Archivio istituzionale della ricerca - Alma Mater Studiorum Università di Bologna
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Riflessioni inattuali su quella «linguaccia»
No full textRiflessioni sulla didattica (e sull didattica speciale) del greco nell'Italia del terzo millennio
Per una storia della professionalità educativa. La formazione iniziale di Giancarlo Cerini
No full textLa difficile conservazione delle risorse naturali nelle aree protette del Brasile. Il caso del Parco Nazionale di Brasilia
Full text linkL’articolo discute del processo di istituzione e gestione del Parco Nazionale di Brasilia, evidenziando le criticità legate alla relazione tra l’area protetta e le attività antropiche
presenti nel suo intorno (e all’interno). Il testo introduce gli aspetti normativi del contesto
brasiliano e si sviluppa facendo riferimento ad un corpus nazionale e internazionale di
riferimenti bibliografici sulla conservazione ambientale. Il cuore del saggio presenta e discute i risultati di una ricerca sul campo, che consente di evidenziare potenzialità e limiti
legati agli usi delle risorse naturali locali, in particolare per quanto riguarda la conservazione delle fonti idrologiche del territorio, fondamentali per le comunità e le attività economiche dell’area di Brasilia
Microbial Ecology and Nutritional Features in Liquid Sourdough Containing Hemp Flour Fermented by Lactic Acid Bacterial Strains
No full textHemp seed flour (Cannabis sativa) is a non-traditional matrix alternative to wheat for baked goods production. The aim of this study was to investigate the microbiota of two liquid sourdoughs (SLs) based on hemp or a wheat-hemp mixture, before and after spontaneous or piloted fermentation (Lactiplantibacillus plantarum ITM21B or Weissella cibaria C43-11 used as starters). Culture-dependent and -independent (high-throughput sequencing of bacterial phylogenetic V3-V4 regions of the 16S rRNA gene) methods, were used to evaluate the microbial community. The effect of fermentation on the content of bioactive molecules (polyphenols, organic acids, proteins, and amino acids) was also investigated. Results indicated that the microbial community of all SLs was mainly (99.7 divided by 100%) composed of Firmicutes and Proteobacteria, and the latter was the unique phylum before fermentation in formulations produced exclusively with hemp flour. Two PCoA plots (Test adonis with pseudo-F ratio, p > 0.05) showed no significance difference between the microbial communities of the formulations. However, the relative abundance variation at the family level in the wheat-hemp-based mixture SLs showed a significant enrichment of the Lactobacillaceae family (Kruskal-Wallis test, p = 0.04). Moreover, results confirmed hemp seed flour as a suitable fermentation substrate to obtain microbial consortia allowing for an increase in organic acids, especially lactic acid (9.12 +/- 1.22 and 7.45 +/- 0.75 mmol/kg with Lpb. plantarum and W. cibaria, respectively), in both piloted fermentations, and in polyphenols by 21% and amino acids by 158% in SL fermented by the C43-11 strain
EVALUATION OF THE TRANSPORT TIME OF CARCASSES TO THE SLAUGHTERHOUSE IN CASE OF ON-FARM EMERGENCY SLAUGHTER ANIMALS
No full textSchedule III, section I, chapter VI of Regulation (CE) 853/2004 governs on-farm emergency slaughter (OFES). It specifies that transport to the slaughterhouse must occur "without undue delay," and if the journey exceeds two hours, the carcass must be refrigerated. Active chilling is not mandatory where climatic conditions suffice. At the slaughterhouse, the official veterinarian checks the accompanying OFES animal document (Modello 1) to verify the elapsed time from slaughter to arrival. Any discrepancies between the certified causes of OFES and post-arrival findings may lead to the carcass being deemed unfit for human consumption and the official veterinarian informs the competent authority for the territory of the farm of origin. Time from slaughter at the farm to evisceration at the abattoir of OFES carcases is important because can promote bacterial contamination risk of meat in the event of late evisceration (1). Precise postmortem carcass deterioration timelines remain unclear due to intrinsic and extrinsic factors such as temperature and humidity. (2). In 2023, a study was carried out to examine health certificates (Modello 1), as mandated by Article 4 of Regulation (UE) 2019/624 and Schedule IV, Chapter V of Regulation (UE) 2020/2235. The analysis focused on OFES carcasses within the district of the Modena local health authority (AUSL) to assess adherence to transport time regulations from the point of slaughter to their arrival at the slaughterhouse. The Modena AUSL jurisdiction spans 2,688 square kilometres and includes four districts: Pavullo, Vignola, Carpi-Mirandola, and Modena-Sassuolo-Castelfranco. In 2023, this territory housed 1,002 cattle farms, with a total of 95,207 bovines. From the 926 cases of on-farm emergency slaughter (OFES), representing 1.7% of the bovine population, 855 health certificates documenting carcass transport journeys were analysed, covering 92.3% of OFES cases. The study identified 11 destination slaughterhouses. No carcasses were transported using refrigerated trucks, and slaughter time coincided with the loading of carcasses onto transport vehicles. Using Google Maps, the average distance between farms and slaughterhouses was calculated as 35.7 km (range: 3–120 km; mode: 36.6 km), with an average travel time of 38 minutes (range: 1–130 minutes; mode: 53 minutes). Data revealed that only one OFES carcass exceeded the two-hour transport limit set by EU legislation. Mapping destination slaughterhouses aids in the proactive assessment and management of travel times to ensure compliance with hygienic standards. Minimizing the interval from slaughter to carcass loading remains crucial, particularly during hot weather when refrigerated trucks are unavailable.
