853 research outputs found

    Acompanhamento Fonoaudiológico e Interdisciplinar de Sujeitos com Lesão Encefálica: Atendimento Individual e Grupo de Convivência

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    Trabalho apresentado no 31º SEURS - Seminário de Extensão Universitária da Região Sul, realizado em Florianópolis, SC, no período de 04 a 07 de agosto de 2013 - Universidade Federal de Santa Catarina.Esta ação de extensão presta cuidado a sujeitos com afasia ou disartria e seus familiares/cuidadores. As afasias são alterações da linguagem verbal (oral e escrita) resultantes de lesões encefálicas adquiridas, enquanto que as disartrias são alterações fonoarticulatórias. Realiza-se acompanhamento fonoaudiólogo (linguagem oral e escrita, motricidade orofacial, voz, audição e de equilíbrio) individualmente e em grupo (Grupo Interdisciplinar de Convivência) junto aos afásicos e disártricos e acompanhamento interdisciplinar dos familiares/cuidadores. A completa reabilitação de lesões encefálicas é difícil de ser alcançada por meio de ações profissionais isoladas, uma vez que a lesão cerebral produz, além da afasia ou disartria, outras sequelas como: hemiplegia, diplopia, disfagia e dificuldades de audição. Esta ação agrega conhecimentos da Fonoaudiologia, Terapia Ocupacional e Psicologia. As sessões fonoaudiológicas dos sujeitos afásicos e disártricos ocorrem semanalmente com duração aproximada de uma hora. Os encontros do Grupo de Convivência Interdisciplinar, também semanais, com duração de quatro horas e o Grupo de Familiares/Cuidadores ocorre quinzenalmente com duração aproximada de uma hora e meia. O acompanhamento fonoaudiológico e no Grupo de Convivência favorecem o exercício vivo da linguagem (verbal e não verbal) e atividades corporais e orofaciais visando contribuir para a qualidade de vida dos sujeitos envolvidos. Além dos atendimentos, realizam-se atividades promotoras de saúde - prevenção de agravos e a ocorrência de novos casos de lesões cerebrais adquiridas. Foram atendidos em terapia fonoaudiológica individual oito sujeitos (seis participantes do GIC e dois ex participantes) sendo destes seis afásicos e dois disártricos. Esta ação de extensão possibilita o aprimoramento de conhecimentos sobre as sequelas de lesões encefálicas, bem como a troca de saberes, promovendo a interdisciplinaridade nos atendimentos e uma formação ampliada em saúde

    História e(m) imagens: narrativas visuais e contemporaneidade

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    Anais do II Seminário Seminário Estadual PIBID do Paraná: tecendo saberes / organizado por Dulcyene Maria Ribeiro e Catarina Costa Fernandes — Foz do Iguaçu: Unioeste; Unila, 2014O ensino de história em nível fundamental e médio impõe ao licenciado o domínio de situações que superam o conhecimento adquirido e produzido na academia. O uso cada vez mais frequente das chamadas “novas linguagens”, atenta para a necessidade de se fazer destes recursos um uso cuidadoso, evitando sua banalização e oferecendo os recursos necessários para uma leitura crítica e contextualizada. Neste sentido, o projeto “História e(m) imagens: narrativas visuais e contemporaneidade” pretende instrumentalizar professores e alunos para o uso do cinema e dos quadrinhos no ensino de História e a presença de algumas das experiências históricas do século XX nessas mídias. Entende-se que o uso das HQs e do cinema em sala de aula, além de servir como um recurso interessante ao professor, pode igualmente qualificar a leitura dos estudantes e ser uma porta de acesso a outros meios de aproximação com a históri

    Single photon thermal ionization of C60

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    We report on experiments which show that C60 can ionize in an indirect, quasi-thermal boiloff process after absorption of a single photon. The process involves a large number of incoherently excited valence electrons and yields electron spectra with a Boltzmann distribution with temperatures exceeding 10^4 K. It is expected to be present for other molecules and clusters with a comparatively large number of valence electrons. The astrophysical consequences are briefly discussed

    Convective instability in a horizontal porous channel with permeable and conducting side boundaries

