Plant patch hydrodynamics in streams : Mean flow, turbulence, and drag forces

Peer reviewedPreprin

ANALISI COSTO-EFFICACIA DELLA LOBECTOMIA VIDEOASSISTITA E NOSTRA ESPERIENZA

La Chirurgia Toracica Video-Assistita (Video-Assisted Thoracic Surgery-VATS) è stata senza dubbio il più rilevante progresso nella chirurgia toracica dell'ultimo mezzo secolo. I pazienti sono oramai ben consapevoli dei vantaggi delle tecniche mini-invasive in ogni campo della chirurgia. In tutto il mondo, sono sempre di più quei pazienti che, dovendo sottoporsi a interventi di chirurgia resettiva polmonare, richiedono operazioni in VATS. La chirurgia toracoscopica video-assitita ha apportato numerosi vantaggi, non solo per il chirurgo ma anche per il paziente: la riduzione del traumatismo sulla parete toracica, un recupero funzionale più precoce ed un miglior controllo del dolore post- operatorio e, ultimo ma non meno importante, un minor impatto estetico rispetto agli accessi chirurgici più estesi, quali la toracotomia o la sternotomia. Questo lavoro si propone di fornire una panoramica di come la lobectomia in VATS è evoluta nel corso degli ultimi due decenni, da tecnica di nicchia a pilastro fondamentale del bagaglio del chirurgo toracico, di descrivere i principali approcci chirurgici e di valutare l’impatto economico di questa tecnica, aspetto sempre più preponderante nell’attuale scenario economico europeo, analizzando e riportando l'esperienza del nostro centro

Motivació i metodologies utilitzades en Ciències Socials en Educació Primària a escoles de Vinaròs, Castelló

Treball Final de Grau en Mestre o Mestra d'Educació Primària. Codi: MP1040. Curs acadèmic: 2018/201

Explorative search of distributed bio-data to answer complex biomedical questions

Background The huge amount of biomedical-molecular data increasingly produced is providing scientists with potentially valuable information. Yet, such data quantity makes difficult to find and extract those data that are most reliable and most related to the biomedical questions to be answered, which are increasingly complex and often involve many different biomedical-molecular aspects. Such questions can be addressed only by comprehensively searching and exploring different types of data, which frequently are ordered and provided by different data sources. Search Computing has been proposed for the management and integration of ranked results from heterogeneous search services. Here, we present its novel application to the explorative search of distributed biomedical-molecular data and the integration of the search results to answer complex biomedical questions. Results A set of available bioinformatics search services has been modelled and registered in the Search Computing framework, and a Bioinformatics Search Computing application (Bio-SeCo) using such services has been created and made publicly available at http://www.bioinformatics.deib.polimi.it/bio-seco/seco/. It offers an integrated environment which eases search, exploration and ranking-aware combination of heterogeneous data provided by the available registered services, and supplies global results that can support answering complex multi-topic biomedical questions. Conclusions By using Bio-SeCo, scientists can explore the very large and very heterogeneous biomedical-molecular data available. They can easily make different explorative search attempts, inspect obtained results, select the most appropriate, expand or refine them and move forward and backward in the construction of a global complex biomedical query on multiple distributed sources that could eventually find the most relevant results. Thus, it provides an extremely useful automated support for exploratory integrated bio search, which is fundamental for Life Science data driven knowledge discovery

Material residence time in marine canopies under wave-driven flows

© Copyright © 2020 Abdolahpour, Ghisalberti, McMahon and Lavery. Coastal canopies (e.g., seagrasses, coral reefs, and kelp forests) are vitally important ecosystems that provide a range of ecological services (e.g., oxygen production, sediment stabilization and trapping, and recycling of nutrients). The long-term health, productivity, and survival of these canopies rely heavily on the residence time of ecologically-significant materials in these environments. Recent studies have shown that submerged canopies induce a strong mean current over the canopy top, even in purely wave-dominated environments. Thus, in addition to vertical mixing, the horizontal flushing of materials (resulting from these canopy-induced currents) will dictate rates of water renewal and, therefore, residence time in wave-dominated flows over submerged canopies. Building on this recently-improved understanding, this paper provides (for the first time) a framework for estimation of material residence time (Tres) and its variation with core system parameters, including both canopy and wave characteristics. This is done through consideration of a Péclet number (Pe) which is the ratio of mixing to advective time scales. Prediction of residence time for a wide and realistic range of marine canopies (and a correspondingly wide range of Pe) reveals that while Tres decreases with wave height and increases with water depth, it has a complex relationship with canopy density and height. Importantly, residence time can vary from orders of seconds to hours, depending on wave and canopy properties. This has considerable ecological implications for marine canopies through the direct impact on a range of chemical and biogeochemical processes within the canopy. The framework presented here represents a critical step forward in being able to predict residence time in coastal canopies and test the interacting set of factors that influence the residence time in real, complex systems

