University of Bologna

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    6076 research outputs found

    OLEUM Project. Sensory panels analysis of commercial virgin olive oil samples. Results from the first and second year of the OLEUM project

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    A set of 334 commercial virgin olive oil (VOO) samples were evaluated by six sensory panels during the H2020 OLEUM project. Sensory data were elaborated with two main objectives: i) to classify and characterize samples in order to use them for possible correlations with physical-chemical data and ii) to monitor and improve the performance of panels. After revision of the IOC guidelines in 2018, this work represents the first published attempt to verify some of the recommended quality control tools, in order to increase harmonization among panels. Specifically, a new "decision tree" scheme was developed, and some IOC quality control procedures, were applied. The adoption of these tools allowed for reliable classification of 289 of 334 VOOs; for the remaining 45, misalignments between panels of first (on the category, 21 cases) or second type (on the main perceived defect, 24 cases) occurred. In these cases, a “formative reassessment” was necessary. At the end, 329 of 334 VOOs (98.5%) were classified, thus confirming the effectiveness of this approach to achieve a better proficiency. Panels showed good performance, but the need to adopt new reference materials that are stable and reproducible to improve the panel’s skills and agreement also emerged

    iSCAPE. WP5. Effects of Vegetation Urban Street Canyons. Summer 2017 and Winter 2018 Experimental Campaigns

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    This dataset contains the observations of air quality collected within two experimental campaigns conducted in summer 2017 (07 August 2017-26 September 2017) and winter 2018 (15 January 2018-15 February 2018) in two street canyons in the city of Bologna, to verify the effectiveness of vegetation in altering ventilation levels and pollutant concentration in real-world street canyons. The dataset also contains the meteorological data collected during non-synoptic periods, representing the ideal condition to assess the behavior of the local circulation and turbulence. The experimental field campaigns were setup under WP3 (“Planning and evaluation of PCS solutions”) and conducted under WP5 (“Monitoring and Evaluation of the Interventions”) of the iSCAPE project. Briefly, two parallel urban street canyons characterized by a different occurrence of vegetation, i.e. one almost free of vegetation (Marconi St.) and one with a tree line along both sides of the street (Laura Bassi St.), were instrumented for measurements of meteorology and turbulence variables at three height levels, while pollutant concentrations were monitored at ground level inside both canyons. This dataset is linked to the paper “Disentangling the effect of vegetation on ventilation and air quality in urban street canyons: the Bologna iSCAPE experimental campaigns” by Di Sabatino et al., which will be submitted for publication on “Science of the Total Environment” edited by Elsevier, and to the paper “Characteristic Scales for Turbulent Exchange Processes in a Real Urban Canopy” by Barbano et al., which is under review for publication on “Boundary-Layer Meteorology” edited by Springer. If you use this dataset for your research or work purposes, we ask that you acknowledge us in the use of your data, which can be done by including a proper citation in any documents or publications using these data

    Appendix data of the paper "Ecosystem Services of Urban Agriculture: Perceptions of Project Leaders, Stakeholders and the General Public"

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    This file contains the appendix data of the paper "Ecosystem Services of Urban Agriculture: Perceptions of Project Leaders, Stakeholders and the General Public

    Opening the Red Budget Box: Nonlinear Effects of a Tax Shock in the UK

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    This paper studies the real effects of an exogenous UK tax change in recessions and expansions. The tax shock is identified via the measure proposed by Cloyne (2013). Combining local projection techniques (Jordà, 2005) with smooth transition regressions (Granger and Teräsvirta, 1994), tax policy shock is found to affect UK macroeconomic variables depending on the phase of the business cycle the economy is when tax shock occurs. An exogenous tax cut in recessions triggers a large, persistent, positive, and statistically significant reaction in output, consumption, investment, exports, imports, and government consumption. The results suggest that the output tax multiplier is positive and above one (in absolute value) in recessions but not in expansions. The size and the sign of responses of a number of macroeconomic variables are also found to be state-contingent

    Vespasiano da Bisticci, Lettere. Knowledge Base 2020

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    Edizione digitale semantica delle Lettere di Vespasiano da Bisticci, comprensiva di: dataset, applicazione, documentazion

