90 research outputs found
Assessing fitness-to-practice of overseas-trained health practitioners by Australian registration & accreditation bodies
Assessment of fitness-to-practice of health professionals trained overseas and who wish to practice in
Australia is undertaken by a range of organisations. These organisations conduct assessments using a range of
methods. However there is very little published about how these organisations conduct their assessments. The
purpose of the current paper is to investigate the methods of assessment used by these organisations and the
issues associated with conducting these assessments
Culture Enriched Molecular Profiling of the Cystic Fibrosis Airway Microbiome
The microbiome of the respiratory tract, including the nasopharyngeal and oropharyngeal microbiota, is a dynamic community of microorganisms that is highly diverse. The cystic fibrosis (CF) airway microbiome refers to the polymicrobial communities present in the lower airways of CF patients. It is comprised of chronic opportunistic pathogens (such as Pseudomonas aeruginosa) and a variety of organisms derived mostly from the normal microbiota of the upper respiratory tract. The complexity of these communities has been inferred primarily from culture independent molecular profiling. As with most microbial communities it is generally assumed that most of the organisms present are not readily cultured. Our culture collection generated using more extensive cultivation approaches, reveals a more complex microbial community than that obtained by conventional CF culture methods. To directly evaluate the cultivability of the airway microbiome, we examined six samples in depth using culture-enriched molecular profiling which combines culture-based methods with the molecular profiling methods of terminal restriction fragment length polymorphisms and 16S rRNA gene sequencing. We demonstrate that combining culture-dependent and culture-independent approaches enhances the sensitivity of either approach alone. Our techniques were able to cultivate 43 of the 48 families detected by deep sequencing; the five families recovered solely by culture-independent approaches were all present at very low abundance (<0.002% total reads). 46% of the molecular signatures detected by culture from the six patients were only identified in an anaerobic environment, suggesting that a large proportion of the cultured airway community is composed of obligate anaerobes. Most significantly, using 20 growth conditions per specimen, half of which included anaerobic cultivation and extended incubation times we demonstrate that the majority of bacteria present can be cultured
First measurement of neutrino oscillation parameters using neutrinos and antineutrinos by NOvA
The NOvA experiment has seen a 4.4Ï signal of ÎœÌe appearance in a 2 GeV ÎœÌÎŒ beam at a distance of 810 km. Using 12.33Ă1020 protons on target delivered to the Fermilab NuMI neutrino beamline, the experiment recorded 27 ÎœÌÎŒâÎœÌe candidates with a background of 10.3 and 102 ÎœÌÎŒâÎœÌÎŒ candidates. This new antineutrino data are combined with neutrino data to measure the parameters |Îm322|=2.48-0.06+0.11Ă10-3 eV2/c4 and sin2Ξ23 in the ranges from (0.53-0.60) and (0.45-0.48) in the normal neutrino mass hierarchy. The data exclude most values near ÎŽCP=Ï/2 for the inverted mass hierarchy by more than 3Ï and favor the normal neutrino mass hierarchy by 1.9Ï and Ξ23 values in the upper octant by 1.6Ï
First measurement of neutrino oscillation parameters using neutrinos and antineutrinos by NOvA
The NOvA experiment has seen a
4.4
Ï
signal of
ÂŻ
Μ
e
appearance in a 2 GeV
ÂŻ
Μ
Ό
beam at a distance of 810 km. Using
12.33
Ă
10
20
protons on target delivered to the Fermilab NuMI neutrino beamline, the experiment recorded 27
ÂŻ
Μ
Ό
â
ÂŻ
Μ
e
candidates with a background of 10.3 and 102
ÂŻ
Μ
Ό
â
ÂŻ
Μ
Ό
candidates. This new antineutrino data are combined with neutrino data to measure the parameters
|
Î
m
2
32
|
=
2.4
8
+
0.11
â
0.06
Ă
10
â
3
â
â
eV
2
/
c
4
and
sin
2
Ξ
23
in the ranges from (0.53â0.60) and (0.45â0.48) in the normal neutrino mass hierarchy. The data exclude most values near
ÎŽ
C
P
=
Ï
/
2
for the inverted mass hierarchy by more than
3
Ï
and favor the normal neutrino mass hierarchy by
1.9
Ï
and
Ξ
23
values in the upper octant by
1.6
Ï
Measurement of neutrino-induced neutral-current coherent Ï0 production in the NOvA near detector
