1,008 research outputs found
Fig. 1 in Salix ×marchettii (Salicaceae), a new nothospecies from the Apuan Alps (Northern Tuscany, Central Italy)
No full textFig. 1. – Salix ×marchettii M. Merli & F. Mart. A. Male specimen. B. Female specimen.Published as part of Merli, Marco & Martini, Fabrizio, 2017, Salix ×marchettii (Salicaceae), a new nothospecies from the Apuan Alps (Northern Tuscany, Central Italy), pp. 339-343 in Candollea 72 (2) on page 341, DOI: 10.15553/c2017v722a11, http://zenodo.org/record/568446
NUOVE METODOLOGIE DI STUDIO DELL'EFFICIENZA DI USO DELL'ACQUA IN VITIS VINIFERA L.
No full textA seguito degli scenari imposti dal cambio climatico il miglioramento dell’efficienza di uso dell’acqua (WUE) delle colture sono divenuti obiettivi fondamentali da perseguire. Il seguente studio pone al centro la WUE come parametro fisiologico cardine nella definizione del comportamento della vite in caso di riduzione della disponibilità idrica e si pone come obiettivo di valutarne le diverse forme di espressione, per individuare quale di queste sia meglio correlata alle performance delle varietà considerate, al fine di ottenere dati oggettivi che consentano di derivare consigli per la messa a punto di una più idonea tecnica irrigua. Nel triennio è stata valutata la risposta fisiologica di Sangiovese e Montepulciano, sottoposti a stress idrico di differente intensità in fasi fenologiche diverse. Inoltre, sono state saggiate le potenzialità genetiche della vite in condizioni di limitata disponibilità idrica attraverso il confronto delle performance di viti di Sangiovese innestate su due diversi portinnesti, ovvero confrontando un genotipo tradizionalmente sensibile, SO4, con uno selezionato in funzione della resistenza allo stress idrico, ovvero M4. Tutte le ricerche sono state condotte implementando apparati di misura innovativi che hanno permesso di ottenere la stima dell’efficienza di uso dell’acqua dell’intera chioma per la durata complessiva di ciascuna prova, poi confrontata con le forme più usuali di espressione di questo parametro fisiologico. Il lavoro rimette in discussione la metodologia e le deduzioni che si possono trarre da determinazioni di WUE condotte su singola foglia che, nella grande maggioranza dei casi, non hanno trovato corrispondenza nelle misure che hanno interessato l’intera chioma.Within the current climate change scenario, the optimization of irrigation water use in vineyards by improving its water use efficiency (WUE) is a core subject of interest to assure sustainability in viticulture. The following research focuses on the physiological parameter WUE as pivotal in defining the behavior of grapevine under water stress. The aim is to assess the various forms of expression of the parameter, to identify which of these better correlates to the performance of the considered varieties, in order to obtain objective data and to derive recommendations for a more suitable irrigation technique. Over three years we evaluated physiological responses of Sangiovese and Montepulciano vines subjected to progressive water deficit either pre and post-veraison. Moreover, the genetic potential of grapevine under conditions of limited water availability was tested through the comparison of the performance of Sangiovese vines grafted on two different rootstocks; SO4, a traditional susceptible genotype and M4, a recently selected scion supposed to be tolerant to water stress. During the research we also designed, implemented and tested an innovative apparatus able to run automated water deficit experiments and to concurrently monitor whole canopy even for a season long time frame. These measurements were compared to traditional single leaf readings and a general conclusion was that, in most cases, single leaf WUE assessment did not match with the measures obtained from the whole canopy enclosure system
Development of synthetic wastewater from the tomato industry for membrane processing purposes
No full text[No abstract available
Optimization of a nanofiltration membrane process for tomato industry wastewater effluent treatment
No full textThe wastewater stream produced during tomato manufacturing is characterized by a dark color and bad smell, and is heavily polluted by organics, suspended solids and ground particles. The concentration of pollutants in the effluent can vary considerably with time and space due to the changes in the harvested fruit composition and season. A discharge in the municipal sewage system of these streams is not directly possible because of the high organic contents above the legally tolerated limits. This work deals with the treatment and purification of the wastewater stream from the tomato industry by a biological pretreatment step and a batch nanofiltration process step. For the latter, critical fluxes were measured at different recovery levels. This permits applying membrane process optimization methods based on the critical flux. The experiments show that the purification of the wastewater up to a water compatible with the municipal sewer system requirements is possible, with a recovery rate of 90%. Shortterm fouling issues may be avoided at permeate fluxes about or below 8.2 l h!1 m2
Technical optimization of batch membrane processes for the purification from residual heavy metal contamination of a pretreated marine sediment
No full textIn this paper an innovative process for the purification from heavy metals of marine
sediments by membrane processes is presented. Since membranes hardly work on raw
streams, especially on those having high suspended solids value such as marine
sediments, a pretreatment process is necessary. In the examined case, centrifugation by
a hydrocyclone appeared to be very efficient in removing the sand and was adopted.
The remaining stream (silt) was then processed by a batch membrane process, capable
to separate the organic and inorganic pollutants from the water. Pilot tests were carried
out in order to estimate the membrane performances, such as the maximum recovery
value, the typical rejection values, the permeate and the critical fluxes
Virtual acoustic reconstruction of the Miners’ Theatre in Idrija (Slovenia)
No full textThis study reports history and the original architectural design of the Miners’ Theatre in Idrija. This theatre is usually considered to be the oldest such building in Slovenia and in 2001 it was declared a cultural monument of national importance. The building shape was typical of numerous small stand-alone theatres throughout Central Europe in the 18th century. The original design was later changed several times until it has reached the actual aspect. To analyse the acoustic characteristics of the current room (often named “Film Theatre”), an acoustic survey was carried out and several acoustic parameters defined in the ISO 3382-1 standard, were calculated and analysed. To study the acoustic characteristics of the theatre in its original shape, a numerical model was realized and properly validated. The simulations of three different scenarios were performed and the results obtained from the simulation have been analysed and commented
Protection and restoration of natural environments through sustainable agriculture approaches
No full textIntensive agriculture has resulted in the loss of biodiversity and the specialist flora and fauna associated with natural environments, particularly wetlands. Landscape change has been another environmental development speeded up by the common agriculture policy, as a consequence of the intensification of agriculture. The destruction of hedgerows, stone walls and ditches and the drainage of wetlands has contributed to the loss of valuable habitats. Intensification in certain areas has led to an excessive use of water resources and to increased soil erosion. In this work techniques employed to restore and re-create these environments through sustainable agriculture approaches are reviewed
Reply to: "The possible role of anti-methicillin-resistant Staphylococus aureus antimicrobial agents in spontaneous bacterial peritonitis"
No full textLetter answering to a comment about an article
Nota sul Silio 'politico' negli epigrammi di Marziale
No full textIn Martial’s epigrams Silius Italicus is portrayed as a man of learning, author of the Punica and admirer of Vergil’s works, but also as a public figure and a former consul of Rome. My paper focuses on the epigrams devoted to the ‘political’ Silius, and suggests to relate them mainly to a certain stage in Silius Italicus’ life and to a specific communication strateg
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