Ellen Key e la rete delle scuole nuove in Europa (1899-1914)

La ricerca parte dall’intento di indagare le relazioni che intrattenne Ellen Key con i fondatori delle scuole nuove in Europa a cavallo del Novecento e il contributo che lei offrì alla loro disseminazione. All’inizio del Novecento Ellen Key era al centro del dibattito pedagogico e femminista, non solo in Svezia ma in tutta l’Europa Centrale e anche in Italia, dove compì lunghi soggiorni (1900-1901 e 1906-1908). La pedagoga svedese fu un’intellettuale che sostenne strenuamente la libertà di espressione e di stampa, fu promotrice di una Carta dei diritti dei bambini e fautrice di politiche sociali per la protezione della maternità e della relazione madre-bambino. Al volgere del Ventesimo secolo si verificò l’emergere di una serie di esperimenti pedagogici innovativi che presero le mosse dalla Abbotsholme school fondata da Cecil Reddie, nel 1889, e si diffusero in Francia con la fondazione della Ecole des Roches da parte di Edmond Demolins, in Germania con le scuole di campagna (Landerziehungsheime di Ilseburg, Haubinda e Bieberstein) fondate da Hermann Lietz, la comunità scolastica di Wickersdorf e la Odenwaldschule di Paul Geheeb. Ellen Key si relazionò con questi importanti esperimenti pedagogici e, grazie ai suoi continui spostamenti, visitò alcune scuole nuove. Nello specifico la ricerca prende le mosse dall’analisi dei manoscritti e dei carteggi del fondo Ellen Key, presso la Biblioteca Reale di Stoccolma e la biblioteca privata di Ellen Key a Villa Strand. Dai documenti analizzati emerge come la scrittrice svedese, abbia assunto un ruolo di mediatrice per la disseminazione delle Scuole Nuove che nei primissimi anni del Novecento raggiunsero un elevato grado di diffusione.

Fine tuning of on-growing diets for farmed marine fish species as a key tool to sustain the aquaculture development

The aim of this thesis was to investigate some important key factors able to promote the prospected growth of the aquaculture sector. The limited availability of fishmeal and fish oil led the attention of the aquafeed industry to reduce the dependency on marine raw materials in favor of vegetable ingredients. In Chapter 2, we reported the effects of fishmeal replacement by a mixture of plant proteins in turbot (Psetta maxima L.) juveniles. At the end of the trial, it was found that over the 15% plant protein inclusion can cause stress and exert negative effects on growth performance and welfare. Climate change aroused the attention of the aquafeed industry toward the production of specific diets capable to counteract high temperatures. In Chapter 3, we investigated the most suitable dietary lipid level for gilthead seabream (Sparus aurata L.) reared at Mediterranean summer temperature. In this trial, it was highlighted that 18% dietary lipid allows a protein sparing effect, thus making the farming of this species economically and environmentally more sustainable. The introduction of new farmed fish species makes necessary the development of new species-specific diets. In Chapter 4, we assessed growth response and feed utilization of common sole (Solea solea L.) juveniles fed graded dietary lipid levels. At the end of the trial, it was found that increasing dietary lipids over 8% led to a substantial decline in growth performance and feed utilization indices. In Chapter 5, we investigated the suitability of mussel meal as alternative ingredient in diets for common sole juveniles. Mussel meal proved to be a very effective alternative ingredient for enhancing growth performance, feed palatability and feed utilization in sole irrespectively to the tested inclusion levels. This thesis highlighted the importance of formulating more specific diets in order to support the aquaculture growth in a sustainable way.

Key issues in diagnosing and treating acute aortic syndromes: results from the metropolitan area of Bologna network

Background: Survival of patients with Acute Aortic Syndrome (AAS) may relate to the speed of diagnosis. Diagnostic delay is exacerbated by non classical presentations such as myocardial ischemia or acute heart failure (AHF). However little is known about clinical implications and pathophysiological mechanisms of Troponin T elevation and AHF in AAS. Methods and Results: Data were collected from a prospective metropolitan AAS registry (398 patients diagnosed between 2000 and 2013). Troponin T values (either standard or high sensitivity assay, HS) were available in 248 patients (60%) of the registry population; the overall frequency of troponin positivity was 28% (ranging from 16% to 54%, using standard or HS assay respectively, p = 0.001). Troponin positivity was associated with a twofold increased risk of long in-hospital diagnostic time (OR 1.92, 95% CI 1.05-3.52, p = 0.03), but not with in-hospital mortality. The combination of positive troponin and ACS-like ECG abnormalities resulted in a significantly increased risk of inappropriate therapy due to a misdiagnosis of ACS (OR 2.48, 95% CI 1.12-5.54, p = 0.02). Patients with AHF were identified by the presence of dyspnea as presentation symptom or radiological signs of pulmonary congestion or cardiogenic shock. The overall frequency of AHF was 28 % (32% type A vs. 20% type B AAS, p = 0.01). AHF was due to a variety of pathophysiological mechanisms including cardiac tamponade (26%), aortic regurgitation (25%), myocardial ischemia (17%), hypertensive crisis (10%). AHF was associated with increased surgical delay and with increased risk of in-hospital death (adjusted OR 1.97 95% CI1.13-3.37,p=0.01). Conclusions: Troponin positivity (particularly HS) was a frequent finding in AAS. Abnormal troponin values were strongly associated with ACS-like ECG findings, in-hospital diagnostic delay, and inappropriate therapy. AHF was associated with increased surgical delay and was an independent predictor of in-hospital mortality.