Bioactivity studies and chemical profile of the antidiabetic plant Genista tenera - Amélia P. Rauter; Alice Martins; Rui Lopes; Joana Ferreira; Luísa M. Serralheiro; Maria-Eduarda Araújo; Carlos Borges; Justino, Jorge; Filipa V. Silva; Margarida Goulart; Jane Thomas-Oates; João A. Rodrigues; et al. (Journal of Ethnopharmacology, 2008)

Byzantium: Byzantine-fault-tolerant database replication providing snapshot isolation - Preguiça, Nuno; Rodrigues, Rodrigo; Honorato, Cristóvão; João M. Lourenço (Proceedings of the Fourth conference on Hot topics in system dependability, 2008)
Database systems are a key component behind many of today's computer systems. As a consequence, it is crucial that database systems provide correct and continuous service despite unpredictable circumstances, such as software bugs or attacks. This paper presents the design of Byzantium, a Byzantine fault-tolerant database replication middleware that provides snapshot isolation (SI) semantics. SI is very popular because it allows increased concurrency when compared to serializability, while providing similar behavior for typical workloads. Thus, Byzantium improves on existing proposals by allowing increased concurrency and not relying on any centralized component. Our middleware can be used with off-the-shelf database systems and it is built on top of an existing BFT library.
n/a

Damage and Diagnosis of Masonry Bridges-A Case Study - Rodrigues, Neuza; António Ramos (1st Historical Mortars Conference, 2008)
n/a
n/a

Development of Structural Ceramics from Fly Ash and Shale - R. C. C. Monteiro, M. M. R. A. Lima, and C. S. Clemente (in Advanced Materials Forum Iv, Vol. 587-588. Materials Science Forum, 2008)

Dinosaur Frauds, Hoaxes and "Frankensteins": How to distinguish fake and genuine vertebrate fossils - O. Mateus; M Overbeeke; F Rita (Journal of Paleontological Techniques, 2008)
Dinosaurs and other fossils have been artificially enhanced, or totally forged, to increase their commercial value. The most problematic forgeries to detect are based on original fossils that are artificially assembled. Several techniques are suggested for detecting hoaxes: detailed visual examination, chemical analysis, Xray or CT-scan, and ultraviolet light. It is recommended that museums and paleontological researchers do not purchase and/or trade fossils lacking clear provenience information. Exceptions to that general rule should be closely examined using techniques described herein.
n/a

The EMD and its Use to Identify System Modes - Rato, R.T.; Ortigueira, M.D.; Batista, AG (Proceedings of the International Workshop on New Trends in Science and Technology, 2008)

The Empirical Mode Decomposition: A Useful Tool for Signal Analysis - Rato, R.T.; Ortigueira, M.D.; Batista, AG (New Signal Processing Research, 2008)

The Empirical Mode Decomposition: A Useful Tool for Signal Analysis - Rato, R.T.; Ortigueira, M.D.; Batista, AG (New Signal Processing Research, 2008)

Espaço Público: Contributos para a Coesão Territorial do Espaço Urbano - Pinto, A. J.; Remesar, A.; Amado, M. P. (5º CLME, 2008)

Estudo Experimental do Punçoamento Cíclico em Lajes Fungiformes Reforçadas com Pré-Esforço Transversal - Luis, Marta; António Ramos (Encontro Nacional Betão Estrutural 2008, 2008)
n/a
n/a

Higher order asymptotic formulas for traces of Toeplitz matrices with symbols in Hölder-Zygmund spaces - Karlovich, Alexei Yu. (Recent Advances in Matrix and Operator Theory. Operator Theory: Advances and Applications, 179, 2008)
We prove a higher order asymptotic formula for traces of finite block Toeplitz matrices with symbols belonging to Hölder-Zygmund spaces. The remainder in this formula goes to zero very rapidly for very smooth symbols. This formula refines previous asymptotic trace formulas by Szegő and Widom and complement higher order asymptotic formulas for determinants of finite block Toeplitz matrices due to Böttcher and Silbermann.

Isolation and characterization of a stress-inducible Dunaliella salina Lcy-beta gene encoding a functional lycopene beta-cyclase - Ana Ramos; Sacha Coesel; Ana Marques; Marta Rodrigues; Alexandra Baumgartner; João Noronha; Amélia Rauter; Bertram Brenig; João Varela (Applied Microbiology and Biotechnology, 2008)

Ligação Pilar - Fundação com Armaduras Salientes do Pilar, em Estruturas Pré-Fabricadas - Reguengo, R.; Lúcio, V.; Chastre, C. (2º Congresso Nacional de Pré-Fabricação em Betão, 2008)
A ligação pilar-fundação tem um papel fundamental no comportamento das estruturas pré-fabricadas, em particular, na presença de acções horizontais, como a acção dos sismos e do vento, que introduzem esforços elevados na base dos pilares. Um dos sistemas de ligação pilar-fundação usados em estruturas pré-fabricadas consiste em deixar na extremidade inferior dos pilares armaduras salientes que são introduzidas em negativos executados nas fundações. Estes negativos são posteriormente injectados com grout para garantir a ligação. No presente trabalho foram estudadas diferentes soluções de negativos para ligação das armaduras do pilar à fundação, tendo sido realizados ensaios monotónicos para analisar o seu comportamento. Nesta comunicação apresentam-se e discutem-se os resultados obtidos da análise experimental efectuada.
n/a

Ligação pilar – fundação com armaduras salientes do pilar, em estruturas pré-fabricadas – Ensaios monotónicos e ensaios cíclicos - Reguengo, R.; Lúcio, V.; Chastre, C. (Betão Estrutural 2008, 2008)
A ligação pilar-fundação tem um papel fundamental no comportamento das estruturas pré-fabricadas, em particular, na presença de acções horizontais, como a acção dos sismos e do vento. Um dos sistemas de ligação pilar-fundação usados em estruturas pré-fabricadas consiste em deixar na extremidade inferior dos pilares armaduras salientes que são introduzidas em negativos executados nas fundações, sejam elas sapatas ou maciços de encabeçamento de estacas. Estes negativos são posteriormente injectados com “grout” para garantir a ligação. Foram estudados diferentes soluções de negativos para ligação das armaduras do pilar na fundação. Foram realizados ensaios monotónicos e cíclicos, para analisar não só o comportamento às acções estáticas mas também para a acção sísmica. No presente trabalho apresentam-se os resultados obtidos com a análise experimental efectuada. O estudo realizado permite apresentar recomendações para projecto e quais os tipos de ligações com melhor desempenho.
n/a

A Metadata Driven Approach for Aspect-Oriented Requirements Analysis - S. Agostinho,; A. Moreira; Marques, A.; J. Araújo,; I. S. Brito; R. Ferreira,; R. Raminhos (10th International Conference on Enterprise Information Systems (ICEIS 2008), 2008)
n/a
n/a

A Model-Driven Traceability Framework to Software Product Line Development - A. Sousa,; U. Kulesza,; A. Rummler; N. Arquentil; R. Mitschke; A. Moreira; Amaral, Vasco; J. Araújo, (ECMDA Traceability Workshop ECMDA-TW ( 2008 Proceedings), 2008)
n/a
URL={http://modelbased.net/ecmda-traceability/images/papers/2008/ecmda-tw-proceedings08.pdf}

On the HHT, its problems, and some solutions - Rato, R.T.; Ortigueira, M.D.; Batista, AG (Mechanical Systems and Signal Processing, 2008)

Post-punching behaviour of prestressed concrete flat slabs - Ramos, A. Pinho; Lúcio, V J G (Magazine of Concrete Research, 2008)
The progressive collapse of structures generally results in the loss of human lives. Experience shows that flat slab structures are very sensitive to progressive collapse, which may cause serious accidents if special detailing is not provided. The post-punching behaviour of a column-supported slab is decisive in the progressive collapse development. This work presents the experimental research carried out to study the post-punching behaviour of prestressed concrete flat slabs. Six reduced-scale prestressed concrete flat slab models were tested. The tests were carried out in two different phases. In the first phase the models were loaded up to failure by punching. Afterwards, the models were loaded again to study the post-punching behaviour changes caused by the presence of unbonded, prestressed tendons and the influences of their distance to the column.
n/a

Reforço de Lajes Fungiformes – Anomalias, Causas e Soluções - Válter Lúcio; António Ramos; Faria, Duarte (SILE2008 – Seminário Internacional sobre Ligações Estruturais, 2008)
n/a
n/a

Rehabilitation of Historical Masonry Bridges - Rodrigues, Neuza; António Ramos; Branco, Fernando (1st International Conference Construction Heritage in Coastal and Marine Environments – Damage, Diagnostic, Maintenance and Rehabilitation, 2008)
n/a
n/a

A Scenario and Aspect-oriented Requirements and Agile Approach - J. Araújo,; J. Ribeiro (International Journal of Computer Science and Applications, 2008)
n/a
URL={http://www.tmrfindia.org/ijcsa/v5i3b4.pdf}

Strengthening of flat slabs with transverse reinforcement - Duarte, Inácio; Ramos, António M P; Lúcio, Válter J.G. (Proceedings of CCC, 2008)
n/a
n/a

Tomografia Computorizada na Deteccão de Fraudes em Fósseis - F Rita; O. Mateus; M Overbeeke (Acta Radiológica Portuguesa, 2008)
The material in analysis is the skull of an Ornitiquous Psittacosaurus of the China Cretaceous suspicious of being a fraud. The fossil described here appeared to be in very good condition and conservation. The skull is almost complete but because it is filled by sediment, this prevents an analyse of the intra-skull anatomy. With the intuition of confirming or not the existence of fossiled bone elements in the interior of the sedimented mass that filled the Psittacossaurus skull, it was submitted to a Computorized Tomography. The Psittacosaurus skull showed an unexpected absorption of the x-rays, because of the outstanding differences of density between the bone and the matrix due to the fact that the interior of the skull was composed by an amalgam of materials, where a less compact and relatively homogeneous material (soil and wax) was found and that material united and mounted the whole skull and the normal bone structures were non-existing. The capacity of the Computorized Axial Tomography of differentiating materials with different densities of absorption of x-rays, permitted an easy and reliable investigation and explained beyond doubt the quality of the fossil specimen studied, concluding with no doubt that in spite of the realistic aspect, we had come before a fraud.
n/a

Towards the Application of Model Based Design Methodology for Reliable Control Systems on HEP Experiments - B. Barroca,; Amaral, Vasco; M. Risoldi; Caprini, M.; A. Moreira; J. Araújo, (11th IEEE Nuclear Science Symposium, Proceedings, 2008)
n/a
URL={http://www.nss-mic.org/2008/NSSMain.asp}

Analysis of carbohydrates in Lupinus albus stems on imposition of water deficit, using porous graphitic carbon liquid chromatography-electrospray ionization mass spectrometry - Antonio, Carla; Pinheiro, Carla; Chaves, Maria Manuela; Ricardo, Candido Pinto; Ortuno, Maria Fernanda; Jane Thomas-Oates (Journal of Chromatography A, 2008)
n/a
Times Cited: 20

Analysis of carbohydrates in Lupinus albus stems on imposition of water deficit, using porous graphitic carbon liquid chromatography-electrospray ionization mass spectrometry - Antonio, Carla; Pinheiro, Carla; Chaves, Maria Manuela; Ricardo, Candido Pinto; Ortuno, Maria Fernanda; Jane Thomas-Oates (Journal of Chromatography A, 2008)
n/a
n/a

Byzantium: Byzantine-fault-tolerant database replication providing snapshot isolation - Preguiça, Nuno; Rodrigues, Rodrigo; Honorato, Cristóvão; Lourenço, João (Proceedings of the Fourth conference on Hot topics in system dependability, 2008)
Database systems are a key component behind many of today’s computer systems. As a consequence, it is crucial that database systems provide correct and continuous service despite unpredictable circumstances, such as software bugs or attacks. This paper presents the design of Byzantium, a Byzantine fault-tolerant database replication middleware that provides snapshot isolation (SI) semantics. SI is very popular because it allows increased concurrency when compared to serializability, while providing similar behavior for typical workloads. Thus, Byzantium improves on existing proposals by allowing increased concurrency and not relying on any centralized component. Our middleware can be used with off-the-shelf database systems and it is built on top of an existing BFT library.

