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Now showing items 201-210 of 233
Solitonic behaviour in coupled multi atom-cavity systems
(IOP Publishing, 2009-01-30)
In view of current research effort on semiconducting photonic-crystal defect microcavities, we consider the dynamics of an array of coupled optical cavities, each containing an ensemble of qubits. By concentrating on the ...
Synthesis of ZnO nanocrystals by subsequent implantation of Zn and O species
(AIP Publishing, 2005-04-29)
We report the preparation of ZnO nanocrystals embedded in a SiO2 matrix formed using sequential zinc and oxygen ion implantations. The optical absorption spectra and photoemission spectra of zinc implanted and zinc/oxygen ...
Entanglement by linear SU(2) transformations: Generation and evolution of quantum vortex states
(IOP Publishing, 2006-07-31)
We consider the evolution of a two-mode system of bosons under the action of a Hamiltonian that generates linear SU(2) transformations. The Hamiltonian is generic in that it represents a host of entanglement mechanisms, ...
Patch-based structural masking model with an application to compression
(Hindawi Publishing Corporation, 2009-04-13)
The ability of an image region to hide or mask a given target signal continues to play a key role in the design of numerous image processing and vision systems. However, current state-of-the-art models of visual masking ...
Phylogenetic and metabolic diversity of Planctomycetes from anaerobic, sulfide- and sulfur-rich Zodletone Spring, Oklahoma
(American Society for Microbiology, 2007-08)
We investigated the phylogenetic diversity and metabolic capabilities of members of the phylum Planctomycetes in the anaerobic, sulfide-saturated sediments of a mesophilic spring (Zodletone Spring) in southwestern Oklahoma. ...
Sequence analysis of the msp4 gene of Anaplasma phagocytophilum strains
(American Society for Microbiology, 2005-03)
The causative agent of human granulocytic ehrlichiosis was recently reclassified as Anaplasma phagocytophilum, unifying previously described bacteria that cause disease in humans, horses, dogs, and ruminants. For the ...
Entangling pairs of nano-cantilevers, Cooper-pair boxes and mesoscopic teleportation
(IOP Publishing, 2006-03-07)
We propose two schemes to establish entanglement between two mesoscopic quantum systems through a third mesoscopic quantum system. The first scheme entangles two nano-mechanical oscillators in a non-Gaussian entangled state ...
Effect of an organic pesticide on mortality and learning in Africanized honey bees (Apis mellifera L.) in Brasil
(Science Publications, 2006)
Seven experiments were conducted. First, the influence of the consumption of different concentrations of the organic pesticide Bioganic® on mortality was assessed at 11 different time intervals in Africanized honey bees ...
Hybrid positron detection and optical coherence tomography system: Design, calibration, and experimental validation with rabbit atherosclerotic models
(SPIE, the international society for optics and photonics, 2005-07-01)
We evaluate the performance of our novel hybrid optical coherence tomography (OCT) and scintillating probe, demonstrate simultaneous OCT imaging and scintillating detection, and validate the system using an atherosclerotic ...
End reductions, fundamental groups, and covering spaces of irreducible open 3-manifolds
(Mathematical Sciences Publishers, 2005-05-29)
Suppose M is a connected, open, orientable, irreducible 3-manifold which is not homeomorphic to ℝ³. Given a compact 3-manifold J in M which satisfies certain conditions, Brin and Thickstun have associated to it an open ...