| 1. |
- Aggarwal, MM, et al.
(author)
-
Centrality and transverse momentum dependence of collective flow in 158 A GeV Pb+Pb collisions measured via inclusive photons
- 2005
-
In: Nuclear Physics, Section A. - : Elsevier BV. - 0375-9474. ; 762:1-2, s. 129-146
-
Journal article (peer-reviewed)abstract
- Directed and elliptic flow of inclusive photons near mid-rapidity in 158 A GeV Pb + Pb collisions has been studied. The data have been obtained with the photon spectrometer LEDA of the WA98 experiment at the CERN SPS. The flow strength has been measured for various centralities as a function of p(T) and rapidity over 0. 18 < p(T) < 1.5 GeV/c and 2.3 < y < 2.9. The angular anisotropy has been studied relative to an event plane obtained in the target fragmentation region that shows the elliptic flow to be in-plane. The elliptic flow has also been studied using two-particle correlations and shown to give similar results. A small directed flow component is observed. Both the directed and elliptic flow strengths increase with p(T). The photon flow results are used to estimate the corresponding neutral pion flow.
|
|
| 2. |
- Aggarwal, MM, et al.
(author)
-
Centrality dependence of charged-neutral particle fluctuations in 158A (GeVPb)-Pb-208+Pb-208 collisions
- 2003
-
In: Physical Review C (Nuclear Physics). - 0556-2813. ; 67:4
-
Journal article (peer-reviewed)abstract
- Results on the study of localized fluctuations in the multiplicity of charged particles and photons produced in 158A GeV/c Pb+Pb collisions are presented for varying centralities. The charged versus neutral particle multiplicity correlations in common phase space regions of varying azimuthal sizes are analyzed by two different methods. Various types of mixed events are constructed to probe fluctuations arising from different sources. The measured results are compared to those from simulations and from mixed events. The comparison indicates the presence of nonstatistical fluctuations in both the charged particle and photon multiplicities in limited azimuthal regions. However, no correlated charged-neutral fluctuations, a possible signature of formation of disoriented chiral condensates, are observed. An upper limit on the production of disoriented chiral condensates is set.
|
|
| 3. |
- Aggarwal, MM, et al.
(author)
-
Event-by-event fluctuations in particle multiplicities and transverse energy produced in 158A GeVPb plus Pb collisions
- 2002
-
In: Physical Review C (Nuclear Physics). - 0556-2813. ; 65:5
-
Journal article (peer-reviewed)abstract
- Event-by-event fluctuations in the multiplicities of charged particles and photons, and the total transverse energy in 158A GeV Pb+Pb collisions are studied for a wide range of centralities. For narrow centrality bins the multiplicity and transverse energy distributions are found to be near perfect Gaussians. The effect of detector acceptance on the multiplicity fluctuations has been studied and demonstrated to follow statistical considerations. The centrality dependence of the charged particle multiplicity fluctuations in the measured data has been found to agree reasonably well with those obtained from a participant model. However, for photons the multiplicity fluctuations have been found to be lower compared to those obtained from a participant model. The multiplicity and transverse energy fluctuations have also been compared to those obtained from the VENUS event generator.
|
|
| 4. |
|
|
| 5. |
- Aggarwal, M M, et al.
(author)
-
Azimuthal anisotropy of photon and charged particle emission in Pb-208+Pb-208 collisions at 158 center dot A GeV/c
- 2005
-
In: European Physical Journal C. Particles and Fields. - : Springer Science and Business Media LLC. - 1434-6044. ; 41:3, s. 287-296
-
Journal article (peer-reviewed)abstract
- The azimuthal distributions of photons and charged particles with respect to the event plane are investigated as a function of centrality in Pb-208 + Pb-208 collisions at 158 (.) A GeV/c in the WA98 experiment at the CERN SPS. The anisotropy of the azimuthal distributions is characterized using a Fourier analysis. For both the photon and charged particle distributions the first two Fourier coefficients are observed to decrease with increasing centrality. The observed anisotropies of the photon distributions compare well with the expectations from the charged particle measurements for all centralities.
|
|
| 6. |
- Aggarwal, MM, et al.
(author)
-
Transverse mass distributions of neutral pions from Pb-208-induced reactions at 158 center dot A GeV
- 2002
-
In: European Physical Journal C. Particles and Fields. - : Springer Science and Business Media LLC. - 1434-6044. ; 23:2, s. 225-236
-
Journal article (peer-reviewed)abstract
- Results on transverse mass spectra of neutral pious measured at central rapidity are presented for impact parameter selected 158-A GeV Pb + Pb-1 and Pb + Nb collisions. The distributions cover the range 0.5 GeV/c(2) less than or equal to MT - Mo less than or equal to 4 GeV/c(2). The change of the spectral shape and the multiplicity with centrality is studied in detail. In going from p+p to semi-peripheral Pb+Pb collisions there is a nuclear enhancement increasing with transverse mass similar to the well known Cronin effect, while for very central collisions this enhancement appears to be weaker than expected.
|
|
| 7. |
- Herlitz, Johan, et al.
