1,776 research outputs found
Exploring the Relationship Between Misophonia Severity and Anterior Insular Cortex Activity
Misophonia is an under-recognized neuropsychological condition involving a severe sensitivity towards specific sounds called triggers. The aim of this study was to investigate how activity in the anterior insular cortex (AIC) differed with varying levels of sound sensitivity (SS); misophonia being the most severe. Data was collected from university undergraduates/young adults (N = 31). Participants completed an online survey to assess their misophonia severity and symptoms. A case study was conducted on some of the students (N = 4) to assess misophonia at a neurological level. In addition to experiencing a heightened sensitivity to sounds, the misophonia group reported having more primary triggers. Disgust, anger and anxiety were experienced more frequently in the misophonia group in response to a trigger. The participant with misophonia demonstrated heightened activity in the AIC in response to a trigger, but unexpectedly this activity did not exceed the activity elicited in the no SS participants. Differences in the misophonic reaction were found amongst varying levels of SS, but more participants are needed before conclusions can be made about whether or not these differences have a neurological basis
The new versatile general purpose surface-muon instrument (GPS) based on silicon photomultipliers for SR measurements on a continuous-wave beam
We report on the design and commissioning of a new spectrometer for muon-spin
relaxation/rotation studies installed at the Swiss Muon Source (SS) of the
Paul Scherrer Institute (PSI, Switzerland). This new instrument is essentially
a new design and replaces the old general-purpose surface-muon instrument (GPS)
which has been for long the workhorse of the SR user facility at PSI. By
making use of muon and positron detectors made of plastic scintillators read
out by silicon photomultipliers (SiPMs), a time resolution of the complete
instrument of about 160 ps (standard deviation) could be achieved. In addition,
the absence of light guides, which are needed in traditionally built SR
instrument to deliver the scintillation light to photomultiplier tubes located
outside magnetic fields applied, allowed us to design a compact instrument with
a detector set covering an increased solid angle compared to the old GPS.Comment: 11 pages, 11 figure
Lithium Diffusion & Magnetism in Battery Cathode Material LixNi1/3Co1/3Mn1/3O2
We have studied low-temperature magnetic properties as well as
high-temperature lithium ion diffusion in the battery cathode materials
LixNi1/3Co1/3Mn1/3O2 by the use of muon spin rotation/relaxation. Our data
reveal that the samples enter into a 2D spin-glass state below TSG=12 K. We
further show that lithium diffusion channels become active for T>Tdiff=125 K
where the Li-ion hopping-rate [nu(T)] starts to increase exponentially.
Further, nu(T) is found to fit very well to an Arrhenius type equation and the
activation energy for the diffusion process is extracted as Ea=100 meV.Comment: Submitted to Journal of Physics: Conference Series (2014
QCD Analysis of Dijet Production at Low {\boldmath } at HERA
Recent H1 data on triple differential dijet cross sections in
interactions in the region of low photon virtualities are shown to be in
reasonable agreement with the predictions of the NLO QCD calculations obtained
using the program NLOJET++. The implications of this observation for the
phenomenological relevance of the concept of resolved virtual photon are
discussed.Comment: 5 pages, 3 figure
Magnetic Order in the 2D Heavy-Fermion System CePt2In7 studied by muSR
The low-temperature microscopic magnetic properties of the quasi-2D
heavyfermion compound, CePt2In7 are investigated by using a positive muon-spin
rotation and relaxation (?muSR) technique. Clear evidence for the formation of
a commensurate antiferromagnetic order below TN=5.40 K is presented. The
magnetic order parameter is shown to fit well to a modified BSC gap-energy
function in a strong-coupling scenario.Comment: Accepted in Journal of Physics: Conference Series (2014
The Effect of Calcining Temperature on Photocatalytic Activity of Porous ZnO Architecture
Zinc oxide (ZnO) nano crystals assembled porous architecture was prepared by thermal decomposition of zinc oxalate precursor at various temperatures ranging from 400-900°C. The effect of calcining temperature on structure and morphology was examined by scanning electron microscopy (SEM), X-ray diffractometry, thermogravimetry, and BET adsorption analysis. The porous nano crystalline ZnO morphology was developed due to the release of volatile precursor products, while the overall shape of ZnO micro crystals was retained as a legacy of the precursor. The average crystallite size increased with increasing temperature of calcination from approximately 21 nm to 79 nm, while the specific surface area decreased from 30 to 1.7 m2g-1. The photo catalytic performance of prepared ZnO powders was evaluated by degradation of methyl violet 2B, a model compound. The significantly highest photo catalytic activity was achieved with powder calcined at 500°C. This may be attributed to the sufficiently well-developed crystalline arrangement, while the specific surface area is still high enough
The Effect of Calcining Temperature on Photocatalytic Activity of Porous ZnO Architecture
Zinc oxide (ZnO) nano crystals assembled porous architecture was prepared by thermal decomposition of zinc oxalate precursor at various temperatures ranging from 400-900°C. The effect of calcining temperature on structure and morphology was examined by scanning electron microscopy (SEM), X-ray diffractometry, thermogravimetry, and BET adsorption analysis. The porous nano crystalline ZnO morphology was developed due to the release of volatile precursor products, while the overall shape of ZnO micro crystals was retained as a legacy of the precursor. The average crystallite size increased with increasing temperature of calcination from approximately 21 nm to 79 nm, while the specific surface area decreased from 30 to 1.7 m2g-1. The photo catalytic performance of prepared ZnO powders was evaluated by degradation of methyl violet 2B, a model compound. The significantly highest photo catalytic activity was achieved with powder calcined at 500°C. This may be attributed to the sufficiently well-developed crystalline arrangement, while the specific surface area is still high enough
- …