Characterization of Ni-Ti (Shape Memory Alloy) Thin Film by in-situ XRD and Complementary ex-situ Techniques - Rui M. S. Martins; Schell, N.; Reuther, H.; Pereira, L.; Silva, R.J.C.; Mahesh, K.K.; Fernandes, F.M. Braz; Marques, AT; Silva, AF; Baptista, APM; Sa, C; Alves, FJLA; et al. (Advanced Materials Forum Iv, 2008)
n/a
n/a

Dehydrins in Lupinus albus: pattern of protein accumulation in response to drought - Pinheiro, C.; de Carvalho, MHC; Bartels, D; Ricarddo, CP; Chaves, M. M. (FUNCTIONAL PLANT BIOLOGY, 2008)
n/a
n/a

Dehydrins in Lupinus albus: pattern of protein accumulation in response to drought - Pinheiro, C.; de Carvalho, MHC; Bartels, D; Ricarddo, CP; Chaves, M. M. (FUNCTIONAL PLANT BIOLOGY, 2008)
n/a
n/a

Dinosaur Frauds, Hoaxes and "Frankensteins": How to distinguish fake and genuine vertebrate fossils - O. Mateus; M Overbeeke; F Rita (Journal of Paleontological Techniques, 2008)
n/a
n/a

An electrical gearbox by means of pole variation for induction and superconducting disc motor - S Inácio; D Inácio; J M Pina; Stanimir Valtchev; M V Neves; A L Rodrigues (Journal of Physics: Conference Series, 2008)
In this paper, a poly-phase disc motor innovative feeding and control strategy, based on a variable poles approach, and its application to a HTS disc motor, are presented. The stator windings may be electronically commutated to implement a 2, 4, 6 or 8 poles winding, thus changing the motor's torque?speed characteristics. The motor may be a conventional induction motor with a conductive disc rotor, or a new HTS disc motor, with conventional copper windings at its two iron semi-stators, and a HTS disc as a rotor. The conventional induction motor's operation principle is related with the induced electromotive forces in the conductive rotor. Its behaviour, characteristics (namely their torque?speed characteristics for different number of pole pairs) and modelling through Steinmetz and others theories are well known. The operation principle of the motor with HTS rotor, however, is rather different and is related with vortices' dynamics and pinning characteristics; this is a much more complex process than induction, and its modelling is quite complicated. In this paper, the operation was simulated through finite-elements commercial software, whereas superconductivity was simulated by the E-J power law. The Electromechanical performances of both motors where computed and are presented and compared. Considerations about the systems overall efficiency, including cryogenics, are also discussed.

An electrical gearbox by means of pole variation for induction and superconducting disc motor - S Inácio; D Inácio; J M Pina; Stanimir Valtchev; M V Neves; A L Rodrigues (Journal of Physics: Conference Series, 2008)
In this paper, a poly-phase disc motor innovative feeding and control strategy, based on a variable poles approach, and its application to a HTS disc motor, are presented. The stator windings may be electronically commutated to implement a 2, 4, 6 or 8 poles winding, thus changing the motor's torque?speed characteristics. The motor may be a conventional induction motor with a conductive disc rotor, or a new HTS disc motor, with conventional copper windings at its two iron semi-stators, and a HTS disc as a rotor. The conventional induction motor's operation principle is related with the induced electromotive forces in the conductive rotor. Its behaviour, characteristics (namely their torque?speed characteristics for different number of pole pairs) and modelling through Steinmetz and others theories are well known. The operation principle of the motor with HTS rotor, however, is rather different and is related with vortices' dynamics and pinning characteristics; this is a much more complex process than induction, and its modelling is quite complicated. In this paper, the operation was simulated through finite-elements commercial software, whereas superconductivity was simulated by the E-J power law. The Electromechanical performances of both motors where computed and are presented and compared. Considerations about the systems overall efficiency, including cryogenics, are also discussed.
n/a

An electrical gearbox by means of pole variation for induction and superconducting disc motor - S Inácio; D Inácio; J M Pina; S Valtchev; M V Neves; A L Rodrigues (Journal of Physics: Conference Series, 2008)
n/a
n/a

Establishment of a cell model of ALS disease: Golgi apparatus disruption occurs independently from apoptosis - Gomes, Catarina; Palma, Angelina S.; Almeida, Rui; Regalla, Manuela; McCluskey, Leo F.; Trojanowski, John Q.; Costa, Julia (Biotechnology Letters, 2008)
n/a
n/a

Highly stable transparent and conducting gallium-doped zinc oxide thin films for photovoltaic applications - Fortunato, E.; Raniero, L.; Silva, L.; A Gonçalves; Pimentel, A.; Barquinha, P.; Aguas, H.; Pereira, L.; Gonçalves, G.; Ferreira, I. (Solar Energy Materials and Solar Cells, 2008)
n/a
n/a

Highly stable transparent and conducting gallium-doped zinc oxide thin films for photovoltaic applications - Fortunato, E.; Raniero, L.; Silva, L.; Goncalves, A.; Pimentel, A.; Barquinha, P.; Aguas, H.; Pereira, L.; GONCALVES, G; Ferreira, I.; others (Solar Energy Materials and Solar Cells, 2008)
n/a
n/a

Interfaces Usability for Monitoring Systems - Rita Ribeiro; Isabel L. Nunes (Encyclopedia of Decision Making and Decision Support Technologies, 2008)
n/a
n/a

Ion jelly: A tailor-made conducting material for smart electrochemical devices - P. Vidinha; Louren?o, N.M.T.; Pinheiro, C.; A. R. Brás; T. Carvalho; Santos-Silva, T; Mukhopadhyay, A.; Romão, MJ; Parola, J.; Dionisio, M.; Cabral,J.M.S.; Afonso, CAM; et al. (Chemical Communications, 2008)
n/a
n/a

Ligação Pilar - Fundação em Estruturas Pré-Fabricadas. Estudo experimental - Reguengo, R.; Lúcio, V.; Chastre, C. (Seminário SILE’08, 2008)
n/a
n/a

Microstructure and gas-sensing properties of sol-gel ZnO thin films - Musat, V.a; Rego, A.M.c; Monteiro, R.b; Fortunato, E.b (Thin Solid Films, 2008)
The paper presents the properties of zinc oxide thin films deposited on glass substrate via dip-coating technique. Zinc acetate dehydrate, ethanol and monoethanol amine were used as starting materials and N2 gas was used as thermal annealing atmosphere for film crystallization. The effect of withdrawal speed on the crystalline structure, morphology, zinc and nitrogen chemical states, optical, electrical and gas-sensing properties of the thin films has been investigated using X-ray diffraction, atomic force microscopy, X-ray photoelectron spectroscopy, optical transmittance and photoreduction-ozone reoxidation data. © 2007 Elsevier B.V. All rights reserved.
cited By 58

Modelling metallothionein induction in the liver of Sparus aurata exposed to metal-contaminated sediments - Costa, P.M.; Repolho, T.; Caeiro, S.; Diniz, M.E.; Moura, I; Costa, M.H. (Ecotoxicology and Environmental Safety, 2008)
n/a
cited By (since 1996)18

Molecular determinants of ligand specificity in family 11 carbohydrate binding modules - an NMR, X-ray crystallography and computational chemistry approach - Viegas, Aldino; Bras, Natercia F.; Cerqueira, Nuno M. F. S. A.; Fernandes, Pedro Alexandrino; Prates, Jose A. M.; Fontes, Carlos M. G. A.; Bruix, Marta; Romao, Maria Joao; Carvalho, Ana Luisa; Ramos, Maria Joao; Macedo, Anjos L; Cabrita, Eurico J. (Febs Journal, 2008)
n/a
n/a

Power electronics performance in cryogenic environment: evaluation for use in HTS power devices - P Pereira; S Valtchev; J. Pina; A Gonçalves; M Ventim Neves; A L Rodrigues (Journal of Physics: Conference Series, 2008)
Power electronics (PE) plays a major role in electrical devices and systems, namely in electromechanical drives, in motor and generator controllers, and in power grids, including high-voltage DC (HVDC) power transmission. PE is also used in devices for the protection against grid disturbances, like voltage sags or power breakdowns. To cope with these disturbances, back-up energy storage devices are used, like uninterruptible power supplies (UPS) and flywheels. Some of these devices may use superconductivity. Commercial PE semiconductor devices (power diodes, power MOSFETs, IGBTs, power Darlington transistors and others) are rarely (or never) experimented for cryogenic temperatures, even when designed for military applications. This means that its integration with HTS power devices is usually done in the hot environment, raising several implementation restrictions. These reasons led to the natural desire of characterising PE under extreme conditions, e. g. at liquid nitrogen temperatures, for use in HTS devices. Some researchers expect that cryogenic temperatures may increase power electronics' performance when compared with room-temperature operation, namely reducing conduction losses and switching time. Also the overall system efficiency may increase due to improved properties of semiconductor materials at low temperatures, reduced losses, and removal of dissipation elements. In this work, steady state operation of commercial PE semiconductors and devices were investigated at liquid nitrogen and room temperatures. Performances in cryogenic and room temperatures are compared. Results help to decide which environment is to be used for different power HTS applications.

Power electronics performance in cryogenic environment: evaluation for use in HTS power devices - P Pereira; S Valtchev; J. Pina; A Gonçalves; M Ventim Neves; A L Rodrigues (Journal of Physics: Conference Series, 2008)
Power electronics (PE) plays a major role in electrical devices and systems, namely in electromechanical drives, in motor and generator controllers, and in power grids, including high-voltage DC (HVDC) power transmission. PE is also used in devices for the protection against grid disturbances, like voltage sags or power breakdowns. To cope with these disturbances, back-up energy storage devices are used, like uninterruptible power supplies (UPS) and flywheels. Some of these devices may use superconductivity. Commercial PE semiconductor devices (power diodes, power MOSFETs, IGBTs, power Darlington transistors and others) are rarely (or never) experimented for cryogenic temperatures, even when designed for military applications. This means that its integration with HTS power devices is usually done in the hot environment, raising several implementation restrictions. These reasons led to the natural desire of characterising PE under extreme conditions, e. g. at liquid nitrogen temperatures, for use in HTS devices. Some researchers expect that cryogenic temperatures may increase power electronics' performance when compared with room-temperature operation, namely reducing conduction losses and switching time. Also the overall system efficiency may increase due to improved properties of semiconductor materials at low temperatures, reduced losses, and removal of dissipation elements. In this work, steady state operation of commercial PE semiconductors and devices were investigated at liquid nitrogen and room temperatures. Performances in cryogenic and room temperatures are compared. Results help to decide which environment is to be used for different power HTS applications.
n/a

Power electronics performance in cryogenic environment: evaluation for use in HTS power devices - P Pereira; S Valtchev; J. Pina; A Gonçalves; M Ventim Neves; A L Rodrigues (Journal of Physics: Conference Series, 2008)
Power electronics (PE) plays a major role in electrical devices and systems, namely in electromechanical drives, in motor and generator controllers, and in power grids, including high-voltage DC (HVDC) power transmission. PE is also used in devices for the protection against grid disturbances, like voltage sags or power breakdowns. To cope with these disturbances, back-up energy storage devices are used, like uninterruptible power supplies (UPS) and flywheels. Some of these devices may use superconductivity. Commercial PE semiconductor devices (power diodes, power MOSFETs, IGBTs, power Darlington transistors and others) are rarely (or never) experimented for cryogenic temperatures, even when designed for military applications. This means that its integration with HTS power devices is usually done in the hot environment, raising several implementation restrictions. These reasons led to the natural desire of characterising PE under extreme conditions, e. g. at liquid nitrogen temperatures, for use in HTS devices. Some researchers expect that cryogenic temperatures may increase power electronics' performance when compared with room-temperature operation, namely reducing conduction losses and switching time. Also the overall system efficiency may increase due to improved properties of semiconductor materials at low temperatures, reduced losses, and removal of dissipation elements. In this work, steady state operation of commercial PE semiconductors and devices were investigated at liquid nitrogen and room temperatures. Performances in cryogenic and room temperatures are compared. Results help to decide which environment is to be used for different power HTS applications.
n/a

Power electronics performance in cryogenic environment: Evaluation for use in HTS power devices - P Pereira; S Valtchev; J. Pina; Gon?alves, A.; M V Neves; A L Rodrigues (Journal of Physics: Conference Series, 2008)
n/a
n/a

Resolving the phylogenetic and taxonomic status of dark-spored teleomorph genera in the Botryosphaeriaceae - Phillips, AJL; Alves, A; Pennycook, SR; Johnston, PR; Ramaley, A; Akulov, A; Crous, PW (Persoonia, 2008)
n/a
n/a

Rolling bearing fault detection and isolation – A didactic study - Roque, A A; Silva, Tiago A.N.; Calado, J M F; Dias, J C Q (World Scientific and Engineering Academy and Society (WSEAS), 2008)
n/a
n/a
Keywords: condition based maintenance.; Fault detection; fault diagnosis; fault isolation; rolling bearing

A test rig for thrust force measurements of an all HTS linear synchronous motor - J. Pina; P Pereira; S Valtchev; A Gonçalves; M Ventim Neves; A Alvarez; L Rodrigues (Journal of Physics: Conference Series, 2008)
This paper presents the design of a test rig for an all HTS linear synchronous motor. Although this motor showed to have several unattractive characteristics, its design raised a number of problems which must be considered in future HTS machines design. HTS electromagnetic properties led to the development of new paradigms in electrical machines and power systems, as e. g. in some cases iron removal and consequent assembly of lighter devices. This is due to superconductor's ability to carry high currents with minimum losses and consequent generation in the surrounding air of flux densities much higher than the allowed by ferromagnetic saturation. However, severe restrictions in HTS power devices design that goes further beyond cryogenic considerations must be accounted in. This is usually the case when BSCCO tapes are used as conductors. Its bending limitations and the presence of flux components perpendicular to tape surface, due to the absence of iron, have to be considered for it may turn some possible applications not so attractive or even practically unfeasible. An all HTS linear synchronous motor built by BSCCO tapes as armature conductors and two trapped-flux YBCO bulks in the mover was constructed and thrust force measurements are starting to be performed. Although the device presents severe restrictions due to the exposed and other reasons, it allowed systematising its design. A pulsed-field magnetiser to generate opposite fluxes for both YBCO bulks is also detailed. Thrust force numerical predictions were already derived and presented.

