Search results for "Aerial"
showing 10 items of 156 documents
Lost in space? Using geo-narratives to interpret land use changes in a rural landscape of inner Sicily
2021
Intercropping landscapes characterised by the presence of certain plant features (i.e. old-century olive trees) are usually considered traditional landscapes, extremely important for their biocultural heritage. Olive agroforestry systems were widespread in the past throughout Sicily. Recent evolution processes involving intensification have switched to olive grove monocultures. Here we present ongoing work on the application of geo-narratives to interpret transformation dynamics of land use practices in a rural landscape of inner Sicily. Based on the assumption that spatial patterns are the expression of transformation processes, where the spatial variation of human activities is a signific…
Study of energetic properties of different tree organs in six Olea europaea L. cultivars
2021
AbstractPruning is an important horticultural practice for the management of olive orchards (Olea europaea L.) that generates a considerable amount of residues every year. Olive orchards are increasingly expanding beyond the Mediterranean Basin to new growing Countries (Australia, California, Argentina, Chile and Uruguay) and this will certainly lead to larger availability of pruning material. Currently, the interest in use of olive tree pruning residues for energy purposes is increasing but unfortunately, the information on the differences among organs of the tree, in terms of calorific value and ash content, is scarce. Another unknown aspect is the effect of cultivar vigour on dry matter …
CHEMICAL COMPOSITION OF THE ESSENTIAL OILS OF SOME TAXA OF THE GENUS CLINOPODIUM (LAMIACEAE) FROM SICILY
2017
The genus Clinopodium L. (Lamiaceae) is known for its medical uses in folk medicine and as a spice in Italian food. Recently, several taxa previously assigned to Satureja L. and Calamintha Mill. have been transferred to this genus (1). Pharmacological studies reveal, for instance, that Calamintha nepeta (L.) Savi [Clinopodium nepeta Kuntze subsp. nepeta], commonly known as “nepetella”, exhibits cholagogue, expectorant, sedative and antibiotic properties (2); furthermore, the essential oil of its aerial parts showed an antifungal activity (3). The apical flowering parts and leaves of Clinopodium vulgare L. are used in popular medicine for their carminative and emmenagogue properties (1); rec…
Comunicare il paesaggio. La fotografia come strumento di lettura delle trasformazioni del territorio
2022
Following the alterations generated by the industrialization process, guided by the continuous domination of nature in the name of progress, photography has allowed us to observe the permanence and transformations on the territory. Gregotti in his essay "La Forma Del Territorio" (1966) gives particular attention to the tools inherent in modern art, such as photography, painting and cinema. According to the architect, in fact, these tools have the ability to immediately highlight the descriptive and representative dynamics of a territory, thus becoming extremely important also in the architectural field for their anticipatory role of reality. The comparison of representations of the same pla…
A Novel Framework of Hybrid Harvesting Mechanisms for Remote Sensing Devices
2022
Sensing networks have recently proven to be useful in a variety of disciplines. The use of mobile sensing robots and unmanned aerial vehicles (UAVs) is intended to lessen the burden of sensor node energy consumption. However, conserving energy in the networks remains a major concern. In this work, a design of a hybrid RF-Solar harvesting system to support sensing devices is investigated. The harvesting circuits may collect energy from both solar and radio frequency (RF) resources that are commonly available in ambient environments. This approach creates hybrid harvesting circuits for all elements in the combined sensor networks by combining RF and solar harvester circuits. The RF harvester …
Hybrid Solar-RF Energy Harvesting Mechanisms for Remote Sensing Devices
2022
Recently, sensor networks effectively provide many applications in different fields. The deployment of mobile sensors, unmanned aerial vehicles is to reduce the burden of energy consumption for sensor nodes. However, saving energy in such networks is still a critical issue. This paper investigates the performance of a hybrid RF-Solar harvesting circuit for remote sensing devices. The harvesting circuit can simultaneously harvest power from solar and radio frequency (RF) sources readily available in the surrounding environment. The proposed work builds RF and solar harvester circuits to create hybrid harvesting circuits for all elements in the combined sensing networks. The stand-alone RF ha…
Mura Pregne: una revisione dei dati archeologici e una ricostruzione virtuale del sito
2018
One of the most interesting long-term settlements in Sicily is Mura Pregne (Palermo). The site (400 m a.s.l.) is located on the northern coast of Sicily, between the last northwestern outcrops of the Madonie and the isolated relief of Monte San Calogero, in a close-up position on the Torto river valley. The earliest phases of the settlement are scarcely known and difcult to assess in their actual consistency, because a quarry has distorted the original appearance of the site. In the absence of new excavations, the purpose of this contribution is to offer a topographic description of the diferent areas, together with new archaeological considerations, based on feld survey and aerial photo an…
Between the Megalopolis and the Deep Blue Sky: Challenges of Transport with UAVs in Future Smart Cities
2019
International audience; With the rapid increase of the world's urban population, the infrastructure of the constantly expanding metropolitan areas is undergoing an immense pressure. To meet the growing demands of sustainable urban environments and improve the quality of life for citizens, municipalities will increasingly rely on novel transport solutions. In particular, Unmanned Aerial Vehicles (UAVs) are expected to have a crucial role in the future smart cities thanks to their interesting features such as autonomy, flexibility, mobility, adaptive altitude, and small dimensions. However, densely populated megalopolises of the future are administrated by several municipals, governmental and…
Sulfuric acid speleogenesis (SAS) close to the water table: Examples from southern France, Austria, and Sicily
2016
Caves formed by rising sulfuric waters have been described from all over the world in a wide variety of climate settings, from arid regions to mid-latitude and alpine areas. H2S is generally formed at depth by reduction of sulfates in the presence of hydrocarbons and is transported in solution through the deep aquifers. In tectonically disturbed areas major fractures eventually allow these H2S-bearing fluids to rise to the surface where oxidation processes can become active producing sulfuric acid. This extremely strong acid reacts with the carbonate bedrock creating caves, some of which are among the largest and most spectacular in the world. Production of sulfuric acid mostly occurs at or…
The chemical composition of the aerial parts of Stachys spreitzenhoferi (Lamiaceae) growing in Kythira Island (Greece), and their antioxidant, antimi…
2022
The Stachys L. genus has been used in traditional medicine to treat skin inflammations, stomach disorders, and stress. The aim of this study was to investigate the chemical profile and biological activity of the methanolic extract of Stachys spreitzenhoferi Heldr. (Lamiaceae) aerial parts, collected on the island of Kythira, South Greece. The analysis by liquid chromatography coupled with electrospray ionization and high-resolution mass spectrometry [LC-(-)ESI/HRMSn] of the methanol extract revealed the occurrence of thirty-six compounds - flavonoids, phenylethanoid glycosides, iridoids, quinic acid derivatives, aliphatic alcohol glycosides, and oligosaccharides - highlighting the substanti…