The study of open charm meson production provides an efficient tool for the investigation of the properties of hot and dense matter formed in nucleus–nucleus collisions. The interpretation of the ...existing di-muon data from the CERN SPS suffers from a lack of knowledge on the mechanism and properties of the open charm particle production. Due to this, the heavy-ion programme of the NA61/SHINE experiment at the CERN SPS has been extended by precise measurements of charm hadrons with short lifetimes. A new Vertex Detector for measurements of the rare processes of open charm production in nucleus–nucleus collisions was designed to meet the challenges of track registration and high resolution in primary and secondary vertex reconstruction. A small-acceptance version of the vertex detector was installed in 2016 and tested with Pb + Pb collisions at 150
A
GeV
/
c
. It was also operating during the physics data taking on Xe + La and Pb + Pb collisions at 150
A
GeV
/
c
conducted in 2017 and 2018. This paper presents the detector design and construction, data calibration, event reconstruction, and analysis procedure.
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DOBA, IZUM, KILJ, NUK, PILJ, PNG, SAZU, SIK, UILJ, UKNU, UL, UM, UPUK
2.
Transverse and longitudinal dynamics at RHIC Staszel, P
Journal of physics. G, Nuclear and particle physics,
04/2008, Volume:
35, Issue:
4
Journal Article, Conference Proceeding
Not Always as It Seems: A Case of Ascending Paralysis Staszel, Joseph P; Miknevich, MaryAnn
American journal of physical medicine & rehabilitation,
2020-March, 2020-03-00, 2020-3-00, Volume:
99, Issue:
3
Journal Article
Peer reviewed
ABSTRACTAlthough generally presenting as a chronic, progressive peripheral neuropathy, we present a case of acute alcoholic neuropathy initially mistaken for acute Guillain-Barré syndrome. ...Electrodiagnostic evaluation of alcoholic neuropathy reveals an axonal neuropathy and may be complicated by demyelination if comorbid nutritional deficiencies are present. This is in contrast to the significant demyelination classically associated with Guillain-Barré syndrome. F waves, which are absent or prolonged in Guillain-Barré syndrome, are unaffected in alcoholic neuropathy. Further evaluation with lumbar puncture demonstrates normal protein and white blood cell counts in alcoholic neuropathy, as opposed to albuminocytologic dissociation characteristically present in acute Guillain-Barré syndrome.
Charmonium production in heavy ion collisions is considered as an important diagnostic probe for studying the phase diagram of strongly interacting matter for potential phase transitions. The ...interpretation of existing data from the CERN SPS is hampered by a lack of knowledge on the properties of open charm particle production in the fireball. Moreover, open charm production in heavy ion collisions by itself is poorly understood. To overcome this obstacle, the NA61/SHINE was equipped with a Small Acceptance Vertex Detector (SAVD), which is predicted to make the experiment sensitive to open charm mesons produced in A-A collisions at the SPS top energy. This paper will introduce the concept and the hardware of the SAVD. Moreover, first running experience as obtained in a commissioning run with a 150
A
GeV/
c
Pb+Pb collision system will be reported.
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IZUM, KILJ, NUK, PILJ, PNG, SAZU, UL, UM, UPUK
Charmonium production in heavy ion collisions is considered as an important diagnostic probe for studying the phase diagram of strongly interacting matter for potential phase transitions. The ...interpretation of existing data from the CERN SPS is hampered by a lack of knowledge on the properties of open charm particle production in the fireball. Moreover, open charm production in heavy ion collisions by itself is poorly understood. To overcome this obstacle, the NA61/SHINE was equipped with a Small Acceptance Vertex Detector (SAVD), which is predicted to make the experiment sensitive to open charm mesons produced in A-A collisions at the SPS top energy. This paper will introduce the concept and the hardware of the SAVD. Moreover, first running experience as obtained in a commissioning run with a 150 AGeV/c Pb+Pb collision system will be reported.
