What Sways the Decision to Migrate? An Empirical Analysis of the Argentinean Case

Labour mobility among different regions within a country is known as one of the mechanisms that can contribute to the adjustment of regional labour markets. This will only occur on the condition that the individual’s responses to labour earnings differentials are sensitive enough. This paper provides with empirical evidence for Argentina concerning the analysis of the individual’s decision to migrate, and in particular, the response of the individuals to regional wage differentials, based on individual data. A random effects logit for panel data models the migration decision. The real expected income was found to signigficantly influence the probability of migrating.Migration Decision, Income, Random Effects Logit, Argentina

Cavity Flows: Change Of Regime In The Ratio Between The Pressure And Kinetic Energy Flows Across The Cavity Mouth

The incompressible flow in a rectangular cavity located along one of the wall of a plane channel is studied. The focus is put on the flow in the cavity and on the energy dynamics, in particular on the pressure and kinetic energy exchange across the interface surface between the cavity and the channel. Moreover, using the incompressible formulation of fluid equations, we look for observable properties that can be associated to acoustic emission which is normally observed in this kind of flow beyond a critical value of Reynolds numbe

Human tularemia in Italy. Is it a re-emerging disease?

In order to evaluate whether tularemia is re-emerging in Italy, data on mortality and morbidity (obtained by the National Institute of Statistics; ISTAT), Italian cases described in the scientific literature and data concerning hospitalizations for tularemia (obtained by the National Hospital Discharge Database) were analysed. From 1979 to 2010, ISTAT reported 474 cases and no deaths. The overall number of cases obtained from the literature review was at least 31% higher than that reported by ISTAT. Moreover, the number of cases reported by ISTAT was 3·5 times smaller than hospitalized cases. The real frequency of the disease should be carefully investigated and taken into account in order to implement specific prevention measures.Tularemia is a contagious infectious disease due to Francisiella tularensis that can cause serious clinical manifestations and significant mortality if untreated. Although the frequency and significance of the disease has diminished over the last decades in Central Europe, over the past few years, there is new evidence suggesting that tularemia has re-emerged worldwide. To know the real epidemiology of the disease is at the root of correct control measures. In order to evaluate whether tularemia is re-emerging in Italy, data on mortality and morbidity (obtained by the National Institute of Statistics; ISTAT), Italian cases described in the scientific literature and data concerning hospitalizations for tularemia (obtained by the National Hospital Discharge Database) were analysed. From 1979 to 2010, ISTAT reported 474 cases and no deaths. The overall number of cases obtained from the literature review was at least 31% higher than that reported by ISTAT. Moreover, the number of cases reported by ISTAT was 3·5 times smaller than hospitalized cases. In Italy tularemia is sporadic, rarely endemic and self-limiting; but, although the trend of reported tularemia does not support the hypothesis of a re-emerging disease, the study demonstrates a wide underreporting of the disease. The real frequency of the disease should be carefully investigated and taken into account in order to implement specific prevention measures

Neutrino Spectrum Distortion Due to Oscillations and its BBN Effect

We study the distortion of electron neutrino energy spectrum due to oscillations with the sterile neutrino nu_e nu_s, for different initial populations of the sterile state delta N_s at the onset of oscillations. The influence of this spectrum distortion on Big Bang Nucleosynthesis is analyzed. Only the case of an initially empty sterile state was studied in previous publications. The primordial abundance of He-4 is calculated for all possible delta N_s: 0<= delta N_s<= 1 in the model of oscillations, effective after electron neutrino decoupling, for which the spectrum distortion effects on the neutron--proton transitions are the strongest. It is found that the spectrum distortion effect may be the dominant one not only in the case of small delta N_s, but also in the case of big initial population of nu_s. For example, in the resonant case it may play a considerable role even for very big delta N_s ~ 0.8.Comment: 13 pages, 2 figures, a revised shortened version, main results unchanged, references updated, typos correcte

Comparative study of total phenolic content and radical scavenging activity of conventionally and organically grown herbs

The aim of the present study was to measure the relative phenolic content in commonly available conventionally and organically grown herbs and to evaluate their antioxidant capacity. Sage (Salvia officinalis), lemon balm (Melissa officinalis) and peppermint (Mentha x piperita) leaves, corriander (Corriandrum sativum) and fennel (Foeniculum vulgare) seeds were used in the present investigation. Total phenolic content (TPhC), measured by Folin-Ciocalteu method, and radical scavenging activity (RSA), using DPPH method were determined in infusions prepared from above mentioned herbs. TPhC ranged from 75.9 to 1126.5 gallic acid equivalents (GAE) mg/l infusion and RSA – from 7.03 to 91.65%. The obtained data also showed that infusions prepared from organically grown sage, peppermint and lemon balm were slightly higher than those obtained from conventionally grown herbs