Search results for " INGEGNERIA"
showing 10 items of 796 documents
Strategic drivers influencing the governance of inter-firm relationships between biotechnology and pharmaceutical companies: an empirical survey
2010
This paper investigates the drivers influencing the choice of the governance form in inter-firm relationships (IFRs) between pharmaceutical and biotech companies. By analyzing the relevant literature on the issue, we have located the main drivers that might influence such relationship and a set of hypotheses linking them to governance forms. Such theoretical framework has been empirically tested through a survey conducted among the companies associated to Farmindustria. The result of the empirical analysis provides some interesting insights on how shaping bio-pharmaceutical deals; we found that the developmental stage of the product object of the deal, the existence of previous collaboratio…
Assessing the Feasibility of Wastewater Finishing Treatment by Modified Sand Filters.
2014
The purpose of this study was to investigate the performance of the modified biosand filtration at lab scale. The traditional biosand filter arrangement was modified adding a 2nd stage to the traditional single one. Pre-clarified wastewater first flows down through different filtration material layers; then flows upward in the second stage through other three - and finer - filtration layers including small gravel at the bottom, fine sand and small gravel again. During the experiment timespan (90 days) daily results were collected, analysed and tabled at the laboratories of the Publicly Owned Wastewater Treatment Station – Palermo, operated by AMAP. The analysis included bacteriological para…
A hydrodynamic water quality model for propagation of pollutants in rivers.
2010
Numerical modelling can be a useful tool to assess a receiving water body's quality state. Indeed, the use of mathematical models in river water quality management has become a common practice to show the cause-effect relationship between emissions and water body quality and to design as well as assess the effectiveness of mitigation measures. In the present study, a hydrodynamic river water quality model is presented. The model consists of a quantity and a quality sub-model. The quantity sub-model is based on the Saint Venant equations. The solution of the Saint Venant equations is obtained by means of an explicit scheme based on space-time conservation. The method considers the unificatio…
Optimization of acetate production from citrus wastewater fermentation
2021
Abstract Citrus wastewater is a sugar-rich waste stream suitable for the recovery of energy of material from its treatment. In this study, fermentation of citrus wastewater was carried out to assess the optimal conditions to maximize the bioconversion of the organic substrate into acetate. Unbalanced nutrient (C: N: P 200:0.1:0.1) enabled the highest acetate production. The presence of the particulate organic fraction enabled to obtain a higher acetate concentration regardless the initial COD concentration. Initial pH values higher than 5 did not cause substantial differences on the maximum bioconversion of COD into acetate in Trial 3, whereas pH lower than 5 hindered the hydrolysis process…
Batch Test Evaluation of Four Organic Substrates Suitable for Biological Groundwater Denitrification
2014
Nitrates pollution represents nowadays a serious issue related to the quality of groundwater; continuous growth of industrial-scale agricultures lead to an increase of nitrates content in groundwater in the last years. Several technologies have been validated as capable to promote in situ biological nitrates remediation, such as permeable reactive barriers (PRB), biotrench, biobarriers etc. These technologies are all characterised by the use of organic substrate that act as a slow release carbon source. In free dissolved oxygen absence, such organic carbon is further oxidised, by heterotrophic bacteria naturally present in soil, in compliance to anoxic metabolism by using nitrates bound oxy…
Mathematical Modelling of In-sewer Processes as a Tool for Sewer System Design
2018
The objective of this paper is to evaluate the potential impact of in-sewer processes (COD components transformation and hydrogen sulphide production) on the design of sewer systems. The tool used for such analysis is a mathematical model derived from the WATS model (Wastewater Aerobic/anaerobic Transformation in Sewers) able to describe the processes occurring in the sewer system both under aerobic and anaerobic conditions. The model is applied to three synthetic catchments with, respectively, 10,000, 50,000 and 250,000 inhabitants connected to gravity sewer systems different in terms of type (separate or combined), slope, length, travel time, wastewater temperature. The simulation results…
Biomethane Production from Anaerobic Co-Digestion of Selected Organic Fraction of Municipal Solid Waste (OFMSW) with Sewage Sludge: Effect of the Ino…
2021
The aim of this study was to evaluate the effect of the inoculum to substrate ratio (ISR) and the mixture ratio between organic fraction of municipal solid waste (OFMSW) and sewage sludge (SS) on the methane production potential achievable from anaerobic co-digestion (AcoD). Biochemical Methane Potential (BMP) assays at mesophilic temperature were used to determine the best AcoD configuration for maximizing methane yield and production rate, as well as to address possible synergistic effects. The maximum methane yield was observed at ISR of 1 and 60% OFMSW: 40% SS as co-digestion mixture, whereas the highest methane production rate was achieved at ISR of 2 with the same mixture ratio (207 m…
Bioresource technology for bioenergy, bioproductsenvironmental sustainability.
2022
The 3rd International Conference for Bioresource Technology for Bioenergy, Bioproducts & Environmental Sustainability (BIORESTEC) was held online from 17 to 19 May 2021. More than 120 participants from all over the world participated in this conference. The conference was studded with nine plenary lectures, ten invited lectures as well as more than 50 oral presentations along with several poster presentations. The purpose of the conference was to foster the exchange of knowledge and ideas among researchers in academia and industry as well as policymakers working on various aspects of biorefinery to discuss the progress made during the intervening three years and the latest trends in bio…
Analisi di processo e dinamica della comunità batterica nel trattamento di sedimenti marini con reattori bioslurry
2020
Nella nota sono riportati i risultati di una sperimentazione condotta mediante la messa in esercizio di un reattore bioslurry per il trattamento di sedimenti marini contaminati da idrocarburi. Sono state valutate le performance di processo in termini di rimozione di TPH (86% con velocità di rimozione massima di 36 mgTPH kg-1 d-1) congiuntamente ad altre tipologie di indagini volte ad ottenere maggiori informazioni sulla natura dei processi che si sono sviluppati nel reattore. Nello specifico, è stato utilizzato un approccio di tipo microbiologico mediante l’adozione di una tecnica di sequenziamento di nuova generazione (NGS - Next Generation Sequencing). Dall’analisi dei dati biologici è st…
Ponti di Sicilia (XVI-XIX secolo). Catalogo della mostra
2015
Ad essere esposti sono stati disegni, incisioni, libri, modelli e documenti archivistici, molti dei quali presentati al pubblico per la prima volta, provenienti da archivi, biblioteche, nonché collezioni pubbliche e private, con l'intento di provare a "ricostruire", attraverso le carte le immagini, la storia complessa e stratificata dei ponti siciliani, interpretandone le vicende progettuali e costruttive anche in relazione al più ampio dibattito che ha animato il mondo scientifico europeo, in particolar modo tra XVII e XIX secolo.