Encontrados 51 documentos, a visualizar página 1 de 6
The first full study of heavy metal(loid)s in western-European hedgehogs (Erina...
Baptista, Catarina Jota; Fernanda Seixas, Fernanda; Gonzalo-Orden, José M.; Patinha, Carla; Pato, Pedro; Silva, Eduardo Ferreira da; Casero, MaríaThe western-European hedgehog (Erinaceus europaeus) is an insectivore with a wide distribution in Portugal and a potential tool for biomonitoring relevant One Health hazards, including heavy metal(loid)s’ pollution. The aim of this study was to positively contribute to the current knowledge about the metal(loid) pollution in Portugal. Forty-six hedgehogs (from rescue centres; with known provenance) were necrops...
Use of isotopic and elemental fingerprints for seahorse species discrimination ...
Cabral, Ana Elisa; Calado, Ricardo; Palma, Jorge; Ricardo, Fernando; Silva, Eduardo Ferreira da; Patinha, Carla; Planas, MiquelSeahorses (Hippocampus spp.; Family Syngnathidae) are mainly targeted by Traditional Chinese Medicine, curio and ornamental trade, as dried or live specimens. Traceability tools may help fill the gaps on supply chains, securing information on geographic origin and identification of traded specimens. Fin-clipping, a non-lethal and well-established method in seahorse research, offers a potential approach to trace...
Heavy metal and metalloid concentrations in red deer (Cervus elaphus) and their...
Baptista, Catarina Jota; Seixas, Fernanda; Gonzalo-Orden, José M.; Patinha, Carla; Pato, Pedro; Silva, Eduardo Ferreira da; Fernandes, GilbertoThe red deer is an ungulate and large game species. The contamination of the ecosystems by metal(loid)s may lead to the exposure of animals (as well as humans) through water and food resources. The direct contact of hunters and wild animal meat consumers with deer carcasses may be a potential contaminant source. This study aimed to determine the metal(loid)s’ concentrations in the liver and kidney of red deer f...
The first full study of heavy metal(loid)s in western-European hedgehogs (Erina...
Baptista, Catarina Jota; Seixas, Fernanda; Gonzalo-Orden, José M.; Patinha, Carla; Pato, Pedro; Silva, Eduardo Ferreira da; Casero, María; Brazio, EricaThe western-European hedgehog (Erinaceus europaeus) is an insectivore with a wide distribution in Portugal and a potential tool for biomonitoring relevant One Health hazards, including heavy metal(loid)s’ pollution. The aim of this study was to positively contribute to the current knowledge about the metal(loid) pollution in Portugal. Forty-six hedgehogs (from rescue centres; with known provenance) were necrops...
Mapping of trace elements on the island of sal (cape verde) and blood concentra...
Diniz, Luísa; Almeida, Agostinho; Pinto, Marina Cabral; Miranda, Carmelita; Azevedo, Rui; Gerardo, Bianca; Carlos, Gelson; Dinis, PedroGeochemical mapping provides a set of information that allows easy interpretation and helps in decision-making on public policies that address a balance between health, environment and economy of a country. The Sal island (Cape Verde) has an area of 216 km2. In this study, 60 topsoil samples were collected, corresponding to a density of 1/7 km2. Chemical analysis, including analytical quality control, was carri...
Geochemistry and mineralogy of mill tailings Impoundments from the Panasqueira ...
Ávila, Paula F.; Silva, Eduardo Ferreira da; Salgueiro, Ana R.; Farinha, J. A.Selected geochemical results are presented from a study of the Panasqueira mine (Sn–W mineralization), which is one of the Portuguese test sites for the e-EcoRisk project (http://www.e-ecorisk.info/). These data permit a better understanding of the dynamics inherent to leaching, transport, and accumulation of some elements (mainly As, but also Cu, Pb, Zn, and Cd) in different sampling media and their environmen...
Heavy metal pollution in mine–soil–plant system in S. Francisco de Assis – Pana...
Candeias, Carla; Melo, Rita; Ávila, Paula Freire; Silva, Eduardo Ferreira da; Salgueiro, Ana Rita; Teixeira, João PauloThe active Panasqueira mine is a tin–tungsten (Sn–W) mineralization hosted by metasediments with quartz veins rich in ferberite. The economic exploitation has been focused on wolframite, cassiterite and chalcopyrite. The mineralization also comprises several sulphides, carbonates and silver sulphosalts. The mining and beneficiation processes produces arsenic-rich mine wastes laid up in huge tailings and open ai...
Acid mine drainage from the Panasqueira mine and its influence on Zêzere river ...
Candeias, Carla; Ávila, Paula Freire; Silva, Eduardo Ferreira da; Ferreira, Adelaide; Salgueiro, Ana Rita; Teixeira, João PauloThe Panasqueira hydrothermal mineralization, located in central Portugal, is the biggest Sn–W deposit of the Western Europe. The main evidences of the mining exploitation and ore treatment operations are testified with huge tailings, mainly, in the Rio and Barroca Grande areas. The mining and beneficiation processes, at the site, produces metal rich mine wastes. Oxidation of sulfides tailings and flow from open...
Quantitative–spatial assessment of soil contamination in S. Francisco de Assis ...
Silva, Eduardo Ferreira da; Ávila, Paula Freire; Salgueiro, Ana Rita; Candeias, Carla; Pereira, Henrique GarciaThrough the years, mining and beneficiation processes produces large amounts of As-rich mine wastes laid up in huge tailings and open-air impoundments (Barroca Grande and Rio tailings) that are the main source of pollution in the surrounding area once they are exposed to the weathering conditions leading to the formation of AMD and consequently to the contamination of the surrounding environments, in particular...
Gestão temerária de instituição financeira: Uma contribuição para a interpretaç...
Silva, Eduardo Ferreira daA presente pesquisa se dedica ao estudo do crime de gestão temerária de instituição financeira, art. 4º, parágrafo único, da Lei nº 7.492/86 e tem como objetivo especialmente a discussão e enunciação de critérios interpretativos restritivos que permitam identificar contornos mais seguros sobre o que se deve compreender como temerário. Após a análise em torno do debate sobre a constitucionalidade do tipo penal e...