A test rig for thrust force measurements of an all HTS linear synchronous motor - J. Pina; P Pereira; S Valtchev; A Gonçalves; M Ventim Neves; A Alvarez; L Rodrigues (Journal of Physics: Conference Series, 2008)
This paper presents the design of a test rig for an all HTS linear synchronous motor. Although this motor showed to have several unattractive characteristics, its design raised a number of problems which must be considered in future HTS machines design. HTS electromagnetic properties led to the development of new paradigms in electrical machines and power systems, as e. g. in some cases iron removal and consequent assembly of lighter devices. This is due to superconductor's ability to carry high currents with minimum losses and consequent generation in the surrounding air of flux densities much higher than the allowed by ferromagnetic saturation. However, severe restrictions in HTS power devices design that goes further beyond cryogenic considerations must be accounted in. This is usually the case when BSCCO tapes are used as conductors. Its bending limitations and the presence of flux components perpendicular to tape surface, due to the absence of iron, have to be considered for it may turn some possible applications not so attractive or even practically unfeasible. An all HTS linear synchronous motor built by BSCCO tapes as armature conductors and two trapped-flux YBCO bulks in the mover was constructed and thrust force measurements are starting to be performed. Although the device presents severe restrictions due to the exposed and other reasons, it allowed systematising its design. A pulsed-field magnetiser to generate opposite fluxes for both YBCO bulks is also detailed. Thrust force numerical predictions were already derived and presented.
n/a

A test rig for thrust force measurements of an all HTS linear synchronous motor - J. Pina; P Pereira; S Valtchev; A Gonçalves; M Ventim Neves; A Alvarez; L Rodrigues (Journal of Physics: Conference Series, 2008)
This paper presents the design of a test rig for an all HTS linear synchronous motor. Although this motor showed to have several unattractive characteristics, its design raised a number of problems which must be considered in future HTS machines design. HTS electromagnetic properties led to the development of new paradigms in electrical machines and power systems, as e. g. in some cases iron removal and consequent assembly of lighter devices. This is due to superconductor's ability to carry high currents with minimum losses and consequent generation in the surrounding air of flux densities much higher than the allowed by ferromagnetic saturation. However, severe restrictions in HTS power devices design that goes further beyond cryogenic considerations must be accounted in. This is usually the case when BSCCO tapes are used as conductors. Its bending limitations and the presence of flux components perpendicular to tape surface, due to the absence of iron, have to be considered for it may turn some possible applications not so attractive or even practically unfeasible. An all HTS linear synchronous motor built by BSCCO tapes as armature conductors and two trapped-flux YBCO bulks in the mover was constructed and thrust force measurements are starting to be performed. Although the device presents severe restrictions due to the exposed and other reasons, it allowed systematising its design. A pulsed-field magnetiser to generate opposite fluxes for both YBCO bulks is also detailed. Thrust force numerical predictions were already derived and presented.
n/a

A test rig for thrust force measurements of an all HTS linear synchronous motor - J. Pina; P Pereira; S Valtchev; Gon?alves, A.; M V Neves; A Alvarez; L Rodrigues (Journal of Physics: Conference Series, 2008)
n/a
n/a

Tomografia Computorizada na Deteccão de Fraudes em Fósseis - F Rita; O. Mateus; M Overbeeke (Acta Radiológica Portuguesa, 2008)
n/a
n/a

Tomografia Computorizada na Deteccão de Fraudes em Fósseis - F Rita; O. Mateus; M Overbeeke (Acta Radiológica Portuguesa, 2008)
n/a
n/a

Topic 1: Support Tools and Environments - Dikaiakos, Marios; Rana, Omer; Ur, Shmuel; Lourenço, João (Euro-Par 2008 Parallel Processing, 2008)
The spread of systems that provide parallelism either ‘‘in-the-large’’ (grid infrastructures, clusters) or ‘‘in-the-small’’ (multi-core chips), creates new opportunities for exploiting parallelism in a wider spectrum of application domains. However, the increasing complexity of parallel and distributed platforms renders the programming, the use, and the management of these systems a costly endeavor that requires advanced expertise and skills. Therefore, there is an increasing need for powerful support tools and environments that will help end-users, application programmers, software engineers and system administrators to manage the increasing complexity of parallel and distributed platforms.

Topic 1: Support Tools and Environments - Dikaiakos, Marios; Rana, Omer; Ur, Shmuel; João M. Lourenço (Euro-Par 2008 Parallel Processing, 2008)
The spread of systems that provide parallelism either «in-the-large» (grid infrastructures, clusters) or «in-the-small» (multi-core chips), creates new opportunities for exploiting parallelism in a wider spectrum of application domains. However, the increasing complexity of parallel and distributed platforms renders the programming, the use, and the management of these systems a costly endeavor that requires advanced expertise and skills. Therefore, there is an increasing need for powerful support tools and environments that will help end-users, application programmers, software engineers and system administrators to manage the increasing complexity of parallel and distributed platforms.
n/a

{Characterization of Ni-Ti (Shape Memory Alloy) Thin Film by in-situ XRD and Complementary ex-situ Techniques} - Martins; Rui, M. S.; Schell; N.; Reuther; H. (2008)
n/a
n/a

{Optical and Microstructural Investigations of Porous Silicon Coated with a-Si:H using PECVD Technique} - Prabakaran; R.; Aguas; H.; Pereira; L. (2008)
n/a
n/a

{Water cavities of sH clathrate hydrate stabilized by molecular hydrogen: Phase equilibrium measurements} - Duarte, A.R.C.; Shariati, A.; Rovetto, L.J.; Peters, C. J. (Journal of Physical Chemistry B, 2008)
In this experimental phase equilibrium study, we show for the first time that it is possible to stabilize structure sH of hydrogen clathrate hydrate with the help of some selected promoters. It was established that the formation pressures of these systems are significantly higher than that of structure sII of hydrogen clathrate hydrate when tetrahydrofuran (THF) is used as a promoter. Although no experimental evidence is available yet, it is estimated that the hydrogen storage capacity of structure sH can be as high as 1.4 wt {%} of H 2 , which is about 40{%} higher compared to the hydrogen storage capacity in structure sH. © 2008 American Chemical Society.
n/a

Implications of partial immunity on the prospects for tuberculosis control by post-exposure interventions - Gomes, M. Gabriela M.; Rodrigues, Paula; Hilker, Frank M.; Mantilla-Beniers, Natalia B.; Muehlen, Marion; Paulo, Ana Cristina; Medley, Graham F. (JOURNAL OF THEORETICAL BIOLOGY, 2007)
n/a
n/a

Drug resistance in tuberculosis - a reinfection model - Rodrigues, Paula; Gomes, M. Gabriela M.; Rebelo, Carlota (THEORETICAL POPULATION BIOLOGY, 2007)
n/a
n/a

Numerical and Experimental Comparison of Electromechanical Properties and Efficiency of HTS and Ferromagnetic Hysteresis Motors - David Inácio; João Pina; Anabela Gonçalves; Mário Neves; Amadeu Rodrigues (8th European Conference on Applied Superconductivity (EUCAS), 2007)
Hysteresis motors are very attractive in a wide range of fractional power applications, due to its torque-speed characteristics and simplicity of construction. This motor's performance is expected to improve when HTS rotors are used, and in fact, hysteresis motors have shown to be probably the most viable electrical machines using HTS materials. While these motors, either conventional or HTS, are both hysteresis motors, they base their operation on different physical phenomena: hysteretic behaviour in conventional ferromagnetic materials is due to the material's non-linear magnetic properties, while in HTS materials the hysteresis has an ohmic nature and is related with vortices' dynamics. In this paper, theoretical aspects of both conventional and HTS hysteresis motors are discussed, its operation principles are highlighted, and the characteristics of both motors are presented. The characteristics, obtained both by experimental tests and numerical simulation (made with commercial software), are compared, in order to evaluate not only the motor's electromechanical performances but also the overall systems efficiency, including cryogenics for the HTS device.
n/a

Power Electronics Performance in Cryogenic Environment: Evaluation for Use in HTS Power Devices - Pedro Pereira; S Valtchev; João Pina; Anabela Gonçalves; Mário Neves; Amadeu Rodrigues (8th European Conference on Applied Superconductivity (EUCAS), 2007)
Power electronics (PE) plays a major role in electrical devices and systems, namely in electromechanical drives, in motor and generator controllers, and in power grids, including high-voltage DC (HVDC) power transmission. PE is also used in devices for the protection against grid disturbances, like voltage sags or power breakdowns. To cope with these disturbances, back-up energy storage devices are used, like uninterruptible power supplies (UPS) and flywheels. Some of these devices may use superconductivity. Commercial PE semiconductor devices (power diodes, power MOSFETs, IGBTs, power Darlington transistors and others) are rarely (or never) experimented for cryogenic temperatures, even when designed for military applications. This means that its integration with HTS power devices is usually done in the hot environment, raising several implementation restrictions. These reasons led to the natural desire of characterising PE under extreme conditions, e. g. at liquid nitrogen temperatures, for use in HTS devices. Some researchers expect that cryogenic temperatures may increase power electronics' performance when compared with room-temperature operation, namely reducing conduction losses and switching time. Also the overall system efficiency may increase due to improved properties of semiconductor materials at low temperatures, reduced losses, and removal of dissipation elements. In this work, steady state operation of commercial PE semiconductors and devices were investigated at liquid nitrogen and room temperatures. Performances in cryogenic and room temperatures are compared. Results help to decide which environment is to be used for different power HTS applications

Power Electronics Performance in Cryogenic Environment: Evaluation for Use in HTS Power Devices - Pedro Pereira; S Valtchev; João Pina; Anabela Gonçalves; Mário Neves; Amadeu Rodrigues (8th European Conference on Applied Superconductivity (EUCAS), 2007)
Power electronics (PE) plays a major role in electrical devices and systems, namely in electromechanical drives, in motor and generator controllers, and in power grids, including high-voltage DC (HVDC) power transmission. PE is also used in devices for the protection against grid disturbances, like voltage sags or power breakdowns. To cope with these disturbances, back-up energy storage devices are used, like uninterruptible power supplies (UPS) and flywheels. Some of these devices may use superconductivity. Commercial PE semiconductor devices (power diodes, power MOSFETs, IGBTs, power Darlington transistors and others) are rarely (or never) experimented for cryogenic temperatures, even when designed for military applications. This means that its integration with HTS power devices is usually done in the hot environment, raising several implementation restrictions. These reasons led to the natural desire of characterising PE under extreme conditions, e. g. at liquid nitrogen temperatures, for use in HTS devices. Some researchers expect that cryogenic temperatures may increase power electronics' performance when compared with room-temperature operation, namely reducing conduction losses and switching time. Also the overall system efficiency may increase due to improved properties of semiconductor materials at low temperatures, reduced losses, and removal of dissipation elements. In this work, steady state operation of commercial PE semiconductors and devices were investigated at liquid nitrogen and room temperatures. Performances in cryogenic and room temperatures are compared. Results help to decide which environment is to be used for different power HTS applications
n/a

Crystal structure of the 16 heme cytochrome from Desulfovibrio gigas: A glycosylated protein in a sulphate-reducing bacterium - Santos-Silva, Teresa; Dias, Joao Miguel; Dolla, Alain; Durand, Marie-Claire; Goncalves, Luisa L.; Lampreia, Jorge; Moura, Isabel; Romao, Maria Joao (JOURNAL OF MOLECULAR BIOLOGY, 2007)
Sulphate-reducing bacteria have a wide variety of periplasmic cytochromes involved in electron transfer from the periplasm to the cytoplasm. HmcA is a high molecular mass cytochrome of 550 amino acid residues that harbours 16 c-type heme groups. We report the crystal structure of HmcA isolated from the periplasm of Desulfovibrio gigas. Crystals were grown. using polyethylene glycol 8K and zinc acetate, and diffracted beyond 2.1 angstrom resolution. A multiple-wavelength anomalous dispersion experiment at the iron absorption edge enabled us to obtain good-quality phases for structure solution and model building. DgHmcA has a V-shape architecture, already observed in HmcA isolated from Desulfovibrio vulgaris Hildenborough. The presence of an oligosaccharide molecule covalently bound to an Asn residue was observed in the electron density maps of DgHmcA and confirmed by mass spectrometry. Three modified monosaccharides appear at the highly hydrophobic vertex, possibly acting as an anchor of the protein to the cytoplasmic membrane. (c) 2007 Elsevier Ltd. All rights reserved.

