433 research outputs found
Measurement of the analyzing power of proton-carbon elastic scattering in the CNI region at RHIC
The single transverse spin asymmetry, A_N, of the p-carbon elastic scattering
process in the Coulomb Nuclear Interference (CNI) region was measured using an
ultra thin carbon target and polarized proton beam in the Relativistic Heavy
Ion Collider (RHIC) at Brookhaven National Laboratory (BNL). In 2004, data were
collected to calibrate the p-carbon process at two RHIC energies (24 GeV, 100
GeV). A_N was obtained as a function of momentum transfer -t. The results were
fit with theoretical models which allow us to assess the contribution from a
hadronic spin flip amplitude.Comment: Contribution to the proceedings of the 16th International Spin
Physics Symposium, spin2004 (Trieste
Measurement of the analyzing power in pp elastic scattering in the peak CNI region at RHIC
We report the first measurements of the A_N absolute value and shape in the
-t range from 0.0015 to 0.010GeV/c^2 with a precision better than 0.005 for
each A_N data point using a polarized atomic hydrogen gas jet target and the
100 GeV RHIC proton beam.Comment: 4 pages, 5 figure
Improving outpatient care in chronic heart failure
Despite advances in pharma and high-technology medicine, the rate of burdensome hospital admissions and mortality in patients with chronic heart failure (CHF) remains high. Over half of all admission-entailing decompensations have been repeatedly shown to emerge from non-compliance with outpatient prescriptions. Poor adherence to medication and non-medication treatment can only be broken by improving the patient’s awareness of the disease and his closer monitoring by healthcare professionals. The power of clinical and laboratory illness monitoring in line with the recommended quality criteria of medical aid in heart failure (HF) is strongly limited today by time resources available in outpatient and midwifery clinics. Meanwhile, an international and certain domestic experience has been built up to run CHF outpatient centres with involvement of specially-trained nursing and senior medical staff. Analytic evidence on such centres suggests a reduction in mortality and hospitalisation rate among the visiting patients. To combat existing drawbacks of CHF outpatient care, the National Medical Research Center of Cardiology in alliance with the Specialist Society of Heart Failure have developed the nurses’ guidelines for CHF rooms and are launching a medical staff training programme to manage CHF rooms, registry and data analysis. Furthermore, a procedure has been developed for patient routing to regional CHF outpatient cabinets that is being actively deployed in the Tyumen Region
Measurement of Analyzing Power for Proton-Carbon Elastic Scattering in the Coulomb-Nuclear Interference Region with a 22-GeV/c Polarized Proton Beam
The analyzing power for proton-carbon elastic scattering in the
coulomb-nuclear interference region of momentum transfer,
(GeV/, was measured with a 21.7
GeV/ polarized proton beam at the Alternating Gradient Synchrotron of
Brookhaven National Laboratory. The ratio of hadronic spin-flip to non-flip
amplitude, , was obtained from the analyzing power to be and .Comment: 4 pages, 4 figures and 1 table. Accepted by Physical Review Letter
Prognostic value of subclinical atherosclerosis in patients with a SCORE risk <5%: data from a 10-year follow-up
Aim. To evaluate the contribution of subclinical atherosclerosis to the stratification of patients with a SCORE risk of cardiovascular events (CVEs) <5% based on a 10-year follow-up.Material and methods. The study included 379 patients with SCORE risk of CVEs <5% (82 men, 297 women). In 2009, all patients underwent clinical examination, carotid artery (CA) ultrasound with the detection of plaques, total CA occlusion, intima-media thickness (IMT) of the common carotid artery (CCA). The plaque number was determined as the total number of all plaques in 6 following segments: both CCAs, both CCA bifurcations and both internal carotid arteries. The total stenosis was calculated as the sum of stenoses in 6 CA segments in %. In 2019, a telephone survey of patients was conducted with a questionnaire assessing the following CVEs: all-cause death, cardiovascular death, myocardial infarction (MI), stroke, myocardial revascularization, cardiovascular hospitalizations, and composite endpoint.Results. The initial patients’ age ranged from 35 to 67 years (51,1±7,5 years). Plaques from 20% to 50% were detected in 303 participants (79,94%). Over the past 10 years, there have been 5 cardiovascular deaths (1,3%), 7 MIs (1,8%), 5 cases of unstable angina (1,3%), 12 cases of myocardial revascularization (3,2%), 15 strokes (4,0%), 51 cardiovascular hospitalizations (13,5%). The proportion of patients with registered endpoints (CVE+) was 22,4% (n=85). The groups of patients with and without CVEs differed in the level of systolic blood pressure (BP) and blood triglycerides, and did not differ in the level of diastolic BP, lipid profile, glucose, heart rate, smoking status, sex, and age. In the CVE+ group, there were higher values of CCA IMT (0,65 (0,64; 0,70) mm vs 0,62 (0,62; 0,66) mm, p<0,05), total CA stenosis (102,5 (88,1; 120,8)% vs 80 (72,5; 88,1)%, p=0,01), and the CA plaque amount (4,0 (2,8; 3,9) vs 3,0 (2,6; 3,1), p=0,01), respectively. Total CA stenosis was an independent predictor of CVEs when adjusted for sex, age, systolic and diastolic BP (β=0,149; p<0,05), but not for lipid profile. A ROC-analysis revealed a cut-off point for total CA stenosis of 82,5% (AUC=0,598, 95% confidence interval 0,5243-0,673, p<0,05).Conclusion. The total CA stenosis has shown itself to be an independent predictor of CVEs in patients with a SCORE risk <5%
Challenges in QCD matter physics - The Compressed Baryonic Matter experiment at FAIR
Substantial experimental and theoretical efforts worldwide are devoted to
explore the phase diagram of strongly interacting matter. At LHC and top RHIC
energies, QCD matter is studied at very high temperatures and nearly vanishing
net-baryon densities. There is evidence that a Quark-Gluon-Plasma (QGP) was
created at experiments at RHIC and LHC. The transition from the QGP back to the
hadron gas is found to be a smooth cross over. For larger net-baryon densities
and lower temperatures, it is expected that the QCD phase diagram exhibits a
rich structure, such as a first-order phase transition between hadronic and
partonic matter which terminates in a critical point, or exotic phases like
quarkyonic matter. The discovery of these landmarks would be a breakthrough in
our understanding of the strong interaction and is therefore in the focus of
various high-energy heavy-ion research programs. The Compressed Baryonic Matter
(CBM) experiment at FAIR will play a unique role in the exploration of the QCD
phase diagram in the region of high net-baryon densities, because it is
designed to run at unprecedented interaction rates. High-rate operation is the
key prerequisite for high-precision measurements of multi-differential
observables and of rare diagnostic probes which are sensitive to the dense
phase of the nuclear fireball. The goal of the CBM experiment at SIS100
(sqrt(s_NN) = 2.7 - 4.9 GeV) is to discover fundamental properties of QCD
matter: the phase structure at large baryon-chemical potentials (mu_B > 500
MeV), effects of chiral symmetry, and the equation-of-state at high density as
it is expected to occur in the core of neutron stars. In this article, we
review the motivation for and the physics programme of CBM, including
activities before the start of data taking in 2022, in the context of the
worldwide efforts to explore high-density QCD matter.Comment: 15 pages, 11 figures. Published in European Physical Journal
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