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2007
Martins, R., P. Barquinha, I. Ferreira, L. Pereira, G. Gonçalves, and E. Fortunato. "{Role of order and disorder on the electronic performances of oxide semiconductor thin film transistors}." Journal of Applied Physics. 101 (2007): 044505. AbstractWebsite
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Cravo, C., A. R. C. Duarte, and C. M. M. Duarte. "{Solubility of carbon dioxide in a natural biodegradable polymer: Determination of diffusion coefficients}." Journal of Supercritical Fluids. 40 (2007). Abstract

Carbon dioxide solubility in a natural biodegradable polymer, namely poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) and the diffusion coefficients are reported. Equilibrium solubility of dense carbon dioxide in PHBV was studied by a gravimetric method in a temperature range from 308 to 313 K and a pressure range from 10.0 to 15.0 MPa. The copolymer presented Fickian behavior and Fick's diffusion model was applied to determine the amount of carbon dioxide present in the samples after a predermined exposure time as well as the diffusion coefficients. Diffusion coefficients for the sorption under supercritical (sc) conditions and desorption at ambient conditions were determined and compared. To evaluate the influence of the HV content in the amount of maximum sorption degree of the polymer, different samples of PHBV copolymers were tested and the sorption curves are here presented. © 2006 Elsevier B.V. All rights reserved.

Costa, Mariana Sousa, Ana Rita C. Duarte, Margarida M. Cardoso, and Catarina M. M. Duarte. "{Supercritical antisolvent precipitation of PHBV microparticles}." International Journal of Pharmaceutics. 328 (2007): 72-77. Abstract

The micronization of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) from organic solutions using supercritical antisolvent (SAS) technique has been successfully achieved. SAS experiments were carried out at different operational conditions and microspheres with mean diameters ranging from 3 to 9 $μ$m were obtained. The effect of CO2 and liquid flow, temperature and pressure on particle size and particle size distribution was evaluated. The microspheres were precipitated from a dichloromethane (DCM) solution. The best process conditions for this mixture were, according to our study, 40 °C, 100 bar, 1 mL min-1 liquid flow and 10 L min-1 carbon dioxide flow. Experiments with polymers containing different HV percentages were carried out. The powders obtained became more spherical as the HV content decreased. © 2006 Elsevier B.V. All rights reserved.

Duarte, Ana Rita C., Ana Luisa Simplicio, Arlette Vega-González, Pascale Subra-Paternault, Patrícia Coimbra, MH Gil, Herminio C. de Sousa, and Catarina M. M. Duarte. "{Supercritical fluid impregnation of a biocompatible polymer for ophthalmic drug delivery}." Journal of Supercritical Fluids. 42 (2007): 373-377. Abstract

Supercritical fluid impregnation was tested to prepare a new ophthalmic drug delivery device. Poly(methylmethacrylate-co-ethylhexylacrylate-co-ethyleneglycoldimethacr ylate), P(MMA-EHA-EGDMA) has been proposed by Mariz [M. Mariz, Preparação de uma lente intra-ocular dotada de um sistema de libertação controlada de fármaco, Master Thesis, Universidade de Coimbra, 1999] as a promising matrix to be used for intraocular delivery of anti-inflammatory drugs used in eye surgery. This matrix was successfully impregnated with flurbiprofen, a non-steroidal anti-inflammatory agent. The success of the impregnation was evaluated by scanning electron microscopy (SEM) analysis and also by in vitro drug release studies. The effect of some operating parameters was evaluated, namely, pressure and contact time. The operating pressure will influence both the solubility of the drug in the supercritical fluid but also the sorption degree of the polymeric matrix in the presence of carbon dioxide. The solubility of the drug in carbon dioxide and the sorption degree are reported in previous studies. A comparison between the batch and the semi-continuous impregnation process is also presented. The supercritical fluid impregnation proved to be feasible for the preparation of a new ophthalmic drug delivery system. The drug release profiles suggest that the drug can be released up to three months, which is a major advantage for the prevention of the inflammatory response after ophthalmic surgery. © 2007 Elsevier B.V. All rights reserved.

