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2013
Nóbrega, C. S., M. Matzapetakis, and S. R. Pauleta. "(1)H, (13)C and (15)N resonance assignment of the soluble form of the Lipid-modified Azurin from Neisseria gonorrhoeae." Biomol NMR Assign. 7 (2013): 311-4. AbstractWebsite

Lipid-modified azurin (Laz) from Neisseria gonorrhoeae is a type 1 copper protein proposed to be the electron donor to several enzymes involved in the resistance mechanism to reactive oxygen and nitrogen species. Here we report the backbone and side-chain resonance assignment of Laz in the reduced form, which has been complete at 97 %. The predicted secondary structure indicates that this protein belongs to the azurin subfamily of type 1 copper proteins.

Parthiban, Shanmugam, Elamurugu Elangovan, Pradipta K. Nayak, Alexandra Goncalves, Daniela Nunes, Luis Pereira, Pedro Barquinha, Tito Busani, Elvira Fortunato, and Rodrigo Martins. "Performances of Microcrystalline Zinc Tin Oxide Thin-Film Transistors Processed by Spray Pyrolysis." Journal of Display Technology. 9 (2013): 825-831. AbstractWebsite
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Martins, Rodrigo F. P., Arman Ahnood, Nuno Correia, Luis M. N. P. Pereira, Raquel Barros, Pedro MCB Barquinha, Ricardo Costa, Isabel M. M. Ferreira, Arokia Nathan, and Elvira EMC Fortunato. "Recyclable, Flexible, Low-Power Oxide Electronics." Advanced Functional Materials. 23 (2013): 2153-2161. AbstractWebsite
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Neuparth, Nuno, Daniel Aelenei, Iolanda Caires, João Teixeira, João Viegas, Manuela Cano, Paula Leiria-Pinto, and Pedro Martins Environment and Health in Children Day Care Centers - Ambiente e Sa. Eds. Nuno Neuparth, Daniel Aelenei, Iolanda Caires, Joao Paulo Teixeira, Jo Viegas, Manuela Cano, Paula Leiria Pinto, and Pedro Martins. Universidade Nova de Lisboa, 1169-056 Lisboa: Faculdade de Ciências Médicas, 2013.Website
Nobrega, C. S., and S. R. Pauleta. "Physiological and Biochemical insights into the E. coli cytochrome c peroxidase." European Biophysics Journal with Biophysics Letters. Vol. 42. Eur Biophys J Biophy, 42. 2013. S179. Abstract
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Valerio, Pedro, Antonio M. Monge Soares, Rui JC Silva, Maria Fatima Araujo, Paulo Rebelo, Nuno Neto, Raquel Santos, and Tiago Fontes. "Bronze production in Southwestern Iberian Peninsula: the Late Bronze Age metallurgical workshop from Entre Aguas 5 (Portugal)." Journal of Archaeological Science. 40.1 (2013): 439-451. Abstract
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Cardoso, Alberto, Maria Teresa Restivo, Pedro Cioga, Miguel Delgado, J. Monsanto, João Bicker, Eduardo Nunes, and Paulo Gil. "flock.uc.pt – A Web Platform for Online Educational Modules with Online Experiments." International Journal of Online Engineering (iJOE). 9 (2013): 13-15. Abstract

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Nodehi, Tahereh, Sudeep Ghimire, Ricardo Jardim-Goncalves, and Antonio Grilo. "On MDA-SOA based Intercloud Interoperability framework." 1 (2013): 5-22. Abstract
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Araujo, Andreia, Raquel Barros, Tiago Mateus, Diana Gaspar, Nuno Neves, Antonio Vicente, Sergej A. Filonovich, Pedro Barquinha, Elvira Fortunato, Ana M. Ferraria, Ana M. Botelho do Rego, Ana Bicho, Hugo Aguas, and Rodrigo Martins. "Role of a disperse carbon interlayer on the performances of tandem a-Si solar cells." Science and Technology of Advanced Materials. 14 (2013). AbstractWebsite
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Faria, Gonçalo, Carlos Chastre, Válter Lúcio, and Ângela Nunes. "Compression behaviour of short columns made from cement-bonded particle board." Construction and Building Materials. 40 (2013): 60-69. AbstractWebsite

