7 documents found, page 1 of 1
The INOVMineral project’s contribution to mineral exploration - a WebGIS integr...
Cardoso-Fernandes, Joana; Santos, Douglas; Almeida, Cátia Rodrigues de; Vasques, Julia Tucker; Mendes, Ariane; Ribeiro, Ricardo; Azzalini, AntonioDue to the current energetic transition, new geological exploration technologies are needed to discover mineral deposits containing critical materials such as lithium (Li). The vast majority of European Li deposits are related to Li–Cs–Ta (LCT) pegmatites. A review of the literature indicates that conventional exploration campaigns are dominated by geochemical surveys and related exploration tools. However, oth...
A GIS open source application for cost distance modelling for site catchment an...
Duarte, Lia; Godinho, S.; Gomes, António Alberto; Monteiro-Rodrigues, Sérgio; Teodoro, AnaArchaeological research employing least-cost analysis and Geographic Information Systems (GIS) has increased over the past decade. In the Portuguese archaeological research, several approaches were applied to estimating the cost-distance, describing the relationship between travel distances and their associated costs. Archaeologically, site catchment analysis (SCA) consists of a territorial analysis of the area...
Spatio-temporal water hyacinth monitoring in the lower Mondego (Portugal) using...
Pádua, Luís; Duarte, Lia; Geraldes, Ana Maria; Sousa, Joaquim J.; Castro, João PauloMonitoring invasive plant species is a crucial task to assess their presence in affected ecosystems. However, it is a laborious and complex task as it requires vast surface areas, with difficult access, to be surveyed. Remotely sensed data can be a great contribution to such operations, especially for clearly visible and predominant species. In the scope of this study, water hyacinth (Eichhornia crassipes) was ...
GIS application to detect invasive species in aquatic ecosystems
Duarte, Lia; Castro, João Paulo; Sousa, Joaquim J.; Pádua, LuísThe detection of invasive plant species in aquatic ecosystems is important to help in the control or to mitigate its spread and impacts. Remote sensing (RS) can be explored in this context, helping to monitor this type of plants. This study intends to present a free to use and opensource software application that, through a graphical user interface, can process remote sensed data to monitor the spread of invasi...
An Integrated Multi-Approach to Environmental Monitoring of a Self-Burning Coal...
Teodoro, Ana; Santos, Patrícia; Espinha Marques, Jorge; Ribeiro, Joana; Mansilha, Catarina; Melo, Armindo; Duarte, Lia; Rodrigues de Almeida, CátiaThe São Pedro da Cova waste pile (Porto, Portugal) is composed of coal mining residues that have been self-burning since 2005 and is located close to an inhabited area and social infrastructures, further adding to effects on the environment and human health. Therefore, there is a great interest in the environmental monitoring of this waste pile. This work describes an integrative multi-approach that allows the ...
QGIS approach to extract fluvial terraces for archaeological purposes using rem...
Duarte, Lia; Gomes, António Alberto; Teodoro, Ana; Monteiro-Rodrigues, SérgioFluvial terraces, normally defining flattened surfaces are significant geomorphic features that explains the presence of rivers at high altitudes and constitute the remains of the old river along the valley. In Iberia, many of these terraces preserve Paleolithic artifacts and document the presence of the first human communities. Nowadays, the increasing use of Free and Open Source Software (FOSS) provides the o...
NDVI and LST extraction of MODIS data under a GIS open source application - Ric...
Teodoro, Ana Cláudia; Duarte, Lia; Barradas, Patrícia; Mateus, Teresa Letra; Neto, ZoraimaFevers of unknown origin can have different aetiologies. The overlapping symptomatology of rickettsial infection and other endemic diseases that cause fever leads to a misdiagnosis or under-diagnosis of spotted fever group of Rickettsia (SFGR). To better understand the epidemiology of this vector-borne disease in Angola, a comprehensive seroprevalence study was conducted investigating the exposure to SFGR in a ...