8,763 research outputs found

    A proposal of sensitive indicators of the rehabilitation nursing care of people in the surgical process, to be included in the ontology of aging

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    Given the complex surgical scenario observed today, it is necessary to change the urgent definition of a specific ontology, especially in terms of aging. The interventions of the Specialist Nurse in Rehabilitation Nursing to the person in the surgical process are primordial for the maintenance of the functional capacities, prevention of complications and impediment of incapacities. However, it is necessary to provide individualized and fostered care in a practice of excellence, and the consequent organized reading of records of an aging ontology for decision making on rehabilitation indicators. Method: a systematic review of the literature was carried out using the EBSCO host (MEDLINE with Full Text, CINAHL Plus with Full Text and MedicLatina), using the PI [C] O method, and 11 articles were selected. Results: 41 indicators were identified to be included in the ontology classes of aging: pain control, patient and family education, support and communication, reduction of postoperative complications, gain of functionality, restoration of physical function, mobility, multidisciplinary intervention and the frequency of interventions. Conclusion: it is considered that it was imperative to identify sensitive indicators for rehabilitation nursing care, based on scientific evidence and thus provide an opportunity for nurses to reflect on their daily practices and conduct their actions towards excellence in care, to propose a set of 41 classes internationally on the ontology of aging

    A statistical mechanical analysis on the possibility of achieving fair cylindrical dice

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    Many have dedicated their time trying to determine the ideal conditions for a cylinder to have equal probabilities of falling with one of its faces facing upwards or on its side. However, to this day, there is no concrete analysis of what these conditions should be. In order to determine such circumstances, a theoretical analysis was conducted, considering approaches from Rigid Body Dynamics and Statistical Mechanics. An experimental system was also built to improve control over the launches, and a comparative analysis was performed between the results obtained experimentally and the theory. It was concluded that the environment and other launching conditions have a significant influence; nevertheless, it is possible, under controlled conditions, to determine, within certain limits, the expected probabilities.Comment: 27 pages, 25 figure

    CRISP (crayfish and rice integrated system of production): 2. Modelling crayfish (Procambarus clarkii) population dynamics

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    An ecological sub-model of crayfish (Procambarus clarkii) population dynamics is presented for integration into the CRISP (crayfish and rice integrated system of production) series of models. The present structure is directed towards simulation of crayfish population responses under different human interventions, namely different capture rates. The crayfish population was subdivided into seven age classes of 80 days, each one constituting a state variable. The increase in weight for each 80-day period was considered dependent on the temperature, the oxygen level and the water level. Mortality was assumed to be dependent on the dry weight of the crayfish and regulated by the total crayfish biomass. Food, water and oxygen content of the water were considered to be non limiting. Total crayfish biomass and total wet weight of crayfish captures were very sensitive to both the temperature for maximum growth and the mortality rates. Our most optimistic simulation, with a 50% decrease in the mortality rates, resulted in a fourfold increase in captures, from 230 to 917 kg ha-1 per year. Without capture, a value of 121 kg ha-1 was simulated for the average crayfish biomass, which is close to the 124 kg ha-1 obtained with crayfish capture. Our simulated average crayfish biomass was approximately 120 kg ha-1 in a natural situation, which lies inside the reported ranges from areas at approximately the same latitude.http://www.sciencedirect.com/science/article/B6VBS-3XM2SN8-2/1/c3c8d93a43ea0ffd5fc0055b9347934

    Stock market series analysis using self-organizing maps

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    In this work a new clustering technique is implemented and tested. The proposed approach is based on the application of a SOM (self-organizing map) neural network and provides means to cluster U-MAT aggregated data. It relies on a flooding algorithm operating on the U-MAT and resorts to the Calinski and Harabask index to assess the depth of flooding, providing an adequate number of clusters. The method is tuned for the analysis of stock market series. Results obtained are promising although limited in scope. Neste trabalho é implementada e testada uma nova técnica de agrupamento. A abordagem proposta baseia-se na aplicação de uma rede neuronal SOM (mapa autoorganizado) e permite agrupar dados sobre a matriz de distancias (U-MAT). É utilizado um algoritmo de alagamento ("flooding") sobre a U-MAT e o índice de Calinski e Harabasz avalia a profundidade do alagamento determinando-se, assim, o número de grupos mais adequado. O método é desenhado especificamente para a análise de séries temporais da bolsa de valores. Os resultados obtidos são promissores, embora se registem ainda limitações

    Conservação e melhoramento dos recursos genéticos animais da Amazônia Brasileira.