Cement bonded particle board (CBPB) is a composite material produced in plates consisting mainly of wood and cement, and may contain additives. This material is currently used in cladding, raised floors, dropped ceilings, prefabricated houses, office containers and various supplies to the building industry such as kitchens, bathrooms and furniture. It is composed of a type of wood Pinus pinaster and/or Pinus pinea, Portland cement type II, sodium silicate and aluminium sulphate. CBPB has been the subject of several studies with the purpose of enabling the use of other types of wood or even vegetable biomass, as the chemical compounds from wood (extractives and sugars) tend to inhibit of cement hydration. A study on the behaviour of short CBPB elements under compression was carried out in the Department of Civil Engineering of Universidade NOVA de Lisboa with the aim of enabling its use in structural elements. The study was supported by VIROC, the company which produces CBPB in Portugal. This paper presents and analyses the most significant results of a campaign of axial compression tests performed on 111 specimens of different heights and cross sections. The behaviour of CBPB specimens of varying slenderness was subjected to a more detailed analysis.

Mateus, O., C. Neto de Carvalho, and A. A. Klompmaker. "Decapod crustacean body and ichnofossils from the Mesozoic of Portugal." 5th Symposium on Mesozoic and Cenozoic Decapod Crustaceans. Warszawa: Polish Geological Institute − National Research Institute & AGH University of Science and Technology, 2013. mateus_et_al_2013_crustacea_mesozoic_portugal_5th_decapod_crustaceans_meeting_2013.pdf
Nandy, Suman, Goncalo Goncalves, Joana Vaz Pinto, Tito Busani, Vitor Figueiredo, Luis Pereira, Rodrigo Ferrao Paiva Martins, and Elvira Fortunato. "Current transport mechanism at metal-semiconductor nanoscale interfaces based on ultrahigh density arrays of p-type NiO nano-pillars." Nanoscale. 5.23 (2013): 11699-11709. AbstractWebsite

The present work focuses on a qualitative analysis of localised I-V characteristics based on the nanostructure morphology of highly dense arrays of p-type NiO nano-pillars (NiO-NPs). Vertically aligned NiO-NPs have been grown on different substrates by using a glancing angle deposition (GLAD) technique. The preferred orientation of as grown NiO-NPs was controlled by the deposition pressure. The NiO-NPs displayed a polar surface with a microscopic dipole moment along the (111) plane (Tasker's type III). Consequently, the crystal plane dependent surface electron accumulation layer and the lattice disorder at the grain boundary interface showed a non-uniform current distribution throughout the sample surface, demonstrated by a conducting AFM technique (c-AFM). The variation in I-V for different points in a single current distribution grain (CD-grain) has been attributed to the variation of Schottky barrier height (SBH) at the metal-semiconductor (M-S) interface. Furthermore, we observed that the strain produced during the NiO-NPs growth can modulate the SBH. Inbound strain acts as an external field to influence the local electric field at the M-S interface causing a variation in SBH with the NPs orientation. This paper shows that vertical arrays of NiO-NPs are potential candidates for nanoscale devices because they have a great impact on the local current transport mechanism due to its nanostructure morphology.

Santos, R., J. Loureiro, A. Nogueira, E. Elangovan, JV Pinto, JP Veiga, T. Busani, E. Fortunato, R. Martins, and I. Ferreira. "Thermoelectric properties of V2O5 thin films deposited by thermal evaporation." Applied Surface Science. 282 (2013): 590-594. AbstractWebsite
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Lita da Silva, J., F. Caeiro, I. Natário, and C. A. Braumann Advances in Regression, Survival Analysis, Extreme Values, Markov Processes and Other Statistical Applications. Berlin Heidelberg: Springer, 2013.productflyer_978-3-642-34903-4.pdf
Kullberg, J. C., R. B. Rocha, A. F. Soares, J. Rey, P. Terrinha, A. C. Azerêdo, P. Callapez, Duarte, L.V., M. C. Kullberg, L. Martins, J. R. Miranda, C. Alves, J. Mata, J. Madeira, O. Mateus, M. Moreira, and C. R. Nogueira. "A Bacia Lusitaniana: Estratigrafia, Paleogeografia e Tectónica." Geologia de Portugal no contexto da Ibéria. Volume II. Ed. Terrinha Kullberg A. P. J. C. and Dias, R. Araújo. Lisboa: Escolar Editora, 2013. 195-350.kullberg_et_al_2013_a_bacia_lusitaniana.pdf
Marques, Pedro Faustino, Carlos Chastre, and Ângela Nunes. "Carbonation service life modelling of RC structures for concrete with Portland and blended cements." Cement and Concrete Composites. 37 (2013): 171-184. Abstractmarques_chastre_et_al._2013.pdfWebsite

