Search results for "GRAS"
showing 10 items of 727 documents
Plant arrangement effects on dry matter production and nitrogen fixation of berseem clover-annual reygrass mixture.
2005
Antioxidant Bioactivity of Extracts from Beach Cast Leaves of Posidonia oceanica (L.) Delile
2021
The marine environment is a generous source of biologically active compounds useful for human health. In 50 years, about 25,000 bioactive marine compounds have been identified, with an increase of 5% per year. Peculiar feature of algae and plants is the production of secondary metabolites, such as polyphenols, synthesized as a form of adaptation to environmental stress. Posidonia oceanica is a Mediterranean endemic and dominant seagrass and represents a biologically, ecologically and geologically important marine ecosystem. Within this study, methanolic and ethanolic extracts were generated from fresh and dried Posidonia 
Heuristics and meta-heuristics for 2-layer straight line crossing minimization
2003
AbstractThis paper presents extensive computational experiments to compare 12 heuristics and 2 meta-heuristics for the problem of minimizing straight-line crossings in a 2-layer graph. These experiments show that the performance of the heuristics (largely based on simple ordering rules) drastically deteriorates as the graphs become sparser. A tabu search metaheuristic yields the best results for relatively dense graphs, with a GRASP implementation as close second. Furthermore, the GRASP approach outperforms all other approaches when tackling low-density graphs.
Francesco La Grassa. Disegno e Architettura
2022
Francesco La Grassa fu un architetto e ingegnere siciliano che operò nella prima parte del Novecento tra la Sicilia e Roma: protagonista, sebbene ‘minore’, di una florida stagione architettonica segnata dalla collaborazione con una committenza colta e illuminata, fu uno degli allievi più fedeli di Ernesto Basile. Questo studio non ha interessato l'intera opera del progettista, ma soltanto le architetture non realizzate e quelle scomparse in seguito ad atti di demolizione. Tale selezione di progetti è stata analizzata attraverso un metodo d'indagine basato sull'applicazione degli strumenti della Scienza della Rappresentazione, quali Disegno, Rilievo, Analisi grafica, Modellazione tridimensio…
Über die frühen Werke von Carl Gotthard Graß in der Akademischen Bibliothek der Universität Lettlands, über die Freundschaft, Antiquarismus in der Ge…
2020
Modeling the insect mushroom bodies: application to a delayed match-to-sample task.
2013
Despite their small brains, insects show advanced capabilities in learning and task solving. Flies, honeybees and ants are becoming a reference point in neuroscience and a main source of inspiration for autonomous robot design issues and control algorithms. In particular, honeybees demonstrate to be able to autonomously abstract complex associations and apply them in tasks involving different sensory modalities within the insect brain. Mushroom Bodies (MBs) are worthy of primary attention for understanding memory and learning functions in insects. In fact, even if their main role regards olfactory conditioning, they are involved in many behavioral achievements and learning capabilities, as …
The Influence of Land Surface Temperature in Evapotranspiration Estimated by the S-SEBI Model
2020
Evapotranspiration (ET) is one of the least understood components of the hydrological cycle. Its applications are varied, from agricultural, ecological and hydrological monitoring, to control of the evolution of climate change. The goal of this work was to analyze the influence that uncertainties in the estimate of land surface temperature (Ts) can cause on ET estimates by S-SEBI model in the Pampa biome area. Also, the specificities of native grassland of Pampa biome related to energy balance were analyzed. The results indicate that the daily evapotranspiration is higher when the pixel Ts is lower, which also shows the influence of land use on the variability of ET. The results demonstrate…
TGF-β signalling is required for CD4⁺ T cell homeostasis but dispensable for regulatory T cell function.
2013
Signalling by the cytokine TGF-β regulates mature CD4+ T cell populations but is not involved in the survival and function of regulatory T cells.
Avocado “born in Sicily”, gli agricoltori scommettono su questa produzione
2021
In questo lavoro è stato possibile mettere a confronto la qualità dei frutti di avocado Born in Sicily e di quelli Imported. I risultati ottenuti evidenziano per i frutti raccolti in Sicilia valori più elevati del contenuto di sostanza grassa, di alcune vitamine e minerali rispetto a quelli importati, indicando nell’avocado isolano un frutto ricco di componenti dall’alto valore nutrizionale.
The sanitation service of seagrasses – Dependencies and implications for the estimation of avoided costs
2022
Seagrasses are capable of sanitizing coastal seawaters polluted by fecal bacteria. In this work, the reduction of Enterococci concentration in the presence of a seagrasses’ assemblage (Pacific Ocean) was related to the decrease in the probability of gastroenteritis. A linear model fitted to data extracted from the literature showed a 20% reduction of this probability in the presence of these plants. Seagrass sanitation effect was estimated to allow avoiding ca. 24 million gastroenteritis cases/year, globally. Considering a global cost of gastroenteritis of ca. US$ 372 million/year, the global avoided cost, assuming that the sanitation service was always effective, was estimated to be ca. US…