L'evento

Il concetto di evento \ue8 di grande rilievo per gli studiosi delle scienze storiche, anche se non \ue8 tra i pi\uf9 indagati, essendo stato, per lo pi\uf9 oggetto di interesse per i filosofi e per i metodologi delle scienze sociali. Da vari angoli disciplinari e culturali si propone una nuova tematizzazione del concetto a pi\uf9 voci, accompagnata dalla traduzione italiana di un brevissimo trattato di Plutarco di Cherone

Evaluation of adherence to antiretroviral therapy in Italian HIV patients

We studied factors associated with treatment adherence in 88 male and 21 female adults (age range, 24-65 years) with HIV infection undergoing therapy with HIV-1 protease inhibitors (PIS) in Italy. Data on sociodemographic variables, clinical and psychological symptoms, treatment compliance, physician/patient relationship, and psychosocial characteristics were obtained by means of semistructured interviews. Every subject also compiled two self-report questionnaires: Coping Orientations to Problem Experiences (COPE) and Medical Outcomes,Study-HIV (MOS-HIV) in order to evaluate the use of coping strategies and quality of life. We found a high rate of adherence to HIV therapies (almost 90% of patients had taken at least 80% of medication in the previous 7 days). No significant differences were found between adherence and nonadherence groups as measured by self-report. Few significant differences were found when data laboratory were used. When a Bonferroni corrected p level, of <0.001 was used, only a comparison on Mental Disengagement subscale of COPE was statistically significant

Efisio Marini. Reliquie laiche di patria e amore

Quest’opera racconta la figura di Efisio Marini, la sua gigantesca statura e la sua affascinante opera. Una figura sospesa tra la scienza e l’occulto, tra il mistero e l’esperienza, con elementi artistici di straordinario interesse

Controlled-growth free-radical polymerization of methacrylate esters: reversible chain transfer versus reversible termination

Several processes for controlled growth free radical polymerization are contrasted with respect to reaction mechanism and their particular advantages and limitations. Kinetic simulation is used to examine relationships between reaction conditions, the significance of various side reactions, and the evolution of molecular the weight distribution. Expressions used to calculate molecular weights and polydispersities for the various mechanisms are reported Alkoxyamine-initiated polymerizations of methacrylate esters give only low conversions (10-40%, dependent on particular nitroxide and reaction conditions). Polymerization ceases due to a build up in the nitroxide concentration and the initially formed alkoxyamine is ultimately converted to an unsaturated macromonomer. The conversion, molecular weight and polydispersity are determined by the rate and equilibrium constants and combination:disproportionation ratio associated with the nitroxide - propagating radical reaction. Polymerization of methacrylate monomers in the presence of methacrylate macromonomers provides a viable method for controlled growth polymerization to high conversions. However, narrow polydispersities are difficult to achieve by solution polymerization due to a slow rate of exchange between dormant and active propagating species