Search results for " Ingegneri"
showing 10 items of 809 documents
Role of collaborative supply chain of innovation in firm’s performance
2014
This work depicts the Supply Chain of Innovation (SCoI) including only those kinds of relationships related to the purchase and selling of R&D commodities. The theoretical framework represents the propensity of a firm in improving its innovation performance thanks to its collaboration experience and positioning in SCoI. We validate our theoretical framework on a sample of 208 biotechnology companies involved in 814 SCoI agreements. Our results show the positive direct impact of SCoI collaboration experience on innovation performance and a mediating role of positioning in SCoI on the abovementioned link.
Radionuclides in wastewater treatment plants: monitoring of Sicilian plants.
2015
Three Sicilian wastewater treatment plants were monitored to assess the occurrence and the behaviour of radionuclides. Two sampling campaigns (screening and long-term) were carried out during which liquid and solid samples have been analysed. It was found that 131I mostly occurred in the samples analysed during the screening campaign (43% of the analysed samples contained 131I). High 131I specific activity was found in the mixed liquor, recycled sludge and dehydrated sludge samples. This finding was mainly due to the tendency of 131I to be associated with solid particles. During the long-term sampling campaign an influence of the sludge retention time (SRT) on the 131I behaviour was found. …
Resilience practices and patient safety: a multiple case study
2017
Organizations’ resiliency is receiving more and more attention within the operations management academic community because of the general awareness regarding the impossibility to prevent any kind of failure/disaster that may occur in whatever work system. Although healthcare organizations everyday manage those operational failures which treat the patient safety, in healthcare management domain there is a “lack of knowledge” about resilience practices, even if few authors have studied similar concepts, such as the work-around practices. In this paper we present an exploratory study we have conducted within two Italian hospitals to comprehend the main capabilities which enable healthcare resi…
The town as a concentrated source of reclaimable water and materials. Opportunities for an engineered conservation strategy.
2015
A fierce theoretical debate is ongoing about the human species’ existence itself being sustainable for Earth and for living world. In the meanwhile cities, which are considered to concentrate the mankind’s ecological footprints, are steadily growing and gathering huge populations worldwide. This paper assumes that margins do exist to relieve the man’s burden on Nature to some extent, and that – regardless of our general concept of the matter – these margins should be exploited. The focus of this note is on beneficial use of waste water and waste to spare new resources and to create filter areas close to towns or belts around them. A brief reference is made to some official declarations and …
TECNICHE DI BIOREMEDIATION DI SUOLI CONTAMINATI DA IDROCARBURI
2022
A bottom up approach to evaluate risk in network environment
2008
Firms dependence on environment has been contended in various way one of the most suited is the collaboration among other firms in order to realize extra rents. Firm dependence on environment is particularly crucial in sector characterised by complex technology or complex product (product requiring an articulated supply chain) that make the market instable. In this scenario the alliance, whatever is the inter-organizational solution chosen, causes new forms of dependence that are the origins of network risks. In order to evaluate correctly the extra rents a long range perspective has to be assumed and a financial analysis has to be followed. To evaluate expected cash flows it needs to known…
erformances of a granular sequencing batch reactor (GSBR)
2006
I reattori aerobici granulari: esperienze con refluo reale e sintetico
2008
La granulazione aerobica può essere ottenuta nei sistemi con alimentazione discontinua in due differenti configurazioni impiantistiche, che permettono di realizzare i necessari sforzi tangenziali per la formazione dei granuli: il Sequencing Batch Bubble Column Reactor (SBBC) e il Sequencing Batch Airlift Reactor (SBAR). Lo scopo di questo studio è stato quello di osservare il fenomeno della granulazione aerobica e valutare il ruolo del tempo di sedimentazione durante la fase di selezione e formazione dei granuli. L’intera sperimentazione è stata suddivisa in due diverse campagne sperimentali in cui è stato utilizzato refluo sintetico, nella prima, e refluo reale, nella seconda. Al fine di e…
RIMOZIONE COMBINATA DI CARBONIO E NUTRIENTI IN DUE REATTORI SBR GRANULARI: EFFETTO DELLA DIMENSIONE DEI GRANULI
2015
Sono state investigate le performance di due impianti SBR (Sequencing Batch Reactor), alimentati con refluo sintetico a base di acetato di sodio e funzionanti con due differenti tipi di fango aerobico granulare, in termini di dimensione media dei granuli. In particolare, è stato analizzato l’impatto della differente dimensione dei granuli sul processo di nitrificazione e denitrificazione simultanea (Simultaneous Nitrification Denitrification, SND) e sulla rimozione biologica del fosforo. Allo scopo di valutare l’efficienza di tale tipo di processo, sono state applicate differenti strategie di coltivazione e condizioni operative, in termini di carico organico (COD 600-1200 mg/L) e azoto (60-…
High salinity wastewater treatment by membrane bioreactors
2020
Abstract This chapter reviews the state of the art regarding the use of membrane bioreactor (MBR) systems for saline wastewater treatment. In particular, a comprehensive review is presented discussing the most adopted MBR configurations for the treatment of saline wastewater. Further, the chapter discusses the main effects of salinity on the biological performance, kinetic parameters, fouling development, sludge rheological features, and greenhouse gas (GHG) production. Literature results show that there is a significant effect of the salinity (and/or salinity variations) on the biological performance and membrane filtration. Specifically, it was found that a gradual salinity increase, carr…