A nova abordagem do Webmarketing aliada ao comportamento do consumidor

Dissertação apresentada à Escola Superior de Comunicação Social para obtenção de grau de mestre em Publicidade e Marketing.

Controlo de custos de uma obra pública, por parte do dono de obra

De acordo com o contrato estabelecido entre a Administração do Porto de Sines, S.A. e a PSA Sines, concessionária do Terminal de Contentores de Sines (TCS), cabe à Autoridade Portuária a proteção necessária à operação portuária. Neste sentido, foi estabelecido um planeamento faseado do desenvolvimento do Molhe Leste do Porto de Sines, de acordo com o desenvolvimento do Terminal XXI. Tendo já o concessionário procedido à ampliação do cais de 380 metros para 730 metros, cabe à Autoridade Portuária proceder às operações necessárias que proporcionem as adequadas condições de abrigo à agitação marítima. Com um investimento de €32 500 000,00, por parte da APS, S.A., surge a empreitada “2.ª Fase de Ampliação do Molhe Leste do Porto de Sines”. Trata-se portanto, de uma oportunidade única para um aluno de Engenharia Civil no ramo de Hidráulica, proceder ao acompanhamento e fiscalização da empreitada numa empresa de referência a nível Mundial. A finalidade deste relatório será enunciar o procedimento adotado na tarefa de fiscalização de controlo de custos, durante a fase de execução da “2.ª Fase de Ampliação do Molhe Leste do Porto de Sines”, do ponto de vista do Dono de Obra (APS, S.A.), descrevendo todas as etapas decorrentes do processo de fiscalização de controlo de custos de uma obra pública de acordo da legislação em vigor, nomeadamente o Código dos Contratos Público (C.C.P.).

Waste Marble Dust Blended Cement

Marble processing activities generates a.significant amount of waste in dust form. This waste, which is nowadays one of the environmental problems worldwide, presents great potential of being used as mineral addition in blended cements production. This paper shows preliminary results of an ongoing project which ultimate goal is to investigate the viability of using waste marble dust (WMD), produced by marble Portuguese industry, as cement replacement material. In order to evaluate the effects of the WMD on mechanical behaviour, different mortar blended cement mixtures were tested. These mixtures were prepared with different partial substitution level of cement with WMD. Strength results of WMD blended cements were compared to control cements with same level of incorporation of natural limestone used to produce commercial Portland-limestone cements. The results obtained show that WMD blended cements perform better than limestone blended cements for same replacement level up to 20% w/w. Therefore, WMD reveals promising attributes for blended cements production.

Historical Heritage: A Study to Conservation

Considering ancient monuments and historical buildings, it seems that these mortars have proved to be durable and reliable materials. The restoration and maintenance of old renders is one of the key aspects of correct rehabilitation practice. The ideal course of action is to replace the damaged material by a material with compatible characteristics.The study in development presents the chemical, physical and morphologic analysis performed for ancient air lime mortars belonging to historical monuments: Santa Marta Fortress in the coast line Lisbon-Cascais dated from XVII century and Defense Wall of Lisbon dated from XI century, which layout could be associated to roman period. It is important to underline that the studied samples of ancient portuguese air lime mortars, have been submitted during centuries to very severe maritime environment that includes daily cycles of wet/dry, wind, friction and the constant presence of salts, generally aggressive. However, they show very good performance and conservation state, unlike most of the new air lime mortars, which are generally considered weak, not very durable, materials. This work is included in a study intending to determine key factors to the durability of these ancient materials in presence of water. Visible reaction rims around some aggregates suggests the occurrence of pozzolanic reactions between aggregates and the lime binder that creates neoformation products, such as calcium-silico-aluminates, which seems be, besides the pores filling, the responsible for the resistance and cohesion of these ancient mortars submitted to aggressive humid environments.

Synthesis, characterization, electrochemical behavior and in vitro protein tyrosine kinase inhibitory activity of the cymene-halogenobenzohydroxamato [Ru(eta(6)-cymene)(bha)Cl] complexes

The ruthenium(II)-cymene complexes [Ru(eta(6)-cymene)(bha)Cl] with substituted halogenobenzohydroxamato (bha) ligands (substituents = 4-F, 4-Cl, 4-Br, 2,4-F-2, 3,4-F-2, 2,5-F-2, 2,6-F-2) have been synthesized and characterized by elemental analysis, IR, H-1 NMR, C-13 NMR, cyclic voltammetry and controlled-potential electrolysis, and density functional theory (DFT) studies. The compositions of their frontier molecular orbitals (MOs) were established by DFT calculations, and the oxidation and reduction potentials are shown to follow the orders of the estimated vertical ionization potential and electron affinity, respectively. The electrochemical E-L Lever parameter is estimated for the first time for the various bha ligands, which can thus be ordered according to their electron-donor character. All complexes exhibit very strong protein tyrosine kinase (PTK) inhibitory activity, even much higher than that of genistein, the clinically used PTK inhibitory drug. The complex containing the 2,4-difluorobenzohydroxamato ligand is the most active one, and the dependences of the PTK activity of the complexes and of their redox potentials on the ring substituents are discussed. (C) 2012 Elsevier B.V. All rights reserved.