A recent paper in Cell (Yao et al., 2006) and two papers in Developmental Cell (Tenzen et al., 2006; Zhang et al., 2006) identify a new receptor component for Hedgehog, a key morphogen in embryonic development. Many other proteins that bind to Hedgehog in the extracellular matrix or on the cell surface have been identified. In light of these recent discoveries, we discuss how these factors cont...

Implementation of controlled/living radical polymerization in miniemulsion (typically with oil droplet diameter of 20-500 nm) for synthesis of well-defined, polymeric nanoparticles is of particular interest as miniemulsions possess the inherent advantage that ideally each monomer droplet is transformed into a polymer particles(Zetterlund et al., 2008). However, the high energy requirement for m...

Li–S Batteries In their Research Article (e202114671), Bo-Quan Li, Qiang Zhang et al. identify the surface gelation on disulfide electrocatalysts in batteries for first time.

The time has come when ensemble-based Kalman filter data assimilation schemes can be considered for implementation on operational weather forecast systems in the foreseeable future. For the first time, an ensemble Kalman filter has been reported to break even with a sophisticated operational 3DVar system (Houtekamer et al 2004), to outperform the NCEP 3D-Var in reconstructing the state of the m...

Fullerenes. In their Research Article (e202211704), Jianyuan Zhang et al. report the synthesis of metallobuckytrio (MBT), a three-buckyball system, as modular platform for family structurally defined metallofullerene derivatives that can safely carry rare-earth elements.

Fullerenes. In their Research Article (e202211704), Jianyuan Zhang et al. report the synthesis of metallobuckytrio (MBT), a three-buckyball system, as modular platform for family structurally defined metallofullerene derivatives that can safely carry rare-earth elements.

Graz University of Technology, Institute of Environmental Biotechnology, Petersgasse 12, A6 8010 Graz, Austria; Julius Kühn-Institut (JKI), Messeweg 11, D-38104 Braunschweig, 7 Germany, Kawanda Agricultural Research Institute, National Banana Research Program, 8 Uganda; Makerere University, Department of Agricultural Production, College of 9 Agricultural and Environmental Sciences, Uganda and B...

A group signature scheme allows a group member of a group to sign messages on behalf of the group anonymously. In case of dispute, a special entity of the group, group manager, can reveal the signer of a valid group signature. In 2005, Zhang et al. proposed a new group signature with forward security based on their earlier scheme in ICICS 2003. Recently, Zhou et al. proposed a dynamic group sig...