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    Muitas espécies animais da Amazônia estão ameaçadas de extinção ou sofrem forte pressão de descaracterização. Isto ocorre com eqüinos como o cavalo Marajoara e Puruca (Equus caballus), búfalos como o Tipo Baía e a raça Carabao do Brasil (Bubalus bubalis) e com espécies nativas, como o Muçuã (Kinosternon scorpioides). A Amazônia é uma das áreas mais predadas do planeta e a devastação que vem ocorrendo, ainda hoje, contribuí para o empobrecimento da biodiversidade, além de interferir na adaptabilidade, desempenho e sobrevivência das espécies introduzidas. No permeio de espécies amazônicas importantes como o peixe-boi, o pirarucu, os jacarés, araras diversas ou de um inseto, que nem foi catalogado pelo homem, há animais de interesse zootécnico que podem desaparecer. Os eqüinos e os búfalos fazem parte dos recursos zoogenéticos do Brasil, na Rede Nacional de Recursos Genéticos - RENARGEN, coordenada pela Embrapa CENARGEN, juntamente com inúmeras raças naturafízadas que compõem o universo da pecuária brasileira, que é a mais diversificada de fado O planeta. Nesse contexto há peculiaridades genéticas importantes, como: o único mini cavalo do Brasil, o Puruca, com características tão próprias e importantes que o fazem enfrentar as adversidade climáticas e geográficas da maior ilha flúvio-marinha do mundo, o Marajó, que abriga em contexto semelhante um dos cavalos brasileiros mais importantes, o Marajoara, não só pela rusticidade, inteligência no adestramento, força e resistência natural, como pela importâncía genética, pois deve ter grande participação na origem de outros importantes grupamentos de eqüinos da região, ou seja: os cavalos Baixadeiro (Baixada maranhense) e o Lavradeiro (dos campos de Roraima), além do Varzeiro, que domina grande parte das áreas de várzeas de Itacoatiara (Amazonas) até Prainha (Pará); dentre os búfalos há um tipo que não é reconhecido como raça, o Baio, e outro que, apesar de constituir uma raça, ainda hoje presente em todo o Sudeste asiático (o Swamp buftalo), adquiriu características próprias das condições brasileiras. Ambos fazem parte do conjunto de raças naturalizadas em conservação no nosso País. Vale ressaltar que não há, em todo o Brasil, 300 animais Baios ou 500 Carabaos, enquadrando-se na classificação da FAO, como grupos em alto risco de extinção. Existe, ainda, uma tartaruguinha característica das áreas de campo, importante para a gastronomia regional que, se conhecida, pode adquirir também grande importância como animal ornamental. Estas foram as principais razões para a criação e implantação, pela Embrapa Amazônia Oriental, do Banco de Germoplasma Animal da Amazônia Oriental - BAGAM, em 1997, destinado à conservação "on ierm" de espécies animais da Amazônia de valor socioeconômico e biológico, que apresentam risco de extinção e/ou descerectetizeçêo. Com tais ações espera-se manter as populações ameaçadas num patamar seguro de conservação, municiando a comunidade científica e a classe produtora com informações sobre os genes mais produtivos, além de assegurar a manutenção da variabilidade genética, bem como estudar a biologia das espécies, possibilitando novos estudos e descobertas.ZOOTEC

    Investigating interaction-induced chaos using time-dependent density functional theory

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    Systems whose underlying classical dynamics are chaotic exhibit signatures of the chaos in their quantum mechanics. We investigate the possibility of using time-dependent density functional theory (TDDFT) to study the case when chaos is induced by electron-interaction alone. Nearest-neighbour level-spacing statistics are in principle exactly and directly accessible from TDDFT. We discuss how the TDDFT linear response procedure can reveal the mechanism of chaos induced by electron-interaction alone. A simple model of a two-electron quantum dot highlights the necessity to go beyond the adiabatic approximation in TDDFT.Comment: 8 pages, 4 figure

    Differentiation of Citrus tristeza virus (CTV) isolates by cleavase fragment length polymorphism (CFLP) analysis of the major coat protein gene

