Search results for "ESA"
showing 10 items of 11914 documents
L’analisi delle politiche di riduzione dei cesarei attraverso il dynamic performance management: La valutazione del percorso nascita in un’azienda sa…
2018
Da tre decenni l'Organizzazione Mondiale della Sanità considera appropriata una percentuale di cesarei tra il l 0-1 5%. Tuttavia, molti Paesi tuttora si trovano a fronteggiare valori molto più elevati e le politiche adottate dai decisori pubblici spesso mostrano di essere poco efficaci. Il presente lavoro prende avvio dall'analisi del percorso nascita introdotto in Sicilia e propone il ricorso all'approccio del Dynamic Performance Management per investigare le cause sottostanti l'andamento dei parti cesarei. Lo studio ha consentito di costruire un modello di System Dynamics, successivamente personalizzato con i dati di un'azienda sanitaria. L'analisi dei risultati delle simulazioni evidenzi…
Framing Caesarean Section Reduction Policies Through a Dynamic Performance Management Approach: A Maternity Pathway Case-Based Analysis
2017
The World Health Organization since the last three decades strongly encourages countries to reduce the caesarean section (CS) rate down to 10–15%. However, this goal nowadays appears still far from its achievement. Public decision-makers are indeed struggling to design and implement effective policies to reduce the CS rate. The literature provides a wide range of factors causing a change in the CS rate, such as the patient clinical profile and the healthcare service quality provided. Maternity pathway (MP) is considered a mean through which to standardize the cares and to reduce CSs. This study investigates the MP recently introduced in Sicilian local health authorities. Based on such an an…
Quantitative Raman spectroscopy as a tool to study the kinetics and formation mechanism of carbonates
2013
We have carried out a systematic study of abiotic precipitation at different temperatures of several Mg and Ca carbonates (calcite, nesquehonite, hydrocalcite) present in carbonaceous chondrites. This study highlights the capability of Raman spectroscopy as a primary tool for performing full mineralogical analysis. The precipitation reaction and the structure of the resulting carbonates were monitored and identified with Raman spectroscopy. Raman spectroscopy enabled us to confirm that the precipitation reaction is very fast (minutes) when Ca(II) is present in the solution, whereas for Mg(II) such reactions developed at rather slow rates (weeks). We also observed that both the composition a…
Modeling red coral (Corallium rubrum) and African snail (Helixia aspersa) shell pigments: Raman spectroscopyversusDFT studies
2016
Pigments from red coral (Corallium rubrum) and African snail (Helixia aspersa) shell were studied non-invasively using Raman spectroscopy with 1064-nm laser beam. The two observed bands because of organic pigments confined in biomineralized CaCO3 matrix at about 1500 and 1100 cm−1 were assigned to ν(CC) and ν(C―C), respectively. Both signals originate from polyene(s) of largely unknown structure, containing several conjugated CC bonds. The small peak at 1016 cm−1 in the Raman spectrum of coral pigment was assigned to in-plane ―CH3 rocking or structural deformation of polyene chain because of spatial confinement in the mineral matrix. The organic pigments in red coral and snail shell were pr…
Histological evaluation of bone repair using beta-Tricalcium Phosphate
2010
Objectives: The aim of the present study was to evaluate bone repair in defects induced in the cranium of Wistar rats using ?-tricalcium phosphate. Study Design: In this research, we used 30 rats, randomly distributed in three groups of 10 animals (G1, G2 and G3), corresponding respectively to time of histological evaluation (7, 15 and 30 days). This was a paired study, a defect being induced in the parietal bone on either side of the median sagittal suture of the animals, being the left-hand side the experimental subgroup (filled by biomaterial) and the right control. The histological evaluation was performed by means of light microscopy. The collected data were submitted to the Fisher Exa…
Galvanic deposition and characterization of brushite/hydroxyapatite coatings on 316L stainless steel
2016
In this work, brushite and brushite/hydroxyapatite (BS, CaHPO4·H2O; HA, Ca10(PO4)6(OH)2) coatings were deposited on 316L stainless steel (316LSS) from a solution containing Ca(NO3)2·4H2O and NH4H2PO4 by a displacement reaction based on a galvanic contact, where zinc acts as sacrificial anode. Driving force for the cementation reaction arises from the difference in the electrochemical standard potentials of two different metallic materials (316LSS and Zn) immersed in an electrolyte, so forming a galvanic contact leading to the deposition of BS/HA on nobler metal. We found that temperature and deposition time affect coating features (morphology, structure, and composition). Deposits were char…
The origin of the auditor’s income and audit quality : the Spanish case
2022
Estudios previos señalan la existencia de una relación entre la especialización del auditor y la calidad de la auditoría. A partir de esta idea, cuanto más importante sea la actividad de auditoría en el total del negocio de la firma auditora y mayor especialización exista en dicha actividad, el auditor firmante adoptará una postura más conservadora en la emisión de su informe. Utilizando la materialidad cuantitativa como subrogado de la calidad, se examina el efecto que los honorarios por otros servicios distintos a los de auditoría y el peso de los socios firmantes en la firma tienen sobre la cifra de materialidad. Partiendo de la materialidad real utilizada en cada uno de los encargos com…
LA CALUNNIA DIFENSIVA AI CONFINI DEL DIRITTO DI DIFESA: SULLA NECESSITÀ DI DISTINGUERE TRA CALUNNIA IMPLICITA E CALUNNIA-MEZZO
2020
La giurisprudenza sembra avere ormai individuato un criterio sufficientemente stabile per decidere quando la calunnia difensiva sia lecita e quando non lo sia: a tal fine, occorrerebbe verificare che tra calunnia e difesa corra (quella che i giudici chiamano) una stretta connessione funzionale; la quale, peraltro, dipenderebbe anche dalle modalità concrete della calunnia: quanto più dettagliata e credibile sia questa, tanto meno stretta sarebbe la sua connessione funzionale con la difesa. Nell’articolo si sostiene che, sebbene le soluzioni giurisprudenziali alle quali si giunge in applicazione di questo criterio appaiano generalmente condivisibili, il criterio stesso ne costituisce una gius…
El Desarrollo profesional del profesor de ciencias mediante tutorías de grupos cooperativos : estudio de ocho casos
2002
La formación continuada de profesores de ciencias, concebida como desarrollo profesional, ha adquirido recientemente relevancia en la investigación en didáctica de las ciencias. En este artículo se presenta un modelo de formación de profesores en activo basado en un programa teórico-práctico desarrollado mediante tutorías de orientación constructivista. Este modelo se ha puesto a prueba en un estudio longitudinal de varios años en el que se ha hecho un seguimiento del cambio didáctico ocurrido en ocho profesores de ciencias de secundaria. En el trabajo se presenta un diseño pretest-postest con indicadores de los cambios epistemológicos y actitudinales que han tenido lugar en estos profesore…
Al Rey Nuestro Señor, Dios le guarde, administrador perpetuo de la Orden de Montesa, y San George de Alfama : Memorial apologetico de D. Ioseph Camb…
1695
Port. amb orla tip. Sign.: [A]-G2, H3