A virus defective interfering (DI) particles was studied by using an NS2 mutant which produces, in a single cycle of virus replication, a large amount of DI particles lacking the PA polymerase gene. The decrease in PA gene replication has been shown to occur primarily at the cRNA synthesis step, with preferential amplification of PA DI RNA species present in a margin...

A new fluorescent sensor based on the BODIPY fluorophore and the polyamide receptor for Pb(2+) was designed and synthesized. The sensor is highly selective for Pb(2+) over relevant competing metal ions, and sensitive to ppb levels of Pb(2+). It features the most sensitive probe to date for Pb(2+) ions in water.

In the polymeric title complex, [Pb(2)(CH(3)CO(2))(2)(C(10)H(6)O(6)S(2))](n), the acetate anion functions in a chelating mode and both O atoms also coordinate to adjacent Pb(II) atoms. The naphthalene-1,5-disulfonate dianion, which lies on a center of inversion, is connected to four Pb(II) atoms. The bridging modes of the monoanion and dianion give rise to a three-dimensional coordination polym...

The Pb(II) atom in the polymeric title compound, [Pb(C(8)H(4)O(4))(C(12)H(6)N(2)O(2))](n), is chelated by the N-heterocycle, and adjacent atoms are bridged by rigid terephthalate dianions into a linear chain. The Pb(II) atom is stereochemically active in a ψ-square-pyramidal coordination geometry in which the lone-pair electrons occupy a basal site. When three other weaker Pb⋯O inter-actions ar...

The two cupferronate ions and the N-heterocycle in the mononuclear title compound, [Pb(C(6)H(5)N(2)O(2))(2)(C(12)H(8)N(2))], O,O'- and N,N'-chelate to the Pb(II) atom, the geometry of which is a distorted Ψ-penta-gonal bipyramid.

In the title compound, [PbBr(2)(C(14)H(12)N(2))](n), the Pb(II) atom lies on a twofold rotation axis. The N-heterocycle-chelated Pb(II) atom exists in a distorted octa-hedral geometry owing to two long Pb⋯Br inter-actions [2.9562 (5) and 3.2594 (5) Å]. These result in a zigzag chain running along the c axis. The lone pair is stereochemically inactive.