The cross section of neutrino-induced neutral-current coherent Ï0 production on a carbon-dominated target is measured in the NOvA near detector. This measurement uses a narrow-band neutrino beam with an average neutrino energy of 2.7 GeV, which is of interest to ongoing and future long-baseline neutrino oscillation experiments. The measured, flux-averaged cross section is Ï=13.8±0.9(stat)±2.3(syst)Ă10â40cm2/nucleus, consistent with model prediction. This result is the most precise measurement of neutral-current coherent Ï0 production in the few-GeV neutrino energy region
Scintillation light detection in the 6-m drift-length ProtoDUNE Dual Phase liquid argon TPC
DUNE is a dual-site experiment for long-baseline neutrino oscillation studies, neutrino astrophysics and nucleon decay searches. ProtoDUNE Dual Phase (DP) is a 6Â Ă Â 6Â Ă Â 6Â m 3 liquid argon time-projection-chamber (LArTPC) that recorded cosmic-muon data at the CERN Neutrino Platform in 2019-2020 as a prototype of the DUNE Far Detector. Charged particles propagating through the LArTPC produce ionization and scintillation light. The scintillation light signal in these detectors can provide the trigger for non-beam events. In addition, it adds precise timing capabilities and improves the calorimetry measurements. In ProtoDUNE-DP, scintillation and electroluminescence light produced by cosmic muons in the LArTPC is collected by photomultiplier tubes placed up to 7Â m away from the ionizing track. In this paper, the ProtoDUNE-DP photon detection system performance is evaluated with a particular focus on the different wavelength shifters, such as PEN and TPB, and the use of Xe-doped LAr, considering its future use in giant LArTPCs. The scintillation light production and propagation processes are analyzed and a comparison of simulation to data is performed, improving understanding of the liquid argon properties
Supernova neutrino burst detection with the Deep Underground Neutrino Experiment
The Deep Underground Neutrino Experiment (DUNE), a 40-kton underground liquid argon time projection chamber experiment, will be sensitive to the electron-neutrino flavor component of the burst of neutrinos expected from the next Galactic core-collapse supernova. Such an observation will bring unique insight into the astrophysics of core collapse as well as into the properties of neutrinos. The general capabilities of DUNE for neutrino detection in the relevant few- to few-tens-of-MeV neutrino energy range will be described. As an example, DUNE's ability to constrain the Îœe spectral parameters of the neutrino burst will be considered
The Single-Phase ProtoDUNE Technical Design Report
ProtoDUNE-SP is the single-phase DUNE Far Detector prototype that is under construction and will be operated at the CERN Neutrino Platform (NP) starting in 2018. ProtoDUNE-SP, a crucial part of the DUNE effort towards the construction of the first DUNE 10-kt fiducial mass far detector module (17 kt total LAr mass), is a significant experiment in its own right. With a total liquid argon (LAr) mass of 0.77 kt, it represents the largest monolithic single-phase LArTPC detector to be built to date. It's technical design is given in this report
Experiment Simulation Configurations Approximating DUNE TDR
The Deep Underground Neutrino Experiment (DUNE) is a next-generation long-baseline neutrino oscillation experiment consisting of a high-power, broadband neutrino beam, a highly capable near detector located on site at Fermilab, in Batavia, Illinois, and a massive liquid argon time projection chamber (LArTPC) far detector located at the 4850L of Sanford Underground Research Facility in Lead, South Dakota. The long-baseline physics sensitivity calculations presented in the DUNE Physics TDR, and in a related physics paper, rely upon simulation of the neutrino beam line, simulation of neutrino interactions in the near and far detectors, fully automated event reconstruction and neutrino classification, and detailed implementation of systematic uncertainties. The purpose of this posting is to provide a simplified summary of the simulations that went into this analysis to the community, in order to facilitate phenomenological studies of long-baseline oscillation at DUNE. Simulated neutrino flux files and a GLoBES configuration describing the far detector reconstruction and selection performance are included as ancillary files to this posting. A simple analysis using these configurations in GLoBES produces sensitivity that is similar, but not identical, to the official DUNE sensitivity. DUNE welcomes those interested in performing phenomenological work as members of the collaboration, but also recognizes the benefit of making these configurations readily available to the wider community
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