28 research outputs found
Comments on the compatibility of thermodynamic equilibrium conditions with lattice propagators
In this paper the compatibility is analyzed of the non-perturbative equations
of state of quarks and gluons arising from the lattice with some natural
requirements for self-gravitating objects at equilibrium: the existence of an
equation of state (namely, the possibility to define the pressure as a function
of the energy density), the absence of superluminal propagation and Le
Chatelier's principle. It is discussed under which conditions it is possible to
extract an equation of state (in the above sense) from the non-perturbative
propagators arising from the fits of the latest lattice data. In the quark
case, there is a small but non-vanishing range of temperatures in which it is
not possible to define a single-valued functional relation between density and
pressure. Interestingly enough, a small change of the parameters appearing in
the fit of the lattice quark propagator (of around 10~\%) could guarantee the
fulfillment of all the three conditions (keeping alive, at the same time, the
violation of positivity of the spectral representation, which is the expected
signal of confinement). As far as gluons are concerned, the analysis shows very
similar results. Whether or not the non-perturbative quark and gluon
propagators satisfy these conditions can have a strong impact on the estimate
of the maximal mass of quark stars.Comment: 24 pages; 12 figures. Title slightly changed and improved discussion.
Version accepted for publication on European Physical Journal
Bilateral benign multinodular goiter: what is the adequate surgical therapy? A review of literature
Benign multinodular goiter (BMNG) is the most common endocrine disease requiring surgery. During the last few years a more aggressive approach has become the trend for bilateral BMNG treatment
Allergic Rhinitis and its Impact on Asthma (ARIA) Phase 4 (2018) : Change management in allergic rhinitis and asthma multimorbidity using mobile technology
Allergic Rhinitis and its Impact on Asthma (ARIA) has evolved from a guideline by using the best approach to integrated care pathways using mobile technology in patients with allergic rhinitis (AR) and asthma multimorbidity. The proposed next phase of ARIA is change management, with the aim of providing an active and healthy life to patients with rhinitis and to those with asthma multimorbidity across the lifecycle irrespective of their sex or socioeconomic status to reduce health and social inequities incurred by the disease. ARIA has followed the 8-step model of Kotter to assess and implement the effect of rhinitis on asthma multimorbidity and to propose multimorbid guidelines. A second change management strategy is proposed by ARIA Phase 4 to increase self-medication and shared decision making in rhinitis and asthma multimorbidity. An innovation of ARIA has been the development and validation of information technology evidence-based tools (Mobile Airways Sentinel Network [MASK]) that can inform patient decisions on the basis of a self-care plan proposed by the health care professional.Peer reviewe
Predictive factors of intestinal necrosis in acute mesenteric ischemia
Objectives. Acute mesenteric ischemia (AMI) is a gastrointestinal and vascular emergency in which the detection of patients requiring intestinal resection is man- datory. Methods. Registered data of 55 consecutive patients admitted to our center between January 2010 and Decem- ber 2016 that underwent an explorative laparotomy for a suspected diagnosis of irreversible transmural intestinal necrosis (ITIN) were analyzed. Demographic, clinical, laboratory and CT findings were statistically analyzed in order to search predictive factors of ITIN and their correla- tion to its clinical spectre. Results. Tobacco use was the most statistically signifi- cant (p 2) and the three main CT findings (decreased bowel wall enhancement, bowel loop dilation and demonstrated vessel occlusion) were strongly associated with ITIN (p values: 0.001, 0.007, 0.0013, 0.0005). Only serum lactate levels>2 mmol/L resulted as statistically significant as pre- dictive factors of ITIN in multivariate analysis using logis- tic regression (OR 49.66 and p-value 0.0021). Conclusion. Our univariate and multivariate analysis iden- tified multiple factors (Serum lactate levels ˃ 2mmol/L,Organ failure, CT signs) that could suggest patients that require a surgical approach for ITIN