Search results for "QR"
showing 10 items of 591 documents
Performance of the auxotrophic Saccharomyces cerevisiae BY4741 as host for the production of IL-1β in aerated fed-batch reactor: role of ACA suppleme…
2009
Abstract Background Saccharomyces cerevisiae BY4741 is an auxotrophic commonly used strain. In this work it has been used as host for the expression and secretion of human interleukin-1β (IL1β), using the cell wall protein Pir4 as fusion partner. To achieve high cell density and, consequently, high product yield, BY4741 [PIR4-IL1β] was cultured in an aerated fed-batch reactor, using a defined mineral medium supplemented with casamino acids as ACA (auxotrophy-complementing amino acid) source. Also the S. cerevisiae mutant BY4741 Δyca1 [PIR4-IL1β], carrying the deletion of the YCA1 gene coding for a caspase-like protein involved in the apoptotic response, was cultured in aerated fed-batch rea…
Elucidating the picocyanobacteria salinity divide through ecogenomics of new freshwater isolates
2022
Abstract Background Cyanobacteria are the major prokaryotic primary producers occupying a range of aquatic habitats worldwide that differ in levels of salinity, making them a group of interest to study one of the major unresolved conundrums in aquatic microbiology which is what distinguishes a marine microbe from a freshwater one? We address this question using ecogenomics of a group of picocyanobacteria (cluster 5) that have recently evolved to inhabit geographically disparate salinity niches. Our analysis is made possible by the sequencing of 58 new genomes from freshwater representatives of this group that are presented here, representing a 6-fold increase in the available genomic data. …
Novel Glutamate–Putrescine Ligase Activity in Haloferax mediterranei: A New Function for glnA-2 Gene
2021
This article belongs to the Section Cellular Biochemistry.
Salmonella bongori Provides Insights into the Evolution of the Salmonellae
2011
The genus Salmonella contains two species, S. bongori and S. enterica. Compared to the well-studied S. enterica there is a marked lack of information regarding the genetic makeup and diversity of S. bongori. S. bongori has been found predominantly associated with cold-blooded animals, but it can infect humans. To define the phylogeny of this species, and compare it to S. enterica, we have sequenced 28 isolates representing most of the known diversity of S. bongori. This cross-species analysis allowed us to confidently differentiate ancestral functions from those acquired following speciation, which include both metabolic and virulence-associated capacities. We show that, although S. bongori…
L'etichettatura dei prodotti agroalimentari nella percezione della qualità secondo i consumatori.
2014
Le informazioni sulle certificazioni di qualità o sulla filiera di produzione, confezionamento e vendita sono, per i consumatori, elementi importanti per individuare prodotti ritenuti sicuri. Tali informazioni, se riportate in etichetta, sono determinanti nelle scelte d’acquisto di taluni segmenti di mercato. L’obiettivo di questo studio è conoscere in che misura la rintracciabilità dei prodotti alimentari, rivelata ai consumatori attraverso le etichette, possa essere considerata un elemento rappresentativo della qualità e della sicurezza, anche attraverso l’utilizzo di strumenti innovativi quale il QR code. Sono stati individuati due Capoluoghi italiani, sulla base della suddivisione ISTAT…
Thermal adaptation and physiological responses to environmental stress in tunicates
2017
Understanding the multifaceted nature of environmental fluctuations is crucial to predicting the physiological adjustments utilised by organisms in resisting or adapting to changes over time. Here we investigate the effects of 2 environmental stressors on tunicates, whose fitness can have important repercussions on the quality of habitat. Specifically, we report respiration rate (RR), clearance rate (CR), and assimilation efficiency (AE) of the ascidian Styela plicata in response to a range of temperatures and varying food availability. Temperature-dependent RR was observed only within a portion of the thermal window of the species. Significant differences in clearance rates were detected a…
La valutazione della VQR per l’Area 08A: problematicità dei giudizi
2019
Il tema che si intende affrontare riguarda, soprattutto, le ricadute delle diverse modalità e forme della valutazione Anvur nel lavoro di studiosi e di ricercatori. Se nessuno mette o potrà mettere in discussione la necessità che gli esiti del nostro operato nel campo della ricerca sia sottoposto a periodici esercizi di valutazione, al contrario, è giusto dibattere sui metodi utilizzati a tal fine. In particolare, è ormai acclarata la tendenza ad un certo condizionamento della valutazione bibliometrica su quella non bibliometrica. Un’influenza che non tiene conto di un dato di fondo: tra i due modi di valutazione vi è forse una contrapposizione, difficilmente appianabile, di natura epistemi…
Platforms for Human-Human Interaction in Large Social Events
2012
In this paper we present the evolution of QRouteMe, an information system built to provide people with rich user experiences when attending museums or exhibits. QRouteMe is a platform for indirect, mediated, and facilitated interactions among humans during large social events, by means of a wide variety of concurrent technologies and devices. The system evolution is analyzed according to the new human-to-human interaction (HHI) research domain. In particular, we show how QRouteMe has been adapted for the different events in which it has been used. We analyze and describe social interaction aspects during the events and we discuss some data and results. Finally we outline some possible futur…
DESIGN METHODOLOGIES TO ENABLE COLLECTIVE INTELLIGENCE IN PLATFORMS FOR HUMAN-HUMAN INTERACTION
2014
La valutazione nei settori disciplinari dell'area di Scienze dell'antichità
2019
Si illustrano gli aspetti salienti della valutazione della ricerca nell'ambito dell' Antichistica, i risultati della VQR, e le peculiarità dei prodotti dell'area 10. The main aspects of the evaluation of research in the field of Antiquities, the results of the VQR, and the peculiarities of the products of the area 10 are illustrated.