Introduction: Quantitative T1 mapping based on 3D FLASH acquisitions with variable excitation flip angles (VFA) is fast and robust (1, 2). However, high accuracy can only be achieved when the local flip angle is known precisely (1). At higher static magnetic fields local flip angles may deviate considerably from the nominal flip angle due to inhomogeneities of the RF transmit/B1 field (3, 4). T...

In this paper we present a local algorithm for contrast enhancement developed by N. Moroney at Hewlett-Packard Laboratories and presented at the IS&T/SID Eight Color Imaging Conference, in 2000. The algorithm uses a non-linear masking, is fast and does not require any manual parameter adjustments. Source Code The source code (ANSI C), its documentation, and the online demo are accessible at the...

The electric field in streamer discharges in air can be easily determined by the ratio of luminous intensities emitted by N2(C 3 u) and N2(B 2 + u ) if the steady-state assumption of the emitting states is fully justified. At ground pressure, the steady-state condition is not fulfilled and it is demonstrated that its direct use to determine the local and instantaneous peak electric field in the...

The finite element method is employed for the flexural-torsional linear buckling analysis of beams of arbitrarily shaped composite cross-section taking into account generalized warping (shear lag effects due to both flexure and torsion). The contacting materials, that constitute the composite cross section, may include a finite number of holes. A compressive axial load is applied to the beam. The...

Theoretical computation of the pressure dependence superconducting state parameters of binary Ca60Al40 is reported using model potential formalism. Explicit expressions have been derived for the volume dependence of the electron–phonon coupling strength λ and the Coulomb pseudopotential μ* considering the variation of Fermi momentum KF and Debye temperature ӨD with volume. Well known Ashcroft’s...

The coherence between oscillatory activity in local field potentials (LFPs) and single neuron action potentials, or spikes, has been suggested as a neural substrate for the representation of information. The power spectrum of a spike-triggered average (STA) is commonly used to estimate spike field coherence (SFC). However, when a finite number of spikes is used to construct the STA, the coheren...

Energy transfer in noncovalently bound porphyrin/carbon nanotube compounds is investigated at the single-nanocompound scale. Excitation spectroscopy of the luminescence of the nanotube shows two resonances arising from intrinsic excitation of the nanotube and from energy transfer from the porphyrin. Polarization diagrams show that both resonances are highly anisotropic, with a preferred directi...

25 The coherence between oscillatory activity in local field potentials (LFP) and single neuron action 26 potentials, or spikes, has been suggested as a neural substrate for the representation of information. 27 The power spectrum of a spike triggered average (STA) is commonly used to estimate spike field 28 coherence (SFC). However, when a finite number of spikes are used to construct the STA,...

Decoders are one of the necessary building blocks for robust local quantum memories, basic primitives that must arguably be part of any functioning topological quantum computer. While surface codes have raised the prospects for scalability and performance of quantum storage devices, the task of decoding resorts to complicated classical algorithms. Such decoding algorithms are typically designed...