563 research outputs found
Strangeness Production in pp,pA,AA Interactions at SPS Energies.HIJING Approach
In this report we have made a systematic study of strangeness production in
proton-proton(pp),proton-nucleus(pA) and nucleus- nucleus(AA) collisions at
CERN Super Proton Synchroton energies, using \\ (version ). Numerical results for mean
multiplicities of neutral strange particles ,as well as their ratios to
negatives hadrons() for
p-p,nucleon-nucleon(N-N),\,\,p-S,\,\,p-Ag,\,\,p-Au('min. bias')collisions and
p-Au,\,\,S-S,\,\,S-Ag,\,\,S-Au ('central')collisions are compared to
experimental data available from CERN experiments and also with recent
theoretical estimations given by others models. Neutral strange particle
abundances are quite well described for p-p,N-N and p-A interactions ,but are
underpredicted by a factor of two in A-A interactions for
in symmetric collisions(S-S,\,\,Pb-Pb)and for
in asymmetric ones(S-Ag,\,\,S-Au,\,\,S-W). A
qualitative prediction for rapidity, transverse kinetic energy and transverse
momenta normalized distributions are performed at 200 GeV/Nucleon in
p-S,S-S,S-Ag and S-Au collisions in comparison with recent experimental data.
HIJING model predictions for coming experiments at CERN for S-Au, S-W and Pb-Pb
interactions are given. The theoretical calculations are estimated in a full
phase space.Comment: 33 pages(LATEX),18 figures not included,available in hard copy upon
request , Dipartamento di Fisica Padova,report DFPD-94-NP-4
Predictions for p+Pb at 4.4A TeV to Test Initial State Nuclear Shadowing at energies available at the CERN Large Hadron Collider
Collinear factorized perturbative QCD model predictions are compared for p+Pb
at 4.4A TeV to test nuclear shadowing of parton distribution at the Large
Hadron Collider (LHC). The nuclear modification factor (NMF),
R_{pPb}(y=0,p_T<20 GeV/c) = dn_{p Pb} /(N_{coll}(b)dn_{pp}), is computed with
electron-nucleus (e+A) global fit with different nuclear shadow distributions
and compared to fixed Q^2 shadow ansatz used in Monte Carlo Heavy Ion Jet
Interacting Generator (HIJING) type models. Due to rapid DGLAP reduction of
shadowing with increasing Q^2 used in e+A global fit, our results confirm that
no significant initial state suppression is expected (R_{pPb} (p_T) = 1 \pm
0.1) in the p_T range 5 to 20 GeV/ c. In contrast, the fixed Q^2 shadowing
models assumed in HIJING type models predict in the above p_T range a sizable
suppression, R_{pPb} (p_T) = 0.6-0.7 at mid-pseudorapidity that is similar to
the color glass condensate (CGC) model predictions. For central (N_{coll} = 12)
p+ Pb collisions and at forward pseudorapidity (\eta = 6) the HIJING type
models predict smaller values of nuclear modification factors (R_{pPb}(p_T))
than in minimum bias events at mid-pseudorapidity (\eta = 0). Observation of
R_{pPb}(p_T= 5-20 GeV/c) less than 0.6 for minimum bias p+A collisions would
pose a serious difficulty for separating initial from final state interactions
in Pb+Pb collisions at LHC energies.Comment: Revised version accepted for publication; Phys. Rev. C, in press, 16
pages, 4 figures, text modifications, added references, new figure 4, revtex
Strong Color Field Baryonic Remnants in Nucleus-Nucleus Collisions at 200A GeV
The effects of strong color electric fields (SCF) on the baryon production at
RHIC are studied in the framework of HIJING/B\=B (v2.0) model. The particle
species dependence of nuclear modification factors (NMF) are analyzed for Au+Au
collisions at 200A GeV. A doubling of the string tension leading to a
modification of the strangeness suppression according to Schwinger mechanism is
shown to provide an alternate explanation to coalescence models for the
interpretation of the observed baryon and meson production at moderate
and results in a predicted enhancement in the (multi)strange (anti)hyperon
production.Comment: 6 pages, Latex(Revtex), 4 figures;Added new references, one figure,
text slightly modified. final version accepted for publication in Pnys. Rev.