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    A panel of Citrus tristeza virus (CTV, genus Closterovirus, family Closteroviridae) isolates of different origins and with different biological properties were compared for polymorphisms in the major coat protein (CP) gene by cleavase fragment length polymorphism (CFLP) and single stranded conformation polymorphism (SSCP) analysis. The similarity between the CFLP patterns, which consisted of 15 to 20 bands, was estimated by the Pearson coefficient. The clustering patterns from the CFLP data were very similar to those from sequence data in an experiment with 16 cloned standards of the CP gene. By SSCP analysis on the other hand, most of the clones were not clustered in the same way. To assess the ability of CFLP to analyse biological samples, which may consist of a mixture of genomic variants, the CP gene of 12 CTV isolates was obtained directly from infected plants by immunocapture/RT-PCR and analysed. With few exceptions, the isolates were correctly clustered according to the sequences of the variants composing the isolates. In artificial mixed infections of mild and severe isolates the patterns obtained were more closely related to the severe isolate. Thus the CFLP method was an accurate method for the identification, typing and clustering of CTV isolates. The usefulness of this technique as an alternative to SSCP analysis is suggested and discussed

    When expectancies harm comprehension: encoding flexibility in impression formation

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    We explored the possibility that the encoding flexibility processes postulated by Sherman and colleagues (1998) may also apply to intentional impression formation settings, even when cognitive resources are available to conceptually encode all of the behavioral information regardless of the relation of that information to the initial stereotypical expectancies. Three experiments offer evidence for the lower conceptual fluency for expectancy-incongruent behaviors, compared with congruent behaviors, as well as for the consequences of that difference for impression formation. Experiment 1 shows that incongruent behaviors are perceived as more difficult to understand in meaning. Experiment 2 links this lower conceptual fluency with a better discrimination of the specific trait implications of the behaviors. We further explore the role of conceptual encoding difficulty for developing personality impressions (Experiment 3). These studies reveal the implications of initial expectancies for the differential conceptual encoding of congruent and incongruent behaviors, even when the availability of cognitive resources is high, such as when forming an intentional impression about a person's personality. The link between this process and encoding the trait implications of behaviors may shed new light on impression formation processes and demand a revision of some of the assumptions that were made by the classical person memory model. We contend that behavior encoding in impression formation is likely to begin with default trait encoding but will be inhibited when the implications of the behavior conflict with previous trait expectancies (see also Wigboldus, Dijksterhuis, & van Knippenberg, 2003). (C) 2015 Elsevier Inc. All rights reserved.info:eu-repo/semantics/acceptedVersio

    Spatial resolution on a small animal RPC-PET prototype operating under magnetic field

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    It has been demonstrated in previous work that the RPC-PET technology is able to deliver radioisotope image resolutions approaching the physical limits of the PET principle. Here we study, by simulation, the effect of the magnetic field on the positron range to evaluate whether the spatial resolution of the RPC-PET could be improved by using an intense magnetic field. Six positron emitters of interest to small animal PET imaging (18F, 11C, 15O, 68G, 62Cu and 86Y) are considered. Results suggest that a three-fold improvement on the spatial resolution may be obtained under a magnetic field of 10 T for the higher energy radioisotopes like 86Y or 62Cu, and by about 20% for the lower energy ones, like 18F or 11C.http://www.sciencedirect.com/science/article/B6TVD-4KV4MR8-15/1/efa4356ba16a85fd7740937bd0e672a

    Very high position resolution gamma imaging with resistive plate chambers

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    In this study we present experimental results from a first prototype of a positron emission tomography system based on the resistive plate chamber (RPC) technology. The system is composed of two counting heads, each one containing 16 single-gap RPC detectors capable of detecting the photon interaction point in the transaxial plane. Uniformity studies were performed for image resolution and sensitivity, yielding a rather uniform image resolution close to 0.3 mm FWHM across the field of view. The contribution of the photons noncolinearity effect to the intrinsic spatial resolution was also studied, causing a variation from 0.52 to 0.63 mm when the system diameter ranges from 60 to 120 mm, in agreement with calculations.http://www.sciencedirect.com/science/article/B6TJM-4K5HV7F-9/1/7b655e08199d2b28acc8050106c2271
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