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    The stability analysis of the motionless state of a horizontal porous channel with rectangular cross-section and saturated by a fluid is developed. The heating from below is modelled by a uniform flux, while the top wall is assumed to be isothermal. The side boundaries are considered as permeable and perfectly conducting. The linear stability of the basic state is studied for the normal mode perturbations. The principle of exchange of stabilities is proved, so that only stationary normalmodes need to be considered in the stability analysis.The eigenvalue problem for the neutral stability condition is solved analytically, and a closed-form dispersion relation is obtained for the neutral stability. The Darcy–Rayleigh number is expressed as an implicit function of the longitudinalwave number and of the aspect ratio. The critical wave number and the critical Darcy–Rayleigh number are evaluated for different aspect ratios. The preferredmodes under critical conditions are detected. It is found that the selected patterns of instability at the critical Rayleigh number are two-dimensional, for slender or square cross-sections of the channel. On the other hand, instability is three dimensional when the critical width-to-height ratio, 1.350517, is exceeded. Eventually, the effects of a finite longitudinal length of the channel are discussed

    NEXAFS spectroscopy and site-specific fragmentation of N -methylformamide, N,N -dimethylformamide, and N,N -dimethylacetamide

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    Near-edge X-ray absorption fine-structure (NEXAFS) spectra measured at the C, N, and O K-edges for three molecules containing the amide moiety, N-methylformamide (HCONHCH3), N,Ndimethylformamide (HCON(CH3)2), and N,N-dimethylacetamide (CH3CON(CH3)2) are presented. These molecules have similar structures and differ by the number of methyl groups located at the molecular ends. The fragmentation of these molecules after resonant excitation at different K-edge resonances is also investigated, using a 3D-ion imaging time-of-flight spectrometer. A comparison between the molecules with respect to the relative contributions of the fragments created upon excitation at distinct resonances reveals site-specific fragmentation. Further information about the character of the core-excitation and dissociation process is obtained from the angular distributions of the ion fragments

    Double photoionization of propylene oxide: a coincidence study of the ejection of a pair of valence-shell electrons

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    Propylene oxide, a favorite target of experimental and theoretical studies of circular dichroism, was recently discovered in interstellar space, further amplifying the attention to its role in the current debate on protobiological homochirality. In the present work, a photoelectron-photoion-photoion coincidence technique, using an ion-imaging detector and tunable synchrotron radiation in the 18.0-37.0 eV energy range, permits us (i) to observe six double ionization fragmentation channels, their relative yields being accounted for about two-thirds by the couple (C2H4+, CH2O+) and one-fifth by (C2H3+, CH3O+); (ii) to measure thresholds for their openings as a function of photon energy; and (iii) to unravel a pronounced bimodality for a kinetic-energy-released distribution, fingerprint of competitive non-adiabatic mechanisms

    High temperature structural and magnetic properties of cobalt nanowires

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    We present in this paper the structural and magnetic properties of high aspect ratio Co nanoparticles (~10) at high temperatures (up to 623 K) using in situ X ray diffraction (XRD) and SQUID characterizations. We show that the anisotropic shapes, the structural and texture properties are preserved up to 500 K. The coercivity can be modelled by u0Hc=2(Kmc+Kshape)/Ms with Kmc the magnetocrystalline anisotropy constant, Kshape the shape anisotropy constant and Ms the saturation magnetization. Hc decreases linearly when the temperature is increased due to the loss of the Co magnetocrystalline anisotropy contribution. At 500K, 50% of the room temperature coercivity is preserved corresponding to the shape anisotropy contribution only. We show that the coercivity drop is reversible in the range 300 - 500 K in good agreement with the absence of particle alteration. Above 525 K, the magnetic properties are irreversibly altered either by sintering or by oxidation.Comment: 8 pages, 7 figures, submitted to Journal of Solid State Chemistr

    Studies of molecular photoionization of simple systems by advanced photon sources