Developing Interoperability in Mass Customisation Information Systems - Jardim-Gonçalves Ricardo; Grilo Antonio; Steiger-Garcao Adolfo (Mass Customisation Information Systems in Business, 2007)
n/a
n/a

A framework for measuring value in business interoperability - Grilo A; Jardim-Goncalves R; Cruz-Machado V (2007 IEEE INTERNATIONAL CONFERENCE ON INDUSTRIAL ENGINEERING AND ENGINEERING MANAGEMENT, VOLS 1-4, 2007)
n/a
n/a

A framework for measuring value in business interoperability - Grilo A; Jardim-Goncalves R; Cruz-Machado V (2007 IEEE INTERNATIONAL CONFERENCE ON INDUSTRIAL ENGINEERING AND ENGINEERING MANAGEMENT, VOLS 1-4, 2007)
n/a
n/a

Influence of humidity on the electrical charging properties of cork agglomerates - Lanca MC; Wirges W; Neagu ER; Gerhard R; Marat-MendeS J (Journal of Non-Crystalline Solids, 2007)
n/a
n/a

A methodology using Domain Ontology and SOA for better interoperability in AEC mass customization - Grilo Antonio; Jardim-Goncalves Ricardo; Steiger-Garcao Adolfo (2007)
n/a
n/a

A new lupene triterpenetriol and anticholinesterase activity of Salvia sclareoides - Rauter, Amelia P.; Branco, Isabel; Lopes, Rui G.; Justino, Jorge; Silva, Filipa V. M.; Noronha, Joao P.; Cabrita, Eurico J.; Brouard, Ignacio; Bermejo, Jaime (Fitoterapia, 2007)
n/a
n/a

Case Study in the Design of HTS Machines: an All Superconducting Linear Synchronous Motor - João Pina; Mário Neves; Amadeu Rodrigues (1st International Conference on Power Engineering, Energy and Electrical Drives, POWERENG, 2007)
The electric and magnetic properties of high temperature superconductors and the possibility to cool them by cheap liquid nitrogen makes them attractive in power applications. An all superconducting linear synchronous motor is presented in this paper in order to quantify the benefits and disadvantages of such applications. The term ?all superconducting? is related with the absence of copper conductors and iron parts. Certain characteristics of the superconducting materials impose severe restrictions when used, e.g., as armature windings. A numerical method for deriving the thrust and lift forces developed in such a motor, driven by a typical current inverter, is presented.
n/a
Keywords: High Temperature Superconductivity; Ironless Linear Motor; superconducting machines

Amorphous/nanocrystalline silicon biosensor for the specific identification of unamplified nucleic acid sequences using gold nanoparticle probes - Martins, Rodrigo; Baptista, Pedro; Raniero, Leandro; Doria, Gonçalo; Silva, Leonardo; Franco, Ricardo; Fortunato, Elvira (Applied Physics Letters, 2007)

Aspect-Oriented Analysis Applied to the Space Domain - A. Marques,; R. Raminhos; R. ferreira; R. Ribeiro; S. Agostinho; J. Araújo,; A. Moreira (ICEIS 2007, 2007)
n/a
n/a

Comportamento Pós-Rotura de Lajes Fungiformes Pré Esforçadas - Ramos, António Pinho; Válter Lúcio (Revista Portuguesa de Engenharia de Estruturas, 2007)
n/a
n/a

Cyclic compression behaviour of polymer concrete - Rodrigues, C. Chastre; Silva, Manuel A. G. (Journal of Polymer Engineering, 2007)
Polymeric mortars or concrete are special building materials which can be used to repair or strengthen localized areas of structural elements. Following research on the behaviour of retrofitting reinforced concrete circular columns with FRP composite materials and bearing in mind the high strength of polymer concretes, it was decided to develop a solution to seismic retrofit of reinforced concrete columns with polymer concrete. The mechanical characteristics of different polymer concretes and especially their performance when subjected to cyclic axial compression, several bending tests, and monotonic and cyclic axial compression tests were studied, namely the compressive strength, the tensile strength on bending and the Young's modulus. Columns were also tested under axial compression and cyclic horizontal loads. The results of these tests are shown and interpreted. It is concluded that the improved behaviour in monotonic compression of polymer concrete is essentially associated with better strength characteristics of resin, whereas its superior behaviour under cyclic loading is linked to a smoother aggregate grading curve.
ISI Document Delivery No.: 238EUTimes Cited: 1Cited Reference Count: 17Rodrigues, C. Chastre Silva, Manuel A. G.
Keywords: cyclic compression; polymer concretes; polymeric mortars; reinforced concrete columns; Retrofitting

Dealing with the i*Models with Aspects - F. Alencar,; A. Moreira; J. Araújo,; J. F. B. Castro; R. Ramos; C. Silva (RCIS 2007, 2007)
n/a
n/a

Early Aspects at ICSE 2007: Workshop on Aspect-Oriented Requirements Engineering and Architecture Design - R. Chitchyan,; A. Rashid; A. Moreira; J. Araújo,; P. Clements; E. Baniassad; B. Tekinerdogan (ICSE Companion 2007, 2007)
n/a
n/a

i* with Aspects: Evaluating Understandability - R. Ramos,; F. Alencar; J. Araújo,; A. Moreira; J. F. B. Castro; R. D. Penteado (Workshop em Engenharia de Requisitos, 2007)
n/a
n/a

A new lupene triterpenetriol and anticholinesterase activity of Salvia sclareoides - Amélia P. Rauter; Branco, Isabel; Lopes, Rui G.; Justino, Jorge; Silva, Filipa V. M.; João P. Noronha; Cabrita, Eurico J.; Brouard, Ignacio; Bermejo, Jaime (Fitoterapia, 2007)

Potentially Biodegradable Polymers based on α- or β-Pinene and Sugar Derivatives or Styrene, Obtained under Normal Conditions and Microwave Irradiation - M. T. Barros; K. T. Petrova; Ramos, A. M. (Eur. J. Org. Chem, 2007)

Quase normalidade e inferência para séries de estudos emparelhadas - Luís Ramos (Universidade Nova de Lisboa, 2007)
We use the almost normality approach to derive the models we use. Polynomial almost normality is presented in a first chapter. Thus we show that low degree polynomials on independent normal variables with small variation coefficients are very approximately normal distributed. This result is then used do derive models for series of studies assuming normality and independence for the initial observations and low variation coefficients. We then apply this models first for single series and then for matched series of studies. We will assume that the matched series are associated to the treatments and orthogonal design. The special case of prime basis factorials is considered.

A Traceability Method for Crosscutting Concerns with transformation rules - M. S. Tabares,; A. Moreira,; R. Anaya,; F. Arango; J. Araújo, (Workshop on Early Aspects at ICSE: Aspect-oriented requirements engineering and architectural design, 28th International Conference on Software Engineering (ICSE 2007), 2007)
n/a
n/a

Crystal Structure of the 16 Heme Cytochrome from Desulfovibrio gigas: A Glycosylated Protein in a Sulphate-reducing Bacterium - Santos-Silva, T; Dias, JM; Dolla, A.; Durand, M.-C.; Gon?alves, L.L.; Lampreia, J; Moura, I; Romão, MJ (Journal of Molecular Biology, 2007)
n/a
n/a

Detecção de defeitos em rolamentos – Uma aproximação didáctica - Roque, A A; Silva, Tiago A.N.; Calado, J M F; Dias, J C Q (IEEE Education Society, 2007)
n/a
n/a

Development and validation of an HPLC/UV method for quantification of bioactive peptides in fermented milks - Ferreira, I.M.P.L.V.O.; Eca, R.; Pinho, O.; Tavares, P.; Pereira, A.; Roque, A. C. (Journal of Liquid Chromatography & Related Technologies, 2007)
The simultaneous separation and quantification of two casein peptides (IPP, VPP) presenting potent inhibitory activity of angiotensin-converting-enzyme (ACE) and casein in fermented milks was developed. Gradient elution was carried out at a flow-rate of 1 mL/min, using a mixture of two solvents. Solvent A was 0.1% TFA in water and solvent B was acetonitrile-water-trifluoracetic acid 95:5:0.1. The effluent was monitored by UV detector at 214 nm. Calibration curves were constructed in the interval of 0.01-1.0 mg/mL for VPP, 0.005-1.0 mg/mL for IPP, and 0.05-3.0 mg/mL for casein. R 2 invariably exceeded 0.999. The detection limits were 0.004 for VPP, 0.002 mg/mL for IPP, and 0.02 mg/mL for casein. Repeatability of the method was evaluated by six consecutive injections of two standard solutions containing VPP, IPP, and casein. The RSD values for concentration were all below 5.08%. Recovery studies were carried out to determine the accuracy of the method. Recoveries ranged between 88 and 98.2%. The methodology was applied, not only, for the monitorization of VPP, IPP, and casein in commercial fermented milks labeled as presenting anti hypertensive properties, but also, in milk with different degrees of fermentation by L Helveticus, and in other commercial functional fermented milks, such as, those presenting cholesterol lowering properties.
Times Cited: 8 Ferreira, Isabel M. P. L. V. O. Eca, Rosario Pinho, Olivia Tavares, Pedro Pereira, Alice Roque, Ana Cecilia

Differences between Amorphous and Nanostructured Silicon Films and Their Application in Solar Cell - Raniero, L.; Ferreira, I.; Fortunato, E.; Martins, R. (High Temperature Material Processes (An International Quarterly of High-Technology Plasma Processes), 2007)
n/a
n/a

Differences between amorphous and nanostructured silicon films and their application in solar cell - Raniero, L.a , Ferreira, I.b , Fortunato, E.b , Martins, R.b (High Temperature Material Processes, 2007)
Nanostructured silicon thin films were produced in a single PECVD (Plasma Enhanced Chemical Vapour Deposition) reactor using an excitation frequency of 27.12 MHz. The process parameters were selected to allow the films' production to be performed at the transition region (from amorphous to microcrystalline), aiming their use in solar cells. The real and imaginary parts of pseudo-dielectric function of these nanostructured films show a shift to higher energies and the order factor reveals an improvement on the short atomic range order of the films produced. The solar cells with a structure of ZGO/p-a-SiC:H/buffer1/buffer2/i-(nc/a-Si:H)/n-a-Si:H/Ag/Al were deposited with nanostructured intrinsic layer, showing a good performances, with current densities of about 14.48 mA/cm2, open circuit voltage of 0.94 V, and fill factor of 0.67, which lead to efficiencies of 9.12%. The solar cell degradation study performed under AM1.5 spectrum conditions up to 100 hours revealed a decrease on the solar cell efficiency of about 8.11%, mainly related to the decreasing of current density. Despite that, the open circuit voltage increases slightly after the degradation.
cited By 2

An Electrical Gearbox by means of pole variation for induction and superconducting disc motor - S Inácio; D Inácio; J. Pina; S Valtchev; M Ventim Neves; A. Rodrigues (8th European Conference on Applied Superconductivity (EUCAS), 2007)
In this paper, a poly-phase disc motor innovative feeding and control strategy, based on a variable poles approach, and its application to a HTS disc motor, are presented. The stator windings may be electronically commutated to implement a 2, 4, 6 or 8 poles winding, thus changing the motor's torque?speed characteristics. The motor may be a conventional induction motor with a conductive disc rotor, or a new HTS disc motor, with conventional copper windings at its two iron semi-stators, and a HTS disc as a rotor. The conventional induction motor's operation principle is related with the induced electromotive forces in the conductive rotor. Its behaviour, characteristics (namely their torque?speed characteristics for different number of pole pairs) and modelling through Steinmetz and others theories are well known. The operation principle of the motor with HTS rotor, however, is rather different and is related with vortices' dynamics and pinning characteristics; this is a much more complex process than induction, and its modelling is quite complicated. In this paper, the operation was simulated through finite-elements commercial software, whereas superconductivity was simulated by the E-J power law. The Electromechanical performances of both motors where computed and are presented and compared. Considerations about the systems overall efficiency, including cryogenics, are also discussed.

