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L’emicrania è un’affezione neurologica che è caratterizzata da ricorrenti attacchi di cefalea spesso associata ad altri sintomi, tra cui vertigini, intolleranza al movimento della testa o vertigine di rotazione. I rapporti fra emicrania e vertigine sono conosciuti da più di duemila anni, come testimonia Areteo di Cappadocia che nel 131 a.C. descriveva un paziente che “… aveva mal di testa, il suo capo roteava con senso di instabilità e negli orecchi aveva come il suono di un fiume che scorreva con grande rumore …”. Il legame tra le due entità è stato trascurato per lungo tempo ma negli ultimi due decenni un gran proliferare di pubblicazioni testimonia un rinnovato interesse internazionale sull’argomento, sebbene non vi sia ancora un comune accordo sulla definizione di vertigine emicranica (VE) e sull’inquadramento nosologico di tale en...
sovereign debt, default, bailout, creadible threat, market sanction
We test possible lensing scenarios of the JVAS system B2114+022, in which two galaxies at different redshifts (``G1'' at $z_1 = 0.3157$ and ``G2'' at $z_2 = 0.5883$) are found within 2 arcseconds of quadruple radio sources. For our investigation, we use possible lensing constraints derived from a wealth of data on the radio sources obtained with VLA, MERLIN, VLBA and EVN as well as HST imaging data on the two galaxies, which are presented in Augusto et al. In the present study, we focus on reproducing the widest separated, observationally similar radio components A and D as lensed images. We first treat G2 (which is the more distant one from the geometric centre) as a shear term, and then consider two plane lensing explicitly including G2's potential at the $z_2$ plane as the first case of two plane lens modelling. Our modelling resu...
In Guinea Bissau, the majority of university level professionals are still being trained abroad and most of them do not return to their country. This was a major incentive for creating Guinea Bissau's Medical School. An observational, cross-sectional, analytic study was conducted on the second trimester of 2007 to characterize the socio-demographic, familial and educational profile of medical students, their satisfaction levels, difficulties and expectations concerning the medicine course. A questionnaire was used and a response rate of 63% achieved (81 students). Data was analyzed using SPSS v.17 for descriptive statistics. Students are very committed to their education. They tend to decide to take the medicine course early in their lives and are influenced by their relatives. They choose to be medical doctors because they like it but...
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