C (october,05
Universal Mass Dependence for Particle Production Rates in , and Collisions from the Quark-Gluon Plasma Perspective
It is demonstrated that universal mass dependence for meson and baryon
inclusive cross-sections advocated recently in annihilation and in
hadronic reactions is consistent also with heavy ion collisions data and can
therefore be used as a reference for quark-gluon plasma studies.Comment: LaTex file, 8 pages, hard copies of 3 (multiple) figures available on
request to [email protected] or [email protected]. PROCSLA.STY file
appended at the end of the LaTeX file for convenienc
Do Search for Dibaryonic De - Excitations in Relativistic Nuclear Reactions
Some odd characteristics are observed in the single particle distributions
obtained from interactions at momenta which are
explained as the manifestation of a new mechanism of strangeness production via
dibaryonic de-excitations. A signature of the formation of hadronic and
baryonic clusters is also reported. The di-pionic signals of the dibaryonic
orbital de-excitations are analyzed in the frame of the MIT - bag Model and a
Monte Carlo simulation.The role played by the dibaryonic resonances in
relativistic nuclear collisions could be a significant one.
Key words: Relativistic nuclear interactions negative pions, negative kaons,
di-pions , streamer chamber, dibaryons, MIT - bag model
PACS codes: 25.75.+r,14.40.Aq,14.20.Pt,12.40.AsComment: 17 pages,LATEX, preprint ICTP -243 1993,figures available by reques
A Mediterranean-type diet is associated with better metabolic profile in urban Polish adults: Results from the HAPIEE study
The aim of this study was to evaluate the relationship between adherence to a Mediterranean-type diet and metabolic syndrome (MetS) in the Polish arm of the Health, Alcohol and Psychosocial factors In Eastern Europe (HAPIEE) cohort study
Posttramatic pneumomediastinum
Catedra de anatomie topografică și chirurgie operatorie, Laboratorul de chirurgie hepato-bilio-pancreatică, Catedra de chirurgie nr. 1 „N. Anestiadi”, Universitatea de Stat de Medicină şi Farmacie „Nicolae Testemiţanu”, Chişinău, Republica Moldova, Conferința Ştiinţifică Internaţională ”Probleme actuale ale morfologiei” dedicată celor 70 de ani de la fondarea Universității de Stat de Medicină și Farmacie „Nicolae Testemiţanu”, Chişinău, 15-16 octombrie 2015Abstract
Background: Minor blunt neck injury trauma is a relatively common condition which can be potentially life-threatening in only rare circumstances. Pneumomediastinum may develop in up to 10% patients who have sustained blunt cervical
or thoracic trauma and may be a significant cause of morbidity and mortality in affected individuals because of the associated damage to the oesophagus, larynx or trachea. Management of this condition varies from conservative approach with
close observation and antibiotherapy to surgical intervention, depending on the extent and severity of aerodigestive injuries.
Conclusions: A blunt neck trauma accompanied by subcutaneous emphysema and pneumomediastinum secondary
to an accident, its radiologic appearance, clinical presentation, and the options for initial management in the emergency
department need a special attention
Baryon Junction Loops in HIJING/B\=Bv2.0 and the Baryon/Meson Anomaly at RHIC
A new version, v2.0, of the HIJING/B\=B Monte Carlo nuclear collision event
generator is introduced in order to explore further the possible role of baryon
junctions loops in the baryon/meson anomaly (2 5 GeV/c) observed in
200A GeV Au+Au reactions at RHIC. We show that junction loops with an enhanced
intrinsic GeV/c transverse momentum kick may provide a partial
explanation of the anomaly as well as other important baryon stopping
observables.Comment: 27 pages, Latex(revtex), 8 figure
Anatomo-clinical aspects in hirudotherapy
Catedra de anatomie topografică și chirurgie operatorie, Universitatea de Stat de Medicină şi Farmacie „Nicolae Testemiţanu”, Chişinău, Republica Moldova, Conferința Ştiinţifică Internaţională ”Probleme actuale ale morfologiei” dedicată celor 70 de ani de la fondarea Universității de Stat de Medicină și Farmacie „Nicolae Testemiţanu”, Chişinău, 15-16 octombrie 2015Abstract
Background: According to the literature, the history of hirudotherapy includes several millenniums. With the
development of science, researches in medicine have resulted in rapid and quite good treatment of acute diseases. In this
way, in a short period of time a strong pharmaceutical industry, which proposes large amounts of synthetic drugs,has been
developed. As a result, the share of natural remedies has considerably decreased, and the specialists of this field were essentially distressed. Today we observe that modern medicine rediscovers hirudotherapy. The leeches possess a mechanism
that locks the system of hemostasis of the donor, represented by biologically active substances, secreted by the salivary
glands. Due to these substances, hirudotherapy has many therapeutic effects. As mentioned before, hirudotherapy acts on
the human body through general, local and bioenergetical effects.
Conclusions: First of all, zonality of curative effect is determined by regional adjusting of blood and lymphatic circulation. Therefore, the local action is the most important manifestation of hirudotherapy. The general action is based on
the application of leeches in certain reflexogenic areas, arranged to the skin, and in regions of anastomoses between the
deep and superficial venous system. In this context, the role of clinical anatomy is essential in determination of the points
and areas where leeches are applied
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