1,021 research outputs found

    A COLLABORATIVE MODEL FOR VIRTUAL ENTERPRISE

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    Collaborative process characteristics have three dimensions: actors, activities and action’s logic. The aim of this paper is to present a virtual portal’s model that helps managing consortiums. Our model based on dynamic e-collaboration and it has a modular structure, multilayer approach. System’s functionality of virtual enterprise is collaborative model is concern on users’ login, based on role and access control, searching and providing distributed resources, accessibility, metadata management and improved information’s management. Our proposal for developing solution offers a functional architecture of a virtual enterprise using dynamic e-collaboration and shared space.dynamic e-collaboration, multilayer solution, modular approach

    A HIERACHICAL MODEL FOR MEDICAL REGISTRATIONS

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    The aim of this paper is to improve solutions for developing and improving medical and pharmaceutical services. We made a SWOT analyze of SIUI in order to build a document management system and create medical registration papers, based on collaborative editing and international medical standard. This model was focused on hierarchical decomposition of PHR and EHR records, using modular solution, which stores all data in XML files. It requires a system that is simple to use and allows users to focus their efforts on the content rather that on the technology used to create it. This approach allows a great flexibility in handling document and user interaction.medical registrations, HME standards, PHR, SIUI, hierarchical decomposition

    Particularitățile răspunsului inflamator în evoluția post-infarct

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    În cadrul acestui studiu clinico-fundamental s-a evaluat substratul celular al răspunsului inflamator în miocard după IMA, precum și dinamica markerilor principali ai inflamației la pacienții cu STEMI pe o perioadă de 12 luni. Evoluția IMA excelează prin acumularea celulelor promotoare a inflamației în miocard, care evaluează într-un anumit format cronologic: neutrofilele (48 de ore), macrofagele M1 (72 de ore) și macrofagele M2 (7 zile), fenomene asociate de creșterea expresiei TNF-α cu o ascensiune cantitativă de circa 170 ori pe perioada 24 ore–5 zile. Dinamica markerilor circulanți la pacienții cu STEMI se impune prin majorarea progresivă a IL-1, IL-6, FLA2, TNF-α și PCRhs în primele 72 de ore de la debutul IMA, precum și micșorarea semnificativă a IL-4. Tendința de redresare a markerilor se decelează după perioada de 14 zile, preia proporții notabile după 6 luni, iar la distanța de 12 luni conținutul seric al IL-4 rămâne semnificativ depreciat, iar PCRhs nu coboară sub valoarea de 6,0 mg/L. Perioada de 3 luni a evoluției post-infarct iminentă prin finalizarea sintezei colagenului fibrilar de tip I se caracterizează prin niveluri circulante semnificativ majorate ale colagenazei 2 (MMP8) și SDF-1

    Part One: Extracellular Vesicles as Valuable Players in Diabetic Cardiovascular Diseases

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    Extracellular vesicles (EVs) are particles released in the extracellular space from all cell types in physiological and pathological conditions and emerge as a new way of cell-cell communication by transferring their biological contents into target cells. The levels and composition of circulating EVs differ from a normal condition to a pathological one, making them real circulating biomarkers. EVs have a very complex contribution in both health and disease, most likely in relationship between diabetes and cardiovascular disease. The involvement of EVs to the development of cardiovascular complications in diabetes remains an open discussion for therapists. Circulating EVs may offer a continuous access path to circulating information on the disease state and a new perspective in finding a correct diagnosis, in estimating a prognosis and also in applying an effective therapy. Besides their role as biomarkers and targets for therapy, EVs can be exploited as biological tools in influencing the different processes affected in diabetic cardiovascular diseases. This chapter will summarize the current knowledge about EVs as biological vectors modulating diabetic cardiovascular diseases, including atherosclerosis, coronary artery disease, and peripheral arterial disease. Finally, we will point out EVs’ considerable value as clinical biomarkers, therapeutic targets, and potential biomedical tools for the discovery of effective therapy in diabetic cardiovascular diseases

    Part Two: Extracellular Vesicles as a Risk Factor in Neurodegenerative Diseases

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    Extracellular vesicles (EVs) involved in the intercellular communication hold cell-specific cargos that contain proteins, various species of RNA and lipids. EVs are emerging as powerful tools for diagnosis and therapy in most diseases but little is known about their role in central nervous system (CNS) physiology or disease. Considering the extraordinary intricated cytoarchitecture of the brain, the implication of EVs in its pathophysiology is difficult to establish. Blood circulating EVs derived from local or distant vascular cells or EVs released from brain into the cerebrospinal fluid (CSF) may influence the brain activity. EVs released in the blood stream from various tissues may influence the brain by passing through the blood-brain barrier (BBB) or through choroid plexus. Since the choroid plexus has also a clearance role, it might be possible that EVs carrying brain abnormal proteins to pass into the blood can be detected. Thus, considering that EVs are specialized cargos bearing combined signals between cells, they might be an interesting therapy target in the future for both regulating neurogenesis and abnormal protein clearance. We present here data gathered about EVs that may influence the CNS functionality and be involved in most common neurodegenerative diseases