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    This doctorate thesis reports on a variety of experimental investigations aiming to advance the understanding of fundamental processes in molecules and clusters by exploiting the properties of Synchrotron and FEL radiation: photoionization dynamics, double ionization, dissociation and molecular recognition were subject of investigation. The emphasis of the thesis lies on the application of advanced light sources in the study of photoionization processes in simple gas-phase molecules, with particular attention on chiro-optical properties of chiral systems. The valence photoionization dynamics of a chiral molecule, namely the epichlorohydrin molecule, was studied for the first time and a peculiar electron correlation effect was observed. The experimental data were supported by state-of-the-art theoretical calculations. VUV direct double ionization was studied for the methyl oxirane chiral molecule by the use of Photoelectron-Photoion-Photoion Coincidence spectroscopy using synchrotron radiation. The chiral recognition mechanism of 1-methoxy-2-propanol oligomers was studied by FEL based IRMPD-VUV vibrational spectroscopy, a technique that exploits the nature of the photoionization process in order to apply the IRMPD spectroscopy to systems of arbitrary structure. The collaboration between the Sapienza University of Rome, the CNRIOM institute, and the Elettra Instrumentation and Detector Laboratory, has resulted in the development of a position sensitive cross delay line electron detector integrated in an experimental apparatus with the flexibility to perform synchrotron radiation (SR) photoemission experiments on gasphase systems. The improvement of the apparatus detection system has stimulated the collaboration with the Theoretical Chemistry group of the University of Trieste, in a joint experimental and theoretical long-term research activity, whose first part was the study of the photoionization dynamics of the Osmium tetroxide molecule, a highly reactive tetraoxo complex

    Model order reduction, filtering, and control of a pre-heating system for nuclear fusion machines towards real-time operation

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    openQuesto lavoro si occupa del problema di ricostruzione dello stato con il fine di stimare una serie di output virtuali nelle operazioni di pre-riscaldamento di macchine toroidali per fusione nucleare. Anzitutto, un modello termico dinamico basato su mesh 2D, e formulato secondo il metodo degli elementi finiti, viene studiato e il problema della ricostruzione viene risolto con osservatori di stato tradizionali. Poi, un modello termico semplificato di una macchina a fusione viene considerato e sottoposto a operazioni di riduzione d’ordine tramite diversi metodi. Il metodo balanced-truncation viene scelto e il problema della ricostruzione di stato viene studiato con osservatori basati su principi ottimi in norma H2 e Hinfinito . Dal punto di vista del design, nonostante il sistema analizzato sia numericamente osservabile, il problema di allocazione di poli si rivela problematico per gli osservatori tradizionali dando luogo a fenomeni di oscillazioni molto ampie. Il calcolo degli stimatori in norma ottima, invece, si conclude con soluzioni precise dell'equazione di Riccati sottostante I risultati di simulazione mostrano una qualità accettabile degli osservatori tradizionali e una precisione superiore degli stimatori in norma ottima, in condizioni di misure nominali. Si trova, inoltre, gli osservatori tradizionali non sono adatti alla stima degli output virtuali in condizioni rumorose, mentre gli osservatori H2 e Hinfinito funzionano bene in condizioni di rumore, con lo stimatore H2 che si dimostra in grado di rigettare rumore bianco. Infine, alcune considerazioni preliminari relative all’implementazione realistica di operazioni di controllo vengono discusse, e il problema del monitoraggio dell’anello di controllo durante il suo funzionamento viene presentato.The present work deals with the noisy state reconstruction problem aimed at virtual output prediction in the context of pre-heating operation of torus-shaped nuclear fusion machines. The creation of a dynamic model based on finite-element method is first studied on a 2D domain and the full-order reconstruction problem is tackled with traditional full-state and reduced-state asymptotic, feedback, observers. A simplified thermodynamic model of a typical nuclear fusion machine is then considered and reduced by means of different model order reduction techniques. Balanced-truncation reduction is retained and studied in the state reconstruction problem with infinite-horizon, optimal H2 , and sub-optimal Hinfty estimators. From a design viewpoint, despite the system being observable, pole allocation is problematic for traditional observer design, resulting in high-gain/peaking phenomena. Computation procedures for optimal, infinite-horizon filters are more elaborate but result in admissible solution of the withstanding Riccati equation. The observability property is investigated numerically as a function sampling time and dimension of the state space. Simulation results on the quality of the virtual output prediction indicate acceptable performance of traditional observer and superior precision of optimal, infinite-horizon, estimators on nominal measurements conditions. Results further indicate that traditional observers are unsuited for virtual measurement prediction in noisy conditions while Hinfty and H2 estimators perform well with the latter being able to completely reject measurement white noise. Finally, preliminary considerations towards realistic control operations are described and the monitoring problem of the control loop during its operation is discussed
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