"AVALIAÇÃO DOS CONHECIMENTOS, PERCEPÇÕES E SENTIMENTOS DOS PACIENTES ONCOLÓGICOS COM RELAÇÃO À SUA DOENÇA E EQUIPE DE SAÚDE."

The authors through individual interviews have analised the way cancer patients got to know about their illness and how these information influenced their lives, family and their feelings. Suggestions have been made after evaluating the results reached in this research.Os autores através de entrevistas individuais analisaram como os portadores de câncer tiveram conhecimento de sua doença e como estas informações influíram na sua vida pessoal, familiar e nos seus sentimentos. Sugestões são formuladas após avaliação dos resultados obtidos nesta pesquisa

Microhabitat de Habia rubica (Vieillot) e Trichothraupis melanops (Vieillot) (Aves, Emberizidae, Thraupinae), em uma floresta atlântica do sul do Brasil Microhabitat of Habia rubica (Vieillot) and Trichothraupis melanops (Vieillot) (Aves, Emberizidae, Thraupinae) in an Atlantic Forest, Southern Brazil

Este estudo identifica quais variáveis caracterizam os microhabitats de Habia rubica (Vieillot, 1817) e Trichothraups melanops (Vieillot, 1818) e verifica o padrão de abundância dessas espécies em relação aos parâmetros de microhabitat. Análise de componentes principais mostrou as variáveis de microhabitat mais importantes para cada espécie. O microhabitat de H. rubica foi caracterizado pelo estrato médio aberto e sub-bosque denso e rico em samambaias, arvoretas, herbáceas e cipós; esta espécie apresentou maior abundância nos locais ricos em tais variáveis. Para T. melanops, as variáveis mais importantes foram samambaias, arbustos, arvoretas, herbáceas, cipós, árvores de grande porte e quantidade de árvores com briófitas; a abundância desta espécie não foi relacionada com a densidade dessas variáveis talvez devido aos seus hábitos generalistas.<br>This study identifies which variables characterize the microhabitats of Habia rubica (Vieillot, 1817) and Trichothraupis melanops (Vieillot, 1818) and verifies the pattern of abundance of these species in relation to the parameters of microhabitat. Principal components analysis showed the variables of microhabitat more important for each species. The microhabitat of H. rubica was characterized for the middle stratum open and understory unclear, rich in ferns, young trees, herbs and lianes; this species presented higher abundance in places rich in such variables. For T. melanops, the variables more important were understory unclear with ferns, shrubs, young trees, lianes and herbs, large trees and number of trees with bryophytes; the abundance of this species was unrelated with the density of these variables perhaps due to their generalist habits

Study of the reaction stages and kinetics of the europium oxide carbochlorination

The europium oxide (Eu2O3(s)) chlorination reaction with sucrose carbon was studied by thermogravimetry between room temperature and 1223 K (950 °C). The nonisothermal thermogravimetry showed that the reaction consists of three stages, and their stoichiometries were studied. The product of the first stage was europium oxychloride, and it showed independence of the reaction kinetics with the carbon content. Subsequently, in the second stage, the EuOCl(s) was carbochlorinated with formation of EuCl3(l) and its evaporation is observed in the third stage. The analysis by Fourier transform infrared spectroscopy of gaseous species showed that the reaction at second stage occurs with the formation of CO2(g) and CO(g). Both reactants and products were analyzed by X-ray diffraction, scanning electron microscopy and wavelength-dispersive X-ray fluorescence spectroscopy. The influence of carbon content, total flow rate, sample initial mass, chlorine partial pressure, and temperature were evaluated. The second stage kinetics was analyzed, which showed an anomalous behavior caused by generation of chlorine radicals during interaction of Cl2(g) and carbon. It was found that the reaction rate at 933 K (660 °C) was proportional to a potential function of the chlorine partial pressure whose exponent is 0.56. The conversion curves were analyzed with the Avrami-Erofeev model and it was obtained an activation energy of 154 ± 5 kJ mol–1.Fil: Pomiro, Federico José. Comisión Nacional de Energía Atómica. Gerencia Complejo Tecnológico Pilcaniyeu; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; ArgentinaFil: Fouga, Gastón Galo. Comisión Nacional de Energía Atómica. Gerencia Complejo Tecnológico Pilcaniyeu; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; ArgentinaFil: Gaviría, Juan Pablo. Comisión Nacional de Energía Atómica. Gerencia Complejo Tecnológico Pilcaniyeu; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; ArgentinaFil: Bohe, Ana Ester. Universidad Nacional del Comahue. Centro Regional Universitario Bariloche; Argentina. Comisión Nacional de Energía Atómica. Gerencia Complejo Tecnológico Pilcaniyeu; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentin

Strategic grazing management towards sustainable intensification at tropical pasture-based dairy systems

Agricultural systems are responsible for environmental impacts that can be mitigated through the adoption of more sustainable principles. Our objective was to investigate the influence of two pre-grazing targets (95% and maximum canopy light interception during pasture regrowth; LI95% and LIMax, respectively) on sward structure and herbage nutritive value of elephant grass cv. Cameroon, and dry matter intake (DMI), milk yield, stocking rate, enteric methane (CH₄) emissions by Holstein × Jersey dairy cows. We hypothesized that grazing strategies modifying the sward structure of elephant grass (Pennisetum purpureum Schum.) improves nutritive value of herbage, increasing DMI and reducing intensity of enteric CH₄ emissions, providing environmental and productivity benefits to tropical pasture-based dairy systems. Results indicated that pre-sward surface height was greater for LIMax (≈135 cm) than LI95% (≈100 cm) and can be used as a reliable field guide for monitoring sward structure. Grazing management based on LI95% criteria improved herbage nutritive value and grazing efficiency, allowing greater DMI, milk yield and stocking rate by dairy cows. Daily enteric CH₄ emission was not affected; however, cows grazing elephant grass at LI95% were more efficient and emitted 21% less CH₄/kg of milk yield and 18% less CH₄/kg of DMI. The 51% increase in milk yield per hectare overcame the 29% increase in enteric CH₄ emissions per hectare in LI95% grazing management. Thereby the same resource allocation resulted in a 16% mitigation of the main greenhouse gas from pasture-based dairy systems. Overall, strategic grazing management is an environmental friendly practice that improves use efficiency of allocated resources through optimization of processes evolving plant, ruminant and their interface, and enhances milk production efficiency of tropical pasture-based systems