    Azimuthal anisotropy of charged jet production in root s(NN)=2.76 TeV Pb-Pb collisions

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    We present measurements of the azimuthal dependence of charged jet production in central and semi-central root s(NN) = 2.76 TeV Pb-Pb collisions with respect to the second harmonic event plane, quantified as nu(ch)(2) (jet). Jet finding is performed employing the anti-k(T) algorithm with a resolution parameter R = 0.2 using charged tracks from the ALICE tracking system. The contribution of the azimuthal anisotropy of the underlying event is taken into account event-by-event. The remaining (statistical) region-to-region fluctuations are removed on an ensemble basis by unfolding the jet spectra for different event plane orientations independently. Significant non-zero nu(ch)(2) (jet) is observed in semi-central collisions (30-50% centrality) for 20 <p(T)(ch) (jet) <90 GeV/c. The azimuthal dependence of the charged jet production is similar to the dependence observed for jets comprising both charged and neutral fragments, and compatible with measurements of the nu(2) of single charged particles at high p(T). Good agreement between the data and predictions from JEWEL, an event generator simulating parton shower evolution in the presence of a dense QCD medium, is found in semi-central collisions. (C) 2015 CERN for the benefit of the ALICE Collaboration. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).Peer reviewe

    Production of He-4 and (4) in Pb-Pb collisions at root(NN)-N-S=2.76 TeV at the LHC

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    Results on the production of He-4 and (4) nuclei in Pb-Pb collisions at root(NN)-N-S = 2.76 TeV in the rapidity range vertical bar y vertical bar <1, using the ALICE detector, are presented in this paper. The rapidity densities corresponding to 0-10% central events are found to be dN/dy4(He) = (0.8 +/- 0.4 (stat) +/- 0.3 (syst)) x 10(-6) and dN/dy4 = (1.1 +/- 0.4 (stat) +/- 0.2 (syst)) x 10(-6), respectively. This is in agreement with the statistical thermal model expectation assuming the same chemical freeze-out temperature (T-chem = 156 MeV) as for light hadrons. The measured ratio of (4)/He-4 is 1.4 +/- 0.8 (stat) +/- 0.5 (syst). (C) 2018 Published by Elsevier B.V.Peer reviewe

    Forward-central two-particle correlations in p-Pb collisions at root s(NN)=5.02 TeV

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    Two-particle angular correlations between trigger particles in the forward pseudorapidity range (2.5 2GeV/c. (C) 2015 CERN for the benefit of the ALICE Collaboration. Published by Elsevier B. V.Peer reviewe

    Event-shape engineering for inclusive spectra and elliptic flow in Pb-Pb collisions at root(NN)-N-S=2.76 TeV

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    Elliptic flow of muons from heavy-flavour hadron decays at forward rapidity in Pb-Pb collisions at root s(NN)=2.76TeV

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    The elliptic flow, v(2), of muons from heavy-flavour hadron decays at forward rapidity (2.5 <y <4) is measured in Pb-Pb collisions at root s(NN)= 2.76TeVwith the ALICE detector at the LHC. The scalar product, two- and four-particle Q cumulants and Lee-Yang zeros methods are used. The dependence of the v(2) of muons from heavy-flavour hadron decays on the collision centrality, in the range 0-40%, and on transverse momentum, p(T), is studied in the interval 3 <p(T)<10 GeV/c. A positive v(2) is observed with the scalar product and two-particle Q cumulants in semi-central collisions (10-20% and 20-40% centrality classes) for the p(T) interval from 3 to about 5GeV/c with a significance larger than 3 sigma, based on the combination of statistical and systematic uncertainties. The v(2) magnitude tends to decrease towards more central collisions and with increasing pT. It becomes compatible with zero in the interval 6 <p(T)<10 GeV/c. The results are compared to models describing the interaction of heavy quarks and open heavy-flavour hadrons with the high-density medium formed in high-energy heavy-ion collisions. (C) 2015 CERN for the benefit of the ALICE Collaboration. Published by Elsevier B.V.Peer reviewe
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