188 research outputs found
The environmental vulnerability of the coastal zone and the importance of the cartography
No full textPoste
Il potenziale ruolo del Gnl nell’incremento della concorrenzialità dei mercati europei e nella sicurezza di approvvigionamento energetico
No full textNo abstract availabl
The evolution of the Marche Region coastal zone and the climate change
No full textCoastal Evolution in Marche Region and regional Planning.
The map and the sections show clearly oscilaltion of the ancient shorelines around the present day position of the shoreline. The situation changes going northwards in presence of the Emilia sandy littoral and the Venice lagoon with the Po plain on the back
Hydropower production and environmental regulation: opting for a performance-based tax approach
No full textThis paper discusses the case for reforming the actual mechanism for charging water abstractions for hydropower production in Italy and proposes to introduce a performance-based environmental fee. This should be able, on the one hand, to internalize the environmental costs that hydropower production causes and, on the other, to stimulate producers to opt for more environment-friendly management of hydropower plants. We think, in fact, that the re-issue of several expired hydropower concessions represents an opportunity to redefine the taxation system to which hydropower is currently subject to, in order to introduce finally a form of environmental taxation coherent with the Water Framework Directive. In particular, the proposed fee is a real environmental tax, as it aims at changing the environmentally impacting behavior by increasing the marginal cost of damaging river ecosystems. Therefore, it is equitable, as it does not tax all producers the same way, but according to the impacts that their production generates. Finally, it is immediately applicable, as it is based on the successful experience of performance-based regulation in several other sectors
From Organic Waste to Bioenergy: Efficiency, Reliability and Safety Aspects Relating to Biogas Production, Purification and Utilization
No full textAnaerobic digestion (AD) is a promising and consolidated biological process used to treat organic solid wastes and produce biogas, recovering both energy and rich in nitrogen material (digestate) while reducing the amount of waste to be disposed. Despite the experience gained over the last years, still represent critical points for AD the efficiency as well as the reliability
f the process and the safety of the biogas storage and utilization. Biogas is a mixture of different organic and inorganic gases. A lack of knowledge of proper biogas management could result into accidents due to the formation of explosive mixture both inside and outside the buildings. These relevant aspects are discussed and for each of them is provided a detailed description and a critical analysis of the modern systems used to reduce the uncertainty on the expected results and also to increase the safety of biogas production, purification and utilization
Sustainable asphalt mastics made up recycling waste as filler
No full textThe continuous growth of waste is generating worldwide more and more increasing related environmental concerns. Anything that is not recycled or recuperated from waste represents a loss of raw materials and other production factors used in the manufacture, transport and consumer phases of the product. This research explored the potential of three waste namely Construction and Demolition (CD) waste, Fly Ash (FA), and Jet Grouting (JG) waste as fillers in comparison to the traditional limestone one for making hot asphalt mastics for road pavement, through a rheological analysis and environmental compatibility tests towards the release of potentially toxic elements. A total of eight asphalt mastics were prepared by using two filler-to-binder weight ratios (f/b) of 0.5 and 1 for blending each filler with a neat bitumen 50/70 penetration grade. The Frequency Sweep test and the Multiple Stress Creep and Recovery (MSCR) test were carried out to investigate the rheological properties of the asphalt mastics. Asphalt mastics containing FA and JG fillers were found to be more mechanically and environmentally efficient than traditional limestone mastic in particular by adopting an f/b equal to 1 where it was observed higher complex shear modulus values, G*, (on average 50% compared to the traditional asphalt mastic) and lower non-recoverable creep compliance values, Jnr, (on average 35% compared to the traditional asphalt mastic) at all test temperatures investigated. Based on the suggested ranking methodology, CD emerged as the filler performing in the same way of the traditional one. All the waste containing mastics, showed up noticeable environmental compatibility, being the potentially toxic elements completely immobilized into the mastics’ structure e practically not releasable into acidic water, highlighting the waste recycling for road pavements as primary strategy to immobilize hazardous wastes
The evolution and safeguard of the Adriatic coastal zone
No full textStudy on the evolution of the Adriatic coastal zone
The AGILE Silicon Tracker: an innovative gamma-ray instrument for space
No full textAGILE (Light Imager for Gamma-ray Astrophysics) is the first small scientific mission of ASI, the Italian Space Agency. It is a light (100 kg for the scientific instrument) satellite for the detection of gamma-ray sources in the energy range 30 MeV-50 GeV within a large field of view (1 of the sky). It is planned to be operational in the years 2003-2006, a period in which no other gamma-ray mission in the same energy range is foreseen.
AGILE is made of a silicon tungsten tracker, a CsI(Tl) minicalorimeter (1.5X(0)), an anticoincidence system of segmented plastic scintillators and a X-ray imaging detector sensitive in the 10-40 keV range. The tracker consists of 14 planes, each of them made of two layers of 16 single-sided, AC coupled, 410 mum thick, 9.5 x 9.5 cm(2) silicon detectors with a readout pitch of 242 mum and a floating strip. The readout ASIC is the TAA1, an analog-digital, low noise, self-triggering ASIC used in a very low power configuration (<400 μW/channel) with full analog readout. The trigger of the satellite is given by the tracker. The total number of readout channels is around 43 000.
We present a detailed description of the tracker, its trigger and readout logic, its assembly procedures and the prototype performance in several testbeam periods at the CERN PS
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