(author)
-
A description of the characteristics and outcome of patients hospitalized for acute chest pain in relation to whether they were admitted to the coronary care unit or not in the thrombolytic era
- 2002
-
In: International Journal of Cardiology. - : Elsevier Ireland Ltd. - 0167-5273 .- 1874-1754. ; 82:3, s. 279-287
-
Journal article (peer-reviewed)abstract
- bjectives: To describe the characteristics and outcome of patients hospitalized for acute chest pain in relation to whether they were admitted to the coronary care unit (CCU) or not. Design: Prospective observational study with a follow-up of 2 years. Setting: Sahlgrenska University Hospital in Göteborg, Sweden. Subjects: All patients hospitalized due to acute chest pain during 6 months. Main outcome measures: Mortality, use of medical resources, complications and previous history. Results: In all 1.592 patients were admitted to hospital for chest pain, of whom 1.136 (71%) were not directly admitted to the CCU. These patients differed from those directly admitted to the CCU, being older, including more women, having a higher prevalence of known congestive heart failure and a lower degree of initial suspicion of acute myocardial infarction (AMI). Among all patients with confirmed AMI only 58% were directly admitted to CCU. Overall, the occurrence of complications and the use of medical resources were less frequent in the patients not admitted to the CCU. The mortality during the subsequent 2 years was 16.8% for patients not admitted to the CCU and 18.5% for patients admitted to the CCU. When adjusting for various factors at baseline, patients admitted to the CCU had a relative risk of death during 2 years of follow-up being 1.23 0.87–1.73 (P=0.24) as compared with those not admitted to the CCU. Conclusion: In a Swedish university hospital, more than two thirds of patients hospitalized for acute chest pain were not directly admitted to the CCU. They differed from those admitted to the CCU in several aspects. However, their unadjusted and adjusted mortality during the subsequent 2 years did not significantly differ from those admitted to CCU.
|
|
| 8. |
- Herlitz, Johan, et al.
(author)
-
Similar risk reduction of death of extended-release metoprolol once daily and immediate release metoprolol twice daily during 5 years after myocardial infarction
- 1999
-
In: Cardiovascular Drugs and Therapy. - : Springer New York LLC. - 0920-3206 .- 1573-7241. ; 13:2, s. 127-135
-
Journal article (peer-reviewed)abstract
- The pooled results from five placebo-controlled postinfarction studies with metoprolol have shown a significant reduction in total mortality. All five studies used immediate-release metoprolol twice daily. An extended-release formulation of metoprolol for once-daily use has since been developed. The aim of the present study was to compare the two different forms of metoprolol with regard to the risk reduction of death for 5 years postinfarction and to analyze whether treatment with the beta-blocker metoprolol is associated with a reduced mortality after the introduction of modern therapies such as thrombolysis, aspirin, and ACE inhibitors. All patients discharged after an acute myocardial infarction (AMI) from Sahlgrenska University Hospital (SU) during 1986-1987 (n = 740, Period I) and during 1990-1991 (n = 1446, Period II) from both SU and Ostra Hospital, Göteborg, Sweden, were included in the study. During Period I, 56% were prescribed immediate-release metoprolol compared with 61% prescribed extended-release metoprolol during Period II. Immediate-release metoprolol was not available for outpatient use during Period II. In a multivariate analysis, all variables significantly associated with either increased or decreased postinfarction mortality during Periods I and II (univariate analysis of patient characteristics, medical history, complications during the AMI medication at discharge) studied were with Cox's proportional hazards model. Treatment with immediate-release metoprolol was significantly associated with reduced mortality over 5 years during Period I (relative risk reduction for total mortality, -34%, P = 0.003; 95% CI for RR, 0.51-0.87), and treatment with extended-release metoprolol was significantly associated with reduced mortality during Period II (-34%, P < 0.0001; 95% CI for RR, 0.53-0.82). Thrombolysis and the use of aspirin and ACE inhibitors were more frequently used during Period II. The results showed that postinfarction treatment with extended-release metoprolol given once daily was associated with a similar risk reduction of death over 5 years as immediate-release metoprolol given twice daily. The data, furthermore, indicate that the beta-blocker metoprolol is associated with a reduced risk of death after the introduction of modern therapy such as thrombolysis, aspirin, and ACE inhibitors.
|
|
| 9. |
- Hornberg, G, et al.
(author)
-
Boreal swamp forests
- 1998
-
In: BIOSCIENCE. - : AMER INST BIOLOGICAL SCI. - 0006-3568. ; 48:10, s. 795-802
-
Journal article (other academic/artistic)
|
|
| 10. |
- Karlson, BW, et al.
(author)
-
Subjective symptoms and well-being 30 months after acute chest pain in a county hospital and a city university hospital in Sweden.
- 2003
-
In: Acta Cardiologica. - : La Societe Belge de Cardiologie. - 0001-5385 .- 1784-973X. ; 58:6, s. 547-553
-
Journal article (peer-reviewed)abstract
- AIM: To compare various health-related aspects of quality of life during long-term follow-up after admission to hospital due to acute chest pain in a city university hospital and a county hospital. METHODS: This was a retrospective survey of all chest pain patients > or = 30 years of age at the Sahlgrenska University Hospital, Göteborg, covering an area with 706 inhabitants per km2 and at Uddevalla County Hospital, Uddevalla, covering an area with 34 inhabitants per km2 over a period of six months. After 30 months all patients alive were approached with a questionnaire in which they were asked about various aspects of health-related quality of life and use of medication. RESULTS: In all, 1,813 patients in the city hospital and 804 patients in the county hospital took part in the survey. The mortality and the overall proportion of patients requiring rehospitalization was similar in the two cohorts. Thirty months after onset of symptoms there was a difference between the two study populations. Patients in the county hospital smoked less frequently (p = 0.004). They tended to have less problems with chest pain at rest (p < 0.05) and dyspnoea at slight physical exercise (p = 0.01). Furthermore, they had less emotional symptoms (p = 0.003) and their state of health caused fewer problems when doing housekeeping (p = 0.008). Differences with regard to emotional symptoms and problems when doing housekeeping were particularly observed among women, whereas smoking habits differed only among men. CONCLUSION: When comparing patients admitted to hospital with acute chest pain in a city university hospital and a county hospital after 30 months some differences appeared. Patients in the county hospital appeared to suffer from less symptoms than patients in the city hospital. This was particularly observed among women. The mechanisms behind these observations are not clear.
|
|