The presented work aims at studying the modelling of long term performance of concrete compositions with different proportions of clinker as regards the diffusion of CO2 in concrete – carbonation. The replacing constituents of clinker that will be part of the binder in each concrete composition are limestone filler and low calcium fly ash (FA). The used percentage of FA by weight of binder was of 50%. Concrete compositions were made following standard prescribed requirements to attain service lives of 50 and 100 years as regards concrete performance against reinforcing steel corrosion. Test results of compressive strength and carbonation depth are reported at different curing ages of 28, 90, 180 and 365 days. Carbonation results were used for the implementation of modelling equations in order to estimate the design service life regarding reinforcing steel corrosion. Two performance-based methods were used: safety factor method and probabilistic method, and their results compared with the traditional prescriptive approach. At the age of 28 days the composition with OPC is the only one that reaches the target periods of 50 or 100 years. For the probabilistic method, different curing age results were analysed. For the tested results at 90, 180 and 365 days of age the reliability of some of the compositions with blended cements is within the minimum required, although still far from the higher performance of concrete with OPC.

N.J.Ford, M. L. Morgado, and M. Rebelo Nonpolynomial approximation of solutions to delay fractional differential equations. Proceedings of the 13th International Conference on Computational and Mathematical Methods in Science and Engineering, CMMSE2013. Almería , Spain.: ISBN:978-84-616-2723-3, 2013.
Nowacki, B., N. Paulino, and J. Goes A Simple 1 GHz Non-Overlapping Two-Phase Clock Generators for SC Circuits. 20th Int. Conf. Mixed Design of Integrated Circuits and Systems (MIXDES'2013). Gdynia, Poland: IEEE, 2013.
Núñez, C., C. Silva López, O. N. Faza, J. Fernández-Lodeiro, M. Diniz, R. Bastida, J. L. Capelo, and C. Lodeiro. "Bis(o-methylserotonin)-containing iridium(III) and ruthenium(II) complexes as new cellular imaging dyes: Synthesis, applications, and photophysical and computational studies." Journal of Biological Inorganic Chemistry. 18 (2013): 679-692. AbstractWebsite
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Crusat, Martin, Junfeng Liu, Angelina S. Palma, Robert A. Childs, Yan Liu, Stephen A. Wharton, Yi Pu Lin, Peter J. Coombs, Stephen R. Martin, Mikhail Matrosovich, Zi Chen, David J. Stevens, Vo Minh Hien, Tran Tan Thanh, Le Nguyen Truc Nhu, Lam Anh Nguyet, Do Quang Ha, Rogier H. van Doorn, Tran Tinh Hien, Harald S. Conradt, Makoto Kiso, Steve J. Gamblin, Wengang Chai, John J. Skehel, Alan J. Hay, Jeremy Farrar, Menno D. de Jong, and Ten Feizi. "Changes in the hemagglutinin of H5N1 viruses during human infection - Influence on receptor binding." Virology. 447 (2013): 326-337. Abstract
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Araújo, João, Peter J. Cameron, James D. Mitchell, and Max Neunhöffer. "The classification of normalizing groups." J. Algebra. 373 (2013): 481-490. AbstractWebsite
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Nandy, S., Gonçalves Pinto Busani Figueiredo Pereira Paiva Martins Fortunato G. J. V. "Current transport mechanism at metal-semiconductor nanoscale interfaces based on ultrahigh density arrays of p-type NiO nano-pillars." Nanoscale. 5 (2013): 11699-11709. AbstractWebsite

The present work focuses on a qualitative analysis of localised I-V characteristics based on the nanostructure morphology of highly dense arrays of p-type NiO nano-pillars (NiO-NPs). Vertically aligned NiO-NPs have been grown on different substrates by using a glancing angle deposition (GLAD) technique. The preferred orientation of as grown NiO-NPs was controlled by the deposition pressure. The NiO-NPs displayed a polar surface with a microscopic dipole moment along the (111) plane (Tasker's type III). Consequently, the crystal plane dependent surface electron accumulation layer and the lattice disorder at the grain boundary interface showed a non-uniform current distribution throughout the sample surface, demonstrated by a conducting AFM technique (c-AFM). The variation in I-V for different points in a single current distribution grain (CD-grain) has been attributed to the variation of Schottky barrier height (SBH) at the metal-semiconductor (M-S) interface. Furthermore, we observed that the strain produced during the NiO-NPs growth can modulate the SBH. Inbound strain acts as an external field to influence the local electric field at the M-S interface causing a variation in SBH with the NPs orientation. This paper shows that vertical arrays of NiO-NPs are potential candidates for nanoscale devices because they have a great impact on the local current transport mechanism due to its nanostructure morphology. © 2013 The Royal Society of Chemistry.

