University of Verona

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    UNIVERSITÀ E MONTAGNA INSIEME. Esplorando nuove relazioni per promuovere una buona economia nel Baldo.

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    Il contributo sintetizza le principali fasi metodologiche di una ricerca-azione condotta nel Monte Baldo (Verona) dal Dipartimento di Scienze Economiche dell'Università di Verona. Una ricerca che ha coinvolto diverse realtà aziendali locali storiche per esplorare la loro visione di sviluppo sostenibile e del ruolo che può svolgere il Marchio del Baldo nella promozione di un ecosistema che sia in grado di valorizzare le risorse di cui dispone il territorio. La ricerca ha inoltre effettuato un confronto con la visione di sviluppo locale di cui sono portatrici altre iniziative profit e non profit di buona economi

    A second order directional split exponential integrator for systems of advection–diffusion–reaction equations

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    We propose a second order exponential scheme suitable for two-component coupled systems of stiff evolutionary advection–diffusion–reaction equations in two and three space dimensions. It is based on a directional splitting of the involved matrix functions, which allows for a simple yet efficient implementation through the computation of small sized exponential-like functions and tensor-matrix products. The procedure straightforwardly extends to the case of an arbitrary number of components and to any space dimension. Several numerical examples in 2D and 3D with physically relevant (advective) Schnakenberg, FitzHugh–Nagumo, DIB, and advective Brusselator models clearly show the advantage of the approach against state-of-the-art techniques

    Deep-UV Raman spectroscopy: A novel heuristic method to characterize volcanologically relevant glasses on Mars

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    Deep ultraviolet Raman spectroscopy is an essential component of the Perseverance rover operating on Mars. Here we propose a proof of concept of deep-UV Raman structural characterization of volcanologically relevant silicate glasses to provide a suitable analytical method of UV Raman spectra collected on Mars. The results show few but substantial spectral differences concerning those obtained by conventional Raman scattering using visible light laser sources. The evolution of the UV Raman spectra between 825 and 1300 cm-1 is confirmed to be more sensitive to the silica network's short-range structure than that below 700 cm-1 when compared to their visible counterpart. We adopted a Gaussian fitting model to parametrize the number of bridging oxygens resulting from the tetrahedral-oxygens stretching vibrations along a sub-alkaline join of volcanic glasses. We used these parameters to empirically provide a relation with the glass silica content. The model was externally validated with glasses having different and known compositions (in particular different amounts of iron, alkali and alumina) extending the validation set also to other magmatic series (i.e. alkaline and shoshonitic). Our approach enables a fast screening of deep-UV Raman spectra collected on Mars to disentangle the glass structure and retrieve its silica content within a given magmatic series. This method is relevant for planetary exploration and applies both to microanalysis of dry or hydrate volcanologically relevant glasses and general technical glasses since deep-UV Raman spectroscopy is particularly effective in reducing the unwished photoluminescence and increasing the signal-to-noise ratio

    Literary text

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    The entry aims to introduce the application of literary texts in organizational psychology. It does so by arguing that literary texts can be vehicles for research, education, and practice in organizational psychology. The entry begins with an overview of the definitions, history, and applications of literary texts over more than half of a century in the area of management and organization studies. It continues with a discussion on the epistemological and methodological aspects for the use of texts within organizational psychology. In this part, the entry gives particular emphasis on objections and contestations against the use of literary texts. Then, the entry offers some suggestions and examples of how to engage with texts. The entry concludes by reporting some reflections on the use of literary texts and texts in general (e.g., movies, TV series)

    Physical activity practiced at a young age is associated with a less severe subsequent clinical presentation in facioscapulohumeral muscular dystrophy

