984 resultados para super-orbital re-entry
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O conforto uma necessidade para a maioria das pessoas. A busca de vesturio que se adapte s condies ambientais tornou-se essencial. Queremos materiais que nos mantenham quentes ou frescos, em condies de frio ou calor, e sejam capazes de nos manter secos se chover, ou se transpirarmos, devido a actividade intensa, ou simplesmente porque est quente. O objectivo principal deste trabalho era desenvolver uma estrutura multicamada respirvel, para posterior aplicao num sapato perfurado, tornando-o respirvel e impermevel. So j aplicados em peas de roupa e calado, materiais que permitem essa gesto de calor e humidade as membranas. Neste trabalho, foram apresentadas algumas membranas, de fabricantes e materiais diferentes, que foram testadas de modo a obter valores para a transmisso de vapor de gua e classific-las quanto sua respirabilidade, relativamente a uma membrana de referncia. Foram feitos testes com as membranas isoladas, laminadas e com sobreposio de duas membranas laminadas. Verificou-se que a laminagem no diminua, substancialmente, a respirabilidade das membranas. J a sobreposio de membranas, demonstrou diminuir em 35 % a respirabilidade das membranas. A membrana com melhor desempenho constituda por um polmero de base ter e blocos de amida (PEBA). Ainda pouco aplicado em vesturio e calado, mas com algum potencial, so os no-tecidos impregnados com polmeros super absorventes (SAPs). Estes podem absorver at 500 vezes o seu peso em gua, dependendo da quantidade de SAPs com que o no tecido impregnado e da aplicao final. Esta capacidade de adsoro seria uma mais-valia, em condies de chuva intensa, mas por outro lado, se atingir a saturao, no permite a entrada ou sada de ar, o que poderia levar a desconforto no utilizador. Por fim, foi utilizado um manequim trmico (p), onde se testaram diferentes calados, verificando-se que s possvel perder calor e vapor de gua pela sola do sapato se esta se encontrar perfurada e utilizar um sistema respirvel. Futuramente, pretende-se aplicar uma outra camada de no-tecido, na outra face das membranas j testadas, de modo a criar um sistema de 3 camadas, e testar a sua respirabilidade. Sugere-se, tambm, criar uma estrutura slida e arejada para utilizar os no-tecidos impregnados em SAPs. Posteriormente, deve-se aplicar estas estruturas num sapato com a sola perfurada e test-las no manequim trmico.
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We study the effects of entry of a foreign firm on domestic welfare in the presence of licensing, when the entrant is technologically inferior to the incumbent. We show that foreign entry increases domestic welfare for intermediate (respectively, sufficiently large) technological differences between the firms under licensing with fixed fee (respectively, output royalty).
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Este artigo procura evidenciar o empreendedorismo enquanto mecanismo de resposta (re)insero social, entendido enquanto necessidade ou oportunidade. Para alm da apresentao do empreendedorsimo enquanto opo individual, destaca-se o papel que as universidades e institutos politcnicos devem assumir no desenvolvimento do esprito empreendedor no cluster dos recm-licenciados.
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4 Festival Nacional de Robtica - Actas do Encontro Cientfico - Proceedings of the Scientific Meeting, Biblioteca Almeida Garrett, Palcio de Cristal Porto, 23-24 Abril 2004
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PURPOSE: To describe three cases of orbital tuberculosis, with their clinical characteristics and respective diagnostic procedures, showing the importance of histopathology for the correct diagnosis. PATIENTS AND METHODS: Three patients diagnosed and treated for orbital tuberculosis, in the "Hospital das Clnicas da Faculdade de Medicina da Universidade de So Paulo" during the years of 1999 and 2001. RESULTS: All of the patients were female and referred a chronic evolution of swelling of one eyelid associated or not with other symptoms. They had not HIV infection. Two of them had positive epidemiology for tuberculosis. However, the search for systemic evidence of the disease and staining for bacilli (Ziehl-Neelsen method) were negative in all three patients. In all the cases, only the biopsy with immunohistochemical analysis could confirm the diagnosis. COMMENTS: Orbital involvement is a rare ocular manifestation of tuberculosis. Even in a tertiary hospital, few cases, if any, are diagnosed per year. However, the global incidence and prevalence of M. tuberculosis infections is not under control yet, and it has been a serious public health problem. Thus, one must be aware of the possibility of tuberculosis among the orbital diseases.
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O presente relatrio reflete um projeto de investigao no mbito do Mestrado em Educao e Interveno Social, que assume como metodologia a Investigao Ao-Participativa, e que desenvolvido e construdo com um grupo de pessoas desempregadas. Assim, e contando com os participantes como co-construtores de todo o processo, foi necessrio elaborar uma anlise e caracterizao da realidade da qual surgiram alguns problemas. com base neles que o projeto comea a ser delineado, tendo por base a educao no-formal de adultos, e recorrendo a aes e atividades para se alcanarem os objetivos definidos e, desta forma, ser possvel compreender qual o impacto que ele teve na vida dos participantes. Denominado por Deixem que eu me (Re)Encontre, este projeto de investigao pretendeu proporcionar momentos de desenvolvimento da autoestima, de redescoberta de capacidades e competncias, e de criao de uma rede de suporte afetivo, estimulando nos participantes a apropriao de um poder de interveno, gerador de mudana nas suas vidas, que h muito se tinha perdido.