An Electrical Gearbox by means of pole variation for induction and superconducting disc motor - S Inácio; D Inácio; J. Pina; S Valtchev; M Ventim Neves; A. Rodrigues (8th European Conference on Applied Superconductivity (EUCAS), 2007)
In this paper, a poly-phase disc motor innovative feeding and control strategy, based on a variable poles approach, and its application to a HTS disc motor, are presented. The stator windings may be electronically commutated to implement a 2, 4, 6 or 8 poles winding, thus changing the motor's torque?speed characteristics. The motor may be a conventional induction motor with a conductive disc rotor, or a new HTS disc motor, with conventional copper windings at its two iron semi-stators, and a HTS disc as a rotor. The conventional induction motor's operation principle is related with the induced electromotive forces in the conductive rotor. Its behaviour, characteristics (namely their torque?speed characteristics for different number of pole pairs) and modelling through Steinmetz and others theories are well known. The operation principle of the motor with HTS rotor, however, is rather different and is related with vortices' dynamics and pinning characteristics; this is a much more complex process than induction, and its modelling is quite complicated. In this paper, the operation was simulated through finite-elements commercial software, whereas superconductivity was simulated by the E-J power law. The Electromechanical performances of both motors where computed and are presented and compared. Considerations about the systems overall efficiency, including cryogenics, are also discussed.
n/a

Evidence for a dual binding mode of dockerin modules to cohesins - Carvalho, Ana Luisa; Dias, Fernando M. V.; Nagy, Tibor; Prates, Jose A. M.; Proctor, Mark R.; Smith, Nicola; Bayer, Edward A.; Davies, Gideon J.; Ferreira, Luis M. A.; Romao, Maria J.; Fontes, Carlos M. G. A.; Gilbert, Harry J. (Proceedings of the National Academy of Sciences of the United States of America, 2007)
n/a
n/a

Fuel Cells as Clean Electrical Energy Sources - A. Rodrigues; Mário Neves; João Pina (XCLEEE - X Portuguese-Spanish Conference in Electrical Engineering, 2007)
n/a
n/a

Heterodimeric nitrate reductase (NapAB) from Cupriavidus necator H16: purification, crystallization and preliminary X-ray analysis - Coelho, Catarina; Gonzalez, Pablo J.; Trincao, Jose; Carvalho, Ana L.; Najmudin, Shabir; Hettman, Thomas; Dieckman, Stephan; Moura, Jose J. G.; Moura, Isabel; Romao, Maria J. (Acta Crystallographica Section F-Structural Biology and Crystallization Communications, 2007)
n/a
n/a

High Performance, Environment Friendly, Modular and Fault Tolerant Renewable Energy Microgrid - João Pina; C. Caracaleanu; A Gonçalves; Pedro Pereira; S Valtchev; Mário Neves; A. Rodrigues (12th International Energy Conference & Exhibition (ENERGEX2007), 2007)

High Performance, Environment Friendly, Modular and Fault Tolerant Renewable Energy Microgrid - João Pina; C. Caracaleanu; A Gonçalves; Pedro Pereira; S Valtchev; Mário Neves; A. Rodrigues (12th International Energy Conference & Exhibition (ENERGEX2007), 2007)
n/a
n/a

Influence of humidity on the electrical charging properties of cork agglomerates - Lanca MC; Wirges W; Neagu ER; Gerhard R; Marat-MendeS J (Journal of Non-Crystalline Solids, 2007)
Cork is a natural cellular and electrically insulating material which may have the capacity to store electric charges on or in its cell walls. Since natural cork has many voids, it is difficult to obtain uniform samples with the required dimensions. Therefore, a more uniform material, namely commercial cork agglomerate, usually used for floor and wall coverings, is employed in the present study. Since we know from our previous work that the electrical properties of cork are drastically affected by absorbed and adsorbed water, samples were protected by means of different polymer coatings (applied by spin-coating or soaking). Corona charging and isothermal charging and discharging currents were used to study the electrical trapping and detrapping capabilities of the samples. A comparison of the results leads to the conclusion that the most promising method for storing electric charges in this cellular material consists of drying and coating or soaking with a hydrophobic, electrically insulating polymer such as polytetraflouroethylene (Teflon (R)).
n/a

Magnetisation System and Thrust Force Measurement of an All Superconducting Linear Synchronous Motor - João Pina; Mário Neves; Alfredo Álvarez; Amadeu Rodrigues (X Portuguese-Spanish Congress in Electrical Engineering, 2007)
n/a
n/a

Pilhas de Combustível como Fonte Limpa de Energia Eléctrica - Amadeu Rodrigues; Mário Neves; João Pina (X Portuguese-Spanish Congress in Electrical Engineering, 2007)
n/a
n/a

Preparation of ingredients containing an ACE-inhibitory peptide by tryptic hydrolysis of whey protein concentrates - Ferreira, I.M.P.L.V.O.; Pinho, O.; Mota, M. V.; Tavares, P.; Pereira, A.; Goncalves, M. P.; Torres, D.; Rocha, C.; Teixeira, J. A. (International Dairy Journal, 2007)
This study describes the characterisation of whey protein hydrolysates obtained from tryptic hydrolysis to assess their application as ingredients with angiotensin-converting-enzyme (ACE) inhibitory action. The levels of a-lactalbumin (alpha-la) and P-lactoglobulin (beta-lg) remaining after hydrolysis were quantified. Peptides were separated by RP-HPLC, and Ala-Leu-Pro-Met-His-Ile-Arg (ALPMHIR), the most potent beta-lg-derived ACE-inhibitory peptide was monitored. A correlation curve was established for the production of this peptide as a function of hydrolysis time. Heat-induced gelation of hydrolysates was studied by small-deformation rheology. The gelation times and the strength of the final gels were highly dependent on the degree of hydrolysis. Smaller peptides liberated by hydrolysis contributed to the inability of whey protein hydrolysates to gel. (c) 2006 Elsevier Ltd. All rights reserved.
Times Cited: 20 Ferreira, I. M. P. L. V. O. Pinho, O. Mota, M. V. Tavares, P. Pereira, A. Goncalves, M. P. Torres, D. Rocha, C. Teixeira, J. A.

Single chip interdigitated electrode capacitive chemical sensor arrays - Kitsara, M.; Goustouridis, D.; Chatzandroulis, S.; Chatzichristidi, M.; Raptis, I.; Ganetsos, T.; Igreja, R.; Dias, C. J. (Sensors and Actuators B-Chemical, 2007)
n/a
Times Cited: 15 Kitsara, M. Goustouridis, D. Chatzandroulis, S. Chatzichristidi, M. Raptis, I. Ganetsos, Th. Igreja, R. Dias, C. J. 20th European Conference on Solid-State Transducers SEP 17-20, 2006 Goteborg, SWEDEN

Single chip interdigitated electrode capacitive chemical sensor arrays - Kitsara, M.; Goustouridis, D.; Chatzandroulis, S.; Chatzichristidi, M.; Raptis, I.; Ganetsos, T.; Igreja, R.; Dias, C. J. (Sensors and Actuators B-Chemical, 2007)
n/a
n/a

Single chip interdigitated electrode capacitive chemical sensor arrays - Kitsara, M.; Goustouridis, D.; Chatzandroulis, S.; Chatzichristidi, M.; Raptis, I.; Ganetsos, Th.; Igreja, R.; Dias, C. J. (Sensors and Actuators B-Chemical, 2007)
n/a
n/a

Study in the Design of HTS Machines: an All Superconducting Linear Synchronous Motor - João Pina; Mário Neves; Amadeu Rodrigues (POWERENG 2007 - International Conference on Power Engineering, Energy and Electrical Drives, 2007)
n/a
n/a

A test rig for thrust force measurements f an all HTS linear synchronous motor - João Pina; Pedro Pereira; S Valtchev; A Gonçalves; Mário Neves; A. Rodrigues (8th European Conference on Applied Superconductivity (EUCAS), 2007)
This paper presents the design of a test rig for an all HTS linear synchronous motor. Although this motor showed to have several unattractive characteristics, its design raised a number of problems which must be considered in future HTS machines design. HTS electromagnetic properties led to the development of new paradigms in electrical machines and power systems, as e. g. in some cases iron removal and consequent assembly of lighter devices. This is due to superconductor's ability to carry high currents with minimum losses and consequent generation in the surrounding air of flux densities much higher than the allowed by ferromagnetic saturation. However, severe restrictions in HTS power devices design that goes further beyond cryogenic considerations must be accounted in. This is usually the case when BSCCO tapes are used as conductors. Its bending limitations and the presence of flux components perpendicular to tape surface, due to the absence of iron, have to be considered for it may turn some possible applications not so attractive or even practically unfeasible. An all HTS linear synchronous motor built by BSCCO tapes as armature conductors and two trapped-flux YBCO bulks in the mover was constructed and thrust force measurements are starting to be performed. Although the device presents severe restrictions due to the exposed and other reasons, it allowed systematising its design. A pulsed-field magnetiser to generate opposite fluxes for both YBCO bulks is also detailed. Thrust force numerical predictions were already derived and presented.

A test rig for thrust force measurements f an all HTS linear synchronous motor - João Pina; Pedro Pereira; S Valtchev; A Gonçalves; Mário Neves; A. Rodrigues (8th European Conference on Applied Superconductivity (EUCAS), 2007)
This paper presents the design of a test rig for an all HTS linear synchronous motor. Although this motor showed to have several unattractive characteristics, its design raised a number of problems which must be considered in future HTS machines design. HTS electromagnetic properties led to the development of new paradigms in electrical machines and power systems, as e. g. in some cases iron removal and consequent assembly of lighter devices. This is due to superconductor's ability to carry high currents with minimum losses and consequent generation in the surrounding air of flux densities much higher than the allowed by ferromagnetic saturation. However, severe restrictions in HTS power devices design that goes further beyond cryogenic considerations must be accounted in. This is usually the case when BSCCO tapes are used as conductors. Its bending limitations and the presence of flux components perpendicular to tape surface, due to the absence of iron, have to be considered for it may turn some possible applications not so attractive or even practically unfeasible. An all HTS linear synchronous motor built by BSCCO tapes as armature conductors and two trapped-flux YBCO bulks in the mover was constructed and thrust force measurements are starting to be performed. Although the device presents severe restrictions due to the exposed and other reasons, it allowed systematising its design. A pulsed-field magnetiser to generate opposite fluxes for both YBCO bulks is also detailed. Thrust force numerical predictions were already derived and presented.
n/a

Topology of an Electrical Gearbox with Variable Poles for Induction and Superconducting Disc Motors - Inácio Steve; João Pina; Stanimir Valtchev; Mário Neves; Amadeu Rodrigues (X Portuguese-Spanish Congress in Electrical Engineering, 2007)

Topology of an Electrical Gearbox with Variable Poles for Induction and Superconducting Disc Motors - Inácio Steve; João Pina; Stanimir Valtchev; Mário Neves; Amadeu Rodrigues (X Portuguese-Spanish Congress in Electrical Engineering, 2007)
n/a
n/a

Ventricular Arrhythmias Assessment - Henriques, J.; P. Carvalho; Gil, P.; Marques, A.; Rocha, T.; Ribeiro, B.; Antunes, M.; Sal, R.; Habetha, J. (n/a, 2007)
n/a
n/a

{Preparation of acetazolamide composite microparticles by supercritical anti-solvent techniques} - Duarte, Ana Rita C; Roy, Christelle; Vega-González, Arlette; Duarte, Catarina M.M.; Subra-Paternault, Pascale (International Journal of Pharmaceutics, 2007)
The possibility of preparation of ophthalmic drug delivery systems using compressed anti-solvent technology was evaluated. Eudragit RS 100 and RL 100 were used as drug carriers, acetazolamide was the model drug processed. Compressed anti-solvent experiments were carried out as a semi-continuous or a batch operation from a liquid solution of polymer(s) + solute dissolved in acetone. Both techniques allowed the recovery of composite particles, but the semi-continuous operation yielded smaller and less aggregated populations than the batch operation. The release behaviour of acetazolamide from the prepared microparticles was studied and most products exhibited a slower release than the single drug. Moreover, the release could be controlled to some extent by varying the ratio of the two Eudragit used in the formulation and by selecting one or the other anti-solvent technique. Simple diffusion models satisfactorily described the release profiles. Composites specifically produced by semi-continuous technique have a drug release rate controlled by a diffusion mechanism, whereas for composites produced by the batch operation, the polymer swelling also contributes to the overall transport mechanism. © 2006 Elsevier B.V. All rights reserved.
n/a
Keywords: Acetazolamide; Drug delivery; Eudragit; GAS; SAS; Supercritical fluids