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    Background: In facioscapulohumeral muscular dystrophy (FSHD), it is not known whether physical activity (PA) practiced at young age is associated with the clinical presentation of disease. To assess this issue, we performed a retrospective cohort study concerning the previous practice of sports and, among them, those with medium-high cardiovascular commitment in clinically categorized carriers of a D4Z4 reduced allele (DRA). Methods: People aged between 18 and 60 were recruited as being DRA carriers. Subcategory (classical phenotype, A; incomplete phenotype, B; asymptomatic carriers, C; complex phenotype, D) and FSHD score, which measures muscle functional impairment, were assessed for all participants. Information on PAs was retrieved by using an online survey dealing with the practice of sports at a young age. Results: 368 participants were included in the study, average age 36.6 years (SD = 9.4), 47.6% male. The FSHD subcategory A was observed in 157 (42.7%) participants with average (± SD) FSHD score of 5.8 ± 3.0; the incomplete phenotype (category B) in 46 (12.5%) participants (average score 2.2 ± 1.7) and the D phenotype in 61 (16.6%, average score 6.5 ± 3.8). Asymptomatic carriers were 104 (subcategory C, 28.3%, score 0.0 ± 0.2). Time from symptoms onset was higher for patients with A (15.8 ± 11.1 years) and D phenotype (13.3 ± 11.9) than for patients with B phenotype (7.3 ± 9.0). The practice of sports was associated with lower FSHD score (-17%) in participants with A phenotype (MR = 0.83, 95% CI = 0.73-0.95, p = 0.007) and by 33% in participants with D phenotype (MR = 0.67, 95% CI = 0.51-0.89, p = 0.006). Conversely, no improvement was observed in participants with incomplete phenotype with mild severity (B). Conclusions: PAs at a young age are associated with a lower clinical score in the adult A and D FSHD subcategories. These results corroborate the need to consider PAs at the young age as a fundamental indicator for the correct clinical stratification of the disease and its possible evolution

    Production, purification and recovery of caproic acid, Volatile fatty acids and methane from Opuntia ficus indica

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    Opuntia ficus-indica can grow in arid and semi-arid environments characterized by low water and nutrients availability. These features make it a more sustainable alternative to the common energy crops for biorefinery purposes. This work focused on the potential benefits of anaerobic processes applied to this plant. Specifically, it considered i) the substrate preparation, demonstrating the effect of the apparent viscosity on the process; ii) the evaluation of biomethane, Volatile Fatty Acids (VFAs), and caproic acid production in semi-continuous mode at different hydraulic retention times; iii) the purification of the Fatty Acids-rich output through pressure-driven membrane filtration. The rheology analysis found that a 5 %w/w water dilution of the substrate is needed to lower the apparent viscosity to 173 cP, which is below the acceptable apparent viscosity level of 200 cP for a good bioreactor mixing. Keeping this condition, the semi-continuous trials with the best biomethane performance was at HRT of 20 days, with 210 mLCH4/gVS and 232 mLCH4/gCODin of production and specific yield, respectively. The VFAs and caproic acid production reached their best at Hydraulic Retention Time 5, with 26 and 7.9 gCOD/L of VFAs and caproic acid, corresponding to specific yields of 79 and 30 % respectively. Pressuredriven filtration at 330 kDa allowed to obtain a permeate with a VFAs and caproic acid content of 96.72%w/w. Finally, the adsorption and desorption tests allowed to separate caproic acid from the permeate and to concentrate it from about 7.5 gCOD/L to about 26 gCOD/L

    Editorial: Resmetirom - a promising treatment option for NASH and liver fibrosis

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    Resmetirom: a promising treatment option for NASH and liver fibrosi

    Questioning data and data becoming: Rhizomatic data-trail experimentations with bridge/briging

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    In the current presentation, we pose a series of questions and share provocations on how qualitative researchers interact with data and how data traces research possibilities. We play – follow our ambitious wonderings about data – with researchcreation possibilities to interrogate how data may become in various forms and timespaces. In our work, we depart rhizomatically from the inspiration we had during past experiences of data trails, i.e., a specific mode of thinking and doing for research-creation possibilities. These experiences with experimentation make us question research practices and the discourses around them; they invoke us to ponder a series of ethical-onto-epistemological turns with data. In this presentation, we let the concept of “bridge/bridging” help us with this pondering. Additionally, we share and create provocations about data without any ambition to solve ‘the data question”. Rather, we approach the question about data and their functions as we propose a series of wonderings and data points with the hope of inspiring colleagues to debate about data. The session is, eventually, an offer for an alternative reading of data

    Data Becomings: Bridge/Bridging Data-Trails in Qualitative Inquiry

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    This article plays with research-creation possibilities to interrogate data, data trails, and their becomings in qualitative inquiry. It arises through the inspiration of the authors’ experiences in experimenting with data-trails: a specific mode of thinking-doing for speculative research-creation possibilities. By placing these experiences alongside conventional discourses and protocols of research practice, the article ponders on a series of ethico-onto-epistemological questions about data becomings. We wonder about how qualitative researchers find and trace interconnected data? We approach this timeless question and adopt the concept of bridge/bridging to help us in considering the ontological sites that such data-trail research-creation possibilities afford


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