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The structure of the title compound, [La(C5H6O4)(C5H7O4)(H2O)] . H2O, consists of dense layers formed by chains of one-edge-sharing LaO9 (H2O) polyhedra, linked together by the glutarate ligand. The three-dimensional polymeric structure, built up through c ...
We report the discovery of an ultradense post-rutile polymorph of titanium dioxide in shocked gneisses of the Ries crater in Germany. The microscopic diagnostic feature is intense blue internal reflections in crossed polarizers in reflected light. X-ray di ...
Using a first-principles approach, we assess the validity of a picture for the energetics at Si-SiO2 interfaces based on bond energies complemented with penalty energies for silicon atoms in intermediate oxidation states. By total-energy calculations on cl ...
This is the final Activity report of the Coordination of the Urban Environment Management Group projects, a unity of the Swiss Priority Programme on Environment (1996-2000). ...
Fault identification and location in optical networks is hampered by a multitude of factors: (i) the redundancy and the lack of coordination (internetworking) of the managements at the different layers (WDM, SDH/SONET, ATM, IP) ...
Transfer of chirality during the build-up of molecules has been applied innumerable times in organic chemistry since the end of the 19th century, when it was introduced in the so-called asymmetric synthesis by E. Fischer. Although analogous reactions were ...
A model interface between Si and disordered SiO2 is obtained which incorporates the interface bonding pattern previously generated by first-principles molecular dynamics. The model is then characterized by comparing its properties with experimental data wh ...
Using a first-principles approach, we characterize P-b-type defects at Si-SiO2 interfaces by calculating hyperfine parameters for several relaxed structural models. Application to the Pb center at the Si(111)-SiO2 interface, for which the atomic structure ...
Using a first-principles approach, we characterize dangling bond defects at Si-SiO2 interfaces by calculating hyperfine parameters for several relaxed structures; Interface models, in which defect Si atoms remain close to crystalline sites of the substrate ...
Atomic broadcast primitives allow fault-tolerant cooperation between sites in adistributed system. Unfortunately, the delay incurred before a message can be delivered makes it difficult to implement high performance, scalable applications on top of atomic ...
