1,066 research outputs found
A translational research experience in Argentina.
Background: The Argentinean programwas initiatedmore than a decade ago as the first experience of systematic
translational research focused on NCL in Latin America. The aim was to overcome misdiagnoses and
underdiagnoses in the region.
Subjects: 216 NCL suspected individuals from 8 different countries and their direct family members.
Methods: Clinical assessment, enzyme testing, electron microscopy, and DNA screening.
Results and discussion: 1) The study confirmed NCL disease in 122 subjects. Phenotypic studies comprised
epileptic seizures and movement disorders, ophthalmology, neurophysiology, image analysis, rating scales,
enzyme testing, and electron microscopy, carried out under a consensus algorithm; 2) DNA screening and
validation of mutations in genes PPT1 (CLN1), TPP1 (CLN2), CLN3, CLN5, CLN6, MFSD8 (CLN7), and CLN8:
characterization of variant types, novel/knownmutations and polymorphisms; 3) Progress of the epidemiological
picture in Latin America; and 4) NCL-like pathology studies in progress. The Translational Research Program was
highly efficient in addressing the misdiagnosis/underdiagnosis in the NCL disorders. The study of âorphan
diseasesâ in a public administrated hospital should be adopted by the health systems, as it positively impacts
upon the family's quality of life, the collection of epidemiological data, and triggers research advances. This article
is part of a Special Issue entitled: âCurrent Research on the Neuronal Ceroid Lipofuscinoses (Batten Disease)âpublishedVersio
Deliverable Raport D4.6 Tools for generating QMRF and QPRF reports
Scientific reports carry significant importance for the straightforward and effective transfer of knowledge, results and ideas. Good practice dictates that reports should be well-structured and concise. This deliverable describes the reporting services for models, predictions and validation tasks that have been integrated within the eNanoMapper (eNM) modelling infrastructure. Validation services have been added to the Jaqpot Quattro (JQ) modelling platform and the nano-lazar read-across framework developed within WP4 to support eNM modelling activities. Moreover, we have proceeded with the development of reporting services for predictions and models, respectively QPRF and QMRF reports. Therefore, in this deliverable, we first describe the three validation schemes created, namely training set split, cross- and external validation in detail and demonstrate their functionality both on API and UI levels. We then proceed with the description of the read across functionalities and finally, we present and describe the QPRF and QMRF reporting services
The wavefront of the radio signal emitted by cosmic ray air showers
Analyzing measurements of the LOPES antenna array together with corresponding
CoREAS simulations for more than 300 measured events with energy above
eV and zenith angles smaller than , we find that the radio
wavefront of cosmic-ray air showers is of approximately hyperbolic shape. The
simulations predict a slightly steeper wavefront towards East than towards
West, but this asymmetry is negligible against the measurement uncertainties of
LOPES. At axis distances m, the wavefront can be approximated by
a simple cone. According to the simulations, the cone angle is clearly
correlated with the shower maximum. Thus, we confirm earlier predictions that
arrival time measurements can be used to study the longitudinal shower
development, but now using a realistic wavefront. Moreover, we show that the
hyperbolic wavefront is compatible with our measurement, and we present several
experimental indications that the cone angle is indeed sensitive to the shower
development. Consequently, the wavefront can be used to statistically study the
primary composition of ultra-high energy cosmic rays. At LOPES, the
experimentally achieved precision for the shower maximum is limited by
measurement uncertainties to approximately g/cm. But the simulations
indicate that under better conditions this method might yield an accuracy for
the atmospheric depth of the shower maximum, , better than
g/cm. This would be competitive with the established air-fluorescence
and air-Cherenkov techniques, where the radio technique offers the advantage of
a significantly higher duty-cycle. Finally, the hyperbolic wavefront can be
used to reconstruct the shower geometry more accurately, which potentially
allows a better reconstruction of all other shower parameters, too.Comment: accepted by JCA
Experimental evidence for the sensitivity of the air-shower radio signal to the longitudinal shower development
We observe a correlation between the slope of radio lateral distributions,
and the mean muon pseudorapidity of 59 individual cosmic-ray-air-shower events.
The radio lateral distributions are measured with LOPES, a digital radio
interferometer co-located with the multi-detector-air-shower array
KASCADE-Grande, which includes a muon-tracking detector. The result proves
experimentally that radio measurements are sensitive to the longitudinal
development of cosmic-ray air-showers. This is one of the main prerequisites
for using radio arrays for ultra-high-energy particle physics and astrophysics.Comment: 6 pages, 5 figures, accepted for publication by Physical Review
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