2006
Chemetov, N. V., and F. Cipriano. "The 2D Euler equations and the statistical transport equations." COMMUNICATIONS IN MATHEMATICAL PHYSICS. 267 (2006): 543-558. Abstract

{We prove the existence of weak solutions for the forward and backward statistical transport equations associated with the 2D Euler equations. Such solutions can be interpreted, respectively, as a statistical Lagrangian and a statistical Eulerian description of the motion of the fluid.}

Karlovich, AY. "Higher order asymptotics of Toeplitz determinants with symbols in weighted Wiener algebras." Journal of Mathematical Analysis and Applications. 320.2 (2006): 944-963. AbstractWebsite

We extend a result of Bottcher and Silbermann on higher order asymptotics of determinants of block Toeplitz matrices with symbols in Wiener algebras with power weights to the case of Wiener algebras with general weights satisfying natural submultiplicativity, monotonicity, and regularity conditions.

Nunes, Isabel L., Ana Filipa Costa, Ana Fortes Baptista, and Fátima M. Valério Implementation of Safety, Health and Environment Pillar of TPM on an Ice Cream Production Line. 3rd International Conference on WORKING ON SAFETY. The Eemhof, The Netherlands, 2006. Abstract
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Moniz, António Competitividade no sector automóvel e formas inovadoras de gestão do emprego em Portugal[Competitivity in the Portuguese automotive sector and innovative forms of employment management]. University Library of Munich, Germany, 2006. Abstract

If indicators of international competitivity of the Portuguese industry reveal very strong weaknesses in the field of education and vocational training, the achievement of a solution is not based only (and should not!) in a decisive increase of investment and support in the education and training system. It seem not logical to think in that way, once normally when one tries to solve a problem that is done in the context of that same problem. Eventually there are other strategies. Which are, then, the fields where is necessary to orient the investiment to improve an industrial competitivity? To try to answer this question, we analise one of the sectors that have contributed the most for an improvement of the Portuguese economical performance, and for a true innovative process as in terms of industrial product, or in terms of manufacturing and distribution processes. Is the automotive sector where that happens, taken in its two most important sub-sectors: the one of automobile manufacturing and assembly, and the one of components manufacturing.

Sequeira, S., C. Casanova, and E. J. Cabrita. "Deacidification of paper using dispersions of Ca(OH)(2) nanoparticles in isopropanol. Study of efficiency." Journal of Cultural Heritage. 7 (2006): 264-272. Abstract
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Pereira, L., H. Águas, E. Fortunato, and R. Martins. "{Nanostructure characterization of high k materials by spectroscopic ellipsometry}." Applied Surface Science. 253 (2006): 339-343. AbstractWebsite
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Moniz, António, and Rogério Puga Leal. "Editorial Note." Enterprise and Work Innovation Studies. 2 (2006): 7-8. AbstractWebsite

No abstract is available for this item.

Moniz, António B. "Foresight methodologies to understand changes in the labour process. Experience from Portugal." Enterprise and Work Innovation Studies. 2 (2006): 105-116. AbstractWebsite

The foresight and scenario building methods can be an interesting reference for social sciences, especially in terms of innovative methods for labour process analysis. A scenario – as a central concept for the prospective analysis – can be considered as a rich and detailed portrait of a plausible future world. It can be a useful tool for policy-makers to grasp problems clearly and comprehensively, and to better pinpoint challenges as well as opportunities in an overall framework. The features of the foresight methods are being used in some labour policy making experiences. Case studies developed in Portugal will be presented, and some conclusions will be drawn in order to organise a set of principles for foresight analysis applied to the European project WORKS on the work organisation re-structuring in the knowledge society, and on the work design methods for new management structures of virtual organisations.

