12 documents found, page 1 of 2
Combined experimental and theoretical studies on electron transfer in potassium...
Regeta, K.; Kumar, S.; Cunha, T.; Mendes, Mónica; Lozano Martínez, Ana Isabel; Pereira, Pedro; Garcia, G.; Moutinho, A. M. C.Negative ion formation in electron transfer experiments from fast neutral potassium (K) atom collisions with neutral tetrachloromethane (CCl4) molecules has been investigated in the laboratory frame range of 8-1000 eV. Comprehensive calculations on the electronic structure were performed for CCl4 in the presence of a potassium atom and used to help analyze the lowest unoccupied molecular orbitals participating ...
BIM (Building Information Modelling) as a prevention tool in the design and con...
Tender, M.; Couto, J. Pedro; Lopes, C.; Cunha, T.; Reis, R.BIM tools have been gaining relevance in the development and management of projects. That is not yet the case when it comes to the Health and Safety Plan (HSP) and the Technical File (TF). The current way of managing prevention often results in a long list of procedures that are hard to understand by those who should be implementing them. This whole scenario creates an environment prone to the downgrading of th...
Energy savings in 3G using dynamic spectrum access and base station sleep modes
Cunha, T.; Rodrigues, A.; Vieira, Pedro; Martins, A.; Silva, N.; Varela, L.The energy consumption and energy efficiency of mobile telecommunication networks are crucial factors for the sustainability of this industry. This paper targets the reduction of the energy consumption at a Base Station (BS) level through the adoption of sleep modes during the off-peak periods of the day and relying in the existence of co-located and overlaid frequency bands to provide the coverage and capacity...
Mandibular ramus-related Stafne's bone cavity
Panella, Jurandyr; Campos, Paulo Sérgio Flores; Rebello, Iêda Margarida Rocha Crusoé; Azevedo, Roberto Almeida de; Pena, N.; Cunha, T.p. 63–66; Submitted by Edileide Reis (leyde-landy@hotmail.com) on 2013-12-09T13:16:21Z No. of bitstreams: 1 J Panella.pdf: 150678 bytes, checksum: d2bc60bb6b720047860d03845b48d62f (MD5); Approved for entry into archive by Flávia Ferreira (flaviaccf@yahoo.com.br) on 2014-02-19T18:17:54Z (GMT) No. of bitstreams: 1 J Panella.pdf: 150678 bytes, checksum: d2bc60bb6b720047860d03845b48d62f (MD5); Made available in DSp...
Earthquake Mitigation in the Lisbon and Lower Tagus Valley area, Portugal
Carvalho, J.; Dias, R.; Pinto, C.; Cunha, T.; Leote, J.; Vilanova, S.; Narciso, J.; Borges, J. F.; Ghose, R.J.G.The capital city of Lisbon and the Lower Tagus Valley region of central Portugal mainland are located in the Eurasian plate about 350 Km from the approximately E-W oriented Eurasia-Africa plate boundary. It is characterized by low slip-rates (<0.4 mm/year) and a moderate seismicity, occasionally shaken by some important historical earthquakes causing significant damages and economical losses. The most well know...
The potential for CO2 geological storage in the Porto basin
Cardoso, F.; Cunha, T.; Terrinha, P.; Carneiro, J.; Ribeiro, C.The storage of CO2 is an up to date topic involving numerous governmental, academic and commercial institutions. COMET is a joint research project co-financed by the European Seventh Framework Programme that aims at identifying and assessing the most cost effective CO2 transport and storage infrastructure able to serve the West Mediterranean area, namely Portugal, Spain and Morocco. In this project a preliminar...
Tsunamigenic earthquakes in the Gulf of Cadiz: fault model and recurrence
Matias, L. M.; Cunha, T.; Annunziato, A.; Baptista, Maria Ana Carvalho Viana; Carrilho, F.The Gulf of Cadiz, as part of the Azores-Gibraltar plate boundary, is recognized as a potential source of big earthquakes and tsunamis that may affect the bordering countries, as occurred on 1 November 1755. Preparing for the future, Portugal is establishing a national tsunami warning system in which the threat caused by any large-magnitude earthquake in the area is estimated from a comprehensive database of sc...
The validation analysis of the INSHORE system: a precise and efficient coastal ...
Baptista, P.; Bernardes, C.; Cunha, T.Government and environmental entities are becoming increasingly concerned with qualifying and quantifying the erosion effects that are observed in sandy shores. Correspondingly, survey methodologies that gather data for such erosion studies are increasingly being demanded. The responsible entities are continually broadening their areas of interest, are concerned in the establishment of regular monitoring progra...
A precise and efficient methodology to analyse the shoreline displacement rate
Baptista, P.; Cunha, T.; Bernardes, C.; Gama, C.; Ferreira, Ó.; Dias, A.The shoreline change rate is one of the most significant parameters in analysing sandy shore behaviour with time. This parameter can be monitored by means flow- and high-resolution survey methods, depending on the objectives of the monitoring programme. Survey efficiency is also very important for achieving high resolution in both space and time. Another important aspect is the precision and significance of the...
Active faults and geomorphology in the seafloor between the Gibraltar straits a...
Terrinha, Pedro; Duarte, João; Valadares, Vasco; Rosas, Filipe M.; Matias, L.; Batista, L.; Gonçalves, João Noiva; Cunha, T.; Silva, S.; Gràcia, EulàliaApresenta-se um mapa tectónico das falhas activas e um mapa geomorfologico entre a Crista Tore-Madeira e o estreito de Gibraltar. Classificam-se as falhas do ponto de vista geométrico, cinemático e cronológico. Apresentam-se resultados de modelação numérica e análoga para a interferência de falhas de desligamento dextrógiro (próximas de WNW-ESE/90º) e cavalgamento (NE-SW/SE) e ainda para a interferência destas ...