{Preparation of acetazolamide composite microparticles by supercritical anti-solvent techniques} - Duarte, Ana Rita C; Roy, Christelle; Vega-González, Arlette; Duarte, Catarina M.M.; Subra-Paternault, Pascale (International Journal of Pharmaceutics, 2007)
The possibility of preparation of ophthalmic drug delivery systems using compressed anti-solvent technology was evaluated. Eudragit RS 100 and RL 100 were used as drug carriers, acetazolamide was the model drug processed. Compressed anti-solvent experiments were carried out as a semi-continuous or a batch operation from a liquid solution of polymer(s) + solute dissolved in acetone. Both techniques allowed the recovery of composite particles, but the semi-continuous operation yielded smaller and less aggregated populations than the batch operation. The release behaviour of acetazolamide from the prepared microparticles was studied and most products exhibited a slower release than the single drug. Moreover, the release could be controlled to some extent by varying the ratio of the two Eudragit used in the formulation and by selecting one or the other anti-solvent technique. Simple diffusion models satisfactorily described the release profiles. Composites specifically produced by semi-continuous technique have a drug release rate controlled by a diffusion mechanism, whereas for composites produced by the batch operation, the polymer swelling also contributes to the overall transport mechanism. © 2006 Elsevier B.V. All rights reserved.
n/a
Keywords: Acetazolamide; Drug delivery; Eudragit; GAS; SAS; Supercritical fluids

Impedance study of the electrical properties of poly-Si thin film transistors - Pereira, L.; Raniero, L.; Barquinha, P.; Fortunato, E.; Martins, R. (Journal of Non-Crystalline Solids, 2006)
n/a
Times Cited: 221st International Conference on Amorphous and Nanocrystalline SemiconductorsSep 04-09, 2005Lisbon, PORTUGAL

{Characterization of nanocrystalline silicon carbide films} - Zhang, S.; Pereira, L.; Hu, Z.; Ranieiro, L.; Fortonato, E.; Ferreira, I.; Martins, R. (Journal of Non-Crystalline Solids, 2006)
n/a
n/a

{Impedance study of the electrical properties of poly-Si thin film transistors} - Pereira, L.; Raniero, L.; Barquinha, P.; Fortunato, E.; Martins, R. (Journal of Non-Crystalline Solids, 2006)
n/a
n/a

{Study of nanostructured silicon by hydrogen evolution and its application in p–i–n solar cells} - Raniero, L.; Ferreira, I.; Pereira, L.; Águas, H.; Fortunato, E.; Martins, R. (Journal of Non-Crystalline Solids, 2006)
n/a
n/a

Assessing construction interoperability using a MDA and SOA architecture from an e-business perspective - Grilo A; Jardim-Goncalves R; Steiger-Garcao A (eWork and eBusiness in Architecture, Engineering and Construction, 2006)
n/a
n/a

Challenging the interoperability industry with MDA between computers in and SOA - Jardim-Goncalves R; Grilo A; Steiger-Garcao A (COMPUTERS IN INDUSTRY, 2006)
n/a
n/a

Novel multilayer coatings on polyethylene for acetabular devices - Santos V; Borges JP; Ranito CMS; Pires E; Araujo H; Marques A; Tomas L; Fortunato E; Martins R; Nunes Y (Advanced Materials Forum Iii, Pts 1 and 2, 2006)
n/a
n/a

Synthesis, solid-state structures, and EPR spectroscopic studies on polycrystalline and single-crystal samples of alpha-diimine cobalt(II) complexes - Rosa, V.; Gonzalez, P. J.; Aviles, T.; Gomes, P. T.; Welter, R.; Rizzi, A. C.; Passeggi, M. C. G.; Brondino, CD (European Journal of Inorganic Chemistry, 2006)
Cobalt compounds of the general formula [COX2(alpha-diimine)], where X = Cl or I and the alpha-diimines are 1,4-diaryl-2,3-dimethyl-1,4-diaza-1,3-butadiene (Ar-DAB) and bis(aryl)acenaphthenequinonediimine (Ar-BIAN) were synthesized by the direct reaction of the anhydrous cobalt salts CoCl2 or CoI2 and the corresponding alpha-diinline ligand in dried CH2Cl2. The synthesized compounds are [Co(Ph-DAB)Cl-2] (1a), [Co(o,o',p-Me3C6H2-DAB)Cl-2] (1b), and [Co(o,o'iPr(2)C(6)H(3)-DAB)Cl-2] (1c) with the ligands Ar-DAB, and also [Co(o,o',p-Me3C6H2-BIAN)I-2] (2'b) with the ligand Ar-BIAN. The crystal structures of all the compounds were solved by single-crystal X-ray diffraction. In all cases the cobalt atom is in a distorted tetrahedron, which is built up of two halide atoms and two nitrogen atoms of the alpha-dimune ligand. X-band EPR measurements of polycrystalline samples performed on compounds 1b, 1c, and 2'b indicate a high-spin Col, ion (S = 3/2) in an axially distorted environment. Single-crystal EPR experiments on compounds 1b and 1c allowed us to evaluate the orientation of the g tensor in the molecular frame. (c) Wiley-VCH Verlag GmbH & Co.
120IETimes Cited:4Cited References Count:56
Keywords: alpha-diimine ligands; bian ligands; cobalt(ii) complexes; coordination strength; electron-paramagnetic-resonance; epr spectroscopy; esr-spectra; ethylene; ground-state; high-spin cobalt(ii); magnetic-properties; metal; nitrogen ligands; single-crystal x-ray diffraction

Acoustic determination of thermophysical properties and critical parameters for R410A and critical line of xCO2 + (1 - X)R410A - Ribeiro, N.; Costa, T.; Aguiar-Ricardo, A.; Esperança, J.M.S.S.; Pires, P.F.; Guedes, H.J.R. (Journal of Chemical and Engineering Data, 2006)
n/a
Cited By (since 1996):3Export Date: 19 November 2013Source: Scopus

Acoustic determination of thermophysical properties and critical parameters for the mixture (51 wt % R143a + 49 wt % R125) and critical line of xCO 2 + (1 - X)(51 wt % R143a + 49 wt % R125) - Esperança, J.M.S.S.; Pires, P.F.; Guedes, H.J.R.; Ribeiro, N.; Costa, T.; Aguiar-Ricardo, A. (Journal of Chemical and Engineering Data, 2006)
n/a
Cited By (since 1996):2Export Date: 19 November 2013Source: Scopus

Can the speed of sound be used for detecting critical states of fluid mixtures? - Reis, J.C.R.; Ribeiro, N.; Aguiar-Ricardo, A. (Journal of Physical Chemistry B, 2006)
n/a
Cited By (since 1996):6Export Date: 19 November 2013Source: Scopus

Construction of a low-cost apparatus for gas adsorption on solids - Macedo, H.; Ricardo, A. A.; Sotomayor, J. (Journal of Chemical Education, 2006)
n/a
Export Date: 19 November 2013Source: Scopus

Visual and acoustic investigation of the critical behavior of mixtures of CO2 with a perfluorinated polyether - Aguiar-Ricardo, A.; Casimiro, T.; Costa, T.; Leandro, J.; Ribeiro, N. (Fluid Phase Equilibria, 2006)
n/a
Cited By (since 1996):4Export Date: 19 November 2013Source: Scopus

Synthesis, solid-state structures, and EPR spectroscopic studies on polycrystalline and single-crystal samples of α-diimine cobalt(II) complexes - Rosa, V.; Gonzalez, P. J.; Avilés, T.; Gomes, P. T.; Welter, R.; Rizzi, A. C.; Passeggi, M. C. G.; Brondino, CD (European Journal of Inorganic Chemistry, 2006)
n/a
Cited By :24Export Date: 17 June 2020

Thermal cycling treatment and structural changes in Cu-Al-Ni monocrystalline alloys - Silva, RJ; Matlakhova, L.A.; Pereira, E.C.; Matlakhov, A.N.; Monteiro, S.N.; Rodríguez, R.J.S. (Materials Science Forum, 2006)
n/a
ORCID Reference type: [bibtex]; ORCID Reference: [@article { cordeirosilva2006,title = {Thermal cycling treatment and structural changes in Cu-Al-Ni monocrystalline alloys},journal = Materials Science Forum,year = {2006},volume = {514-516},number = PART 1,pages = {692-696},author = {Silva, R.J. and Matlakhova, L.A. and Pereira, E.C. and Matlakhov, A.N. and Monteiro, S.N. and Rodríguez, R.J.S.}}]

Discovering Early Aspects - E. Baniassad,; P. Clements; J. Araújo,; A. Moreira; A. Rashid; B. Tekinerdogan (IEEE Software, 2006)
n/a
URL={http://http://portal.acm.org/citation.cfm?id=1110641.1110731&coll=GUIDE&dl=GUIDE}

An Approach to Instantiate Metrics to Measure Aspect-oriented Requirements Documents - R. Ramos,; J. Araújo,; J. F. B. Castro; A. Moreira; F. Alencar; C. Silva (Workshop on AOSD, WASP'06, 20th Brasilian Symposium on Software Engineering (SBES'06), 2006)
n/a
n/a

Comparative analysis of numerical methods for a nonlinear Volterra integral equation - Diogo, T.; Lima, P.; M. Rebelo (Proceedings of Hercma, 2006)

Direction perception of a translational point-light-walker - Y. Rybarczyk; Santos J. (1º Encontro da Associação Portuguesa de Psicologia Experimental., 2006)

EEG signal pre-processing for segmentation into significant regions, major artefacts removal, and uncertainty reduction in epileptic seizure characterization - Bigan, C; Besleaga; M; Zervakis,M; Michalopoulos, K; Woolfson, M; Ortigueira, M.; Batista, A; Rato, R; Righi, M; Barcaro, U; Starita, A; Camilleri, Kenneth P; et al. (BIOPATTERN Brain, 2006)

A Model to Evaluate Aspect-Oriented Requirements Documents - R. Ramos,; J. Araújo,; A. Moreira; J. F. B. Castro; F. Alencar; C. Silva (4th Iberian Workshop on Aspect Oriented Software Development (DSOA 2006),, 2006)
n/a
n/a

Modeling and Composing Navigational Concerns in Web Applications: Requirement and Design Issues - S. Gordillo,; G. Rossi; A. Moreira; J. Araújo,; C. Vairetti; M. Urbieta (Fourth Latin American Web Congress (LA-WEB'06), 2006)
n/a
n/a

Modeling Multi-Agent Systems using UML - C. Silva,; J. Araújo,; A. Moreira; J. F. B. Castro; F. Alencar; R. Ramos (20th Brazilian Symposium on Software Engineering (SBES), 2006)
n/a
n/a

Motion integration in direction perception of biological motion - Y. Rybarczyk; Santos J. (4th Asian Conference on Vision, 2006)

Numerical solution of a nonlinear Abel type Volterra integral equation - Diogo, T.; Lima, P.; M. Rebelo (Communications on Pure and Applied Analysis, 2006)

Organizational Architectural Styles Specification - C. Silva,; J. Araújo,; A. Moreira; J. F. B. Castro; F. Alencar; R. Ramos (JISBD 2006, 2006)
n/a
n/a

Phylogenetic lineages in the Botryosphaeriaceae - Crous, PW; Slippers, B; WINGFIELD, MJ; Rheeder, J; Marasas, WFO; Philips, AJL; Alves, A; Burgess, T.; Barber, P; Groenewald, JZ (Studies in Mycology, 2006)
n/a
n/a

Resistência ao Punçoamento de Lajes Fungiformes Pré-Esforçadas - Método Alternativo de Cálculo - António Ramos; Válter Lúcio (Revista Internacional Construlink, 2006)
n/a
n/a

Safety on Punching of Prestressed Flat Slabs - António Ramos; Lúcio,Valter (fib congress 2006, 2006)
n/a
n/a

Separation and Modularization of Design Patterns-Specific Concerns in Detailed Architectural Design - C. Silva,; J. F. B. Castro; J. Araújo,; A. Moreira; F. Alencar; R. Ramos (CAiSE'06 Forum, 18th Conference on Advanced Information Systems Engineering (CAiSE 2006),, 2006)
n/a
n/a

