Electrophysiological evidence for an early processing of human voices

Background  

Previous electrophysiological studies have identified a "voice specific response" (VSR) peaking around 320 ms after stimulus onset, a latency markedly longer than the 70 ms needed to discriminate living from non-living sound sources and the 150 ms to 200 ms needed for the processing of voice paralinguistic qualities. In the present study, we investigated whether an early electrophysiological difference between voice and non-voice stimuli could be observed.     

Effect of cetyltrimethylammonium bromide on the migration of polyaromatic hydrocarbons in capillary electrokinetic chromatography

The separation of different ring numbered polyaromatic hydrocarbons (PAHs) was accomplished by using cetyltrimethylammonium bromide (CTAB) in capillary electrokinetic chromatography. In order to increase the solubilities and selectivities of PAHs, acetonitrile (ACN) was used as an organic modifier. Under the optimised conditions, 11 aromatic compounds were separated within 14.5 min in a running electrolyte containing 10 mM phosphate, 30 mM CTAB, and 40% ACN at pH 6.0. The effects of CTAB and ACN concentrations, voltage and pH on the resolution were investigated. Reproducibilities of migration times range between 0.55 and 1.27 R.S.D.% and peak areas between 1.02 and 7.23 R.S.D.%. Limit of detections (LODs) range between 0.09 and 2.24 μg ml⁻¹. This new and fast separation method of PAHs was applied to cooked oil sample.     

4‐[Bis(1,5‐dimethyl‐1H‐pyrazol‐3‐yl­meth­yl)­amino]phenol monohydrate

The crystal structure of the title compound, C₁₈H₂₃N₅O·H₂O, shows mol­ecules containing a phenol group linked perpendicularly to a roughly planar fragment comprising two pyrazole rings. Mol­ecules are stacked perpendicular to the [101] direction, with their phenol groups disposed alternately. The mol­ecular packing in the crystal is stabilized by hydrogen bonding involving water mol­ecules.     

New nickel gallium boride, B14Ga3Ni27: synthesis and crystal structure

Crystals of the new compound B(14)Ga(3)Ni(27) were successfully prepared by arc melting of the elements. B(14)Ga(3)Ni(27) crystallizes as a novel structure type in the monoclinic space group P2(1)/m with unit cell parameters a = 8.6859(4) ?, b = 10.7477(4) ?, c = 8.8425(3) ?, β = 90.707(4)°, and Z = 2. Its structure was solved from single crystal data and refined to R1(F) = 0.0225. The unit cell of B(14)Ga(3)Ni(27) contains boron dumbbells and isolated gallium atoms embedded in a nickel 3D-framework. Its electronic structure, calculated by DFT methods, indicates metallic properties.     

Extending Excited-state Lifetimes by Interchromophoric Triplet-state Equilibration in a Pyrene-Ru(II)diimine Dyad System

The synthesis and the spectroscopic properties of a bichromophoric ruthenium trisbipyridyl-1,4-diethynylenebenzene-pyrene system (Ru-b-Py) and the corresponding pyrene ligand (b-Py) are reported. The ruthenium model systems Ru-b-OH, Ru-b-Ph are also presented. UV–Vis absorption and emission at room and low temperature and time-resolved spectroscopy are discussed. For the Ru-b-Py dyad, a mixing of the ³MLCT state of the ruthenium-based component and the triplet state of pyrene, ³Py, is observed. Time-resolved transient absorption studies performed on the Ru-b-Py and on the b-Py ligand show that the lowest energy absorption is due to the population of the triplet state localized on the pyrene-component. Time-resolved studies also evidenced a relatively slow forward triplet equilibration rate, in the order of 2×10⁵?s^-1 (5?μs), and an even slower back energy transfer rate, 3.3×10⁴?s^-1, still faster than the intrinsic decay time of the pyrene (200?μs).     

Three novel phases in the Sm-Co-Ga system. Syntheses, crystal and electronic structures, and electrical and magnetic properties

This paper presents the synthesis, identification, and characterization of three novel phases in the ternary system Sm-Co-Ga: SmCoGa5 (tP7, HoCoGa5 type, tetragonal P4/mmm, Z = 1, a = 4.2419(3) A, and c = 6.8559(5) A), Sm4Co3Ga16 (tP23, tetragonal P4/mmm, Z = 1, a = 6.0620(5) A, and c = 11.1495(9) A), and SmCoGa4 (oC24, YNiAl4 type, orthorhombic Cmcm, Z = 4, a = 4.1246(6) A, b = 15.608(2) A, and c = 6.4556(9) A). The structure of SmCoGa5 was obtained from a multiphase X-ray powder Rietveld refinement whereas the crystal structures of the other two phases were determined from single-crystal X-ray analysis. Electronic structures were calculated for all phases by first-principles DFT methods. The atomic arrangements and bonding are discussed on the basis of the partial anionic networks involving Co and Ga atoms, and a strong structural correlation is observed between SmCoGa5 and Sm4Co3Ga16. The latter, which displays paramagnetic behavior, has a resistivity of 4.2 microOmega.cm at 3 K and undergoes a superconducting transition at 2.8 K.     

Integral resource capacity planning for inpatient care services based on bed census predictions by hour

The design and operations of inpatient care facilities are typically largely historically shaped. A better match with the changing environment is often possible, and even inevitable due to the pressure on hospital budgets. Effectively organizing inpatient care requires simultaneous consideration of several interrelated planning issues. Also, coordination with upstream departments like the operating theatre and the emergency department is much-needed. We present a generic analytical approach to predict bed census on nursing wards by hour, as a function of the Master Surgical Schedule and arrival patterns of emergency patients. Along these predictions, insight is gained on the impact of strategic (ie, case mix, care unit size, care unit partitioning), tactical (ie, allocation of operating room time, misplacement rules), and operational decisions (ie, time of admission/discharge). The method is used in the Academic Medical Center Amsterdam as a decision-support tool in a complete redesign of the inpatient care operations.