197,616 research outputs found
Il lanificio Picco al Bivio. Una strategia per rigenerare uno spazio di archeologia industriale attraverso una rete di itinerari culturali nel paesaggio biellese, tra fabbrica e natura
No full textRethinking an abandoned nineteenth-century industrial building, inserted into a fragile althoug rich in potential land, is apparently an impossible challenge. The starting point is the link between the single artifact, divided into parts - each one to be transformed and furtherly implemented – and the surrounding landscape, considering the building as a node of the territorial network: the communication routes, the rivers, the intangible historical and cultural networks weave a plot that enables the connections to other points of interest already on site.. In such territorial context, industrial tourism based on bicycle routes might be the new green clue in the strategy of rebirth. The wool mill, revitalized by contemporary functions, possibly implemented in the future with new uses such as hospitality, artistic residence or education, is at the center of a tangible and intangible network, leading to rethink historical industrial sites as a great opportunity to discover this important industrial archaeology district
Manual de catalogación automatizada
No full textCapítulo 1. Evolución del catálogo en línea /Ana M. Martínez Tamayo. -- Capítulo 2. Sistemas integrados de gestión de bibliotecas / Paola Picco, José Fager, Natalia Aguirre. -- Capítulo 3. Formato MARC21 : su estructura y codificación / Paola Picco. -- Capítulo 4. Catalogación y análisis de obras monográficas / Natalia Aguirre, Paola Picco. -- Capítulo 5. Protocolos y estándares para la gestión de la información en la red / José Fager. -- Capítulo 6. Arquitectura de la información, usabilidad, accesibilidad : conceptos clave a considerar cuando las biliotecas se vuelcan a entornos web / Natalia Aguirre Liguera
Can this approach be useful to detect, to classify and to filter Large Wood from TLS data clouds?
No full textThe calculation of differences between subsequent DEMs (difference of DEMs, DoD) is a commonly applied
method to analyze and quantify morphological changes occurred along a riverine environment. The higher levels
of uncertainty in the DoD computation are, typically, localized in area with low point density, steepest slopes
and highest roughness values. A common source of roughness in riverine environment is the presence of Large
Wood (LW). In turn, in certain conditions, the roughness map can help to detect the LW position. The aim of this
research is to define a new approach to detect the LW into DEMs, as to permit its removal from TLS datasets.
The study was carried out along the Blanco River (Southern Chile), a fourth order river un-impacted by human
pressure. After the 2008 Chaiten volcanic eruption, and the subsequent floods, the Blanco River has been severely
affected by sediment and LW input. Huge amount of tephra (up to 8 m) was deposited into the river channel
and over 3.5 km2 of evergreen forest. This event generated considerable changes in geomorphological settings,
and a considerable input of LW into the active channel (100 m3 /ha). Three TLS surveys were carried out along
a 2.2 km-long study reach in 2013, 2014 and 2015, respectively. Thanks to the high point cloud density, has
been possible to obtain high resolution DEMs with 0.07 x 0.07 m pixel size. The study area is characterized by
consistent differences between grainsize characteristics (D16=0.007 m; D50=0.070 m; D84=0.156 m), and LW
diameter (D) and length (L) (Dmax=1.20 m; Dmin= 0.10 m; Dmean= 0.25 m; Lmin=1.00 m; Lmean= 3.36 m).
These differences in dimension permit us to define the distribution of LW from the roughness map. Using then, the
“Select by Location” tool in ESRI ArcGIS environment has been possible to remove the LW from the DEMs. In
fact, Select by Location tool permit to select features based on their location relative to features in another layers.
Finally, to fill the empty space was used the “Fill miss data holes” tool in the open source “Whitebox Geospatial
Analysis Tools”. In this way has been possible to obtain the DEMs without LW, increasing the precision in the
detection and quantification of geomorphic changes. This research was funded within the Chilean research Project
FONDECYT 1141064 “Effects of vegetation on channel morphodynamics: a multiscale investigation in Chilean
gravel-bed rivers”
The PiCCO Monitor: A Review
No full textAdvanced haemodynamic monitoring remains a cornerstone in the management of the critically ill. While rates of pulmonary artery catheter use have been declining, there has been an increase in the number of alternatives for monitoring cardiac output as well as greater understanding of the methods and criteria with which to compare devices. The PiCCO (Pulse index Continuous Cardiac Output) device is one such alternative, integrating a wide array of both static and dynamic haemodynamic data through a combination of trans-cardiopulmonary thermodilution and pulse contour analysis. The requirement for intra-arterial and central venous catheterisation limits the use of PiCCO to those with evolving critical illness or at high risk of complex and severe haemodynamic derangement. While the accuracy of trans-cardiopulmonary thermodilution as a measure of cardiac output is well established, several other PiCCO measurements require further validation within the context of their intended clinical use. As with all advanced haemodynamic monitoring systems, efficacy in improving patient-centred outcomes has yet to be conclusively demonstrated. The challenge with PiCCO is in improving the understanding of the many variables that can be measured and integrating those that are clinically relevant and adequately validated with appropriate therapeutic interventions
