332 research outputs found
Air ambulance services in the Arctic 1999-2009 : a Norwegian study.
Air ambulance services in the Arctic have to deal with remote locations, long distances, rough weather conditions and seasonable darkness. Despite these challenges, the people living in the area expect a high quality of specialist health care.
The objective of this study was to analyse the air ambulance operations performed in the Norwegian Arctic and study variations in diagnoses and flight patterns around the year.
A retrospective analysis. All air ambulance operations performed during the time 1999 – 2009 period were analysed. The subjects were patients transported and flights performed. The primary outcome measures were patients’ diagnoses and task patterns around the year.
A total of 345 patients were transported and 321 flights performed. Coronary heart and vascular disease, bone fractures and infections were the most common diagnoses. Most patients (85%) had NACA score 3 or 4. Half of all fractures occurred in April and August. Most patients were males (66%), and one fourth was not Norwegian. The median flying time (one way) was 3 h 33 m. Ten percent of the flights were delayed, and only 14% were performed between midnight and 8.00 AM. The period April to August was the busiest one (58% of operations).
Norway has run a safe air ambulance service in the Arctic for the last 11 years. In the future more shipping and polar adventure operations may influence the need for air ambulances, especially during summer and autumn
The (p,n) Reaction at Intermediate Energies with the Isotopes of Oxygen (16-O, 17-O, 18-O) and 9-Be as Part of a Unified Approach to the Study of These Nuclei
This work was supported by National Science Foundation Grants PHY 76-84033A01, PHY 78-22774, and Indiana Universit
JLab Measurement of the He Charge Form Factor at Large Momentum Transfers
The charge form factor of ^4He has been extracted in the range 29 fm
fm from elastic electron scattering, detecting He
nuclei and electrons in coincidence with the High Resolution Spectrometers of
the Hall A Facility of Jefferson Lab. The results are in qualitative agreement
with realistic meson-nucleon theoretical calculations. The data have uncovered
a second diffraction minimum, which was predicted in the range of this
experiment, and rule out conclusively long-standing predictions of dimensional
scaling of high-energy amplitudes using quark counting.Comment: 4 pages, 2 figure
The (p,n) Reaction at Intermediate Energies With the Isotopes of Oxygen (16-O, 17-O, 18-O) and 9-Be as Part of a Unified Approach to the Study of These Nuclei
This work was supported by National Science Foundation Grant PHY 76-84033 and Indiana Universit
JLab Measurements of the 3He Form Factors at Large Momentum Transfers
The charge and magnetic form factors, FC and FM, of 3He have been extracted
in the kinematic range 25 fm-2 < Q2 < 61 fm-2 from elastic electron scattering
by detecting 3He recoil nuclei and electrons in coincidence with the High
Resolution Spectrometers of the Hall A Facility at Jefferson Lab. The
measurements are indicative of a second diffraction minimum for the magnetic
form factor, which was predicted in the Q2 range of this experiment, and of a
continuing diffractive structure for the charge form factor. The data are in
qualitative agreement with theoretical calculations based on realistic
interactions and accurate methods to solve the three-body nuclear problem
Low Q^2 measurements of the proton form factor ratio
We present an updated extraction of the proton electromagnetic form factor
ratio, mu_p G_E/G_M, at low Q^2. The form factors are sensitive to the spatial
distribution of the proton, and precise measurements can be used to constrain
models of the proton. An improved selection of the elastic events and reduced
background contributions yielded a small systematic reduction in the ratio mu_p
G_E/G_M compared to the original analysis.Comment: 12 pages, 5 figures, archival paper for proton form factor extraction
from Jefferson Lab "LEDEX" experimen
The Proton Elastic Form Factor Ratio at Low Momentum Transfer
High precision measurements of the proton elastic form factor ratio have been
made at four-momentum transfers, Q^2, between 0.2 and 0.5 GeV^2. The new data,
while consistent with previous results, clearly show a ratio less than unity
and significant differences from the central values of several recent
phenomenological fits. By combining the new form-factor ratio data with an
existing cross-section measurement, one finds that in this Q^2 range the
deviation from unity is primarily due to GEp being smaller than the dipole
parameterization.Comment: 5 pages, 2 figure
The (p,n) Reaction at Intermediate Energies with the Isotopes of Oxygen (16-O,17-O,18-O) and 9-Be as Part of a Unified Approach to the Study of These Nuclei
Supported by the National Science Foundation and Indiana Universit
Measurements of polarized photo-pion production on longitudinally polarized HD and Implications for Convergence of the GDH Integral
We report new measurements of inclusive pion production from frozen-spin HD
for polarized photon beams covering the Delta(1232) resonance. These provide
data simultaneously on both H and D with nearly complete angular distributions
of the spin-difference cross sections entering the Gerasimov-Drell-Hearn (GDH)
sum rule. Recent results from Mainz and Bonn exceed the GDH prediction for the
proton by 22 microbarns, suggesting as yet unmeasured high-energy components.
Our pi0 data reveal a different angular dependence than assumed in Mainz
analyses and integrate to a value that is 18 microbarns lower, suggesting a
more rapid convergence. Our results for deuterium are somewhat lower than
published data, considerably more precise and generally lower than available
calculations.Comment: 4 pages, 4 figures. Submitted for publication in Physical Review
Letter
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