Aelenei, L., D. Aelenei, H. Gon, R. Lollini, E. Musall, A. Scognamiglio, E. Cubi, and M. Noguchi. "Design issues for net zero-energy buildings." Open House International. 38 (2013): 7-14. AbstractWebsite

Net Zero-Energy Buildings (NZEBs) have received increased attention in recent years as a result of constant concerns about energy supply constraints, decreasing energy resources, increasing energy costs and the rising impact of greenhouse gases on world climate. Promoting whole building strategies that employ passive measures together with energy efficient systems and technologies using renewable energy became a European political strategy following the publication of the Energy Performance of Buildings Directive recast in May 2010 by the European Parliament and Council. However designing successful NZEBs represents a challenge because the definitions are somewhat generic while assessment methods and monitoring approaches remain under development and the literature is relatively scarce about the best sets of solutions for different typologies and climates likely to deliver an actual and reliable performance in terms of energy balance (consumed vs generated) on a cost-effective basis. Additionally the lessons learned from existing NZEB examples are relatively scarce. The authors of this paper, who are participants in the IEA SHC Task 40-ECBCS Annex 52, "Towards Net Zero Energy Solar Buildings", are willing to share insights from on-going research work on some best practice leading NZEB residential buildings. Although there is no standard approach for designing a Net Zero-Energy Building (there are many different possible combinations of passive and efficient active measures, utility equipment and on-site energy generation technologies able to achieve the net-zero energy performance), a close examination of the chosen strategies and the relative performance indicators of the selected case studies reveal that it is possible to achieve zero-energy performance using well known strategies adjusted so as to balance climate drivendemand for space heating/cooling, lighting, ventilation and other energy uses with climate-driven supply from renewable energy resources.

Merino, E. G., P. D. Neves, I. M. Fonseca, F. Danéde, A. Idrissi, C. J. Dias, M. Dionísio, and N. T. Correia. "Detection of two glass transitions on triton X-100 under confinement." Journal of Physical Chemistry C. 117 (2013): 21516-21528. AbstractWebsite
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Nico, C. a, M. P. F. a Graça, M. b Elisa, B. A. b Sava, R. C. C. c Monteiro, L. a Rino, and T. a Monteiro. "Effects of ultraviolet excitation on the spectroscopic properties of Sm3+ and Tb3+ doped aluminophosphate glasses." Optical Materials. 35 (2013): 2382-2388. AbstractWebsite

Li2O-BaO-Al2O3-La2O 3-P2O5 glasses optically activated with rare earth ions with the 4f5, and 4f8 electronic configuration (Sm3+ and Tb3+, respectively) were analyzed by Raman spectroscopy, absorption, excitation photoluminescence, decay curves and temperature dependent photoluminescence. The spectroscopic characteristics of the as-prepared and heat treated samples at temperatures below and above T g were studied as well as their room temperature photometric properties under ultraviolet excitation. All the doped glasses exhibit typical signatures of the lanthanides in their trivalent charge state. For the samarium doped glass heat treated at 250 C (<Tg) the Sm2+ luminescence was also observed. The analysis of the luminescence efficiency was performed in the interval range of 14 K to room temperature, where the integrated intensity of the luminescence was found to decrease for the Sm 3+ and Tb3+ ions in the studied temperature range. Luminescence decay curves were found to be non-exponential for the 4G5/2 → 6H7/2 and 5D3 → 7F4 transitions of the Sm3+ and Tb3+ ions, respectively. The results strongly suggest the occurrence of energy transfer processes through cross relaxation phenomena, mediated by dipole-dipole interaction in all the studied samples. The decay of the 5D4 → 7F5 emission of the Tb3+ ions was found to be single exponential with a time constant of ∼3.1 ms. Based on the spectroscopic characteristics, models for recombination processes are proposed. The room temperature luminance photometric properties with ultraviolet excitation show that the samarium doped glasses have much lower luminance intensity (around 0.3 Cd/m2) when compared with the 6-7 Cd/m2 observed for the terbium doped ones. © 2013 Elsevier B.V. All rights reserved.