    MADFORWATER. WP2 Adaptation of wastewater treatment technologies for agricultural reuse. Task2.2 Municipal wastewater and drainage canal water treatment. UMA-Tunisia

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    This dataset contains the data produced by UMA team in the framework of task 2.2 of MADFORWATER project. This task deal with a set of data generated regarding the detection of antibiotic resistance genes and enterovirus, particularly Hepatitis A virus from Treated Municipal Wastewater. To monitor the prevalence of antibiotic resistant bacteria in MWW before and after treatment, the qualitative and quantitative PCR methods, allowing the detection of resistance genes in all microorganisms including the non-culturable species, were performed. PCR products of target antibiotic genes (tet(O), tet(Q), tet(W), tet(G), amp(C) and bla TEM) were loaded and visualized on agarose gels. For qPCR, the analysis was performed in order to detect and quantify the antibiotic resistance genes copy number. The investigation of the Hepatitis A virus prevalence in MTWW was performed using two different extraction methods (virus extraction, concentration and concentrate decontamination method according to US Environmental Protection Agency (1992) from Mud (M) and Supernatant (S) of the influent and from the effluent and virus concentration from water with adsorption/elution on glass wool (XP T 90-451. March 1996) (Rodier et al., 2009)) followed by qPCR. A specific attention was dedicated to the detection of SARS-CoV-2 in wastewaters using the same protocols developed and optimized under MADFORWATER (RNA extraction/concentration, cDNA synthesis, Q-RT-PCR) by using specific DNA primers approved in the RT-PCR test. This could contribute to better understanding and studying the emerged SARS-CoV-2 and its propagation routes and epidemiology in a given population (i.e. Tunis city). Regarding Microarray, the generated data were produced and elaborated basing on a list of targeted genes downloaded from accessible databases (NCBI, IMG, KEEG). The effectiveness of MWWTP cannot be approved without accepted microbiological quality. In the literature, there is a huge number of publications and standards related fecal or pathogen bacteria removal in wastewater treatment plant (WWTP), many publications show inefficiency of current MWWTP in removing virus but no standards dealing with virus detection from MWW in Tunisia. Generated data allowed the design of the WWchip, able to monitor catabolic genes markers of fecal indicators, pathogens indicators, virus and antibiotic resistant bacteria. A total of 3744 genes and 12832 probes were designated. In silico validation and verification of all probes was performed using the BLASTN algorithm and custom-made databases. Two set of data are proposed. The first one summarizes the gene type, number of genes and number of probes considered in the design of the WWchip. The list and sequences of all the probes of target genes is presented a second set of data. The data format produced by the microarray consists of a list of genes and corresponding values that represent relative DNA levels of each targeted gene. The developed WWChip will constitute a new rapid tool for pathogen monitoring of different types of treated wastewaters

    La comunità durante il lockdown: Report preliminare di ricerca

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    L'obiettivo della ricerca era di comprendere l’impatto che la pandemia Covid-19 e le misure di contenimento hanno avuto sulle dinamiche psicosociali della vita nelle comunità, con una attenzione sugli effetti dell'emergenza su stili di vita, coesione, comportamenti pro-sociali e prospettiva sul futuro. Volevamo ottenere dati non soltanto sugli impatti negativi che richiedono l’attivazione di azioni e progetti ad hoc, ma anche sulle risorse e le capacità che le persone e le comunità hanno mostrato (anchedurante la pandemia. La ricerca è stata realizzata nel periodo aprile-maggio 2020. La raccolta dei dati è avvenuta utilizzando un questionario on-line, distribuito mediante la piattaforma Qualtrics.Il campione è costituto da 1470 partecipanti, in maggioranza donne

    Misure per contrastare l’emergenza durante l’epidemia da SARS-CoV-2: perché il controllo efficace della diffusione del contagio non può prescindere dal controllo dell’umidità dell’aria ambiente