Il nuovo museo dell'automobile di Torino: un'esperienza di recupero integrale - The restoration of the "Museo dell'automobile" in Turin, Italy: a full design experience"
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Environmental acoustic noise observations in Tethys Bay (Terra Nova Bay, Ross Sea, Antarctica)
No full textUnderwater acoustic measurements have been recently carried out in Tethys Bay (Ross Sea, Antarctica) during the XXIX Italian Antarctic Expedition to support acoustic propagation studies in the area and to investigate the environmental noise. Tethys Bay is a small deep cove close to the Antarctic Italian base Mario Zucchelli Station (Baia Terra Nova -74°42' S e 164°07' E) and covered with sea-ice for most of the year. During the period of the experiment (November 2013) the pack-ice had an almost constant thickness of about 2.2 m, so that the measurements were performed deploying the instruments into the sea from holes drilled through the pack ice. The holes were located along the bay axis at a distance of about 500 m each other. The sea depth was around 200 m except for the hole close to the coast, where the sea depth was only 25 m. An hydrophone RESON TC 4032 was located in the outermost hole, while the acoustic source, a transceiver transmitting FSK pulses at 11 kHz, was placed in sequence in the other three holes. Every time, the measurements were performed at 0, 20 and 45 m depth for each configuration. Furthermore during the experiment, sea temperature, salinity and currents, as well as the main meteorological parameters were continuously measured. The analysis here reported mainly focuses on the acquired acoustic passive data. The passive measurements evidenced that the signal was generally dominated by different sounds from seals, which was prevailing on the noise due to human activities. © 2014 IEEE
The ability of PiCCO vesus LiDCO variables to detect changes in cardiac index: a prospective clinical study
No full textAbstract
BACKGROUND: Both PiCCO and LiDCO can provide dynamic preload parameters, pulse pressure variation (PPV) and stroke volume variation (SVV). The PiCCO device also provides a measure of intrathoracic blood volume index (ITBVI). We investigated the agreement between SVV and PPV, as well as the reliability of LiDCO- and PiCCO-measured SVV, PPV and ITBVI, in detecting fluid responsiveness before and after fluid challenge (FC).
METHODS: We performed a prospective clinical study in University Hospital ICU. Nine adult ICU patients with cardiovascular instability were enrolled in the study. All patients were sedated and mechanically ventilated with intermittent positive pressure ventilation. The PiCCO and LiDCO systems were both connected to each patient. The PiCCO pulse waveform system was joined by a 5-French (Fr) thermistor-tipped arterial catheter inserted into the femoral artery. LiDCO measurements were performed through radial artery pulse contour analysis. Fluid challenge was performed using a rapid infusion of 7 mL/kg of 6% hydroxyethylstarch over 30 min.
RESULTS: Measurements of CI, ITBVI, SVV, and PVV were made using both techniques before and after FC. Pre-FC cardiac index (CI) measurements were similar with both devices, although the reading was higher after FC with the PiCCO device (P<0.001). The correlation coefficient between PiCCO-CI and LiDCO-CI was 0.85 (95% CI: 0.69 to 0.93; P<0.001); for P-PPV and L-PPV, it was 0.74 (95% CI: 0.49 to 0.88; P<0.001). Only ITBV had a significant correlation with LiDCO-CI or PiCCO-CI.
CONCLUSION: We found a narrow bias but less accurate precision in cardiac index values measured by a radial artery-site LiDCO catheter and a femoral artery-site PiCCO catheter, with poor agreement between radial and femoral-derived SVV and PPV measurements. ITBVI proved to be the best predictor of fluid responsiveness. The SVV does not seem to be reliable for preload optimization in ICU patients
MULTIDISCIPLINARY STUDIES ON THE RICE BLAST PATHOGEN MAGNAPORTHE GRISEA IN ITALY
No full textThe devastating rice blast disease caused by Magnaporthe grisea has never been eliminated from a region in which the crop is grown.
In temperate areas, Italy included, it can cause marginal losses (2012 and 2013) as well as devastating outbreaks (2008). Even if the Oryza sativa - M. grisea pathosystem has become a model for understanding the molecular basis of plant-fungal interactions, practical answers to some key questions regarding it still have not been found.
Thanks to two Italian National projects, RISINNOVA and POLORISO, knowledge concerning the pathogen and the prevention of the disease has been improved.
A third Project, “Fight to Blast” (2009), by the Vercelli Province, allows the continuous bio-monitoring, from June to August, of an about 110.000 ha production area. This results in a disease-forecast free-service: a real time bulletin based on 4 risk levels, from “0 - no risk of blast” to “3 - high risk” (resistant rice varieties and/or unfavourable to blast field management included).
Those projects are focused on: 1) phytosanitary evaluation of both experimental and cultivated plants; 2) collection of the M. grisea Italian population; 3) aerosporological monitoring of M. grisea spores; 4) optimization of a model (SiRBInt - Simulation of Rice-Blast Interaction), created for temperate rice growing areas.
Results confirm that M. grisea is a pathogen able to change in relation to geographical, environmental and agronomical factors. The collection of the pathogen could be a reference point for the international scientific community involved in rice plant protection and improvement
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