Moniz, António B., and Tobias Woll. "International Conference on “Foresight Studies on Work in the Knowledge Society“ in Monte de Caparica (FCT-UNL) on 19-20 October 2006." Enterprise and Work Innovation Studies. 2 (2006): 153-154. AbstractWebsite

On 19 and 20 October 2006, the Research Centre on Enterprise and Work Organisation (IET) organised the first international conference on “Foresight Studies on Work in the Knowledge Society”. It took place at the auditorium of the new Library of FCT-UNL and had the support of the research project “CodeWork@VO” (financed by FCT-MCTES and co-ordinated by INESC, Porto). The conference related to the European research project “Work Organisation and Restructuring in the Knowledge Society” (WORKS), which is financed by the European Commission. The main objective of the conference was to analyse and discuss research findings on the trends of work structures in the knowledge society, and to debate on new work organisation models and new forms of work supported by ICT.

Moniz, António, Ana Silva, Tobias Woll, and José Samapaio Procesos de globalización de las cadenas de valor en la industria de vestuario en Portugal: implicación en las estructuras de trabajo. University Library of Munich, Germany, 2006. Abstract

Algunos de los fenómenos donde el concepto de “globalización” es aplicado incluyen la internacionalización de los mercados, la globalización de la cultura, el dominio político hegemónico del mundo por algunos estados poderosos, o grupos de estados, el poder creciente de organismos supranacionales, y el desarrollo de una división global de trabajo. De acuerdo con Radice, la globalización é generalmente definida como “un proceso a través de lo cual una proporción creciente de transacciones económicas, sociales e culturales ocurre directamente o indirectamente entre partners de países distintos” (Radice, 2004: 154). Un ponto de partida para entender la división global del trabajo debe ser la investigación de los modos como las empresas se reestructuran, una vez que son los actores-llave en la decisión sobre que trabajo debe ser encontrado y donde. Las “cadenas de valor” descriven cada etapa en el proceso productivo de un producto o un servicio final. La palabra “valor” en la frase “cadena de valor” dice respecto al valor añadido. Cada etapa en la cadena de valor implica recibir inputs, procesarlos, y entonces pasarlos a la unidad siguiente en la cadena, con el valor que está sendo adicionado no proceso. As unidades separadas da cadena de valor pueden estar dentro da misma empresa (in-house) o en distintas empresas (outsourced). Similarmente pueden estar en un mismo local, o en otra localización. La normalización de muchos procesos del negocio, combinada con la digitalización da información y el desarrollo de redes de telecomunicaciones de elevada capacidad ha tornado posible el trabajo tele-mediado, pudiendo este ser externalizado y/o re-localizado, conduciendo à introducción de una división de trabajo internacional no trabajo de procesamiento de información. Esta comunicación presentará algunos resultados derivados do proyecto europeo WORKS, donde son estudiados casos portugueses de empresas que justamente se integran en

Paula, AS, JHP Canejo, K. K. Mahesh, R. J. C. Silva, FMB Fernandes, R. M. S. Martins, AMA Cardoso, and N. Schell. "Study of the textural evolution in Ti-rich NiTi using synchrotron radiation." Nuclear Instruments & Methods in Physics Research Section B-Beam Interactions With Materials and Atoms. 246.1 (2006): 206-210. Abstract
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Meil, Pamela, Willem Trommel, Duco Bannink, Marcel Hoogenboom, Antonio Moniz, Tobias Woll, Czaba Makó, Péter Csizmadia, Miklós Illessy, Dag Balkmar, and Petros Linardos Comparative report - WORKS WP5 Policy pillar. ZBW - German National Library of Economics, 2006. Abstract

