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Evaluation of the Implementation of a Low Emission Zone in Lisbon  [PDF]
Francisco Ferreira, Pedro Gomes, Ana Cristina Carvalho, Hugo Tente, Joana Monjardino, Paulo Pereira, Helena Brás
Journal of Environmental Protection (JEP) , 2012, DOI: 10.4236/jep.2012.329137
Abstract: The city of Lisbon, like many others in the EU region, introduced a Low Emission Zone (LEZ) as a tool for improving air quality in its city centre. This kind of emission reduction schemes is always controversial since it might lead to significant changes in the daily behaviours of its inhabitants. In order to evaluate the effects of the measure, an estimation of the impact of the introduction of the Lisbon LEZ was performed. Real traffic counting and fleet characterization combined with CORINAR-based emission inventory methodology allowed to estimate the impacts of three different scenarios applied to the “business as usual” condition (current vehicle fleet) ranging from “no circulation from non- compliant vehicles” to an “aggressive fleet renewal”. Results highlight the high percentage of atmospheric emissions of PM10 and NOx that might result from certain fleets like taxis and buses, especially because there was an emphasis in standardized/normalized estimations (emissions per 1000 vehicles) in order to allow different strategic approaches. The total reduction of PM10 emissions associated to each scenario vary between 6 ton.year-1 (scenario 2) and 8 ton.year-1 (scenario 1), or 25% and 34% less emissions. In terms of NOxemission reductions vary between 6 ton.year-1 (scenario 2) and 57 ton.year-1 (scenario 1), or 1% and 7% less emissions. The Lisbon LEZ is therefore much more efficient in reducing PM10 emissions compared to NOx. Major reduction in PM10 and NOx emissions are to be expected with a moderate intervention in the (relatively old) taxi fleet in Lisbon while for passenger cars the impact is limited. However in absolute terms and due to its urban mileage passenger cars should also continue being included in Lisbon LEZ. Simultaneously, an effort in the increase of dedicated lanes for public transport should be made, for further reductions in PM10 and NOx emissions.
The establishment of radiocarbon chronologies for early Medieval sites: a case study from the Upper Mondego Valley (Guarda, Portugal).
Tente, Catarina,Carvalho, António Faustino
Munibe Antropologia-Arkeologia , 2011,
Abstract: Presentamos los resultados de un proyecto sobre dataciones absolutas de contextos alto-medievales de la región del Alto Valle del Mondego, exponiendo los criterios utilizados en la selección de las muestras fechadas. Asimismo, fue posible obtener una cronología precisa en relación a una realidad arqueológica hasta ahora desconocida, que carecía de fósiles directores. Considerando el balance final de este proyecto, concluimos que la metodología adoptada podrá ser aplicada en otras regiones peninsulares, con yacimientos de este mismo periodo que padecen de las mismas limitaciones.
Fator de vis?o do céu e intensidade de ilhas de calor na escala do pedestre
Souza, Lea Cristina Lucas de;Tente, Cezar Mecozzi;Giunta, Mariene Benutti;Nakata, Camila Mayumi;
Ambiente Construído , 2010, DOI: 10.1590/S1678-86212010000400011
Abstract: the lack of available tools to support planning decisions based on the interactions between climate and the city is a challenge for architects and urban planners. although there are models designed for this specific purpose, the restrictions faced in their application further complicate the situation. this study aims contribute with additional information on the subject by focusing on the role played by the sky view factor in the urban heat island intensity. first, the residential neighbourhood taken as study area was characterized and its urban geometry determined. the geometric unit in this case was the sky view factor. subsequently, reference points in urban canyons were selected and their air temperatures measured. the urban heat island intensity was identified by comparing temperatures measured by a rural meteorological station and those registered at the urban spots at the same time. through the identification of the area's thermal trends, the data on the nocturnal urban islands' maximum intensity were compared with those obtained through an empirical model. a correction equation was suggested and real data from previous studies in the same area were compared with these adjusted results. the results indicate that the nocturnal urban temperature in this area varied according to the range of the sky view factors considered.
Tuberculose testicular: Caso clínico
Viveiros,Filipa; Tente,David; Espiridi?o,Paulo; Carvalho,Aurora; Duarte,Raquel;
Revista Portuguesa de Pneumologia , 2009,
Abstract: testicular tuberculosis is rare, occurring in approximately 3% of patients with genital tuberculosis. it is often clinically indistinguishable from lesions such as testicular tumour and infarction and may even mimic testicular torsion. men aged 20-50 years old are most commonly affected and often present with painful or painless enlargement of the scrotum. ultrasound (us) is currently the best technique for imaging the scrotum and its contents and for diagnosing testicular lesions. we present the case of a 58 year-old male, followed in pneumology for pulmonary tuberculosis, who complained of pain and right scrotum enlargement in the second month of anti-tuberculosis chemotherapy. first assessment, seconded by us, suggested a neoplasic lesion, and the final diagnosis revealed testicular tuberculosis.
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