Search results for " ingegneria"

Brackish water off-grid desalination systems for developing countries

2017

The REvivED water project aims to contribute to overcoming the drinking water challenge through desalination technology. The goal is to produce safe and affordable drinking water with a significantly reduced energy consumption compared to the current state-of-the-art technology. The overall project comprises several systems and applications with twelve pilots in total, ranging from Electrodialysis (ED) small systems for brackish water desalination to larger scale hybrid (RED/ED-RO) systems for sea water desalination. Specific attention is devoted to develop energy efficient and robust brackish water desalination systems for application in developing countries. To reduce the energy consumpti…

HEALTHCARE RESILIENCE: A DYNAMIC CAPABILITIES VIEW FOR EXPLORING THE ROLE OF DIGITAL TECHNOLOGIES AND KNOWLEDGE ABSORPTION IN MANAGING OPERATIONAL FA…

2020

An Object Oriented approach for Flexible Manufacturing Control Systems Analysis and Design using the Unified Modelling Language

2003

In reacting to global competition and rapidly changing customer demands, industrial business organizations have developed a strong interest in flexible automation. The aim of flexible automation focuses on achieving agility in handling uncertainties from internal or external environments. Modeling complex structures, promoting reuse, and shortening the development time cycle are particularly significant aspects in the analysis and design of CIM systems, where heterogeneous elements have to be integrated in a complex control architecture. The design methodology for FMS control software involves the abstraction of an FMS and the estimation of the system performances. The aim of this activity …

Group Buying of Competing Retailers

2011

Illicit drugs consumption evaluation by wastewater-based epidemiology in the urban area of Palermo city (Italy)

2017

Introduction. A wastewater-based epidemiology approach was performed to estimate the drug consumption in Palermo city, the fifth largest city of Italy with a population of 671 696 inhabitants, and to investigate the monthly variability of drug loads in wastewater from different areas of the city. A seven-months detection campaign was conducted at the two wastewater treatment plants of the city. Methods. Following a pre-treatment, 32 samples of wastewater were analyzed by liquid chromatography-tandem mass spectrometry. Results. We estimated a mean cocaine use in Palermo of 0.19 g/day/1000 people, corresponding to 1.90 doses/1000 people and cannabinoids use of 2.85 g/day/1000 people, correspo…

Change Is Good, But Not Too Much: Dynamic Positioning in the Interfirm Network and New Product Development

2018

This research considers the dynamic positioning of an enterprise in an interfirm network and its propensity for new product development. Specifically, we explore how firms reconcile the dichotomy between central and structural holes network positions, by dynamically shifting from a central to a structural holes position (and vice versa) over time. By grounding this research in network dynamics theory, we argue how prior strong central (structural holes) network positions in the interfirm network increase the likelihood the firm will benefit from structural holes (central) positions in the following time period. We also propose that these positions can be modeled by an inverted U-shaped rela…

Biological Stability of Organic Fraction of Municipal Solid Wastes During Composting Processes

2018

The article shows results of monitoring of a Sicilian composting plant (southern Italy). In particular, the biological stability of the organic fraction of municipal solid wastes has been monitored. Two experimental periods have been carried out: (1) plant start-up and (2) first operation period. The biological stability has been evaluated throughout the dynamic respiration index (DRI). This index was determined at different stages of process, for each phase. To our knowledge, no work has been previously published on the monitoring of composting plants in southern Italy. This work has the originality of using the DRI measured data for improving operation of a full-scale composting plant, ra…

Co-treatment of landfill leachate in laboratory-scale sequencing batch reactors: analysis of system performance and biomass activity by means of resp…

2014

Aged or mature leachate, produced by old landfills, can be very refractory; for this reason mature leachate is difficult to treat alone, but it can be co-treated with sewage or domestic wastewater. The aim of the study was to investigate the feasibility of leachate co-treatment with synthetic wastewater, in terms of process performance and biomass activity, by means of respirometric techniques. Two sequencing batch reactors (SBRs), named SBR1 and SBR2, were fed with synthetic wastewater and two different percentages of landfill leachate (respectively 10% and 50% v v−1 in SBR1 and SBR2). The results showed good chemical oxygen demand (COD) removal efficiency for both reactors, with average C…

Prospettive dell'ingegneria stradale

2008

Notiziario della Società Italiana di Infrastrutture Viarie dedicato all'incontro scientifico-culturale con una forte connotazione internazionale intitolato: “Road Engineering Research: New Perspectives for the next generation of researchers”, svolto ad Ancona nel Luglio del 2008.

Disoleatori statici per il trattamento delle acque di piccole e medie utenze

2012

Per rimuovere gli olii dalle acque reflue di piccole e medie utenze si utilizzano molto i disoleatori prefabbricati. Le verifiche di tre disoleatori commerciali di tipo statico hanno suggerito il limite inferiore per il tempo di detenzione idraulica, e quello superiore per il carico superficiale. Le vasche bi-stadio non hanno dimostrato vantaggi sulle mono-stadio.