This report begins with some general information and analysis of policy and regulation that were the subjects of discussion and exchange in the policy pillar in the first phase of WORKS. The second section is a synthesis of country information on general principles and trends of policy and policy enforcement. This is followed by a summary of sector information for the sectors chosen by the qualitative pillar to be the objects of empirical analysis. The last summarises research questions and dimensions to be guidelines for carrying out case studies and capturing the relevance and effects of policy and institutions at the workplace. –

Barquinha, P., A. Pimentel, A. Marques, L. Pereira, R. Martins, and E. Fortunato. "Effect of UV and visible light radiation on the electrical performances of transparent TFTs based on amorphous indium zinc oxide." Journal of Non-Crystalline Solids. 352 (2006): 1756-1760. AbstractWebsite
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Martins, R., P. Almeida, P. Barquinha, L. Pereira, A. Pimentel, I. Ferreira, and E. Fortunato. "Electron transport and optical characteristics in amorphous indium zinc oxide films." Journal of Non-Crystalline Solids. 352 (2006): 1471-1474. AbstractWebsite
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Pereira, L., L. Raniero, P. Barquinha, E. Fortunato, and R. Martins. "Impedance study of the electrical properties of poly-Si thin film transistors." Journal of Non-Crystalline Solids. 352 (2006): 1737-1740. AbstractWebsite
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Barquinha, P., A. Pimentel, A. Marques, L. Pereira, R. Martins, and E. Fortunato. "Influence of the semiconductor thickness on the electrical properties of transparent TFTs based on indium zinc oxide." Journal of Non-Crystalline Solids. 352 (2006): 1749-1752. AbstractWebsite
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Auchere, F., S. R. Pauleta, P. Tavares, I. Moura, and JJG Moura. "Kinetics studies of the superoxide-mediated electron transfer reactions between rubredoxin-type proteins and superoxide reductases." Journal of Biological Inorganic Chemistry. 11 (2006): 433-444. AbstractWebsite

In this work we present a kinetic study of the superoxide-mediated electron transfer reactions between rubredoxin-type proteins and members of the three different classes of superoxide reductases (SORs). SORs from the sulfate-reducing bacteria Desulfovibrio vulgaris (Dv) and D. gigas (Dg) were chosen as prototypes of classes I and II, respectively, while SOR from the syphilis spyrochete Treponema pallidum (Tp) was representative of class III. Our results show evidence for different behaviors of SORs toward electron acceptance, with a trend to specificity for the electron donor and acceptor from the same organism. Comparison of the different k (app) values, 176.9 +/- 25.0 min(-1) in the case of the Tp/Tp electron transfer, 31.8 +/- 3.6 min(-1) for the Dg/Dg electron transfer, and 6.9 +/- 1.3 min(-1) for Dv/Dv, could suggest an adaptation of the superoxide-mediated electron transfer efficiency to various environmental conditions. We also demonstrate that, in Dg, another iron-sulfur protein, a desulforedoxin, is able to transfer electrons to SOR more efficiently than rubredoxin, with a k (app) value of 108.8 +/- 12.0 min(-1), and was then assigned as the potential physiological electron donor in this organism.

Zhang, S., L. Pereira, Z. Hu, L. Ranieiro, E. Fortonato, I. Ferreira, and R. Martins. "{Characterization of nanocrystalline silicon carbide films}." Journal of Non-Crystalline Solids. 352 (2006): 1410-1415. AbstractWebsite
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Barquinha, P., A. Pimentel, A. Marques, L. Pereira, R. Martins, and E. Fortunato. "{Effect of UV and visible light radiation on the electrical performances of transparent TFTs based on amorphous indium zinc oxide}." Journal of Non-Crystalline Solids. 352 (2006): 1756-1760. AbstractWebsite
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Martins, R., P. Almeida, P. Barquinha, L. Pereira, A. Pimentel, I. Ferreira, and E. Fortunato. "{Electron transport and optical characteristics in amorphous indium zinc oxide films}." Journal of Non-Crystalline Solids. 352 (2006): 1471-1474. AbstractWebsite
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