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Exenteration of the orbit is a disfiguring and destructive procedure; it is generally performed for orbital malignancies and often provides a significant reconstructive challenge. Our purpose was to evaluate the clinical indications for orbital exenteration in a tertiary referral center and to assess the reconstructive options employed. A retrospective nonrandomized analysis was performed, selecting all patients undergoing orbital exenteration over a 5-year period, between January 2005 and January 2010. Patient demographics, tumor characteristics, and reconstructive techniques used were evaluated. Twenty patients with a mean age of 76.5 years underwent total orbital exenteration. Basal cell carcinoma was the main operative indication (45%), followed by squamous cell carcinoma (15%). Reconstructive techniques included cover of the raw orbital cavity with a temporal muscular flap in all cases followed with split skin grafting (25%), bilaterally pedicle V-Y advancement flap (10%) and a fasciocutaneous island flap of the retroauricular region (65%). Twenty percent of patients had local complications and all were treated in a satisfactory fashion. Eyelid skin tumors remain an important cause of orbital exenteration. Temporal muscle flap is a reliable and stable reconstructive solution after orbital exenteration and additional aid is supplied with skin grafts or local flaps. This technique ensures a good aesthetic outcome and better situation for later complementary treatments and minimal associated donor site morbidity.
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Dans cet article, nous presenterons une etude comparative de quelques techniques de manipulation du signal comme la Transformee de Fourier a Court Terme, la Synthese Granulaire Asynchrone et PSOLA, notamment dans le cadre de leur utilisation en temps reel. Nous presenterons succinctement le fonctionnement de ces trois methodes dans lenvironnement Max / MSP avec lutilisation de la librairie GABOR. La manipulation des parametres propres a chaque methode a des consequences sur les variables musicales, et lutilisation de ces methodes implique des correlations entre les parametres techniques du traitement du signal et des attributs musicaux specifiques. Ainsi, nous essayerons dexplorer les espaces des parametres et de la perception musicales entre le temps, la periode et le spectre (les rythmes, les frequences et les timbres) en comparant les differentes methodes en vue de leur croisement dans un systeme de traitement commun.
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Notre etude presente une reflexion a propos de espaces musicaux composables. Cette reflexion inclue lusage intentionnel des qualites sonores percues dans la construction de sons et donc dans la composition musicale. Nos recherches se trouvent a lintersection entre le son, comme phenomene physique qui se propage dans un espace, les sensations spatiales qui peuvent etre engendrees par la perception auditive de ses certaines caracteristiques, et la pratique de la composition musicale despaces de sons dans les uvres. Nous developpons lidee dune entite sonore composable des sa microstructure. Nous la concevons par analogie avec les objets du monde visible et palpable. Nous utilisons les idees de volume, forme et matiere ainsi que celles de position et de mouvement des objets materiels, comme metaphore pour concevoir des entites sonores complexes et des espaces musicaux composes dans lesquels elles seront integrees. Cette entite sonore constituee dun ensemble delements disparates, permet le developpement de reseaux operatoires manipulables dans, la pratique, par les compositeurs.
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Dans cet article, nous mettrons en evidence le rapport etroit tisse par Xenakis entre les uvres La legende dEer et Jonchaies notamment au niveau de la structure formelle et des sonorites. // In this paper, we will show some evident examples about the close rapports between La legende dEer and Jonchaies by Xenakis, especially in terms of formal structure and sonorities.
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Glass fibre-reinforced plastics (GFRP), nowadays commonly used in the construction, transportation and automobile sectors, have been considered inherently difficult to recycle due to both the cross-linked nature of thermoset resins, which cannot be remoulded, and the complex composition of the composite itself, which includes glass fibres, polymer matrix and different types of inorganic fillers. Hence, to date, most of the thermoset based GFRP waste is being incinerated or landfilled leading to negative environmental impacts and additional costs to producers and suppliers. With an increasing awareness of environmental matters and the subsequent desire to save resources, recycling would convert an expensive waste disposal into a profitable reusable material. In this study, the effect of the incorporation of mechanically recycled GFRP pultrusion wastes on flexural and compressive behaviour of polyester polymer mortars (PM) was assessed. For this purpose, different contents of GFRP recyclates (0%, 4%, 8% and 12%, w/w), with distinct size grades (coarse fibrous mixture and fine powdered mixture), were incorporated into polyester PM as sand aggregates and filler replacements. The effect of the incorporation of a silane coupling agent was also assessed. Experimental results revealed that GFRP waste filled polymer mortars show improved mechanical behaviour over unmodified polyester based mortars, thus indicating the feasibility of GFRP waste reuse as raw material in concrete-polymer composites.