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    In estrema sintesi si può affermare che il controllo del grado igrometrico dell’aria ambiente sia un parametro decisivo per il controllo della diffusione del contagio da SARS-CoV-2. In assenza di questo controllo, la definizione stessa di distanza di sicurezza perderebbe di significato. Le goccioline, che sono emesse da soggetti infetti e che sono il veicolo reale del contagio, infatti, all’aumentare del grado igrometrico ambiente (umidità), permangono per tempi maggiori sulle superfici e possono percorrere distanze maggiori per arrivare ad infettare. Dunque, per gradi igrometrici tendenti al 100%, ovvero in condizioni di saturazione dell’aria ambiente, le goccioline permangono in ambiente, eventualmente sospese in aria, per tempi molto lunghi. Questa condizione è dunque la più pericolosa in riferimento alla diffusione del contagio. Viceversa, il controllo del grado igrometrico (ad esempio a valori non superiori al 50%) ne permetterebbe l’evaporazione in tempi relativamente rapidi, rendendo efficace la distanza di sicurezza. La permanenza di persone all’interno dei locali che prevedano il controllo della qualità e delle condizioni termo-igrometriche dell’aria ambiente, nel rispetto della loro capienza massima e della distanza di sicurezza, rappresenta un efficace ostacolo alla trasmissione del contagio. Tale controllo non è attuabile in caso di permanenza, per esempio, ai tavolini posizionati all’esterno dei locali. Infatti, con riferimento alle ore serali o del tardo pomeriggio, nelle stagioni autunnali o invernali, alla riduzione della temperatura esterna consegue l’aumento del grado igrometrico, che porta ad un tempo di permanenza in aria delle goccioline assai elevato. In particolare, nel caso in cui le condizioni di saturazione fossero raggiunte, il rischio sarebbe elevatissimo. Il controllo del grado igrometrico è impossibile in ambiente esterno. Pertanto, guardando alle condizioni di questi ultimi giorni, può succedere che, con l’abbassarsi della temperatura dopo le ore 16, l’umidità dell’aria arrivi al 100%, come dimostra il velo di condensa che si deposita sulle superfici esterne, comprese quelle dei tavolini e sulle sedie. Queste sono le condizioni ottimali per la trasmissione del virus. In ambiente saturo e affollato, ancorché all’aperto, è sufficiente la presenza di un infetto per propagare il virus in modo rilevante in quanto le goccioline più grandi non evaporano mentre quelle più piccole rimangono in sospensione per tempi lunghi, condizioni davvero ideali per propagare il contagio. In ambienti interni, viceversa, dove si possa contenere l’umidità al di sotto del 50%, sarebbe possibile, con ragionevole grado di sicurezza, svolgere attività anche aperta al pubblico senza incorrere in situazioni di rischio elevato, contemperando, cioè, attività economiche e sicurezza

    Insegnanti e pandemia

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    A partire da febbraio 2020, l'emergenza sanitaria causata dal COVID-19 ha portato a provvedimenti di contenimento della diffusione del virus con restrizioni della mobilità dei cittadini, confinamento e chiusura delle scuole di ogni ordine e grado su tutto il territorio nazionale. A causa della chiusura delle scuole, inoltre, gli insegnanti hanno dovuto attivare repentinamente modalità di Didattica a Distanza (DaD), senza alcun tipo di preparazione o formazione preliminare. Il presente report illustra i principali risultati di un'indagine svolta durante la chiusura delle scuole che ha coinvolto più di 1000 insegnanti italiani. L'obiettivo era studiare se e come tale richiesta improvvisa di modifiche al proprio lavoro, la mancanza di competenze per l'insegnamento a distanza, unitamente alla condizione di confinamento, abbiano influito sul benessere psicologico e lavorativo e sul senso di autoefficacia degli e delle insegnanti

    Exchanging experiences on modal interchange policies to foster a low-carbon urban mobility. The match-up methodology

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    This e-book aims at describing in detail the learning process developed within MATCH-UP to stimulate the exchange of experience mainly at interregional and local levels. It can be a useful reference for those who are interested in establishing an exchange of experience process among peers that are dealing with the same topics and co-designing effective and tailored solutions at local level with the active involvement of the local Stakeholders who are key players for achieving good results

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