(1) Nagel-Alne, G. E., Murphy, E., McCauslin, B., Hauge, S. J., Schrøder-Petersen, D. L., Holthe, J., & Alvseike, O. (2022). Meat safety legislation and its opportunities and hurdles for innovative approaches: A review. In Food Control (Vol. 141). Elsevier Ltd. https://doi.org/10.1016/j.foodcont.2022.109160
(2) SciCom (Comité scientifique institué auprès de l’Agence Fédérale pour la Sécurité de la Chaîne Alimentaire), Délai entre la saignée et l’éviscération pendant le processus d’abattage d’ongulés domestiques, AVIS 05-2024, p.1-2
Dietary calcium intake in primary hyperparathyroidism and in its normocalcemic variant: a case-control study
Full text linkIntroduction: Normocalcemic primary hyperparathyroidism (NHPT) is considered to be an early stage in the evolution of primary hyperparathyroidism (PHPT). To formulate a correct diagnosis, secondary hyperparathyroidism due to low calcium intake must be excluded. Whether dietary calcium intake might affect the clinical presentation of PHPT or NHPT has never been addressed consistently. Objective: To describe patients with a diagnosis of NHPT or PHPT in relation to their calcium intake, through three standard validated questionnaires; to describe clinical, biochemical and radiological features of NHPT and PHPT patients compared to each other and to a control group. Design: Cross-sectional study. Setting: Outpatient, single academic medical center. Patients: 109 consecutive women recruited from February 2021 through April 2023. 54 patients with mild primary hyperparathyroidism (PHPT or NHPT) were age-matched with 55 unselected women undergoing bone density test screening due to recently diagnosed hormone-positive breast cancer. NHPT diagnosis was based on multiple determinations of both total and albumin-corrected serum calcium. Interventions: Administration of all the following during routine endocrine consultation: a country-specific food-frequency questionnaire (LOC), the International Osteoporosis Foundation Calcium Calculator (IOF) and the National Osteoporosis Foundation calcium questionnaire (NOF). Main outcome measures: Any association between dietary calcium intake and clinical, radiological, or biochemical features. Results: All three questionnaires confirmed that NHPT patients had similar calcium intake as those with PHPT or controls. Biochemistries and bone turnover markers were similar between the two variants of hyperparathyroidism, except for serum calcium (sCa). NHPT patients had a significantly lower BMD and T-score at one-third distal radius compared to PHPT, while the prevalence of nephrolithiasis and clinical fractures were similar. Multivariate analysis investigating predictors of serum calcium showed that age, eGFR, calcium intake and 25(OH)D did not significantly affect serum calcium, while multivariate analysis investigating predictors of PTH (age, variant NHPT vs. PHPT, eGFR, calcium intake, 25(OH)D, cholecalciferol supplements) showed that calcium intake, variant and renal function, significantly influenced PTH levels. Conclusions: All patients with primary hyperparathyroidism, particularly those with low dietary calcium intake, should be advised not to restrict dietary calcium to prevent further increase in PTH levels. Whether maintaining adequate calcium intake might positively impact bone density or biochemistries in patients refraining from surgery, should be addressed in longitudinal studies
The impact of growth hacking on firm performance under environmental turbulence: A moderated-mediation analysis
Full text linkThe purpose of the study is to examine the influence of growth hacking on marketing capability, disruptive innovation, and firms’ performance. Structural equation modeling was used to analyze the data. The results show that growth hacking positively influences marketing capabilities, disruptive innovation, and firms’ performance. Further, marketing capabilities and disruptive innovation were observed to mediate the association between growth hacking and firm performance, whereas technological turbulence moderates the association between disruptive innovation and firm performance. The findings suggest that firms can use growth hacking to foster marketing capabilities and disruptive innovation, which may affect firm performance. Besides, firms need to constantly monitor the technological turbulence levels
