Topologically interlocked materials and structures, which are assemblies of unbonded interlocking building blocks, promising concepts for versatile structural applications. They have been shown to exhibit exceptional mechanical properties, including outstanding combinations stiffness, strength, toughness, beyond those achievable with common engineering materials. Recent work has established a t...

Stabilizations and atomic level quadrupole coupling constant (CQ) properties have been investigated for graphene–like monolayers (G–monolayers) of boron nitride (BN), boron phosphide (BP), aluminum nitride (AlN), and aluminum phosphide (AlP) structures. To this aim, density functional theory (DFT) calculations have been performed to optimize the model structures and also to evaluate the CQ para...

viroids are smallest, single-stranded, circular, highly structured plant pathogenic rnas that do not code for any protein. viroids belong to two families, the avsunviroidae and the pospiviroidae. members of the pospiviroidae family adopt a rod-like secondary structure. in this study the most stable secondary structures of citrus viroid variants that reported from fars province were drawn. the m...

r 200 3 .: +1 212 t.Probst@ lo). Summary A specific form of intra-organizational networks – a community of practice (COP) – is increasingly regarded as an important structure within organizations. This network structure is well suited for the development and sharing of knowledge and practices across divisions. Our research explores the most salient reasons for the success and failure of such ne...