Size and Relative Stiffness Effects on Compressive Failure of Concrete Columns Wrapped with Glass FRP - Silva, M. A. G.; C. C. Rodrigues (Journal of Materials in Civil Engineering, 2006)
Structural design relies essentially on tests made on cylinders of small size to estimate the probability of failure of prototype members, since full-scale testing of structures to determine their strength is not feasible. The confidence that such scale modeling deserves in terms of representation of actual behavior needs careful examination, due to such factors as material nonlinearities, difficulties of scale representation of particulate materials, and sometimes the impossibility of simultaneously satisfying independent dimensionless parameters. Some failures explained by linear fracture mechanics are associable with strong size effects, as opposed to the cases where small cracks are a material property. Besides research centered on these problems, a number of studies of scale effects have been associated with the increased probability of finding a flaw in larger objects. In fact, geometric similitude may coexist with microscopic randomness of flaws that cause size effects to appear. The type of material of the object under study may also be a decisive factor. For example, scatter of the mechanical properties in unidirectional fiber-reinforced polymers (FRPs) is much larger than in metals due to a larger density of flaws. Thus the strength of FRP laminates may depend on the volume of material involved. Strengthening reinforced concrete columns with FRP wraps leads to new constitutive laws for the overall response of the columns and requires small-scale testing followed by extrapolation for design use. The present paper focuses on the difficulties of this step, based on the experimental data obtained. The questions mentioned above are addressed, and the relevance of the adequate representation of the lateral stiffness of the FRP jacket in the scaled cylinders is emphasized. The paper also addresses the problem of testing confined cylinders with a given slenderness ratio H/D=height/diameter, within the range usually characteristic of short columns, and extrapolating the results for columns of different H/D. The importance of the parameter (thickness of jacket/diameter of column, representative of stiffness of jacket/stiffness of concrete core) is also examined. The influence of the parameter is shown to be relatively minor, whereas the nonscaling of the relative stiffness of the core and jacket would be a major cause of error. The experimental data, in terms of strain and strength, are also compared with numerical models proposed in the literature, and the quality of the approximations is analyzed.

A Systematic Analysis Patterns Specification - R. Raminhos,; M. Pantoquilho; J. Araújo,; A. Moreira (International Conference on Enterprise Information Systems (ICEIS), 2006)
n/a
n/a

Using the Problem Domain Language to Specify Navigational Concerns in Web Applications - L. Antonelli,; S. Gordillo; G. Rossi; J. Araújo,; A. Moreira (IX Workshop on Requirements Engineering (WER), 2006)
n/a
n/a

Changes in molecular dynamics upon formation of a polymer dispersed liquid crystal - Bras, Ana R. E.; Viciosa, M. Teresa; Rodrigues, Carla M.; Dias, C. J.; Dionisio, Madalena (Physical Review E, 2006)
n/a
n/a

Characterization of nanocrystalline silicon carbide films - Zhang, S.; Pereira, L.; Hu, Z.; Ranieiro, L.; Fortonato, E.; Ferreira, I.; Martins, R. (Journal of non-crystalline solids, 2006)
n/a
n/a

Design of a Linear Synchronous Motor With High Temperature Superconductor Materials in the Armature and in the Field Excitation System - João Pina; Mário Neves; M. McCulloch; Amadeu Rodrigues (Journal of Physics: Conference Series, 2006)
n/a
n/a

Electrical properties of amorphous and nanocrystalline hydrogenated silicon films obtained by impedance spectroscopy - Ferreira, I.; Raniero, L.; Fortunato, E.; Martins, R. (Thin solid films, 2006)
n/a
n/a

The first crystal structure of class III superoxide reductase from Treponema pallidum - Santos-Silva, T; Trincao, J; Carvalho, AL; Bonifacio, C.; Auchere, F; Raleiras, P; Moura, I; Moura, JJG; Romao, MJ (Journal of Biological Inorganic Chemistry, 2006)
n/a
n/a

The first crystal structure of class III superoxide reductase from Treponema pallidum - Santos-Silva, T; Trincão, J.; Carvalho, AL; Bonifácio, C.; Auchère, F.; Raleiras, P; Moura, I; Moura, JJG; Romão, MJ (Journal of Biological Inorganic Chemistry, 2006)
n/a
n/a

Hydrogenated silicon carbon nitride films obtained by HWCVD, PA-HWCVD and PECVD techniques - Ferreira, I.; Fortunato, E.; Vilarinho, P.; Viana, A. S.; Ramos, A.R.; E. Alves; Martins, R. (Journal of non-crystalline solids, 2006)
n/a
n/a

Insights on amorphous silicon nip and MIS 3D position sensitive detectors - Soares, Fernanda; Marques, António; Ferreira, Isabel; Martins, Rodrigo; Águas, Hugo; Fortunato, Elvira; Borges, PMR; Costa, Daniel; Pereira, Sergio; Raniero, Leandro (Materials science forum, 2006)
n/a
n/a

Insights on amorphous silicon nip and MIS 3D position sensitive detectors - Martins, Rodrigo; Costa, Daniel; Águas, Hugo; Soares, Fernanda; Marques, António; Ferreira, Isabel; Borges, PMR; Pereira, Sergio; Raniero, Leandro; Fortunato, Elvira (Materials science forum, 2006)
n/a
n/a

Investigation of a-Si: H 1D MIS position sensitive detectors for application in 3D sensors - Aguas, H.; Pereira, L.; Raniero, L.; Costa, D; Fortunato, E.; Martins, R. (Journal of non-crystalline solids, 2006)
n/a
n/a

Multifunctional thin film zinc oxide semiconductors: Application to electronic devices - Pereira, LuÍs; Marques, António; Ferreira, Isabel; Martins, Rodrigo; Águas, Hugo; Barquinha, Pedro; Fortunato, Elvira; Pimentel, Ana; Gonçalves, Alexandra; Raniero, Leandro (Materials science forum, 2006)
n/a
n/a

Multifunctional thin film zinc oxide semiconductors: Application to electronic devices - Fortunato, E.; Goncalves, A.; Marques, A.; Pimentel, A.; Barquinha, P.; Aguas, H.; Pereira, L.; Raniero, L.; GONCALVES, G; Ferreira, I.; Martins, R. (Advanced Materials Forum Iii, Pts 1 and 2, 2006)
n/a
Times Cited: 73rd International Materials Symposium/12th Meeting of the Sociedad-Portuguesa-da-Materials (Materials 2005/SPM)Mar 20-23, 2005Univ Aveiro, Aveiro, PORTUGALPortuguese Mat Soc; Mat Network Atlantic Arc; CiCECO; BPI; Bayer Mat Sci; DURIT; IZASA; GIC; Novagres; Rauschert; CRIOLAB CRYOGENICS Vacuum Syst Vacuum Chambers; FCT; NTI EUROPE; Fdn Calouste Gulbenkian; ScienTec; ThermoLab; Papelave; cienciapt net; Air Liquide

Multifunctional thin film zinc oxide semiconductors: Application to electronic devices - Fortunato, Elvira; Gonçalves, Alexandra; Marques, António; Pimentel, Ana; Barquinha, Pedro; Águas, Hugo; Pereira, Lu{\'ıs; Raniero, Leandro; Gonçalves, Gonçalo; Ferreira, Isabel; others (Materials science forum, 2006)
n/a
n/a

PART 1-I-Electronic, Magnetic and Photonic Materials-Insights on Amorphous Silicon Nip and MIS 3D Position Sensitive Detectors - Martins, R.; Costa, D; Aguas, H.; Soares, F; Marques, A.; Ferreira, I.; Borges, PMR; Pereira, S.; Raniero, L.; Fortunato, E. (Materials Science Forum, 2006)
n/a
n/a

PART 1-I-Electronic, Magnetic and Photonic Materials-Multifunctional Thin Film Zinc Oxide Semiconductors: Application to Electronic Devices - Fortunato, E.; Gonc@ 4alves, A; Marques, A.; Pimentel, A.; Barquinha, P.; Aguas, H.; Pereira, L.; Raniero, L.; GONCALVES, G; Ferreira, I. (Materials Science Forum, 2006)
n/a
n/a

PART 1-I-Electronic, Magnetic and Photonic Materials-Multifunctional Thin Film Zinc Oxide Semiconductors: Application to Electronic Devices - Fortunato, E.; Gonc@ 4alves, A; Marques, A.; Pimentel, A.; Barquinha, P.; Aguas, H.; Pereira, L.; Raniero, L.; GONCALVES, G; Ferreira, I.; others (Materials Science Forum, 2006)
n/a
n/a

PART 1-I-Electronic, Magnetic and Photonic Materials-Role of Hydrogen Plasma on the Electrical and Optical Properties of Indium Zinc Transparent Conductive Oxide - Raniero, L.; Goncalves, A.; Pimentel, A.; Zhang, S.; Ferreira, I.; Vilarinho, P. M.; Fortunato, E.; Martins, R. (Materials Science Forum, 2006)
n/a
n/a

PART 1-I-Electronic, Magnetic and Photonic Materials-The Study of High Temperature Annealing of a-SiC: H Films - Zhang, S.; Hu, Z.; Raniero, L.; Liao, X; Ferreira, I.; Fortunato, E.; Vilarinho, P. M.; Pereira, L.; Martins, R. (Materials Science Forum, 2006)
n/a
n/a

Performance of an air based radiative cooling system - Aelenei, Daniel; Roriz, Luis (HB 2006 - Healthy Buildings, 2006)
n/a
n/a

Performances of an in-line PECVD system used to produce amorphous and nanocrystalline silicon solar cells - N. Martins; Canhola, P.; Quintela, M; Ferreira, I.; Raniero, L.; Fortunato, E.; Martins, R. (Thin solid films, 2006)
n/a
n/a

Relativistic correlation correction to the binding energies of the ground configuration of beryllium-like, neon-like, magnesium-like and argon-like ions - J P Santos; G. C. Rodrigues; J. P. Marques; F. Parente; J. P. Desclaux; P. Indelicato (The European Physical Journal D, 2006)
Total electronic correlation corrections to the binding energies of the isoelectronic series of beryllium, neon, magnesium and argon, are calculated in the framework of relativistic multiconfiguration Dirac-Fock method. Convergence of the correlation energies is studied as the active set of orbitals is increased. The Breit interaction is treated fully self-consistently. The final results can be used in the accurately determination of atomic masses from highly charged ions data obtained in Penning-trap experiments.
DOI: 10.1140/epjd/e2006-00002-x PACS 31.30.Jv - Relativistic and quantum electrodynamic effects in atoms and molecules. 31.25.Eb - Electron correlation calculations for atoms and ions: ground state.

Relativistic correlation correction to the binding energies of the ground configuration of beryllium-like, neon-like, magnesium-like and argon-like ions - J P Santos; G. C. Rodrigues; J. P. Marques; F. Parente; J. P. Desclaux; P. Indelicato (The European Physical Journal D, 2006)
Total electronic correlation corrections to the binding energies of the isoelectronic series of beryllium, neon, magnesium and argon, are calculated in the framework of relativistic multiconfiguration Dirac-Fock method. Convergence of the correlation energies is studied as the active set of orbitals is increased. The Breit interaction is treated fully self-consistently. The final results can be used in the accurately determination of atomic masses from highly charged ions data obtained in Penning-trap experiments.
DOI: 10.1140/epjd/e2006-00002-xPACS31.30.Jv - Relativistic and quantum electrodynamic effects in atoms and molecules.31.25.Eb - Electron correlation calculations for atoms and ions: ground state. JPS-Ref28

Role of hydrogen plasma on electrical and optical properties of ZGO, ITO and IZO transparent and conductive coatings - Raniero, L.; Ferreira, I.; Pimentel, A.; Goncalves, A.; Canhola, P.; Fortunato, E.; Martins, R. (Thin Solid Films, 2006)
n/a
n/a

Role of hydrogen plasma on electrical and optical properties of ZGO, ITO and IZO transparent and conductive coatings - Raniero, L., Ferreira, I., Pimentel, A., Gonçalves, A., Canhola, P., Fortunato, E., Martins, R. (Thin Solid Films, 2006)
In this paper we study the electro-optical behaviour and the structure of different TCOs, namely the ZGO, ITO and IZO films before and after being submitted to different hydrogen plasma power densities, for times up to 60 s, aiming their use in a/nc-Si:H solar cells. The results achieved show that ZGO films do not reduce for all plasma conditions used and so, the solar cells produced evidence high current density, about 17% larger that the one recorded in the other TCOs. Besides that, by combining the electrical and optical characteristics of the films through a figure of merit, the data reveal that for the ITO and IZO films even when exposed to very low hydrogen power plasma, the figure of merit is reduced up to 50%. © 2005 Elsevier B.V. All rights reserved.
cited By 65

