Estudo do processo de reorientac��o do campo do director por ac����o de um campo magn��tico numa fase nem��tica confinada

Estudamos teoricamente as transi ����es de Fr ��edericksz nas geometrias interm ��dias entre: (i) afunilamento e tor ����o (ii) tor ����o e flex��o; e (iii) fex��o e afunilamento. Foram determinadas as condi ����es em que a transi ����o entre o estado n��o deformado e o estado homogeneamente deformado (transi ����o de Fr ��edericksz usual) e substitu��da pela transi ����o entre o estado n��o deformado e o estado deformado com estrutura peri ��dica. Tamb ��m estudamos te ��rica e experimentalmente a din��mica de reorienta ����o do campo do director ap os rota ����o s ubita da amostra num campo magn ��tico uniforme. Consideramos monodom�� nios de cristais l ��quidos nem ��ticos uniaxiais n��o quirais diamagn��ticos de baixo peso molecular, contidos entre duas fronteiras planas uniformes paralelas e r ��gidas com alinhamento planar. Simulamos e reproduzimos, na geometria de tor ����o toda a evolu ����o do campo do director desde o momento em que se imp��e uma rota ����o s ��bita e at �� ao instante em que se observa a forma ����o de bandas.

Foresight methodologies to understand changes in the labour process. Experience from Portugal

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

Risk management of new product development process

Dissertation submitted to Faculdade de Ci��ncias e Tecnologia of Universidade Nova de Lisboa for the achievement of Integrated Master��s degree in Industrial Management Engineering

A green integrated process for biodiesel production

Dissertation presented at Faculdade de Ci��ncias e Tecnologia from Universidade Nova de Lisboa to obtain the degree of Master in Chemical and Biochemical Engineering

Land use/ land cover change and its impact on soil erosion process in Begnas Tal Rupa Tal watershed using geospatial tools, Kaski district, Nepal

Dissertation submitted in partial fulfilment of the requirements for the Degree of Master of Science in Geospatial Technologies

Design and testing of a radiation hardened 13-bit 80 MS/s pipeline ADC implemented in a 90nm standard CMOS process

Second International Workshop on Analog and Mixed Signal Integrated Circuits for Space Applications (AMICSA 2008), Sintra, Portugal, Setembro de 2008

Innovation through virtual communities of practice: motivations and constraints in the knowledge-creation process

This paper appears in International Journal of Projectics. Vol 4(1), pp. 39-49

Numerical Method to Predict Void Formation during The Liquid Composite Molding Process

Void formation during the injection phase of the liquid composite molding process can be explained as a consequence of the non-uniformity of the flow front progression. This is due to the dual porosity within the fiber perform (spacing between the fiber tows is much larger than between the fibers within in a tow) and therefore the best explanation can be provided by a mesolevel analysis, where the characteristic dimension is given by the fiber tow diameter of the order of millimeters. In mesolevel analysis, liquid impregnation along two different scales; inside fiber tows and within the open spaces between the fiber tows must be considered and the coupling between the flow regimes must be addressed. In such cases, it is extremely important to account correctly for the surface tension effects, which can be modeled as capillary pressure applied at the flow front. Numerical implementation of such boundary conditions leads to illposing of the problem, in terms of the weak classical as well as stabilized formulation. As a consequence, there is an error in mass conservation accumulated especially along the free flow front. A numerical procedure was formulated and is implemented in an existing Free Boundary Program to reduce this error significantly.

Downstream processing development of enveloped viruses for clinical applications: innovative tools for rational process optimization

Dissertation presented to obtain a Ph.D. degree in Engineering and Technology Sciences, Biotechnology at the Instituto de Tecnologia Qu��mica e Biol��gica, Universidade Nova de Lisboa

Plano Director Municipal de Oeiras ��� Avalia����o dos Programas Estrat��gicos e seus Impactes Territoriais

Disserta����o de Mestrado em Gest��o do Territ��rio na ��rea de Planeamento e Ordenamento do Territ��rio

Using perspective schema and a reference model to design the ETL process

Disserta����o apresentada para a obten����o do Grau de Doutor em Inform��tica

A process-based control for evolvable production systems

Disserta����o apresentada na Faculdade de Ci��ncias e Tecnologia da Universidade Nova de Lisboa para a obten����o do grau de Mestre em Engenharia Electrot��cnica e de Computadores

Establishing a high titer transient gene expression process in conditioned media for CHO-DG44 cells

Disserta����o para obten����o do Grau de Mestre em Biotecnologia

Dynamics of cork mycobiota throughout stopper manufacturing process: from diversity to metabolite

Dissertation presented to obtain the Ph.D degree in Biology

Reconstitution of the failure of the Fonte Santa mine tailings dam. Modelling of the dam breaching process

Disserta����o apresentada na Faculdade de Ci��ncias e Tecnologia da Universidade Nova de Lisboa para obten����o do grau de Mestre em Engenharia Civil Perfil de Estruturas e Geotecnia