Regional-scale bridge health monitoring: survey of current methods and roadmap for future opportunities under changing climate
Full text linkClimate-related extreme events are becoming increasingly frequent, posing significant threats to bridges, which are critical components of transportation infrastructure. This paper offers an overview of recent advancements in methodologies and technologies for conducting structural health monitoring (SHM) of bridges over large areas, where deploying sensors on every structure may be cost-prohibitive for local administrations. It specifically examines two approaches that have garnered interest in the past decade: indirect SHM, which involves instrumenting vehicles and analyzing their dynamic responses to infer information about bridges, and satellite interferometric radar data, which offer static displacement measurements for large regions and has recently been exploited for civil SHM purposes. Additionally, it reviews the recent developments in population-based SHM, which facilitates knowledge-sharing among structures with similar characteristics within a population. Through an analysis of the advantages and limitations of these three rapidly developing research areas, the paper outlines future opportunities and lays the roadmap for a comprehensive “regional-scale SHM” approach based on remote and/or crowdsourced data, supported by population-level analyses. Specific topics addressed include strategies for similarity assessment among monitored structures, available data sources, and feature extraction/integration approaches for different scenarios
‘Come Down from Those Yonder Stars!’ Apostilles to Yt. 5,85; 88; 132
No full textThe present article deals with a special invocation to Anāhitā, occurring three times in the fifth Yašt (Yt. 5,85; 88; 132) of the Avesta. By means of a unique formula, the goddess is asked to come down from the nocturnal sky. The special ban of nocturnal ceremonies in favour of Anāhitā seems apparently in contradiction with this kind of nocturnal invocation, but it probably implies that the goddess descends from haven only when the stars have set. Furthermore, some of the cosmological and ceremonial
implications of this“invitation” are discussed within the framework of the debate about the rationale of the liturgical disposition of the Great Yašts and of the economy of the Zoroastrian organization of the sacrifice
Giuseppe Pistocchi architetto teatrale. Il teatro di Faenza e alcune spigolature archivistiche su Forlì e Imola
Full text linkIl teatro di Faenza, costruito tra il 1780 e il 1787 su progetto di Giuseppe Pistocchi, è un esempio di straordinario interesse per quanto riguarda l’aggiornamento del tipo architettonico del teatro all’italiana in epoca illuminista. La pianta della sala è infatti basata sulla figura geometrica del cerchio: non può non saltare all’occhio il parallelo con il nuovo modello di teatro (circolare e ‘democratico’) proposto da Milizia (1771) o dall’Encyclopedie (1777). Né può mancare un raffronto con i teatri di Ledoux (1778) e Boullée (1781). Pistocchi realizza a Faenza un raffinato compromesso tra il nuovo modello rivoluzionario e il classico teatro all’italiana: negli ultimi anni del dominio pontificio, forse solo questo tipo di mediazione era ideologicamente possibile. È infatti solo negli anni di Napoleone che Pistocchi riuscì finalmente a progettare (ma non a costruire) un teatro pienamente moderno, di ispirazione greca, a gradinate circolari.The theatre of Faenza, built between 1780 and 1787 and designed by Giuseppe Pistocchi, is an extraordinary example of the updating of the architectural type of the Italian theatre in the Enlightenment era. The plan of the hall is in fact based on the geometric figure of the circle: the parallel with the new theatre model (circular and ‘democratic’) proposed by Milizia (1771) or the Encyclopedie (1777) cannot fail to catch the eye. Nor can a comparison with the theatres of Ledoux (1778) and Boullée (1781) be missed. Pistocchi created in Faenza a refined compromise between the new revolutionary model and the classic Italian theatre: in the last years of papal rule, perhaps only this type of mediation was ideologically possible. It was in fact only in the Napoleonic years that Pistocchi finally managed to design (but not build) a fully modern theatre, of Greek inspiration, with circular steps