Role of hydrogen plasma on the electrical and optical properties of indium zinc transparent conductive oxide - Ferreira, Isabel; Martins, Rodrigo; Vilarinho, Paula M; Fortunato, Elvira; Pimentel, Ana; Gonçalves, Alexandra; Raniero, Leandro; Zhang, Shibin (Materials science forum, 2006)
n/a
n/a

Role of hydrogen plasma on the electrical and optical properties of indium zinc transparent conductive oxide - Raniero, L.a , Gonçalves, A.a , Pimentel, A.a , Zhang, S.a , Ferreira, I.a , Vilarinho, P.M.b , Fortunato, E.a , Martins, R.a (Materials Science Forum, 2006)
In this work we studied the influence of the power density of hydrogen plasma on electrical and optical properties (Hall mobility, free carrier concentration, sheet resistance, optical transmittance and a.c. impedance) of indium zinc oxide films, aiming to determine their chemical stability. This is an important factor for the optimization of amorphous/nanocrystalline p-i-n hydrogenated silicon (a/nc-Si:H) solar cells, since they should remain chemically highly stable during the p layer deposition. To perform this work the transparent conductive oxide was exposed to hydrogen plasma at substrate temperature of 473 K, 87 Pa of pressure and 20 seem of hydrogen flow. The results achieved show that IZO films were reduced for all plasma conditions used, which leads mainly to a decrease on films transmittance. For the lowest power density used in the first minute of plasma exposition the transmittance of the IZO films decreases about 29%.
cited By 1

Role of the Oxide Layer on the Performances of a-Si: H Schottky Structures Applied to PDS Fabrication - Aguas, Hugo; Pereira, Luis; Costa, Daniel; Raniero, Leandro; Fortunato, Elvira; Martins, Rodrigo (MRS Proceedings, 2006)
n/a
n/a

Silicon thin films prepared in the transition region and their use in solar cells - Zhang, S.; Liao, X; Raniero, L.; Fortunato, E.; Xu, Y; Kong, G; Aguas, H.; Ferreira, I.; Martins, R. (Solar energy materials and solar cells, 2006)
n/a
n/a

Silicon thin films prepared in the transition region and their use in solar cells - Zhang, S.; Liao, X; Raniero, L.; Fortunato, E.; Xu, Y; Kong, G; Aguas, H.; Ferreira, I.; Martins, R. (Solar energy materials and solar cells, 2006)
n/a
n/a

The study of high temperature annealing of a-SiC: H films - Pereira, LuÍs; Ferreira, Isabel; Martins, Rodrigo; Vilarinho, Paula M; Fortunato, Elvira; Raniero, Leandro; Zhang, Shibin; Liao, X; Hu, Z. (Materials science forum, 2006)
n/a
n/a

Study of nanostructured silicon by hydrogen evolution and its application in p-i-n solar cells - Raniero, L., Ferreira, I., Pereira, L., Águas, H., Fortunato, E., Martins, R. (Journal of Non-Crystalline Solids, 2006)
Nanostructured silicon films were deposited on the amorphous to microcrystalline transition region by plasma enhanced chemical vapor deposition, using an rf frequency of 27.12 MHz. Micro-Raman spectroscopy data show that in the transition region the peaks typically associated with amorphous silicon are slightly shifted towards higher wavenumber and become narrow, which could be explained by the short range order improvement or by the incorporation of very small Si nanocrystallites. The hydrogen evolution spectra from samples deposited in this region show two peaks, one at low temperature (LT) and the other at high temperature (HT), around 698 K and 840 K, respectively. These peaks represent activation energies of 87 (LT) and 135 (HT) kJ/mol, respectively, as deduced from the so-called Kissinger's method. The solar cells fabricated using i-layers produced in this transition region show good performances, with current density = 14.96 mA/cm2, short circuit voltage = 0.95 V, and fill factor = 0.67, which leads to efficiencies of 9.52%. © 2006 Elsevier B.V. All rights reserved.
cited By 14

Study of nanostructured silicon by hydrogen evolution and its application in p–i–n solar cells - Raniero, L.; Ferreira, I.; Pereira, L.; Águas, H.; Fortunato, E.; Martins, R. (Journal of non-crystalline solids, 2006)
n/a
n/a

Study of nanostructured silicon by hydrogen evolution and its application in p–i–n solar cells - Raniero, L.; Ferreira, I.; Pereira, L.; Águas, H.; Fortunato, E.; Martins, R. (Journal of non-crystalline solids, 2006)
n/a
n/a

Study of nanostructured/amorphous silicon solar cell by impedance spectroscopy technique - Raniero, L.; Fortunato, E.; Ferreira, I.; Martins, R. (Journal of non-crystalline solids, 2006)
n/a
n/a

Study of nanostructured/amorphous silicon solar cell by impedance spectroscopy technique - Raniero, L., Fortunato, E., Ferreira, I., Martins, R. (Journal of Non-Crystalline Solids, 2006)
This work deals with the study of nanostructured/amorphous silicon solar cell deposited by plasma enhanced chemical vapor deposition at 27.12 MHz by impedance spectroscopy. The solar cell studied present fill factor of 0.67, open circuit voltage of 0.94 V and short-circuit current density of 14.48 mA/cm2, which leads to the efficiency of 9.12%. The impedance spectroscopy analysis was performed under dark and illumination conditions. The data obtained were used to define an electrical equivalent circuit model able to explain the role of the different solar cell components, including the interfaces, on the solar cell performance. © 2006 Elsevier B.V. All rights reserved.
cited By 18

Xyloglucan is recognized by carbohydrate-binding modules that interact with beta-glucan chains - Najmudin, S.; Guerreiro, CIPD; Carvalho, AL; Prates, JAM; Correia, MAS; Alves, V. D.; Ferreira, LMA; Romao, MJ; Gilbert, HJ; Bolam, DN; Fontes, CMGA (Journal of Biological Chemistry, 2006)
n/a
n/a

{Characterisation of metal / mould interface on investment casting of c-TiAl} - Barbosa, J; Puga, H; Ribeiro, C S; O. M. N. D. Teodoro; Monteiro, A C (International journal of cast metals research, 2006)
This paper describes the evaluation of different refractory compounds – SiO2, ZrO2 and Y2O3 –as face coats of investment casting shells for c-TiAl. The effect of the different refractories on the metal–mould interaction is studied in different aspects. Experimental results include characterisation of the constituents present at the metal/ mould interface, the segregation profiles of residual elements, namely oxygen, from the interface to the inner part of the samples, the extension and microhardness of the samples external hard case and the samples surface finishing.
n/a
Keywords: ceramic crucible; ceramic mould; Graphite; investment casting; silica; tial; yttria; zirconia

Design of a Linear Synchronous Motor With High Temperature Superconductor Materials in the Armature and in the Field Excitation System - João Pina; Mário Neves; M. McCulloch; Amadeu Rodrigues (European Conference on Applied Superconductivity, EUCAS?05, 2005)
n/a
n/a

The behaviour of RC columns retrofitted with FRP or polymeric concrete under axial compression and cyclic horizontal loads - Chastre Rodrigues, C.; Silva, M. A. G. (9th International Conference on Inspection, Appraisal, Repairs and Maintenance of Structures, 2005)
The seismic retrofit of reinforced concrete columns with FRP jackets has received a considerable increment in recent years due the high strength-weight and stiffness-weight ratios of FRP compared to other materials. The FRP outer shell also contributes to prevent or delay environmental degradation of the concrete and corrosion of the steel reinforcement. An experimental program conducted in order to analyze the behavior of reinforced concrete columns jacketed with FRP composites or repaired with polymeric concrete and subjected to axial compression and cyclic horizontal loads is described. The dimensions of the cylindrical columns were 1500 mm height by 250 mm diameter. The influence of various parameters on the response, including the type of confining material and the number of FRP layers, is reported. The results of the tests are shown and interpreted.
ISI Document Delivery No.: BFC72Times Cited: 0Cited Reference Count: 9Rodrigues, C. Chastre Silva, Manuel A. G.
Keywords: CFRP; Concrete; GFRP; polymeric; reinforced concrete columns; Retrofitting

Analysing the Development of e-Platforms in the AEC Sector - Grilo Antonio; Jardim-Goncalves Ricardo (2005)
n/a
n/a

Holotomographic analysis of the SiC reinforcement distribution in an Al matrix functionally graded composite fabricated by centrifugal casting - Fernandes, F.M. Braz; Luis Augusto Rocha; Velhinho, Alexandre (2005)
n/a
n/a

Synthesis of highly cross-linked poly(diethylene glycol dimethacrylate) microparticles in supercritical carbon dioxide - Casimiro, T.; Banet-Osuna, A.M.; Ramos, A. M.; da Ponte, M. N.; Aguiar-Ricardo, A. (European Polymer Journal, 2005)
n/a
Cited By (since 1996):25Export Date: 19 November 2013Source: Scopus

A Concern-Oriented Requirements Engineering Model - A. Moreira,; J. Araújo,; A. Rashid (17th Conference on Advanced Information Systems Engineering, 2005)
n/a
URL={http://http://www.informatik.uni-trier.de/ ley/db/conf/caise/caise2005.html#MoreiraAR05}

Early Aspects: The Current Landscape - J. Araújo,; E. Baniassad; P. Clements; A. Moreira; A. Rashid; B. Tekinerdogan (Carnegie Mellon University, 2005)
n/a
n/a

Multi-Dimensional Separation of Concerns in Requirements Engineering - A. Moreira,; A. Rashid; J. Araújo, (13th IEEE International Requirements Engineering Conference, 2005)
n/a
URL={http://http://csdl2.computer.org/persagen/DLAbsToc.jsp?resourcePath=/dl/proceedings/&toc=comp/procee}

A new dihydroxysterol from the marine phytoplankton Diacronema sp. (Haptophyta) - A. P. Rauter; M. M. Filipe; C. Prata; Noronha, J. P.; M. A. Sampayo; J. Justino; J. Bermejo (Fitoterapia, 2005)

A Novel Pentacyclic Triterpene from Leontodon filii - Zélia Tostão; João P. Noronha; Cabrita, Eurico J.; Jorge Medeiros; Justino, Jorge; Bermejo, Jaime; Amélia P. Rauter (Fitoterapia, 2005)

Towards an Aspect-Oriented Agile Requirements Approach - J. Araújo,; J. Ribeiro (International Workshop on Principles of Software Evolution (IWPSE 2005), ESEC 05, 2005)
n/a
n/a

Amorphous silicon based piin structure for color sensor - Zhang, S.; Raniero, L.; Fortunato, E.; Pereira, L.; Aguas, H.; Ferreira, I.; Martins, R. (MRS Proceedings, 2005)
n/a
n/a

Amorphous silicon based piin structure for color sensor - Zhang, S.; Raniero, L.; Fortunato, E.; Pereira, L.; Aguas, H.; Ferreira, I.; Martins, R. (MRS Proceedings, 2005)
n/a
n/a

Amorphous silicon-based PINIP structure for color sensor - Zhang, S.; Raniero, L.; Fortunato, E.; Ferreira, I.; Águas, H.; Martins, R. (Thin solid films, 2005)
n/a
n/a

Amorphous silicon-based PINIP structure for color sensor - Zhang, S.; Raniero, L.; Fortunato, E.; Ferreira, I.; Águas, H.; Martins, R. (Thin solid films, 2005)
n/a
n/a

Análise de Riscos numa Empresa do Sector Metalomecânico. [Risk Analysis in a Metalomecanic Company] - Isabel L. Nunes; Pedro Santos; José Henriques; Carlos Ruas (Análise e Gestão de Riscos, Segurança e Fiabilidade. Proceedings I Encontro Nacional de Riscos, Segurança e Fiabilidade, 2005)
n/a
n/a

Análise de Riscos numa Empresa do Sector Metalomecânico. [Risk Analysis in a Metalomecanic Company] - Isabel L. Nunes; Pedro Santos; José Henriques; Carlos Ruas (Análise e Gestão de Riscos, Segurança e Fiabilidade. Proceedings I Encontro Nacional de Riscos, Segurança e Fiabilidade, 2005)
n/a
n/a

Anchoring properties of a nematic liquid crystal on anisotropic hydroxypropylcellulose films - Fonseca, JG; Godinho, M. H.; Ribeiro, AC (Liquid crystals, 2005)
n/a
n/a

Biochemical characterization of plasma in amyotrophic lateral sclerosis: Amino acid and protein composition - Palma, A.; De Carvalho, M; Barata, N; Evangelista, T; Chicau, P.; REGALLA, M; Costa, J. (Amyotrophic Lateral Sclerosis and Other Motor Neuron Disorders, 2005)
n/a
n/a