57 research outputs found
Indagine sull'IncidentalitĂ in Corrispondenza dei Cantieri di Ammodernamento di un Tronco dell'Autostrada A3
A new application of capacitive sensors for the nucleic acids revelation
In this paper, a new methodological approach for nucleic acid (DNA, RNA and PNA) detection and analysis is introduced. It is based on
nucleic acids dielectric capacitance measurement performed by capacitive sensors.Asensor system exploiting the properties of miniaturized
arrays of capacitive sensors is illustrated. The sensor array signal is processed by a proper software that converts the signals into an image.
The extraction of information about the properties of nucleic acids is then obtained with classical algorithms for image analysis.
Results show that the sensor can discriminate among different kinds of DNA and can provide an estimate of DNA concentrations
Carbon dioxide emissions from the flat bottom and shallow Nam Theun 2 Reservoir: drawdown area as a neglected pathway to the atmosphere
Freshwater reservoirs are a significant source of CO2 to the atmosphere.
CO2 is known to be emitted at the reservoir surface by diffusion at the
air–water interface and downstream of dams or powerhouses by degassing and
along the river course. In this study, we quantified total CO2 emissions
from the Nam Theun 2 Reservoir (Lao PDR) in the Mekong River watershed. The
study started in May 2009, less than a year after flooding and just a few
months after the maximum level was first reached and lasted until the end of
2013. We tested the hypothesis that soils from the drawdown area would be a
significant contributor to the total CO2 emissions.Total inorganic carbon, dissolved and particulate organic carbon and
CO2 concentrations were measured in 4 pristine rivers of the Nam Theun
watershed, at 9Â stations in the reservoir (vertical profiles) and at 16
stations downstream of the monomictic reservoir on a weekly to monthly
basis. CO2 bubbling was estimated during five field campaigns between
2009 and 2011 and on a weekly monitoring, covering water depths ranging from
0.4 to 16 m and various types of flooded ecosystems in 2012 and 2013. Three
field campaigns in 2010, 2011 and 2013 were dedicated to the soils
description in 21 plots and the quantification of soil CO2 emissions
from the drawdown area. On this basis, we calculated total CO2
emissions from the reservoir and carbon inputs from the tributaries. We
confirm the importance of the flooded stock of organic matter as a source of
carbon (C) fuelling emissions. We show that the drawdown area contributes, depending
on the year, from 40 to 75 % of total annual gross emissions in this
flat and shallow reservoir. Since the CO2 emissions from the drawdown
zone are almost constant throughout the years, the large interannual
variations result from the significant decrease in diffusive fluxes and
downstream emissions between 2010 and 2013. This overlooked pathway in terms
of gross emissions would require an in-depth evaluation for the soil organic matter and
vegetation dynamics to evaluate the actual contribution of this area in
terms of net modification of gas exchange in the footprint of the reservoir,
and how it could evolve in the future
Long-term analysis of cardiac electro-mechanical activity during the two analog lunar missions EMMPOL 10 and EMMPOL 11
DGKa, by regulating atypical PKC, is a key transducer of SDF1a-induced invasive behaviour in breast cancer cells
Temperature dependent photoluminescence of photocatalytically active titania nanopowders
DGKa, by regulating atypical PKC, is a key transducer of SDF1a-induced invasive behaviour in breast cancer cells
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