Guido Enrico Pellegrini

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A novel application of a hybrid biosensor is here employed as an analytical method for the detection and presumptive identification of beta-lactam residues in milk. The method is based on measurements of carbon dioxide (CO2), the production of which is related to the microbial growth of the test microorganism Bacillus stearothermophilus var. calidolactis.(More)
a r t i c l e i n f o There is still little consensus among economists on the effectiveness of business support policies. The evaluation of such policies requires a reliable identification procedure that is hardly achieved in empirical studies. We analyse the impact of a policy instrument – Law 488/92 (L488), the main Italian regional policy – that(More)
This paper shows that a suitable decomposition of TFP can be applied to a large sample of subsidized firms for a relevant period of time, allowing an evaluation of the impact of subsidies on either the roles of technical progress and technical efficiency change or scale and allocative efficiency change as determinants of granted firms’ long-term growth. We(More)
The paper proposes a new methodological approach to the identiication and extraction of an index of the business cycle. The main diierence with the previous literature is that the reference cycle is identiied as the common transitory component of a multivariate time series, and it is estimated using a structural multivariate approach. The empirical analysis(More)
Detection and ultrastructural localization of aspartyl proteinase (Sap) in Candida albicans experimentally infecting rat vagina were studied. Two Sap-positive (Sap+) and one Sap-negative (Sap-) strains of the fungus, endowed with high and low experimental vaginopathic potential, respectively, were used. Both Sap+ strains produced consistent Sap levels in(More)
The paper evaluates the statistical properties of two different matching estimators in the case of continuous treatment, using a Montecarlo experiment. The traditional generalized propensity score matching estimator is compared whit a new two steps matching estimator for the continuous treatment case, recently developed [1]. It compares treatment and(More)
The Authors consider EMC problems in H.V.substations in which the protection,measurement and control functions are obtained with up-to date solid-state technologies equipment; the system configuration is typical and includes line and transformer bays. The A.,in order to evaluate the problems in a systematic way,consider.the power system and equipment. in it(More)
Immune thrombocytopenic purpura is an infrequent yet well-recognized complication of viral infections, such as mumps, rubella, varicella, cytomegalovirus, parvovirus and infectious monunucleosis by Epstein-Barr virus. Some recent studies have described a possible association between Henoch-Schonlein purpura, a non-thrombocytopenic purpura, and(More)
To determine whether firms are credit constrained we analyze how they react to the availability of capital grants: constrained firms will use grants to expand investment, while unconstrained firms will use them as a substitute for other borrowing. This idea is applied to a sample of Italian firms that requested the financial assistance provided by an(More)