943 resultados para VALENCE ISOMERIZATION
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A Rede Nacional de Cuidados Continuados (RNCCI) foi criada em 2006 pelo decreto-lei nº 101/2006, no âmbito do Ministério da Saúde e da Segurança Social. A RNCCI tem como missão prestar os cuidados adequados, de saúde e apoio social, a todas as pessoas que, independentemente da idade, se encontrem em situação de dependência, e articula-se com os serviços de saúde e sociais já existentes. Para cumprir a sua missão, a RNCCI, necessita de uma equipa multidisciplinar, na qual integram vários profissionais, tais como: médicos, enfermeiros, assistentes sociais, psicólogos, entre muitos outros, de entre estes os enfermeiros são os profissionais que maior percentagem detêm na constituição da mesma. Daí que seja pertinente a realização de estudos de investigação, com enfermeiros e estudantes de enfermagem, nesta nova valência de cuidados. O presente estudo incide sobre os conhecimentos dos estudantes de enfermagem sobre a RNCCI, que frequentam o terceiro e quarto ano na Escola Superior de Saúde do Instituto Politécnico de Bragança. Sendo a questão de investigação deste estudo: “Quais os conhecimentos dos alunos de enfermagem do terceiro e quarto ano da licenciatura em enfermagem sobre a RNCCI?”. Foi realizado um estudo de natureza quantitativa, descritivo, correlacional, num plano transversal. Optou-se por um processo de amostragem não probabilística de conveniência, que refletisse a distribuição da população por ano de escolaridade. Assim, considerou-se uma amostra de 120 alunos (75 % da população), selecionados acidentalmente, visando a disponibilidade, rapidez e o menor custo na recolha de dados. Concluiu-se que os alunos de enfermagem de uma forma geral apresentam conhecimentos sobre a RNCCI. Destacando-se uma percentagem de 90% de respostas corretas referentes sobre a RNCCI. No entanto 75% dos alunos responderam erradamente às afirmações relacionados com o processo de referenciação e tipologia das respostas da RNCCI. Comparando estes resultados com estudos realizados com enfermeiros que exercem funções na RNCCI, verifica-se que os alunos não apresentam conhecimentos suficientes para desencadear funções ou processos relacionados com a RNCCI, apesar de terem conhecimentos gerais da mesma, pois apresentam consideráveis falhas desde logo no processo de referenciação, assim como profissionais que já trabalham na área. Tais factos constatados salientam a importância de formação teórica e/ou prática, no plano curricular da licenciatura de enfermagem, preparando os futuros enfermeiros para exercerem as suas funções na RNCCI, e não só. Pois os enfermeiros que trabalham nos cuidados de saúde primários e secundários, também eles necessitam de ter conhecimentos sobre a RNCCI, verificando-se muito frequentemente é durante o internamento que se inicia o processo de referenciação. Sugerindo que o conhecimento dos alunos sobre a RNCCI, são adquiridos na sua maioria durante a realização do ensino clínico, onde acompanham este tipo de atividades. Embora a formação base da licenciatura, permita uma vasta aquisição de competências teórico-práticas, e a integração de formação sobre a RNCCI, seja considerada pelos alunos de enfermagem, como importante ou muito importante, a mesma pode considerar-se atualmente praticamente inexistente.
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Stereotypies are abnormal repetitive behaviour patterns that are highly prevalent in laboratory mice and are thought to reflect impaired welfare. Thus, they are associated with impaired behavioural inhibition and may also reflect negative affective states. However, in mice the relationship between stereotypies and behavioural inhibition is inconclusive, and reliable measures of affective valence are lacking. Here we used an exploration based task to assess cognitive bias as a measure of affective valence and a two-choice guessing task to assess recurrent perseveration as a measure of impaired behavioural inhibition to test mice with different forms and expression levels of stereotypic behaviour. We trained 44 CD- 1 and 40 C57BL/6 female mice to discriminate between positively and negatively cued arms in a radial maze and tested their responses to previously inaccessible ambiguous arms. In CD-1 mice (i) mice with higher stereotypy levels displayed a negative cognitive bias and this was influenced by the form of stereotypy performed, (ii) negative cognitive bias was evident in back-flipping mice, and (iii) no such effect was found in mice displaying bar-mouthing or cage-top twirling. In C57BL/6 mice neither route-tracing nor bar-mouthing was associated with cognitive bias, indicating that in this strain these stereotypies may not reflect negative affective states. Conversely, while we found no relation of stereotypy to recurrent perseveration in CD-1 mice, C57BL/6 mice with higher levels of route-tracing, but not bar-mouthing made more repetitive responses in the guessing task. Our findings confirm previous research indicating that the implications of stereotypies for animal welfare may strongly depend on the species and strain of animal as well as on the form and expression level of the stereotypy. Furthermore, they indicate that variation in stereotypic behaviour may represent an important source of variation in many animal experiments.