Pathways for the amplification of agroecology in African sustainable urban agriculture

A growing awareness that highly intensified agricultural systems have made a substantial worldwide contribution to the worsening of the resilience capacity of natural ecosystems has, over the last twenty years, brought general attention to agroecological management models. This aspect is even more evident in industrial agriculture, which is based on the use of multiple chemical products derived from non-natural synthesis. In more developed countries, a new idea of ecology linked to agricultural production has been increasingly developed and, for this reason, there has been a greater diffusion of differentiated agricultural models taking into consideration the environmental impact of production choices and policies addressed to the conservation of natural resources. In urban agricultural production, it is even more important to adopt resilient production models that, in addition to developing responsible production paths and allowing a positive connection with the needs of consumers, guarantees reasonable and positive behaviors respecting the environment in which most of the urban population lives; in other words, the implementation of goal 12 of the sustainable development goals (SDG #12 Responsible Production and Consumption) of the United Nations. In this work, we report some case studies inspired by the activities carried out by the Slow Food Association in Africa and demonstrate the importance of agroecological models in small-scale agricultural systems, related to the development of school and community gardens in small urban areas of different African countries, as a tool for integrating agricultural activities aimed at social resilience and the conservation of ecosystems

GIOVANNI DE VERGOTTINI E L\u27ISTRIA

L\u27 autore traccia un breve ma quanto mai esplicativo profilo di Giovanni De Vergottini (di Parenzo), storico rigoroso ed estremamente aderente, nella ricostruzione degli eventi, alle fonti utilizzate. Prendendo spunto dalla rilettura dei suoi scri tti (in particolare i Lineamenti storici della costituzione politica dell\u27 !stria durante /\u27alto medioevo, 1924-25) si cerca di comprendere sia lo stato d\u27animo che lo dominava sia i condizionamenti metodici che ne ispiravano l\u27 approccio storiografìco nella ricostruzione delle vicende storiche istriane.U ovom je prilogu sazeto, ali izrazajno, ocrtan lik Q_ De Vergottinija iz Poreca, povjesnicara koji se strogo protivio svakom metodoloskom aprioristickom postupku sto se ne temelji na izvorima_ Polazeéi od ponovnog razmatranja njegovih rasprava osobito njegova najvaznijeg djela Lineamenti storici della costituzione politica dell\u27 /stria durante l\u27alto medioevo (»Povijesni prikaz politickog ustrojstva lstre tijekom ranog Srednjeg vijeka«), autor pokusava dokuciti kako njegovo dusevno stanje, tako i metodoloske pretpostavke koji su potakli njegov historiografski pristup pri rekonstrukciji povijesnih zbivanja u Istri_ Filoloska akribija i siroka erudicija, koje su obiljezile njegove metode istrazivanja i tehniku rekonstrukcije kod ovog ée znanstvenika onemoguéiti identifikaciju bilo kakve namjere da se povijest u potpunosti podredi politici. Zauzimanje za nacionalno pitanje, sto je bilo razumljivo sa stajalista podrijetla njegove obitelji, skolovanja i osobnih zivotnih iskustava, nije ga sprijecilo da postane povjesnicarem koji rekonstruira zbivanja iz postojeéih izvora, pribojavajuéi se, dapace, i vise od ostalih utjecaja nacionalizma

fisica aristotelica e onnipotenza di dio in guglielmo di ockham

A Física aristotélica é questionada em diversos de seus princípios por autores dos séculos XIII e XN, embora eles ainda a aceitem enquanto todo. Ao tratar do problema do poder absoluto de Deus, Ockham afasta-se tanto do "princípio de plenitude" do mundo neoplatônico, como também do "mundo fechado" de Aristóteles