N. Bonavita

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The daily urinary excretions of total polymeric glycosaminoglycans and of polymeric heparan sulfate have been measured in the urine of juvenile-onset and adult-onset diabetics of both sexes and in those of normal controls. The results indicate that diabetic patients excrete more polymeric heparan sulfate than their controls, either in an absolute amount or(More)
In the refining industry, process control engineers have applied computer based advanced process control (APC) for 30 years and multivariable control for 15 years. Throughout this period, these techniques have relied on modelling product quality variables from laboratory data and process measurements to provide on line feedback variables, Figure 1. Model(More)
Modern process control is based on process modeling. Advanced process control (APC), real time optimization (RTO), process monitoring, operator training simulation, abnormal situation management (ASM) and fault detection and isolation (FDI) are all based on some kind of process modeling. Models are a very effective way to embed “knowledge” in process(More)
Energy is a key component of people’s quality of life and an essential element for “driving” economies. Nowadays, we are totally dependent on an abundant and uninterrupted supply of energy for living and working. It is a key ingredient in all sectors of modern economies But energy consumption is inseparably linked with environmental impact issues: the(More)
The paper aims at describing an application of virtual sensors successfully implemented on a crude unit in the Raffineria di Milazzo refinery. The quality predictions are obtained employing state -of-the-art neural network technology, seamlessly embedded in the e xisting distributed control system. After a brief overview about project goals and process(More)
Model-based advanced process control strategies are common applications in the hydrocarbon processing industry. A close look at the references available in literature reveals that the overwhelming majority of these projects are concentrated in refineries and in some specific petrochemical plants (e.g., ethylene). This is due to the excellent economic(More)
With a large number of oil and gas fields becoming mature, the Upstream industry is facing a new challenge: how to increase, or at least stabilize, production while maintaining available reserves at their present level. As a matter of fact, unstable production in multiphase production systems and pipelines can cause serious and troublesome operational(More)
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