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Recent empirical work on the semantics of emotion terms across many different cultures and languages, using a theoretical componential approach, suggested that four dimensions are needed to parsimoniously describe the semantic space of the emotion domain as reflected in emotion terms (Fontaine, Scherer, Roesch, & Ellsworth, 2007; Fontaine, Scherer, & Soriano, 2013). In addition to valence, power, and arousal, a novelty dimension was discovered that mostly differentiated surprise from other emotions. Here, we further explore the existence and nature of the fourth dimension in semantic emotion space using a much larger and much more representative set of emotion terms. A group of 156 participants each rated 10 out of a set of 80 French emotion terms with respect to semantic meaning. The meaning of an emotion term was evaluated with respect to 68 emotion features representing the appraisal, action tendency, bodily reaction, expression, and feeling components of the emotion process. A principal component analysis confirmed the four-dimensional valence, power, arousal, and novelty structure. Moreover, this larger and much more representative set of emotion terms revealed that the novelty dimension not only differentiates surprise terms from other emotion terms, but also identifies substantial variation within the fear and joy emotion families.
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Notable compositional changes of organic matter are observed below the silica transition zone in thermally immature sediments. The increase of bitumen ratio, and hopane and sterane isomerization parameters indicate an acceleration of the kinetics of the chemical reactions which transform the organic matter. This phenomenon is probably due to the numerous mineral and textural changes induced by the transformation of amorphous biogenic silica into crystalline authigenic silica.
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The paper presents data on naturally quenched melt inclusions in olivine (Fo 69-84) from Late Pleistocene pyroclastic rocks of Zhupanovsky volcano in the frontal zone of the Eastern Volcanic Belt of Kamchatka. The composition of the melt inclusions provides insight into the latest crystallization stages (~70% crystallization) of the parental melt (~46.4 wt % SiO2, ~2.5 wt % H2O, ~0.3 wt % S), which proceeded at decompression and started at a depth of approximately 10 km from the surface. The crystallization temperature was estimated at 1100 ± 20°C at an oxygen fugacity of deltaFMQ = 0.9-1.7. The melts evolved due to the simultaneous crystallization of olivine, plagioclase, pyroxene, chromite, and magnetite (Ol: Pl: Cpx : (Crt-Mt) ~ 13 : 54 : 24 : 4) along the tholeiite evolutionary trend and became progressively enriched in FeO, SiO2, Na2O, and K2O and depleted in MgO, CaO, and Al2O3. Melt crystallization was associated with the segregation of fluid rich in S-bearing compounds and, to a lesser extent, in H2O and Cl. The primary melt of Zhupanovsky volcano (whose composition was estimated from data on the most primitive melt inclusions) had a composition of low-Si (~45 wt % SiO2) picrobasalt (~14 wt % MgO), as is typical of parental melts in Kamchatka and other island arcs, and was different from MORB. This primary melt could be derived by ~8% melting of mantle peridotite of composition close to the MORB source, under pressures of 1.5 ± 0.2 GPa and temperatures 20-30°C lower than the solidus temperature of 'dry' peridotite (1230-1240°C). Melting was induced by the interaction of the hot peridotite with a hydrous component that was brought to the mantle from the subducted slab and was also responsible for the enrichment of the Zhupanovsky magmas in LREE, LILE, B, Cl, Th, U, and Pb. The hydrous component in the magma source of Zhupanovsky volcano was produced by the partial slab melting under water-saturated conditions at temperatures of 760-810°C and pressures of ~3.5 GPa. As the depth of the subducted slab beneath Kamchatkan volcanoes varies from 100 to 125 km, the composition of the hydrous component drastically changes from relatively low-temperature H2O-rich fluid to higher temperature H2O-bearing melt. The geothermal gradient at the surface of the slab within the depth range of 100-125 km beneath Kamchatka was estimated at 4°C/km.
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Mode of access: Internet.
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Adams,
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Vol. 1 originally published. Montbéliard, P. Hoffmann, 1895.
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LC copy replaced by microfilm.
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Four pages from the 3e discours des querres de la Comté Venaissin by Louis de Pérussis are quoted.
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Vol. 1 originally published. Montbéliard, P. Hoffmann, 1895.
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Mode of access: Internet.
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Mode of access: Internet.
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Mode of access: Internet.
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Vol.1-44 Issued by the Society under Its Former Name: Société Départementale d'Archéologie et de Statistique de la Drôme