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Available for:
IZUM, KILJ, NUK, PILJ, PNG, SAZU, UL, UM, UPUK
An extensive experimental survey of the features of the disassembly of a small quasiprojectile system with A{approx}36, produced in the reactions of 47 MeV/nucleon {sup 40}Ar + {sup 27}Al, {sup ...48}Ti, and {sup 58}Ni, has been carried out. Nuclei in the excitation energy range of 1-9 MeV/nucleon have been investigated employing a new method to reconstruct the quasiprojectile source. At an excitation energy {approx}5.6 MeV/nucleon many observables indicate the presence of maximal fluctuations in the deexcitation processes. These include the normalized second moments of the Campi plot and normalized variances of the distributions of order parameters such as the atomic number of the heaviest fragment Z{sub max} and the total kinetic energy. The evolution of the correlation of the atomic number of the heaviest fragment with that of the second heaviest fragment and a bimodality test are also consistent with a transition in the same excitation energy region. The related phase separation parameter, S{sub p}, shows a significant change of slope at the same excitation energy. In the same region a {delta}-scaling analysis for of the heaviest fragments exhibits a transition to {delta} = 1 scaling, which is predicted to characterize a disordered phase. The fragment topological structure shows that the rank-sorted fragments obey Zipf's law at the point of largest fluctuations, providing another indication of a liquid gas phase transition. The Fisher droplet model critical exponent {tau} {approx} 2.3 obtained from the charge distribution at the same excitation energy is close to the critical exponent of the liquid gas phase transition universality class. The caloric curve for this system shows a monotonic increase of temperature with excitation energy and no apparent plateau. The temperature at the point of maximal fluctuations is 8.3{+-}0.5 MeV. Taking this temperature as the critical temperature and employing the caloric curve information we have extracted the critical exponents {beta},{gamma}, and {sigma} from the data. Their values are also consistent with the values of the universality class of the liquid gas phase transition. Taken together, this body of evidence strongly suggests a phase change in an equilibrated mesoscopic system at, or extremely close to, the critical point.
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CMK, CTK, FMFMET, IJS, NUK, PNG, UM
Achieving equitable medical care for people with disabilities is a complex challenge with emphasis often placed on the need for improved physician knowledge and cultural competence. Physical medicine ...and rehabilitation (PM&R) is a specialty dedicated to maximizing patient function, where a focus on working with and learning from patients with complex disabilities informs physician training and patient care.
The purpose of this study was to assess barriers to equitable care in PM&R clinics through a structural checklist and semi-structured interviews with clinic staff and physicians.
We used qualitative analysis with a grounded theory approach to develop a unified explanation of how existing clinic processes and provider attitudes affect equitable access to medical care.
We found physicians comfortable with and respectful of patient differences who described leveraging unpaid time and creativity to navigate structural, resource, and awareness barriers. Staff and physicians described current barriers as negatively affecting quality of care, clinic efficiency, and, in some cases, patient and staff safety.
Our results suggest that high levels of physician disability-related knowledge and cultural competence may be insufficient to the challenge of achieving equitable care.
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GEOZS, IJS, IMTLJ, KILJ, KISLJ, NLZOH, NUK, OILJ, PNG, SAZU, SBCE, SBJE, UILJ, UL, UM, UPCLJ, UPUK, ZAGLJ, ZRSKP
The BRAHMS measured proton-to-pion ratios in Au+Au and p+p collisions at
s
N
N
=
62.4
GeV
and
s
N
N
=
200
GeV
are presented as a function of transverse momentum and collision centrality within ...the pseudo-rapidity range
0
⩽
η
⩽
3.8
. The results for Au+Au at
s
N
N
=
200
GeV
are compared with predictions from models which incorporate hydro-dynamics, hadron rescattering and jet production, in the
η interval covered. In Au+Au collisions at
s
N
N
=
200
GeV
,
η
≈
2.2
, and at
s
N
N
=
62.4
GeV
,
η
=
0
, the bulk medium can be characterized by the common value of
μ
B
≈
65
MeV
. The
p
/
π
+
(
p
T
)
ratios measured for these two selections display a striking agreement in the
p
T
range covered (up to 2.2 GeV/c). At a collision energy of 62.4 GeV and at forward pseudo-rapidity we found a crossing point of
p
/
π
+
ratios measured in central and semi-peripheral Au+Au and in p+p reactions. The crossing occurs in the narrow
η bin around value of 3.2, simultaneously in the whole covered
p
T
range (
0.3
GeV/c
<
p
T
<
1.8
GeV/c
).
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GEOZS, IJS, IMTLJ, KILJ, KISLJ, NUK, OILJ, PNG, SAZU, SBCE, SBJE, UL, UM, UPCLJ, UPUK
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