9,384 research outputs found
Chapter Refinement of Protein Tertiary Structure by Using Spin-Spin Coupling Constants from Nuclear Magnetic Resonance Measurements
Communications engineering / telecommunication
E_0-Semigroups for Continuous Poduct Systems: The Nonunital Case
Let B be a sigma-unital C*-algebra. We show that every strongly continuous
E_0-semigroup on the algebra of adjointable operators on a full Hilbert
B-module E gives rise to a full continuous product system of correspondences
over B. We show that every full continuous product system of correspondences
over B arises in that way. If the product system is countably generated, then E
can be chosen countable generated, and if E is countably generated, then so is
the product system. We show that under these countability hypotheses there is a
one-to-one correspondence between E_0-semigroup up to stable cocycle conjugacy
and continuous product systems up isomorphism. This generalizes the results for
unital B to the sigma-unital case
THE TNF-ALPHA INHIBITOR ETANERCEPT AS MONOTHERAPY IN TREATMENT-RESISTANT DEPRESSION â REPORT OF TWO CASES
Search strategies for Neuroendoscopic evacuation improves outcomes compared to external ventricular drainage in patients with spontaneous intraventricular hemorrhage: a systematic review with meta-analyses
Equilibrium Beam Distribution and Halo in the LHC
The equilibrium LHC beam distribution at large amplitudes is a crucial input to the collimation and machine protection design, as well as to background studies. Its estimation requires a knowledge of the diffusion rates at which beam particles are transported to large transverse or longitudinal amplitudes. Important known mechanisms of particle diffusion include Touschek scattering, synchrotron radiation, intrabeam scattering (IBS) the nonlinear motion due to the long-range (LR) beam-beam (BB) collisions at top energy, persistent-current field errors during injection and at the start of acceleration, and Coulomb scattering off the residual gas. We summarize the expected contributions from different sources, introduce a diffusion model, and illustrate the evolution of the beam distribution at 7 TeV
Phosphorus donors in highly strained silicon
The hyperfine interaction of phosphorus donors in fully strained Si thin
films grown on virtual SiGe substrates with is
determined via electrically detected magnetic resonance. For highly strained
epilayers, hyperfine interactions as low as 0.8 mT are observed, significantly
below the limit predicted by valley repopulation. Within a Green's function
approach, density functional theory (DFT) shows that the additional reduction
is caused by the volume increase of the unit cell and a local relaxation of the
Si ligands of the P donor.Comment: 12 pages, 3 figure
A Textured Silicon Calorimetric Light Detector
We apply the standard photovoltaic technique of texturing to reduce the
reflectivity of silicon cryogenic calorimetric light detectors. In the case of
photons with random incidence angles, absorption is compatible with the
increase in surface area. For the geometrically thin detectors studied, energy
resolution from athermal phonons, dominated by position dependence, is
proportional to the surface-to-volume ratio. With the CaWO4 scintillating
crystal used as light source, the time constants of the calorimeter should be
adapted to the relatively slow light-emission times.Comment: Submitted to Journal of Applied Physic
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